CN105970831A - Bottom plate jacking system for jacking closure section of continuous rigid frame bridge and construction method of bottom plate jacking system - Google Patents

Abstract

The invention discloses a bottom plate jacking system for jacking a closure section of a continuous rigid frame bridge and a construction method of the bottom plate jacking system. The bottom plate jacking system comprises two sets of bottom plate embedded bases arranged at the ends of two cantilever beam sections of the continuous rigid frame bridge correspondingly, rigid supporting structures supported between the two sets of bottom plate embedded bases and a jacking mechanism used for jacking the rigid supporting structures. Each set of bottom plate embedded bases comprises a left bottom plate embedded base and a right bottom plate embedded base distributed on the same cantilever beam section. The rigid supporting structures are supporting structures for longitudinal jacking or supporting structures for oblique jacking. One ends of the rigid supporting structures are the fixing ends, and the other ends of the rigid supporting structures are jacking ends. The construction method comprises the steps of (1) construction of the bottom plate embedded bases, (2) mounting of the jacking mechanism and (3) mounting of the rigid supporting structures. The bottom plate jacking system is reasonable in design, easy and convenient to construct and good in use effect, the jacking process of the cantilever beam sections on the two sides of the closure section can be completed easily, conveniently and rapidly, and the correction requirements of lateral deviation and reverse deviation of the cantilever beam sections can be met.

Description

A kind of continuous rigid frame bridge closure segment pushing tow base plate pushing tow system and construction method thereof

Technical field

The invention belongs to technical field of bridge construction, especially relate to a kind of continuous rigid frame bridge closure segment pushing tow base top Push away system and construction method thereof.

Background technology

Continuous rigid frame bridge is the continuous bridge of pier consolidation, point main span be the multispan rigid frame bridge of continuous beam and many Span Continuous- Rigid frame bridge, all uses prestressed reinforced concrete construction, has a main pier of two or more, uses pier consolidation system, have T-shaped rigid frame bridge and The advantage of continuous bridge.Closure segment is the key link of continuous rigid frame bridge construction, for reducing the operation phase due to concrete shrinkage Xu Become and the variations in temperature adverse effect to bridge structure, during the construction of continuous rigid frame bridge closure segment, typically use very heavy at closure segment Top pushing tow, applies horizontal jacking force (according to being constructed respectively to closure segment both sides (the specifically cantilever beam section of closure segment both sides) Continuous rigid frame bridge across footpath with close up front temperature, applied horizontal jacking force typically at 80t～150t, indivedual documents record to be adopted Horizontal jacking force be 800t), adjust bridge internal force status, to eliminate construction time temperature and long-term concrete shrinkage and creep shadow Ring.

Nowadays, the tectonic sieving of continuous rigid frame bridge closure segment pushing tow and temporary locking is various informative, and general many employings are just Property support structure (also known as stiff skeleton) combines the closure segment part interim stretch-draw of steel bundle and enters line-locked mode, at closure segment coagulation Soil forms be rigidly connected (also referred to as false closure) before pouring.The most employings of stiff skeleton are built-in, i.e. stiff skeleton and pushing tow dress Setting within concreting face, completely including stiff skeleton after closure segment concreting, stiff skeleton is as permanent Structure retains.After this structure stretch-draw, built-in stiff skeleton share part axial compressive force, be conducive to reducing closure segment concrete Local compressive stress, but the later stage is due to the impact of concrete shrinkage and creep, and between stiff skeleton and concrete, compressive stress will progressively weigh New distribution, stiff skeleton will absorb the major part compressive stress from prestressed strand, thus be easily caused closure segment coagulation soil pressure and answer Power deposit reduces, and increases cracking risk.

In view of the foregoing, use external stiff skeleton (outer rigid support structure) in recent years more.External strength Property skeleton be positioned at beyond concreting face, belong to temporary component, closure segment concreting is removed after completing, and is not involved in long-term Stress；It is characterized in that internal force is fully transferred to be undertaken by closure segment concrete in early days, compressive stress deposit abundance.

The T structure (also referred to as T structure cantilever beam) of continuous rigid frame bridge closure segment both sides uses the construction of Hanging Basket cantilever pouring due to more, because of And measure, monitor, formwork erection, stretch-draw etc. the most all can produce error, normally behave as following three after the various accumulations of error The error of the situation of kind: the first, elevation difference, i.e. closure segment two ends exist the discrepancy in elevation；The second, lateral deviation, i.e. closure segment two ends exist There is deviation on direction across bridge, between the bridge longitudinal axis at closure segment two ends, there is deviation；3rd, torsional deflection, i.e. closure segment The box beam at two ends is asymmetric, there is the torsion with beam center of gravity as axle.

During practice of construction, the continuous rigid frame bridge being positioned partially or entirely on horizontal curve, due to two coxostermum steel bundles configuration and The size difference of web length, is easily generated above-mentioned the second and the third deviation；For the bridge closed up several times, the more later stage closes The closure segment held together, produce above-mentioned the first, the probability of the second and the third deviation the biggest.

Theoretically, closure segment two ends cantilever pouring construction quality, progress and construction monitoring are carried out, and typically do not have by mistake The situation that difference requires beyond construction technique normalizing, but practice of construction often has dimensional discrepancy close more greatly and exceed code requirement model Situation about enclosing, now, can cause certain adverse effect to structure, such as hogging moment bundle and close up the prestress pipe deviation of bundle relatively Greatly, pipeline concrete stress state can be made during stretch-draw uncontrollable, even result in Local Cracking；Regular reinforcement connects tired After difficulty, and connection on the most same axis, also concrete local can be had a negative impact under External Force Acting, increase cracking wind Danger.Therefore, it is necessary to excessive deviation is corrected on the premise of affecting bridge structure internal force status not too much, also referred to as top Push away correction.

Wherein, for the elevation difference at the first closure segment two ends above-mentioned, can be fitted by the method for uneven preloading Working as adjustment, concrete adjustment process is as follows: in closure segment concrete pouring construction, and general employing other weight such as water tank or sandbag enters Row counterweight, does not consider the half often holding counterweight amount to be closure segment weight concrete when the discrepancy in elevation adjusts, along with concrete construction progressively Unloading, i.e. suitably adjusts elevation difference by the counterweight that cantilever two ends are different.But it is to above-mentioned the second and the third deviation, existing Nowadays there is no a set of corresponding correction method of adjustment.

During it addition, use outer rigid support structure (such as external stiff skeleton) to carry out pushing tow, jacking force should be first before applying Base plate and top board at closure segment are provided above preburied component, and implement pre-buried in last cantilever pouring stage.Wherein, even Continuous steel bridge folding section (also referred to as girder closure segment) refers to the beam section carrying out closing up in the girder of continuous rigid frame bridge, i.e. continuous rigid frame The binding site of bridge girder, including end bay closure segment and main span closure segment.

When at present base plate pushing tow base being designed, owing to closure segment base plate thickness is less, typically at 25cm～35cm Left and right, all there is the problem that the degree of depth is not enough, therefore needs local to increase thickness in the securing member such as direct embedding steel plate bolt.Existing technology Scheme is as base plate pushing tow base at the concrete block top pre-embedded steel slab increased in advance, but this technical scheme exists following lacking Falling into: the first, structure and force-transmission mechanism is complicated, longitudinal jacking force of rigid support structure is first transferred to pre-embedded steel slab, then by pre- Bury steel plate and be transferred to concrete block, be transferred to closure segment underplate concrete the most again；The second, pushing tow point position height is high, additional Moment of flexure is big.

Nowadays, when continuous rigid frame bridge closure segment is carried out pushing tow, the most all it is not provided with special reaction frame, but passes through Pre-buried shape steel bracket takes into account reaction frame as base, also has and is directly connected to rigid bracing (outer rigid support by pre-buried base Structure) method, pushing tow cuts away the part affecting concrete of bridge deck paving again after completing, but above-mentioned existing arrangement and method for construction is equal There is following defect: the first, locking and pushing tow position is positioned at the middle part of outer rigid support structure, due to jack to be arranged Causing the middle part structure complexity that outer rigid support constructs, the integral rigidity of outer rigid support structure reduces；The second, locking is adopted With Site Welding, after construction trouble, and welding locking, error is difficult to adjust；3rd, pushing tow and concreting need to cut after completing Cutting dismounting, recycling rate of waterused is low；4th, component gravity center is higher, and during pushing tow, additional bending moment is big.

During it addition, continuous rigid frame bridge closure segment is carried out pushing tow, it is common that apply longitudinal jacking force；Indivedual bridge construction mistakes , also can there is lateral deviation and torsional deflection (i.e. construction error), now need to be rectified a deviation by oblique pushing tow in Cheng Zhong.But mesh Before, lack the reaction frame that can carry out oblique pushing tow, it is impossible to carry out oblique pushing tow.Wherein, lateral deviation refers to continuous rigid frame bridge In deviation present on direction across bridge, torsional deflection refer to continuous rigid frame bridge anisopleual and exist with beam longitudinal center axis Centered by the torsion problem of line.

Summary of the invention

The technical problem to be solved is for above-mentioned deficiency of the prior art, it is provided that a kind of continuous rigid frame Bridge closure segment pushing tow base plate pushing tow system, its simple in construction, reasonable in design and easy construction, using effect are good, can be easy, fast Speed completes the pushing tow process of closure segment both sides cantilever beam section, and the lateral deviation that can meet cantilever beam section corrects need with torsional deflection Ask.

For solving above-mentioned technical problem, the technical solution used in the present invention is: a kind of continuous rigid frame bridge closure segment pushing tow is used Base plate pushing tow system, it is characterised in that: include two groups of two cantilever beam section ends being laid in constructed continuous rigid frame bridge respectively The pre-buried base of base plate, be supported between the pre-buried base of base plate described in two groups rigid support structure and rigid support is constructed into The top-pushing mechanism of row pushing tow, described cantilever beam section is In Reinforced Concrete Box Girder, and the girder closure segment of constructed continuous rigid frame bridge is It is connected to the closure segment between two described cantilever beam section；Often organize the pre-buried base of described base plate and all include that two are laid in same The pre-buried base of described base plate in described cantilever beam section, two pre-buried bases of described base plate are respectively laid in the end of cantilever beam section The pre-buried base of the pre-buried base in left side and right side of the left and right sides, plate top, the equal position of the pre-buried base of the pre-buried base in described left side and right side Between the left and right sides web of cantilever beam section；

Described rigid support is configured to longitudinal pushing tow support structure or oblique pushing tow support structure；Described longitudinal pushing tow Prop up on the pre-buried base in left side peaked in the pre-buried base of base plate described in two groups respectively with the two ends of support structure or the end described in two groups On the pre-buried base in right side in the pre-buried base of plate, one end of described oblique pushing tow support structure props up that to withstand on base plate described in a group pre- On the pre-buried base in left side in buried end seat and its other end prop up withstand on another group the pre-buried base of described base plate in the pre-buried end in right side On seat；

One end of described rigid support structure is pushing end for fixing end and its other end, described fixing end support top described The pre-buried base of base plate is fixing wing base, and the pre-buried base of described base plate of described pushing end support top is pushing tow wing base；

Described top-pushing mechanism is laid between described pushing end and the described pushing tow wing base of rigid support structure；Described top Pushing mechanism is pushing tow jack, and described pushing tow jack rear portion is propped up and withstood on described pushing tow wing base, and pushing tow jack is anterior Prop up in the described pushing end withstanding on rigid support structure；Described pushing tow jack is laid in the rigid support structure of its pushing tow On same straight line.

Above-mentioned continuous rigid frame bridge closure segment pushing tow base plate pushing tow system, is characterized in that: the pre-buried base of base plate described in two groups In the structure of four pre-buried bases of described base plate the most identical；Often organize two pre-buried ends of described base plate in the pre-buried base of described base plate Seat is symmetrically laid.

Above-mentioned continuous rigid frame bridge closure segment pushing tow base plate pushing tow system, is characterized in that: the pre-buried base of described base plate includes The right angle steel plate being laid in cantilever beam section, the concrete cast-in-situ block being positioned at steel plate side, right angle and multiple tracks all pour in concrete Cast-in-place piece of interior vertical shear reinforcement, vertical shear reinforcement described in multiple tracks all in vertically to laying；Described concrete cast-in-situ block with Cantilever beam section pours and is integrated, and described right angle steel plate is laid on the corner between the base plate of cantilever beam section and web；Described directly Gusset by the front side steel plate being positioned on front side of concrete cast-in-situ block and be positioned at the inner side steel plate inside concrete cast-in-situ block connect and Becoming, described front side steel plate and inner side steel plate are all imbedded in base plate to laying and the bottom of the two in vertical, described front side steel plate Laying along direction across bridge, described inner side steel plate is along indulging bridge to laying；Described in multiple tracks, the lower end of vertical shear reinforcement is all buried Enter in base plate；Described in multiple tracks, vertical shear reinforcement divides multiple rows of multiple row to lay, and is positioned in multiple rows of described vertical shear reinforcement Described in one row of front side, vertical shear reinforcement is all weldingly fixed on the medial wall of front side steel plate, vertical shear reinforcement described in multiple row In be positioned at vertical shear reinforcement described in the string of inner side and be all weldingly fixed on the medial wall of inner side steel plate.

Above-mentioned continuous rigid frame bridge closure segment pushing tow base plate pushing tow system, is characterized in that: described rigid support structure includes Lower supporting steel plate, the rigid strutting piece being laid on lower supporting steel plate and two are laid in lower supporting steel plate rear and front end respectively End steel plate, described lower supporting steel plate and described rigid strutting piece all carry out along the pushing tow direction of cantilever beam section laying and the two Length is identical；Described lower supporting steel plate is rectangular steel plates, and described rigid strutting piece is positioned at surface and its width of lower supporting steel plate Degree is less than the width of lower supporting steel plate；Two described end steel plates all carry out laying and the two along the width of lower supporting steel plate It is vertical steel plate；Before and after described lower supporting steel plate, two ends are separately fixed on two described end steel plates, and described rigidity Before and after support member, two ends are separately fixed on two described end steel plates；Described rigid strutting piece is weldingly fixed on lower supporting steel On plate, described rigid strutting piece is the first support member, the second support member or the 3rd support member, and described first support member is one and falls The first channel-section steel being buckled on lower supporting steel plate, described second support member is made up of two symmetrical support angle steel laid, and described the Three support members are by the symmetrical vertical steel plate laid in two, left and right and the upper supporting steel plate group being supported on two described vertical steel plates Become；The rear and front end, left side of described lower supporting steel plate is provided with multiple left side spiral shell fixing bolt installation respectively for multiple left sides Bolt installing hole and on the right side of it rear and front end be provided with and multiple fix, for multiple right sides, the right side bolt that bolt installs respectively and install Hole, multiple described left side bolt mounting holes and multiple described right sides bolt mounting holes all along the length direction of lower supporting steel plate by front Lay after to；Described lower supporting steel plate fixes bolt by multiple described left sides and multiple described right side is fixed bolt and locked It is fixed in the cantilever beam section of constructed continuous rigid frame bridge；The left and right sides of two described end steel plates is provided with for connecting spiral shell The connecting bolt installing hole that bolt is installed.

Above-mentioned continuous rigid frame bridge closure segment pushing tow base plate pushing tow system, is characterized in that: described longitudinal pushing tow supports structure The quantity made is two, and the two ends of a described longitudinal pushing tow support structure are propped up respectively and peaked at the pre-buried base of base plate described in two groups In the pre-buried base in left side between, the two ends of another described longitudinal pushing tow support structure are propped up respectively and are peaked at base plate described in two groups Between the pre-buried base in right side in pre-buried base；

The quantity of described oblique pushing tow support structure is one.

Above-mentioned continuous rigid frame bridge closure segment pushing tow base plate pushing tow system, is characterized in that: described fixing wing base and described All being installed with pushing reaction frame on pushing tow wing base, described pushing reaction frame is longitudinal pushing reaction frame and/or oblique top Push away reaction frame；

The two ends of described longitudinal pushing tow support structure are all propped up and are withstood on longitudinal pushing reaction frame, and described oblique pushing tow is with propping up The two ends of support structure are all propped up and are withstood on described oblique pushing reaction frame.

Above-mentioned continuous rigid frame bridge closure segment pushing tow base plate pushing tow system, is characterized in that: described longitudinal pushing reaction frame bag Include two, left and right symmetrical lay vertical supports, be positioned at the rear side junction steel plate on rear side of two described vertical supports, two It is laid in the front side junction steel plate of two described vertical supports front ends respectively and is connected between two described vertical supports And for the yoke frame of pushing tow jack support top, described rear side junction steel plate is carried out with the pre-buried base of described base plate in cantilever beam section It is fastenedly connected；The rear end of two described vertical supports is each attached on the front side wall of rear side junction steel plate, described yoke frame position On front side of rear side junction steel plate, described yoke frame be channel-section steel and thereafter sidewall be fixed on rear side junction steel plate front side wall on；Institute State and have multiple rear side bolt installing hole on rear side junction steel plate, each described front side junction steel plate all has front side bolt peace Dress hole；Two described vertical supports be parallel laying and the two be laid in same level, described rear side junction steel plate and Two described front side junction steel plates are all in vertically to laying and all perpendicular with the described vertical supports laying of three, described in two Front side junction steel plate is laid on same vertical plane；The left and right sidewall of described yoke frame is separately fixed at two described longitudinal bracings On part；Described vertical supports is angle steel or is formed by horizontal steel plate and the longitudinal Plate Welding being fixed on horizontal steel plate, institute State longitudinal steel plate in vertically to laying；Described rear side junction steel plate base pre-buried with described base plate is connected.

Above-mentioned continuous rigid frame bridge closure segment pushing tow base plate pushing tow system, is characterized in that: described oblique pushing reaction frame by Longitudinal pushing reaction frame and oblique pushing tow link are formed by connecting；

Described oblique pushing tow link includes horizonal base plate, the connection plate inside being fixed on horizonal base plate inside front and consolidates It is scheduled on the outer side connecting plate of top outside horizonal base plate, by multiple connection steel between described connection plate inside and outer side connecting plate Plate is attached, and described junction steel plate is fixed on horizonal base plate；Described connection plate inside, outer side connecting plate and junction steel plate are equal In vertically to laying；It is attached by multiple steel plate connecting bolts between described connection plate inside and rear side junction steel plate, institute State and on connection plate inside, have the first bolt mounting holes installed for described steel plate connecting bolt；Have on described outer side connecting plate Second bolt mounting holes；

Described outer side connecting plate base pre-buried with described base plate is fastenedly connected, and described connection plate inside is connected with rear side Steel plate is parallel laying；Rear side junction steel plate in described oblique pushing reaction frame is by oblique pushing tow link and described base plate Pre-buried base connects.

Meanwhile, the invention also discloses that a kind of method step is simple, reasonable in design and easy construction, company that using effect is good Continuous steel bridge folding section pushing tow base plate pushing tow system construction method, it is characterised in that: the method comprises the following steps:

The pre-buried base of step one, base plate is constructed: when constructing two described cantilever beam section, at two described cantilever beams The section end pre-buried base of base plate described in pre-buried a group respectively；

Step 2, top-pushing mechanism are installed: described in the pre-buried base of base plate described in two groups constructed in step one Pushing tow jack is installed on pushing tow wing base, and makes pushing tow jack rear portion prop up to withstand on described pushing tow wing base；

Step 3, rigid support structure is installed: installing rigid support structure, the one end making rigid support construct is propped up Withstand on described fixing wing base, and the other end making rigid support construct prop up and peaks on pushing tow wing base described in step 2, And make pushing tow jack construct laying on the same line with the rigid support of its pushing tow.

Said method, is characterized in that: the pre-buried base of base plate described in step one includes the right angle being laid in cantilever beam section Steel plate, the concrete cast-in-situ block being positioned at steel plate side, right angle and multiple tracks all pour the vertical shearing resistance steel in concrete cast-in-situ block Muscle, vertical shear reinforcement described in multiple tracks all in vertically to laying；Described concrete cast-in-situ block pours with cantilever beam section and is integrated, institute State right angle steel plate to be laid on the corner between the base plate of cantilever beam section and web；Described right angle steel plate is by being positioned at concrete cast-in-situ Front side steel plate on front side of block and be positioned at the inner side steel plate inside concrete cast-in-situ block and be formed by connecting, described front side steel plate and inner side steel Plate is all in vertically all imbedding in base plate to laying and the bottom of the two, and described front side steel plate is laid along direction across bridge, described interior Side steel plate is along indulging bridge to laying；Described in multiple tracks, the lower end of vertical shear reinforcement is all imbedded in base plate；Vertically resist described in multiple tracks Shear-steel muscle divides multiple rows of multiple row to lay, and is positioned at vertical shearing resistance steel described in a row of front side in multiple rows of described vertical shear reinforcement Muscle is all weldingly fixed on the medial wall of front side steel plate, is positioned at described in the string of inner side perpendicular in vertical shear reinforcement described in multiple row On the medial wall that shear reinforcement is all weldingly fixed on inner side steel plate；

When in step one, base pre-buried to base plate described in two groups carries out pre-buried, the pre-buried side of the pre-buried base of base plate described in two groups Method is identical；

When base pre-buried to base plate described in arbitrary group carries out pre-buried, process is as follows:

Step 101, the cantilever beam section that this pre-buried base of group base plate is pre-buried is carried out concrete pouring construction before, by multiple tracks All it is fastenedly connected with the framework of steel reinforcement of setting in base plate bottom described vertical shear reinforcement and is integrated；

Step 102, right angle steel plate is fixed, and described Interal fixation reinforcing bar spot welding is fixed on right angle steel plate, Longitudinal pre-embedded bolt and horizontal pre-embedded bolt are installed on right angle steel plate again；

Step 103, by described reinforced bar support skeleton, vertical shear reinforcement connects as one with described in multiple tracks；

Step 104, synchronize to carry out concrete pouring construction to cantilever beam section and concrete cast-in-situ block, treat institute's casting concrete After final set, complete the pre-buried process of this pre-buried base of group base plate.

The present invention compared with prior art has the advantage that

1, simple in construction, reasonable in design and easy construction, puts into construction cost relatively low.

2, the pre-buried understructure of base plate used is simple, reasonable in design and input cost is relatively low, processing and fabricating and installation Lay easy, construction cost is relatively low, the right angle steel plate that mainly includes being laid in the cantilever beam section of constructed continuous rigid frame bridge, many Road is all laid in the vertical shear reinforcement inside steel square plate, mixing by the concreting molding being filled in inside right angle steel plate Cast-in-place piece of solidifying soil, the reinforced bar support skeleton being laid in concrete cast-in-situ block and the pre-buried spiral shell of longitudinal direction being arranged on right angle steel plate Bolt and horizontal pre-embedded bolt, input cost is low and easy construction.This base plate pre-buried base using effect is good and practical value high, tool Have the advantage that first, simple structure, it is easy to processing, use steel plate to form with reinforcement construction；The second, convenient and quick construction, no Affect other operation progress, it is not necessary to Site Welding；3rd distributing bar former with the base plate of cantilever beam section 2 is rationally connected, on-the-spot Overall stress；4th is easy to connect with top-pushing mechanism, reliable；5th is connected reliable with the base plate of cantilever beam section 2 and connects strong Degree height；Pushing reaction frame and outer rigid support structure that 6th base pre-buried with this base plate is connected can be repeatedly utilized so that；7th, Occupation mode is flexible, and regardless of pushing end and fixing end, scene determines as required, and pushing end is identical with fixing end structure, is difficult to Get wrong；8th, use easy and simple to handle, it is easy to carry out cantilever beam section site error adjust；9th, rational in infrastructure, pushing tow adds Moment of flexure is little, cancels the pre-embedded steel slab above concrete block in prior art, directly uses concrete block as pushing tow point, simplifies structure While making, effectively reduce pushing tow point height；Tenth, the reaction frame identical with base plate pushing tow and rigid bracing can be utilized to carry out Pushing tow；11st, remove convenient and swift, and remove after repeatable utilization；12nd, power transmission is reasonable, indulging of rigid support structure It is transferred directly to cast-in-place concrete block to jacking force, and cast-in-place concrete block and closure segment underplate concrete pour and be integrated, because of Simple for force-transmission mechanism.Time actually used, use the pre-buried base of this base plate cantilever beam section can be carried out longitudinal pushing tow, it is also possible to Cantilever beam section is carried out oblique pushing tow and adjusts deviation.Thus, the pre-buried understructure of base plate used is simple, reasonable in design and executes Work is easy, using effect is good, with base plate bonding strength is high and pushing tow point position height is relatively low, power transmission is reasonable.

3, the rigid support structural texture used is simple, reasonable in design and input cost is relatively low, processing and fabricating and installation Laying simplicity, construction cost is relatively low, completes processing in processing factory in advance, and machining accuracy is prone to ensure.Further, rigid support structure Reasonable in design, mainly includes that lower supporting steel plate, the rigid strutting piece being laid on lower supporting steel plate and two lay respectively At the end steel plate of lower supporting steel plate rear and front end, actual installation is easy.During practice of construction, installed by lower supporting steel plate two ends Vertical bolt this rigid support structure is carried out spacing, it is ensured that pushing tow process safety, reliable, this rigid support constructs with pre-buried It is connected easy, reliable between base with reaction frame；Further, by end steel plate, rigid support structure is installed on pre-buried base Reaction frame be locked.This rigid support structure uses end pushing tow mode, convenient and quick construction, and on-the-spot need to be carried out Bolt connects, and scene need not welding, and construction speed is fast, does not affect other operation progress.Further, pushing tow position is positioned at just Property support structure end, rigidity can be effectively ensured continuous, rigidity can meet pushing tow demand.Meanwhile, the rigid support structure used The construction standard made, pushing end is identical with fixing end structure, is difficult to get wrong, and practical operation is easy.Further, rigid support structure Remove convenient and swift, and repeatable utilization after dismounting, recycling rate of waterused is high.It addition, the rigid support structure center of gravity used is low, The additional bending moment during pushing tow can be effectively reduced.Thus, using effect is good and practical value high, the jacking force of pushing tow jack Putting on pre-buried base by rigid support structure, after pushing tow completes, rigid support structure carries out locking admittedly with pushing reaction frame Fixed, and be securedly mounted on the pre-buried base of base plate.Time actually used, it is applied widely that rigid support constructs, and can be used for closing The vertical bridge of the section of holding together, to pushing tow process, can be used for the oblique pushing tow process of closure segment.Thus, the rigid support structure knot used Structure is simple, reasonable in design and easy construction, using effect are good, and scene need not welding, and dismounting is easy, connect reliable and repeat profit High by rate, the additional bending moment produced during pushing tow is less.

4, the longitudinal pushing reaction shelf structure used is simple, reasonable in design and input cost is relatively low, processing and fabricating and peace Simplicity laid by dress, and construction cost is relatively low, completes processing in processing factory in advance, and machining accuracy is prone to ensure.This longitudinal direction pushing reaction Frame mainly includes the vertical supports of the symmetrical laying in two, left and right, is positioned at the rear side connection steel on rear side of two described vertical supports Plate, two front side junction steel plates being laid in two vertical supports front ends respectively and be connected between two vertical supports and For the yoke frame of pushing tow jack support top, actual installation is easy.It addition, this longitudinal direction pushing reaction frame and the pre-buried base of base plate and firm Property support structure (such as rigid supporting rod, rigid backbone etc.) between connect easy, reliable；Further, will by front side junction steel plate Longitudinal pushing reaction frame is locked with rigid support structure.This longitudinal direction pushing reaction frame occupation mode is flexible, energy simplicity, Quickly carry out vertical bridge to pushing tow.Meanwhile, to form oblique pushing tow after assembling anti-for this longitudinal direction pushing reaction frame and oblique pushing tow link Power frame, easy, quickly can change pushing tow direction, and energy is easy, quickly cantilever beam section is carried out oblique pushing tow, and this oblique pushing tow connects Shelf structure is simple, reasonable in design and processing and fabricating and dismounting simplicity, and using effect is good.

5, the longitudinal pushing reaction frame used and oblique pushing reaction frame use end pushing tow mode, and easy construction is fast Victory, on-the-spot need to carry out bolt and connect, and scene need not welding, and construction speed is fast, does not affect other operation progress.And And, longitudinal pushing reaction frame and the construction standard of oblique pushing reaction frame, the pushing end of rigid support structure and fixing end institute The longitudinal pushing reaction frame installed is the most identical with the structure of oblique pushing reaction frame, is difficult to get wrong, and practical operation is easy.Further, During practice of construction, all can carry out pushing tow and locking at the two ends of rigid support structure, it is simple to the error transfer factor in construction.It addition, The longitudinal pushing reaction frame used and oblique pushing reaction frame are removed convenient and swift, and repeatable utilization after dismounting, repeat profit High by rate；And the center of gravity of longitudinal pushing reaction frame and oblique pushing reaction frame is low, can effectively reduce during pushing tow is additional Moment of flexure.Thus, the longitudinal pushing reaction frame used and oblique pushing reaction frame using effect is good and practical value is high, fastening peace Being contained on the pre-buried base of base plate, the jacking force of pushing tow jack is put on by longitudinal pushing reaction frame or oblique pushing reaction frame On the pre-buried base of base plate, pushing reaction frame is locked after completing by pushing tow with rigid support structure.Further, longitudinal pushing tow Reaction frame is used for the oblique pushing tow process of closure segment, structure for the vertical bridge of closure segment to pushing tow process, oblique pushing reaction frame Simply, reasonable in design and easy construction, using effect good, scene need not welding, and dismounting is easy, connect reliable and recycling Rate is high, and the additional bending moment produced during pushing tow is less.

6, using effect is good and practical value high, and energy is easy, be rapidly completed the pushing tow process of closure segment both sides cantilever beam section, And lateral deviation and the torsional deflection correction demand of cantilever beam section can be met.

7, use construction method step is simple, reasonable in design and easy construction, using effect are good, can be easy, the completeest Become the work progress of base plate pushing tow system, and the construction quality of the base plate pushing tow system of construction molding can be effectively ensured, Efficiency of construction is high.

Below by drawings and Examples, technical scheme is described in further detail.

Accompanying drawing explanation

Fig. 1-1 is use state reference map during the longitudinal pushing reaction frame of base plate pushing tow system of the present invention employing.

Fig. 1-2 is use state reference map during base plate pushing tow system of the present invention oblique pushing reaction frame of employing.

Fig. 1-3 is the installation position schematic diagram of two the pre-buried bases of base plate in cantilever beam section end of the present invention.

Fig. 2-1 is the planar structure schematic diagram of the pre-buried base of base plate of the present invention.

Fig. 2-2 is the direction across bridge structural representation of the pre-buried base of base plate of the present invention.

Fig. 3-1 is the structural representation of longitudinal direction pushing reaction frame of the present invention.

Fig. 3-2 is the structural representation of the present invention oblique pushing reaction frame.

Fig. 3-3 is the structural representation of the present invention oblique pushing tow link.

Fig. 4-1 is the structural representation of rigid support structure in the embodiment of the present invention 1.

Fig. 4-2 is the end construction schematic diagram of rigid support structure in the embodiment of the present invention 1.

Fig. 4-3 is lower supporting steel plate and the structural representation of rigid strutting piece in the embodiment of the present invention 1.

Fig. 5 is the construction method FB(flow block) of base plate pushing tow system of the present invention.

Fig. 6 is lower supporting steel plate and the structural representation of rigid strutting piece in the embodiment of the present invention 2.

Fig. 7 is lower supporting steel plate and the structural representation of rigid strutting piece in the embodiment of the present invention 3.

Fig. 7-1 is the cantilever beam section structural representation of the existence lateral deviation of institute of the present invention pushing tow.

Fig. 7-2 is the cantilever beam section structural representation of the existence torsional deflection of institute of the present invention pushing tow.

Description of reference numerals:

1-1 right angle steel plate；Steel plate on front side of 1-1-1；Steel plate inside 1-1-2；

The vertical shear reinforcement of 1-2；1-3 concrete cast-in-situ block；1-6 longitudinal reinforcement；

1-7 transverse steel；1-8 longitudinal direction pre-embedded bolt；The horizontal pre-embedded bolt of 1-9；

2 cantilever beam section；2-1 base plate；2-2 web；

Pre-buried base on the left of in the of 3；Pre-buried base on the right side of in the of 4；5 rigid support structures；

Supporting steel plate under 5-1；5-2-1 the first channel-section steel；5-2-2 supports angle steel；

The vertical steel plate of 5-2-3；The upper supporting steel plate of 5-2-4；5-3 end steel plate；

5-3-1 connecting bolt installing hole；6 pushing tow jack；7 longitudinal pushing reaction framves；

7-1 horizontal steel plate；7-2 longitudinal direction steel plate；7-3 yoke frame；

Junction steel plate on rear side of 7-4；7-4-1 rear side bolt installing hole；

Junction steel plate on front side of 7-5；7-5-1 front side bolt installing hole；

7-6 oblique pushing tow link；7-6-1 horizonal base plate；7-6-2 connection plate inside；

The outer side connecting plate of 7-6-3；7-6-4 junction steel plate；

7-6-5 the second bolt mounting holes；7-6-6 the first bolt mounting holes.

Detailed description of the invention

A kind of continuous rigid frame bridge closure segment pushing tow base plate pushing tow system as shown in Fig. 1-1, Fig. 1-2 and Fig. 1-3, including The pre-buried base of base plate of two groups of two cantilever beam section 2 ends being laid in constructed continuous rigid frame bridge respectively, it is supported in two groups of institutes State the structure of the rigid support between the pre-buried base of base plate 5 and rigid support structure 5 is carried out the top-pushing mechanism of pushing tow, described cantilever Beam section 2 is In Reinforced Concrete Box Girder, the girder closure segment of constructed continuous rigid frame bridge for be connected to two described cantilever beam section 2 it Between closure segment；Often organize the pre-buried base of described base plate and all include two described ends being laid in same described cantilever beam section 2 The pre-buried base of plate, two pre-buried bases of described base plate are respectively laid in a left side for the left and right sides, base plate 2-1 top of cantilever beam section 2 The pre-buried base of the pre-buried base in side 3 and right side 4, the pre-buried base of the pre-buried base in described left side 3 and right side 4 is respectively positioned on cantilever beam section 2 Between the web 2-2 of the left and right sides；

Described rigid support structure 5 is longitudinal pushing tow support structure or oblique pushing tow support structure；Described longitudinally top Push away and prop up respectively with the two ends of support structure on the pre-buried base in left side 3 peaked in the pre-buried base of base plate described in two groups or described in two groups On the pre-buried base in right side 4 in the pre-buried base of base plate, one end of described oblique pushing tow support structure is propped up and is withstood on the end described in one group On the pre-buried base in left side 3 in the pre-buried base of plate and its other end prop up withstand on another group the pre-buried base of described base plate in right side pre- On buried end seat 4；

One end of described rigid support structure 5 is pushing end for fixing end and its other end, the institute of described fixing end support top Stating the pre-buried base of base plate is fixing wing base, and the pre-buried base of described base plate of described pushing end support top is pushing tow wing base；

Described top-pushing mechanism is laid between described pushing end and the described pushing tow wing base of rigid support structure 5；Described Top-pushing mechanism is pushing tow jack 6, and described pushing tow jack 6 rear portion is propped up and withstood on described pushing tow wing base, and pushing tow jack 6 In anterior the described pushing end withstanding on rigid support structure 5；Described pushing tow jack 6 constructs with the rigid support of its pushing tow 5 lay on the same line.

When actual laying is installed, the pre-buried base of described base plate is laid along the length direction of residing cantilever beam section 2.

In the present embodiment, in the pre-buried base of base plate described in two groups, the structure of four pre-buried bases of described base plate is the most identical；Often Two the pre-buried bases of described base plate organized in the pre-buried base of described base plate are symmetrically laid.

As shown in Fig. 2-1, Fig. 2-2, right angle steel plate 1-1 that the pre-buried base of described base plate includes being laid in cantilever beam section 2, The concrete cast-in-situ block 1-3 and the multiple tracks that are positioned at steel plate 1-1 side, right angle all pour in the vertical shearing resistance of concrete cast-in-situ block 1-3 Reinforcing bar 1-2, vertical shear reinforcement 1-2 described in multiple tracks all in vertically to laying；Described concrete cast-in-situ block 1-3 and cantilever beam section 2 Pouring and be integrated, described right angle steel plate 1-1 is laid on the corner between the base plate 2-1 of cantilever beam section 2 and web 2-2；Described Right angle steel plate 1-1 is by the front side steel plate 1-1-1 being positioned on front side of concrete cast-in-situ block 1-3 and is positioned at inside concrete cast-in-situ block 1-3 Inner side steel plate 1-1-2 be formed by connecting, described front side steel plate 1-1-1 and inner side steel plate 1-1-2 is all in vertically to laying and the two Bottom all imbed in base plate 2-1, described front side steel plate 1-1-1 lays along direction across bridge, and described inner side steel plate 1-1-2 is along vertical Bridge is to laying；Described in multiple tracks, the lower end of vertical shear reinforcement 1-2 is all imbedded in base plate 2-1；Vertical shearing resistance steel described in multiple tracks Muscle 1-2 divides multiple rows of multiple row to lay, and is positioned at vertical shearing resistance described in a row of front side in multiple rows of described vertical shear reinforcement 1-2 Reinforcing bar 1-2 is all weldingly fixed on the medial wall of front side steel plate 1-1-1, is positioned in vertical shear reinforcement 1-2 described in multiple row Vertical shear reinforcement 1-2 described in the string of side is all weldingly fixed on the medial wall of inner side steel plate 1-1-2.

In the present embodiment, all fasten with the framework of steel reinforcement of setting in base plate 2-1 bottom vertical shear reinforcement 1-2 described in per pass Connect as one.

In the present embodiment, the front side wall of described concrete cast-in-situ block 1-3 and the medial wall of front side steel plate 1-1-1 are close to and it The sidewall of medial wall and inner side steel plate 1-1-2 is close to, and described front side steel plate 1-1-1 is the front side wall to concrete cast-in-situ block 1-3 The front side forming panel being shaped, described inner side steel plate 1-1-2 is that the lateral wall to concrete cast-in-situ block 1-3 is shaped Outside forming panel.

In the present embodiment, described front side steel plate 1-1-1 and the upper surface flush of inner side steel plate 1-1-2.

Actual adding man-hour, described right angle steel plate 1-1 is formed by an elongate steel plate bending, described right angle steel plate 1-1's Thickness of slab is 8mm～12mm.

In the present embodiment, described in multiple tracks, the tip height of vertical shear reinforcement 1-2 is below the upper of concrete cast-in-situ block 1-3 Apparent height.

In the present embodiment, in described concrete cast-in-situ block 1-3, it is embedded with reinforced bar support skeleton.

The vertical shear reinforcement 1-2 being weldingly fixed on right angle steel plate 1-1 in vertical shear reinforcement 1-2 described in multiple tracks is Interal fixation reinforcing bar, vertical shear reinforcement 1-2 in addition to described Interal fixation reinforcing bar in vertical shear reinforcement 1-2 described in multiple tracks It is skeleton and fixes reinforcing bar.

In conjunction with Fig. 2-1 and Fig. 2-2, described reinforced bar support skeleton includes multiple horizontal mesh reinforcement from top to bottom laid, many The structure of individual described horizontal mesh reinforcement is the most identical, and skeleton described in each described horizontal mesh reinforcement Jun Yuge road fixes reinforcing bar fastening even Connect and be integrated；Each described horizontal mesh reinforcement all includes longitudinal reinforcement 1-6 and the multiple tracks cloth that multiple tracks is laid in same level The vertical bridge of the constructed continuous rigid frame bridge in the transverse steel 1-7 being located in same level, described longitudinal reinforcement 1-6 edge is to carrying out cloth If described transverse steel 1-7 lays along the direction across bridge of constructed continuous rigid frame bridge；In described horizontal mesh reinforcement described in per pass Longitudinal reinforcement 1-6 is all fastenedly connected with transverse steel 1-7 described in multiple tracks and is integrated, longitudinal reinforcement 1-6 described in per pass and each road institute State the junction of transverse steel 1-7 to be provided with described skeleton together and fix reinforcing bar.

Further, the diameter of described longitudinal reinforcement 1-6 and transverse steel 1-7 is Φ 10mm～Φ 15mm.

In the present embodiment, the diameter of described longitudinal reinforcement 1-6 and transverse steel 1-7 is Φ 12mm.During practice of construction, can According to specific needs, the diameter of longitudinal reinforcement 1-6 and transverse steel 1-7 is adjusted accordingly.Time actually used, described reinforcing bar Support frame plays the vertical shear reinforcement 1-2 of support and as the effect of distributing bar in concrete cast-in-situ block 1-3.

During practice of construction, a diameter of Φ 12mm～Φ 20mm of described vertical shear reinforcement 1-2, described vertical shear reinforcement The degree of depth in 1-2 embedment base plate 2-1 be 18cm～22cm and its upper end be positioned at below the end face of concrete cast-in-situ block 1-3 2cm～ 3cm position.

In the present embodiment, a diameter of Φ 16mm of described vertical shear reinforcement 1-2, described vertical shear reinforcement 1-2 imbed The degree of depth in base plate 2-1 is 20cm.During practice of construction, can according to specific needs, to the diameter of vertical shear reinforcement 1-2 and vertical The degree of depth in shear reinforcement 1-2 embedment base plate 2-1 adjusts accordingly.

In the present embodiment, equipped with multiple longitudinal pre-embedded bolt 1-8 on described front side steel plate 1-1-1, multiple described longitudinal directions are pre- Bury bolt 1-8 all along the vertical bridge of constructed continuous rigid frame bridge to laying, described front side steel plate 1-1-1 has multiple difference The bolt mounting holes installed for longitudinal pre-embedded bolt 1-8；The rear portion of each described longitudinal pre-embedded bolt 1-8 all pours in concrete In cast-in-place piece of 1-3, the front portion of each described longitudinal pre-embedded bolt 1-8 all extend out on front side of the steel plate 1-1-1 of front side.

Time actually used, the effect of multiple described longitudinal pre-embedded bolt 1-8 is to connect the longitudinal direction on front side of right angle steel plate 1-1 Pushing reaction frame.

In the present embodiment, the quantity of described longitudinal pre-embedded bolt 1-8 is 2, and described longitudinal pre-embedded bolt 1-8's is a diameter of Φ 16mm～Φ 20mm.

During practice of construction, can according to specific needs, quantity and diameter to longitudinal pre-embedded bolt 1-8 are adjusted the most accordingly Whole.

In the present embodiment, equipped with multiple horizontal pre-embedded bolt 1-9 on described inner side steel plate 1-1-2, multiple described the most pre- Bury bolt 1-9 all along the vertical bridge of constructed continuous rigid frame bridge to laying, described inner side steel plate 1-1-2 has multiple difference The bolt mounting holes installed for horizontal pre-embedded bolt 1-9；The rear portion of each described horizontal pre-embedded bolt 1-9 all pours in concrete In cast-in-place piece of 1-3, the front portion of each described horizontal pre-embedded bolt 1-9 all extend out to inside the steel plate 1-1-2 of inner side.

Time actually used, it is oblique that the effect of multiple described horizontal pre-embedded bolt 1-9 is to connect inside right angle steel plate 1-1 Pushing reaction frame.

In the present embodiment, the quantity of described horizontal pre-embedded bolt 1-9 is 3, and described horizontal pre-embedded bolt 1-9's is a diameter of Φ 16mm～Φ 20mm.

During practice of construction, can according to specific needs, quantity and diameter to horizontal pre-embedded bolt 1-9 are adjusted the most accordingly Whole.

In the present embodiment, multiple described horizontal pre-embedded bolt 1-9 and multiple described longitudinal pre-embedded bolt 1-8 are all laid in same On one horizontal plane.

Further, it is attached in spot welding mode between described Interal fixation reinforcing bar and right angle steel plate 1-1.

Time actually used, the quantity of described longitudinal pushing tow support structure is two, and a described longitudinal pushing tow supports The two ends of structure are propped up between the pre-buried base in left side 3 peaked in the pre-buried base of base plate described in two groups respectively, another described longitudinal direction The two ends of pushing tow support structure are propped up between the pre-buried base in right side 4 peaked in the pre-buried base of base plate described in two groups respectively, refer to Fig. 1-1；The quantity of described oblique pushing tow support structure is one, refers to Fig. 1-2.

Time actually used, when described longitudinal pushing tow support structure is described longitudinal pushing tow support structure, use this Invent described base plate pushing tow system and cantilever beam section 2 is carried out longitudinal pushing tow (i.e. indulging bridge to promoting)；When described longitudinal pushing tow is with propping up When support is configured to described oblique pushing tow support structure, use base plate pushing tow system of the present invention that cantilever beam section 2 is carried out tiltedly To pushing tow.

Further, described fixing wing base and described pushing tow wing base are all installed with pushing reaction frame, described pushing tow Reaction frame is longitudinal pushing reaction frame 7 and/or oblique pushing reaction frame；

The two ends of described longitudinal pushing tow support structure are all propped up and are withstood on longitudinal pushing reaction frame 7, and described oblique pushing tow is used The two ends of support structure are all propped up and are withstood on oblique pushing reaction frame.

As shown in Fig. 4-1, Fig. 4-2 and Fig. 4-3, described rigid support structure 5 includes lower supporting steel plate 5-1, is laid in down Rigid strutting piece on supporting steel plate 5-1 and two end steel plate 5-3 being laid in lower supporting steel plate 5-1 rear and front end respectively, Described lower supporting steel plate 5-1 and described rigid strutting piece all carry out along the pushing tow direction of cantilever beam section 2 laying and the two length Identical；Described lower supporting steel plate 5-1 is rectangular steel plates, described rigid strutting piece be positioned at the surface of lower supporting steel plate 5-1 and its The width width less than lower supporting steel plate 5-1；Two described end steel plate 5-3 all enter along the width of lower supporting steel plate 5-1 Row is laid and both at vertical steel plate；Before and after described lower supporting steel plate 5-1, two ends are separately fixed at two described end steel On plate 5-3, and before and after described rigid strutting piece, two ends are separately fixed on two described end steel plate 5-3；Described rigidity is propped up Support member is weldingly fixed on lower supporting steel plate 5-1, and described rigid strutting piece is the first support member, the second support member or the 3rd support Part, described first support member is a first channel-section steel 5-2-1 tipped upside down on lower supporting steel plate 5-1, described second support member by Two symmetrical support angle steel 5-2-2 compositions laid, described 3rd support member is by the symmetrical vertical steel plate 2-3 laid in two, left and right With the upper supporting steel plate 2-4 composition being supported on two described vertical steel plate 2-3；Before and after the left side of described lower supporting steel plate 5-1 Two ends be provided with multiple respectively for multiple left sides fix bolt install left side bolt mounting holes 5-1-1 and its on the right side of before and after two End is provided with multiple right side bolt mounting holes 5-1-2 fixing bolt installation respectively for multiple right sides, multiple described left sides spiral shell Bolt installing hole 5-1-1 and multiple described right side bolt mounting holes 5-1-2 all along lower supporting steel plate 5-1 length direction from front to back Lay；Described lower supporting steel plate 5-1 fixes bolt by multiple described left sides and multiple described right side is fixed bolt and locked It is fixed in the cantilever beam section of constructed continuous rigid frame bridge；The left and right sides of two described end steel plate 5-3 is provided with for even The connecting bolt installing hole 5-3-1 that connecting bolt is installed.

Time actually used, can install on the pre-buried base of described base plate in vertically vertical to lay according to actual needs Fixing bolt, bolt is fixed in described left side and right side is fixed bolt and is described vertical fixing bolt.After pushing tow completes, by institute State the fixing bolt in left side and right side fixed bolt and locked by the end base pre-buried with described base plate of rigid support structure 5, Safe and reliable to ensure, the accident such as rigid support structure will not be occurred 5 shift, fall.

In the present embodiment, described connecting bolt installing hole 5-3-1 is circular.

Time actually used, described end steel plate 5-3 is rectangular steel plates or isosceles trapezoid steel plate.

In the present embodiment, described end steel plate 5-3 is isosceles trapezoid steel plate and its width is from top to bottom gradually increased.Described The bottom width of end steel plate 5-3 is identical with the width of lower supporting steel plate 5-1.

In the present embodiment, the structure of two described end steel plate 5-3 is the most identical with size.

Actual add man-hour, described end steel plate 5-3 with between lower supporting steel plate 5-1 and described rigid strutting piece all to weld Mode is fixedly connected.

In the present embodiment, multiple described left side bolt mounting holes 5-1-1 and multiple described right side bolt mounting holes 5-1-2 in Symmetrical laying；Multiple described left side bolt mounting holes 5-1-1 are respectively positioned on the left of described rigid strutting piece, multiple described right sides bolt Installing hole 5-1-2 is respectively positioned on the right side of described rigid strutting piece.

Further, multiple described left side bolt mounting holes 5-1-1 and multiple described right side bolt mounting holes 5-1-2 are all in uniformly Lay.

Described left side bolt mounting holes 5-1-1 and right side bolt mounting holes 5-1-2 is unthreaded hole and (is i.e. not provided with female thread Hole), the aperture of described left side bolt mounting holes 5-1-1 and right side bolt mounting holes 5-1-2 is all higher than the straight of described vertical bolt Footpath, it is simple to position of the present utility model is carried out error transfer factor.In the present embodiment, described left side bolt mounting holes 5-1-1 and the right side The aperture of side bolt mounting holes 5-1-2 is all slightly larger than the shank of bolt diameter of described vertical bolt.

In the present embodiment, the left and right sides of two described end steel plate 5-3 is provided with multiple described connecting bolt and installs Hole 5-3-1, multiple described connecting bolt installing hole 5-3-1 lay from left to right；Institute on the left of each described end steel plate 5-3 The connecting bolt installing hole 5-3-1 arranged is left side connecting hole, and described left side connecting hole is positioned on the left of described rigid strutting piece； Connecting bolt installing hole 5-3-1 set on the right side of each described end steel plate 5-3 is right side connecting hole, and described right side connects Hole is positioned on the right side of described rigid strutting piece.

Further, multiple described left sides connecting hole is symmetrically laid with multiple described right sides connecting hole.

In the present embodiment, the left and right sides of each described end steel plate 5-3 is provided with two described connecting bolts and installs Hole 5-3-1, on each described end steel plate 5-3, the quantity of described left side connecting hole and described right side connecting hole is two.Two On the left of individual described left side connecting hole respectively first, connecting hole and being positioned on the left of in the of described first on the left of second on the right side of connecting hole connects Connecing hole, on the left of in the of described second, connecting hole is positioned on the left of in the of described first above connecting hole.

Actual add man-hour, height h=100mm～150mm of described first channel-section steel 5-2-1, lower limb width b=200mm～300mm And its waist thickness d=10mm～16mm.

In the present embodiment, the height h=100mm of described first channel-section steel 5-2-1, lower limb width b=200mm and its waist thickness d= 12mm。

In the actual course of processing, can according to specific needs, to height h, lower limb width b and its waist thickness d of the first channel-section steel 5-2-1 Size adjusts accordingly respectively.

In the present embodiment, the thickness of slab of described lower supporting steel plate 5-1 and end steel plate 5-3 is 10mm～16mm, described under The width of supporting steel plate 5-1 is 2D, wherein D=h+ Δ d, Δ d=8cm～16cm.

In the present embodiment, described connecting bolt is that level is laid, and described connecting bolt is along indulging bridge to laying.Described company The aperture of connecting bolt installing hole 5-3-1 is slightly larger than the shank of bolt diameter of described connecting bolt.

In the present embodiment, the diameter (i.e. the diameter of its shank of bolt) of described connecting bolt is Φ 20mm～Φ 32mm.

In the present embodiment, described left side bolt mounting holes 5-1-1 and right side bolt mounting holes 5-1-2 is slotted hole.And And, described slotted hole is laid along the length direction of lower supporting steel plate 5-1.

For ease of carrying out error transfer factor, to left side bolt mounting holes 5-1-1 and right side spiral shell during recycling and pushing tow Bolt installing hole 5-1-2 length on pushing tow direction suitably increases, thus left side bolt mounting holes 5-1-1 and right side bolt Installing hole 5-1-2 is slotted hole.

In the present embodiment, described fixing wing base and described pushing tow wing base are all installed with longitudinal pushing reaction frame 7。

As shown in figure 3-1, described longitudinal pushing reaction frame 7 includes the vertical supports of the symmetrical laying in two, left and right, is positioned at Rear side junction steel plate 7-4 on rear side of two described vertical supports, two be laid in two described vertical supports front ends respectively Front side junction steel plate 7-5 and be connected between two described vertical supports and for the yoke frame 7-of pushing tow jack 6 support top 3, described rear side junction steel plate 7-4 is fastenedly connected with the pre-buried base of described base plate in cantilever beam section 2；Two described longitudinal directions The rear end of support member is each attached on the front side wall of rear side junction steel plate 7-4, and described yoke frame 7-3 is positioned at rear side junction steel plate 7- On front side of in the of 4, described yoke frame 7-3 be channel-section steel and thereafter sidewall be fixed on rear side junction steel plate 7-4 front side wall on；Described rear side connects Connect and on steel plate 7-4, have multiple rear side bolt installing hole 7-4-1, each described front side junction steel plate 7-5 all has front side spiral shell Bolt installing hole 7-5-1；Two described vertical supports be parallel laying and the two be laid in same level, described rear side connects Connect steel plate 7-4 and two described front side junction steel plate 7-5 all in vertically to lay and three all with described vertical supports in vertical Straight laying, two described front side junction steel plate 7-5 are laid on same vertical plane；The left and right sidewall of described yoke frame 7-3 is respectively It is fixed on two described vertical supports；Described vertical supports is angle steel or by horizontal steel plate 7-1 and be fixed on horizontal steel Longitudinal steel plate 7-2 on plate 7-1 is welded, and described longitudinal steel plate 7-2 is in vertically to laying；Described rear side junction steel plate 7-4 Base pre-buried with described base plate is connected.

In the present embodiment, described vertical supports is by horizontal steel plate 7-1 and the longitudinal steel plate being fixed on horizontal steel plate 7-1 7-2 is welded.

Actual add man-hour, described horizontal steel plate 7-1, longitudinal steel plate 7-2, rear side junction steel plate 7-4 and front side junction steel plate The thickness of slab of 7-5 is 10mm～15mm.

In the present embodiment, in described vertical supports, the medial wall of horizontal steel plate 7-1 extend out to inside longitudinal steel plate 7-2； The left and right sidewall of described yoke frame 7-3 is respectively welded on the longitudinal steel plate 7-2 being fixed in two described vertical supports, described Yoke frame 7-3 bottom welding is fixed on the horizontal steel plate 7-1 in two described vertical supports.

The medial wall of two described front side junction steel plate 7-5 is respectively welded and is fixed in two described vertical supports longitudinally On the lateral wall of steel plate 7-2, it is respectively welded bottom two described front side junction steel plate 7-5 and is fixed on two described vertical supports In horizontal steel plate 7-1 on.

In the present embodiment, the quantity of described rear side bolt installing hole 7-4-1 is two, two described rear side bolt installing holes 7-4-1 is laid in the both sides of yoke frame 7-3 respectively, and two described rear side bolt installing hole 7-4-1 are laid in same level On.

Time actually used, the effect of described rear side junction steel plate 7-4 be to be connected to the pre-buried base of described base plate, described Base plate pre-buried base pre-plugged is on the base plate 2-1 of cantilever beam section 2, and rear side junction steel plate 7-4 is pre-buried with described base plate It is attached by bolt (the most multiple longitudinal pre-embedded bolt 1-8) between base.

In the present embodiment, two described front side junction steel plate 7-5 effects are the rigid support structure 5 with pushing tow even Connect.

In the present embodiment, on each described front side junction steel plate 7-5, the quantity of opened front side bolt installing hole 7-5-1 is One, on two described front side junction steel plate 7-5, opened front side bolt installing hole 7-5-1 is laid in same level.Described Front side bolt installing hole 7-5-1 is the installing hole installed for described connecting bolt.

During practice of construction, first in processing factory, longitudinal pushing reaction frame 7 is processed.Before pushing tow, first in the company of being constructed The pre-buried pre-buried base of described base plate of difference in two cantilever beam section 2 of continuous rigid frame bridge, and on the pre-buried base of described base plate The longitudinal pushing reaction frame 7 of fixed installation respectively；Top is installed between the pre-buried base of described base plate of two described cantilever beam section 2 again The rigid support structure 5 pushed away；Afterwards, installing pushing tow jack 6, the rear end of described pushing tow jack 6 is propped up and is withstood on top In push piece 7-3 and its front end is propped up and is withstood on described rigid support structure；Finally, described pushing tow jack 6 is used to carry out pushing tow.

The longitudinal direction that the fixing end of described rigid support structure 5 directly and is installed on described fixing wing base by multiple bolts Pushing reaction frame 7 is locked.When described pushing tow jack 6 is installed, the front end support top of described pushing tow jack 6 In rigid support structure 5 pushing end on and its rear end be supported on described pushing tow wing base install longitudinal pushing reaction frame 7 Upper (on the most described yoke frame 7-3).After pushing tow completes, by multiple bolts, rigid support is constructed pushing end and the institute of 5 State the longitudinal pushing reaction frame 7 installed on pushing tow wing base to be locked.

Before longitudinal pushing tow, the fixing end of described rigid support structure 5 is by multiple described connecting bolts, directly with described The longitudinal pushing reaction frame 7 (specifically front side junction steel plate 7-5) installed on fixing wing base is locked；And by many Individual described connecting bolt is by the pushing end of rigid support structure 5 and longitudinal pushing reaction frame 7 of installation on described pushing tow wing base (specifically front side junction steel plate 7-5) is locked.When pushing tow jack 6 is installed, described pushing tow jack 6 Front end is propped up in the pushing end peaking at described rigid support structure 5 and its rear end is supported on described pushing tow wing base the longitudinal direction installed On pushing reaction frame 7 (specifically on yoke frame 7-3).Should be noted: when being locked, it is impossible to be locked completely, need pre- Stay pushing tow displacement, i.e. reserved certain activity space between rigid support structure 5 and longitudinal pushing reaction frame 7.

In the present embodiment, as shown in figure 3-2, described oblique pushing reaction frame is by longitudinal pushing reaction frame 7 and oblique pushing tow Link 7-6 is formed by connecting.Further, described oblique pushing tow link 7-6 is positioned at outside longitudinal pushing reaction frame 7.

In conjunction with Fig. 3-3, described oblique pushing tow link 7-6 includes horizonal base plate 7-6-1, is fixed on horizonal base plate 7-6-1 The connection plate inside 7-6-2 of inside front and the outer side connecting plate 7-6-3 being fixed on above outside horizonal base plate 7-6-1, described It is attached by multiple junction steel plate 7-6-4 between connection plate inside 7-6-2 and outer side connecting plate 7-6-3, described connection steel Plate 7-6-4 is fixed on horizonal base plate 7-6-1；Described connection plate inside 7-6-2, outer side connecting plate 7-6-3 and junction steel plate 7- 6-4 is all in vertically to laying；It is connected spiral shell by multiple steel plates between described connection plate inside 7-6-2 with rear side junction steel plate 7-4 Bolt is attached, and described connection plate inside 7-6-2 has the first bolt mounting holes 7-installed for described steel plate connecting bolt 6-6；The second bolt mounting holes 7-6-5 is had on described outer side connecting plate 7-6-3；

Described outer side connecting plate 7-6-3 base pre-buried with described base plate is fastenedly connected, described connection plate inside 7-6-2 It is parallel laying with rear side junction steel plate 7-4；Rear side junction steel plate 7-4 in described oblique pushing reaction frame passes through oblique pushing tow Link 7-6 base pre-buried with described base plate is connected.

Actual man-hour, described horizonal base plate 7-6-1, connection plate inside 7-6-2 and the outer side connecting plate 7-6-3 of adding is straight The thickness of slab of steel plate and three is 10mm～15mm.

In the present embodiment, described horizonal base plate 7-6-1 and connection plate inside 7-6-2, outer side connecting plate 7-6-3 and be connected steel All with the side of welding between plate 7-6-4 and between junction steel plate 7-6-4 and connection plate inside 7-6-2 and outer side connecting plate 7-6-3 Formula is attached.

In the present embodiment, the quantity of described first bolt mounting holes 7-6-6 is two, two described first bolt mounting holes 7-6-6 is all laid in same level；The quantity of described second bolt mounting holes 7-6-5 is multiple, multiple described second spiral shells Bolt installing hole 7-6-5 is all laid in same level.

Time actually used, the effect of described oblique pushing tow link 7-6 is to be adjusted pushing tow direction.Described outside The effect of connecting plate 7-6-3 is to connect the pre-buried base of described base plate, is connected to described particular by horizontal pre-embedded bolt 1-9 On the pre-buried base of base plate.

As shown in the above, described longitudinal pushing reaction frame 7 is fixedly mounted on the described end by longitudinal pre-embedded bolt 1-8 On the pre-buried base of plate, and longitudinal pushing reaction frame 7 is positioned on front side of the pre-buried base of described base plate；Described oblique pushing reaction frame 7 leads to Crossing horizontal pre-embedded bolt 1-9 to be fixedly mounted on the pre-buried base of described base plate, described oblique pushing reaction frame 7 is positioned at described base plate Inside pre-buried base.

Before oblique pushing tow, the fixing end of described rigid support structure 5 is by multiple described connecting bolts, directly with described The oblique pushing reaction frame (specifically front side junction steel plate 7-5) installed on fixing wing base is locked；And by many Individual described connecting bolt is by the pushing end of rigid support structure 5 and the oblique pushing reaction frame of installation on described pushing tow wing base (specifically front side junction steel plate 7-5) is locked.When pushing tow jack 6 is installed, described pushing tow jack 6 Front end is propped up in the pushing end peaking at described rigid support structure 5 and its rear end is supported on described pushing tow wing base the oblique of installation On pushing reaction frame (specifically on yoke frame 7-3).Should be noted: when being locked, it is impossible to be locked completely, need to reserve Pushing tow displacement, i.e. reserved certain activity space between rigid support structure 5 and oblique pushing reaction frame.

Thus during actual installation, by rigid support structure 5 two ends lay respectively in two described cantilever beam section 2 described in Between pushing reaction frame, and the two ends of rigid support structure 5 are hard-wired with on two pre-buried bases of described base plate respectively Described pushing reaction frame connects.

Time actually used, the rear side bolt installing hole offered on rear side junction steel plate 7-4 in described longitudinal pushing reaction frame 7 7-4-1 is the bolt mounting holes installed for longitudinal pre-embedded bolt 1-8 or described steel plate connecting bolt；

The front side bolt installing hole 7-5-1 offered on described front side junction steel plate 7-5 is to install for described connecting bolt Bolt mounting holes；

Offering the second bolt mounting holes 7-6-5 on described outer side connecting plate 7-6-3 is to install for horizontal pre-embedded bolt 1-9 Bolt mounting holes.

The construction method of a kind of continuous rigid frame bridge closure segment pushing tow base plate pushing tow system as shown in Figure 5, including following Step:

The pre-buried base of step one, base plate is constructed: when constructing two described cantilever beam section 2, at two described cantilevers The beam section 2 end pre-buried base of base plate described in pre-buried a group respectively；

Step 2, top-pushing mechanism are installed: described in the pre-buried base of base plate described in two groups constructed in step one Pushing tow jack 6 is installed on pushing tow wing base, and makes pushing tow jack 6 rear portion prop up to withstand on described pushing tow wing base；

Step 3, rigid support structure is installed: install rigid support structure 5, makes one end of rigid support structure 5 Prop up and withstand on described fixing wing base, and the other end making rigid support construct 5 props up and peaks at pushing tow wing base described in step 2 On, and make pushing tow jack 6 construct 5 layings on the same line with the rigid support of its pushing tow.

In the present embodiment, when in step one, base pre-buried to base plate described in two groups carries out pre-buried, base plate described in two groups is pre-buried The built-in process of base is identical；

When base pre-buried to base plate described in arbitrary group carries out pre-buried, process is as follows:

Step 101, the cantilever beam section 2 that this pre-buried base of group base plate is pre-buried is carried out concrete pouring construction before, will be many All it is fastenedly connected with the framework of steel reinforcement of setting in base plate 2-1 bottom vertical shear reinforcement 1-2 described in road and is integrated；

Step 102, right angle steel plate 1-1 is fixed, and described Interal fixation reinforcing bar spot welding is fixed on right angle steel plate On 1-1, more longitudinal pre-embedded bolt 1-8 and horizontal pre-embedded bolt 1-9 is installed on right angle steel plate 1-1；

Step 103, by described reinforced bar support skeleton, vertical shear reinforcement 1-2 connects as one with described in multiple tracks；

Step 104, synchronize to carry out concrete pouring construction to cantilever beam section 2 and concrete cast-in-situ block 1-3, wait poured mixed After the final set of solidifying soil, complete the pre-buried process of this pre-buried base of group base plate.

Thus, described pushing reaction frame is the highest with the bonding strength of base plate 2-1, and the height of pushing tow point position is relatively Low, additional bending moment is less.Time actually used, can effectively strengthen described pushing reaction by shear reinforcement 1-2 vertical described in multiple tracks Concrete bonding strength between frame and base plate 2-1, improves faying face shearing strength.

In the present embodiment, described longitudinal pushing reaction frame and described oblique pushing reaction frame are external stiff skeleton, Described longitudinal pre-embedded bolt 1-8 and horizontal pre-embedded bolt 1-9 is the connecting bolt for connecting external stiff skeleton.

After described base plate pushing tow system installation, the first longitudinal center's axial location to two described cantilever beam section 2 Measure respectively, further according to longitudinal center's axial location of the described cantilever beam section 2 of two be pre-designed, described outstanding to two The lateral deviation amount that arm beam section 2 exists is determined respectively；Meanwhile, to two described cantilever beam section 2 along longitudinal center's axis Windup-degree measures respectively, and according to measurement result, whether two described cantilever beam section 2 is existed torsion with existing Torsional deflection amount is determined respectively；

Described lateral deviation amount is longitudinal center's axial location of the cantilever beam section 2 measured and this cantilever being pre-designed Between longitudinal center's axial location of beam section 2, difference DELTA d on direction across bridge, refers to Fig. 7-1；Described torsional deflection amount is for measuring The cantilever beam section 2 gone out, along the windup-degree A of longitudinal center's axis, refers to Fig. 7-2.

During actually used, when described longitudinal pushing tow support structure is described longitudinal pushing tow support structure, adopt By base plate pushing tow system of the present invention, cantilever beam section 2 carried out longitudinal pushing tow (i.e. indulging bridge to promoting)；When described longitudinal pushing tow When being described oblique pushing tow support structure with support structure, use base plate pushing tow system of the present invention that cantilever beam section 2 is entered The oblique pushing tow of row.

Wherein, when the lateral deviation amount that two described cantilever beam section 2 exist and/or torsional deflection, described longitudinal pushing tow It is described oblique pushing tow support structure with support structure, refers to Fig. 1-2, use base plate pushing tow system of the present invention to cantilever Beam section 2 carries out oblique pushing tow, until being put in place by two described equal pushing tows of cantilever beam section 2, now two described cantilever beam section 2 is vertical Being located along the same line to central axis, lateral deviation amount and the torsional deflection amount of two described cantilever beam section 2 are 0, so The bias correction process of two described cantilever beam section 2 can be completed.

During actually used, when two described cantilever beam section 2 carry out longitudinal pushing tow, described longitudinal pushing tow supports structure Make as described longitudinal pushing tow support structure, refer to Fig. 1-1, the most described lower supporting steel plate 5-1 along vertical bridge to laying.

Embodiment 2

As shown in Figure 6, in the present embodiment, as different from Example 1: described rigid strutting piece is the second support member, institute Stating the second support member to be made up of two symmetrical support angle steel 5-2-2 laid, two described support angle steel 5-2-2 are all welded and fixed On lower supporting steel plate 5-1.

In the present embodiment, remainder structure and the annexation of used base plate pushing tow system are the most same as in Example 1.

In the present embodiment, the base plate pushing tow system construction method used is same as in Example 1.

Embodiment 3

As it is shown in fig. 7, in the present embodiment, as different from Example 1: described rigid strutting piece is the 3rd support member, institute State the 3rd support member by the symmetrical vertical steel plate 5-2-3 laid in two, left and right and to be supported on two described vertical steel plate 5-2-3 Upper supporting steel plate 5-2-4 composition.Further, two described vertical steel plate 5-2-3 are all weldingly fixed on lower supporting steel plate 5-1. What described upper supporting steel plate 5-2-4 was rectangular steel plates and its size with lower supporting steel plate 5-1 is equivalently-sized, described upper supporting steel plate All it is fixedly connected with welding manner between 5-2-4 and two described vertical steel plate 5-2-3.

In the present embodiment, remainder structure and the annexation of used base plate pushing tow system are the most same as in Example 1.

In the present embodiment, the base plate pushing tow system construction method used is same as in Example 1.

The above, be only presently preferred embodiments of the present invention, not impose any restrictions the present invention, every according to the present invention Any simple modification, change and the equivalent structure change that above example is made by technical spirit, all still falls within skill of the present invention In the protection domain of art scheme.

Claims (10)

1. a continuous rigid frame bridge closure segment pushing tow base plate pushing tow system, it is characterised in that: include that two groups are laid in institute respectively Construction continuous rigid frame bridge two cantilever beam section (2) ends the pre-buried base of base plate, be supported in the pre-buried base of base plate described in two groups Between rigid support structure (5) and rigid support structure (5) is carried out the top-pushing mechanism of pushing tow, described cantilever beam section (2) is In Reinforced Concrete Box Girder, the girder closure segment of constructed continuous rigid frame bridge is for be connected between two described cantilever beam section (2) Closure segment；Often organize the pre-buried base of described base plate and all include two described base plates being laid on same described cantilever beam section (2) Pre-buried base, two pre-buried bases of described base plate are respectively laid in base plate (2-1) left and right sides, top of cantilever beam section (2) The pre-buried base in left side (3) and the pre-buried base in right side (4), the pre-buried base in described left side (3) and right side pre-buried base (4) are respectively positioned on outstanding Between the left and right sides web (2-2) of arm beam section (2)；

Described rigid support structure (5) is longitudinal pushing tow support structure or oblique pushing tow support structure；Described longitudinal pushing tow Prop up respectively with the two ends of support structure on the pre-buried base in the left side (3) peaked in the pre-buried base of base plate described in two groups or described in two groups On the pre-buried base in right side (4) in the pre-buried base of base plate, one end of described oblique pushing tow support structure is propped up and is withstood on described in one group The pre-buried base in left side (3) in the pre-buried base of base plate is upper and its other end props up the right side withstood in another group pre-buried base of described base plate On the pre-buried base in side (4)；

One end of described rigid support structure (5) is pushing end for fixing end and its other end, described fixing end support top described The pre-buried base of base plate is fixing wing base, and the pre-buried base of described base plate of described pushing end support top is pushing tow wing base；

Described top-pushing mechanism is laid between described pushing end and the described pushing tow wing base of rigid support structure (5)；Described top Pushing mechanism is pushing tow jack (6), and described pushing tow jack (6) rear portion is propped up and withstood on described pushing tow wing base, and pushing tow is very heavy In the described pushing end withstanding on rigid support structure (5) of anterior of top (6)；Described pushing tow jack (6) is firm with its pushing tow Property support structure (5) lay on the same line.

2. according to the continuous rigid frame bridge closure segment pushing tow base plate pushing tow system described in claim 1, it is characterised in that: two groups of institutes State the structure of four pre-buried bases of described base plate in the pre-buried base of base plate the most identical；Often organize two in the pre-buried base of described base plate The pre-buried base of described base plate is symmetrically laid.

3. according to the continuous rigid frame bridge closure segment pushing tow base plate pushing tow system described in claim 1 or 2, it is characterised in that: institute State the pre-buried base of base plate to include the right angle steel plate (1-1) being laid in cantilever beam section (2), be positioned at right angle steel plate (1-1) side Concrete cast-in-situ block (1-3) and multiple tracks all pour the vertical shear reinforcement (1-2) in concrete cast-in-situ block (1-3), multiple tracks institute State vertical shear reinforcement (1-2) all in vertically to laying；It is one that described concrete cast-in-situ block (1-3) and cantilever beam section (2) pour Body, described right angle steel plate (1-1) is laid on the corner between the base plate (2-1) of cantilever beam section (2) and web (2-2)；Described Right angle steel plate (1-1) is by being positioned at the front side steel plate (1-1-1) of concrete cast-in-situ block (1-3) front side and being positioned at concrete cast-in-situ block (1-3) the inner side steel plate (1-1-2) of inner side is formed by connecting, and described front side steel plate (1-1-1) and inner side steel plate (1-1-2) are all in perpendicular Directly all imbedding in base plate (2-1) to laying and the bottom of the two, described front side steel plate (1-1-1) is laid along direction across bridge, institute State inner side steel plate (1-1-2) along vertical bridge to laying；Described in multiple tracks, base plate is all imbedded in the lower end of vertical shear reinforcement (1-2) (2-1) in；The multiple rows of multiple row of vertical shear reinforcement (1-2) described in multiple tracks point is laid, multiple rows of described vertical shear reinforcement (1-2) In be positioned at vertical shear reinforcement (1-2) described in a row of front side and be all weldingly fixed on the medial wall of front side steel plate (1-1-1), Vertical shear reinforcement (1-2) described in multiple row is positioned at vertical shear reinforcement (1-2) described in the string of inner side be all weldingly fixed on On the medial wall of inner side steel plate (1-1-2).

4. according to the continuous rigid frame bridge closure segment pushing tow base plate pushing tow system described in claim 1 or 2, it is characterised in that: institute State rigid support structure (5) and include lower supporting steel plate (5-1), the rigid strutting piece and two being laid on lower supporting steel plate (5-1) The individual end steel plate (5-3) being laid in lower supporting steel plate (5-1) rear and front end respectively, described lower supporting steel plate (5-1) and described Rigid strutting piece all carries out along the pushing tow direction of cantilever beam section (2) laying and the length of the two is identical；Described lower supporting steel plate (5- 1) being rectangular steel plates, described rigid strutting piece is positioned at the surface of lower supporting steel plate (5-1) and its width less than lower supporting steel plate (5-1) width；Two described ends steel plate (5-3) all carry out laying and the two along the width of lower supporting steel plate (5-1) It is vertical steel plate；Before and after described lower supporting steel plate (5-1), two ends are separately fixed on two described ends steel plate (5-3), And two ends are separately fixed on two described ends steel plate (5-3) before and after described rigid strutting piece；Described rigid strutting piece welds Connecing and be fixed on lower supporting steel plate (5-1), described rigid strutting piece is the first support member, the second support member or the 3rd support member, Described first support member is first channel-section steel (5-2-1) tipped upside down on lower supporting steel plate (5-1), described second support member by Two symmetrical support angle steel (5-2-2) compositions laid, described 3rd support member is by the symmetrical vertical steel plate laid in two, left and right (2-3) with upper supporting steel plate (2-4) composition being supported on two described vertical steel plates (2-3)；Described lower supporting steel plate (5-1) Rear and front end, left side be provided with multiple respectively for multiple left sides fix bolt install left side bolt mounting holes (5-1-1) and On the right side of it, rear and front end is provided with multiple right side bolt mounting holes (5-1-2) fixing bolt installation respectively for multiple right sides, Multiple described left sides bolt mounting holes (5-1-1) and multiple described right side bolt mounting holes (5-1-2) are all along lower supporting steel plate (5- 1) length direction is laid from front to back；Described lower supporting steel plate (5-1) fixes bolt with many by multiple described left sides Individual described right side is fixed bolt lock and is fastened in the cantilever beam section of constructed continuous rigid frame bridge；Two described end steel plate (5- 3) the left and right sides is provided with the connecting bolt installing hole (5-3-1) installed for connecting bolt.

5., according to a kind of continuous rigid frame bridge closure segment pushing tow base plate pushing tow system described in claim 1 or 2, its feature exists In: the quantity of described longitudinal pushing tow support structure is two, and the two ends of a described longitudinal pushing tow support structure are propped up respectively Peak between the pre-buried base in the left side (3) in the pre-buried base of base plate described in two groups, another described longitudinal pushing tow support structure Two ends prop up respectively between the pre-buried base in the right side (4) peaked in the pre-buried base of base plate described in two groups；

The quantity of described oblique pushing tow support structure is one.

6., according to a kind of continuous rigid frame bridge closure segment pushing tow base plate pushing tow system described in claim 1 or 2, its feature exists In: being all installed with pushing reaction frame on described fixing wing base and described pushing tow wing base, described pushing reaction frame is vertical To pushing reaction frame (7) and/or oblique pushing reaction frame；

The two ends of described longitudinal pushing tow support structure are all propped up and are withstood on longitudinal pushing reaction frame (7), and described oblique pushing tow is with propping up The two ends of support structure are all propped up and are withstood on described oblique pushing reaction frame.

7. according to a kind of continuous rigid frame bridge closure segment pushing tow base plate pushing tow system described in claim 6, it is characterised in that: institute State longitudinal pushing reaction frame (7) include two, left and right symmetrical lay vertical supports, be positioned at two described vertical supports after The rear side junction steel plate (7-4) of side, two front side junction steel plates (7-5) being laid in two described vertical supports front ends respectively And be connected between two described vertical supports and the yoke frame (7-3) of confession pushing tow jack (6) support top, described rear side connects Steel plate (7-4) is fastenedly connected with the pre-buried base of described base plate in cantilever beam section (2)；After two described vertical supports End is each attached on the front side wall of rear side junction steel plate (7-4), and it is front that described yoke frame (7-3) is positioned at rear side junction steel plate (7-4) Side, described yoke frame (7-3) be channel-section steel and thereafter sidewall be fixed on rear side junction steel plate (7-4) front side wall on；Described rear side Have multiple rear side bolt installing hole (7-4-1) on junction steel plate (7-4), each described front side junction steel plate (7-5) is all opened There is front side bolt installing hole (7-5-1)；Two described vertical supports be parallel laying and the two be laid in same level, Described rear side junction steel plate (7-4) and two described front sides junction steel plate (7-5) are all in vertically to laying and three is all with described The perpendicular laying of vertical supports, two described front sides junction steel plate (7-5) are laid on same vertical plane；Described yoke frame (7-3) left and right sidewall is separately fixed on two described vertical supports；Described vertical supports is angle steel or by horizontal steel Plate (7-1) and the longitudinal steel plate (7-2) being fixed on horizontal steel plate (7-1) are welded, and described longitudinal steel plate (7-2) is in vertically To laying；Described rear side junction steel plate (7-4) base pre-buried with described base plate is connected.

8. according to a kind of continuous rigid frame bridge closure segment pushing tow base plate pushing tow system described in claim 7, it is characterised in that: institute State oblique pushing reaction frame to be formed by connecting by longitudinal pushing reaction frame (7) and oblique pushing tow link (7-6)；

Described oblique pushing tow link (7-6) includes horizonal base plate (7-6-1), is fixed on horizonal base plate (7-6-1) inside front Connection plate inside (7-6-2) and be fixed on horizonal base plate (7-6-1) outside above outer side connecting plate (7-6-3), described in It is attached by multiple junction steel plates (7-6-4) between side connecting plate (7-6-2) and outer side connecting plate (7-6-3), described company Connect steel plate (7-6-4) to be fixed on horizonal base plate (7-6-1)；Described connection plate inside (7-6-2), outer side connecting plate (7-6-3) With junction steel plate (7-6-4) all in vertically to laying；Between described connection plate inside (7-6-2) and rear side junction steel plate (7-4) It is attached by multiple steel plate connecting bolts, described connection plate inside (7-6-2) has and pacifies for described steel plate connecting bolt First bolt mounting holes (7-6-6) of dress；The second bolt mounting holes (7-6-5) is had on described outer side connecting plate (7-6-3)；

Described outer side connecting plate (7-6-3) base pre-buried with described base plate is fastenedly connected, described connection plate inside (7-6-2) With rear side junction steel plate (7-4) in parallel laying；Rear side junction steel plate (7-4) in described oblique pushing reaction frame is by oblique Pushing tow link (7-6) base pre-buried with described base plate is connected.

9. the method that base plate pushing tow system as claimed in claim 1 is constructed, it is characterised in that: the method include with Lower step:

The pre-buried base of step one, base plate is constructed: when constructing two described cantilever beam section (2), at two described cantilever beams Section (2) end pre-buried base of base plate described in pre-buried a group respectively；

Step 2, top-pushing mechanism are installed: the described pushing tow in the pre-buried base of base plate described in two groups constructed in step one Pushing tow jack (6) is installed on wing base, and makes pushing tow jack (6) rear portion prop up to withstand on described pushing tow wing base；

Step 3, rigid support structure is installed: install rigid support structure (5), makes one end of rigid support structure (5) Prop up and withstand on described fixing wing base, and the other end making rigid support construct (5) props up and peaks at the bottom of pushing tow side described in step 2 On seat, and pushing tow jack (6) is made to construct (5) laying on the same line with the rigid support of its pushing tow.

The most in accordance with the method for claim 9, it is characterised in that: the pre-buried base of base plate described in step one includes being laid in Right angle steel plate (1-1) in cantilever beam section (2), the concrete cast-in-situ block (1-3) being positioned at right angle steel plate (1-1) side and multiple tracks are equal Pouring the vertical shear reinforcement (1-2) in concrete cast-in-situ block (1-3), vertical shear reinforcement (1-2) described in multiple tracks is all in perpendicular Straight to laying；Described concrete cast-in-situ block (1-3) pours with cantilever beam section (2) and is integrated, and described right angle steel plate (1-1) is laid in On corner between base plate (2-1) and the web (2-2) of cantilever beam section (2)；Described right angle steel plate (1-1) is existing by being positioned at concrete Water the front side steel plate (1-1-1) of block (1-3) front side and be positioned at the inner side steel plate (1-1-2) of concrete cast-in-situ block (1-3) inner side even Connecing and form, described front side steel plate (1-1-1) and inner side steel plate (1-1-2) are all in vertically all imbedding the end to laying and the bottom of the two In plate (2-1), described front side steel plate (1-1-1) is laid along direction across bridge, and described inner side steel plate (1-1-2) is along indulging bridge to carrying out Lay；The lower end of vertical shear reinforcement (1-2) described in multiple tracks is all imbedded in base plate (2-1)；Vertical shear reinforcement (1-described in multiple tracks 2) divide multiple rows of multiple row to lay, multiple rows of described vertical shear reinforcement (1-2) is positioned at vertical shearing resistance described in a row of front side Reinforcing bar (1-2) is all weldingly fixed on the medial wall of front side steel plate (1-1-1), position in vertical shear reinforcement (1-2) described in multiple row Vertical shear reinforcement (1-2) described in string in inner side is all weldingly fixed on the medial wall of inner side steel plate (1-1-2)；

When in step one, base pre-buried to base plate described in two groups carries out pre-buried, the built-in process phase of the pre-buried base of base plate described in two groups With；

When base pre-buried to base plate described in arbitrary group carries out pre-buried, process is as follows:

Step 101, the cantilever beam section (2) that this pre-buried base of group base plate is pre-buried is carried out concrete pouring construction before, by multiple tracks Described vertical shear reinforcement (1-2) bottom is all fastenedly connected with the framework of steel reinforcement of setting in base plate (2-1) and is integrated；

Step 102, right angle steel plate (1-1) is fixed, and described Interal fixation reinforcing bar spot welding is fixed on right angle steel plate (1- 1) on, then at right angle steel plate (1-1) the longitudinal pre-embedded bolt (1-8) of upper installation and horizontal pre-embedded bolt (1-9)；

Step 103, by described reinforced bar support skeleton, vertical shear reinforcement (1-2) connects as one with described in multiple tracks；

Step 104, synchronize to carry out concrete pouring construction to cantilever beam section (2) and concrete cast-in-situ block (1-3), wait poured mixed After the final set of solidifying soil, complete the pre-buried process of this pre-buried base of group base plate.