CN105970831B - A kind of continuous rigid frame bridge closure segment pushing tow bottom plate pushing tow system and its construction method - Google Patents

Abstract

The invention discloses a kind of continuous rigid frame bridge closure segment pushing tow bottom plate pushing tow system and its construction method, the bottom plate pushing tow system includes the pre-buried base of bottom plate of two groups of two cantilever beam section ends for being laid in continuous rigid frame bridge respectively, the rigid support being supported between two groups of pre-buried bases of bottom plate construction and the top-pushing mechanism for carrying out pushing tow is constructed to rigid support；Every group of pre-buried base of bottom plate includes the two pre-buried bases of the bottom plate being laid in same cantilever beam section in left and right；Rigid support is configured to longitudinal pushing tow with support structure or oblique pushing tow support structure；One end of rigid support construction is fixing end and its other end is pushing end；The construction method includes step：First, the pre-buried base construction of bottom plate；2nd, top-pushing mechanism is installed；3rd, rigid support construction installation.Reasonable in design, easy construction of the invention and using effect is good, can it is easy, be rapidly completed the pushing tow process of closure segment both sides cantilever beam section, and can meet that the lateral deviation of cantilever beam section and torsional deflection correct demand.

Description

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

Technical field

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

Background technology

Continuous rigid frame bridge is the continuous bridge of pier consolidation, divide main span be continuous beam multispan rigid frame bridge and more Span Continuous- Rigid frame bridge, using prestressed reinforced concrete construction, there is the main pier of two or more, using pier consolidation system, have T-shaped rigid frame bridge and The advantages of continuous bridge.Closure segment is the key link of continuous rigid frame bridge construction, to reduce the operation phase due to concrete shrinkage Xu Become and temperature change is to the adverse effect of bridge structure, when continuous rigid frame bridge closure segment is constructed, typically used in closure segment very heavy Pushing tow is pushed up, applies horizontal jacking force respectively to closure segment both sides the cantilever beam sections of closure segment both sides (be specifically) (according to being constructed The across footpath of continuous rigid frame bridge applies horizontal jacking force typically in 80t~150t, indivedual documents, which record, to be adopted with closing up preceding temperature Horizontal jacking force is 800t), bridge internal force status is adjusted, 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, general more using firm Property support structure (also known as stiff skeleton) with reference to the interim tensioning of steel beam of closure segment part enter line-locked mode, in closure segment coagulation Soil is formed be rigidly connected (also referred to as false closure) before pouring.Use is built-in more than stiff skeleton early stage, i.e. stiff skeleton and pushing tow dress Setting in stiff skeleton within concreting face, is completely included after closure segment concreting, stiff skeleton is as permanent Structure retains.After the structure tensioning, part axial compressive force is shared by built-in stiff skeleton, has been advantageous to reduction and closes up section concrete Local compression, but the later stage, due to the influence of concrete shrinkage and creep, compression will be weighed progressively between stiff skeleton and concrete New distribution, stiff skeleton will absorb most of compression from prestressed strand, thus be easily caused close up section concrete pressure should Power deposit reduces, and increases cracking risk.

In view of the foregoing, it is more in recent years using external stiff skeleton (also referred to as outer rigid support construction).External strength Property skeleton be located at beyond concreting face, belong to temporary component, remove after the completion of closure segment concreting, be not involved in long-term Stress；It is characterized in that early stage internal force is fully transferred to be undertaken by closing up section concrete, compression deposit is sufficient.

The T structures (also referred to as T structures cantilever beam) of continuous rigid frame bridge closure segment both sides are constructed due to more using Hanging Basket cantilever pouring, because And measure, monitor, formwork erection, tensioning etc. inevitably can produce error, following three are normally behaved as after the various accumulations of error The error of kind situation：The discrepancy in elevation be present in the firstth, elevation difference, i.e. closure segment both ends；Secondth, lateral deviation, i.e. closure segment both ends exist Deviation on direction across bridge be present, deviation be present between the bridge longitudinal axis at closure segment both ends；3rd, torsional deflection, i.e. closure segment The box beam at both ends is asymmetric, the torsion using beam center of gravity as axle be present.

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

Theoretically, closure segment both ends cantilever pouring construction quality, progress and construction monitoring are carried out, and are typically not in miss The situation that difference requires beyond construction technique normalizing, but often there is dimensional discrepancy is larger to close and exceed code requirement model in practice of construction Situation about enclosing, now, certain adverse effect can be caused to structure, such as hogging moment beam and close up the prestress pipe deviation of beam compared with Greatly, it can cause that pipeline concrete stress state is uncontrollable during tensioning, even result in Local Cracking；Regular reinforcement connection is tired Difficulty, and after connection on no longer same axis, also can locally have a negative impact to concrete under external force effect, increase cracking wind Danger.Therefore, it is necessary to be corrected on excessive deviation on the premise of bridge structure internal force status is influenceed not too much, also referred to as push up Push away correction.

Wherein, for the elevation difference at the first above-mentioned closure segment both ends, can be fitted by the method for uneven preloading Work as adjustment, specific adjustment process is as follows：In closure segment concrete pouring construction, typically entered using other weights such as water tank or sandbags Row counterweight, do not consider often to hold the half with weight is closure segment weight concrete during discrepancy in elevation adjustment, with concrete construction progressively Unloading, i.e., suitably adjust elevation difference by the different counterweight in cantilever both ends.It is but existing to above-mentioned second and the third deviation Nowadays without a set of corresponding correction method of adjustment.

In addition, when carrying out pushing tow using outer rigid support construction (such as external stiff skeleton), jacking force should be first before applying Preburied component is set above the bottom plate and top plate of closure segment, and it is pre-buried in the implementation of last cantilever pouring stage.Wherein, even Continuous steel bridge folding section (also referred to as girder closure segment) refers to the beam section closed 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 being designed at present to bottom plate pushing tow base, because closure segment base plate thickness is smaller, typically in 25cm~35cm There is the problem of depth deficiency in the fastener such as left and right, direct embedding steel plate bolt, therefore need to locally increase thickness.Existing technology Scheme is to be used as bottom plate pushing tow base in advance increased concrete block top pre-embedded steel slab, but the technical scheme exist it is following scarce Fall into：Firstth, construction and force-transmission mechanism is complicated, and longitudinal jacking force of rigid support construction is first transferred to pre-embedded steel slab, then by pre- Bury steel plate and be transferred to concrete block, be finally transferred to closure segment underplate concrete again；Secondth, pushing tow point position height is high, adds Moment of flexure is big.

Nowadays, when carrying out pushing tow to continuous rigid frame bridge closure segment, special reaction frame is generally all not provided with, but pass through Pre-buried shape steel bracket takes into account reaction frame as base, also has and is directly connected to rigid bracing (i.e. outer rigid support by pre-buried base Construction) method, the part for influenceing concrete of bridge deck paving is cut away after the completion of pushing tow again, but above-mentioned existing arrangement and method for construction is equal Following defect be present：Firstth, locking and pushing tow position are located at the middle part of outer rigid support construction, due to jack to be set Cause the middle part construction of outer rigid support construction complicated, the integral rigidity of outer rigid support construction reduces；Secondth, locking is adopted With Site Welding, error is not easy to adjust after construction trouble, and welding lock；Need to cut after the completion of 3rd, pushing tow and concreting Dismounting is cut, recycling rate of waterused is low；4th, component gravity center is higher, and additional bending moment is big during pushing tow.

In addition, when carrying out pushing tow to continuous rigid frame bridge closure segment, typically apply longitudinal jacking force；Indivedual bridge construction mistakes Cheng Zhong, can also there are lateral deviation and torsional deflection (i.e. construction error), now need to be rectified a deviation by oblique pushing tow.But mesh Before, lack the reaction frame that can carry out oblique pushing tow, oblique pushing tow can not be carried out.Wherein, lateral deviation refers to continuous rigid frame bridge In deviation present on direction across bridge, torsional deflection refers to that continuous rigid frame bridge is anisopleual and exists with beam longitudinal center axis Centered on line torsion problem.

The content of the invention

In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that provide a kind of continuous rigid frame Bridge closure segment pushing tow bottom 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 can meet that the lateral deviation of cantilever beam section and torsional deflection correct need Ask.

In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of continuous rigid frame bridge closure segment pushing tow is used Bottom plate pushing tow system, it is characterised in that：Including two groups of cantilever beam section ends of be laid in constructed continuous rigid frame bridge respectively two The pre-buried base of bottom plate, be supported between the pre-buried base of bottom plate described in two groups rigid support construction and rigid support is constructed into The top-pushing mechanism of row pushing tow, the cantilever beam section are In Reinforced Concrete Box Girder, and the girder closure segment for continuous rigid frame bridge of constructing is The closure segment being connected between two cantilever beam sections；The pre-buried base of bottom plate described in every group is laid in same including two The pre-buried base of the bottom plate in the cantilever beam section, two pre-buried bases of bottom plate are respectively the bottom for being laid in cantilever beam section The pre-buried base of the pre-buried base in left side and right side at left and right sides of plate top, the pre-buried base in the left side and the right side equal position of pre-buried base Between the left and right sides web of cantilever beam section；

The rigid support is configured to longitudinal pushing tow with support structure or oblique pushing tow support structure；Longitudinal pushing tow Propped up and peaked on the pre-buried base in left side in the pre-buried base of bottom plate described in two groups or bottom described in two groups respectively with the both ends of support structure On the pre-buried base in right side in the pre-buried base of plate, it is pre- that the oblique pushing tow with one end branch of support structure withstands on bottom plate described in one group On the pre-buried base in left side in buried end seat and the pre- buried end in right side that its other end branch is withstood in the pre-buried base of bottom plate described in another group On seat；

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

The top-pushing mechanism is laid between the pushing end and the pushing tow wing base of rigid support construction；The top Pushing mechanism is pushing tow jack, and the pushing tow jack rear portion branch is withstood on the pushing tow wing base, and pushing tow jack is anterior Branch is withstood in the pushing end of rigid support construction；The rigid support construction of the pushing tow jack and its pushing tow is laid in On same straight line.

Above-mentioned continuous rigid frame bridge closure segment pushing tow bottom plate pushing tow system, it is characterized in that：The pre-buried base of bottom plate described in two groups In four pre-buried bases of bottom plate structure all same；Two pre- buried ends of bottom plate in the pre-buried base of bottom plate described in every group Seat is laid in symmetrical.

Above-mentioned continuous rigid frame bridge closure segment pushing tow bottom plate pushing tow system, it is characterized in that：The pre-buried base of bottom plate includes Right angle steel plate, the concrete cast-in-situ block positioned at right angle steel plate side and the multiple tracks being laid in cantilever beam section are poured in concrete Vertical shear reinforcement in cast-in-place piece, vertical shear reinforcement described in multiple tracks are in vertically to laying；The concrete cast-in-situ block with Cantilever beam section, which pours, to be integrated, and the right angle steel plate is laid on the corner between the bottom plate of cantilever beam section and web；It is described straight Gusset connected by the front side steel plate on front side of concrete cast-in-situ block with the inner side steel plate on the inside of concrete cast-in-situ block and Into the front side steel plate and inner side steel plate are in be embedded to vertically to laying and the bottom of the two in bottom plate, the front side steel plate Laid along direction across bridge, the inner side steel plate is along vertical bridge to being laid；The lower end of vertical shear reinforcement is buried described in multiple tracks Enter in bottom plate；The multiple rows of multiple row of vertical shear reinforcement described in multiple tracks point is laid, positioned at most in multiple rows of vertical shear reinforcement Vertical shear reinforcement described in one row of front side is weldingly fixed on the madial wall of front side steel plate, vertical shear reinforcement described in multiple row In a row vertical shear reinforcement positioned at most inner side be weldingly fixed on the madial wall of inner side steel plate.

Above-mentioned continuous rigid frame bridge closure segment pushing tow bottom plate pushing tow system, it is characterized in that：The rigid support construction 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, the lower supporting steel plate and the rigid strutting piece laid along the pushing tow direction of cantilever beam section and the two Length is identical；The lower supporting steel plate is rectangular steel plates, and the rigid strutting piece is located at the surface of lower supporting steel plate and it is wide Width of the degree less than lower supporting steel plate；Two end steel plates are laid along the width of lower supporting steel plate and the two It is vertical steel plate；The rear and front end of the lower supporting steel plate is separately fixed on two end steel plates, and the rigidity The rear and front end of support member is separately fixed on two end steel plates；The rigid strutting piece is weldingly fixed on lower supporting steel On plate, the rigid strutting piece is the first support member, the second support member or the 3rd support member, and first support member is one and fallen The first channel-section steel being buckled on lower supporting steel plate, second support member are made up of two support angle steels symmetrically laid, and described Three support members are by the vertical steel plate symmetrically laid of left and right two and the upper supporting steel plate group being supported on two vertical steel plates Into；The left side rear and front end of the lower supporting steel plate is provided with multiple respectively for the left side spiral shell of multiple left side fixing bolts installation Bolt mounting hole and its right side rear and front end are provided with multiple respectively for the right side bolt installation of multiple right side fixing bolts installation Hole, multiple left side bolt mounting holes and multiple right side bolt mounting holes are along the length direction of lower supporting steel plate by preceding Laid after；The lower supporting steel plate is locked by multiple left side fixing bolts and multiple right side fixing bolts It is fixed in the cantilever beam section of constructed continuous rigid frame bridge；It is provided with left and right sides of two end steel plates for connection spiral shell The connecting bolt mounting hole of bolt installation.

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

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

Above-mentioned continuous rigid frame bridge closure segment pushing tow bottom plate pushing tow system, it is characterized in that：The fixed wing base and described Pushing reaction frame is installed with pushing tow wing base, the pushing reaction frame is longitudinal pushing reaction frame and/or oblique top Push away reaction frame；

Longitudinal pushing tow is propped up with the both ends of support structure and withstood on longitudinal pushing reaction frame, the oblique pushing tow branch The both ends of support construction, which are propped up, to be withstood on the oblique pushing reaction frame.

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

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

The oblique pushing tow link includes horizonal base plate, the connection plate inside for being fixed on horizonal base plate inside front and consolidated The outer side connecting plate of top on the outside of horizonal base plate is scheduled on, passes through multiple connection steel between the connection plate inside and outer side connecting plate Plate is attached, and the junction steel plate is fixed on horizonal base plate；The connection plate inside, outer side connecting plate and junction steel plate are equal In vertically to laying；It is attached between connection plate inside and the rear side junction steel plate by multiple steel plate connecting bolts, institute State the first bolt mounting holes being provided with connection plate inside for steel plate connecting bolt installation；It is provided with the outer side connecting plate Second bolt mounting holes；

The outer side connecting plate is fastenedly connected with the pre-buried base of the bottom plate, and the connection plate inside is connected with rear side Steel plate is in parallel laying；Rear side junction steel plate in the oblique pushing reaction frame passes through oblique pushing tow link and the bottom plate Pre-buried base connection.

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

Step 1: the pre-buried base construction of bottom plate：When being constructed to two cantilever beam sections, in two cantilever beams The pre-buried base of bottom plate described in pre-buried one group of section end difference；

Step 2: top-pushing mechanism is installed：Described in being constructed in step 1 in the pre-buried base of bottom plate described in two groups of completion Pushing tow jack is installed on pushing tow wing base, and pushing tow jack rear portion branch is withstood on the pushing tow wing base；

Step 3: rigid support construction installation：Rigid support construction is installed, one end branch for constructing rigid support Withstand on the fixed wing base, and the other end branch for constructing rigid support is peaked on pushing tow wing base described in step 2, And the rigid support construction of pushing tow jack and its pushing tow is set to lay on the same line.

The above method, it is characterized in that：The pre-buried base of bottom plate described in step 1 includes the right angle being laid in cantilever beam section Steel plate, the concrete cast-in-situ block positioned at right angle steel plate side and multiple tracks are poured in the vertical shearing resistance steel in concrete cast-in-situ block Muscle, vertical shear reinforcement described in multiple tracks are in vertically to laying；The concrete cast-in-situ block pours with cantilever beam section to be integrated, institute Right angle steel plate is stated to be laid on the corner between the bottom plate of cantilever beam section and web；The right angle steel plate is by positioned at concrete cast-in-situ Front side steel plate on front side of block and the inner side steel plate on the inside of concrete cast-in-situ block are formed by connecting, the front side steel plate and inner side steel Plate in being embedded to vertically to laying and the bottom of the two in bottom plate, along direction across bridge laid by the front side steel plate, described interior Side steel plate is along vertical bridge to being laid；The lower end of vertical shear reinforcement is embedded in bottom plate described in multiple tracks；Vertically resist described in multiple tracks The multiple rows of multiple row of shear-steel muscle point is laid, positioned at vertical shearing resistance steel described in a most row of front side in multiple rows of vertical shear reinforcement Muscle is weldingly fixed on the madial wall of front side steel plate, and the row in vertical shear reinforcement described in multiple row positioned at most inner side are described perpendicular It is weldingly fixed on to shear reinforcement on the madial wall of inner side steel plate；

When carrying out pre-buried to the pre-buried base of bottom plate described in two groups in step 1, the pre-buried side of the pre-buried base of bottom plate described in two groups Method is identical；

When carrying out pre-buried to the pre-buried base of bottom plate described in any group, process is as follows：

Before step 101, the cantilever beam section pre-buried to the pre-buried base of this group of bottom plate carry out concrete pouring construction, by multiple tracks The framework of steel reinforcement of the vertical shear reinforcement bottom with being set in bottom plate, which is fastenedly connected, to be integrated；

Step 102, right angle steel plate is fixed, and the 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, vertical shear reinforcement described in the reinforced bar support skeleton and multiple tracks connected as one；

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

The present invention has advantages below compared with prior art：

1st, simple in construction, reasonable in design and easy construction, input construction cost are relatively low.

2nd, the pre-buried understructure of used bottom plate is simple, reasonable in design and input cost is relatively low, processing and fabricating and installation Lay that easy, construction cost is relatively low, it is the main right angle steel plate for including being laid in the cantilever beam section of constructed continuous rigid frame bridge, more Road be laid in vertical shear reinforcement on the inside of steel square plate, by be filled in the concreting on the inside of right angle steel plate be molded it is mixed Solidifying cast-in-place piece of soil, the reinforced bar support skeleton being laid in concrete cast-in-situ block and the pre-buried spiral shell in longitudinal direction on right angle steel plate Bolt and horizontal pre-embedded bolt, input cost is low and easy construction.The pre-buried base using effect of the bottom plate is good and practical value is high, tool Have the advantage that：Firstth, simple structure, it is easy to process, formed using steel plate and reinforcement construction；Secondth, convenient and quick construction, no Influence other process progresses, it is not necessary to Site Welding；3rd, rationally it is connected with the bottom plate original distributing bar of cantilever beam section 2, scene Overall stress；4th, it is easy to connect, reliable with top-pushing mechanism；5th, it is strong that reliable and connection is connected with the bottom plate of cantilever beam section 2 Degree is high；6th, the pushing reaction frame being connected with the pre-buried base of the bottom plate and outer rigid support construction can be repeatedly utilized so that；7th, Occupation mode is flexible, and regardless of pushing end and fixing end, scene determines that pushing end is identical with fixing end construction, is not easy as needed Get wrong；8th, using easy to operate, it is easy to carry out the site error adjustment of cantilever beam section；9th, rational in infrastructure, pushing tow adds Moment of flexure is small, cancels the pre-embedded steel slab above concrete block in the prior art, directly simplifies structure as pushing tow point using concrete block While making, pushing tow point height is effectively reduced；Tenth, can be carried out using with bottom plate pushing tow identical reaction frame and rigid bracing Pushing tow；11st, dismounting is convenient and swift, and repeats and utilize after removing；12nd, power transmission is reasonable, and rigid support construction is indulged Cast-in-place concrete block is transferred directly to jacking force, and cast-in-place concrete block is poured with closure segment underplate concrete and is integrated, because It is simple for force-transmission mechanism.During actual use, longitudinal pushing tow can be carried out to cantilever beam section using the pre-buried base of the bottom plate, can also Oblique pushing tow adjustment deviation is carried out to cantilever beam section.Thus, the used pre-buried understructure of bottom plate is simple, reasonable in design and apply Work is easy, using effect is good, and pushing tow point position height high with bottom plate bonding strength is relatively low, power transmission is reasonable.

3rd, used rigid support structural texture is simple, reasonable in design and input cost is relatively low, processing and fabricating and installation Simplicity is laid, construction cost is relatively low, completes to process in processing factory in advance, machining accuracy is easy to ensure.Also, rigid support constructs It is reasonable in design, mainly laid respectively including lower supporting steel plate, the rigid strutting piece being laid on lower supporting steel plate and two End steel plate in lower supporting steel plate rear and front end, actual installation are easy.During practice of construction, installed by lower supporting steel plate both ends Vertical bolt rigid support construction is carried out it is spacing, it is ensured that it is pushing tow process safety, reliable, rigid support construction with it is pre-buried Connected between base and reaction frame easy, reliable；Also, rigid support is constructed with being installed on pre-buried base by end steel plate Reaction frame be locked.Rigid support construction uses end pushing tow mode, convenient and quick construction, and scene only needs to carry out Bolt connection, scene need not weld, and construction speed is fast, not influence other process progresses.Also, pushing tow position is positioned at firm Property support structure end, it is continuous to be effectively ensured rigidity, can rigidly meet pushing tow demand.Meanwhile used rigid support structure The construction standard made, pushing end is identical with fixed end structure, is not easy to get wrong, and practical operation is easy.Also, rigid support constructs Remove it is convenient and swift, and remove after repeat utilize, high recycling rate.In addition, used rigid support construction center of gravity is low, The additional bending moment during pushing tow can be effectively reduced.Thus, using effect is good and practical value is high, the jacking force of pushing tow jack Put on by rigid support construction on pre-buried base, rigid support construction with pushing reaction frame lock admittedly after the completion of pushing tow It is fixed, and be securedly mounted on the pre-buried base of bottom plate.During actual use, rigid support constructs applied widely, can be used to close Hold together the vertical bridge of section to pushing tow process, can be used for the oblique pushing tow process of closure segment.Thus, used rigid support construction knot Structure is simple, reasonable in design and easy construction, using effect are good, and scene need not weld, and dismounting is easy, connection is reliable and repeats profit High with rate, caused additional bending moment is smaller during pushing tow.

4th, used longitudinal pushing reaction frame is simple in construction, reasonable in design and input cost is relatively low, processing and fabricating and peace Dress lays simplicity, and construction cost is relatively low, completes to process in processing factory in advance, machining accuracy is easy to ensure.Longitudinal pushing reaction Frame mainly includes two vertical supports symmetrically laid in left and right, the rear side connection steel on rear side of two vertical supports Plate, two front side junction steel plates for being laid in two vertical supports front ends respectively and be connected between two vertical supports and It is easy for the yoke frame of pushing tow jack support top, actual installation.In addition, longitudinal pushing reaction frame is with the pre-buried base of bottom plate and just Property support structure (such as rigid supporting rod, rigid backbone) between connect it is easy, reliable；Also, will by front side junction steel plate Longitudinal pushing reaction frame is locked with rigid support construction.Longitudinal pushing reaction frame occupation mode is flexible, energy simplicity, It is quick to carry out vertical bridge to pushing tow.Meanwhile longitudinal pushing reaction frame is anti-with forming oblique pushing tow after the assembling of oblique pushing tow link Power frame, it easy, quick can change pushing tow direction, energy is easy, quickly carries out oblique pushing tow to cantilever beam section, the oblique pushing tow connection Frame is simple in construction, reasonable in design and processing and fabricating and dismounting are easy, and using effect is good.

5th, used longitudinal pushing reaction frame and oblique pushing reaction frame use end pushing tow mode, easy for construction fast Victory, scene only need to carry out bolt connection, and scene need not weld, and construction speed is fast, not influence other process progresses.And And the construction standard of longitudinal pushing reaction frame and oblique pushing reaction frame, the pushing end of rigid support construction and fixing end institute Longitudinal pushing reaction frame of installation and the structure all same of oblique pushing reaction frame, are not easy to get wrong, and practical operation is easy.Also, During practice of construction, pushing tow and locking can be carried out at the both ends of rigid support construction, the error transfer factor being easy in construction.In addition, Used longitudinal pushing reaction frame and the dismounting of oblique pushing reaction frame are convenient and swift, and repeat and utilize after removing, and repeat sharp With rate height；And the center of gravity of longitudinal pushing reaction frame and oblique pushing reaction frame is low, can effectively reduce additional during pushing tow Moment of flexure.Thus, used longitudinal pushing reaction frame and oblique pushing reaction frame using effect is good and practical value is high, fastening peace On the pre-buried base of bottom 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 bottom plate, pushing reaction frame and rigid support construction are locked after the completion of pushing tow.Also, longitudinal pushing tow The vertical bridge that reaction frame is used for closure segment is used for the oblique pushing tow process of closure segment, structure to pushing tow process, oblique pushing reaction frame Simply, reasonable in design and easy construction, using effect are good, and scene need not weld, and dismounting is easy, connection is reliable and reuses Rate is high, and caused additional bending moment is smaller during pushing tow.

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

7th, use construction method step is simple, reasonable in design and easy construction, using effect are good, can be easy, quick complete Construction quality into the work progress of bottom plate pushing tow system, and the bottom 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.

Brief description of the drawings

Fig. 1-1 is use state reference chart when bottom plate pushing tow system of the present invention uses longitudinal pushing reaction frame.

Fig. 1-2 is use state reference chart when bottom plate pushing tow system of the present invention uses oblique pushing reaction frame.

Fig. 1-3 is the layout position illustration of the two pre-buried bases of bottom 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 bottom plate of the present invention.

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

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

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

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

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

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

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

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

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

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

Fig. 7-1 for the presence lateral deviation of institute's pushing tow of the present invention cantilever beam section structural representation.

Fig. 7-2 for the presence torsional deflection of institute's pushing tow of the present invention cantilever beam section structural representation.

Description of reference numerals:

1-1-right angle steel plate；1-1-1-front side steel plate；1-1-2-inner side steel plate；

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

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

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

The pre-buried base in 3-left side；The pre-buried base in 4-right side；5-rigid support constructs；

5-1-lower supporting steel plate；The channel-section steels of 5-2-1-first；5-2-2-support angle steel；

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

5-3-1-connecting bolt mounting hole；6-pushing tow jack；7-longitudinal pushing reaction frame；

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

7-4-rear side junction steel plate；7-4-1-rear side bolt mounting hole；

7-5-front side junction steel plate；7-5-1-front side bolt mounting hole；

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

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

The bolt mounting holes of 7-6-5-second；The bolt mounting holes of 7-6-6-first.

Embodiment

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

Rigid support construction 5 is longitudinal pushing tow with support structure or oblique pushing tow support structure；The longitudinal direction top Push away to be propped up respectively with the both ends of support structure and peak on the pre-buried base 3 in the left side in the pre-buried base of bottom plate described in two groups or described in two groups On the pre-buried base 4 in right side in the pre-buried base of bottom plate, the oblique pushing tow withstands on bottom described in one group with one end branch of support structure On the pre-buried base 3 in left side in the pre-buried base of plate and right side that its other end branch is withstood in the pre-buried base of bottom plate described in another group is pre- On buried end seat 4；

One end of the rigid support construction 5 is fixing end and its other end is pushing end, the institute of the fixing end support top It is fixed wing base to state the pre-buried base of bottom plate, and the pre-buried base of the bottom plate of the pushing end support top is pushing tow wing base；

The top-pushing mechanism is laid between the pushing end and the pushing tow wing base of rigid support construction 5；It is described Top-pushing mechanism is pushing tow jack 6, and the rear portion branch of pushing tow jack 6 is withstood on the pushing tow wing base, and pushing tow jack 6 Front portion branch is withstood in the pushing end of rigid support construction 5；The rigid support of the pushing tow jack 6 and its pushing tow constructs 5 lay on the same line.

During actual laying installation, the pre-buried base of bottom plate length direction of cantilever beam section 2 residing for is laid.

In the present embodiment, the structure all same of four pre-buried bases of bottom plate in the pre-buried base of bottom plate described in two groups；Often Two pre-buried bases of bottom plate in the group pre-buried base of bottom plate are laid in symmetrical.

As shown in Fig. 2-1, Fig. 2-2, the pre-buried base of bottom plate include being laid in right angle steel plate 1-1 in cantilever beam section 2, Concrete cast-in-situ block 1-3 and multiple tracks positioned at right angle steel plate 1-1 sides are poured in the vertical shearing resistance in concrete cast-in-situ block 1-3 Reinforcing bar 1-2, vertical shear reinforcement 1-2 described in multiple tracks is in vertically to laying；The concrete cast-in-situ block 1-3 and cantilever beam section 2 Pour and be integrated, the right angle steel plate 1-1 is laid on the corner between the bottom plate 2-1 of cantilever beam section 2 and web 2-2；It is described Right angle steel plate 1-1 is by the front side steel plate 1-1-1 on front side of concrete cast-in-situ block 1-3 and on the inside of concrete cast-in-situ block 1-3 Inner side steel plate 1-1-2 be formed by connecting, the front side steel plate 1-1-1 and inner side steel plate 1-1-2 in vertically to lay and the two Bottom be embedded in bottom plate 2-1, the front side steel plate 1-1-1 is laid along direction across bridge, and the inner side steel plate 1-1-2 is along vertical Bridge is to being laid；Vertical shear reinforcement 1-2 lower end is embedded in bottom plate 2-1 described in multiple tracks；Vertical shearing resistance steel described in multiple tracks 1-2 points of multiple rows of multiple rows of muscle are laid, positioned at most vertical shearing resistance described in a row of front side in multiple rows of vertical shear reinforcement 1-2 Reinforcing bar 1-2 is weldingly fixed on front side steel plate 1-1-1 madial wall, positioned at most interior in vertical shear reinforcement 1-2 described in multiple row The a row vertical shear reinforcement 1-2 of side is weldingly fixed on inner side steel plate 1-1-2 madial wall.

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

In the present embodiment, the front side wall of the concrete cast-in-situ block 1-3 is close to front side steel plate 1-1-1 madial wall and it Madial wall is close to inner side steel plate 1-1-2 side wall, and the 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 molded, the inner side steel plate 1-1-2 are that concrete cast-in-situ block 1-3 lateral wall is molded Outside forming panel.

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

During actual processing, the right angle steel plate 1-1 is formed by an elongate steel plate bending, the right angle steel plate 1-1's Thickness of slab is 8mm~12mm.

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

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

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

With reference to Fig. 2-1 and Fig. 2-2, the reinforced bar support skeleton includes multiple horizontal mesh reinforcements from top to bottom laid, more The structure all same of the individual horizontal mesh reinforcement, skeleton fixed steel bars fastening described in each horizontal mesh reinforcement Jun Yuge roads connect It is connected in one；Each horizontal mesh reinforcement includes the longitudinal reinforcement 1-6 and multiple tracks cloth that multiple tracks is laid in same level The vertical bridge of transverse steel 1-7 in same level, the longitudinal reinforcement 1-6 along continuous rigid frame bridge of constructing is to progress cloth If direction across bridge of the transverse steel 1-7 along continuous rigid frame bridge of constructing is laid；In the horizontal mesh reinforcement described in per pass Longitudinal reinforcement 1-6 is 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 The junction for stating transverse steel 1-7 is provided with the skeleton fixed steel bars together.

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

In the present embodiment, the diameter of the longitudinal reinforcement 1-6 and transverse steel 1-7 are Φ 12mm., can during practice of construction According to specific needs, longitudinal reinforcement 1-6 and transverse steel 1-7 diameter are adjusted accordingly.During actual use, the reinforcing bar Support frame plays a part of the vertical shear reinforcement 1-2 of support and as distributing bar in concrete cast-in-situ block 1-3.

During practice of construction, a diameter of Φ 12mm~Φ 20mm of the vertical shear reinforcement 1-2, the vertical shear reinforcement Depth in 1-2 embedments bottom plate 2-1 be located at for 18cm~22cm and its upper end concrete cast-in-situ block 1-3 top surface lower section 2cm~ 3cm opening positions.

In the present embodiment, a diameter of Φ 16mm of the vertical shear reinforcement 1-2, the vertical shear reinforcement 1-2 embedments Depth in bottom plate 2-1 is 20cm., can according to specific needs, to vertical shear reinforcement 1-2 diameter and vertical during practice of construction Depth in shear reinforcement 1-2 embedment bottom plates 2-1 adjusts accordingly.

In the present embodiment, multiple longitudinal pre-embedded bolt 1-8 are housed on the front side steel plate 1-1-1, multiple longitudinal directions are pre- Bolt 1-8 is buried along the vertical bridge for continuous rigid frame bridge of constructing to being laid, multiple difference are provided with the front side steel plate 1-1-1 For the bolt mounting holes of longitudinal pre-embedded bolt 1-8 installations；Each longitudinal pre-embedded bolt 1-8 rear portion is poured in concrete In cast-in-place piece of 1-3, each longitudinal pre-embedded bolt 1-8 front portion is extend out on front side of the steel plate 1-1-1 of front side.

During actual use, multiple longitudinal pre-embedded bolt 1-8 effect 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 longitudinal pre-embedded bolt 1-8 is 2, and longitudinal pre-embedded bolt 1-8's is a diameter of Φ 16mm~Φ 20mm.

, can according to specific needs during practice of construction, quantity and diameter to longitudinal pre-embedded bolt 1-8 are accordingly adjusted respectively It is whole.

In the present embodiment, multiple horizontal pre-embedded bolt 1-9 are housed on the inner side steel plate 1-1-2, multiple transverse directions are pre- Bolt 1-9 is buried along the vertical bridge for continuous rigid frame bridge of constructing to being laid, multiple difference are provided with the inner side steel plate 1-1-2 For the bolt mounting holes of horizontal pre-embedded bolt 1-9 installations；Each horizontal pre-embedded bolt 1-9 rear portion is poured in concrete In cast-in-place piece of 1-3, each horizontal pre-embedded bolt 1-9 front portion is extend out on the inside of the steel plate 1-1-2 of inner side.

During actual use, multiple horizontal pre-embedded bolt 1-9 effect is to connect oblique on the inside of right angle steel plate 1-1 Pushing reaction frame.

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

, can according to specific needs during practice of construction, quantity and diameter to horizontal pre-embedded bolt 1-9 are accordingly adjusted respectively It is whole.

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

Also, it is attached between the Interal fixation reinforcing bar and right angle steel plate 1-1 in a manner of spot welding.

During actual use, the quantity of longitudinal pushing tow support structure is two, longitudinal pushing tow support The both ends of construction are propped up respectively to be peaked between the pre-buried base 3 in the left side in the pre-buried base of bottom plate described in two groups, another described longitudinal direction Pushing tow is propped up respectively with the both ends of support structure to be peaked between the pre-buried base 4 in the right side in the pre-buried base of bottom plate described in two groups, is referred to Fig. 1-1；The quantity of the oblique pushing tow support structure is one, refers to Fig. 1-2.

During actual use, when longitudinal pushing tow support structure is longitudinal pushing tow support structure, using this Invent the bottom plate pushing tow system and longitudinal pushing tow (indulging bridge to promotion) is carried out to cantilever beam section 2；When longitudinal pushing tow branch When support is configured to the oblique pushing tow support structure, cantilever beam section 2 is carried out tiltedly using bottom plate pushing tow system of the present invention To pushing tow.

Also, it is installed with pushing reaction frame, the pushing tow on the fixed wing base and the pushing tow wing base Reaction frame is longitudinal pushing reaction frame 7 and/or oblique pushing reaction frame；

Longitudinal pushing tow is propped up with the both ends of support structure and withstood on longitudinal pushing reaction frame 7, and the oblique pushing tow is used The both ends of support structure, which are propped up, to be withstood on oblique pushing reaction frame.

As shown in Fig. 4-1, Fig. 4-2 and Fig. 4-3, the rigid support construction 5 includes lower supporting steel plate 5-1, is laid in down Rigid strutting piece and two end steel plate 5-3 for being laid in lower supporting steel plate 5-1 rear and front ends respectively on supporting steel plate 5-1, The lower supporting steel plate 5-1 and rigid strutting piece is laid along the pushing tow direction of cantilever beam section 2 and the length of the two It is identical；The lower supporting steel plate 5-1 is rectangular steel plates, the rigid strutting piece be located at lower supporting steel plate 5-1 surface and its Width is less than lower supporting steel plate 5-1 width；Two end steel plate 5-3 enter along lower supporting steel plate 5-1 width Row is laid and both at vertical steel plate；The rear and front end of the lower supporting steel plate 5-1 is separately fixed at two end steel On plate 5-3, and the rear and front end of the rigid strutting piece is separately fixed on two end steel plate 5-3；The rigidity branch Support member is weldingly fixed on lower supporting steel plate 5-1, and the rigid strutting piece is the first support member, the second support member or the 3rd support Part, first support member are a first channel-section steel 5-2-1 tipped upside down on lower supporting steel plate 5-1, second support member by Two support angle steel 5-2-2 compositions symmetrically laid, the 3rd support member is by the vertical steel plate 2-3 symmetrically laid of left and right two With the upper supporting steel plate 2-4 compositions being supported on two vertical steel plate 2-3；Before and after the left side of the lower supporting steel plate 5-1 Both ends are provided with two before and after multiple left side bolt mounting holes 5-1-1 for the installation of multiple left side fixing bolts respectively and its right side End is provided with multiple respectively for the right side bolt mounting holes 5-1-2 of multiple right side fixing bolts installation, multiple left side spiral shells Bolt mounting hole 5-1-1 and multiple right side bolt mounting holes 5-1-2 along lower supporting steel plate 5-1 length direction from front to back Laid；The lower supporting steel plate 5-1 is locked by multiple left side fixing bolts and multiple right side fixing bolts It is fixed in the cantilever beam section of constructed continuous rigid frame bridge；It is provided with left and right sides of two end steel plate 5-3 for connecting The connecting bolt mounting hole 5-3-1 of connecting bolt installation.

, can be according to being actually needed during actual use, installation is in vertically to the vertical of laying on the pre-buried base of the bottom plate Fixing bolt, the left side fixing bolt and right side fixing bolt are the vertical fixing bolt.After the completion of pushing tow, pass through institute Left side fixing bolt and right side fixing bolt is stated to be locked the end of rigid support construction 5 with the pre-buried base of the bottom plate, It is safe and reliable to ensure, rigid support construction 5 will not occur and the accident such as shift, fall.

In the present embodiment, the connecting bolt mounting hole 5-3-1 is circle.

During actual use, the end steel plate 5-3 is rectangular steel plates or isosceles trapezoid steel plate.

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

In the present embodiment, two end steel plate 5-3 structure snd size all same.

During actual processing, with welding between the end steel plate 5-3 and lower supporting steel plate 5-1 and the rigid strutting piece Mode is fixedly connected.

In the present embodiment, multiple left side bolt mounting holes 5-1-1 and multiple right side bolt mounting holes 5-1-2 are in It is symmetrical to lay；Multiple left side bolt mounting holes 5-1-1 are respectively positioned on the left of the rigid strutting piece, multiple right side bolts Mounting hole 5-1-2 is respectively positioned on the right side of the rigid strutting piece.

Also, multiple left side bolt mounting holes 5-1-1 and multiple right side bolt mounting holes 5-1-2 are in uniform Lay.

The left side bolt mounting holes 5-1-1 and right side bolt mounting holes 5-1-2 is that unthreaded hole (is not provided with internal thread Hole), the left side bolt mounting holes 5-1-1 and right side bolt mounting holes 5-1-2 aperture are all higher than the straight of the vertical bolt Footpath, it is easy to carry out error transfer factor to position of the present utility model.In the present embodiment, the left side bolt mounting holes 5-1-1 and the right side Side bolt mounting holes 5-1-2 aperture is slightly larger than the bolt shank diameter of the vertical bolt.

In the present embodiment, multiple connecting bolt installations are provided with left and right sides of two end steel plate 5-3 Hole 5-3-1, multiple connecting bolt mounting hole 5-3-1 are laid from left to right；Institute on the left of each end steel plate 5-3 The connecting bolt mounting hole 5-3-1 of setting is left side connecting hole, and the left side connecting hole is located on the left of the rigid strutting piece； Connecting bolt mounting hole 5-3-1 set by the right side of each end steel plate 5-3 is right side connecting hole, the right side connection Hole position is on the right side of the rigid strutting piece.

Also, multiple left side connecting holes are laid with multiple right side connecting holes in symmetrical.

In the present embodiment, two connecting bolt installations are provided with left and right sides of each end steel plate 5-3 The quantity of the left side connecting hole and the right side connecting hole is two on hole 5-3-1, each end steel plate 5-3.Two The individual left side connecting hole is respectively that the first left side connecting hole and the second left side on the right side of the connecting hole of first left side connect Hole is connect, second left side connecting hole is located above the connecting hole of first left side.

During actual processing, the wide b=200mm~300mm of height h=100mm~150mm, leg of the first channel-section steel 5-2-1 And its waist thickness d=10mm~16mm.

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

During actual processing, can according to specific needs, the wide b's of height h, leg and its waist thickness d to the first channel-section steel 5-2-1 Size adjusts accordingly respectively.

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

In the present embodiment, the connecting bolt is in horizontal layout, and bridge is indulged to laying in connecting bolt edge.The company Connecting bolt mounting hole 5-3-1 aperture is slightly larger than the bolt shank diameter of the connecting bolt.

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

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

For ease of carrying out error transfer factor during recycling and pushing tow, to left side bolt mounting holes 5-1-1 and right side spiral shell Length of the bolt mounting hole 5-1-2 on pushing tow direction is suitably increased, thus left side bolt mounting holes 5-1-1 and right side bolt Mounting hole 5-1-2 is slotted hole.

In the present embodiment, longitudinal pushing reaction frame is installed with the fixed wing base and the pushing tow wing base 7。

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

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

During actual processing, the horizontal steel plate 7-1, longitudinal steel plate 7-2, rear side junction steel plate 7-4 and front side junction steel plate 7-5 thickness of slab is 10mm~15mm.

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

Two front side junction steel plate 7-5 madial wall, which is respectively welded, is fixed on longitudinal direction in two vertical supports On steel plate 7-2 lateral wall, two front side junction steel plate 7-5 bottoms are respectively welded and are fixed on two vertical supports In horizontal steel plate 7-1 on.

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

During actual use, the effect of the rear side junction steel plate 7-4 is described with being to be connected to the pre-buried base of the bottom plate The pre-buried base pre-plugged of bottom plate is on the bottom plate 2-1 of cantilever beam section 2, and rear side junction steel plate 7-4 and the bottom plate are pre-buried It is attached between base by bolt (being specifically multiple longitudinal pre-embedded bolt 1-8).

In the present embodiment, two front side junction steel plate 7-5 effects are to connect with the rigid support of pushing tow construction 5 Connect.

In the present embodiment, the quantity that front side bolt mounting hole 7-5-1 is opened on each front side junction steel plate 7-5 is One, front side bolt mounting hole 7-5-1 is opened on two front side junction steel plate 7-5 and is laid in same level.It is described Front side bolt mounting hole 7-5-1 is the mounting hole for connecting bolt installation.

During practice of construction, first longitudinal pushing reaction frame 7 is processed in processing factory.Before pushing tow, first in the company of construction A pre-buried pre-buried base of bottom plate, and on the pre-buried base of the bottom plate respectively in two cantilever beam sections 2 of continuous rigid frame bridge Longitudinal pushing reaction frame 7 is fixedly mounted respectively；Top is installed between the pre-buried base of the bottom plate of two cantilever beam sections 2 again The rigid support construction 5 pushed away；Afterwards, pushing tow jack 6 is installed, the rear end branch of the pushing tow jack 6 withstands on top In push piece 7-3 and its front end branch withstands on the rigid support construction；Finally, pushing tow is carried out using the pushing tow jack 6.

The fixing end of the rigid support construction 5 passes through longitudinal direction of multiple bolts directly with being installed on the fixed wing base Pushing reaction frame 7 is locked.When being installed to the pushing tow jack 6, the front end support top of the pushing tow jack 6 The longitudinal pushing reaction frame 7 installed on the pushing tow wing base is supported in in the pushing end of rigid support construction 5 and its rear end Upper (being specifically on the yoke frame 7-3).After the completion of pushing tow, by multiple bolts by rigid support construction 5 pushing end and institute The longitudinal pushing reaction frame 7 installed on pushing tow wing base is stated to be locked.

Before longitudinal pushing tow, the fixing end of rigid support construction 5 by multiple connecting bolts, directly with it is described The longitudinal pushing reaction frame 7 (being specifically front side junction steel plate 7-5) installed on fixed wing base is locked；And by more Longitudinal pushing reaction frame 7 that the individual connecting bolt will be installed on the pushing end of rigid support construction 5 and the pushing tow wing base (being specifically front side junction steel plate 7-5) is locked.When being installed to pushing tow jack 6, the pushing tow jack 6 Front end branch peaks in the pushing end of the rigid support construction 5 and its rear end is supported in the longitudinal direction installed on the pushing tow wing base On pushing reaction frame 7 (being specifically on yoke frame 7-3).It should be noted that：When being locked, it is impossible to be locked, need pre- completely Pushing tow displacement is stayed, i.e., reserves certain activity space between rigid support construction 5 and longitudinal pushing reaction frame 7.

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

With reference to Fig. 3-3, the 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 the inside front and outer side connecting plate 7-6-3 for being fixed on top on the outside of horizonal base plate 7-6-1, it is described It is attached between connection plate inside 7-6-2 and outer side connecting plate 7-6-3 by multiple junction steel plate 7-6-4, the connection steel Plate 7-6-4 is fixed on horizonal base plate 7-6-1；The connection plate inside 7-6-2, outer side connecting plate 7-6-3 and junction steel plate 7- 6-4 is in vertically to laying；Between connection plate inside 7-6-2 and rear side the junction steel plate 7-4 spiral shell is connected by multiple steel plates Bolt is attached, and the first bolt mounting holes 7- for steel plate connecting bolt installation is provided with the connection plate inside 7-6-2 6-6；The second bolt mounting holes 7-6-5 is provided with the outer side connecting plate 7-6-3；

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

During actual processing, the horizonal base plate 7-6-1, connection plate inside 7-6-2 and outer side connecting plate 7-6-3 are straight The steel plate and thickness of slab of three is 10mm~15mm.

In the present embodiment, the horizonal base plate 7-6-1 and connection plate inside 7-6-2, outer side connecting plate 7-6-3 and steel is connected With welding side 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 the first bolt mounting holes 7-6-6 is two, two first bolt mounting holes 7-6-6 is laid in same level；The quantity of the second bolt mounting holes 7-6-5 is multiple, multiple second spiral shells Bolt mounting hole 7-6-5 is laid in same level.

During actual use, the effect of the oblique pushing tow link 7-6 is to be adjusted pushing tow direction.The outside Connecting plate 7-6-3 effect is to connect the pre-buried base of the bottom plate, is connected to particular by horizontal pre-embedded bolt 1-9 described On the pre-buried base of bottom plate.

As shown in the above, longitudinal pushing reaction frame 7 is fixedly mounted on the bottom by longitudinal pre-embedded bolt 1-8 On the pre-buried base of plate, and longitudinal pushing reaction frame 7 is located on front side of the pre-buried base of the bottom plate；The oblique pushing reaction frame 7 is logical Cross horizontal pre-embedded bolt 1-9 to be fixedly mounted on the pre-buried base of the bottom plate, the oblique pushing reaction frame 7 is located at the bottom plate On the inside of pre-buried base.

Before oblique pushing tow, the fixing end of rigid support construction 5 by multiple connecting bolts, directly with it is described The oblique pushing reaction frame (being specifically front side junction steel plate 7-5) installed on fixed wing base is locked；And by more The oblique pushing reaction frame that the individual connecting bolt will be installed on the pushing end of rigid support construction 5 and the pushing tow wing base (being specifically front side junction steel plate 7-5) is locked.When being installed to pushing tow jack 6, the pushing tow jack 6 Front end branch is peaked in the pushing end of rigid support construction 5 and its rear end be supported on the pushing tow wing base install it is oblique On pushing reaction frame (being specifically on yoke frame 7-3).It should be noted that：When being locked, it is impossible to be locked, need to reserve completely Pushing tow displacement, i.e., reserve certain activity space between rigid support construction 5 and oblique pushing reaction frame.

Thus during actual installation, by the both ends of rigid support construction 5 respectively in two cantilever beam sections 2 described in Between pushing reaction frame, and the both ends of rigid support construction 5 are respectively with being fixedly mounted on two pre-buried bases of bottom plate The pushing reaction frame connection.

During actual use, the rear side bolt mounting hole that is opened up in longitudinal pushing reaction frame 7 on rear side junction steel plate 7-4 7-4-1 is the bolt mounting holes for the installation of longitudinal pre-embedded bolt 1-8 or described steel plates connecting bolt；

The front side bolt mounting hole 7-5-1 opened up on the front side junction steel plate 7-5 is for connecting bolt installation Bolt mounting holes；

It is for horizontal pre-embedded bolt 1-9 installations that the second bolt mounting holes 7-6-5 is opened up on the outer side connecting plate 7-6-3 Bolt mounting holes.

A kind of construction method of continuous rigid frame bridge closure segment pushing tow bottom plate pushing tow system as shown in Figure 5, including it is following Step：

Step 1: the pre-buried base construction of bottom plate：When being constructed to two cantilever beam sections 2, in two cantilevers The pre-buried base of bottom plate described in pre-buried one group of the end of beam section 2 difference；

Step 2: top-pushing mechanism is installed：Described in being constructed in step 1 in the pre-buried base of bottom plate described in two groups of completion Pushing tow jack 6 is installed on pushing tow wing base, and the rear portion branch of pushing tow jack 6 is withstood on the pushing tow wing base；

Step 3: rigid support construction installation：Rigid support construction 5 is installed, makes one end of rigid support construction 5 Branch is withstood on the fixed wing base, and the other end branch of rigid support construction 5 is peaked at pushing tow wing base described in step 2 On, and the rigid support construction 5 of pushing tow jack 6 and its pushing tow is laid on the same line.

In the present embodiment, when carrying out pre-buried to the pre-buried base of bottom plate described in two groups in step 1, bottom plate described in two groups is pre-buried The built-in process of base is identical；

When carrying out pre-buried to the pre-buried base of bottom plate described in any group, process is as follows：

To be more before step 101, the cantilever beam section 2 pre-buried to the pre-buried base of this group of bottom plate carry out concrete pouring construction Framework of steel reinforcement of the vertical shear reinforcement 1-2 bottoms with being set in bottom plate 2-1, which is fastenedly connected, described in road is integrated；

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

Step 103, vertical shear reinforcement 1-2 described in the reinforced bar support skeleton and multiple tracks connected as one；

Step 104, concrete pouring construction is synchronously carried out to cantilever beam section 2 and concrete cast-in-situ block 1-3, waited poured mixed After coagulating native final set, the pre-buried process of the pre-buried base of this group of bottom plate is completed.

Thus, the bonding strength of the pushing reaction frame and bottom plate 2-1 is very high, and the height of pushing tow point position compared with Low, additional bending moment is smaller.During actual use, the pushing reaction can effectively be strengthened by vertical shear reinforcement 1-2 described in multiple tracks Concrete bonding strength between frame and bottom plate 2-1, improve faying face shearing strength.

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

After the bottom plate pushing tow system installation, first to the vertical central axis line position of two cantilever beam sections 2 Measure respectively, it is described to two outstanding further according to the vertical central axis line position for two cantilever beam sections 2 being pre-designed Lateral deviation amount is determined respectively existing for arm beam section 2；Meanwhile to two cantilever beam sections 2 along longitudinal center axis Windup-degree measures respectively, and according to measurement result to two cantilever beam sections 2 with the presence or absence of reverse and it is existing Torsional deflection amount is determined respectively；

The lateral deviation amount is the vertical central axis line position for the cantilever beam section 2 measured and the cantilever being pre-designed Difference DELTA d between the vertical central axis line position of beam section 2 on direction across bridge, refers to Fig. 7-1；The torsional deflection amount is measurement Windup-degree A of the cantilever beam section 2 gone out along longitudinal center axis, refers to Fig. 7-2.

In actual use, when longitudinal pushing tow support structure is longitudinal pushing tow support structure, adopt Longitudinal pushing tow (indulging bridge to promotion) is carried out to cantilever beam section 2 with bottom plate pushing tow system of the present invention；When longitudinal pushing tow When with support structure being the oblique pushing tow support structure, cantilever beam section 2 is entered using bottom plate pushing tow system of the present invention The oblique pushing tow of row.

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

In actual use, when carrying out longitudinal pushing tow to two cantilever beam sections 2, longitudinal pushing tow support structure Make as longitudinal pushing tow support structure, refer to Fig. 1-1, now described lower supporting steel plate 5-1 is along vertical bridge to being laid.

Embodiment 2

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

In the present embodiment, use the remainder structure of bottom plate pushing tow system and annexation same as Example 1.

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

Embodiment 3

As shown in fig. 7, in the present embodiment, as different from Example 1：The rigid strutting piece is the 3rd support member, institute The 3rd support member is stated by the vertical steel plate 5-2-3 symmetrically laid of left and right two and is supported on two vertical steel plate 5-2-3 Upper supporting steel plate 5-2-4 composition.Also, two vertical steel plate 5-2-3 are weldingly fixed on lower supporting steel plate 5-1. The upper supporting steel plate 5-2-4 is rectangular steel plates and its size is identical with lower supporting steel plate 5-1 size, the upper supporting steel plate It is fixedly connected between 5-2-4 and two vertical steel plate 5-2-3 with welding manner.

In the present embodiment, use the remainder structure of bottom plate pushing tow system and annexation same as Example 1.

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

It is described above, only it is presently preferred embodiments of the present invention, not the present invention is imposed any restrictions, it is every according to the present invention Any simple modification, change and the equivalent structure change that technical spirit is made to above example, still fall within skill of the present invention In the protection domain of art scheme.

Claims (7)

1. A kind of 1. continuous rigid frame bridge closure segment pushing tow bottom plate pushing tow system, it is characterised in that：Institute is laid in respectively including two groups The pre-buried base of bottom plate of two cantilever beam section (2) ends of construction continuous rigid frame bridge, it is supported in the pre-buried base of bottom plate described in two groups Between rigid support construction (5) and the top-pushing mechanism of pushing tow is carried out to rigid support construction (5), the cantilever beam section (2) is In Reinforced Concrete Box Girder, the girder closure segment for continuous rigid frame bridge of constructing are to be connected between two cantilever beam sections (2) Closure segment；The pre-buried base of bottom plate described in every group includes two bottom plates being laid on the same cantilever beam section (2) Pre-buried base, two pre-buried bases of bottom plate are respectively to be laid at left and right sides of bottom plate (2-1) top of cantilever beam section (2) The pre-buried base of the pre-buried base in left side (3) and right side (4), the pre-buried base in left side (3) and the pre-buried base in right side (4) are respectively positioned on outstanding Between the left and right sides web (2-2) of arm beam section (2)；

   Rigid support construction (5) is longitudinal pushing tow with support structure or oblique pushing tow support structure；Longitudinal pushing tow Propped up and peaked on the pre-buried base in left side (3) in the pre-buried base of bottom plate described in two groups or described in two groups respectively with the both ends of support structure On the pre-buried base in right side (4) in the pre-buried base of bottom plate, the oblique pushing tow is withstood on described in one group with one end branch of support structure On the pre-buried base in left side (3) in the pre-buried base of the bottom plate and right side that its other end branch is withstood in the pre-buried base of bottom plate described in another group On the pre-buried base in side (4)；

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

   The top-pushing mechanism is laid between the pushing end and the pushing tow wing base of rigid support construction (5)；The top Pushing mechanism is pushing tow jack (6), and pushing tow jack (6) rear portion branch is withstood on the pushing tow wing base, and pushing tow is very heavy The anterior branch in top (6) is withstood in the pushing end of rigid support construction (5)；The pushing tow jack (6) is firm with its pushing tow Property support structure (5) lay on the same line

   The structure all same of four pre-buried bases of bottom plate in the pre-buried base of bottom plate described in two groups；The pre- buried end of bottom plate described in every group Two pre-buried bases of bottom plate in seat are laid in symmetrical；

   The rigid support construction (5) includes lower supporting steel plate (5-1), the rigid support being laid on lower supporting steel plate (5-1) Part and two end steel plates (5-3) for being laid in lower supporting steel plate (5-1) rear and front end respectively, the lower supporting steel plate (5-1) Laid with the rigid strutting piece along the pushing tow direction of cantilever beam section (2) and the length of the two is identical；The lower support Steel plate (5-1) is rectangular steel plates, and the rigid strutting piece is located at the surface of lower supporting steel plate (5-1) and its width is less than lower branch Support the width of steel plate (5-1)；Two end steel plates (5-3) are laid along the width of lower supporting steel plate (5-1) And both at vertical steel plate；The rear and front end of the lower supporting steel plate (5-1) is separately fixed at two end steel plate (5- 3) on, and the rear and front end of the rigid strutting piece is separately fixed on two end steel plates (5-3)；The rigid support Part is weldingly fixed on lower supporting steel plate (5-1), and the rigid strutting piece is the first support member, the second support member or the 3rd support Part, first support member are first channel-section steel (5-2-1) tipped upside down on lower supporting steel plate (5-1), second support Part is made up of two support angle steels symmetrically laid (5-2-2), and the 3rd support member is symmetrically laid vertical by left and right two Steel plate (5-2-3) and upper supporting steel plate (5-2-4) composition being supported on two vertical steel plates (5-2-3)；The lower branch The left side rear and front end of support steel plate (5-1) is provided with multiple respectively for the left side bolt installation of multiple left side fixing bolts installation Hole (5-1-1) and its right side rear and front end are provided with multiple respectively for the right side bolt installation of multiple right side fixing bolts installation Hole (5-1-2), multiple left side bolt mounting holes (5-1-1) and multiple right side bolt mounting holes (5-1-2) are under The length direction of supporting steel plate (5-1) is laid from front to back；The lower supporting steel plate (5-1) is consolidated by multiple left sides Determine bolt and multiple right side fixing bolts are locked in the cantilever beam section of constructed continuous rigid frame bridge；Two ends The connecting bolt mounting hole (5-3-1) for connecting bolt installation is provided with left and right sides of portion's steel plate (5-3)；

   The pre-buried base of bottom plate includes being laid in right angle steel plate (1-1) in cantilever beam section (2), positioned at right angle steel plate (1-1) The concrete cast-in-situ block (1-3) and multiple tracks of side are poured in the vertical shear reinforcement (1-2) in concrete cast-in-situ block (1-3), Vertical shear reinforcement (1-2) described in multiple tracks is in vertically to laying；The concrete cast-in-situ block (1-3) is poured with cantilever beam section (2) Build and be integrated, the right angle steel plate (1-1) is laid in the corner between the bottom plate (2-1) of cantilever beam section (2) and web (2-2) On；The right angle steel plate (1-1) is by the front side steel plate (1-1-1) on front side of concrete cast-in-situ block (1-3) and positioned at concrete Inner side steel plate (1-1-2) on the inside of cast-in-place piece (1-3) is formed by connecting, the front side steel plate (1-1-1) and inner side steel plate (1-1-2) In being embedded in bottom plate (2-1) to laying and the bottom of the two vertically, the front side steel plate (1-1-1) carries out cloth along direction across bridge If the inner side steel plate (1-1-2) is along vertical bridge to being laid；The lower end of vertical shear reinforcement (1-2) is embedded to described in multiple tracks In bottom plate (2-1)；The multiple rows of multiple row of vertical shear reinforcement (1-2) described in multiple tracks point is laid, multiple rows of vertical shear reinforcement In (1-2) inner side of front side steel plate (1-1-1) is weldingly fixed on positioned at vertical shear reinforcement (1-2) described in a most row of front side On wall, a row vertical shear reinforcement (1-2) in vertical shear reinforcement (1-2) described in multiple row positioned at most inner side welds solid It is scheduled on the madial wall of inner side steel plate (1-1-2).
2. 2. according to a kind of continuous rigid frame bridge closure segment pushing tow bottom plate pushing tow system described in claim 1, it is characterised in that：Institute The quantity for stating longitudinal pushing tow support structure is two, and longitudinal pushing tow is propped up and peaks at two respectively with the both ends of support structure Between the pre-buried base in left side (3) in the group pre-buried base of bottom plate, the both ends of another longitudinal pushing tow support structure Branch is peaked between the pre-buried base in right side (4) in the pre-buried base of bottom plate described in two groups respectively；

   The quantity of the oblique pushing tow support structure is one.
3. 3. according to a kind of continuous rigid frame bridge closure segment pushing tow bottom plate pushing tow system described in claim 1, it is characterised in that：Institute State and pushing reaction frame is installed with fixed wing base and the pushing tow wing base, the pushing reaction frame is longitudinal pushing tow Reaction frame (7) and/or oblique pushing reaction frame；

   Longitudinal pushing tow is propped up with the both ends of support structure to be withstood on longitudinal pushing reaction frame (7), the oblique pushing tow branch The both ends of support construction, which are propped up, to be withstood on the oblique pushing reaction frame.
4. 4. according to a kind of continuous rigid frame bridge closure segment pushing tow bottom plate pushing tow system described in claim 3, it is characterised in that：Institute Stating longitudinal pushing reaction frame (7) includes two vertical supports symmetrically laid in left and right, after two vertical supports The rear side junction steel plate (7-4) of side, two front side junction steel plates (7-5) for being laid in two vertical supports front ends respectively And it is connected between two vertical supports and is connected for the yoke frame (7-3) of pushing tow jack (6) support top, the rear side Steel plate (7-4) is fastenedly connected with the pre-buried base of the bottom plate in cantilever beam section (2)；After two vertical supports End is each attached on the front side wall of rear side junction steel plate (7-4), before the yoke frame (7-3) is located at rear side junction steel plate (7-4) Side, the yoke frame (7-3) is channel-section steel and side wall is fixed on the front side wall of rear side junction steel plate (7-4) thereafter；The rear side Multiple rear side bolt mounting holes (7-4-1) are provided with junction steel plate (7-4), are opened on each front side junction steel plate (7-5) There is front side bolt mounting hole (7-5-1)；Two vertical supports in parallel laying and the two be laid in same level, The rear side junction steel plate (7-4) and two front side junction steel plates (7-5) in vertically to lay and three with it is described The perpendicular laying of vertical supports, two front side junction steel plates (7-5) are laid on same vertical plane；The yoke frame The left and right sidewall of (7-3) is separately fixed on two vertical supports；The vertical supports are for 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 longitudinal steel plate (7-2) is in vertical To laying；The rear side junction steel plate (7-4) is connected with the pre-buried base of the bottom plate.
5. 5. according to a kind of continuous rigid frame bridge closure segment pushing tow bottom plate pushing tow system described in claim 4, it is characterised in that：Institute Oblique pushing reaction frame is stated to be formed by connecting by longitudinal pushing reaction frame (7) and oblique pushing tow link (7-6)；

   The 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 the outer side connecting plate (7-6-3) of top on the outside of horizonal base plate (7-6-1), it is described in It is attached between side connecting plate (7-6-2) and outer side connecting plate (7-6-3) by multiple junction steel plates (7-6-4), the company Steel plate (7-6-4) is connect to be fixed on horizonal base plate (7-6-1)；The connection plate inside (7-6-2), outer side connecting plate (7-6-3) It is in vertically to laying with junction steel plate (7-6-4)；Between the connection plate inside (7-6-2) and rear side junction steel plate (7-4) It is attached by multiple steel plate connecting bolts, is provided with the connection plate inside (7-6-2) and pacifies for the steel plate connecting bolt The first bolt mounting holes (7-6-6) of dress；The second bolt mounting holes (7-6-5) are provided with the outer side connecting plate (7-6-3)；

   The outer side connecting plate (7-6-3) is fastenedly connected with the pre-buried base of the bottom plate, the connection plate inside (7-6-2) It is in parallel laying with rear side junction steel plate (7-4)；Rear side junction steel plate (7-4) in the oblique pushing reaction frame is by oblique Pushing tow link (7-6) is connected with the pre-buried base of the bottom plate.
6. A kind of 6. method constructed to bottom plate pushing tow system as claimed in claim 1, it is characterised in that：This method include with Lower step：

   Step 1: the pre-buried base construction of bottom plate：When being constructed to two cantilever beam sections (2), in two cantilever beams The pre-buried base of bottom plate described in pre-buried one group of section (2) end difference；

   Step 2: top-pushing mechanism is installed：The pushing tow constructed in step 1 in the pre-buried base of bottom plate described in two groups of completion Pushing tow jack (6) is installed on wing base, and pushing tow jack (6) rear portion branch is withstood on the pushing tow wing base；

   Step 3: rigid support construction installation：Rigid support construction (5) is installed, makes one end of rigid support construction (5) Branch is withstood on the fixed wing base, and the other end branch of rigid support construction (5) is peaked at the bottom of pushing tow side described in step 2 On seat, and the rigid support construction (5) of pushing tow jack (6) and its pushing tow is set to lay on the same line.
7. 7. in accordance with the method for claim 6, it is characterised in that：The pre-buried base of bottom plate described in step 1 is outstanding including being laid in Right angle steel plate (1-1) in arm beam section (2), the concrete cast-in-situ block (1-3) positioned at right angle steel plate (1-1) side and multiple tracks are poured Build in the vertical shear reinforcement (1-2) in concrete cast-in-situ block (1-3), vertical shear reinforcement (1-2) is in vertical described in multiple tracks To laying；The concrete cast-in-situ block (1-3) pours with cantilever beam section (2) to be integrated, and the right angle steel plate (1-1) is laid in outstanding On corner between the bottom plate (2-1) and web (2-2) of arm beam section (2)；The right angle steel plate (1-1) is by positioned at concrete cast-in-situ Front side steel plate (1-1-1) on front side of block (1-3) and inner side steel plate (1-1-2) connection on the inside of concrete cast-in-situ block (1-3) Form, the front side steel plate (1-1-1) and inner side steel plate (1-1-2) are in be embedded to bottom plate to laying and the bottom of the two vertically In (2-1), the front side steel plate (1-1-1) is laid along direction across bridge, and the inner side steel plate (1-1-2) is along vertical bridge to carrying out cloth If；The lower end of vertical shear reinforcement (1-2) described in multiple tracks is embedded in bottom plate (2-1)；Vertical shear reinforcement (1-2) described in multiple tracks Multiple rows of multiple row is divided to be laid, positioned at vertical shearing resistance steel described in a most row of front side in multiple rows of vertical shear reinforcement (1-2) Muscle (1-2) is weldingly fixed on the madial wall of front side steel plate (1-1-1), is located in vertical shear reinforcement (1-2) described in multiple row The a row vertical shear reinforcement (1-2) of most inner side is weldingly fixed on the madial wall of inner side steel plate (1-1-2)；

   When carrying out pre-buried to the pre-buried base of bottom plate described in two groups in step 1, the built-in process phase of the pre-buried base of bottom plate described in two groups Together；

   When carrying out pre-buried to the pre-buried base of bottom plate described in any group, process is as follows：

   Before step 101, the cantilever beam section (2) pre-buried to the pre-buried base of this group of bottom plate carry out concrete pouring construction, by multiple tracks Framework of steel reinforcement of described vertical shear reinforcement (1-2) bottom with being set in bottom plate (2-1), which is fastenedly connected, to be integrated；

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

   Step 103, vertical shear reinforcement (1-2) described in the reinforced bar support skeleton and multiple tracks connected as one；

   Step 104, concrete pouring construction is synchronously carried out to cantilever beam section (2) and concrete cast-in-situ block (1-3), waited poured mixed After coagulating native final set, the pre-buried process of the pre-buried base of this group of bottom plate is completed.