CN105839550A - Oppressive traveling mechanism used for cantilever hanging basket and cantilever hanging basket - Google Patents
Oppressive traveling mechanism used for cantilever hanging basket and cantilever hanging basket Download PDFInfo
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- CN105839550A CN105839550A CN201610343976.8A CN201610343976A CN105839550A CN 105839550 A CN105839550 A CN 105839550A CN 201610343976 A CN201610343976 A CN 201610343976A CN 105839550 A CN105839550 A CN 105839550A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/10—Cantilevered erection
- E01D21/105—Balanced cantilevered erection
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Abstract
The invention discloses an oppressive travelling mechanism used for a cantilever hanging basket and the cantilever hanging basket. The oppressive travelling mechanism comprises a rear beam, a counter-force beam and a back pressure wheel device, wherein the rear beam is transversely arranged above the rear part of a main truss longitudinal beam horizontally, and the rear beam is fixedly connected with the main truss longitudinal beam; the counter-force beam is longitudinally arranged at one side of the main truss longitudinal beam horizontally, and is parallel to the main truss longitudinal beam; the front end and the rear end of the counter-force beam are separately anchored on a box beam beam-section through a counter-force beam fixing device; the back pressure wheel device can be sleeved on the counter-force beam in a longitudinal moving manner; the lower part of the back pressure wheel device is in rolling contact with the bottom surface of the counter-force beam; and the upper part of the back pressure wheel device is fixedly arranged on the rear beam. The cantilever hanging basket is provided with three main beam trusses which are the same in structure. The oppressive travelling mechanism can be used for transmitting eccentric moment of force to finish-rolled screw-thread steel in concrete of the box beam beam-section, so that the eccentric moment of force is completely born by the finish-rolled screw-thread steel, and therefore, anchoring force is prevented from being completely concentrated on the longitudinal axis of the a main truss in a travelling state and a working state of the hanging bracket, and the stress structure is more reasonable.
Description
Technical field
The present invention is the auxiliary device about a kind of Hanging Basket cantilever construction, particularly relates to a kind of for cantilever cradle
Compressing walking mechanism and cantilever cradle.
Background technology
Along with the development of modern bridge technology, cross over river, deep valley, road gerber beam bridge increasingly by
Being widely applied, cantilever the continuous beam bridge construction key technology is Hanging Basket.Types of Cradles mainly includes that triangle is hung at present
Basket and Diamond-Shape Form Traveler and the exploration to both Hanging Baskets improve, and the design and construction of Hanging Basket walking mechanism is whole
The key of individual Hanging Basket system construction.The design and construction of any Hanging Basket running gear is all to be front with safety
Carry, for the purpose of to ensure cantilever casting beam construction quality and progress, with cost-effective as additional conditions.
Hanging Basket is one can be suspended on the box beam of stretch-draw anchor along the movable steel structure of track travel, Hanging Basket
In beam section, the model sheetinstallat of box beam beam section during cantilever pouring, reinforcing bar binding, Pipe installing, concrete placings, in advance should
The work such as power stretch-draw, mud jacking are all carried out on Hanging Basket.After the operational procedure of a beam section completes, Hanging Basket releases
Anchoring, shifts to next beam section construction.Hanging Basket needs anchor after releasing before movement, and Hanging Basket is walked on track girder
During for avoiding tilting moment produced by wobbler action, need use compressing walking mechanism Hanging Basket is executed
Add counter-force, it is ensured that stress balance in Hanging Basket walking process.Walking mechanism is can to draw whole Hanging Basket along track
The traction apparatus that beam at the uniform velocity, is stably walked forward.
Cantilever cradle construction is widely used to concrete continuous bridge, during Hanging Basket cantilever construction, has often constructed
After becoming a beam section, Hanging Basket need to run to next beam section.Traditional construction technology uses the traction of artificial chain block
Hanging Basket is walked, and every Hanging Basket walking need to be equipped with chain block and 8 workmans, not only labour force's throwing of 2 10T
Enter relatively big, inefficiency, and also walking process is the longest.At present, the widely used liquid of Hanging Basket walking mechanism
Pressure jack thrusting slip bearing drives the walking of whole Hanging Basket, and it is it is crucial that arrange counter-force seat at track beam-ends,
Steel strand wires or fining twisted steel it is provided with, extruded sleeve extruding jail, one end when using steel strand wires between counter-force seat and jack
Gu, when using fining twisted steel, one end anchor plate is fixed, and uses oil pump to Hanging Basket both sides jack after installing
Synchronous tension, keeps synchronization to move ahead.Cause toppling for preventing from Hanging Basket walking process is affected by eccentric moment, must
Compressing walking mechanism must be set.At present, compressing walking mechanism mainly has two kinds, a kind of for use sleeper beam+track+
The compressing walking mechanism that in track, " back-pressure wheel " is constituted；Another kind of is to use to arrange back-pressure on main couple longeron
The compressing walking mechanism of wheel shaft.
1, the compressing walking mechanism using sleeper beam+track+track interior " back-pressure wheel " to constitute needs substantial amounts of sleeper beam
Carrying out the track that place mat is made up of I-steel, steel requirement is big, relatively costly.Back-pressure is taken turns by being located at track I-shaped
The monosymmetric two parts of steel web are constituted, and the upper wheel face of back-pressure wheel contacts with the lower surface of I-steel top airfoil,
Formed and roll operative minor.The compressing walking mechanism of this structure is connected on the level frame of girder truss because of back-pressure wheel,
The lifting gravity of level frame cantilever end forms eccentric moment to level frame, acts on track by back-pressure wheel, gives
Track defines a uplift force, this power for the fastness of track that is downwardly fixed on sleeper beam with bolt with
Stability is the most unfavorable.Only anchored with rail contact by back-pressure wheel during the walking of girder truss, fastness and stability
Difference, during walking, the asynchronous back-pressure wheel that is easily caused derails, and causes Hanging Basket to topple, and construction safety risk is big.
2, arranging the compressing walking mechanism of back-pressure wheel shaft on main couple longeron, this compressing walking mechanism is back-pressure wheel
Axle anchors back-pressure main couple longeron by fining twisted steel, and fining twisted steel is embedded in concrete in advance.This compressing vehicle with walking machine
Structure ensure that Hanging Basket walking safety, and stress is firm, and simple in construction is easy to implement.But owing to back-pressure wheel shaft is former
Ground rotates, and main couple longeron jib-length is limited, and shortcoming is that Hanging Basket single walking effective travel is shorter, hangs every time
Basket travel distance is only main couple longeron prolongation, walks in this partial stroke range, and single segmental concrete is constructed
Time Hanging Basket can not once walk and put in place, Hanging Basket walking and the work of fining twisted steel back-pressure wheel shaft lock longeron replace into
OK, construction technology is complex, unfavorable to construction speed.
Thus, the present inventor relies on experience and the practice being engaged in relevant industries for many years, proposes one and hangs for cantilever
The compressing walking mechanism of basket and cantilever cradle, to overcome the defect of prior art.
Summary of the invention
It is an object of the invention to provide a kind of compressing walking mechanism for cantilever cradle and cantilever cradle, make extension
Eccentric tilting moment in basket walking process is completely by the fining twisted steel carrying being anchored in concrete, it is possible to meets and hangs
Basket is once walked and is put in place, and construction safety, construction speed can be guaranteed.
The object of the present invention is achieved like this, a kind of compressing walking mechanism for cantilever cradle, described compressing
Walking mechanism is arranged on the rear portion of cantilever cradle, and described compressing walking mechanism includes such as lower component:
Rear cross beam, described rear cross beam is arranged on the rear upper of main couple longeron along horizontal cross, and described rear horizontal
Beam is fixing with described main couple longeron to be connected；
Reaction beam, described reaction beam is disposed longitudinally on the side of main couple longeron along level, and with described main couple
Longeron is parallel；The front-end and back-end of described reaction beam are anchored at box beam beam section by reaction beam fixing device respectively
On；Described reaction beam is for bearing the tilting moment of described cantilever cradle；
Back-pressure wheel apparatus, what described back-pressure wheel apparatus can vertically move is set on described reaction beam；Described back-pressure
The bottom of wheel apparatus and the bottom surface Structure deformation of described reaction beam, the top of described back-pressure wheel apparatus is fixed on described
On rear cross beam；Described back-pressure wheel apparatus is for passing to described reaction beam by the power on described main couple longeron.
In a better embodiment of the present invention, described back-pressure wheel apparatus includes:
Bracing frame, support frame as described above is set on described reaction beam, and the fixing connection in the upper end of support frame as described above is described
Rear cross beam；
Roller, described roller is rotatably connected on the bottom of support frame as described above by wheel shaft, and described roller is positioned at described
The lower section of reaction beam, the upper wheel face of described roller and the bottom surface Structure deformation of described reaction beam.
In a better embodiment of the present invention, the top of support frame as described above is provided with connection end, described connection end
Both sides be respectively symmetrically and extend downwardly from side plate, the bottom of two described side plates is rotationally connected institute by described wheel shaft
State roller；Described reaction beam is between two described side plates, and described connection end is by bolt and described rear cross beam
Connect.
In a better embodiment of the present invention, described reaction beam fixing device includes that first fixes beam and second
Fixing beam；Described first fixes beam level is anchored at the upper surface of described box beam beam section；Described second fixes beam erects
Straight setting, it is fixing that beam overlap joint is fixed in the described second lower end and described first fixing beam, and described second fixes beam
Upper end is fixing with described reaction beam overlap joint.
In a better embodiment of the present invention, described first fixes beam is provided with two, and two described first solid
Determine beam stacked on top to arrange；Fix beam for two described first and be anchored at described box beam beam section by fining twisted steel
Upper surface.
In a better embodiment of the present invention, described first fixes beam is made up of two first U-type groove steel,
Two described first relative being arranged side by side in U-type groove steel back side in same level, and two described U
Having gap between the back side of type channel-section steel, the upper side and lower side of two described first U-type groove steel all uses connecting plate
Link together；Two described first described gaps when fixing beam stacked on top communicate up and down；Described finish rolling screw thread
Steel is each passed through the described first U-type groove steel of every side and anchors with described box beam beam section；Described second fixes under beam
End is extend in described gap and is connected with the described first U-type groove steel bolt of both sides by reinforcing plate.
In a better embodiment of the present invention, described second fixes beam by upper linkage section and lower linkage section group
Become；Described lower linkage section is made up of two second U-type groove steel, and two described second U-type groove steel openings are relative
Vertically snap together, and be respectively adopted described connecting plate by two described second in the both sides forming snapping seam
U-type groove steel links together；Described lower linkage section stretches in described gap, every described second U-type groove steel
The back side is connected with the back side bolt of corresponding described first U-type groove steel by described reinforcing plate respectively.
In a better embodiment of the present invention, described upper linkage section is made up of two the 3rd U-type groove steel；Two
3rd relative being vertically arranged side by side in the U-type groove steel back side described in root, the back of the body of every described 3rd U-type groove steel lower end
Face all overlaps with the back side of corresponding described second U-type groove steel upper end, and is bolted to the reinforcement plate described in passing through
Together；Described reaction beam between two described 3rd U-type groove steel, two described 3rd U-type groove steel upper ends
The back side be connected with described reaction beam bolt by described reinforcing plate.
The purpose of the present invention can also be achieved in that, a kind of cantilever using compressing walking mechanism as mentioned above is hung
Basket, described cantilever cradle is provided with the girder truss that three chip architectures are identical, and three described girder truss are in described box beam
Arranging the most at equal intervals of beam section；Every described girder truss includes described main couple longeron, described main couple
Longeron is longitudinally disposed along described box beam beam section；Described rear cross beam horizontal cross is arranged on three described main couples and indulges
The rear upper of beam, and fixing with three described main couple longerons be connected；Described in adjacent two panels between girder truss
It is equipped with a set of described compressing walking mechanism.
From the above mentioned, the eccentric moment in cantilever cradle walking process can be passed by the compressing walking mechanism of the present invention
Pass the fining twisted steel in the concrete being anchored at box beam beam section, carried by fining twisted steel completely, it is to avoid Hanging Basket
Walking, duty anchor force all concentrate on main couple longitudinal axis, and force structure is the most reasonable, improve outstanding
The safety of arm Hanging Basket walking.This compressing walking mechanism is formed by small-sized steel structure assembling, it is not necessary to reset for large-scale
Standby spelling.Owing to using reaction beam, the length of this reaction beam can be arranged as required to, and meets cantilever cradle one
The requirement that secondary walking puts in place, so its construction safety, progress can be guaranteed.Knot according to constructed box beam
Structure feature, be arranged side by side in box beam beam section three girder truss, is equipped with a set of between adjacent two panels girder truss
Compressing walking mechanism, force structure is more reasonable.
Accompanying drawing explanation
The following drawings is only intended to, in schematically illustrating the present invention and explaining, not delimit the scope of the invention.
Wherein:
Fig. 1: oppress the side structure schematic diagram of walking mechanism and cantilever cradle for the present invention.
Fig. 2: oppress the rear portion anchor structure view of walking mechanism for the present invention.
Fig. 3: for the structure for amplifying view of back-pressure wheel apparatus at A in Fig. 1.
Fig. 4: fix beam and second in the present invention first and fix the side schematic view of beam lap-joint.
Fig. 5: fix beam and second in the present invention first and fix the top view of beam lap-joint.
Fig. 6: be the cross-sectional configuration figures that snap together of two single u-shaped channel-section steels.
Fig. 7: fix beam, the second attachment structure enlarged drawing fixing beam and reaction beam at B in Fig. 2 first.
Detailed description of the invention
In order to the technical characteristic of the present invention, purpose and effect are more clearly understood from, now comparison accompanying drawing explanation
The detailed description of the invention of the present invention.
As it is shown in figure 1, left and right directions is that longitudinally the direction being perpendicular to paper is horizontal in figure.The present invention provides
A kind of compressing walking mechanism 100 for cantilever cradle, cantilever cradle 200 includes main couple longeron 2011,
Described main couple longeron 2011 is arranged on slip support abutment 202 along vertical equity, and slip support abutment 202 slides
Being supported on track girder 203, track girder 203 is anchored in box beam beam section a, described under walking mechanism effect
Main couple longeron 2011 can vertically move along track girder 203.Described compressing walking mechanism 100 is arranged on outstanding
The rear portion of arm Hanging Basket 200, described compressing walking mechanism 100 includes such as lower component:
Rear cross beam 101, described rear cross beam 101 is horizontally installed on the rear portion of main couple longeron 2011 along horizontal plane
Top, and described rear cross beam 101 is fixing with described main couple longeron 2011 is connected, can be vertical with described main couple
Beam 2011 moves together；
Reaction beam 102, described reaction beam 102 is disposed longitudinally on the side of main couple longeron 2011 along horizontal plane,
And it is parallel with described main couple longeron 2011；The front-end and back-end of described reaction beam 102 pass through reaction beam respectively
Fixing device is anchored in box beam beam section a；Described reaction beam 102 is for bearing inclining of described cantilever cradle 200
Cover moment；
Back-pressure wheel apparatus 103, what described back-pressure wheel apparatus 103 can vertically move is set in described reaction beam 102
On；The bottom of described back-pressure wheel apparatus 103 and the bottom surface Structure deformation of described reaction beam 102, described back-pressure is taken turns
The top of device 103 is fixed on described rear cross beam 101；Described back-pressure wheel apparatus 103 is for by described main truss
Power on frame longeron 2011 passes to described reaction beam 102.
The work process of above-mentioned compressing walking mechanism 100 is: main couple longeron 2011 is in the effect of walking mechanism
Under mobile along track girder 203 longitudinally (right side in figure), drive rear cross beam 101 to move together；From figure
It can be seen that this cantilever cradle 200 is with slip support abutment 202 as fulcrum in 1, one can be produced and dump forward
Moment, there is the trend being upturned at the rear portion of cantilever cradle 200；Rear cross beam 101 is by main couple longeron 2011
The moment upwarped is delivered on reaction beam 102 by back-pressure wheel apparatus 103, and back-pressure wheel apparatus 103 clasps counter-force
Rolling reach while beam 102 bottom surface on reaction beam 102 bottom surface, reaction beam 102 is anchored at box beam beam section a
On finally bear the tilting moment of whole cantilever cradle 200, the length of reaction beam 102 is cantilever cradle 200
The distance that can move forward.Due to reaction beam 102 with main couple longeron 2011 the most point-blank, therefore,
The compressing walking mechanism 100 of the present invention avoids Hanging Basket walking, duty anchor force all concentrates on main couple
On longitudinal axis, force structure is the most reasonable, improves the safety of cantilever cradle 200 walking.This reaction beam 102
Length can be configured according to the needs of construction, cantilever cradle 200 can be met and once walk the requirement put in place,
So using the construction safety of this compressing walking mechanism 100, progress to be guaranteed.
It addition, present invention also offers a kind of cantilever cradle 200 using and oppressing walking mechanism 100 as mentioned above,
As in figure 2 it is shown, described cantilever cradle 200 is provided with the girder truss that three chip architectures are identical, three described girder purlins
Frame is arranged the most at equal intervals described box beam beam section a, and three girder truss lateral connection are integrally formed；Often
Girder truss described in sheet includes described main couple longeron 2011, and described main couple longeron 2011 is along described box beam beam
Section a's is longitudinally disposed；Described rear cross beam 101 horizontal cross is arranged on three described main couple longerons 2011
Rear upper, and fixing with three described main couple longerons 2011 be connected；Girder truss described in adjacent two panels it
Between be equipped with a set of described compressing walking mechanism 100.Be arranged side by side in box beam beam section a three girder truss,
Arranging a set of compressing walking mechanism 100 between adjacent two panels girder truss, force structure is more reasonable.
As a specific embodiment of the present invention, as depicted in figs. 1 and 2, the box-beam structure constructed is for single
Case dual chamber, in order to make force structure more reasonable, cantilever cradle 200 uses the girder truss that three chip architectures are identical
201, three described girder truss 201 arranging the most at equal intervals in described box beam beam section a, by laterally
Tie-beam lateral connection is an entirety.Every girder truss 201 includes a column being vertically arranged 2012,
The main couple longeron 2011 that connection level is longitudinally disposed is fixed in the bottom of column 2012, and the top of column 2012 is divided
Two connecting rods 2013 Tong Guo not be connected with the front-end and back-end of main couple longeron 2011, form a piece of triangle
Girder truss structure.The downside of main couple longeron 2011 is fixing connects slip support abutment 202, slip support abutment 202
Being slidably supported on track girder 203, track girder 203 is along the longitudinal direction parallel with main couple longeron 2011
It is anchored in box beam beam section a, is used for forming the guide rail that slip support abutment 202 slides.Front end at track girder 203
Be fixed with a counter-force seat 204, the rear side of slip support abutment 202 arrange one for promoting slip support abutment 202 before
The hydraulic feed-through jack 205 entered, a fining twisted steel c is horizontal through slip support abutment 202 and jack
One end anchor plate of 205, fining twisted steel c is fixed on counter-force seat 204.Other two panels girder truss 201
It is also adopted by the connected mode communicated.The side panel labelling stroke mark of track girder 203.Control oil pump system, thousand
Jin top 205 forms counteracting force by this fining twisted steel c on counter-force seat 204, promotes slip support abutment 202
And then drive whole cantilever cradle 200 to move forward.
Described rear cross beam 101 is horizontally installed on the rear upper of three main couple longerons 2011 along horizontal plane,
It is connected by one section of round steel pipe b is fixing between each main couple longeron 2011 with described rear cross beam 101, round steel
Pipe b upper end is connected with rear cross beam 101, and lower end is connected with main couple longeron 2011.As in figure 2 it is shown,
After cantilever cradle 200 walking puts the entrance construction stage in place, worn by the fining twisted steel c being embedded in concrete
Cross described rear cross beam 101, at fining twisted steel c through anchor plate 2014 on the upper rear flank pad of described rear cross beam 101
And it is tightened by bolts fixing, unclamp reaction beam fixing device the most again and complete stress system conversion, make cantilever cradle
The tilting moment of 200 transfers to be born by the fining twisted steel c through described rear cross beam 101.Adjacent two panels girder
Being respectively provided with a described reaction beam 102 between truss 201, its attachment structure is the most identical, anti-with one of them
The attachment structure of power beam 102 illustrates.Described reaction beam 102 is disposed longitudinally on main couple along horizontal plane and indulges
The side of beam 2011, and parallel with described main couple longeron 2011；The front-end and back-end of described reaction beam 102
It is anchored in box beam beam section a by reaction beam fixing device respectively；At cantilever cradle 200 walking phase, pass
The fining twisted steel c of described rear cross beam 101 unclamps, and is not subject to power；Described reaction beam 102 is used for bearing described
The tilting moment of cantilever cradle 200, carrys out holding capacity eventually through reaction beam fixing device.Described back-pressure wheel apparatus
103 can vertically move be set on described reaction beam 102；The bottom of described back-pressure wheel apparatus 103 is with described
The bottom surface Structure deformation of reaction beam 102, the top of described back-pressure wheel apparatus 103 is fixed on described rear cross beam 101
On；Described back-pressure wheel apparatus 103 is for passing to described reaction beam by the power on described main couple longeron 2011
102。
Further, as it is shown on figure 3, described back-pressure wheel apparatus 103 includes bracing frame 1031 and roller 1032,
Bracing frame 1031 is a frame steel structure, and support frame as described above 1031 is set on described reaction beam 102, institute
State the described rear cross beam 101 of the fixing connection in upper end of bracing frame 1031.Described roller 1032 is by wheel shaft 1033
Being rotatably connected on the bottom of support frame as described above 1031, described roller 1032 is positioned at the lower section of described reaction beam 102,
The upper wheel face of described roller 1032 and the bottom surface Structure deformation of described reaction beam 102.Concrete, described support
Substantially one U-shaped framework of frame 1031, its top is provided with connection end, and the both sides of described connection end are the most right
Claiming to extend downwardly from a side plate, the bottom of two described side plates is rotationally connected described rolling by described wheel shaft 1033
Wheel 1032.Described reaction beam 102 between two described side plates, described connection end by bolt with described after
Crossbeam 101 connects.
Further, as shown in Figure 4, Figure 5 and Figure 6, described reaction beam fixing device includes that first fixes beam 104
Beam 105 is fixed with second；Described first fixes beam 104 level is anchored at the upper surface of described box beam beam section a；
Described second fixes beam 105 is vertically arranged, and beam 104 is fixed in the described second lower end and described first fixing beam 105
Overlap joint is fixing, and the described second upper end fixing beam 105 is fixed with described reaction beam 102 overlap joint.Second fixes beam
105 have certain distance between the upper surface of described box beam beam section a, in order to be used for arranging back-pressure wheel apparatus
103.In order to increase reliability, described first fixes beam 104 is provided with two, fixes beam 104 for two described first
Stack setting the most up and down；Fining twisted steel c is utilized to fix two after beam 104 through two first
First fixes beam 104 is anchored at the upper surface of described box beam beam section a.Concrete, described first fixes beam 104
It is made up of two first U-type groove steel 1041, for convenience of description two flanks of U-type groove steel is set to both sides,
The back side, connecting portion location between two flanks, relative with the back side is opening.As it is shown in figure 5, described in two
First relative being arranged side by side in U-type groove steel 1041 back side in same level, and two described first U-shaped
Having gap between the back side of channel-section steel 1041, the upper side and lower side of two described first U-type groove steel 1041 is all adopted
Link together with connecting plate 1042；Connecting plate 1042 is equal in the upper side and lower side of the first U-type groove steel 1041
Even interval is arranged, and the side of connecting plate 1042 is bolted the upper of one of them the first U-type groove steel 1041
Side and downside, the opposite side of connecting plate 1042 is bolted the upside of another the first U-type groove steel 1041
And downside, thus two first U-type groove steel 1041 side by side are connected as one and are integrally formed first and fix beam
104.As shown in Figure 4, beam 104 is fixed when stacking for upper and lower two first, two first U-type groove steel below
The upside of 1041 is bolted together with the downside of two first U-type groove steel 1041 above, therein
Gap communicates up and down.Described fining twisted steel c is each passed through two first U-type groove steel 1041 up and down of every side
Anchor with described box beam beam section a.Described second lower end fixing beam 105 extend in described gap by strengthening
Described first U-type groove steel 1041 bolt that plate 1052 is corresponding with both sides connects.
Further, described second fix beam 105 and be made up of upper linkage section and lower linkage section.Described lower linkage section by
Two second U-type groove steel 1051 form, and as shown in Figure 6, two second U-type groove steel 1051 openings are relative
Vertically snap together, and be respectively adopted described connecting plate 1042 in the both sides forming snapping seam by two pieces the
Two U-type groove steel 1051 link together；Wherein connecting plate 1042 and the company of the second U-type groove steel 1051 both sides
Connect mode identical with the connected mode with the first U-type groove steel 1041 both sides described above.As it is shown in figure 5,
Described lower linkage section stretches in described gap, the consistency of thickness of the width in gap and lower linkage section, every described the
The back side of two U-type groove steel 1051 is affixed with the back side of the first corresponding U-type groove steel 1041, and passes through institute respectively
State reinforcing plate 1052 to connect with the back side bolt of corresponding described first U-type groove steel 1041.I.e. bolt is through adding
Three is connected solid by the strong back side of plate the 1052, first U-type groove steel 1041 and the back side of the second U-type groove steel 1051
Fixed.As it is shown in fig. 7, described upper linkage section is made up of two the 3rd U-type groove steel 1053；Two described 3rd U
Relative being vertically arranged side by side in type channel-section steel 1053 back side, the back side of every described 3rd U-type groove steel 1053 lower end
All overlap with the back side of corresponding described second U-type groove steel 1051 upper end, and by described reinforcing plate 1052 spiral shell
Tether and be connected together；Two the 3rd U-type groove steel 1053 extend straight up, and described reaction beam 102 is positioned at two
Described in root between the 3rd U-type groove steel 1053, the distance between two the 3rd U-type groove steel 1053 and reaction beam 102
Thickness consistent, the back side of two described 3rd U-type groove steel 1053 upper ends by described reinforcing plate 1052 with
Described reaction beam 102 bolt connects.Reaction beam 102 can also use the snapping that two single u-shaped channel-section steel openings are relative
Together, the structure fixing 105 times linkage sections of beam with second is identical.This compressing walking mechanism 100 is by little shaped steel
Structure is assembled, it is not necessary to large lifting equipment spelling.
The present invention oppresses the implementation process of walking mechanism 100 and cantilever cradle 200:
1, according to the plan-position of detail design, the essence of pre-buried relevant position before the concrete placings of box beam beam section a
Roll screw-thread steel c.
2, after attachment rail beam 203, slip support abutment 202, girder truss 201, at main couple longeron 2011
Rear portion install rear cross beam 101.
3, counter-force seat 204 and hydraulic feed-through jack 205 are installed, one end of fining twisted steel c is anchored at
On counter-force seat 204, make fining twisted steel c horizontal through slip support abutment 202, hydraulic feed-through jack 205.
4, install first and fix beam 104, use fining twisted steel c to wear anchoring；Install second and fix beam 105
With reaction beam 102, control well compressing walking mechanism 100 height, regulate amount of lap.
5, bracing frame 1031 and roller 1032 are installed on reaction beam 102.
6, bracing frame 1031 upper end is connected with rear cross beam 101 bolt.
The present invention oppresses the walking process of walking mechanism 100 and cantilever cradle 200:
1, pour the concrete of box beam beam section a and reach design strength and stretch-draw mud jacking terminates；
2, the fining twisted steel c being located on rear cross beam 101 is unclamped, when releasing construction on rear cross beam 101
Anchoring, carry out anchor stress check calculation, the tilting moment of cantilever cradle 200 is transferred to oppress walking mechanism
100, counter-force is transferred to anchor first and fixes on the fining twisted steel c of beam 104 the most at last；
3, jack (being placed at the respective support point of construction formwork) is utilized to hang before and after loosening template system
Bar so that it is decline 10～20cm so that whole template system departs from concrete surface, in order to carry out walking below
Journey；
4, at the slip support abutment 202 of every girder truss 201, place 2 32T jack (these respectively
The effect of jack is to make girder truss 201 lift at vertical direction), three girder truss 201 are placed altogether
6, by whole cantilever cradle 200 jack-up 5～10cm, tighten support bar nut and stabilize it；
5, track girder 203 is slid onto pour the concrete front end of sections, and track girder 203 is anchored in waters
Build on sections；
6, make the jack oil return of 6 vertical supportings, decline three girder truss 201 and make slip support abutment 202
Contact with track girder 203；
7, coating lubricating oil between track girder 203 and slip support abutment 202, operates oil pump, by hydraulic pressure punching
Formula jack 205 thrusting slip bearing 202 moves forward, and drives cantilever cradle 200 to walk, by being marked at track
Scale on beam 203 controls whole cantilever cradle 200 synchronous walking；
8, after cantilever cradle 200 walking puts in place, will through rear cross beam 101 by pre-buried fining twisted steel c
The rear portion anchoring of girder truss 201, then unclamps in compressing walking mechanism 100 and first fixes the essence on beam 104
Roll screw-thread steel c, complete stress system conversion；
9, by compressing walking mechanism 100 be advanced to the position that next sections is specified, treat concrete placings complete, stretch-draw
Mud jacking carries out stress check calculation after terminating；So iterative cycles makes cantilever cradle 200 move forward, until complete all right
Claim the concrete construction of boom segments.
The most foregoing compressing walking mechanism 100 and cantilever cradle 200, the invention have the advantages that
1, compressing walking mechanism 100 uses the version of reaction beam 102, is meeting the premise of force request
Under, the active length of reaction beam 102 can be set according to cantilever cradle 200 single segmental maximum travel distance, protect
Card cantilever cradle 200 is once walked and is put in place, and walking process is uninterrupted, saves the single segmental cantilever construction time, enters
And shorten the whole cantilever casting beam construction period.
2, the Force principle of counter-force seat 204 structure is utilized, by hydraulic feed-through jack 205 stretch-draw finish rolling
Screw-thread steel c thrusting slip bearing 202 drives whole cantilever cradle 200 synchronism stability to walk, simultaneously according to track
The graduation mark of labelling on beam 203, the synchronicity of dynamic tracking Hanging Basket walking.
3, the stress check calculation of cantilever cradle 200 is fixed beam 104 to first by compressing walking mechanism 100, effectively keeps away
Exempted from Hanging Basket walking, duty anchor force all concentrates on girder truss 201 longitudinal axis, uses three masters
Beam truss 201, force structure is the most reasonable, and working place is big, and operability is higher.
The foregoing is only the schematic detailed description of the invention of the present invention, be not limited to the scope of the present invention.
Any those skilled in the art, equivalent done on the premise of without departing from the design of the present invention and principle becomes
Change and amendment, the scope of protection of the invention all should be belonged to.
Claims (9)
1., for a compressing walking mechanism for cantilever cradle, described compressing walking mechanism is arranged on cantilever cradle
Rear portion, it is characterised in that described compressing walking mechanism includes such as lower component:
Rear cross beam, described rear cross beam is arranged on the rear upper of main couple longeron along horizontal cross, and described rear horizontal
Beam is fixing with described main couple longeron to be connected；
Reaction beam, described reaction beam is disposed longitudinally on the side of main couple longeron along level, and with described main couple
Longeron is parallel；The front-end and back-end of described reaction beam are anchored at box beam beam section by reaction beam fixing device respectively
On；Described reaction beam is for bearing the tilting moment of described cantilever cradle；
Back-pressure wheel apparatus, what described back-pressure wheel apparatus can vertically move is set on described reaction beam；Described back-pressure
The bottom of wheel apparatus and the bottom surface Structure deformation of described reaction beam, the top of described back-pressure wheel apparatus is fixed on described
On rear cross beam；Described back-pressure wheel apparatus is for passing to described reaction beam by the power on described main couple longeron.
2. the compressing walking mechanism for cantilever cradle as claimed in claim 1, it is characterised in that described
Back-pressure wheel apparatus includes:
Bracing frame, support frame as described above is set on described reaction beam, and the fixing connection in the upper end of support frame as described above is described
Rear cross beam；
Roller, described roller is rotatably connected on the bottom of support frame as described above by wheel shaft, and described roller is positioned at described
The lower section of reaction beam, the upper wheel face of described roller and the bottom surface Structure deformation of described reaction beam.
3. the compressing walking mechanism for cantilever cradle as claimed in claim 2, it is characterised in that described
The top of bracing frame is provided with connection end, and the both sides of described connection end are respectively symmetrically and extend downwardly from side plate, two institutes
The bottom stating side plate is rotationally connected described roller by described wheel shaft；Described reaction beam be positioned at two described side plates it
Between, described connection end is connected with described rear cross beam by bolt.
4. the compressing walking mechanism for cantilever cradle as claimed in claim 1, it is characterised in that described
Reaction beam fixing device includes that first fixes beam and second and fix beam；Described first fixes beam level is anchored at described
The upper surface of box beam beam section；Described second fixes beam is vertically arranged, and described second fixes the lower end of beam and described the
One fixes beam overlap joint fixes, and the described second upper end fixing beam is fixed with described reaction beam overlap joint.
5. the compressing walking mechanism for cantilever cradle as claimed in claim 4, it is characterised in that described
First fixes beam is provided with two, fixes beam stacked on top for two described first and arranges；Fix beam for two described first
The upper surface of described box beam beam section it is anchored at by fining twisted steel.
6. the compressing walking mechanism for cantilever cradle as claimed in claim 5, it is characterised in that described
First fixes beam is made up of two first U-type groove steel, and two described first U-type groove steel are carried on the back in same level
Between relative being arranged side by side in face, and the back side of two described first U-type groove steel, there is gap, two described
The upper side and lower side of one U-type groove steel all uses connecting plate to link together；Fix the upper and lower heap of beam for two described first
Time folded, described gap communicates up and down；Described fining twisted steel is each passed through described first U-type groove steel and the institute of every side
State the anchoring of box beam beam section；Described second lower end fixing beam extend in described gap by reinforcing plate and both sides
Described first U-type groove steel bolt connects.
7. the compressing walking mechanism for cantilever cradle as claimed in claim 6, it is characterised in that described
Second fixes beam is made up of upper linkage section and lower linkage section；Described lower linkage section is made up of two second U-type groove steel,
Two described second U-type groove relative vertically snapping together of steel opening, and divide in the both sides forming snapping seam
Described connecting plate is not used to be linked together by two described second U-type groove steel；Described lower linkage section stretches into described
In gap, the back side of every described second U-type groove steel is respectively by described reinforcing plate and a corresponding described U
The back side bolt of type channel-section steel connects.
8. the compressing walking mechanism for cantilever cradle as claimed in claim 7, it is characterised in that described
Upper linkage section is made up of two the 3rd U-type groove steel；Relative the most vertical in two described 3rd U-type groove steel back side
Arrange, the back side of every described 3rd U-type groove steel lower end all with the back of the body of corresponding described second U-type groove steel upper end
Face overlaps, and is bolted to the reinforcement plate together described in passing through；Described reaction beam be positioned at two described 3rd U-shaped
Between channel-section steel, the back side of two described 3rd U-type groove steel upper ends is by described reinforcing plate and described reaction beam bolt
Connect.
9. use the cantilever cradle oppressing walking mechanism as according to any one of claim 1 to 8, its
Being characterised by, described cantilever cradle is provided with the girder truss that three chip architectures are identical, and three described girder truss are in institute
State arranging the most at equal intervals of box beam beam section；Every described girder truss includes described main couple longeron, described
Main couple longeron is longitudinally disposed along described box beam beam section；Described rear cross beam horizontal cross is arranged on three described masters
The rear upper of truss longeron, and fixing with three described main couple longerons be connected；Girder purlin described in adjacent two panels
A set of described compressing walking mechanism it is equipped with between frame.
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| CN201610343976.8A CN105839550B (en) | 2016-05-23 | 2016-05-23 | A kind of compressing walking mechanism and cantilever cradle for cantilever cradle |
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| CN201610343976.8A CN105839550B (en) | 2016-05-23 | 2016-05-23 | A kind of compressing walking mechanism and cantilever cradle for cantilever cradle |
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| CN112127288A (en) * | 2020-10-29 | 2020-12-25 | 中建八局第二建设有限公司 | Novel track-free triangular hanging basket construction method for cantilever casting beam |
| CN113152302A (en) * | 2021-05-13 | 2021-07-23 | 中建八局第二建设有限公司 | Automatic moving device for continuous beam bridge hanging basket |
| CN113502759A (en) * | 2021-08-16 | 2021-10-15 | 合肥工业大学 | Truss and rail automatic walking device of hanging basket system |
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| CN105839550B (en) | 2017-10-03 |
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