Combined beam cable-stayed bridge rapid beam erection and bridge deck slab wet joint synchronous construction method

Abstract

The invention discloses a composite beam cable-stayed bridge rapid girder erection and bridge deck slab wet joint synchronous construction method, and relates to the technical field of cable-stayed bridge construction, the composite beam cable-stayed bridge rapid girder erection and bridge deck slab wet joint synchronous construction method comprises a steel box girder, a plurality of bridge deck slabs are arranged above the steel box girder, a wet joint is formed between every two adjacent bridge deck slabs, and a bridge girder erection machine is arranged on the steel box girder of which the previous section is erected; a supporting leg of the bridge girder erection machine corresponds to a vertical supporting rib of the steel box girder, a fixing structure is arranged in a wet joint formed between every two adjacent bridge deck slabs, the fixing structures abut against the side walls of the bridge deck slabs, a connecting structure for connecting the adjacent bridge deck slabs is arranged in the wet joint formed between the bridge deck slabs, and the fixing structures abut against the side walls of the bridge deck slabs. The steel box girder is provided with a first supporting piece making contact with a supporting leg of the bridge girder erection machine. The bridge girder erection machine directly moves forwards to continue to hoist the steel box girder and the bridge deck slab of the next section, wet joint connection construction between the bridge deck slabs of the previous section is carried out while the steel box girder and the bridge deck slab are erected, the construction efficiency of a bridge deck is improved, and the construction period is shortened.

Description

Technical Field

[0001] The present application relates to the technical field of cable-stayed bridge construction, and in particular to a method for rapid beam erection and synchronous construction of wet joints of a composite beam cable-stayed bridge. Background Art

[0002] The construction process of the original cable-stayed bridge's connector concrete composite beam is to first erect the steel box girder, then hoist the bridge deck, then install the wet joint connectors and pour the wet joint concrete, tension the bridge deck prestress after seven days of curing, and finally move the bridge erection machine forward to hoist the next section.

[0003] When carrying out sequential construction, the bridge-erecting machine cannot start hoisting the steel box girder and bridge deck of the next section until the wet joint concrete of the previous section has solidified, which takes a long time.

[0004] With respect to the above-mentioned related technologies, the inventors believe that the overall construction period is relatively long if the bridge erection machine is moved to start the hoisting of the steel box girder and bridge deck of the next section after the wet joint concrete between the bridge decks of the previous stage has completely solidified. Summary of the invention

[0005] The purpose of the present application is to provide a method for rapid beam erection and synchronous construction of wet joints of bridge decks for a composite beam cable-stayed bridge, so as to improve the problem of a long overall construction period, in which the bridge erection machine is moved to start the hoisting of the steel box beams and bridge decks of the next section after the wet joint concrete between the bridge decks of the previous stage has solidified.

[0006] The present application provides a structure for rapid beam erection and synchronous construction of wet joints of a composite beam cable-stayed bridge, which adopts the following technical solutions: A structure for rapid beam erection and simultaneous wet joint construction of bridge decks for a composite beam cable-stayed bridge, comprising a steel box beam, a plurality of bridge decks being arranged above the steel box beam, wet joints being formed between adjacent bridge decks, a bridge erection machine being arranged on the steel box beam on which the previous section has been erected, the legs of the bridge erection machine corresponding to the vertical supporting ribs of the steel box beam, a fixed structure being arranged in the wet joint formed between the bridge decks of two adjacent sections, the fixed structure being abutted against the side walls of the bridge deck, a connecting structure connecting adjacent bridge decks being arranged in the wet joint formed between the bridge decks, and a support member being arranged on the steel box beam for contact with the legs of the bridge erection machine.

[0007] By adopting the above technical scheme, the bridge-erecting machine is placed on the erected steel box girder, the steel box girder to be erected is hoisted by the bridge-erecting machine and fixed together with the erected steel box girder, and then the bridge deck is hoisted onto the steel box girder by the bridge-erecting machine, and the bridge deck is fixed by the fixing structure and the connecting structure to prevent the bridge deck from slipping on the steel box girder when the bridge-erecting machine moves forward, and then the bridge-erecting machine can be directly moved forward to continue hoisting the steel box girder and bridge deck of the next section, without waiting for the wet joint poured concrete between the bridge decks of the previous section to solidify, thereby improving the working efficiency of the bridge-erecting machine, and continuing to connect the wet joints between the bridge decks after the steel box girder and bridge deck are erected, thereby improving the construction efficiency of the bridge deck and shortening the construction period.

[0008] Optionally, the fixing structure includes a fixing seat 1 and a fixing seat 2, the fixing seat 1 being arranged on both sides above the steel box girder and corresponding to the side walls of the two ends of the bridge deck, a fixing frame 1 being arranged above the fixing seat 1 and abutting against the side walls of the bridge deck, the fixing seat 2 being arranged above the steel box girder and corresponding to the two sides of the bridge deck, the fixing seat 2 being in contact with the side walls of the bridge deck on both sides of the wet joint, a fixing frame 2 being arranged on the fixing seat 2 and abutting against the side walls of the bridge deck on both sides of the wet joint, the side of the support member 1 away from the bridge erection machine being in contact with the fixing seat 2, a plurality of fixing members being arranged above the steel box girder, a fixing groove being opened at a position corresponding to the fixing members below the bridge deck, and the side walls of the fixing seat 2 abutting against the fixing members in the wet joint.

[0009] By adopting the above technical scheme, the fixing parts arranged on the steel box girder play a certain fixing role on the bridge deck by contacting with the fixing groove under the bridge deck. The fixing seat 1 and the fixing frame 1 arranged on both sides of the steel box girder can prevent the bridge deck from moving on the steel box girder along the width direction of the bridge as much as possible. The fixing seat 2 and the fixing frame 2 are arranged in the wet joint formed between the bridge decks to prevent the bridge deck from moving along the length direction of the bridge, thereby avoiding damage to the fixing parts arranged on the steel box girder due to the movement of the bridge deck.

[0010] Optionally, a positioning groove 1 is provided above the fixing seat 2, and the inner side wall of the positioning groove 1 corresponds to the lower side of the fixing frame 2. A fixing plate 1 is provided on the side of the fixing frame 2 close to the bridge deck, and the fixing plate 1 abuts against the side walls on both sides of the bridge deck. A fixing plate 2 abuts against the side wall of the bridge deck of the next section is provided on the side of the fixing frame 2 away from the bridge deck of the previous section, and a support rod connected to the fixing frame 2 is provided between the fixing plates 1 and 2.

[0011] By adopting the above technical solution, the fixing frame 2 is connected to the fixing frame 2 through the positioning groove 1 provided on the fixing seat 2. After the bridge deck is fixed, the fixing frame 2 can be removed from the fixing seat 2. The fixing plates 1 and 2 provided on both sides of the fixing frame 2 are used to support the side walls of the bridge deck on both sides of the wet joint, thereby increasing the force-bearing area of ​​the side walls of the bridge deck and minimizing the damage to the bridge deck. The fixing plates 1 and 2 on both sides are supported by the support rods connected to the fixing frame 2 to further prevent the bridge deck from moving on the steel box girder.

[0012] Optionally, a driving member is provided on the side of the bridge deck of the previous section away from the fixed plate 1, and the driving member is connected to the fixed frame 2. The driving rod of the driving member abuts against the fixed plate 1 and the fixed plate 2. A positioning block is provided on the side of the fixed seat 2 close to the support member 1, and a positioning groove 2 is formed on the positioning block and fits with a side wall of the support member. The side of the support member 1 close to the bridge erection machine abuts against the fixing member on the steel box girder.

[0013] By adopting the above technical scheme, the bridge decks on both sides of the wet joint are supported and fixed by pushing the fixing plates 1 and 2 on both sides by the driving member arranged on the fixing frame 2, and the bridge deck is fixed to minimize the movement of the bridge deck on the steel box girder. The positioning groove 2 of the positioning block arranged on the side of the fixing seat 2 close to the support member 1 is fitted with the side wall of the support member, so that the support member 1 is fixed in the wet joint through the positioning block and the fixing member. The support member 1 is supported by the rear legs at the bottom of the bridge erecting machine, so that the rear legs of the bridge erecting machine correspond to the vertical support ribs in the steel box girder, so as to prevent the bridge erecting machine from moving on the steel box girder and causing damage to the steel box girder. Through the support member 1, the bridge erecting machine does not need to step on the bridge deck to cause damage to the bridge deck.

[0014] Optionally, the connecting structure includes a connecting short rod, which is connected to the pre-embedded connecting parts of the bridge deck side walls of two sections along the length direction of the bridge, and the connecting short rod corresponds to the two sides of the second fixing frame. A connecting long rod is provided above the connecting short rod and is connected to the pre-embedded connecting parts of the bridge deck side walls along the width direction of the bridge.

[0015] By adopting the above technical scheme, short connecting rods are connected and fixed between the connecting parts of the bridge deck along the two length directions of the bridge, and the bridge deck is connected by connecting the short rods. After the bridge-erecting machine moves forward, the connecting parts of the side walls of the bridge deck are further connected and fixed by connecting long rods, thereby further reducing the possibility of the bridge deck slipping on the steel box girder when the bridge-erecting machine moves to the next section, and playing a certain limiting role on the movement of the bridge deck on the steel box girder, thereby avoiding damage to the shear nails on the steel box girder caused by the movement of the bridge deck on the steel box girder.

[0016] Optionally, both ends of the fixing seat 1 are provided with fixing blocks 1 at the positions of the wet joints between the bridge decks of the two segments, and the fixing blocks 1 abut against the side walls of the bridge decks on both sides of the wet joints. A fixing block 2 abuts against the side walls of the bridge decks on both sides of the wet joints, and an end of the fixing block 2 away from the fixing block 1 is in contact with the connecting piece of the side wall of the bridge deck.

[0017] By adopting the above technical solution, fixed blocks 1 are set at the positions of the wet joints between the two segments of the bridge deck at both ends of the fixed seat 1, and the two segments of the bridge deck are further fixed by the fixed block 1 and the fixed block 2 set on one side of the fixed block 1, so as to prevent the bridge deck from being blocked by the baffle set on the fixed frame 2 when the bridge erection machine moves, thereby further preventing the bridge deck from moving with the movement of the bridge erection machine.

[0018] Optionally, a baffle in contact with the side wall of the bridge deck is provided on the side of the fixed block 1 close to the bridge deck, a connecting rod is provided on the side of the baffle close to the fixed block 1, a groove corresponding to the connecting rod is opened on the fixed block 1, and the connecting rod is inserted in the groove.

[0019] By adopting the above technical solution, a baffle is provided on the side wall of the fixed block 1 to contact the side wall of the bridge deck, so as to block the movement of the bridge deck along the width direction of the bridge to a certain extent, increase the contact area with the bridge deck by using the baffle, and reduce the damage to the bridge deck. The connecting rod provided on the baffle is opposite to the groove provided on the fixed block 1, so that the baffle can be removed from the fixed block 1 after the wet joint construction between the bridge decks is completed.

[0020] Optionally, the steel box girder is provided with a support member 2 at the position of the front support leg of the bridge erecting machine, and a positioning groove 3 corresponding to the fixing member is opened on the support member 2. The support member 2 passes through the fixing member and abuts against the leg of the bridge erecting machine at one end where the steel box girder is connected to the steel box girder to be erected, and the side of the bridge deck close to the steel box girder abuts against the support member 2.

[0021] By adopting the above technical solution, a second support member is provided on the front support leg of the bridge erecting machine, and the force bearing area between the front support leg of the bridge erecting machine and the steel box girder is increased by the second support member, thereby minimizing the possibility of deformation of the steel box girder under the action of the bridge erecting machine.

[0022] Optionally, a method for rapid beam erection and synchronous construction of bridge deck wet joints of a composite beam cable-stayed bridge comprises: The bridge erection machine is arranged on the steel box girder of the previous section that has been erected, and the bridge erection machine is used to lift the steel box girder of the next section to be erected. After the steel box girder is fixed, the bridge erection machine lifts the bridge deck onto the steel box girder; The bridge deck is fixed by fixing seats 1 and 2 on the steel box girder, and the pre-buried connectors of the side walls of the two bridge decks are connected by connecting short rods between the wet joints between adjacent bridge decks; After the bridge deck is fixed, the bridge erection machine is moved forward so that the legs of the bridge erection machine correspond to the vertical support ribs in the steel box girder, and the steel box girder and bridge deck of the next section are hoisted; While the bridge-erecting machine is hoisting the next section, the fixed structure in the wet joint is removed, and the pre-embedded connectors on the side wall of the bridge deck of the previous section are connected along the width of the bridge using long connecting rods. After the wet joint of the bridge deck of the previous section is connected and fixed, concrete is poured.

[0023] Optionally, the construction of cable-stayed bridge beams and wet joints on bridge decks is divided into the following steps: The bridge erection machine hoists the bridge deck and moves it to the top of the steel box girder, so that the fixings on the top of the steel box girder are connected with the corresponding fixing grooves under the bridge deck. The movement of the bridge deck along the width direction of the bridge is restricted by the fixing frame 1 on the fixing seat 1 on both sides of the steel box girder. The movement of the bridge deck along the length direction of the bridge is restricted by the fixing frame 2 on the fixing seat 2 arranged on both sides of the steel box girder. Then, the connecting pieces of the side walls of the bridge deck are connected along the length direction of the bridge by connecting short rods. The driving member pushes the fixing plate 1 and the fixing plate 2 arranged on both sides of the fixing frame 2 to support the side walls of the wet joint formed between the adjacent bridge decks, and the fixing blocks 1 and the fixing blocks 2 arranged at both ends of the wet joint further restrict the bridge decks on both sides of the wet joint; After the bridge deck is fixed, the bridge-erecting machine retracts the front and rear legs, allowing the bridge-erecting machine to temporarily step on the bridge deck and move forward in steps, and supports one and two are synchronously moved forward to the wet joints between the bridge decks, so that the legs of the bridge-erecting machine step on the vertical supporting ribs of the steel box girder through supports one and two to support the bridge-erecting machine and hoist the next section of the steel box girder.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. The bridge deck is fixed by the fixing structure and the connecting structure to prevent the bridge deck from sliding on the steel box girder when the bridge erection machine moves forward, so that the bridge erection machine can continue to lift the bridge deck after the lifted steel box girder is erected. After the bridge deck is lifted onto the steel box girder, it is fixed. Then the bridge erection machine can be directly moved forward to continue lifting the steel box girder and bridge deck of the next section. There is no need to wait for the wet joint pouring concrete between the bridge decks of the previous section to solidify, which improves the working efficiency of the bridge erection machine. After the steel box girder and bridge deck are erected, the wet joint connection between the bridge decks can be continued, which improves the construction efficiency of the bridge deck and shortens the construction period. 2. The fixings arranged on the steel box girder play a certain role in fixing the bridge deck by contacting with the fixing grooves under the bridge deck. The fixing seat 1 and the fixing frame 1 arranged on both sides of the steel box girder can prevent the bridge deck from moving along the width direction of the bridge on the steel box girder as much as possible. The fixing seat 2 and the fixing frame 2 are arranged in the wet joint formed between the bridge decks to prevent the bridge deck from moving along the length direction of the bridge, thereby avoiding damage to the fixings arranged on the steel box girder due to the movement of the bridge deck. 3. Connect the fixing frame 2 to the fixing frame 2 through the positioning groove 1 provided on the fixing seat 2. After the bridge deck is fixed, the fixing frame 2 can be removed from the fixing seat 2. The fixing plates 1 and 2 provided on both sides of the fixing frame 2 are used to support the side walls of the bridge deck on both sides of the wet joint, thereby increasing the force-bearing area of ​​the side walls of the bridge deck and minimizing the damage to the bridge deck. The fixing plates 1 and 2 on both sides are supported by the support rods connected to the fixing frame 2 to further prevent the bridge deck from moving on the steel box girder. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is an overall schematic diagram of the rapid beam erection and bridge deck wet joint synchronous construction structure of a composite beam cable-stayed bridge.

[0026] Figure 2 It is a partial schematic diagram of the rapid beam erection and simultaneous construction of wet joints of the bridge deck of a composite beam cable-stayed bridge.

[0027] Figure 3 yes Figure 2 A partial enlarged view of the wet joint of the middle bridge deck.

[0028] In the figure, 1, steel box girder; 11, vertical supporting rib; 12, fixing part; 2, bridge deck; 21, wet joint; 22, fixing groove; 23, connecting part; 3, bridge erecting machine; 31, outrigger; 4, fixing structure; 41, fixing seat 1; 411, fixing frame 1; 42, fixing seat 2; 421, fixing frame 2; 422, positioning groove 1; 423, fixing plate 1; 424, fixing plate 2; 425, support rod; 43, driving part; 44, positioning block; 441, positioning groove 2; 45, fixing block 1; 451, baffle; 452, groove; 453, connecting rod; 46, fixing block 2; 5, connecting structure; 51, connecting short rod; 52, connecting long rod; 6, support member 1; 7, support member 2; 71, positioning groove 3. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1 -Attached Figure 3 , further details of this application are given.

[0030] Embodiment 1 A cable-stayed bridge rapid beam erection and bridge deck wet joint synchronous construction structure, reference Figure 1 and Figure 2 , including a steel box girder 1 that has been erected, a bridge erecting machine 3 is arranged on the erected steel box girder 1, a fixing part 12 is arranged on the steel box girder 1, the fixing part 12 is a shear nail welded on the steel box girder 1, a bridge deck 2 is arranged on the erected steel box girder 1, a fixing groove 22 corresponding to the shear nail is opened at the bottom of the precast concrete bridge deck 2, a wet joint 21 is formed between adjacent bridge decks 2 arranged on the steel box girder 1, a support member 6 is installed in the wet joint 21, the support member 6 is a metal block in contact with the bridge deck 2 on the side wall of the wet joint 21, the support member 6 is in contact with the vertical support rib 11 of the steel box girder 1, the support leg 31 of the bridge erecting machine 3 is arranged on the support member 6 and corresponds to the vertical support rib 11 in the steel box girder 1, so as to minimize the influence of the bridge erecting machine 3 arranged at other positions of the steel box girder 1 on the steel box girder 1.

[0031] Reference Figure 2 and Figure 3 A fixing seat 2 42 is welded in the wet joint 21 between the bridge decks 2 above the steel box girder 1, a positioning groove 1 422 is provided on the metal fixing seat 2 42, a metal fixing frame 2 421 is inserted into the positioning groove 1 422 of the fixing seat 2 42, and a metal fixing plate 1 423 and a fixing plate 2 424 are provided on both sides of the metal fixing frame 2 421 to abut against the side walls of the bridge deck 2 on both sides of the wet joint 21, a metal support rod 425 is welded on the fixing frame 2 421 to abut against the fixing plate 1 423 and the fixing plate 2 424 to limit the movement of the fixing plate 1 423 and the fixing plate 2 424, and a metal support rod 425 is welded on the fixing frame 2 421 to abut against the fixing plate 1 423 and the fixing plate 2 424 to limit the movement of the fixing plate 1 423 and the fixing plate 2 424. A driving member 43 is fixed with bolts. The driving member 43 is a bidirectional hydraulic cylinder. The detents on both sides of the hydraulic cylinder drive the fixing plates 1 423 and 424 on both sides of the fixing frame 421 to abut against the side walls of the bridge deck 2 on both sides of the wet joint 21, thereby limiting the movement of the bridge deck 2 in the length direction of the bridge and minimizing the damage to the fixing member 12 caused by the temporary movement of the bridge erection machine 3 on the bridge deck 2. A metal positioning block 44 is welded on one side of the fixing seat close to the support member 6, and a positioning groove 441 is provided on the positioning block 44 to fit the side wall of the support member 6 to fix the support member 6.

[0032] Reference Figures 1 to 3A metal fixing seat 41 in contact with both ends of the bridge deck 2 is welded on both sides of the steel box girder 1, a metal fixing frame 411 is welded on the fixing seat 41, and the fixing frame 411 abuts against the side wall of the bridge deck 2 to limit the movement of the bridge deck 2 along the width direction of the bridge, and a fixing block 45 is welded on the steel box girder 1 at the position of the wet joint 21 between the adjacent bridge decks 2 at both ends of the fixing seat 41, and the metal short column connected to the bottom of the metal fixing block 45 is welded to the steel box girder 1, and a metal fixing frame 411 is welded on the fixing seat 41. The fixing frame 411 is welded on the side of the fixing block 45 close to the wet joint 21. There is a fixing block 46, and the metal fixing block 46 is against the side walls of the bridge deck 2 on both sides of the wet joint 21, further limiting the sliding of the bridge deck 2 on the steel box girder 1. A baffle 451 is arranged on the side of the fixing block 45 close to the bridge deck 2, and a connecting rod 453 is welded on the side of the baffle 451 close to the fixing part 12, and a groove 452 is provided at the position of the fixing block 45 corresponding to the connecting rod 453, and the baffle 451 is inserted in the groove 452 through the connecting rod 453 to connect with the fixing block 45, so as to further block the movement of the bridge deck 2.

[0033] Reference Figure 2 and Figure 3 , weld the connecting short rods 51 on the embedded connecting pieces 23 on both sides of the bridge deck 2, the connecting pieces 23 are metal rivets embedded in the bridge deck 2, partially weld the connecting long rods 52 on the metal connecting short rods 51, and use the connecting rods 453 short rods to connect the metal rivets to partially construct the wet joints 21 of the bridge deck 2 to the parts. At the same time, the movement of the bridge deck 2 on the steel box girder 1 is minimized by connecting the long rods 52 and the connecting short rods 51, so that the shear nails on the fixed trough side wall of the bridge deck 2 and the steel box girder 1 are formed. The shear nails on the steel box girder 1 are squeezed and damaged; a metal support member 27 is welded at one end of the bridge deck 2 which is close to the steel box girder 1 and connected to the steel box girder 1 to be erected. A positioning groove 3 71 which fits with the fixing member 12 is opened on the support member 27. The support member 27 is against the side wall of the bridge deck 2. After the support leg 31 in front of the bridge erection machine 3 steps on the support member 27, it plays a certain fixing role on the bridge deck 2. The support member 27 is used to increase the contact area between the support leg 31 and the steel box girder 1, so as to minimize the deformation of the steel box girder 1.

[0034] Embodiment 2 S100, arranging the bridge erection machine 3 on the steel box girder 1 of the previous section that has been erected, using the bridge erection machine 3 to lift the steel box girder 1 of the next section to be erected, and after the steel box girder 1 is fixed, the bridge erection machine 3 lifts the bridge deck 2 onto the steel box girder 1; S200, fixing the bridge deck 2 by means of the fixing seat 1 41 and the fixing seat 2 42 on the steel box girder 1, and connecting the pre-buried connectors 23 of the side walls of two bridge decks 2 by means of the connecting short rods 51 between the wet joints 21 between adjacent bridge decks 2; S210, the bridge erection machine 3 lifts the bridge deck 2 and moves it to the top of the steel box girder 1, so that the fixing piece 12 on the top of the steel box girder is connected with the corresponding fixing groove 22 below the bridge deck 2, and the fixing frame 1 411 on the fixing seat 1 41 on both sides of the steel box girder 1 restricts the movement of the bridge deck 2 along the width direction of the bridge, and the fixing frame 2 421 on the fixing seat 2 42 arranged on both sides of the steel box girder 1 restricts the movement of the bridge deck 2 along the length direction of the bridge, and then the connecting piece 23 of the side wall of the bridge deck 2 is connected along the length direction of the bridge with the connecting short rod 51; S220, the fixing plate 1 423 and the fixing plate 2 424 provided on both sides of the fixing frame 2 421 are pushed by the driving member 43 to support the side walls of the wet joint 21 formed between the adjacent bridge decks 2, and the fixing block 1 45 and the fixing block 2 46 provided at both ends of the wet joint 21 further restrict the bridge decks 2 on both sides of the wet joint 21; S300, after the bridge deck 2 is fixed, the bridge erection machine 3 is moved forward so that the legs 31 of the bridge erection machine 3 correspond to the vertical support ribs 11 in the steel box girder 1, and the steel box girder 1 and the bridge deck 2 of the next section are hoisted; S310, after the bridge deck 2 is fixed, the bridge-erecting machine 3 retracts the front legs 31 and the rear legs 31, so that the bridge-erecting machine 3 temporarily steps on the bridge deck 2 and moves forward in steps, and the support members 1 6 and the support members 2 7 are synchronously moved forward to the wet joint 21 between the bridge decks 2, so that the legs 31 of the bridge-erecting machine 3 step on the vertical support ribs 11 of the steel box girder 1 through the support members 1 6 and the support members 2 7, so as to support the bridge-erecting machine 3 and lift the next section of the steel box girder 1.

[0035] S400, while the bridge erection machine 3 is hoisting the next section, the fixed structure 4 in the wet joint 21 is removed, and the pre-buried connecting parts 23 on the side wall of the bridge deck 2 of the previous section are connected along the width direction of the bridge using the connecting long rod 52, and the wet joint 21 of the bridge deck 2 of the previous section is connected and fixed before pouring concrete.

[0036] The implementation principle of the embodiment of the present application is: After the bridge erection machine 3 lifts the bridge deck 2 and sets it on the steel box girder 1, the fixing groove 22 at the bottom of the bridge deck 2 is connected with the fixing piece 12 above the steel box girder 1, and the fixing seat 1 41 and the fixing frame 1 411 arranged on both sides of the steel box girder 1 limit the movement of the steel box girder 1 along the width direction of the bridge, and the fixing seat 2 42 and the fixing frame 2 421 arranged in the wet joint 21 of the adjacent bridge deck 2 abut against the side walls of the bridge deck 2 on both sides of the wet joint 21, and the driving fixing plate 1 423 and the fixing plate 2 424 abut against the side walls of the bridge deck 2 to limit the sliding of the buckwheat board along the length direction of the bridge, and a support piece 6 is arranged in the wet joint 21 corresponding to the vertical support rib 11 above the steel box girder 1, and a support piece 2 7 is arranged at the position where the front end of the steel box girder 1 is connected to the steel box girder 1 to be erected. After the bridge deck 2 is fixed, the bridge erection machine 3 is moved forward so that The bridge-erecting machine 3 temporarily steps on the bridge deck 2, and the fixed structure 4 is used to avoid the bridge deck 2 from slipping on the steel box girder 1 as much as possible, so that the legs 31 of the bridge-erecting machine 3 step on the support members 1 6 and 2 7, and the bridge-erecting machine 3 steps in the direction of the vertical support ribs 11 of the steel box girder 1 to avoid deformation of the steel box girder 1. When the steel box girder 1 moves forward and the next section is hoisted, the workers first remove the fixing seat 2 42 and the fixing frame 2 421 in the wet joint 21 of the previous section, and then use the connecting short rod 51 and the connecting long rod 52 to connect and fix the wet joint 21 between the bridge decks 2 of the previous section, pour concrete in the wet joint 21, and construct the wet joint 21 simultaneously, so that the bridge-erecting machine 3 can construct the wet joint 21 of the previous section while erecting the steel box girder 1 and lifting the bridge deck 2 in the next section, thereby improving the construction efficiency of the bridge deck and shortening the construction period.

[0037] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A structure for rapid beam erection and synchronous wet joint construction of a composite beam cable-stayed bridge, characterized in that: The invention comprises a steel box girder (1), a plurality of bridge decks (2) are arranged above the steel box girder (1), and a wet joint (21) is formed between adjacent bridge decks (2). A bridge erection machine (3) is arranged on the steel box girder (1) on which the previous section has been erected, and the legs (31) of the bridge erection machine (3) correspond to the vertical support ribs (11) of the steel box girder (1). A fixed structure (4) is arranged in the wet joint (21) formed between the bridge decks (2) of two adjacent sections, and the fixed structure (4) abuts against the side wall of the bridge deck (2). A connecting structure (5) for connecting adjacent bridge decks (2) is arranged in the wet joint (21) formed between the bridge decks (2), and a support member (6) in contact with the legs (31) of the bridge erection machine (3) is arranged on the steel box girder (1).

2. The structure for rapid beam erection and synchronous wet joint construction of composite beam cable-stayed bridge according to claim 1 is characterized by: The fixing structure (4) comprises a fixing seat 1 (41) and a fixing seat 2 (42); the fixing seat 1 (41) is arranged on both sides above the steel box girder (1) and corresponds to the side walls at both ends of the bridge deck (2); a fixing frame 1 (411) is arranged above the fixing seat 1 (41); the fixing frame 1 (411) abuts against the side walls of the bridge deck (2); the fixing seat 2 (42) is arranged above the steel box girder (1) and corresponds to both sides of the bridge deck (2); the fixing seat 2 (42) abuts against the bridge deck on both sides of the wet joint (21). The second fixing seat (42) is provided with a fixing frame (421) which abuts against the side walls of the bridge deck (2) located on both sides of the wet joint (21); the first support member (6) is in contact with the second fixing seat (42) on the side away from the bridge erection machine (3); a plurality of fixing members (12) are provided above the steel box girder (1); a fixing groove (22) is provided below the bridge deck (2) at a position corresponding to the fixing member (12); and the side wall of the second fixing seat (42) abuts against the fixing member (12) in the wet joint (21).

3. The structure for rapid beam erection and synchronous wet joint construction of composite beam cable-stayed bridge according to claim 2 is characterized by: A positioning groove (422) is provided above the second fixing seat (42), and the inner side wall of the positioning groove (422) corresponds to the lower side of the second fixing frame (421). A fixing plate (423) is provided on the side of the second fixing frame (421) close to the bridge deck (2), and the fixing plate (423) abuts against the side walls of the bridge deck (2) on both sides. A fixing plate (424) abuts against the side wall of the bridge deck (2) of the next section is provided on the side of the second fixing frame (421) away from the bridge deck (2) of the previous section, and a support rod (425) connected to the second fixing frame (421) is provided between the first fixing plate (423) and the second fixing plate (424).

4. The structure for rapid beam erection and synchronous wet joint construction of composite beam cable-stayed bridge according to claim 3 is characterized by: A driving member (43) is provided on the side of the bridge deck (2) of the fixing plate 1 (423) away from the previous section, and the driving member (43) is connected to the fixing frame 2 (421). The driving rod of the driving member (43) abuts against the fixing plate 1 (423) and the fixing plate 2 (424). A positioning block (44) is provided on the side of the fixing seat 2 (42) close to the support member 1 (6). The positioning block (44) is provided with a positioning groove 2 (441) that fits with the side wall of the support member 1 (6). The side of the support member 1 (6) close to the bridge erection machine (3) abuts against the fixing member (12) on the steel box girder (1).

5. The structure for rapid beam erection and synchronous wet joint construction of composite beam cable-stayed bridge according to claim 1 is characterized by: The connection structure (5) comprises a short connecting rod (51), wherein the short connecting rod (51) is connected to the pre-embedded connecting pieces (23) in the side walls of the two sections of the bridge deck (2) along the length direction of the bridge, the short connecting rod (51) corresponds to the two sides of the second fixing frame (421), and a long connecting rod (52) connected to the pre-embedded connecting piece (23) in the side walls of the bridge deck (2) along the width direction of the bridge is arranged above the short connecting rod (51).

6. The structure for rapid beam erection and synchronous wet joint construction of composite beam cable-stayed bridge according to claim 2, characterized in that: The two ends of the fixing seat 1 (41) are provided with fixing blocks 1 (45) at the positions of the wet joints (21) between the bridge decks (2) of the two sections, and the fixing blocks 1 (45) are abutted against the side walls of the bridge deck (2) located on both sides of the wet joints (21). The side of the fixing block 1 (45) close to the wet joints (21) is provided with fixing blocks 2 (46) abutting against the side walls of the bridge deck (2) on both sides of the wet joints (21), and the end of the fixing block 2 (46) away from the fixing block 1 (45) is in contact with the connecting piece (23) of the side wall of the bridge deck (2).

7. The structure for rapid beam erection and synchronous wet joint construction of composite beam cable-stayed bridge according to claim 6, characterized in that: A baffle (451) in contact with the side wall of the bridge deck (2) is arranged on the side of the fixing block (45) close to the bridge deck (2); a connecting rod (453) is arranged on the side of the baffle (451) close to the fixing block (45); a groove (452) corresponding to the connecting rod (453) is provided on the fixing block (45); and the connecting rod (453) is inserted into the groove (452).

8. The structure for rapid beam erection and synchronous wet joint construction of composite beam cable-stayed bridge according to claim 1 is characterized by: The steel box girder (1) is provided with a second support member (7) at the position of the front support leg (31) of the bridge erecting machine (3); the second support member (7) is provided with a third positioning groove (71) corresponding to the fixing member (12); the second support member (7) passes through the fixing member (12) and abuts against the support leg (31) of the bridge erecting machine (3) located at one end of the steel box girder (1) connected to the steel box girder (1) to be erected; and the side of the bridge deck (2) close to the steel box girder (1) abuts against the second support member (7).

9. A method for rapid beam erection and synchronous construction of bridge deck wet joints for a composite beam cable-stayed bridge, characterized in that: A structure for rapid beam erection and synchronous construction of wet joints of a composite beam cable-stayed bridge according to claims 1 to 8, S100, arranging the bridge erection machine (3) on the steel box girder (1) of the previous section that has been erected, using the bridge erection machine (3) to lift the steel box girder (1) of the next section to be erected, and after the steel box girder (1) is fixed, the bridge erection machine (3) lifts the bridge deck (2) onto the steel box girder (1); S200, fixing the bridge deck (2) by means of a fixing seat 1 (41) and a fixing seat 2 (42) on the steel box girder (1), and connecting the pre-buried connecting pieces (23) of the side walls of two bridge decks (2) by means of a connecting short rod (51) between the wet joints (21) between adjacent bridge decks (2); S300, after the bridge deck (2) is fixed, the bridge erection machine (3) is moved forward so that the legs (31) of the bridge erection machine (3) correspond to the vertical support ribs (11) in the steel box girder (1), and the steel box girder (1) and the bridge deck (2) of the next section are hoisted; S400, while the bridge erection machine (3) is hoisting the next section, the fixed structure (4) in the wet joint (21) is removed, and the pre-buried connecting parts (23) of the side wall of the bridge deck (2) of the previous section are connected along the width direction of the bridge using a connecting long rod (52), and the wet joint (21) of the bridge deck (2) of the previous section is connected and fixed before concrete pouring.

10. The method for rapid beam erection and synchronous wet joint construction of a composite beam cable-stayed bridge according to claim 1, characterized in that: S210, the bridge erection machine (3) lifts the bridge deck (2) and moves it to the top of the steel box girder (1), so that the fixing piece (12) above the steel box girder is connected to the corresponding fixing groove (22) below the bridge deck (2), and the movement of the bridge deck (2) along the width direction of the bridge is restricted by the fixing frame 1 (411) on the fixing seat 1 (41) on both sides of the steel box girder (1), and the movement of the bridge deck (2) along the length direction of the bridge is restricted by the fixing frame 2 (421) on the fixing seat 2 (42) arranged on both sides of the steel box girder (1), and then the connecting piece (23) of the side wall of the bridge deck (2) is connected along the length direction of the bridge by the connecting short rod (51); S220, by means of a driving member (43), a fixing plate 1 (423) and a fixing plate 2 (424) arranged on both sides of a fixing frame 2 (421) are pushed against the side walls of a wet joint (21) formed between adjacent bridge decks (2) for support, and a fixing block 1 (45) and a fixing block 2 (46) arranged at both ends of the wet joint (21) are used to further restrict the bridge decks (2) on both sides of the wet joint (21); S310, after the bridge deck (2) is fixed, the bridge erection machine (3) retracts the front legs (31) and the rear legs (31), so that the bridge erection machine (3) temporarily steps on the bridge deck (2) and moves forward in steps, and the support member 1 (6) and the support member 2 (7) are synchronously moved forward to the wet joint (21) between the bridge decks (2), so that the legs (31) of the bridge erection machine (3) step on the vertical support ribs (11) of the steel box girder (1) through the support member 1 (6) and the support member 2 (7), so as to support the bridge erection machine (3) and hoist the next section of the steel box girder (1).

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