Integral dismantling structure and construction method for large-size cast-in-place support of upper cross beam

Abstract

The overall dismantling structure comprises a bridge tower, the bridge tower comprises two main towers, the large-size cast-in-place support is arranged between the side walls of the two main towers, and an upper cross beam wood mold is arranged at the top of the large-size cast-in-place support. Supporting structures are arranged at the two ends, making contact with the side walls of the two main towers, of the bottom of the large-size cast-in-place support, the two supporting structures are connected with the side walls of the two main towers, first driving mechanisms are arranged on the supporting structures to drive the large-size cast-in-place support to move on the supporting structures, and cable saddle falsework is arranged on the tops of the two main towers. The cable saddle falsework is provided with a winding mechanism, the winding mechanism is connected with a steel cable, the steel cable is connected with the large-size cast-in-place support, the large-size cast-in-place support is pushed out of the supporting structure through the first driving mechanism, the winding mechanism lifts the large-size cast-in-place support to be away from the supporting structure, then the large-size cast-in-place support is lowered to the ground to be dismantled, and the construction period is shortened.

Description

Technical Field

[0001] The present application relates to the technical field of bridge tower upper crossbeam construction, and in particular to an upper crossbeam large-volume cast-in-place bracket integral dismantling structure and a construction method. Background Art

[0002] When the distance between the two main towers of the bridge tower is large, it is necessary to use a tower crane to hoist the brackets in sequence between the two main towers, assemble the brackets into a large-volume cast-in-place bracket, install the distribution beam on the large-volume cast-in-place bracket, install the Bailey beam and the upper beam wooden formwork on the distribution beam, and lift the distribution beam with a jack. After the upper beam is cast, the jack is retracted to demould the distribution beam, Bailey beam and the upper beam wooden formwork from the upper beam, and then the workers disassemble the distribution beam and Bailey beam into separate beams, disassemble the large-volume cast-in-place bracket into separate brackets, and then the tower crane delivers the separate beams and brackets to the ground.

[0003] With respect to the above-mentioned related technologies, the inventor believes that after the upper crossbeam is cast, workers have to dismantle the large-volume cast-in-place bracket bit by bit at a height, and then send it to the ground by a tower crane, which takes too long. Summary of the invention

[0004] The purpose of the present application is to provide an overall dismantling structure and construction method for a large-volume cast-in-place bracket of an upper crossbeam, so as to improve the problem of a long construction period when dismantling a large-volume cast-in-place bracket at a high place and then transporting it to the ground by a tower crane.

[0005] The present application provides a structure for dismantling a large-volume cast-in-place bracket of an upper crossbeam, which adopts the following technical solution: A structure for overall removal of a large-volume cast-in-place support for an upper cross beam, comprising a bridge tower, wherein the bridge tower comprises two main towers, a temporary cross brace is arranged between the two main towers, a large-volume cast-in-place support is arranged between the side walls of the two main towers above the temporary cross brace, an upper cross beam wooden form is arranged on the top of the large-volume cast-in-place support, support structures are arranged at both ends of the bottom of the large-volume cast-in-place support in contact with the side walls of the two main towers, the two support structures are connected to the side walls of the two main towers, a driving mechanism is arranged on the support structure, the driving mechanism drives the large-volume cast-in-place support to move on the supporting structure, a cable saddle frame is arranged on the top of the two main towers, a winding mechanism is arranged on the cable saddle frame, and a steel cable is connected between the winding mechanism and the large-volume cast-in-place support.

[0006] By adopting the above technical scheme, after the casting of the upper crossbeam is completed, the large-volume cast-in-place bracket is separated from the side wall of the figure, and the driving mechanism is used to drive the large-volume cast-in-place bracket to move to the end of the supporting structure away from the main tower, and then the steel cable of the winding structure on the cable saddle frame is connected to the large-volume cast-in-place bracket, and the large-volume cast-in-place bracket is lifted by the winding mechanism and lowered to the ground, so that the large-volume cast-in-place bracket can be quickly disassembled on the ground, thereby shortening the construction period.

[0007] Optionally, the large-volume cast-in-place support includes a bracket one and a bracket two, a fixing block is provided on the two side walls of the main towers, a fixing groove is provided on the fixing block, a detachable fixing plate is provided on the end of the fixing block away from the fixing groove, the bracket one and the bracket two are abutted against the fixing grooves on the corresponding fixing blocks, the fixing plate, the fixing groove and the two brackets are provided with interconnected fixing holes, fixing parts are inserted in the fixing holes, a bracket three is connected between the bracket one and the bracket two, the supporting structure includes a supporting frame and a supporting seat, the supporting frame is connected to the side wall of the main tower below the large-volume cast-in-place support, and the top of the support seat is abutted against the large-volume cast-in-place support.

[0008] By adopting the above technical solution, the large-volume cast-in-place bracket is fixed with a fixing block, and a detachable fixing plate is arranged on the side of the fixing block, so that the large-volume cast-in-place bracket can be detached from the fixing block and contacted with the support seat, so that the large-volume cast-in-place bracket can be completely separated from the side wall of the main tower.

[0009] Optionally, the driving mechanism includes a driving member and a support plate, the support plate is detachably connected to the support seat, the driving rod of the driving member is against the side of the large-volume cast-in-place bracket away from the fixed plate, the driving member is connected to the support plate, a groove is provided on the support seat, and a roller is provided at the bottom of the large-volume cast-in-place bracket near the two support seats, and the roller is in contact with the groove.

[0010] By adopting the above technical scheme, a detachable support plate and a driving member 1 are installed on the support seat, and a roller 1 is arranged at the bottom of the bracket 1 and the bracket 2, so that the large-volume cast-in-place bracket is separated from the side wall of the main tower and is pushed by the driving member 1 to move a certain distance on the support seat, and then the driving member 1 is removed and installed again on the support seat on the side of the large-volume cast-in-place bracket, and the large-volume cast-in-place bracket is continued to be pushed outward of the bridge tower, and the driving member 1 and the roller 1 are used in combination to enable the large-volume cast-in-place bracket to be pushed out faster.

[0011] Optionally, the winding mechanism includes a mounting seat, a second driving member and a winding roller, the mounting seat is arranged on the cable saddle frame, the second driving member is connected to the mounting seat, connecting plates are arranged at both ends of the second driving member, the connecting plates are connected to the mounting seat, the winding roller is rotatably connected to the connecting plates, and the driving shaft of the second driving member drives the winding roller to rotate and wind up the steel cable.

[0012] By adopting the above technical solution, the large-volume cast-in-place bracket is pulled by a steel cable, and the steel cable is slowly tightened by driving the roller with the second driving member, so that the large-volume cast-in-place bracket will not fall off the support seat after being completely pushed out by the first driving member, thereby preventing the large-volume cast-in-place bracket from falling off the support seat after being pushed out a certain distance, causing an accident.

[0013] Optionally, a second groove is provided on the top of the saddle frame, and two rollers are rotatably provided at both ends of the mounting seat, and the two rollers roll on the side walls of the second groove.

[0014] By adopting the above technical solution, groove 2 is opened on the top of the saddle frame to prevent the mounting seat from being separated from the top of the saddle frame when the driving member 3 drives the reels 1 and 3 to rotate to move the mounting seat, thereby damaging the saddle frame.

[0015] Optionally, a driving mechanism 2 is provided at an end of the saddle frame away from the mounting seat, and the driving mechanism 2 includes a driving member 3 and a reel 1. The driving member 3 is connected to the saddle frame, and the reel 1 is rotatably connected to the saddle frame. The reel 1 is connected to a driving rod of the driving member 3, a pull rope is connected to the reel 1, and a locking block is provided on the side of the connecting plate. The saddle frame is rotatably provided with a reel 2 at one end close to the winding mechanism, and the driving rod of the driving member 3 is connected to the reel 3, and the reel 3 rotates relative to the reel 1, and the pull rope is fixed to the connecting plate through the locking block and then passes around the reel 2 and is wound on the reel 3.

[0016] By adopting the above technical solution, a driving member three is arranged on the cable saddle frame, and the driving member three is used to drive the reel one and the reel three to move relative to each other. A pull rope is used to connect the reel one and the mounting seat, which is passed around the reel two and then connected to the reel three, so that the pull rope pulls the mounting seat to move back and forth on the cable saddle frame, so that the mounting seat can pull the large-volume cast-in-place bracket through the roller and move it away from the bridge tower, thereby preventing the driving member two from colliding with a part of the support seat extending from the side wall of the bridge tower when the large-volume cast-in-place bracket is driven under the roller.

[0017] Optionally, baffles opposite to the side surfaces of the mounting seat are arranged on the saddle frame at both ends of the groove 2, and buffers are arranged on the baffles, and the buffers abut against the side surfaces of the mounting seat.

[0018] By adopting the above technical solution, baffles are set on both sides of groove two to prevent the mounting seat from detaching from the two ends of groove two under the drive of driving member three and the reel, and buffer members are set on the side of the baffle close to the mounting seat to prevent the mounting seat from moving too fast and colliding with the baffle, thereby causing damage to the saddle frame.

[0019] Optionally, clamping members are provided on both sides of the second roller at the bottom of the mounting seat, and the clamping members abut against the side surfaces of the second roller.

[0020] By adopting the above technical solution, after the mounting seat is moved to a suitable position, the second roller on the mounting seat is clamped by a tightening member to prevent the mounting seat from moving on the cable saddle frame and causing the large-volume cast-in-place bracket at the bottom of the mounting seat pulled by the steel cable to collide with the bridge tower and cause an accident.

[0021] Optionally, a construction method for overall removal of a large-volume cast-in-place bracket of an upper crossbeam comprises the following steps: Use a tower crane to lift bracket one and bracket two, connect and fix them to the side walls of the two main towers, set support seats at the bottom of bracket one and bracket and connect them to the side walls of the main towers, then lift bracket three and connect them to bracket one and bracket two to form a large-volume cast-in-place bracket, and cast the upper beam; After the upper crossbeam is cast, the large-volume cast-in-place bracket is removed from the side walls of the two main towers. The upper crossbeam begins to bear force to support the two main towers, and the large-volume cast-in-place bracket is slowly pushed out along the support seat of the side wall of the main tower. The cable saddle frame at the top of the main tower lowers the steel cable to connect with the large-volume cast-in-place bracket. Every time the large-volume cast-in-place bracket is pushed out a part, the steel cable on the cable saddle frame is connected with the large-volume cast-in-place bracket until the large-volume cast-in-place bracket is completely pushed out; Then the saddle frame slowly lowers the large cast-in-place support to the ground.

[0022] Optional, the removal of large-volume cast-in-place supports is divided into the following steps: A fixing block is installed on the side wall of the main tower, a detachable fixing plate is provided on one side of the fixing block, and a fixing piece is passed through the fixing holes on the fixing block, the fixing plate and the two brackets to connect the bracket one and the bracket two to the side walls of the two main towers; After the upper beam is cast, the wooden formwork of the upper beam is removed, and the fixing plate on the side of the fixing block is removed, so that the large-volume cast-in-place bracket can be moved along the direction of the fixing piece until the large-volume cast-in-place bracket is completely separated from the fixing groove in the fixing block; A roller 1 is provided at the bottom of the large-volume cast-in-place bracket to contact the support seat. After the fixing plate is removed from the fixing block, a driving member 1 is provided on the support seat on the side of the large-volume cast-in-place bracket. The driving member 1 is used to push the large-volume cast-in-place bracket outward along the support seat little by little. After the large-volume cast-in-place bracket is pushed out of the travel of the driving member 1, the driving member 1 is removed and installed again on the support seat on the side of the large-volume cast-in-place bracket to push the large-volume cast-in-place bracket to move outward. After the large-volume cast-in-place bracket is partially pushed out, the steel cables on the rollers at the bottom of the mounting seats on the two cable saddles are connected to the large-volume cast-in-place bracket. After the large-volume cast-in-place bracket is pushed out, the steel cables are continued to be connected to the large-volume cast-in-place bracket until the large-volume cast-in-place bracket is completely pushed out by the driving member. Driving member 2 on the mounting seat drives the reel to rotate, and reels the steel cable connected to the large-volume cast-in-place bracket, so that the large-volume cast-in-place bracket is lifted from the supporting seat. Driving member 3 on the cable saddle frame drives reel 1 to rotate. At the same time, reel 3 rotates relative to reel 2, and reel 1 releases the pull rope. The pull rope is wound around reel 2 once and then reel 3, so that the pull rope pulls the mounting seat on the cable saddle frame away from the main tower until the large-volume cast-in-place bracket is completely separated from the supporting seat. Then driving member 2 drives the reel to slowly release the steel cable, so that the large-volume cast-in-place bracket slowly falls to the ground.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: 1. After the upper crossbeam is cast, the large-volume cast-in-place bracket is separated from the connecting structure, and the driving mechanism is used to drive the large-volume cast-in-place bracket to move toward the end of the support seat extending out of the main tower, and then the steel cable connected to the winding structure on the cable saddle frame is connected to the large-volume cast-in-place bracket. The large-volume cast-in-place bracket is lifted from the support seat by the winding mechanism and then lowered to the ground, so that the large-volume cast-in-place bracket can be quickly disassembled on the ground, shortening the construction period; 2. Use a fixing block to fix the large-volume cast-in-place bracket, and set a detachable fixing plate on the side of the fixing block so that the large-volume cast-in-place bracket can be separated from the fixing block, so that the large-volume cast-in-place bracket composed of brackets 1, 2 and 3 can be completely separated from the side wall of the main tower, and use a driving member 1 to slowly move the large-volume cast-in-place bracket to the bottom of the cable saddle frame extending out of the bridge tower, and use a steel cable to pull the large-volume cast-in-place bracket, and use a driving member 2 to drive the roller to slowly tighten the steel cable, so that the large-volume cast-in-place bracket will not fall off the support seat after being pushed out by the driving member 1, so as to prevent the large-volume cast-in-place bracket from falling off the support seat after being pushed out for a certain distance, causing an accident; 3. A driving member three is arranged on the cable saddle frame, and the driving member three is used to drive the reels one and three to move relative to each other, and the reel one and the mounting seat are connected by a pull rope. After the pull rope is connected to the mounting seat, it is wound around the reel two and connected to the reel three, so that the pull rope drives the reel one to rotate when the driving member three drives the mounting seat to move back and forth on the cable saddle frame, so that the mounting seat can pull the large-volume cast-in-place bracket through the roller and move it away from the bridge tower, thereby preventing the driving member two from colliding with a part of the support seat extending from the side wall of the bridge tower when the large-volume cast-in-place bracket is driven under the driving roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an overall schematic diagram of the overall dismantling structure of the large-volume cast-in-place support of the upper crossbeam.

[0025] Figure 2 make Figure 1 A partial enlarged view of middle A.

[0026] Figure 3 It is a partial cross-sectional view of the overall dismantling structure of the large-volume cast-in-place support of the upper beam.

[0027] Figure 4 yes Figure 2 A partial enlarged view of B.

[0028] Figure 5 yes Figure 2 A partial enlarged view of C in the middle.

[0029] In the figure, 1, bridge tower; 11, main tower; 12, temporary cross brace; 13, upper cross beam; 2, large volume cast-in-place bracket; 21, bracket 1; 22, bracket 2; 23, bracket 3; 24, jack; 25, distribution beam; 26, Bailey beam; 27, roller 1; 3, upper cross beam wooden form; 4, fixing block; 41, fixing groove; 42, fixing plate; 43, fixing piece; 44, fixing hole; 5, supporting structure; 51, supporting frame; 52, supporting seat; 521, groove 1 ; 6. Driving mechanism one; 61. Driving member one; 62. Support plate; 7. Saddle frame; 71. Groove two; 72. Baffle; 721. Buffer; 8. Winding mechanism; 81. Mounting seat; 811. Roller two; 82. Driving member two; 83. Connecting plate; 84. Roller; 85. Steel cable; 9. Driving mechanism two; 91. Driving member three; 92. Reel one; 93. Reel two; 94. Reel three; 95. Pull rope; 96. Locking block; 10. Clamping member. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1 -Attached Figure 4 , further details of this application are given.

[0031] Embodiment 1 A complete dismantling structure and construction method of a large-volume cast-in-place bracket for an upper crossbeam, referring to Figure 1 and Figure 2, including a bridge tower 1, the bridge tower 1 includes two main towers 11, a temporary cross brace 12 is fixed between the two main towers 11 through a climbing cone pre-buried in the side wall of the main tower 11, a climbing cone is pre-buried in the side wall of the bridge tower 1 and connected to a support frame 51, the top of the support frame 51 is fixedly connected to a support seat 52 with bolts, a fixing block 4 is fixed to the side of the main tower 11 through a climbing cone on the side of the two main towers 11, a fixing groove 41 is opened on the fixing block 4, a bracket 1 21 and a bracket 2 22 of a large-volume cast-in-place bracket 2 are against the fixing groove 41 of the fixing block 4, a fixing plate 42 is connected to the end of the fixing block 4 away from the fixing groove 41, and the fixing plate 42 is fixed through the climbing cone pre-buried on the side wall of the main tower 11 and the side of the fixing block 4 The slot is movably connected to the fixed block 4. When necessary, the fixed plate 42 is disconnected from the climbing cone and pulled out from the rubbing groove on the side of the fixed block 4. Interconnected fixing holes 44 are opened on the fixed plate 42, the fixed block 4 and the bracket 1 21 and the bracket 2 22. The fixing member 43 is a large pin. The fixing member 43 is passed through the fixing hole 44 to fix the bracket 1 21 and the bracket 2 22 to form a large-volume cast-in-place bracket 2. The bracket 3 23 is connected to the bracket 1 21 and the bracket 2 22 by high-strength bolts. The jack 24 is bolted to the top of the bracket 1 21, the bracket 22 and the bracket 3 23. The distribution beam 25, the Bailey beam 26 and the upper beam wooden formwork 3 are lifted by the jack 24 to cast the upper beam 13.

[0032] Reference Figures 1 to 4 Two support frames 51 are connected below the fixed block 4 through climbing cones pre-buried in the side walls of the two main towers 11, and a support seat 52 is connected to the support frame 51 by bolts. A groove 521 is provided on the support seat 52, and a roller 27 is provided at the bottom of the bracket 21 and the bracket 22. The roller 27 has a fixing frame that is rotatably connected to the roller 27 through a bearing, and the fixing frame is connected to the bracket 21 and the bracket 22 by bolts. The roller 27 fits in the groove 521, and several large pin holes are provided on the support seat 52 at intervals. The support plate 62 is fixed by the large fixing pins. It is connected to the support seat 52, and a driving member 61 is fixed on the support plate 62 with bolts. The driving member 61 is a hydraulic cylinder. The hydraulic rod of the hydraulic cylinder is against one side of the large-volume cast-in-place support 2. The hydraulic cylinder pushes the large-volume cast-in-place support 2 toward the support seat 52 and extends one end of the bridge tower 1. When the stroke of the hydraulic cylinder is completed, the support plate 62 and the hydraulic cylinder are removed and installed again on the mounting seat 81 on the side of the large-volume cast-in-place support 2. The hydraulic rod of the hydraulic cylinder is against the large-volume cast-in-place support 2, and the large-volume cast-in-place support 2 continues to be pushed, and the steel cable 85 is used to pull the large-volume cast-in-place support 2.

[0033] Reference Figures 1 to 5A cable saddle frame 7 is installed on the top of the two main towers 11 with high-strength bolts. A mounting seat 81 is provided on the top of the cable saddle frame 7. Two ends of the mounting seat 81 are rotatably connected with rollers 811 through bearings. Two grooves 71 are provided on the top of the cable saddle frame 7, so that the rollers 811 can roll in the grooves 71 to drive the mounting seat 81 to move. A driving member 82 is bolted to the mounting seat 81. The driving member 82 includes a motor, which is electrically connected to the control system and the power supply. Connecting plates 83 are welded at both ends below the mounting seat 81. A winding roller 84 is rotatably connected to the connecting plate 83 through bearings. The winding roller 84 is driven to rotate by gear meshing with a driving rod of the driving member 82, and the winding roller 84 is used to reel in the steel cable 85.

[0034] Reference Figures 1 to 5 , install the driving member 3 91 on the cable saddle frame 7 with bolts, and the reel 1 92 and the reel 3 94 are rotatably connected with the cable saddle frame 7. The driving member 3 91 is a motor, and the motor is electrically connected with the power supply and the control system. The driving rod of the motor is engaged with the reel 1 92 and the reel 3 94 through gears to drive the reel 1 92 and the reel 3 94 to rotate relative to each other. The reel 1 92 is connected with a pull rope 95, and the pull rope 95 is connected and fixed with a locking block 96 on the side of the connecting plate 83. The locking block 96 is fixed to the side of the connecting plate 83 with bolts, and the pull rope 95 is fixed between the connecting plate 83 and the locking block 96. The end of the cable saddle frame 7 away from the driving member 3 91 is rotatably connected with the reel 2 93 through a bearing. The pull rope 95 extends from the mounting seat 81, passes through the reel 2 93, and is connected with the reel 3 94, so that the mounting seat 81 moves on the cable saddle frame 7 following the pull rope 95. Reference Figures 1 to 5 At both ends of the saddle frame 7, baffles 72 are connected with high-strength bolts to block the mounting seat 81. A buffer 721 is installed on the baffle 72. The buffer 721 is a buffer spring to slow down the speed of the mounting seat 81 rushing toward the baffle 72. A clamping member 10 is bolted to the bottom of the mounting seat 81. The clamping member 10 includes a clamping claw and a hydraulic cylinder driving the clamping claw. The clamping claw is rotatably connected to the mounting seat 81. After the mounting seat 81 reaches the specified position, the driving rod of the hydraulic cylinder drives the clamping claw to clamp the second roller 811 to limit the position of the mounting seat 81, so that the roller 84 below the mounting seat 81 can smoothly lift the large-volume cast-in-place bracket 2.

[0035] Embodiment 2 S100, using a tower crane to lift bracket 1 21 and bracket 22, connect and fix them to the side walls of the two main towers 11, set a support seat 52 at the bottom of bracket 1 21 and the bracket to connect to the side walls of the main tower 11, then lift bracket 3 23 and connect it to bracket 1 21 and bracket 22 to form a large-volume cast-in-place bracket 2, install a jack 24 on the large-volume cast-in-place bracket 2, lift the distribution beam 25, Bailey beam 26 and the upper beam wooden form 3, and cast the upper beam 13; S110, a fixing block 4 is installed on the side wall of the main tower 11, a detachable fixing plate 42 is provided on one side of the fixing block, and a fixing member 43 is passed through the fixing holes 44 on the fixing block 4, the fixing plate 42, the bracket 1 21 and the bracket 2 22 to connect the bracket 1 21 and the bracket 2 22 to the side walls of the two main towers 11; S200, after the upper crossbeam 13 is cast, the upper crossbeam wooden formwork 3 is removed, and the large-volume cast-in-place bracket 2 is removed from the side walls of the two main towers 11, the upper crossbeam 13 begins to bear force to support the two main towers 11, and the large-volume cast-in-place bracket 2 is slowly pushed out along the support seat 52 of the side wall of the main tower 11; S210, after the upper beam 13 is cast, the jack 24 lowers the distribution beam 25, the Bailey beam 26 and the wooden form of the upper beam 13 as a whole, so that the upper beam 13 is demoulded from the wooden form of the upper beam 13, and the wooden form of the upper beam 13 is removed from the Bailey beam 26. After the upper beam 13 is cast, the fixing plate 42 on the side of the fixing block 4 is removed, so that the large-volume cast-in-place bracket 2 can move along the direction of the fixing piece 43 until the large-volume cast-in-place bracket 2 is completely separated from the fixing groove 41 in the fixing block 4; S220, a roller 27 is provided at the bottom of the large-volume cast-in-place bracket 2 to contact the support seat 52. After the fixing plate 42 is removed from the fixing block 4, a driving member 61 is provided on the side wall of the large-volume cast-in-place bracket 2. The driving member 61 is used to push the large-volume cast-in-place bracket 2 outward along the support seat 52 little by little. After the large-volume cast-in-place bracket 2 is pushed out of the travel of the driving member 61, the driving member 61 is removed, and the side wall of the large-volume cast-in-place bracket 2 is installed again to push the large-volume cast-in-place bracket 2 to move outward; S300, the cable saddle frame 7 at the top of the main tower 11 lowers the drawstring 95 to connect with the large-volume cast-in-place bracket 2, and the drawstring 95 on the cable saddle frame 7 is connected with the large-volume cast-in-place bracket 2 every time the large-volume cast-in-place bracket 2 is pushed out, until the large-volume cast-in-place bracket 2 is completely pushed out; S310, after the large-volume cast-in-place support 2 is partially pushed out, the steel cable 85 on the roller 84 at the bottom of the mounting seat 81 on the cable saddle frame 7 on the top of the two main towers 11 is connected to the large-volume cast-in-place support 2, and after the large-volume cast-in-place support 2 is pushed out, the steel cable 85 is continued to be connected to the large-volume cast-in-place support 2 until the large-volume cast-in-place support 2 is completely pushed out by the driving member 1 61; S320, the driving member 2 82 on the mounting seat 81 drives the reel 84 to rotate, and reels the steel cable 85 connected to the large-volume cast-in-place bracket 2, so that the large-volume cast-in-place bracket 2 is lifted from the support seat 52, and the driving member 3 91 on the cable saddle frame 7 drives the reel 1 92 to rotate, so that the reel 3 94 and the reel 2 93 rotate relative to each other, so that the pull rope 95 connected to the reel 1 92 and the reel 3 94 pulls the mounting seat 81 on the cable saddle frame 7 away from the main tower 11 until the large-volume cast-in-place bracket 2 is completely separated from the support seat 52, and then the driving member 2 82 drives the reel 84 to slowly release the steel cable 85, so that the large-volume cast-in-place bracket 2 slowly falls to the ground.

[0036] S400, then the saddle frame 7 slowly puts the large-volume cast-in-place bracket 2 on the ground.

[0037] The implementation principle of the embodiment of the present application is: After the upper beam 13 is cast, the top rod of the jack 24 is retracted, and the distribution beam 25, Bailey beam 26 and the wooden form of the upper beam 13 are lowered to demould the upper beam 13, and then the wooden form of the upper beam 13 is removed. The fixing plate 42 on the side of the fixing block 4 supported by the bottom of the large-volume cast-in-place bracket 2 is removed, so that the large-volume cast-in-place bracket 2 is separated from the side wall of the main tower 11 and contacts the support seat 52 through the roller 1 27, and the upper beam 13 starts to support the main tower 11. Install the support plate 62 and the driving member 61 on the support seat 52, and use the driving member 61 to slowly push the large-volume cast-in-place bracket 2 to move toward the end of the bridge tower 1 extending out of the support seat 52. After the large-volume cast-in-place bracket 2 moves a certain distance, tie the steel cables 85 on the two saddle frames 7 to the large-volume cast-in-place bracket 2, and use the driving member 2 82 to drive the roller 84 to tighten the steel cables 85. Remove the support plate 62 and the driving member 61 and reinstall them, and continue to push the large-volume cast-in-place bracket 2. After the large-volume cast-in-place bracket 2 is pushed out a certain distance, the saddle frame 7 puts down the next steel cable 85 and connects it to the large-volume cast-in-place bracket 2 until the large-volume cast-in-place bracket 2 is completely pushed out.

[0038] Driving member 2 82 drives roller 84 to reel in steel cable 85, and after lifting the large-volume cast-in-place bracket 2 upward for a distance and separating it from the supporting seat 52, driving member 3 91 on the saddle frame 7 drives reel 1 92 and reel 3 94 to rotate relative to each other, and moves the mounting seat 81 and the bottom roller 84 toward the end of the saddle frame 7 extending out of the bridge tower 1, so that the large-volume cast-in-place bracket 2 is away from the bridge tower 1, and then driving member 2 82 drives roller 84 to lower the steel cable 85, and put the large-volume cast-in-place bracket 2 on the ground, which is then dismantled by workers, shortening the construction period.

[0039] 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 integrally dismantling a large-volume cast-in-place bracket of an upper cross beam, comprising a bridge tower (1), wherein the bridge tower (1) comprises two main towers (11), and a temporary cross brace (12) is arranged between the two main towers (11), characterized in that: A large-volume cast-in-place bracket (2) is arranged between the side walls of the two main towers (11) above the temporary cross brace (12); an upper crossbeam wooden formwork (3) is arranged on the top of the large-volume cast-in-place bracket (2); support structures (5) are arranged at both ends of the bottom of the large-volume cast-in-place bracket (2) that contact the side walls of the two main towers (11); the two support structures (5) are connected to the side walls of the two main towers (11); a driving mechanism (6) is arranged on the support structure (5); the driving mechanism (6) drives the large-volume cast-in-place bracket (2) to move on the support structure (5); a cable saddle frame (7) is arranged on the top of the two main towers (11); a winding mechanism (8) is arranged on the cable saddle frame (7); a steel cable (85) is connected between the winding mechanism (8) and the large-volume cast-in-place bracket (2).

2. The overall dismantling structure of the large-volume cast-in-place bracket of the upper cross beam according to claim 1 is characterized in that: The large-volume cast-in-place bracket (2) comprises a bracket 1 (21) and a bracket 2 (22), a fixing block (4) is arranged on the side walls of the two main towers (11), a fixing groove (41) is provided on the fixing block (4), a detachable fixing plate (42) is arranged at one end of the fixing block (4) away from the fixing groove (41), the bracket 1 (21) and the bracket 2 (22) are abutted against the fixing groove (41) on the corresponding fixing block (4), and the fixing plate (42), the fixing groove (41) and the fixing plate (42) are arranged on the fixing groove (41) of the fixing block (4). 41) and two brackets are provided with interconnected fixing holes (44), a fixing member (43) is inserted into the fixing hole (44), a bracket three (23) is connected between the bracket one (21) and the bracket two (22), the supporting structure (5) comprises a supporting frame (51) and a supporting seat (52), the supporting frame (51) is connected to the side wall of the main tower (11) below the large-volume cast-in-place bracket (2), and the top of the supporting seat (52) is against the large-volume cast-in-place bracket (2).

3. The overall dismantling structure of the large-volume cast-in-place bracket of the upper cross beam according to claim 2 is characterized in that: The driving mechanism (6) comprises a driving member (61) and a support plate (62); the support plate (62) is detachably connected to the support seat (52); a driving rod of the driving member (61) abuts against a side of the large-volume cast-in-place bracket (2) away from the fixed plate (42); the driving member (61) is connected to the support plate (62); a groove (521) is provided on the support seat (52); a roller (27) is provided at the bottom of the large-volume cast-in-place bracket (2) near the two support seats (52); and the roller (27) is in contact with the inner wall of the groove (521).

4. The structure for integrally dismantling a large-volume cast-in-place bracket for an upper crossbeam according to claim 1 is characterized in that: The winding mechanism (8) comprises a mounting seat (81), a second driving member (82) and a winding roller (84); the mounting seat (81) is arranged on the cable saddle frame (7); the second driving member (82) is connected to the mounting seat (81); connecting plates (83) are arranged at both ends of the second driving member (82); the connecting plates (83) are connected to the mounting seat (81); the winding roller (84) is rotatably connected to the connecting plates (83); the driving shaft of the second driving member (82) drives the winding roller (84) to rotate and wind up the steel cable (85).

5. The structure for integrally dismantling a large-volume cast-in-place bracket for an upper crossbeam according to claim 4 is characterized in that: A second groove (71) is arranged on the top of the saddle frame (7), and two rollers (811) are rotatably arranged at both ends of the mounting seat (81), and the second rollers (811) roll in the second groove (71).

6. The structure for integrally dismantling a large-volume cast-in-place bracket for an upper cross beam according to claim 4, characterized in that: A driving mechanism 2 (9) is arranged at one end of the cable saddle frame (7) away from the mounting seat (81), and the driving mechanism 2 (9) comprises a driving member 3 (91) and a reel 1 (92), wherein the driving member 3 (91) is connected to the cable saddle frame (7), and the reel 1 (92) is rotationally connected to the cable saddle frame (7), and the reel 1 (92) is connected to a driving rod of the driving member 3 (91), and a pull rope (95) is connected to the reel 1 (92). A locking block (96) is provided on the side of the connecting plate (83); a reel 2 (93) is rotatably provided on the saddle frame (7) at one end close to the winding mechanism (8); a driving rod of the driving member 3 (91) is connected to a reel 3 (94); the reel 3 (94) rotates relative to the reel 1 (92); the pull rope (95) is fixed to the connecting plate (83) by the locking block (96) and then passes around the reel 2 (93) and is wound on the reel 3 (94).

7. The structure for integrally dismantling a large-volume cast-in-place bracket for an upper cross beam according to claim 5, characterized in that: At both ends of the second groove (71), baffles (72) are arranged on the saddle frame (7) and are opposite to the side surfaces of the mounting seat (81). A buffer (721) is arranged on the baffle (72), and the buffer (721) abuts against the side surfaces of the mounting seat (81).

8. The structure for integrally dismantling a large-volume cast-in-place bracket for an upper cross beam according to claim 5, characterized in that: The bottom of the mounting seat (81) is provided with clamping members (10) on both sides of the second roller (811), and the clamping members (10) abut against the side surfaces of the second roller (811).

9. A construction method for overall removal of a large-volume cast-in-place bracket of an upper crossbeam, characterized in that: The invention comprises the overall dismantling structure of the large-volume cast-in-place bracket (2) of the upper cross beam (13) as claimed in any one of claims 1 to 8, S100, using a tower crane to hoist bracket one (21) and bracket two (22), connect and fix them to the side walls of the two main towers (11), set a support seat (52) at the bottom of bracket one (21) and the bracket to connect to the side walls of the main tower (11), then hoist bracket three (23) and connect it to bracket one (21) and bracket two (22), form a large-volume cast-in-place bracket (2), and cast the upper crossbeam (13); S200, after the upper cross beam (13) is cast, the large-volume cast-in-place bracket (2) is removed from the side walls of the two main towers (11), the upper cross beam (13) begins to bear force to support the two main towers (11), and the large-volume cast-in-place bracket (2) is slowly pushed out along the support seat (52) of the side wall of the main tower (11); S300, the cable saddle frame (7) at the top of the main tower (11) lowers the steel cable (85) to connect with the large-volume cast-in-place support (2), and each time the large-volume cast-in-place support (2) is pushed out a portion, the steel cable (85) on the cable saddle frame (7) is connected with the large-volume cast-in-place support (2) until the large-volume cast-in-place support (2) is completely pushed out; S400, then the saddle frame (7) slowly places the large-volume cast-in-place support (2) on the ground.

10. A method for integrally dismantling a large-volume cast-in-place bracket of an upper crossbeam according to claim 9, characterized in that: S110, a fixing block (4) is installed on the side wall of the main tower (11), a detachable fixing plate (42) is provided on one side of the fixing block, and a fixing member (43) is passed through the fixing block (4), the fixing plate (42) and the fixing holes (44) on the two brackets to connect the bracket 1 (21) and the bracket 2 (22) to the side walls of the two main towers (11); S210, after the upper cross beam (13) is cast, the wooden form of the upper cross beam (13) is removed, and the fixing plate (42) on the side of the fixing block (4) is removed, so that the large-volume cast-in-place bracket (2) can move along the direction of the fixing member (43) until the large-volume cast-in-place bracket (2) is completely separated from the fixing groove (41) in the fixing block (4); S220, a roller (27) is provided at the bottom of the large-volume cast-in-place bracket (2) and contacts the support seat (52). After the fixing plate (42) is removed from the fixing block (4), a driving member (61) is provided on the support seat (52) on the side of the large-volume cast-in-place bracket (2). The driving member (61) is used to push the large-volume cast-in-place bracket (2) outward along the support seat (52) little by little. After the large-volume cast-in-place bracket (2) is pushed out of the travel of the driving member (61), the driving member (61) is removed and installed again on the support seat (52) on the side of the large-volume cast-in-place bracket (2), so as to push the large-volume cast-in-place bracket (2) to move outward; S310, after the large-volume cast-in-place support (2) is partially pushed out, the steel cable (85) on the roller (84) at the bottom of the mounting seat (81) on the two cable saddles (7) is connected to the large-volume cast-in-place support (2), and after the large-volume cast-in-place support (2) is pushed out, the steel cable (85) is continued to be connected to the large-volume cast-in-place support (2) until the large-volume cast-in-place support (2) is completely pushed out by the driving member 1 (61); S320, the driving member 2 (82) on the mounting seat (81) drives the reel (84) to rotate, and reels the steel cable (85) connected to the large-volume cast-in-place bracket (2), so that the large-volume cast-in-place bracket (2) is lifted from the supporting seat (52), and the driving member 3 (91) on the cable saddle frame (7) drives the reel 1 (92) to rotate, and at the same time, the reel 3 (94) and the reel 2 (93) rotate relative to each other, and the reel 1 (92) releases the pull rope (93). 5), the pull rope (95) is wound around the second reel (93) for one circle and then reeled up by the third reel (94), so that the pull rope (95) pulls the mounting seat (81) on the saddle frame (7) to move away from the main tower (11) until the large-volume cast-in-place support (2) is completely separated from the support seat (52), and then the second driving member (82) drives the reel (84) to slowly release the steel rope (85), so that the large-volume cast-in-place support (2) slowly falls to the ground.

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