A wet joint formwork installation and disassembly system and installation and disassembly construction method

Abstract

A wet joint formwork installation and removal system and an installation and removal construction method, comprising a plurality of formwork devices, and also comprising a lifting device and a traction system, wherein the lifting device comprises a first lifting device and a second lifting device, and the traction system comprises a first traction rope which is controlled by the first lifting device to be reeled in and the free end of which can be connected to the back of the formwork device, a second traction rope which is controlled by the second lifting device to be reeled in and the free end of which can be connected to the front of the formwork device, and a plurality of third traction ropes, one end of which can be respectively connected to the back of the formwork device and the other end of which can be respectively connected to the bridge deck. The installation or removal of all formwork devices can be completed by combining the lifting device with the traction system, thereby saving labor costs and social resources, making the construction intelligent, reducing the difficulty of construction organization, accelerating the construction speed, and improving the construction efficiency. Even under difficult conditions such as high pier bridges or deep gullies, rivers, and traffic lines under the bridge, normal construction can be carried out, thereby ensuring construction quality and safety.

Description

Technical Field

[0001] The invention relates to a wet joint template installation and disassembly system and an installation and disassembly construction method. Background Art

[0002] Bridges play a very important role in today's transportation. Precast beam bridges are currently the most widely used bridge structure. Beams and slabs can be standardized and industrialized in the prefabrication yard. After the beams and slabs are installed, adjacent beams and slabs are connected by cast-in-place wet joints.

[0003] During wet joint construction, the formwork is fixed on the lower side of the beam-slab wing plate. In traditional methods, construction workers need to work together on the bridge deck and the ground. The up-and-down cross-operation takes a long time during construction, which poses a great safety risk. The formwork transportation workload is large, and the construction progress is slow. The shortcomings and disadvantages of traditional construction methods are particularly prominent in difficult conditions such as high-pier bridges or bridges with deep gullies, rivers, and traffic lines at the bottom. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a wet joint formwork installation and disassembly system.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a wet joint formwork installation and disassembly system, including a plurality of formwork devices for installation at the wet joints of bridge slabs, and also including a lifting device and a traction system, the lifting device including a first lifting device arranged at the edge of the bridge surface and capable of moving forward and braking relative to the bridge surface, a second lifting device arranged above the wet joint of the bridge slab and capable of moving forward and braking relative to the bridge surface, the traction system including a first traction rope which is controlled by the first lifting device to be wound and released and the free end of which can be connected to the back of the formwork device, a second traction rope which is controlled by the second lifting device to be wound and released and the free end of which can be connected to the front of the formwork device, and multiple third traction ropes whose one end can be connected to the corresponding back of the formwork device and the other end can be connected to the bridge deck respectively.

[0006] In some embodiments, the wet joint formwork installation and disassembly system also includes an auxiliary rope used to loop around the corresponding beam plate to transfer the free end of the second traction rope to the bridge deck where the first traction rope is hanging. The auxiliary rope is a closed loop rope, with at least two ropes, which are respectively looped around the corresponding bridge plates.

[0007] In certain embodiments, the template device includes a template body, a front lifting ring arranged on the front side of the template body and for connecting the free end of the second traction rope, a back lifting ring arranged on the back side of the template body and for connecting the free ends of the first traction rope and the third traction rope, and a template fixing device capable of fixing the template body below the wet joint, and the front lifting ring outer shell is provided with a detachable lifting ring cover.

[0008] In certain embodiments, the formwork fixing device includes a clamp that spans the wet joint of the bridge slab and has both ends mounted on the bridge deck, and a tie rod connected between the clamp and the formwork body, the tie rod is detachably connected to at least one of the clamp and the formwork body, and a detachable tie rod sheath is provided on the tie rod.

[0009] In some embodiments, the template body is embedded with an embedded nut for threaded connection to the lower end of the tie rod, the upper end of the tie rod is provided with a fixing nut, the tie rod is inserted downward into the through hole of the fixture, and a tie rod gasket is provided between the fixing nut and the fixture.

[0010] In certain embodiments, the first lifting device includes a first traveling wheel frame, an oblique hanger rotatable along a plumb axis and arranged on the first traveling wheel frame, a first winch arranged on the oblique hanger, and a counterweight block arranged on the first traveling wheel frame, and the first traction rope is a first winch wire rope hanging down from the top of the oblique hanger; the second lifting device includes a second traveling wheel frame, a second winch fixed on the second traveling wheel frame, and the second traction rope is a second winch wire rope hanging down from the second winch towards the wet joint.

[0011] In some embodiments, the number of the third traction ropes corresponds to the number of the template devices.

[0012] Another technical problem to be solved by the present invention is to provide an installation and construction method for a wet joint formwork installation and disassembly system.

[0013] In order to solve the above technical problems, the technical solution adopted by the present invention is: an installation and construction method of a wet joint formwork installation and disassembly system, which specifically comprises the following steps:

[0014] S11, positioning the first lifting equipment to the edge of the bridge face, and positioning the second lifting equipment above the wet joint;

[0015] S12, passing the free end of the second traction rope downward through the wet joint to the outer side of the bridge face edge;

[0016] S13, the free end of the first traction rope is connected to the back of the template device, the free end of the second traction rope is connected to the front of the template device, one end of the third traction rope is connected to the lifting ring on the back of the template device, and the other end is fixed to the bridge deck;

[0017] S14, start the first lifting device to move the formwork device to the outside of the bridge face edge by the first traction rope and then lower it to the bottom of the bridge slab, start the second lifting device to lift the formwork device to the wet joint of the bridge slab by the second traction rope, detach the free end of the first traction rope from the formwork device and temporarily fix it to the front end of the formwork device;

[0018] S15, fix the template device relative to the bridge plate, move the second lifting device forward to the installation position of the next template device, then disconnect the free end of the second traction rope from the front of the template device and connect it to the free end of the first traction rope, start the first lifting device to move forward and pull the free end of the second traction rope to the outside of the bridge face edge;

[0019] S16. Repeat steps S13-S15 until the second lifting equipment moves to the target installation position, and the installation of all formwork devices is completed.

[0020] In certain embodiments, in step 2, the free end of the second traction rope is sequentially connected to an auxiliary rope pre-installed on the corresponding bridge deck, and the auxiliary rope is sequentially moved to transfer the free end of the second traction rope from the lower side of the bridge deck to the outer side of the bridge face edge.

[0021] Another technical problem to be solved by the present invention is to provide a dismantling construction method for a wet joint formwork installation and dismantling system.

[0022] In order to solve the above technical problems, the technical solution adopted by the present invention is: a dismantling construction method of a wet joint formwork installation and dismantling system, which specifically comprises the following steps:

[0023] S21, disconnecting the other end of the third traction rope from the bridge deck and then connecting it to the free end of the first traction rope;

[0024] S22, dismantle the template device relative to the bridge slab, start the second lifting device to move the template device down to the bottom of the bridge slab by the second traction rope, start the first lifting device to lift the template device to the outside of the bridge face edge and retreat, and retract the template device and the corresponding third traction rope;

[0025] S23, start the second hoisting device to retract the second traction rope and retreat to the next template device installation position, and then connect the free end of the second traction rope to the front of the corresponding template device;

[0026] S24, repeat steps S21-S23 until the second lifting device retreats to the bottom, completing the removal of all formwork devices.

[0027] The scope of the present invention is not limited to the technical solutions formed by a specific combination of the above technical features, but also includes other technical solutions formed by any combination of the above technical features or their equivalent features. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in this application.

[0028] Due to the application of the above technical scheme, the present invention has the following advantages compared with the prior art: the present invention provides a wet joint formwork installation and disassembly system and installation and disassembly construction method with a high degree of automation, which can mainly complete the installation or disassembly of all formwork devices through lifting equipment combined with a traction system, saving labor costs and social resources, intelligent construction, reducing the difficulty of construction organization, accelerating construction speed, improving construction efficiency, shortening construction period, and can also be carried out normally under difficult conditions such as high pier bridges or deep gullies, rivers, traffic lines, etc. under the bridge, thereby ensuring construction quality and the safety of construction personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Attached Figure 1 It is a schematic diagram of the structure of the present invention;

[0030] Attached Figure 2 This is a schematic diagram of the auxiliary rope transmitting the second traction rope;

[0031] Attached Figure 3 This is a schematic diagram of the template lowering during the installation of the wet joint template;

[0032] Attached Figure 4 This is a schematic diagram of the formwork lifting during the installation of the wet joint formwork;

[0033] Attached Figure 5 This is a schematic diagram of the completed installation of the wet joint template;

[0034] Attached Figure 6 It is a schematic diagram of the wet joint formwork removal process;

[0035] Attached Figure 7 It is a schematic diagram of the structure of the template fixing device;

[0036] Among them: 1. Formwork device; 11. Formwork body; 12. Front lifting ring; 13. Back lifting ring; 14. Formwork fixing device; 141. Clamp; 142. Tie rod; 143. Tie rod cover;

[0037] 2. First hoisting equipment; 21. First traveling wheel frame; 22. Inclined hanger; 23. First winch; 24. Counterweight;

[0038] 3. Second hoisting equipment; 31. Second traveling wheel frame; 32. Second winch;

[0039] 4. First traction rope; 5. Second traction rope; 6. Third traction rope; 7. Auxiliary rope. DETAILED DESCRIPTION

[0040] As shown in the accompanying drawings, the present invention provides a wet joint template installation and removal system, which first includes a plurality of template devices 1 for installation at the wet joints of bridge slabs, the template device 1 includes a template body 11, a front lifting ring 12 arranged on the front of the template body 11, and a back lifting ring 13 arranged on the back of the template body 11. In this embodiment, the template body 11 is made of bamboo plywood and square wood. The system also includes a lifting device and a traction system. The lifting device includes a first lifting device 2 arranged at the edge of the bridge surface and capable of moving forward and braking relative to the bridge surface, and a second lifting device arranged above the wet joint of the bridge slab and capable of moving forward and braking relative to the bridge surface. 3. The traction system includes a first traction rope 4, a second traction rope 5, and a third traction rope 6. The first traction rope 4 is controlled by the first lifting device 2 for winding and releasing, and the free end of the first traction rope 4, that is, the lower end, can be connected to the back lifting ring 13 on the back of the formwork device 1. The second traction rope 5 is controlled by the second lifting device 3 for winding and releasing, and the free end of the second traction rope 5, that is, the lower end, can be connected to the front lifting ring 12 on the front of the formwork device 1. There are multiple third traction ropes 6, and the number of the third traction ropes 6 corresponds to the number of the formwork devices 1. One end of the third traction rope 6 can be connected to the back lifting ring 13 on the back of the formwork device 1, and the other end can be connected to the bridge deck.

[0041] The free end of the first traction rope 4, the free end of the second traction rope 5 and both ends of the third traction rope 6 are all provided with portable buckles.

[0042] The wet joint formwork installation and disassembly system also includes an auxiliary rope 7, which is a closed loop rope, with at least two ropes. The actual number of ropes depends on the number of bridge plates, and is respectively set on two corresponding adjacent bridge plates. Figure 1-2 As shown, the auxiliary rope 7 is used to transfer the free end of the second traction rope 5 to the bridge deck where the first traction rope 4 hangs down.

[0043] When the formwork device 1 is transferred to the wet joint to be poured, Figure 5 As shown, the template device 1 needs to be fixed. The present application adopts a template fixing device 14, which can fix the template body 11 below the wet joint. The front ring 12 is provided with a detachable ring sheath to facilitate the passage of the second traction rope 5. In this embodiment, the ring sheath is made of PVC material.

[0044] like Figure 7As shown, the formwork fixing device 14 includes a clamp 141 that spans the wet joint of the bridge slab and has both ends mounted on the bridge deck, and a tie rod 142 that is connected between the clamp 141 and the formwork body 11. The tie rod 142 is detachably connected to at least one of the clamp 141 and the formwork body 11. A detachable tie rod sheath 143 is provided on the tie rod 142. The tie rod 142 can move freely in the tie rod sheath 143. The clamp 141 is in an arch shape with both ends sunken and the middle part arched. It can span the wet joint and be firmly supported on the bridge deck. In this embodiment, the tie rod sheath 143 is a PVC pipe.

[0045] The width of the template body 11 is greater than the wet joint width. The template body 11 is embedded with an embedded nut for threaded connection to the lower end of the tie rod 142. The free end of the tie rod 142 can be tightened and reinforced with the embedded nut. The upper end of the tie rod 142 is provided with a fixing nut. The tie rod 142 is inserted downward into the through hole of the clamp 141, and a tie rod gasket is provided between the fixing nut and the clamp 141.

[0046] like Figure 1 As shown, the first lifting device 2 includes a first traveling wheel frame 21, an inclined hanger 22 rotatably arranged on the first traveling wheel frame 21 along a plumb axis, a first winch 23 arranged on the inclined hanger 22, and a counterweight 24 arranged on the first traveling wheel frame 21. The first traction rope 4 is a steel wire rope of the first winch 23 hanging down from the top of the inclined hanger 22. The inclined hanger 22 can transport the template device 1 at other positions to a position where the first traction rope 4 and the third traction rope 6 can be connected, so that transportation is more convenient. The second lifting device 3 includes a second traveling wheel frame 31, a second winch 32 fixed on the second traveling wheel frame 31, and the second traction rope 5 is a steel wire rope of the second winch 32 hanging down from the second winch 32 facing the wet joint.

[0047] The installation and construction method of this application, such as Figure 3-5 , specifically including the following steps:

[0048] 1. Position the first lifting device to the edge of the bridge face and the second lifting device above the wet joint;

[0049] 2. If Figure 3 As shown, the free end of the second traction rope is sequentially connected to the auxiliary rope pre-set on the corresponding bridge deck, and the auxiliary rope is sequentially moved to transfer the free end of the second traction rope from the lower side of the bridge deck to the outer side of the bridge face edge;

[0050] 3. The free end of the first traction rope is connected to the back lifting ring on the back of the template device, the free end of the second traction rope is connected to the front lifting ring on the front of the template device, one end of the third traction rope is connected to the back lifting ring of the template device, and the other end is fixed to the bridge deck, such as Figure 3 As shown;

[0051] 4. Start the first lifting device and use the first traction rope to move the template device to the outside of the bridge face edge and then lower it to the bottom of the bridge slab. Start the second lifting device and use the second traction rope to lift the template device to the wet joint of the bridge slab. Disconnect the free end of the first traction rope from the template device and temporarily fix it to the front end of the template device. Figure 4 As shown, at this time, the free end of the third traction rope moves with the formwork device to the wet joint of the bridge slab to play a protective role;

[0052] 5. Fix the formwork device relative to the bridge plate, move the second lifting device forward to the installation position of the next formwork device, then disconnect the free end of the second traction rope from the front of the formwork device and connect it to the free end of the first traction rope, start the first lifting device to move forward and pull the free end of the second traction rope to the outside of the bridge face edge;

[0053] 6. Repeat steps 3-5 until the second lifting device moves to the target installation position, and the installation of all formwork devices 1 is completed.

[0054] Before construction, the formwork device can be polished and cleaned, and a release agent can be applied on it to facilitate the subsequent removal of the formwork device.

[0055] The status after installation: one end of all the third traction ropes are connected to the back of the corresponding formwork body, and the other end of all the third traction ropes are connected to the outer side of the edge of the bridge surface, the free end of the first traction rope can hang freely, and the free end of the second traction rope is connected to the front of the last formwork device.

[0056] The demolition construction method of the present application starts from the last template device and dismantles backwards in sequence, such as Figure 6 , specifically including the following steps:

[0057] 1. Disconnect the other end of the third traction rope from the bridge deck and then connect it to the free end of the first traction rope;

[0058] 2. Disassemble the template device relative to the bridge slab, start the second lifting device to move the template device down to the bottom of the bridge slab by the second traction rope, start the first lifting device to lift the template device to the outside of the bridge face edge and retreat, and retract the template device and the corresponding third traction rope;

[0059] 3. Start the second lifting device to retract the second traction rope and retreat to the next template device installation position, and then connect the free end of the second traction rope to the front of the corresponding template device;

[0060] 4. Repeat steps 1-3 until the second lifting device is retracted to the bottom, completing the removal of all formwork devices.

[0061] The removed formwork device is polished and cleaned, and other wet joints can be constructed in a cyclic manner.

[0062] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A wet joint formwork installation and removal system, comprising a plurality of formwork devices (1) for installation at wet joints of bridge slabs, characterized in that: The traction system also includes a lifting device and a traction system, wherein the lifting device includes a first lifting device (2) arranged at the edge of the bridge surface and capable of moving relative to the bridge surface and braking, and a second lifting device (3) arranged above the wet joint of the bridge slab and capable of moving relative to the bridge surface and braking. The traction system includes a first traction rope (4) which is controlled by the first lifting device (2) to be wound and unwound and the free end of which can be connected to the back of the template device (1), a second traction rope (5) which is controlled by the second lifting device (3) to be wound and unwound and the free end of which can be connected to the front of the template device (1), A plurality of third traction ropes (6) each having one end capable of being connected to the back of the corresponding template device (1) and the other end capable of being connected to the bridge deck. The wet joint template installation and disassembly system also includes an auxiliary rope (7) for being looped on the corresponding beam plate to transfer the free end of the second traction rope (5) to the bridge deck where the first traction rope (4) hangs down. The auxiliary rope (7) is a closed loop rope having at least two ropes, which are respectively looped on the corresponding bridge deck. The template device (1) includes a template body (11), a third traction rope (6) arranged on the front of the template body (11) and for the first traction rope (4) to be connected to the bridge deck. a front lifting ring (12) to which the free ends of the second traction ropes (5) are connected, a back lifting ring (13) arranged on the back of the template body (11) and for connecting the free ends of the first traction rope (4) and the third traction rope (6), and a template fixing device (14) capable of fixing the template body (11) below the wet joint, the front lifting ring (12) being provided with a detachable lifting ring sheath on its outer cover, the first lifting device (2) comprising a first walking wheel frame (21), and an inclined hanging frame (22) rotatably arranged on the first walking wheel frame (21) along a plumb axis. , a first hoist (23) arranged on the inclined hanger (22), a counterweight (24) arranged on the first traveling wheel frame (21), the first traction rope (4) being a steel wire rope of the first hoist (23) hanging downward from the top of the inclined hanger (22); the second lifting equipment (3) comprising a second traveling wheel frame (31), a second hoist (32) fixed on the second traveling wheel frame (31), the second traction rope (5) being a steel wire rope of the second hoist (32) hanging downward from the second hoist (32) facing the wet joint.

2. The wet joint formwork installation and removal system according to claim 1 is characterized in that: The template fixing device (14) comprises a clamp (141) spanning the wet joint of the bridge slab and with both ends mounted on the bridge deck, and a tie rod (142) connected between the clamp (141) and the template body (11), wherein the tie rod (142) is detachably connected to at least one of the clamp (141) and the template body (11), and a detachable tie rod sheath (143) is provided on the tie rod (142).

3. The wet joint formwork installation and removal system according to claim 2 is characterized in that: The template body (11) is embedded with an embedded nut for threaded connection to the lower end of the tie rod (142), the upper end of the tie rod (142) is provided with a fixing nut, the tie rod (142) is inserted downward into the through hole of the clamp (141), and a tie rod gasket is provided between the fixing nut and the clamp (141).

4. The wet joint formwork installation and removal system according to claim 1, characterized in that: The number of the third traction ropes (6) corresponds to the number of the template devices (1).

5. An installation and construction method for the wet joint formwork installation and disassembly system according to any one of claims 1 to 4, characterized in that: The specific steps include: S11, positioning the first lifting device (2) to the edge of the bridge face, and positioning the second lifting device (3) above the wet joint; S12, passing the free end of the second traction rope (5) downward through the wet joint to the outer side of the bridge face; S13, the free end of the first traction rope (4) is connected to the back of the template device (1), the free end of the second traction rope (5) is connected to the front of the template device (1), one end of the third traction rope (6) is connected to the lifting ring on the back of the template device (1), and the other end is fixed to the bridge deck; S14, starting the first lifting device (2) to move the template device (1) to the outside of the bridge face edge by the first traction rope (4) and then lowering it to the bottom of the bridge slab, starting the second lifting device (3) to lift the template device (1) to the wet joint of the bridge slab by the second traction rope (5), detaching the free end of the first traction rope (4) from the template device (1) and temporarily fixing it to the front end of the template device (1); S15, fix the template device (1) relative to the bridge plate, move the second lifting device (3) forward to the installation position of the next template device (1), then disconnect the free end of the second traction rope (5) from the front of the template device (1) and connect it to the free end of the first traction rope (4), start the first lifting device (2) to move forward and pull the free end of the second traction rope (5) to the outside of the bridge face edge; S16. Repeat steps S13-S15 until the second lifting device (3) moves forward to the target installation position, completing the installation of all the formwork devices (1).

6. The installation and construction method of the wet joint formwork installation and removal system according to claim 5 is characterized in that: In step (2), the free end of the second traction rope (5) is sequentially connected to the auxiliary rope (7) pre-installed on the corresponding bridge deck, and the auxiliary rope (7) is sequentially moved to transfer the free end of the second traction rope (5) from the lower side of the bridge deck to the outer side of the bridge face edge.

7. The installation and construction method of the wet joint formwork installation and removal system according to claim 5 is characterized by: It also includes a demolition construction method, which specifically includes the following steps: S21, detaching the other end of the third traction rope (6) from the bridge deck and then connecting it to the free end of the first traction rope (4); S22, disassembling the template device (1) relative to the bridge slab, starting the second lifting device (3) to move the template device (1) down to the bottom of the bridge slab by the second traction rope (5), starting the first lifting device (2) to lift the template device (1) to the outside of the bridge face edge and retreat, and retracting the template device (1) and the corresponding third traction rope (6); S23, starting the second lifting device (3), retracting the second traction rope (5) and retreating to the installation position of the next template device (1), and then connecting the free end of the second traction rope (5) to the front of the corresponding template device (1); S24, repeating steps S21-S23 until the second lifting device (3) is retracted to the bottom, and the removal of all the formwork devices (1) is completed.

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