Quick demolition system for overpass

Abstract

The application provides a kind of cross-line bridge quick dismantling system, including multiple dismantling equipment, dismantling equipment adopts track jacking mobile dismantling structure, dismantling equipment is arranged on flat car, flat car is equipped with hydraulic pump station and generator, hydraulic pump station and generator are connected with dismantling equipment. Also provided is a crane, which is used to assemble the dismantling equipment. Also provided are multiple cushions and support expansion foundations; the support expansion foundations are made of cement pouring or precast cement piers; the cushions are made of precast cement piers or wooden pier seats; the multiple dismantling equipment is electrically connected with a control center, which controls the synchronous movement of the track carrier of the dismantling equipment. By adopting a modular support design, standard modules and adjusting blocks can be installed according to the height of the overpass to meet the construction requirements, and can be quickly disassembled and assembled on site. Since the dismantling process does not interrupt traffic, traffic congestion caused by construction can be avoided. Vehicles and pedestrians can continue to pass through the bridge and will not be affected by the construction.

Description

Technical Field

[0001] This invention relates to the field of bridge foundation construction technology, and in particular to a rapid demolition system for overpass bridges. Background Technology

[0002] With the rapid development of the economy and society, highway travel has become a daily mode of transportation for people. The highways built in the early stages have successively experienced insufficient traffic capacity and declining service levels, making it difficult to meet the needs of transportation development.

[0003] As the reconstruction and expansion projects progress, existing overpasses and grade-separated interchanges will face issues such as demolition, relocation, or reconstruction. Currently, the main methods for demolishing existing overpasses include blasting, direct excavation, crane relocation, bridge deck crane demolition, overall lowering demolition, and SPMT rapid demolition. These methods suffer from significant impact on existing roads, high investment costs, numerous auxiliary equipment, and large site requirements. They generally require road closures for construction, severely impacting existing traffic flow. None of these methods can achieve rapid demolition of overpasses without disrupting traffic. Summary of the Invention

[0004] The main objective of this invention is to provide a rapid overpass demolition system that addresses the problem that overpass demolition typically requires road closures, severely impacting existing traffic flow. This system also solves the problem of failing to achieve rapid overpass demolition without disrupting traffic.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a rapid demolition system for overpass bridges, including multiple demolition devices. The demolition devices adopt a tracked lifting and moving demolition structure. The demolition devices are mounted on a flatbed truck, which is equipped with a hydraulic pump station and a generator. The hydraulic pump station and the generator are connected to the demolition devices.

[0006] In the preferred embodiment, a crane is also provided for assembling and dismantling equipment, as well as multiple pads and supporting expanded foundations; The expanded foundation is supported by concrete pouring or the placement of precast concrete piers; The pillow pads are made of precast cement blocks or wooden blocks; In the preferred embodiment, multiple demolition devices are electrically connected to the control center, and the control center controls the tracked transport equipment of the demolition devices to move synchronously.

[0007] In the preferred embodiment, at least two tracked transport devices are provided above the support module, a bottom support module is provided below the support module, support feet are provided at both ends of the bottom support module, the support feet are threadedly connected to the bottom support module, and nuts are provided on the support feet, a support plate is provided at the lower end of the support feet, and a hydraulic jack is provided on the inner side of the support feet.

[0008] The upper part of the support module is equipped with a longitudinal beam, and the tracked transport equipment is installed on the longitudinal beam.

[0009] In the preferred embodiment, the tracked conveying equipment includes a frame, drive rollers at both ends of the frame, the ends of the drive rollers being connected to a drive device, a track wrapped around the two drive rollers, the inner surface of the track in the middle being in contact with the frame, and base feet on both sides of the frame.

[0010] In the preferred embodiment, a lifting hydraulic cylinder is provided at the lower end of the machine base foot, and the lower end of the lifting hydraulic cylinder is connected to the longitudinal beam.

[0011] In the preferred embodiment, the track surface is bonded with rubber material.

[0012] In the preferred embodiment, multiple crossbeams are provided at the lower end of the longitudinal beam, and an adjustable block that can be raised and lowered is provided between the lower surface of the crossbeams and the upper end of the support module.

[0013] In the preferred embodiment, the support module includes multiple vertically arranged columns, which are connected by horizontal bars and diagonal braces to form an integral structure. The bottom support module extends out from both sides of the support module, and the top of the support module is hinged to the end of the bottom support module via an adjustable support rod.

[0014] In the preferred embodiment, the two ends of the adjustable support rod are hinged to the ends of the top and bottom support modules of the support module. The adjustable support rod is a hydraulic cylinder or a screw and sleeve support rod.

[0015] The ends of the two screws are hinged to the ends of the top and bottom support modules of the support module, respectively, and the screw sleeve is threaded to the ends of the two screws. The bottom support module is also equipped with a horizontal limiting device at one end. One end of the horizontal limiting device is hinged to one end of the bottom support module, and the other end is used to connect with the support expansion foundation. The horizontal limiting device is a hydraulic cylinder or a screw and sleeve connection structure; The ends of the two screws are respectively hinged to one end of the expansion foundation and the bottom support module, and the screw sleeve is threaded to the ends of the two screws.

[0016] This invention provides a rapid dismantling system for overpasses. Utilizing a modular support design, standard modules and adjustable blocks are installed according to the overpass height to meet construction requirements, allowing for rapid on-site assembly and disassembly. Because the dismantling process does not interrupt traffic, it avoids traffic congestion caused by construction. Vehicles and pedestrians can continue to travel on the bridge without being affected by construction. The rapid dismantling method can complete the dismantling work in a short time, avoiding the time and cost waste caused by prolonged overpass closures. The rapid dismantling method uses advanced equipment and processes, ensuring the safety of the dismantling process and reducing potential risks to personnel and property. This rapid overpass dismantling method, without interrupting traffic, not only ensures smooth traffic flow and improves construction efficiency but also ensures safety, environmental protection, energy conservation, and resource reuse.

[0017] Rapid demolition methods reduce rubble and environmental pollution. Furthermore, this method saves energy and aligns with green construction principles. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a front view installation structure diagram of the dismantling equipment of the present invention; Figure 2 This is a left-side view of the installation structure of the dismantling equipment of this invention; Figure 3 This is a structural diagram of the tracked transport equipment layout and installation of the present invention; Figure 4 This is a structural diagram of the track layout of the tracked transport device of the present invention; Figure 5 This is a left-side view of the track structure of the tracked transport device of the present invention; Figure 6 This is a schematic diagram of the preliminary preparation for dismantling according to the present invention; Figure 7 This is a schematic diagram showing the completed installation of the dismantling equipment according to the present invention; Figure 8 This is a schematic diagram of the initial jacking and dismantling of the box girder using the dismantling equipment of this invention; Figure 9 This is a schematic diagram showing the completion of the jacking and dismantling of the box girder using the dismantling equipment of this invention; Figure 10 This is a schematic diagram of the removal of the box girder counterweight of the present invention; Figure 11 This is a schematic diagram of the installation and dismantling equipment for the multi-span simply supported beam overpass of the present invention; Figure 12 This is a schematic diagram of the preliminary demolition of the multi-span simply supported beam overpass of the present invention; Figure 13 This is a schematic diagram showing the completed demolition of the multi-span simply supported beam overpass of the present invention.

[0019] In the diagram: 1. Box girder; 2. Tracked transport equipment; 201. Lifting hydraulic cylinder; 202. Track; 203. Frame; 204. Base foot; 3. Longitudinal beam; 4. Crossbeam; 5. Adjusting block; 6. Support module; 7. Adjustable support rod; 8. Bottom support module; 9. Hydraulic jack; 10. Support foot; 11. Pad; 12. Flatbed; 13. Support expansion foundation; 14. Embedded frame; 15. Horizontal limit device; 16. Hydraulic pump station; 17. Generator; 18. First guide beam; 19. Retaining wall; 20. Crane; 21. Counterweight; 22. Second guide beam; 23. Support base; 24. Demolition equipment A; Demolition equipment B; Demolition equipment C; Demolition equipment D; Tracked transport equipment F. Detailed Implementation

[0020] Example 1 like Figures 1-13 As shown, a rapid dismantling device for an overpass bridge includes a support module 6 with at least two tracked transport devices 2 above it, a bottom support module 8 below it, and support feet 10 at both ends of the bottom support module 8. The support feet 10 are threadedly connected to the bottom support module 8 and have nuts on them. A support plate is located at the lower end of each support foot 10, and a hydraulic jack 9 is located on the inner side of each support foot 10. A longitudinal beam 3 is located at the upper end of the support module 6, and the tracked transport devices 2 are mounted on the longitudinal beam 3. The support module 6 is installed on the bottom support module 8, and the tracked transport devices 2 are installed on the upper part of the support module 6. The tracked transport devices 2 are used to lift and move the box girder 1 for dismantling. Rapid dismantling and assembly can be performed on-site. Since the dismantling process does not interrupt traffic, traffic congestion caused by construction can be avoided. Vehicles and pedestrians can continue to travel on the bridge without being affected by construction.

[0021] In the preferred embodiment, the tracked conveying device 2 includes a frame 203 with drive rollers at both ends. The ends of the drive rollers are connected to a drive device. A track 202 is wound around the two drive rollers, and the inner surface of the track 202 is in contact with the frame 203. The frame 203 also has mounting feet 204 on both sides. The track 202 is driven by an electric motor or a hydraulic rotary machine.

[0022] In the preferred embodiment, a lifting hydraulic cylinder 201 is provided at the lower end of the machine base foot 204, and the lower end of the lifting hydraulic cylinder 201 is connected to the longitudinal beam 3. The lifting hydraulic cylinder 201 lifts the entire box girder 1.

[0023] In the preferred embodiment, the surface of the track 202 is coated with rubber material. The rubber material serves to absorb shock.

[0024] In the preferred embodiment, multiple crossbeams 4 are provided at the lower end of the longitudinal beam 3, and a liftable adjusting block 5 is provided between the lower surface of the crossbeam 4 and the upper end of the support module 6. The adjusting block 5 is a fixed-size block, or it can be a hydraulic lifting structure.

[0025] In the preferred embodiment, the support module 6 includes multiple vertically arranged columns, which are connected by horizontal and diagonal braces to form an integral structure. The bottom support module 8 extends from both sides of the support module 6, and the top of the support module 6 is hinged to the end of the bottom support module 8 via an adjustable support rod 7. The support module 6 is prefabricated in the factory, typically as a single integral structure for easy transportation and assembly.

[0026] In the preferred embodiment, the adjustable support rod 7 is hinged at both ends to the top and bottom support modules 8 of the support module 6. The adjustable support rod 7 is a hydraulic cylinder, or a screw and threaded sleeve support rod. This enhances the overall structure and strength.

[0027] The ends of the two screws are hinged to the top and bottom ends of the support module 8 of the support module 6, respectively, and the screw sleeve is threaded to the ends of the two screws. The bottom support module 8 is also provided with a horizontal limiting device 15 at one end. One end of the horizontal limiting device 15 is hinged to one end of the bottom support module 8, and the other end is used to connect with the support expansion foundation 13. The horizontal limiting device 15 enhances the overall structural stability.

[0028] The horizontal limiting device 15 is a hydraulic cylinder or a screw and sleeve connection structure; this solution adopts the screw and sleeve connection structure. The ends of the two screws are respectively hinged to one end of the expansion base 13 and the bottom support module 8, and the screw sleeves are threaded to the ends of the two screws.

[0029] Example 2 Further explanation is provided in conjunction with Examples 1-2, such as Figure 1-13 The structure shown indicates the device is used as follows: B1. The construction support for the enlarged foundation 13 near the outer area is carried out by pouring cement or placing precast cement blocks. The pads 11 or precast cement blocks are placed near the roadside. The pads 11 are precast cement blocks or wooden blocks. B2. The factory first manufactures the support module 6 and assembles the bottom support module 8. The bottom support module 8 is placed on the flatbed truck 12. The support module 6 is then hoisted and connected to the bottom support module 8 using a crane and installed. B3. Adjustable support rods 7 are installed between the two ends of the bottom support module 8 and the top of the support module 6, and the screw sleeves of the adjustable support rods 7 are adjusted to reinforce the connection between the two ends of the bottom support module 8 and the top of the support module 6. B4. First, install the adjusting block 5 on the top of the support module 6. The height of the adjusting block 5 is selected according to the construction design requirements. Alternatively, a hydraulic cylinder can be installed to adjust the overall height. Install the crossbeam 4 on the adjusting block 5, and then install multiple longitudinal beams 3 on the crossbeam 4. The longitudinal beams 3 are reinforced and connected together. B5. Use crane 20 to hoist the tracked transport equipment 2 and install it on the longitudinal beam 3. Fix the tracked transport equipment 2 to the longitudinal beam 3. After fixing, use flatbed truck 12 to transport it to the bottom of the box beam 1. Adjust the position of the tracked transport equipment 2. Align the track 202 of the tracked transport equipment 2 with the bottom of the box beam 1. The track 202 of multiple tracked transport equipment 2 can be completely against the bottom of the box beam 1. B6. The hydraulic jack 9 is opened to lift the equipment. The telescopic rod of the hydraulic jack 9 rests on the pad 11 and the support expansion foundation 13. The hydraulic jack 9 lifts the entire demolition equipment and moves it away from the flatbed trolley 12. The support foot 10 is adjusted so that the lower end of the support foot 10 rests on the pad 11 and the support expansion foundation 13. The hydraulic jack 9 is retracted, and the entire demolition equipment falls back onto the pad 11 and the support expansion foundation 13. B7. The end of the bottom support module 8 is connected to the embedded frame 14 on the support expansion foundation 13 through the horizontal limiting device 15, and the horizontal limiting device 15 is tightened and adjusted. B8. The lifting hydraulic cylinder 201 of the tracked transport equipment 2 begins to lift, and the track 202 of the tracked transport equipment 2 rests against the bottom of the box girder 1. The tracked transport equipment 2 keeps the top elevation of the entire box girder 1 within the range of 50-150mm from the bottom surface of the bridge. B9. The track 202 of the tracked transport equipment 2 starts to operate, and the box girder 1 on the rotating track 202 starts to move, and the box girder 1 is moved and dismantled. B10. After the box girder 1 is dismantled, the horizontal limit device 15 is removed. After the hydraulic jack 9 controls the overall rise, the position of the support foot 10 is adjusted, and the entire dismantling equipment is lowered onto the flatbed truck 12. The flatbed truck 12 then transports the entire dismantling equipment to the outside.

[0030] Example 3 Further explanation in conjunction with Example 1, such as Figure 1-13 The structure shown is a rapid demolition system for overpass bridges, which includes multiple demolition devices. The demolition devices adopt a tracked lifting and moving demolition structure. The demolition devices are mounted on a flatbed truck 12, which is equipped with a hydraulic pump station 16 and a generator 17. The hydraulic pump station 16 and the generator 17 are connected to the demolition devices.

[0031] In the preferred embodiment, a crane 20 is also provided, which is used to assemble and dismantle the equipment. Multiple pads 11 and a support enlarged foundation 13 are also provided. The expanded foundation 13 is supported by concrete pouring or by placing precast concrete blocks; Pillow 11 is made of precast cement block or wooden block base; The support for the enlarged foundation 13 is made of cement or precast cement blocks. A pad 11 or a precast cement block is placed near the roadside. The pad 11 is a precast cement block or a wooden block base.

[0032] In the preferred embodiment, multiple demolition devices are electrically connected to the control center, and the control center controls the tracked transport device 2 of the demolition devices to move synchronously.

[0033] Example 3 Further explanation in conjunction with Example 1, such as Figure 1-13 The structure shown is a method for quick demolition without obstructing the road, which includes the following steps: S1, demolish the retaining walls 19 in front of and behind the main beam at the permanent pier, and install the first guide beam 18 at the rear end; Remove the guardrails near the highway at the bridge location and level the site to allow vehicles to enter and exit. The site at the support point of the dismantling equipment was prepared, the construction support was expanded foundation 13, and the bottom support module 8 of the dismantling equipment was transported to the site by flatbed truck 12 and parked outside the bridge to be dismantled. S2. Complete the assembly of the modular brackets for dismantling equipment outside the road, and install the tracked transport equipment 2 to ensure that the top elevation of the tracked transport system is within the required range from the bottom surface of the bridge. S3. Start the flatbed truck 12 to transport the dismantling equipment to the bottom of the beam. The bottom hydraulic jack 9 will lift the dismantling equipment off the flatbed truck 12. The screw of the support leg 10 will be screwed to contact the expanded support foundation 13. The hydraulic jack 9 will retract, transferring the load of the dismantling equipment to the expanded support foundation 13. The horizontal limit device 15 will fix the dismantling equipment. Debugging the tracked transport system; S4. Set the number of demolition equipment according to the length of the overpass. Demolish the box girder 1 and connect it to the support. Start the lifting hydraulic cylinder 201 in the crawler transport equipment 2 of demolition equipment A and demolition equipment B to lift the box girder away from the support. The crawler 202 of the crawler transport equipment 2 moves to push the whole forward until the main beam reaches demolition equipment C. S5. Start the tracked transport equipment 2 of demolition equipment A, demolition equipment B and demolition equipment C, and push them forward as a whole until the tail of the first guide beam 18 is separated from demolition equipment A. S6. Cut and dismantle box girder 1 in sections of 10-12m each; S7. Start the tracked transport equipment 2 of demolition equipment B and demolition equipment C, and push the whole structure forward. Demolish the box girder 1 section by section in 10-12m increments until the overpass and the first guide beam 18 are pushed to the safe area outside the emergency lane. S8. Cut the transport overpass blocks and guide beams to complete the demolition; S9. Dismantle the tracked transport equipment 2 and the standard section of the dismantling equipment, retract the outriggers, and use the flatbed truck 12 to tow the dismantling equipment away from the site. Example 4 Further explanation in conjunction with Example 2, such as Figure 1-13 As shown in the structure, S10, the retaining wall 19 before and after the main beam at the permanent pier is removed, and a counterweight block 21 is loaded at an appropriate position at the front end; the guardrail near the highway at the bridge location is removed, and the site is leveled to allow vehicles to enter and exit. The site at the support point of the dismantling equipment bracket was treated, and the construction support was expanded foundation 13; the flatbed truck 12 transported the bottom support module 8 of the dismantling equipment to the site and parked it outside the bridge to be dismantled. S11, same as S2-S5 in Scheme 1; S12. Start the tracked transport equipment 2 of demolition equipment B and demolition equipment C, push the box girder 1 forward as a whole to the required length, remove the counterweight 21, and demolish the box girder section by section in 10-12m increments. S7. Continue to use the tracked transport equipment 2 of demolition equipment B and demolition equipment C to push the whole thing forward until the box girder 1 is pushed to the safe area outside the emergency lane. S8. Cut one section of the transfer box girder and the guide beam to complete the dismantling; S9. Dismantle the tracked transport equipment 2 and remove the standard sections of the bottom support module 8 of the equipment. Retract the outriggers and use the flatbed truck 12 to tow the bottom sections away from the site.

[0034] Example 5 Further explanation is provided in conjunction with Examples 1-2, such as Figure 1-13 The structure shown, a method for the rapid dismantling of a multi-span simply supported beam overpass without obstructing traffic, includes the following steps: A1. Preparations before demolition: Calculate whether the structural stress during beam segment demolition meets the requirements and whether counterweight is needed; A2. Remove the outer main beams of the permanent piers at both ends, install the second guide beam 22 at the front end, remove the guardrails within ±30m of the highway near the bridge location, remove the support of the permanent pier in the middle of the road, and level the site to allow vehicles to enter and exit. A3. Treat the site at the bottom support module 8 of the demolition equipment, construct the support enlargement foundation 13 on the slope side, and place the pad 11 on the road side to support the entire demolition equipment. A4. Flatbed truck 12 transported the bottom support module 8 of the demolition equipment to the site and parked it outside the bridge to be demolished; Complete the dismantling equipment assembly outside the road, install tracked transport equipment 2, and ensure that the top elevation of tracked transport equipment 2 is within the range of 50-150mm from the bottom surface of the bridge. The flatbed truck 12 transports the support to the bottom of the box girder 1 directly below the beam. The bottom hydraulic jack 9 lifts the dismantled equipment off the flatbed truck. The screw of the support leg 10 is screwed onto the contact support expanded foundation 13 and the pad 11. The hydraulic jack 9 retracts, transferring the support load to the expanded foundation. Install the horizontal limit device 15, fix the dismantled equipment, and debug the tracked transport equipment 2; A5. Construction support base 23 is built on the top of the slope on both sides of the road. The No. 1 tracked transport equipment F is hoisted and assembled on the support base 23. Demolition work was carried out by symmetrically setting up demolition equipment on both sides of the road. A6. Dismantle the connection between box girder 1 and the support, and start the crawler transport equipment 2 of the No. 4 dismantling equipment D on both sides and the No. 1 crawler transport equipment F to begin lifting box girder 1 away from the support. A7. The tracked transport equipment F on both sides and the tracked transport equipment D on both sides, along with the jacking box girder 16m, will push the overpass to the safe area outside the highway guardrail. The transfer bridge blocks were cut and demolished.

[0035] Remove the tracked transport equipment 2 and the standard segment of the bottom support module 8, retract the support legs 10, and use the flatbed truck 12 to tow the bottom segment away from the site.

[0036] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A rapid dismantling system for overpass bridges, characterized in that: It includes multiple demolition devices, which are mounted on a flatbed truck (12). The flatbed truck (12) is equipped with a hydraulic pump station (16) and a generator (17), which are connected to the demolition devices. Multiple demolition devices are electrically connected to the control center, which controls the tracked transport equipment (2) of the demolition devices to move synchronously. At least two tracked conveying devices (2) are provided above the support module (6), and a bottom support module (8) is provided below the support module (6). Support feet (10) are provided at both ends of the bottom support module (8). The support feet (10) are threadedly connected to the bottom support module (8), and nuts are provided on the support feet (10). A support plate is provided at the lower end of the support feet (10), and a hydraulic jack (9) is provided on the inner side of the support feet (10). The upper end of the support module (6) is provided with a longitudinal beam (3), and the tracked transport equipment (2) is set on the longitudinal beam (3); The tracked conveying equipment (2) includes a frame (203), with drive rollers at both ends of the frame (203), the ends of the drive rollers being connected to the drive equipment, and a track (202) wrapped around the two drive rollers. The inner surface of the middle part of the track (202) is in contact with the frame (203), and the frame (203) is also provided with base feet (204) on both sides. The lower end of the machine base foot (204) is provided with a lifting hydraulic cylinder (201), and the lower end of the lifting hydraulic cylinder (201) is connected to the longitudinal beam (3); Multiple crossbeams (4) are provided at the lower end of the longitudinal beam (3), and an adjustable block (5) that can be raised and lowered is provided between the lower surface of the crossbeam (4) and the upper end of the support module (6). The support module (6) includes multiple vertically arranged columns. The multiple vertical columns are connected by horizontal bars and diagonal braces to form an integral structure. The bottom support module (8) extends out of both sides of the support module (6). The top of the support module (6) is hinged to the end of the bottom support module (8) through an adjustable support rod (7).

2. The rapid dismantling system for overpasses according to claim 1, characterized in that: It is also equipped with a crane (20) for assembling and dismantling equipment, and multiple pads (11) and supporting enlarged foundations (13). The expanded foundation (13) is supported by concrete pouring or by placing precast concrete blocks; The pillow (11) is made of precast cement block or wooden block base.

3. The rapid dismantling system for overpasses according to claim 1, characterized in that: The surface of the track (202) is covered with rubber material.

4. The rapid dismantling system for overpasses according to claim 1, characterized in that: The adjustable support rod (7) is hinged at both ends to the top and bottom support modules (8) of the support module (6). The adjustable support rod (7) is a hydraulic cylinder or a screw and sleeve support rod. The ends of the two screws are respectively hinged to the ends of the top and bottom support modules (8) of the support module (6), and the screw sleeve is threaded to the ends of the two screws; The bottom support module (8) is also provided with a horizontal limiting device (15) at one end. One end of the horizontal limiting device (15) is hinged to one end of the bottom support module (8), and the other end is used to connect with the support expansion foundation (13). The horizontal limiting device (15) is a hydraulic cylinder or a screw and sleeve connection structure; The ends of the two screws are respectively hinged to one end of the expansion base (13) and the bottom support module (8), and the screw sleeve is threaded to the ends of the two screws.

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