A method for dismantling bridge piers, cap beams, and tie beams located within the slip zone of a slope, and a construction platform thereof.

Abstract

This invention discloses a method for dismantling bridge piers, cap beams, and tie beams located within the slip zone of a slope, belonging to the technical field of bridge demolition methods. First, the slope is leveled, and concrete steel columns are installed on both sides of the pier columns to be demolished, constructing a construction platform. First, the rubber supports on the upper part of the cap beam are removed using a wire saw, and the upper pad stones are also directly cut and removed using the wire saw. After the cap beam is cut, the height of the construction platform is lowered, and the pier columns on the upper part of the tie beam are cut using the wire saw. After the pier columns on the upper part of the tie beam are cut, the construction platform is lowered further, and workers cut the tie beam using the wire saw. After the tie beam is cut, the construction platform is lowered further to cut the pier columns below the tie beam until all cutting is completed, at which point the construction platform is dismantled. This invention has the advantages of fast demolition speed, safe and reliable demolition method, no need for large demolition equipment, and simultaneous demolition of multiple pier columns.

Description

Technical Field

[0001] This invention belongs to the technical field of bridge demolition methods, and more specifically relates to a method for demolishing bridge piers, cap beams, and tie beams located within the slip zone of a slope. Background Technology

[0002] Bridges are structures used to cross waterways or other obstacles, enabling vehicles, pedestrians, or other modes of transportation to pass safely. The construction of bridges provides modern society with high-speed and convenient transportation. However, in actual use, the piers supporting bridges often shift due to natural disasters, fatigue, or other factors. In such cases, it is necessary to dismantle the piers, the cap beams above them, and the tie beams in the middle of the piers. Current technology typically involves drilling holes in the piers and then cutting them with a cutting machine. This method is not suitable for dismantling large bridge piers, nor can it remove the cap beams above the piers or the tie beams in the middle of the piers.

[0003] Therefore, how to provide a method for dismantling bridge piers, cap beams, and tie beams located within the slip zone of a slope is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the present invention provides a method for dismantling bridge piers, cap beams and tie beams located within the slip zone of a slope. This method has the advantages of fast dismantling speed, safe and reliable dismantling method, no need to use large dismantling equipment, and simultaneous dismantling of multiple bridge pier columns.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A method for dismantling bridge piers, cap beams, and tie beams located within the slip zone of a slope includes the following steps:

[0007] S1. First, level the slope and install concrete steel columns on both sides of the pier columns to be demolished to provide temporary support for the cap beam; after the concrete steel columns are installed, build a construction platform.

[0008] S2. Workers first used a wire saw to remove the rubber supports on the upper part of the cap beam on the construction platform. The upper pad stone was then directly cut and removed with the wire saw. The debris was then transferred to the ground. The cap beam was cut to a thickness of 30cm, with each piece measuring 2.3m. 1.6m The cap beams are cut to a length of 0.3m. The cut cap beams are collected using a collection mechanism and dragged to the outside of the cap beams. They are then transported to the ground by a truck crane.

[0009] S3. After the cap beam is cut, lower the height of the construction platform and use a wire saw to start cutting the pier columns on the upper part of the tie beam. Transfer the cut concrete blocks to the collection mechanism on the construction platform in 30cm thicknesses, and then transport them to the ground by a truck crane.

[0010] S4. After the pier columns on the upper part of the tie beam are cut, the construction platform continues to be lowered. The construction workers use a wire saw to cut the tie beam to a thickness of 30cm. The cut concrete blocks are collected by a collection mechanism and transported to the ground by a truck crane.

[0011] S5. After the tie beam is cut, the construction platform continues to lower its height to cut the pier columns under the tie beam. The pier columns under the tie beam are cut layer by layer with a thickness of 30cm and collected. The construction platform is then dismantled after all the cutting is completed.

[0012] Furthermore, the construction platform includes: a base plate, a hydraulic telescopic rod A, a rotating rod A, a rotating rod B, and a top plate; the hydraulic telescopic rod A is installed on the base plate, one end of the rotating rod A is rotatably connected to the base plate and the other end is rotatably connected to the top plate, one end of the rotating rod B is rotatably connected to the base plate and the other end is rotatably connected to the top plate, one side of the rotating rod A is rotatably connected to one side of the rotating rod B, the output end of the hydraulic telescopic rod A is rotatably connected to a groove opened on the rotating rod A, and the collecting mechanism is installed on the top plate.

[0013] Furthermore, a rotating plate is rotatably connected to one side of the top plate at intervals, and a vertical plate is rotatably connected to the bottom of the top plate at intervals. A hydraulic telescopic rod B is installed inside the vertical plate. The output end of the hydraulic telescopic rod B is connected to a slider A. The slider A is rotatably connected to one end of a support rod, and the other end of the support rod is rotatably connected to the slider B. The slider B is slidably connected to the bottom of the rotating plate.

[0014] Furthermore, the collection mechanism includes: a manual hydraulic trolley, a hydraulic cylinder, a material tray, and a waste hopper; both the top plate and the rotating plate are provided with track grooves, the hydraulic trolley is rotatably connected to the top plate through the track grooves, the hydraulic trolley is equipped with a hydraulic cylinder, the output end of the hydraulic cylinder is connected to the material tray, and the waste hopper is placed inside the material tray.

[0015] Furthermore, when cutting the cap beam, the wedge-shaped part at the left end of the cap beam is cut first, and the cut concrete block is transferred to the waste hopper. Then, the waste hopper is transferred to the ground by a truck crane. The concrete block is cut to a thickness of 30cm, and the cutting is carried out from both sides towards the middle.

[0016] The beneficial effects of this invention are as follows:

[0017] This invention features a simple structure and is easy to use. First, the slope is leveled. Then, concrete steel columns are installed on both sides of the pier columns to be demolished, providing temporary support for the cap beam. After the concrete steel columns are installed, a construction platform is erected. Workers on the platform first use a wire saw to remove the rubber supports on the upper part of the cap beam. The upper pad stones are also directly cut and removed using the wire saw. The debris is then transferred to the ground. The cap beam is cut to a thickness of 30cm, with each piece measuring 2.3m. 1.6m The cap beam is cut to a 0.3m diameter. The cut sections are collected using a collection mechanism and towed to the outside of the cap beam, then transported to the ground by a truck crane. After the cap beam is cut, the construction platform is lowered, and wire saws are used to cut the upper pier columns of the tie beam. Concrete blocks are transferred to the collection mechanism on the construction platform in 30cm thickness sections and then transported to the ground by a truck crane. After the upper pier columns of the tie beam are cut, the construction platform is lowered further, and workers use wire saws to cut the tie beam to a thickness of 30cm. The cut concrete blocks are also collected using the collection mechanism and transported to the ground by a truck crane. After the tie beam is cut, the construction platform is lowered further to cut the lower pier columns of the tie beam, cutting them layer by layer in 30cm thickness sections and collecting the cut sections. This process continues until all sections are cut, at which point the construction platform is dismantled. This invention offers advantages such as fast demolition speed, safe and reliable demolition method, no need for large demolition equipment, and simultaneous demolition of multiple pier columns. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the front of the construction platform of the present invention.

[0020] Figure 2 This is a schematic diagram of the structure of the top of the construction platform of the present invention.

[0021] Figure 3 This is a schematic diagram of the rotating plate of the present invention.

[0022] Figure 4 This is a schematic diagram of the collection mechanism of the present invention.

[0023] Figure 5 This is a schematic diagram showing the distribution of the bridge piers, cap beams, and tie beams of the present invention.

[0024] In the figure:

[0025] 1-Base plate; 2-Hydraulic telescopic rod A; 3-Rotating rod A; 4-Rotating rod B; 5-Top plate; 6-Rotating plate; 7-Upright plate; 8-Hydraulic telescopic rod B; 9-Slider A; 10-Support rod; 11-Slider B; 12-Track groove; 13-Manual hydraulic trolley; 14-Oil cylinder; 15-Material tray; 16-Waste hopper. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Please see the appendix Figure 1-5 This invention provides a method for dismantling bridge piers, cap beams, and tie beams located within the slip zone of a slope, comprising the following steps:

[0028] S1. First, level the slope and install concrete steel columns on both sides of the pier columns to be demolished to provide temporary support for the cap beam. After the concrete steel columns are installed, build a construction platform. To ensure the stability of the construction platform, the leveled slope should be hardened. Steel tie beams can also be installed between multiple concrete steel columns to strengthen the support.

[0029] S2. Workers first used a wire saw to remove the rubber supports on the upper part of the cap beam on the construction platform. The upper pad stone was also directly cut and removed with a wire saw. The debris was then transferred to the ground. The cap beam was cut to a thickness of 30cm, with each piece measuring 2.3m. 1.6m The concrete cap beams are cut to a length of 0.3m. The cut cap beams are collected using a collection mechanism and dragged to the outside of the cap beams. They are then transported to the ground by a truck crane. The rubber supports and pad stones on the top of the concrete cap beams are cleaned up. After the construction waste is transferred to the ground, the cap beams are dismantled.

[0030] S3. After the cap beam is cut, lower the height of the construction platform and use a wire saw to start cutting the pier columns on the upper part of the tie beam. Transfer the cut concrete blocks to the collection mechanism on the construction platform in 30cm thicknesses, and then transport them to the ground by a truck crane.

[0031] S4. After the pier columns on the upper part of the tie beam are cut, the construction platform continues to be lowered. The construction workers use a wire saw to cut the tie beam to a thickness of 30cm. The cut concrete blocks are collected by a collection mechanism and transported to the ground by a truck crane. If the block diameter is too large after cutting, it can be cut into smaller pieces from the middle part.

[0032] S5. After the tie beam is cut, the construction platform continues to lower its height to cut the pier columns under the tie beam. The pier columns under the tie beam are cut layer by layer with a thickness of 30cm and collected. The construction platform is then dismantled after all the cutting is completed.

[0033] The construction platform includes: a base plate 1, a hydraulic telescopic rod A2, a rotating rod A3, a rotating rod B4, and a top plate 5. The hydraulic telescopic rod A2 is mounted on the base plate 1. One end of the rotating rod A3 is rotatably connected to the base plate 1, and the other end is rotatably connected to the top plate 5. One end of the rotating rod B4 is rotatably connected to the base plate 1, and the other end is rotatably connected to the top plate 5. One side of the rotating rod A3 is rotatably connected to one side of the rotating rod B4. The output end of the hydraulic telescopic rod A2 is rotatably connected to a groove on the rotating rod A3. The collection mechanism is mounted on the top plate 5. The top plate 5 extends laterally to the outside of the bridge, allowing space for the truck crane to lift the demolition debris to the ground for cleaning off the site. Simultaneously, the construction platform also serves as a platform for placing the demolition equipment and facilitating movement of personnel. After the concrete cap beam is demolished, all loose debris on the platform is promptly cleaned up.

[0034] A rotating plate 6 is rotatably connected to one side of the top plate 5 at intervals, and a vertical plate 7 is rotatably connected to the bottom of the top plate 5 at intervals. A hydraulic telescopic rod B8 is installed inside the vertical plate 7. The output end of the hydraulic telescopic rod B8 is connected to a slider A9. The slider A9 is rotatably connected to one end of a support rod 10, and the other end of the support rod 10 is rotatably connected to a slider B11. The slider B11 is slidably connected to the bottom of the rotating plate 6. Due to the limited space between the bridge pier columns, the crane cannot raise the hook into the column. To solve the space limitation problem, this invention uses a rotating plate 6, which is rotatably connected between two adjacent bridge pier columns. Guardrails can also be installed around the top plate 5 to ensure the safety of construction personnel.

[0035] The collection mechanism includes: a manual hydraulic trolley 13, a hydraulic cylinder 14, a material tray 15, and a waste hopper 16; both the top plate 5 and the rotating plate 6 are provided with track grooves 12, the hydraulic trolley 13 is rotatably connected to the top plate 5 through the track grooves 12, the hydraulic cylinder 14 is installed on the hydraulic trolley 13, the output end of the hydraulic cylinder 14 is connected to the material tray 15, the waste hopper 16 is placed in the material tray 15, and the height of the waste hopper 16 is adjusted by the hydraulic cylinder 14 to prevent the cut concrete blocks from bouncing to the ground and causing danger due to the large drop.

[0036] When cutting the cap beam, first cut the wedge-shaped part at the left end of the cap beam. Transfer the cut concrete blocks to the waste hopper 16, and then use a truck crane to move the waste hopper 16 to the ground. The concrete blocks are cut to a thickness of 30cm, and the cutting is carried out from both sides towards the middle. Because the wedge-shaped cap beam is located at a high position, temporary supports can be made on site to ensure construction safety.

[0037] This invention has a simple structure. First, the slope is leveled, and concrete steel columns are installed on both sides of the pier columns to be demolished to provide temporary support for the cap beam. After the concrete steel columns are installed, a construction platform is built. To ensure the stability of the construction platform, the leveled slope should be hardened. Steel tie beams can also be installed between multiple concrete steel columns to strengthen the support. At this time, the rotating plate 6 is located between two adjacent pier columns. The hydraulic telescopic rod A is activated to raise the top plate 5 until the waste hopper 16 is close enough to the cap beam. Workers on the construction platform first use a wire saw to remove the rubber supports on the upper part of the cap beam. The upper pad stones are also directly cut and removed with a wire saw. The waste falls into the waste hopper. The manual hydraulic trolley 13 is pulled out, and the waste hopper 16 is lifted to the ground by a truck crane for transfer. The cap beam is cut to a thickness of 30cm, with each piece measuring 2.3m. 1.6m The cap beams are cut to a length of 0.3m. The cut cap beams are collected in waste hopper 16 and dragged to the outside of the cap beams. They are then transported to the ground by a truck crane. The rubber supports and pad stones on the top of the concrete cap beams are cleaned up. After the construction waste is transferred to the ground, the cap beams are dismantled. After the cap beam is cut, the height of the construction platform is lowered, and the upper pier columns of the tie beam are cut using a wire saw. The cut concrete blocks are transferred to the waste hopper 16 on the construction platform in 30cm thicknesses and then transported to the ground by a truck crane. After the upper pier columns of the tie beam are cut, the construction platform is lowered again, and the construction workers cut the tie beam with a wire saw to a thickness of 30cm. The cut concrete blocks are collected by a collection mechanism and transported to the ground by a truck crane. If the diameter of the cut blocks is too large, they can be further cut into smaller pieces from the middle. After the tie beam is cut, the construction platform is lowered again to cut the lower pier columns of the tie beam. The lower pier columns of the tie beam are cut layer by layer in 30cm thicknesses and collected. The cutting is continued until all the cutting is completed, and the construction platform is dismantled. This invention has the advantages of fast dismantling speed, safe and reliable dismantling method, no need for large dismantling equipment, and simultaneous dismantling of multiple pier columns.

[0038] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0039] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A construction platform for the demolition of a bridge pier, a bent cap and a tie beam located within the scope of slope slip soil, characterized in that the construction platform comprises a base plate (1), a hydraulic telescopic rod A (2), a rotating rod A (3), a rotating rod B (4) and a top plate (5); the top plate (5) extends laterally to the outside of the bridge, the hydraulic telescopic rod A (2) is installed on the base plate (1), one end of the rotating rod A (3) is rollingly connected with the base plate (1) and the other end is rotatably connected with the top plate (5), one end of the rotating rod B (4) is rotatably connected with the base plate (1) and the other end is rollingly connected with the top plate (5), one side of the rotating rod A (3) is rotatably connected with one side of the rotating rod B (4), the output end of the hydraulic telescopic rod A (2) is rollingly connected with a sliding groove formed on the rotating rod A (3), and a collecting mechanism is installed on the top plate (5). One side of the top plate (5) is rotatably connected with a rotating plate (6) at intervals, the bottom of the top plate (5) is connected with a vertical plate (7) at intervals, the inside of the vertical plate (7) is installed with a hydraulic telescopic rod B (8), the output end of the hydraulic telescopic rod B (8) is connected with a sliding block A (9), one end of the sliding block A (9) is rotatably connected with a supporting rod (10), the other end of the supporting rod (10) is rotatably connected with a sliding block B (11), and the sliding block B (11) is slidably connected with the bottom of the rotating plate (6). The collecting mechanism comprises a manual hydraulic vehicle (13), an oil cylinder (14), a tray (15) and a waste hopper (16); the top plate (5) and the rotating plate (6) are both provided with a track groove (12), the manual hydraulic vehicle (13) is rollingly connected with the top plate (5) through the track groove (12), the manual hydraulic vehicle (13) is installed with the oil cylinder (14), the output end of the oil cylinder (14) is connected with the tray (15), and the waste hopper (16) is placed in the tray (15). A construction platform based on claim 1 is implemented, 2. A method of removing a bridge pier, bent cap, tie beam located within the range of a slope slip zone, characterized in that, comprising the following steps: S1, first, level the slope, install concrete steel columns on both sides of the bridge pier column to be demolished to provide temporary support for the bent cap; after the installation of the concrete steel columns is completed, the construction platform is built; S3, after the cutting of the bent cap is completed, the height of the construction platform is lowered, the bridge pier column on the upper part of the tie beam is cut using a rope saw, the cut concrete blocks are transferred to the collecting mechanism on the construction platform in turn according to a thickness of 30 cm, and are transferred to the ground by a car crane; S2, the operator first uses a rope saw to remove the rubber support on the upper part of the bent cap on the construction platform, the upper cushion stone is directly cut and removed by the rope saw, and the cut debris is transferred to the ground. The cutting thickness of the bent cap is 30 cm, and each piece is cut to a size of 2.3 m 1.6 m 0.3 m, and the cut bent cap is collected by a collection mechanism and dragged to the outside of the bent cap, and then transferred to the ground by a car crane. S4, after the cutting of the bridge pier column on the upper part of the tie beam is completed, the construction platform is continuously lowered, the tie beam is cut by a worker through a rope saw, the cutting thickness is 30 cm, the cut concrete blocks are collected by the collecting mechanism and are transferred to the ground by a car crane; S5, after the cutting of the tie beam is completed, the height of the construction platform is continuously lowered, the bridge pier column on the lower part of the tie beam is cut, the bridge pier column on the lower part of the tie beam is separated and cut layer by layer according to a thickness of 30 cm, and is collected; until the cutting is completed, the construction platform is demolished.

3. The method for the demolition of a bridge pier, a bent cap and a tie beam located within the scope of slope slip soil according to claim 2, characterized in that ​ When the bent cap is cut, the wedge-shaped part at the left end of the bent cap is cut first, and the cut concrete block is transferred into the waste hopper (16), and then the waste hopper (16) is transferred to the ground by the automobile crane. The concrete block is cut according to the thickness of 30 cm, and the cutting is performed in the direction from both sides to the middle.

Images