Dismantling method for bridge piers, bent caps and straining beams located in slope slip zone soil range

Abstract

The invention discloses a method for dismantling a pier, a bent cap and a straining beam in a slope slip band soil range, and belongs to the technical field of bridge dismantling methods.The method comprises the steps that firstly, a slope is leveled, concrete steel stand columns are installed on the two sides of a to-be-dismantled pier stand column, and a construction platform is built; firstly, a rope saw is used for dismantling a rubber support on the upper portion of a capping beam, an upper padstone is also directly cut and dismantled through the rope saw, after the capping beam is cut, the height of a construction platform is lowered, a bridge pier stand column on the upper portion of a tie beam is cut through the rope saw, and after the bridge pier stand column on the upper portion of the tie beam is cut, the construction platform continues to be lowered; and a constructor cuts the straining beam through a rope saw, after the straining beam is cut, the height of the construction platform continues to be reduced, the pier stand columns on the lower portion of the straining beam are cut till cutting is completely completed, and the construction platform is dismantled. The method has the advantages that the dismantling speed is high, the dismantling method is safe and reliable, large dismantling equipment is not needed, and the multiple pier stand columns can be dismantled at the same time.

Description

Technical Field

[0001] The 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 a slope sliding zone. Background Art

[0002] A bridge usually refers to a building used to cross water or other obstacles, allowing vehicles, pedestrians or other means of transportation to pass safely. The construction of bridges provides high-speed and convenient transportation for modern society. In the actual use of bridges, the piers used to support the bridges often shift due to natural disasters, fatigue, etc. At this time, the piers and the cap beams on the top of the piers and the tie beams in the middle of the piers need to be removed. The method commonly used in the prior art is to first drill holes in the piers and then cut off the piers with a cutting machine. This method is not suitable for the removal of large bridge piers, and it is also impossible to remove the cap beams on the top of the piers and 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 sliding zone of the slope is an urgent problem 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 sliding zone of the slope, which has the advantages of fast dismantling speed, safe and reliable dismantling method, no need to use large-scale dismantling equipment, and the dismantling of multiple bridge pier columns can be carried out simultaneously.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] A method for removing bridge piers, cap beams and tie beams located within the range of a slope sliding zone comprises the following steps:

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

[0008] S2. The workers on the construction platform first use a rope saw to remove the rubber bearing on the top of the cap beam, and directly cut and remove the upper cushion stone with a rope saw, and then transfer the cut debris to the ground. The cap beam is cut to a thickness of 30cm, and each piece is cut to a size of 2.3m*1.6m*0.3m. The cut cap beam is collected by a collection mechanism, dragged to the outside of the cap beam, and transported to the ground by a truck crane;

[0009] S3. After the cap beam is cut, the construction platform is lowered and the pier columns on the upper part of the tie beam are cut using a rope saw. The cut concrete blocks are transferred to the collection mechanism on the construction platform in order of 30 cm thickness and transported 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 is further lowered, and the construction workers cut the tie beam with a rope saw, with a cutting thickness of 30 cm. The cut concrete blocks are collected by a collection mechanism and transported to the ground by a truck crane;

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

[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 rollingly 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 rollingly 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 rollingly connected to a slide groove provided 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, a vertical plate is rotatably connected to the bottom of the top plate, a hydraulic telescopic rod B is installed inside the vertical plate, an 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, the other end of the support rod is rotatably connected to the slider B, and the slider B is slidably connected to the bottom of the rotating plate.

[0014] Furthermore, the collecting mechanism includes: a manual hydraulic vehicle, an oil cylinder, a material tray and a waste hopper; track grooves are provided on the top plate and the rotating plate, the hydraulic vehicle is rollingly connected to the top plate through the track grooves, an oil cylinder is installed on the hydraulic vehicle, the output end of the oil cylinder is connected to the material tray, and the waste hopper is placed in 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 blocks are transferred to a waste hopper, and then the waste hopper is transferred to the ground by a truck crane. The concrete blocks are cut according to a thickness of 30 cm, and the cutting is carried out from both sides to the middle.

[0016] The beneficial effects of the present invention are:

[0017] The present invention has a simple structure and is easy to use. First, the slope is leveled, and concrete steel columns are installed on both sides of the pier columns to be removed to provide temporary support for the cap beam. After the concrete steel columns are installed, a construction platform is built. The operator first uses a rope saw to remove the rubber bearing on the upper part of the cap beam on the construction platform, and the upper cushion stone is also directly cut and removed by the rope saw, and then the cut debris is transferred to the ground. The cap beam is cut to a thickness of 30 cm, and is cut with a size of 2.3m*1.6m*0.3m per piece. The cut cap beam is collected by a collecting mechanism, dragged to the outside of the cap beam, and transported to the ground by a car crane. After the cap beam is cut, the height of the construction platform is lowered, and the rope saw is used to cut the cap beam. The bridge pier columns on the upper part of the tie beam are cut first, and the cut concrete blocks are transferred to the collection mechanism on the construction platform in sequence according to the thickness of 30 cm, and then transported to the ground by the automobile crane; after the cutting of the bridge pier columns on the upper part of the tie beam is completed, the construction platform continues to be lowered, and the construction personnel cut the tie beam with a rope saw, and the cutting thickness is 30 cm. The cut concrete blocks are also collected by the collection mechanism and transported to the ground by the automobile crane; after the cutting of the tie beam is completed, the construction platform continues to be lowered, and the bridge pier columns on the lower part of the tie beam are cut, and the bridge pier columns on the lower part of the tie beam are separated and cut layer by layer according to the thickness of 30 cm, and then collected; until the cutting is completed, the construction platform is removed. Therefore, the present invention has the advantages of fast removal speed, safe and reliable removal method, no need to use large-scale removal equipment, and the removal of multiple bridge pier columns can be carried out simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

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

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

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

[0022] Figure 4 It is a structural schematic diagram of the collecting mechanism of the present invention.

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

[0024] Among them, in the figure:

[0025] 1-bottom plate; 2-hydraulic telescopic rod A; 3-rotating rod A; 4-rotating rod B; 5-top plate; 6-rotating plate; 7-vertical plate; 8-hydraulic telescopic rod B; 9-slider A; 10-support rod; 11-slider B; 12-track groove; 13-manual hydraulic vehicle; 14-oil cylinder; 15-material tray; 16-waste hopper. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

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

[0028] S1. First, level the slope and install concrete steel columns on both sides of the pier columns to be removed to provide temporary support for the cap beam. After the concrete steel columns are installed, build a construction platform. In order 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 enhance the support strength.

[0029] S2. On the construction platform, the workers first use a rope saw to remove the rubber bearings on the top of the cap beam. The upper cushion stone is also directly cut and removed with a rope saw, and then the cut debris is transferred to the ground. The cap beam is cut to a thickness of 30 cm and is cut with a size of 2.3m*1.6m*0.3m per piece. The cut cap beam is collected by a collection mechanism and dragged to the outside of the cap beam, and then transferred to the ground by a truck crane. The rubber bearings and cushion stones on the top of the concrete cap beam are cleaned, and after the construction waste is transferred to the ground, the cap beam is dismantled.

[0030] S3. After the cap beam is cut, the construction platform is lowered and the pier columns on the upper part of the tie beam are cut using a rope saw. The cut concrete blocks are transferred to the collection mechanism on the construction platform in order of 30 cm thickness and transported to the ground by a truck crane.

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

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

[0033] The construction platform includes: a bottom 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 installed on the bottom plate 1, one end of the rotating rod A3 is connected to the bottom plate 1 in a rolling manner, and the other end is connected to the top plate 5 in a rotational manner, one end of the rotating rod B4 is connected to the bottom plate 1 in a rotational manner, and the other end is connected to the top plate 5 in a rolling manner, one side of the rotating rod A3 is connected to one side of the rotating rod B4 in a rotational manner, the output end of the hydraulic telescopic rod A2 is connected to the chute provided on the rotating rod A3 in a rolling manner, and the collecting mechanism is installed on the top plate 5. The top plate 5 is extended horizontally to the outside of the bridge, so that the automobile crane has space to lift the demolished waste to the ground and then clean it out of the site. At the same time, the construction platform is also a platform for placing the equipment for dismantling the cap beam and for operators to walk around. After the concrete cap beam is dismantled, all scattered waste on the platform is cleaned up in time.

[0034] A rotating plate 6 is rotatably connected to one side of the top plate 5, and a vertical plate 7 is rotatably connected to the bottom of the top plate 5. 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. 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 pier columns, the crane cannot lift the hook to the inside of the column. In order to solve the problem of space limitation, the present invention uses a rotating plate 6, and a rotating plate 6 is rotatably connected between two adjacent pier columns. Guardrails can also be installed around the top plate 5 to ensure the safety of construction workers.

[0035] The collecting mechanism includes: a manual hydraulic vehicle 13, an oil cylinder 14, a material tray 15 and a waste hopper 16; a track groove 12 is provided on the top plate 5 and the rotating plate 6, the hydraulic vehicle 13 is rollingly connected with the top plate 5 through the track groove 12, the hydraulic vehicle 13 is installed with an oil cylinder 14, the output end of the oil cylinder 14 is connected with 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 using the oil cylinder 14 to avoid the cut concrete blocks from bouncing to the ground due to the large drop and causing danger.

[0036] When the cap beam is cut, the wedge-shaped part at the left end of the cap beam is cut first, and the cut concrete blocks are transferred to the waste hopper 16, and then the waste hopper 16 is transferred to the ground by the truck crane. The concrete blocks are cut according to the thickness of 30 cm, and the cutting is carried out from both sides to the middle. Since the wedge-shaped cap beam is located at a higher position, a temporary bracket can be made during on-site construction to ensure construction safety.

[0037] The structure of the present invention is simple. First, the slope is leveled, and concrete steel columns are installed on both sides of the bridge pier columns to be removed to provide temporary support for the cap beam. After the concrete steel columns are installed, a construction platform is built. In order 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 enhance the support strength. At this time, the rotating plate 6 is located between two adjacent bridge pier columns, and the hydraulic telescopic rod A is started to raise the top plate 5 until the waste hopper 16 is close enough to the cap beam. The operator first uses a rope saw on the construction platform to cut the upper part of the cap beam. The rubber bearing is removed, and the upper cushion stone is also directly cut and removed with a rope saw. The waste falls into the waste hopper, and the manual hydraulic vehicle 13 is pulled out. The waste hopper 16 is lifted to the ground by the car crane, and then the waste is transferred. The cutting thickness of the cap beam is 30 cm, and each piece is cut with a size of 2.3m*1.6m*0.3m. The cut cap beam is collected by the waste hopper 16, dragged to the outside of the cap beam, and transferred to the ground by the car crane; the rubber bearing and cushion stone on the top of the concrete cap beam are cleaned, and after the construction waste is transferred to the ground, the cap beam is removed. 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 by a rope saw. The cut concrete blocks are transferred to the waste hopper 16 on the construction platform in sequence according to the thickness of 30 cm, and transported to the ground by a car crane; after the pier columns on the upper part of the tie beam are cut, the construction platform is further lowered, and the construction personnel cut the tie beam by a rope saw with a cutting thickness of 30 cm. The cut concrete blocks are also collected by a collecting mechanism and transported to the ground by a car crane; if the block diameter is large after cutting, it can be further cut into small pieces from the middle part; after the cutting of the tie beam is completed, the construction platform is further lowered to cut the pier columns under the tie beam, and the pier columns under the tie beam are separated layer by layer according to the thickness of 30 cm for cutting and collection; until the cutting is completed, the construction platform is removed, so that the present invention has the advantages of fast removal speed, safe and reliable removal method, no need to use large-scale removal equipment, and the removal of multiple pier columns can be carried out simultaneously.

[0038] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0039] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one 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 present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for dismantling bridge piers, cap beams and tie beams located within the range of slope sliding belt soil, characterized in that: The following steps are involved: S1. First, level the slope and install concrete steel columns on both sides of the pier columns to be removed to provide temporary support for the cap beam. After the concrete steel columns are installed, build a construction platform; S2. The workers on the construction platform first use a rope saw to remove the rubber bearing on the top of the cap beam, and directly cut and remove the upper cushion stone with a rope saw, and then transfer the cut debris to the ground. The cap beam is cut to a thickness of 30cm, and each piece is cut to a size of 2.3m*1.6m*0.3m. The cut cap beam is collected by a collection mechanism, dragged to the outside of the cap beam, and transported to the ground by a truck crane; S3. After the cap beam is cut, the construction platform is lowered and the pier columns on the upper part of the tie beam are cut using a rope saw. The cut concrete blocks are transferred to the collection mechanism on the construction platform in order of 30 cm thickness and transported to the ground by a truck crane. S4. After the pier columns on the upper part of the tie beam are cut, the construction platform is further lowered, and the construction workers cut the tie beam with a rope saw, with a cutting thickness of 30 cm. The cut concrete blocks are collected by a collection mechanism and transported to the ground by a truck crane; S5. After the cutting of the tie beam is completed, the construction platform continues to lower its height and cuts the bridge pier columns under the tie beam. The bridge pier columns under the tie beam are separated and cut layer by layer according to the thickness of 30 cm, and then collected; until all the cutting is completed, the construction platform is dismantled.

2. A method for dismantling bridge piers, cap beams and tie beams located within the range of slope sliding zone soil according to claim 1, characterized in that: The construction platform comprises: a bottom plate (1), a hydraulic telescopic rod A (2), a rotating rod A (3), a rotating rod B (4) and a top plate (5); the hydraulic telescopic rod A (2) is mounted on the bottom plate (1); one end of the rotating rod A (3) is connected to the bottom plate (1) in a rolling manner, and the other end is connected to the top plate (5) in a rotating manner; one end of the rotating rod B (4) is connected to the bottom plate (1) in a rotating manner, and the other end is connected to the top plate (5) in a rolling manner; one side of the rotating rod A (3) is connected to one side of the rotating rod B (4) in a rotating manner; the output end of the hydraulic telescopic rod A (2) is connected to a sliding groove provided on the rotating rod A (3) in a rolling manner; and the collecting mechanism is mounted on the top plate (5).

3. The method for dismantling bridge piers, cap beams and tie beams located within the range of the slope sliding zone according to claim 2, characterized in that: A rotating plate (6) is rotatably connected to one side of the top plate (5), a vertical plate (7) is rotatably connected to the bottom of the top plate (5), a hydraulic telescopic rod B (8) is installed inside the vertical plate (7), an output end of the hydraulic telescopic rod B (8) is connected to a slider A (9), the slider A (9) is rotatably connected to one end of a support rod (10), the other end of the support rod (10) is rotatably connected to a slider B (11), and the slider B (11) is slidably connected to the bottom of the rotating plate (6).

4. A method for dismantling bridge piers, cap beams and tie beams located within the range of slope sliding zone soil according to claim 3, characterized in that: The collecting mechanism comprises: a manual hydraulic vehicle (13), an oil cylinder (14), a material tray (15) and a waste hopper (16); a track groove (12) is provided on the top plate (5) and the rotating plate (6); the hydraulic vehicle (13) is rollingly connected to the top plate (5) via the track groove (12); an oil cylinder (14) is installed on the hydraulic vehicle (13); the output end of the oil cylinder (14) is connected to the material tray (15); and the waste hopper (16) is placed in the material tray (15).

5. A method for dismantling bridge piers, cap beams and tie beams located within the range of slope sliding zone according to claim 4, characterized in that: When the cap beam is cut, the wedge-shaped portion at the left end of the cap beam is cut first, and the cut concrete blocks are transferred to a waste hopper (16), and then the waste hopper (16) is transferred to the ground by a truck crane. The concrete blocks are cut according to a thickness of 30 cm, and the cutting is carried out from both sides to the middle.

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