A pier column vertical cage platform channel construction method and cage platform channel device

Abstract

The present invention discloses a method for constructing a vertical cage platform channel for a pier column, comprising the following steps: (1) breaking the pile head concrete according to the design requirements to expose the pile foundation steel cage; (2) installing the pier column steel cage, and before the pier column steel cage is installed and hoisted, installing a cage frame on the side of the pier column steel cage, and the hook must be hung on the reinforcement ribs of the pier column steel cage, and the position of the cage frame coincides with a single semicircular template. In the present invention, the vertical cage platform device is alternately provided with a flip platform and a stepping rod, which is convenient for construction workers to climb and construct on the flip platform, solves the safety problem of naked climbing when the steel cage is unhooked, and has high safety; setting a hook and setting the hook on the reinforcement ribs of the steel cage and the template is convenient for disassembly, and the overall hoisting and disassembly speed is fast, which improves the work efficiency of workers and replaces safety facilities such as steel pipe brackets or pier body protection frames, solves the problem of safety management of highway bridge pier construction brackets, simplifies the process, and has strong operability.

Description

Technical Field

[0001] The invention belongs to the field of cylindrical high pier casting methods and devices, and in particular relates to a pier column vertical back cage platform channel construction method and a back cage platform channel device. Background Art

[0002] The history of human development is the history of architecture development. Human beings continue to develop, and architecture continues to move forward. With the continuous acceleration of modernization and urbanization, my country's infrastructure technology has developed rapidly, and large-scale round pier column buildings are becoming more and more common. In traditional round pier column buildings, the external frame is erected by the bracket erection method, which has great safety hazards during installation and removal. With the progress of the industry, some construction uses circular platforms and fixed pier body protection frames, but the procurement cost of the protection frame is high, and the erection and removal efficiency is extremely low, making it difficult to promote and apply in the highway construction industry. At present, the construction of cylindrical high piers often involves the phenomenon of crane cages carrying people and climbing steel cages and formworks. Solving this phenomenon has always been a difficult problem in the highway construction industry, resulting in frequent safety accidents in high-altitude operations on piers.

[0003] According to the mandatory requirements for safety in highway and water transport projects in Chongqing - Document No. 81 of Chongqing Municipal Commission of Transport

[2015] , safe passages for personnel and reliable operating platforms must be set up during pier construction. Therefore, it is urgent to solve the problem of people carrying people in the crane cage and climbing steel cages and formwork. Therefore, it is necessary to design a construction method and device for the vertical cage platform passage of piers with high safety factor, low cost, easy disassembly and assembly, and high work efficiency. Summary of the invention

[0004] The purpose of the present invention is to design a pier column vertical cage platform channel construction method and a cage platform channel device with high safety factor, low cost, easy disassembly and assembly, and high work efficiency.

[0005] Based on the above purpose, the present invention adopts the following technical solutions:

[0006] A method for constructing a pier column vertical back cage platform channel comprises the following steps:

[0007] (1) Remove the concrete at the pile head according to the design requirements to expose the pile foundation steel cage;

[0008] (2) Install the pier column reinforcement cage. Before the pier column reinforcement cage is installed and hoisted, install the back cage frame on the side of the pier column reinforcement cage. The hook must be hung on the reinforcement of the pier column reinforcement cage. The position of the back cage frame coincides with the single semicircular template.

[0009] (3) Use a crane to hoist the pier column reinforcement cage, and then position and weld the pier column reinforcement cage and the pile foundation reinforcement cage for reinforcement;

[0010] (4) Climb to the top of the cage through the back cage frame on the side of the pier column reinforcement cage, hang up the safety belt and unhook the pier column reinforcement cage, and then climb down to the ground through the back cage frame;

[0011] (5) Assemble and reinforce the semicircular formwork on the ground;

[0012] (6) After hoisting the semicircular formwork, climb to the top through the back cage frame on the side of the pier column reinforcement cage, and temporarily reinforce the top of the semicircular formwork and the pier column reinforcement cage with iron wire;

[0013] (7) After the reinforcement is completed, unhook the semicircular formwork slings, connect the slings to the back cage frame, and then lift and remove the back cage frame;

[0014] (8) Lift the other half of the assembled semicircular formwork, reinforce the top and bottom of the semicircular formwork respectively, and after the semicircular formwork is formed into a whole, unhook the top sling;

[0015] (9) Lift and install the cage frame to the side of the combined rear semicircular formwork, connect the hook with the formwork reinforcement rib, climb the cage frame to reinforce the longitudinal bolt holes, and then install the pier column top opening operating platform;

[0016] (10) Adjust the verticality of the formwork and proceed with concrete pouring after acceptance.

[0017] Furthermore, in step (5), the length of a single section of the semicircular formwork is 2 m, and the longitudinal length of the semicircular formwork is determined according to the height of the pier and the tie beam, which is generally 8-10 m.

[0018] Furthermore, in step (9), the center lines of the two back cage frames are consistent with the center of the joint of the semicircular template.

[0019] A back cage platform channel device used in the method comprises a hook, a back cage frame is fixedly installed below the hook, a turning layer and a connecting layer are horizontally and alternately arranged inside the back cage frame, a turning platform is arranged on the turning layer, the turning platform is connected to the turning layer through a movable pin shaft, a support rod is arranged on the side of the turning platform, and a pedal rod is arranged on the connecting layer.

[0020] Furthermore, an auxiliary rod is installed at the bottom of the back cage frame, and the auxiliary rod is designed to be U-shaped.

[0021] Furthermore, vertical bars are arranged at the four corners of the back cage frame, and horizontal bars are arranged between the vertical bars.

[0022] Furthermore, vertical rods are fixed at the midpoints of three sides of the back cage frame, and no vertical rod is set at the midpoint of another side.

[0023] Furthermore, the turnover layer and the connection layer are alternately fixedly connected to the crossbar, and the spacing between the turnover layer and the connection layer is 1.6m-2.5m.

[0024] Furthermore, the length of the flip platform is greater than the distance from the support rod to the movable pin.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The cage platform passage device of the method provided by the present invention, the cage frame, hook and auxiliary rod in the device are all made of pipes commonly used in engineering, which are easy to obtain and low in cost. The flip platform and the stepping rod are alternately arranged, which is convenient for construction workers to climb and construct on the flip platform, and solves the safety problem of naked climbing when the steel cage is unhooked, and has high safety. The hook is arranged and set on the reinforcing ribs of the steel cage and the template, which is convenient for disassembly, and the overall lifting and disassembly speed is fast, which greatly improves the work efficiency of workers and replaces the investment of safety facilities such as steel pipe brackets or pier body protection frames, solving the problem of safety management of highway bridge pier construction brackets.

[0027] The present invention provides a method for constructing a vertical cage platform channel for a pier column, which does not require the construction of a steel pipe support or a pier body protection frame in the early stage, thereby simplifying the process, improving efficiency, and reducing construction costs. During construction, the longitudinal length of the semicircular formwork is determined according to the height of the pier column and the tie beam, and the operation is flexible and has a wide range of applications. After the semicircular formwork is docked, two cage frames are hoisted on the docking center line of the semicircular formwork respectively, and the center line of the cage frame is consistent with the docking center line of the semicircular formwork, so that the formwork is evenly stressed, and at the same time, it is convenient for construction personnel to longitudinally reinforce the bolt holes, and the operability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the cage platform channel device of the present invention;

[0029] Figure 2 This is a schematic diagram of step (1) of the method of the present invention;

[0030] Figure 3 This is a schematic diagram of step (2) of the method of the present invention;

[0031] Figure 4 This is a schematic diagram of step (3) of the method of the present invention;

[0032] Figure 5 This is a schematic diagram of step (4) of the method of the present invention;

[0033] Figure 6 This is a schematic diagram of step (5) of the method of the present invention;

[0034] Figure 7 This is a schematic diagram of step (6) of the method of the present invention;

[0035] Figure 8 This is a schematic diagram of step (7) of the method of the present invention;

[0036] Fig. 9 This is a schematic diagram of step (8) of the method of the present invention;

[0037] Fig.10 This is a schematic diagram of step (9) of the method of the present invention;

[0038] Fig.11 This is a schematic diagram of step (10) of the method of the present invention.

[0039] 1. Hook; 2. Back cage frame; 201. Cross bar; 202. Vertical bar; 3. Turning layer; 4. Turning platform; 5. Support rod; 6. Connecting layer; 7. Pedal rod; 8. Movable pin; 9. Auxiliary rod; 10. Pile foundation steel cage; 11. Crane; 12. Lifting rope; 13. Pier column steel cage; 14. Semicircular formwork; 15. Annular bolt hole; 16. Longitudinal bolt hole; 17. Top operating platform. DETAILED DESCRIPTION

[0040] like Figure 1-11 As shown, the present invention discloses a method for constructing a pier column vertical back cage platform channel, comprising the following steps:

[0041] (1) According to the design requirements, the pile head concrete is removed to expose the pile foundation steel cage 10;

[0042] (2) Install the pier column reinforcement cage 13. Before installing and lifting the pier column reinforcement cage 13, install the back cage frame 2 on the side of the pier column reinforcement cage 13. The hook 1 must be hung on the reinforcement of the pier column reinforcement cage 13;

[0043] (3) The pier column reinforcement cage 13 is hoisted by a crane 11 with a load of 25 tons. The pier column reinforcement cage 13 and the pile foundation reinforcement cage 10 are positioned and welded for reinforcement;

[0044] (4) Climb to the top of the cage through the back cage frame 2 on the side of the pier column reinforcement cage 13, hang up the safety belt and unhook the pier column reinforcement cage 13, and then climb down to the ground through the back cage frame 2;

[0045] (5) Assemble and reinforce the semicircular formwork 14 on the ground. The semicircular formwork 14 is reinforced with circumferential bolt holes 15. The length of a single section of the semicircular formwork 14 is 2m. The longitudinal length of the semicircular formwork 14 is determined according to the height of the pier and tie beam, which is generally 8-10m.

[0046] (6) After hoisting the semicircular formwork 14, climb to the top through the back cage frame 2 on the side of the pier column reinforcement cage 13, and temporarily reinforce the top of the semicircular formwork 14 and the pier column reinforcement cage 13 with iron wire;

[0047] (7) After the reinforcement is completed, the sling 12 of the semicircular formwork 14 is unhooked, and the sling 12 is connected to the back cage frame 2. After the connection, the back cage frame 2 is lifted and removed;

[0048] (8) Lift the other half of the assembled semicircular formwork 14, and reinforce the top and bottom of the semicircular formwork 14 respectively. After the semicircular formwork 14 is formed into a whole, unhook the top sling 12, and reinforce the top and bottom with longitudinal bolt holes 16;

[0049] (9) Lift and install the cage frames 2 to the side of the combined semicircular formwork 14 respectively. The center lines of the two cage frames 2 are aligned with the center of the joint of the semicircular formwork 14. The hook 1 is hooked to the formwork reinforcement rib. Climb the cage frames 2 to reinforce the longitudinal bolt holes 16, and then install the pier top operating platform 17.

[0050] (10) Adjust the verticality of the formwork and proceed with concrete pouring after acceptance.

[0051] A back cage platform channel device for a method comprises a hook 1, a back cage frame 2 is fixedly installed below the hook 1, the back cage frame 2 is welded by a steel pipe commonly used in engineering, vertical bars 202 are arranged at the four corners of the back cage frame 2, a cross bar 201 is arranged between the vertical bars 202, vertical bars 202 are fixed at the midpoints of the three sides of the back cage frame 2, and no vertical bar 202 is arranged at the midpoint of the other side. A flip layer 3 and a connecting layer 6 are alternately arranged horizontally inside the back cage frame 2, the flip layer 3 and the connecting layer 6 are alternately fixedly connected with the cross bar 201, and the spacing between the flip layer 3 and the connecting layer 6 is 1.6m-2.5m. A flip platform 4 is arranged on the flip layer 3, and the flip platform 4 is connected to the flip layer 3 through a movable pin 8. A support rod 5 is arranged on the side of the flip platform 4, the length of the flip platform 4 is greater than the distance from the support rod 5 to the movable pin 8, and the length of the flip platform 4 is less than the spacing between the flip layer 3 and the connecting layer 6. The connecting layer 6 is provided with a pedal rod 7, which is used as a booster rod to facilitate construction workers to climb up and down. An auxiliary rod 9 is installed at the bottom of the back cage frame 2, and the auxiliary rod 9 is U-shaped, which facilitates construction workers to climb from the bottom to the inside of the back cage frame 2.

[0052] Before use, the construction personnel first select steel pipes commonly used in engineering, weld them vertically and horizontally into the frame of the back cage frame 2, weld a hook 1 at the top of the frame of the back cage frame 2, and weld an auxiliary rod 9 at the bottom of the frame of the back cage frame 2. The flip platform 4 and the pedal rod 7 are alternately installed at a fixed interval inside the back cage frame 2, and the flip platform 4 and the frame of the back cage frame 2 can be turned upside down through the movable pin 8. The tail of the flip platform 4 is installed with a support rod 5, and the length of the flip platform 4 is greater than the distance from the support rod 5 to the movable pin 8, and the length of the flip platform 4 is less than the spacing between the flip layer 3 and the connecting layer 6, so that the support rod 5 can support the flip platform 4, and the flip angle of the flip platform 4 does not exceed 90° clockwise. After the production is completed, it can be used in construction, and the production is simple and the cost is low.

[0053] During use, according to steps 1-10, during the construction process, when the construction personnel need to climb through the device, first, the construction personnel step on the auxiliary rod 9 to push the bottommost set flip platform 4 upward, and the flip platform 4 flips up clockwise around the movable pin 8. After the construction personnel climb up the flip layer 3 through the opening, the construction personnel put the flip platform 4 to the horizontal level. Because the length of the flip platform 4 is greater than the distance from the support rod 5 to the movable pin 8, the support rod 5 props up the flip platform 4, and the construction personnel can stand on the flip platform 4 to work. When the construction personnel need to continue climbing, with the help of the pedal rod 7 provided on the connection layer 6 as a power point, climb to the connection layer 6, and then flip the flip platform 4 on the upper layer and climb, so as to carry out construction at a suitable height, which is convenient for operation. When the construction personnel need to climb down, the flip platform 4 is flipped up and opened, with the help of the pedal rod 7 provided on the connection layer 6 as a power point, climb down to the connection layer 6, and repeat the above operation to complete the climbing down.

Claims

1. A method for constructing a vertical back cage platform channel of a pier column, characterized in that: The following steps are involved: (1) Remove the concrete at the pile head according to the design requirements to expose the pile foundation steel cage; (2) Install the pier column reinforcement cage. Before the pier column reinforcement cage is installed and hoisted, a back cage frame is installed on the side of the pier column reinforcement cage. The back cage frame is provided with a turning layer and a connecting layer alternately arranged horizontally. A turning platform is provided on the turning layer. The turning platform is connected to the turning layer through a movable pin shaft. A support rod is provided on the side of the turning platform. A pedal rod is provided on the connecting layer. A hook is fixedly installed on the top of the back cage frame. The hook must be hung on the reinforcement rib of the pier column reinforcement cage. The position of the back cage frame coincides with a single semicircular template. (3) Use a crane to hoist the pier column reinforcement cage, and then position and weld the pier column reinforcement cage and the pile foundation reinforcement cage for reinforcement; (4) Climb to the top of the cage through the back cage frame on the side of the pier column reinforcement cage, hang up the safety belt and unhook the pier column reinforcement cage, and then climb down to the ground through the back cage frame; (5) Assemble and reinforce the semicircular formwork on the ground; (6) After hoisting the semicircular formwork, climb to the top through the back cage frame on the side of the pier column reinforcement cage, and temporarily reinforce the top of the semicircular formwork and the pier column reinforcement cage with iron wire; (7) After the reinforcement is completed, unhook the semicircular formwork slings, connect the slings to the back cage frame, and then lift and remove the back cage frame; (8) Lift the other half of the assembled semicircular formwork, reinforce the top and bottom of the semicircular formwork respectively, and after the semicircular formwork is formed into a whole, unhook the top sling; (9) Lift and install the cage frame to the side of the combined rear semicircular formwork, connect the hook with the formwork reinforcement rib, climb the cage frame to reinforce the longitudinal bolt holes, and then install the pier column top opening operating platform; (10) Adjust the verticality of the formwork and proceed with concrete pouring after acceptance.

2. The method for constructing a vertical cage platform channel for a pier column according to claim 1, characterized in that: In step (5), the length of a single section of the semicircular formwork is 2 m. The longitudinal length of the semicircular formwork is determined according to the height of the pier and the tie beam, and is generally 8-10 m.

3. The method for constructing a vertical cage platform channel for a pier column according to claim 1, characterized in that: In the step (9), the center lines of the two back cage frames are consistent with the center of the joint of the semicircular template.

4. The method for constructing a vertical cage platform channel for a pier column according to claim 1, characterized in that: An auxiliary rod is installed at the bottom of the back cage frame, and the auxiliary rod is designed to be U-shaped.

5. The method for constructing a vertical cage platform channel for a pier column according to claim 4, characterized in that: The four corners of the back cage frame are all provided with vertical bars, and horizontal bars are provided between the vertical bars.

6. The method for constructing a vertical back cage platform channel of a pier column according to claim 5, characterized in that: Vertical rods are fixed at the midpoints of the three side surfaces of the back cage frame, and no vertical rod is arranged at the midpoint of another side surface.

7. The method for constructing a vertical cage platform channel for a pier column according to claim 6, characterized in that: The turnover layer and the connection layer are alternately fixedly connected to the crossbar, and the spacing between the turnover layer and the connection layer is 1.6m-2.5m.

8. The method for constructing a vertical cage platform channel for a pier column according to claim 7, characterized in that: The length of the turning platform is greater than the distance from the support rod to the movable pin shaft.

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