Auxiliary recovery device and recovery method for front support grouting steel pipe pile

Abstract

The invention belongs to the technical field of foundation pit supporting, and provides an auxiliary recycling device and method for a front supporting grouting steel pipe pile. The auxiliary recycling device comprises calipers, a clamping hydraulic shaft, an upper plane, a lifting hydraulic shaft and a main plane; the clamping hydraulic shafts are mounted on the upper plane, and the number of the clamping hydraulic shafts is four; the lifting hydraulic shaft is mounted on the main plane, and the output end of the lifting hydraulic shaft is connected with the upper plane; the upper plane and the main plane are used for being connected to a front supporting grouting steel pipe pile in a sleeving mode. According to the recycling device and method, the recycling rate of the front support grouting steel pipe pile can be remarkably increased, and therefore the cost in the construction process is greatly reduced. The innovation not only contributes to the improvement of economic benefits, but also has positive significance in promoting the carbon reduction and emission reduction work in the construction process, and further makes a contribution to environmental protection and sustainable development.

Description

Technical Field

[0001] The invention belongs to the technical field of foundation pit support, and in particular relates to an auxiliary recovery device and a recovery method for front-support grouting steel pipe piles. Background Art

[0002] Foundation pit support is an important part of foundation pit engineering, and its overall construction quality is very critical. Generally speaking, foundation pit support is a temporary structure. If the investment is too much, it will cause unnecessary waste. Once the support structure is unsafe, it is easy to cause engineering accidents, resulting in casualties, damage to adjacent buildings and other serious hazards. Therefore, it is very necessary to choose a safe, reasonable and economical foundation pit support solution.

[0003] The front support grouting steel pipe pile support system can effectively improve the efficiency of engineering construction in foundation pit construction. By adopting this support system during the construction process, the probability of deformation and collapse during earth excavation can be reduced, and the safety and stability of construction can be improved. Due to its improved construction efficiency and reduced construction risks, it can save manpower and material resources, thereby reducing the overall construction cost. The amount of materials such as steel bars and concrete used is far less than that of conventional solutions, avoiding secondary noise and dust pollution to the environment caused by dismantling the support. It has a good green environmental protection effect and significant social comprehensive benefits. Compared with conventional horizontal internal supports, this process can reduce the difficulty of foundation pit construction, improve work efficiency, shorten construction period, and save costs, and can provide reference for the application of similar support technologies.

[0004] In existing construction cases, the front-support grouting steel pipe piles are generally recycled by cutting off after the foundation pit reaches the design strength. This method can only recycle part of the steel pipes above the bottom plate of the foundation pit, while the steel pipes occupying most of the lower part of the foundation pit cannot be recycled, resulting in the loss of steel pipes, which is not conducive to reducing construction costs. Therefore, it is necessary to propose an auxiliary recovery device and recovery method for front-support grouting steel pipe piles during construction, which has positive significance for carbon reduction and emission reduction and green environmental protection construction in engineering implementation. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a front support grouting steel pipe pile auxiliary recovery device and recovery method to solve the problems in the prior art. The technical solution adopted by the present invention is:

[0006] An auxiliary recovery device for front-support grouting steel pipe piles, comprising a caliper, a clamping hydraulic shaft, an upper plane, a lifting hydraulic shaft and a main plane;

[0007] The clamping hydraulic shaft is installed on the upper plane, and four clamping hydraulic shafts are provided. The four clamping hydraulic shafts are distributed in a "cross" shape and the output ends are all distributed inwards, and the output ends of the four clamping hydraulic shafts are all fixedly connected to the calipers;

[0008] The lifting hydraulic shaft is installed on the main plane, and the output end of the lifting hydraulic shaft is connected to the upper plane;

[0009] The upper plane and the main plane are both provided with circular holes adapted to the front-support grouting steel pipe piles; the upper plane and the main plane are used to be sleeved on the front-support grouting steel pipe piles, the clamping hydraulic shaft is used to push the caliper to clamp the front-support grouting steel pipe piles, and the front-support grouting steel pipe piles are moved out by the lifting hydraulic shaft.

[0010] Furthermore, the main plane is installed on a reaction fork, and the reaction fork is fixed on the ground where the front support grouting steel pipe pile is located.

[0011] Furthermore, a directional rod is slidably provided on the side of the clamping hydraulic shaft, and the end of the directional rod is fixedly connected to the caliper.

[0012] Furthermore, it also includes a lower plane, the upper plane, the lower plane and the main plane are arranged from top to bottom, a connecting shaft is fixed on the top of the lower plane, the connecting shaft passes through the upper plane and is connected to a nut, and a buffer spring is sleeved on the connecting shaft.

[0013] Furthermore, four lifting hydraulic shafts are provided, and the four lifting hydraulic shafts are arranged below the clamping hydraulic shaft in a one-to-one correspondence.

[0014] A front support grouting steel pipe pile auxiliary recovery method comprises the following steps:

[0015] The first step is to evenly apply the anti-friction material to the front support grouting steel pipe piles required for the front support before the foundation pit construction. Before applying, the rust or other debris on the front support grouting steel pipe piles should be cleaned to prevent the anti-friction material from falling off, in preparation for the subsequent recycling work;

[0016] The second step is to measure the front support grouting steel pipe piles after the foundation pit construction is completed to obtain their inclination angle and position;

[0017] The third step is to cut and level the foundation pit edge and surrounding purlins;

[0018] The fourth step is to install the auxiliary recovery device and configure the crane on the reaction fork;

[0019] Step 5: Connect the front support grouting steel pipe pile to the crane;

[0020] Step 6: Use the auxiliary recovery device to pull out a part of the front support grouting steel pipe pile. The auxiliary recovery device pulls out the front support grouting steel pipe pile while the crane lifts the front support grouting steel pipe pile until the connection of the front support grouting steel pipe pile is pulled out.

[0021] The seventh step is to remove the connection between the front and rear front support grouting steel pipe piles, and lift the front support grouting steel pipe piles by crane to the place where the steel pipe is placed.

[0022] Repeat steps 6 and 7 until every section of the front support grouting steel pipe pile is recovered.

[0023] The present invention has the following beneficial effects:

[0024] The recycling device and method involved in the present invention can significantly improve the recycling rate of the front support grouting steel pipe piles, thereby significantly reducing the cost expenditure during the construction process. This innovation not only helps to improve economic benefits, but also has a positive significance for promoting carbon reduction and emission reduction during the construction process, thereby contributing to environmental protection and sustainable development. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is the overall structure diagram of the present invention;

[0026] Figure 2 The figure is a flow chart of the method of the present invention. DETAILED DESCRIPTION

[0027] The following will be combined with the embodiments of the present invention Figure 1-Figure 2 , the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0028] An auxiliary recovery device for front-support grouting steel pipe piles, comprising a caliper 1, a clamping hydraulic shaft 2, an upper plane 4, a lifting hydraulic shaft 10 and a main plane 13;

[0029] The clamping hydraulic shaft 2 is installed on the upper plane 4. Four clamping hydraulic shafts 2 are provided. The four clamping hydraulic shafts 2 are distributed in a "cross" shape and the output ends are all distributed inwards. The output ends of the four clamping hydraulic shafts 2 are fixedly connected to the caliper 1.

[0030] The lifting hydraulic shaft 10 is installed on the main plane 13, and the output end of the lifting hydraulic shaft 10 is connected to the upper plane 4;

[0031] The upper plane 4 and the main plane 13 are both provided with circular holes adapted to the front-support grouting steel pipe piles; the upper plane 4 and the main plane 13 are used to be sleeved on the front-support grouting steel pipe piles, and the caliper 1 is pushed to clamp the front-support grouting steel pipe piles through the clamping hydraulic shaft 2, and the front-support grouting steel pipe piles are moved out through the lifting hydraulic shaft 10.

[0032] Furthermore, the main plane 13 is installed on a reaction fork, and the reaction fork is fixed on the ground where the front support grouting steel pipe pile is located.

[0033] Furthermore, a directional rod 3 is slidably provided on the side of the clamping hydraulic shaft 2 , and the end of the directional rod 3 is fixedly connected to the caliper 1 .

[0034] Furthermore, it also includes a lower plane 7, the upper plane 4, the lower plane 7 and the main plane 13 are arranged from top to bottom, the top of the lower plane 7 is fixedly connected to the connecting shaft 5, the connecting shaft 5 passes through the upper plane 4 and is connected to a nut, and a buffer spring 6 is sleeved on the connecting shaft 5. The lower plane 7, the upper plane 4, and the lower plane 7 are all provided with coaxial circular holes of the same size.

[0035] Furthermore, four lifting hydraulic shafts 10 are provided, and the four lifting hydraulic shafts 10 are arranged below the clamping hydraulic shaft 2 in a one-to-one correspondence.

[0036] In addition, the main plane 13 is connected to the reaction fork through the first pin 12 and the second pin 15, and the first pin 12 and the second pin 15 are located on both sides of the main plane 13. A fixing hole 16 is provided on the main plane 13 to connect to the ground. A counterweight frame 9 and a hydraulic control device 8 are also provided on the main plane 13, and the hydraulic control device 8 is connected to the clamping hydraulic shaft 2 and the lifting hydraulic shaft 10.

[0037] A front support grouting steel pipe pile auxiliary recovery method comprises the following steps:

[0038] The first step is to evenly apply anti-friction material to the front-support grouting steel pipe piles before foundation pit construction. Before applying, the rust or other debris on the front-support grouting steel pipe piles should be cleaned to prevent the friction-reducing material from falling off, in preparation for subsequent recycling work.

[0039] In the second step, after the foundation pit construction is completed and the detection strength reaches the preset strength, a total station is used to measure the front support grouting steel pipe piles to obtain their inclination angle and position.

[0040] The third step is to cut and level the edge of the foundation pit and the surrounding purlins.

[0041] The fourth step is to install the auxiliary recovery device and place the crane on the reaction fork to ensure the stability of the auxiliary recovery device.

[0042] The fifth step is to connect the front support grouting steel pipe piles to the crane.

[0043] Step 6: Use the auxiliary recovery device to pull out a part of the front support grouting steel pipe pile, and the pulled-out length shall not exceed 1 / 3 of the length of one section of the front support grouting steel pipe pile. While the auxiliary recovery device pulls out the steel pipe, the crane lifts the front support grouting steel pipe pile until the connection of the front support grouting steel pipe pile is pulled out.

[0044] The seventh step is to remove the connection between the front and rear front support grouting steel pipe piles, and the crane will lift the front support grouting steel pipe piles to the place where the steel pipes are placed.

[0045] Repeat the process of the sixth and seventh steps until each section of the front support grouting steel pipe pile is recovered.

[0046] The recycling device and method involved in the present invention can significantly improve the recycling rate of the front support grouting steel pipe piles, thereby significantly reducing the cost expenditure during the construction process. This innovation not only helps to improve economic benefits, but also has a positive significance for promoting carbon reduction and emission reduction during the construction process, thereby contributing to environmental protection and sustainable development.

[0047] The embodiments described above are only descriptions of the preferred modes of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations, modifications, and substitutions made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A front support grouting steel pipe pile auxiliary recovery device, characterized in that: It comprises a caliper (1), a clamping hydraulic axis (2), an upper plane (4), a lifting hydraulic axis (10) and a main plane (13); The clamping hydraulic shaft (2) is mounted on the upper plane (4), and four clamping hydraulic shafts (2) are provided. The four clamping hydraulic shafts (2) are distributed in a "cross" shape and the output ends are all distributed inwards. The output ends of the four clamping hydraulic shafts (2) are all fixedly connected to the caliper (1); The lifting hydraulic shaft (10) is installed on the main plane (13), and the output end of the lifting hydraulic shaft (10) is connected to the upper plane (4); The upper plane (4) and the main plane (13) are both provided with circular holes adapted to the front-support grouting steel pipe piles; the upper plane (4) and the main plane (13) are used to be sleeved on the front-support grouting steel pipe piles, and the clamping hydraulic shaft (2) is used to push the caliper (1) to clamp the front-support grouting steel pipe piles, and the front-support grouting steel pipe piles are moved out by the lifting hydraulic shaft (10).

2. The auxiliary recovery device for front-support grouting steel pipe piles according to claim 1 is characterized in that: The main plane (13) is mounted on a reaction fork, and the reaction fork is fixed on the ground where the front support grouting steel pipe pile is located.

3. The auxiliary recovery device for front-support grouting steel pipe piles according to claim 1 is characterized in that: A directional rod (3) is slidably provided on the side of the clamping hydraulic shaft (2), and the end of the directional rod (3) is fixedly connected to the caliper (1).

4. The auxiliary recovery device for front-support grouting steel pipe piles according to claim 1 is characterized in that: It also includes a lower plane (7), wherein the upper plane (4), the lower plane (7) and the main plane (13) are arranged from top to bottom, a connecting shaft (5) is fixed on the top of the lower plane (7), the connecting shaft (5) passes through the upper plane (4) and is connected to a nut, and a buffer spring (6) is sleeved on the connecting shaft (5).

5. The auxiliary recovery device for front-support grouting steel pipe piles according to claim 1 is characterized in that: Four lifting hydraulic shafts (10) are provided, and the four lifting hydraulic shafts (10) are arranged below the clamping hydraulic shaft (2) in a one-to-one correspondence.

6. A front support grouting steel pipe pile auxiliary recovery method, characterized in that: The auxiliary recovery device for front-support grouting steel pipe piles according to claim 1 is applied to The following steps are involved: The first step is to evenly apply the anti-friction material to the front support grouting steel pipe piles required for the front support before the foundation pit construction. Before applying, the rust or other debris on the front support grouting steel pipe piles should be cleaned to prevent the anti-friction material from falling off, in preparation for the subsequent recycling work; The second step is to measure the front support grouting steel pipe piles after the foundation pit construction is completed to obtain their inclination angle and position; The third step is to cut and level the foundation pit edge and surrounding purlins; The fourth step is to install the auxiliary recovery device and configure the crane on the reaction fork; Step 5: Connect the front support grouting steel pipe pile to the crane; Step 6: Use the auxiliary recovery device to pull out a part of the front support grouting steel pipe pile. The auxiliary recovery device pulls out the front support grouting steel pipe pile while the crane lifts the front support grouting steel pipe pile until the connection of the front support grouting steel pipe pile is pulled out. The seventh step is to remove the connection between the front and rear front support grouting steel pipe piles, and lift the front support grouting steel pipe piles by crane to the place where the steel pipe is placed. Repeat steps 6 and 7 until every section of the front support grouting steel pipe pile is recovered.

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