Tubular pile anti-pulling counter-force device

Abstract

A tubular pile end plate is fixedly arranged at the end of a tubular pile, a counterforce steel plate with a hole is connected with the tubular pile end plate, a counterforce steel column is fixed with the counterforce steel plate with the hole, a center hole jack penetrates through the counterforce steel column, a rigid base plate is placed at the top end of the jack, and the rigid base plate is fixed through a nut with a lug. The bottom end of the jack is located on the stress main beam, and a rigid base plate is additionally arranged between the stress main beam and the center hole jack; the two ends of the stress main beam are erected on the supporting stress main beam load blocks, and the supporting stress main beam load blocks are in contact with the ground to provide counter force for the pull-out test. The device is not influenced by a designed pile position, and can be used for directly carrying out an anti-pulling test on a selected pipe pile; the traditional mode that steel bars are adopted for tensile strength is avoided, the detection period is shortened, and welding work is omitted; the counter-force device is easy to disassemble, assemble and adjust.

Description

Technical Field

[0001] The utility model relates to the field of pipe pile uplift test detection, especially to a test device for the uplift detection of precast pipe piles. Background Art

[0002] When conducting an on-site uplift static load test on a pipe pile, the traditional reaction device needs to set up reaction steel bars inside the pipe pile and pour concrete to form a tensile structure for the steel bars. It is necessary to wait until the concrete age reaches the requirement, and a large amount of welding work is required. The tensile force of the poured steel bars fails to meet the requirement due to various reasons, resulting in test failures, thus greatly affecting the on-site construction progress and increasing the economic and time costs of the static load test. Content of the Utility Model

[0003] Aiming at the above existing technical problems, a reaction device for the uplift static load test of pipe piles is proposed. The materials of this device are popular, easy to manufacture, convenient for installation and disassembly, and convenient for realizing the uplift test.

[0004] In order to achieve the above utility model purpose, the utility model adopts the following technical solutions:

[0005] A pipe pile uplift reaction device includes a support force main beam load block, a pipe pile end plate, a perforated reaction steel plate, a reaction steel column, a force main beam, a rigid cushion plate, a through-hole jack, and an ear nut;

[0006] The pipe pile end plate is fixedly arranged at the end of the pipe pile;

[0007] The perforated reaction steel plate is connected with the pipe pile end plate, the reaction steel column is fixed to the perforated reaction steel plate, the through-hole jack passes through the reaction steel column, a rigid cushion plate is placed at the top end of the jack, and the rigid cushion plate is fixed by an ear nut. The bottom end of the jack is seated on the force main beam, and a rigid cushion plate is added between the force main beam and the through-hole jack;

[0008] Both ends of the force main beam are erected on the support force main beam load block, and the support force main beam load block provides reaction force for the uplift test by contacting the ground.

[0009] The further technology of the utility model:

[0010] Preferably, the diameter of the perforated reaction steel plate is the same as that of the pipe pile end plate. There are threaded holes on the pipe pile end plate, and the holes on the perforated reaction steel plate are threaded holes, which correspond to the threaded holes on the pipe pile end plate one by one. The two are connected by high-strength full-threaded columns and fixed with bolts.

[0011] Preferably, both ends of the reaction steel column have threads, and the reaction steel column and the perforated reaction steel plate are fixed by passing through fixed nuts.

[0012] The beneficial effects of the utility model are:

[0013] The utility model is not affected by the designed pile position and can directly carry out pull-out test on the selected pipe pile; it avoids the traditional use of steel bar for pull-out, saves the detection cycle, and eliminates the welding work; the reaction force device is easy to disassemble and adjust; the manufacturing materials are common, the cost is low, the manufacturing process is simple, and it is easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 It is a structural schematic diagram of a pipe pile anti-pullout reaction force device;

[0016] Figure 2 It is a partial structural schematic diagram of a pipe pile anti-pullout reaction device;

[0017] Explanation of the reference numerals: 1- load block supporting the load-bearing main beam; 2- pipe pile end plate; 3- reaction steel plate with holes; 4- high-strength full-thread column; 5- bolt; 6- fixing nut; 7- reaction steel column with threads at both ends; 8- load-bearing main beam; 9- rigid pad; 10- through-hole jack; 11- ear nut; 12- rib. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be further described in detail below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model but not all. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0019] like Figure 1-2 As shown, a pipe pile anti-pullout reaction device includes a load block 1 for supporting a load-bearing main beam, a reaction steel plate with holes 3, a high-strength fully threaded column 4, a bolt 5, a fixing nut 6, a reaction steel column with threads at both ends 7, a load-bearing main beam 8, a rigid pad 9, a through-hole jack, and an ear nut 11. The steel required for making the reaction device is common and easy to process.

[0020] The pipe pile end plate 2 is fixedly arranged at the end of the pipe pile;

[0021] The perforated reaction steel plate 3 can be provided with holes according to the number of headed anchor holes on the pile end plate 2 of the pipe pile. High-strength full-threaded columns 4 are used to connect the perforated reaction steel plate 3 and the pile end plate 2 of the pipe pile, and bolts 5 are used to fix the two; the reaction steel columns 7 with threads at both ends pass through the perforated reaction steel plate 3, and fixing nuts 6 are used to fix the reaction steel columns and the reaction steel plate; the through-hole jack 10 passes through the reaction steel columns and is seated on the stressed main beam 8. A rigid cushion plate 9 is placed at the top end of the jack, and an ear nut 11 is used for fixing on the rigid cushion plate 9. The bottom end of the jack is seated on the stressed main beam 8, and a rigid cushion plate 9 is added between the stressed main beam 8 and the through-hole jack 10;

[0022] Both ends of the stressed main beam 8 are erected on the support stressed main beam load blocks 1, and the support stressed main beam load blocks 1 provide reaction force for the uplift test by contacting the ground.

[0023] It should be noted that the perforated reaction steel plate 3 can be made into a steel plate shape according to the pile type. For circular pipe piles, the reaction steel plate can be made into a circular shape, and for square pipe piles, the reaction steel plate can be made into a square shape.

[0024] The perforated reaction steel plate 3 can adjust the steel plate size according to the pile diameter. For large pile diameter steel plates, in order to increase rigidity, ribs 12 can be added on the upper and lower surfaces of the reaction steel plate to make the steel plate not easy to deform.

[0025] The perforated reaction steel plate 3 can be provided with holes according to the number of headed anchor holes on the pile end plate 2 of the pipe pile. The center of the reaction steel plate is provided with a hole for the free passage of the reaction steel column.

[0026] The lower ends of the reaction steel columns 7 with threads at both ends can be fixed to the stressed steel plate with bolts 5, and the upper ends can be fixed to the upper steel cushion plate of the jack with ear nuts 11.

[0027] The stressed main beam 8 and the reaction steel columns are made of manganese steel, which has high rigidity and meets the requirements of uplift force.

[0028] The above content is only an example and description of the structure of the present invention. Those skilled in the art of this technology can make various modifications or supplements to the described specific embodiments or use similar methods to replace them. As long as they do not deviate from the structure of the invention or exceed the scope defined by this claim book, they should all belong to the protection scope of the present invention.

Claims

1. A pipe pile anti-pullout reaction device, characterized in that: It includes a load block supporting the main beam, a pipe pile end plate, a reaction steel plate with holes, a reaction steel column, a main beam, a rigid pad, a through-hole jack and lug nuts; The pipe pile end plate is fixedly arranged at the end of the pipe pile; The reaction steel plate with holes is connected to the end plate of the pipe pile, the reaction steel column is fixed to the reaction steel plate with holes, the through-hole jack passes through the reaction steel column, a rigid pad is placed on the top of the jack, and the rigid pad is fixed with lug nuts, the bottom of the jack is located on the load-bearing main beam, and a rigid pad is added between the load-bearing main beam and the through-hole jack; The two ends of the load-bearing main beam are mounted on load blocks supporting the load-bearing main beam, and the load blocks supporting the load-bearing main beam provide reaction force for the pull-out test by contacting the ground.

2. According to the pipe pile anti-pullout reaction force device described in claim 1, it is characterized in that: The diameter of the reaction steel plate with holes is the same as that of the end plate of the pipe pile. The end plate of the pipe pile is provided with threaded holes. The holes of the reaction steel plate with holes are threaded holes, which correspond one to one with the threaded holes on the end plate of the pipe pile. The two are connected by a high-strength full-threaded column and fixed with bolts.

3. According to the pipe pile anti-pullout reaction force device described in claim 1, it is characterized in that: Both ends of the reaction steel column are provided with threads, and the reaction steel column and the reaction steel plate with holes are fixed by passing through fixing nuts.

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