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CN-122013825-A - Test device and method for compression-resistant pile

CN122013825ACN 122013825 ACN122013825 ACN 122013825ACN-122013825-A

Abstract

The invention discloses a test device and a test method for compression piles, wherein the test device comprises a test pile and at least four anchor piles, a jack is arranged at the top of the test pile, a main beam is arranged at the top of the jack, secondary beams are arranged on two sides of the main beam, the test device further comprises a fastening device, the fastening device comprises a plurality of arc-shaped plates, a ring formed by combining the arc-shaped plates is clamped at the periphery of each anchor pile, and the arc-shaped plates are connected with the secondary beams through a plurality of steel bar inhaul cables. Compared with the prior art, the fastening device is formed by combining a plurality of arc plates, connecting blocks are welded on the adjacent outer side surfaces of the arc plates, the arc plates can be directly spliced to form a circular ring through bolts and are tightly clamped on the periphery of an anchor pile, and the fastening device is connected with the periphery of the anchor pile through the fastening device by using the steel bar inhaul cable secondary beam so as to form a counterforce system for balancing the acting force of the test pile in test.

Inventors

  • LIU JIA
  • GONG CHENGZHONG
  • CHEN YADONG
  • CHEN SHIJUN
  • ZHANG PENG
  • HE CHUNLIN
  • ZHOU JUNHAO

Assignees

  • 淮阴工学院

Dates

Publication Date
20260512
Application Date
20260330

Claims (10)

  1. 1. The utility model provides a test device of compressive pile, includes test pile (3) and four at least anchor piles (2), test pile (3) top is provided with jack (8), jack (8) top is provided with girder (7), girder (7) both sides are provided with secondary beam (6), wherein still include fastener (9), fastener (9) include a plurality of arc (901), a plurality of arc (901) make up the ring block in anchor pile (2) periphery, arc (901) are connected in secondary beam (6) through a plurality of reinforcing bar cable (4).
  2. 2. The test device for the compression pile according to claim 1, wherein the steel bar inhaul cable (4) comprises a frame body (401), a first steel bar (403) is inserted into the top of the frame body (401), a second steel bar (402) is inserted into the bottom of the frame body, nuts are connected with the first steel bar (403) and the second steel bar (402) in the frame body (401) in a threaded mode, nuts are connected with the top of the first steel bar (403) in a threaded mode through a secondary beam (6), and nuts are connected with the bottom of the second steel bar (402) in a threaded mode through an arc-shaped plate (901).
  3. 3. A test device for compression piles according to claim 2, wherein the cross section of the arc-shaped plate (901) is L-shaped.
  4. 4. The test device for the compression pile according to claim 1, wherein connecting blocks (902) are welded on the adjacent outer side surfaces of the arc-shaped plates (901), and the two connecting blocks (902) are connected through bolts (903).
  5. 5. A test device for compression piles according to claim 1, wherein a backing plate (11) is arranged between the jack (8) and the main beam (7).
  6. 6. The device for testing the compression pile according to any one of claims 1-5, wherein the anchor pile (2) is provided with a clamping groove (201) at the periphery, a clamping block (10) is embedded in the clamping groove (201), and one end of the clamping block (10) is located outside the clamping groove (201).
  7. 7. A method of testing a compression pile, using the test apparatus of claim 6, comprising the steps of: S1, installing a jack (8) at the top of a test pile (3) to be tested, erecting a main beam (7) at the jacking end of the jack (8), installing secondary beams (6) at two sides of the main beam (7), installing fastening devices (9) at the periphery of four anchor piles (2) arranged around the test pile (3), and enclosing and splicing a plurality of arc plates (901) of the fastening devices (9) to form a circular ring and clamping and fixing the circular ring on the periphery of a pile body of the anchor pile (2); s2, fixedly connecting the lower end of the steel bar inhaul cable (4) with an arc-shaped plate (901) on the corresponding anchor pile (2), and fixedly connecting the upper end of the steel bar inhaul cable (4) with a secondary beam (6) at a corresponding position to form a counterforce system consisting of the anchor pile (2), a fastening device (9), the steel bar inhaul cable (4), the secondary beam (6) and a main beam (7); and S3, starting the jack (8) to apply a vertical test load to the test pile (3), balancing the loading force of the jack (8) through the counter-force system, and completing the compression-resistant static load test of the test pile (3) according to a preset test procedure.
  8. 8. The method for testing a compression pile according to claim 7, wherein in the step S1, the vertical portion of the L-shaped arc plate (901) is attached to the outer wall surface of the anchor pile (2), and the transverse portion of the L-shaped arc plate (901) is used for penetrating and fixing the second steel bar (402).
  9. 9. The method for testing a compression pile according to claim 7, wherein in step S1, a clamping groove (201) is formed in the periphery of the pile body of the anchor pile (2). Then install fixture block (10) additional in draw-in groove (201), follow-up with annular structure block that arc (901) concatenation was accomplished in anchor pile (2) periphery, and make fixture block (10) be located annular structure's open-top to restrict annular structure along the vertical displacement of anchor pile (2) pile body.
  10. 10. A test method of a compression pile according to claim 7, wherein in step S2, weights are stacked on the main beams (7), and the vertical counter force reserve and anti-capsizing stability of the whole counter force system are increased, so that the weights and the anchor piles (2) provide balance counter force required by loading of the jack (8) together.

Description

Test device and method for compression-resistant pile Technical Field The invention relates to the technical field of constructional engineering, in particular to a test device and a test method for a compression-resistant pile. Background In the field of constructional engineering, the compression-resistant pile is used as a basic bearing member, and the vertical compression-resistant bearing capacity of the compression-resistant pile directly relates to the safety and stability of the whole building structure, so that the performance of the compression-resistant pile is detected through a vertical compression-resistant static load test in the engineering construction process. At present, an anchor pile reaction method is one of the most widely applied methods in a static load test of a compression-resistant pile, and the method balances test load by constructing a reaction system so as to accurately determine the compression resistance of the test pile. In order to realize connection of the anchor pile and the counterforce beam, a concrete protection layer at the top of the anchor pile is manually cut, so that a main rib in the pile body is exposed, and the anchor pile is fixed with the counterforce beam through a stay rope and other structures in a manner of welding the main rib, so that a complete counterforce system is formed, and balance counterforce is provided for test load. The counter-force system has the obvious defects that 1, a large amount of manpower and material resources are needed to be invested in cutting the concrete at the top of the anchor pile, the on-site construction workload and the test cost are increased, the structural integrity of the anchor pile can be damaged, the self bearing performance of the anchor pile is affected, 2, the operation is complex when the structures such as the anchor pile main rib and the inhaul cable are welded, the workload is large (the anchor pile main rib and the inhaul cable are multiple), the anchor pile main rib and the inhaul cable cannot be disassembled and assembled, and the cyclic reuse of the device cannot be realized. Disclosure of Invention The invention mainly aims to provide a test device and a test method for a compression-resistant pile, wherein a fastening device is formed by combining a plurality of arc plates, connecting blocks are welded on the adjacent outer side surfaces of the arc plates, a ring can be directly spliced by bolts and tightly clamped on the periphery of the anchor pile, and the fastening device passes through a steel bar inhaul cable secondary beam so as to form a reaction system, so that the acting force during test of the test pile is balanced. In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: The utility model provides a test device and method of compressive pile, includes test pile and four at least anchor piles, test pile top is provided with the jack, the jack top is provided with the girder, girder both sides are provided with the secondary beam, still include fastener, fastener includes a plurality of arc, a plurality of the ring block that the arc makes up is in anchor pile periphery, the arc passes through a plurality of reinforcing bar cable and connects in the secondary beam. Further, the reinforcing bar cable includes the framework, the framework top is inserted and is equipped with first reinforcing bar, bottom are inserted and are equipped with the second reinforcing bar, is located first reinforcing bar and the equal threaded connection of second reinforcing bar in the framework have the nut, first reinforcing bar top runs through secondary beam threaded connection has the nut, the arc threaded connection has the nut is run through to the second reinforcing bar bottom. Further, the cross section of the arc-shaped plate is L-shaped. Further, a plurality of connecting blocks are welded on the adjacent outer side surfaces of the arc-shaped plates, and the two connecting blocks are connected through bolts. Further, a backing plate is arranged between the jack and the main beam. Further, a clamping groove is formed in the periphery of the anchor pile, a clamping block is embedded in the clamping groove, and one end of the clamping block is located outside the clamping groove. The invention also discloses a test method of the anti-compression pile, which comprises the following steps: s1, installing a jack at the top of a test pile to be tested, erecting a main beam at the jacking end of the jack, installing secondary beams at two sides of the main beam, installing fastening devices at the periphery of four anchor piles arranged around the test pile, enclosing and splicing a plurality of arc plates of the fastening devices to form a circular ring and clamping and fixing the circular ring at the periphery of a pile body of the anchor pile; S2, fixedly connecting the lower end of the steel bar inhaul cable with an arc-shaped plate on the corresponding anchor pi