A pipe pile bending and shearing resistance test device

Abstract

The present application relates to the technical fields of pipe pile bending resistance test, and discloses a pipe pile bending resistance and shearing resistance test device, which comprises a support, a first guide rail, the support is located on one side of the first guide rail, and the first guide rail is fixed on the ground. The bottom of the support is provided with a base, the side of the first guide rail is provided with a second guide rail parallel to the extension direction of the first guide rail, the base is supported on the top of the second guide rail and can move on the second guide rail, the second guide rail is provided with a locking mechanism, and the locking mechanism can lock and fix the support after movement on the second guide rail. By setting the base and the second guide rail, if different positions of the pipe pile need to be tested respectively, the second base at the bottom of the support only needs to be moved on the second guide rail each time, so that the support can be quickly moved to the corresponding to-be-tested position on the pipe pile, time and labor are saved, the position of the support is locked by cooperating with the locking mechanism, the subsequent test is stably carried out, and the test efficiency is high.

Description

Technical Field

[0001] This invention relates to the field of pipe pile bending resistance testing technology, and in particular to a pipe pile bending and shear resistance testing device. Background Technology

[0002] Pipe piles are an important type of foundation material, widely used in foundation engineering of various buildings due to their advantages such as high single pile bearing capacity, fast construction speed, and good bending resistance. According to the relevant requirements of my country's current standard for prestressed concrete pipe piles (GB1376-2009), pipe piles should undergo corresponding bending tests upon leaving the factory. Furthermore, given the research needs of scientific research institutions, shear tests are often also required for the pipe piles.

[0003] Chinese utility model patent CN210507565U discloses an integrated device for testing the bending and shear strength of pipe piles. The device includes a gantry frame, a track, and sliding supports. At least two sliding supports are connected to the track via rollers at their bottoms. Support pads are placed above the sliding supports. The gantry frame spans both sides of the sliding supports and is fixed to the ground outside the track. A transmission column, a load generator, and a load distribution beam are vertically connected sequentially below the top beam of the gantry frame. Adjustable pulleys are fixedly installed on the lower surface of the load distribution beam. The pressure pads are slidably connected to the load distribution beam via the adjustable pulleys. This utility model not only solves the problems of difficult pile hoisting and complex equipment disassembly in pipe pile testing, but also allows for adjustable positions of the pressure pads and supports, enabling bending and shear tests on pipe piles of different lengths. It is highly applicable and practical.

[0004] However, the aforementioned utility model patent has certain drawbacks. Due to the heavy actual weight of the pipe pile, and the fact that the gantry in the patented technology is fixed to the ground outside the track, if it is necessary to test different positions of the pipe pile separately, the sliding support that is pre-loaded with the pipe pile needs to be moved relative to the gantry on the track before each test to adjust the corresponding test position on the pipe pile to below the gantry. This process is not only time-consuming and labor-intensive, but also inconvenient and has low test efficiency, thus having limitations. Summary of the Invention

[0005] To address the technical problems mentioned in the background section, this invention provides a test device for the bending and shear resistance of pipe piles.

[0006] This invention is achieved using the following technical solution: a pipe pile bending and shear resistance testing device, comprising a support, a first guide rail, a supporting mechanism, and a loading mechanism. The support is located on one side of the first guide rail, and the first guide rail is fixed to the ground. The supporting mechanism is movably mounted on the first guide rail and is capable of carrying and transporting the pipe pile to be tested. The loading mechanism is mounted on the support and is capable of applying a load to the pipe pile.

[0007] The bracket has a base at its bottom, and a second guide rail parallel to the extension direction of the first guide rail is provided on one side of the first guide rail. The base is supported on the top of the second guide rail and can move on the second guide rail.

[0008] The second guide rail is provided with a locking mechanism, which can lock and fix the moved bracket to the second guide rail.

[0009] As a further improvement to the above solution, the supporting mechanism includes at least two sliding supports, the bottom of which is rolledly connected to the first guide rail via pulleys, and the top of which is provided with a support pad adapted to the pipe pile.

[0010] As a further improvement to the above solution, the loading mechanism includes a force transmission column, a load generator, and a load distribution beam that are fixedly connected to the support from top to bottom. The upper center of the load distribution beam is fixedly connected to the load generator. An adjusting pulley is fixedly installed on the lower surface of the load distribution beam. The lower part of the adjusting pulley is embedded in the hanging rail. A pressure pad adapted to the pipe pile is fixed at the bottom of the hanging rail. A pressure sensor is installed on the load generator.

[0011] As a further improvement to the above solution, a first track block and a second track block are arranged opposite to each other on both sides of the bottom of the base. The first track block has an L-shaped structure, and the second guide rail is provided with a first track groove and a second track groove, respectively. The first track block and the second track block are slidably engaged in the first track groove and the second track groove, respectively.

[0012] As a further improvement to the above solution, a third track groove is provided at the top of the second guide rail, parallel to its extension direction and connected to the second track groove. A roller is provided in the third track groove and rolls in contact with the bottom wall of the groove. The roller is rotatably mounted on the connecting post. The other end of the connecting post is vertically fixed to the side wall of the second track block near the bottom.

[0013] As a further improvement to the above solution, the roller includes a hub, which is rotatably sleeved on the outside of the connecting column, and a ring body is concentrically fixed on the side of the hub near the first track groove, which rolls in contact with the bottom wall of the third track groove.

[0014] As a further improvement to the above solution, the locking mechanism includes a worm gear, a transmission assembly, and a locking assembly. The worm gear is rotatably inserted into the top of the base, and the transmission assembly is disposed in the second track block and the connecting column, and is driven by the rotation of the worm gear to lock and fix the hub to the connecting column.

[0015] As a further improvement to the above solution, the locking assembly includes a first disc body, which is concentrically housed within the inner side of the ring body. A plurality of first limiting grooves are arranged circumferentially around the side of the first disc body facing the wheel hub. The first limiting grooves converge and tilt inwards, and a first limiting block is slidably engaged within the groove. A locking rod is arranged radially along the centrifugal side of the first limiting block on the first disc body. A second limiting groove is circumferentially formed on the side of the wheel hub facing the first disc body. A plurality of second limiting blocks parallel to the axial direction of the wheel hub are slidably engaged within the second limiting groove. Each second limiting block has a first through groove through which the corresponding locking rod slides. A plurality of first locking grooves are formed on the inner circumferential sidewall of the ring body to engage with the corresponding locking rod.

[0016] As a further improvement to the above solution, the transmission assembly includes a screw, which is rotatably and coaxially inserted into the connecting post. A first threaded hole that mates with the screw is opened at the center of the first disc. One end of the screw located inside the connecting post extends into the second track block and is fixed with a first bevel tooth. A second bevel tooth that mates with the first bevel tooth is provided inside the second track block. A worm wheel that mates with the worm gear is coaxially fixed on the second bevel tooth.

[0017] As a further improvement to the above solution, a second disc is provided at an interval on the side of the first disc facing the first track block, concentric with it. A second threaded hole that mates with the screw is opened at the center of the second disc. The threads distributed in the first threaded hole and the second threaded hole have opposite directions. A telescopic rod is provided between the second disc and the first disc. A second locking block is formed by protruding outward at the center of the side of the second disc away from the first disc. A second locking groove that mates with the second locking block is opened on the end face of the horizontal section of the first track block. A second through groove that connects the first track groove and the third track groove is opened on the second guide rail. The second through groove allows the second locking block to pass through.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. The pipe pile bending and shear resistance test device of the present invention, by setting a base and a second guide rail, if it is necessary to test different positions of the pipe pile separately, each time only the support needs to be pushed so that the second base at its bottom moves on the second guide rail, so that the support can be quickly moved to the corresponding test position on the pipe pile, saving time and effort. In addition, the locking mechanism locks the position of the support to ensure the stable conduct of subsequent tests and the test efficiency is high.

[0020] 2. The pipe pile bending and shear resistance test device of the present invention, by setting up a worm gear, a transmission assembly and a locking assembly, when the support needs to be fixed after movement, only the worm gear needs to be rotated to lock the roller on the connecting column and the roller between the first track blocks, so as to securely lock the moved support on the second guide rail and ensure that the subsequent load test is carried out smoothly.

[0021] 3. The pipe pile bending and shear resistance testing device of the present invention, by setting up annular groove, elastic layer, plug groove, piston and other structures, when the support moves, under the action of spring force, the piston is located in the plug groove near one end of the annular groove. At this time, the elastic layer is in a state of pressurized expansion deformation. Then, through the contact between the elastic layer and the bottom wall of the third track groove, not only can the noise of the support movement be reduced, but also the traction force required to push the support can be reduced. When the support is locked on the second guide rail after moving, when the locking rod is locked into the first locking groove, the first rack will drive the second rack and the transmission rod to move centripetally through the transmission gear, thereby driving the piston to move centripetally in the plug groove, so as to generate negative pressure to absorb the hydraulic oil in the annular groove, so that the hydraulic oil in the annular groove is reduced, causing the elastic layer to contract, increasing the contact area between the elastic layer and the bottom wall of the third track groove, making the placement of the support on the second guide rail more stable, convenient and reliable. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 for Figure 1 A partial cross-sectional view of the base and the second guide rail (with the rollers in an unlocked state);

[0024] Figure 3 for Figure 2 A partial cross-sectional structural diagram of the middle base and the second guide rail (with the rollers in a locked state);

[0025] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0026] Figure 5 for Figure 3 Enlarged structural diagram at point B;

[0027] Figure 6 for Figure 3 Enlarged structural diagram at point C;

[0028] Figure 7 for Figure 4 Enlarged structural diagram at point D;

[0029] Figure 8 for Figure 2Enlarged structural diagram at point E in the middle.

[0030] Explanation of key symbols:

[0031] 1. Bracket; 2. First guide rail; 3. Sliding support; 4. Support pad; 5. Force transmission column; 6. Load generator; 7. Load distribution beam; 8. Adjusting pulley; 9. Hanging rail; 10. Pressure pad; 11. Base; 12. Second guide rail; 13. First track block; 14. First track groove; 15. Hub; 16. Third track groove; 17. Second track block; 18. Second track groove; 19. Worm gear; 20. Connecting column; 21. Ring body; 22. First disc body; 23. First threaded hole; 24. Screw; 25. First limiting groove; 26. 1. First limiting block; 27. Locking rod; 28. Second limiting block; 29. ​​Second limiting groove; 30. First locking groove; 31. First through groove; 32. First bevel tooth; 33. Second bevel tooth; 34. Worm gear; 35. Second disc; 36. Second locking block; 37. Second threaded hole; 38. Telescopic rod; 39. Second through groove; 40. Second locking groove; 41. Annular groove; 42. Elastic layer; 43. First rack; 44. Transmission gear; 45. Transmission rod; 46. Second rack; 47. Plug groove; 48. Piston; 100. Pipe pile. Detailed Implementation

[0032] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0033] Example 1

[0034] Please combine Figures 1 to 8 The pipe pile bending and shear resistance testing device includes a support 1, a first guide rail 2, a support mechanism, and a loading mechanism. The support 1 is located on one side of the first guide rail 2, and the first guide rail 2 is fixed to the ground. The support mechanism is movably mounted on the first guide rail 2 and can carry and transport the pipe pile to be tested. The loading mechanism is mounted on the support 1 and can apply load to the pipe pile to conduct bending and shear resistance tests.

[0035] The bracket 1 has a base 11 fixed at its bottom. The first guide rail 2 has a second guide rail 12 fixed on one side, which is parallel to its extension direction. The base 11 is supported on the top of the second guide rail 12 and can move on the second guide rail 12.

[0036] A locking mechanism is provided on the second guide rail 12, which can lock and fix the moved bracket 1 to the second guide rail 12.

[0037] The supporting mechanism includes at least two sliding supports 3. The bottom of the sliding supports 3 is connected to the first guide rail 2 by a pulley (not shown). The top of the sliding supports 3 is provided with a support pad 4 adapted to the pipe pile.

[0038] The loading mechanism includes a force transmission column 5, a load generator 6, and a load distribution beam 7, which are fixedly connected to the support 1 from top to bottom. The upper center of the load distribution beam 7 is fixedly connected to the load generator 6. An adjusting pulley 8 is fixedly installed on the lower surface of the load distribution beam 7. The lower part of the adjusting pulley 8 is embedded in the hanging rail 9. A pressure pad 10 adapted to the pipe pile is fixed at the bottom of the hanging rail 9. A pressure sensor is installed on the load generator 6. The load generator 6 can be a hydraulic jack.

[0039] Before conducting the bending and shear tests, the spacing between the sliding supports 3 is adjusted by pulleys until it matches the pipe pile to be tested. Since the support 1 has an L-shaped structure, the pipe pile to be tested can be hoisted onto the support 4 perpendicular to the extension direction of the first guide rail 2. The support 1 is then slid along the second guide rail 12 via the base 11 to the appropriate position for the pipe pile test. This method is convenient, reliable, time-saving, labor-saving, and improves experimental efficiency.

[0040] The experimental steps in this embodiment are as follows:

[0041] According to the requirements of the specification, the load is gradually applied through the load generator 6, and the load is transferred to the load distribution beam 7 through the support 1 and the force transmission column 5. Finally, the load is applied to the pipe pile through the two pressure pads 10. After the test is completed, the load of the load generator 6 is removed, and the pipe pile can be directly lifted down.

[0042] To enable the bracket 1 to move relative to the second guide rail 12 via the base 11, this embodiment provides a first track block 13 and a second track block 17 opposite to each other on both sides of the bottom of the base 11. The first track block 13 has an L-shaped structure, and the second track block 17 has a columnar structure. The second guide rail 12 has a first track groove 14 and a second track groove 18 respectively, and the first track block 13 and the second track block 17 are slidably engaged in the first track groove 14 and the second track groove 18 respectively.

[0043] Furthermore, a third track groove 16 is provided at the top of the second guide rail 12, parallel to its extension direction and connected to the second track groove 18. A roller (not shown) is provided in the third track groove 16 and rolls in contact with the bottom wall of the groove. The roller is rotatably mounted on the connecting column 20. The other end of the connecting column 20 is vertically fixed to the side wall of the second track block 17 near the bottom. This allows the support 1 to move in the extension direction of the second guide rail 12 to adjust the load applied to the pipe pile at different positions to meet experimental requirements.

[0044] Specifically, the roller includes a hub 15, which is rotatably fitted onto the outside of the connecting post 20. A rotating hole (not shown) is formed in the center of the hub 15, through which the connecting post 20 passes, allowing the hub 15 to rotate relative to the connecting post 20. A ring 21, which rolls in contact with the bottom wall of the third track groove 16, is concentrically fixed to the side of the hub 15 closest to the first track groove 14, facilitating the movement of the base 11 on the second guide rail 12.

[0045] The locking mechanism includes a worm gear 19, a transmission assembly, and a locking assembly. The worm gear 19 is rotatably inserted into the top of the base 11. The transmission assembly is located in the second track block 17 and the connecting column 20. Driven by the rotation of the worm gear 19, it can lock the hub 15 onto the connecting column 20, thereby locking the moved bracket 1 onto the second guide rail 12 to ensure the stability of subsequent experimental processes.

[0046] The locking assembly includes a first disc body 22, which is concentrically housed inside the ring body 21. Multiple first limiting grooves 25 are arranged circumferentially around the side of the first disc body 22 facing the hub 15. The first limiting grooves 25 converge inwards and are inclined, with first limiting blocks 26 slidably engaged within them. Each first limiting block 26 has a locking rod 27 arranged radially along the centrifugal side of the first disc body 22. A second limiting groove 29 is circumferentially formed on the side of the hub 15 facing the first disc body 22. Multiple second limiting blocks 28 parallel to the axial direction of the hub 15 are slidably engaged in the second limiting groove 29. Each second limiting block 28 has a first through groove 31 through which the corresponding locking rod 27 can slide. Multiple first locking grooves 30 are formed on the inner circumferential sidewall of the ring body 21 to engage with the corresponding locking rod 27.

[0047] The transmission assembly includes a screw 24, which is rotatably and coaxially inserted into the connecting post 20. A first threaded hole 23 that mates with the screw 24 is provided at the center of the first disc 22. One end of the screw 24 located inside the connecting post 20 extends into the second track block 17 and is fixed with a first bevel tooth 32. The second track block 17 is provided with a second bevel tooth 33 that mates with the first bevel tooth 32. A worm wheel 34 that mates with the worm 19 is coaxially fixed on the second bevel tooth 33.

[0048] The first disc 22 is provided with a second disc 35 concentric with it on the side facing the first track block 13. The center of the second disc 35 is provided with a second threaded hole 37 that mates with the screw 24. The threads distributed in the first threaded hole 23 and the second threaded hole 37 have opposite directions of rotation, and the external threads distributed on the outer wall of the screw 24 corresponding to the two threaded hole positions also have opposite directions of rotation.

[0049] A telescopic rod 38 is provided between the second disc 35 and the first disc 22. The center of the second disc 35 away from the first disc 22 protrudes outward to form a second locking block 36. A second locking groove 40 that cooperates with the second locking block 36 is provided on the end face of the horizontal section of the first track block 13. A second through groove 39 that connects the first track groove 14 and the third track groove 16 is provided on the second guide rail 12. The second through groove 39 allows the second locking block 36 to pass through.

[0050] The working principle of this embodiment:

[0051] When the bracket 1 moves, it can move in the third track groove 16 through the hub 15 and ring 21 of the roller. During this process, the connecting column 20 is fixed. After the hub 15 and ring 21 are subjected to force, they roll together around the connecting column 20 in the third track groove 16. The second limiting groove 29 is designed in a ring shape to avoid the second limiting block 28 interfering with the rotation of the hub 15.

[0052] When the bracket 1 moves to the position to be tested, it is only necessary to rotate the worm gear 19 to drive the worm wheel 34, the second bevel tooth 33, the first bevel tooth 32, and the screw 24 to rotate, so that the screw 24 meshes with the first threaded hole 23 and the second threaded hole 37 respectively. Since the threads distributed in the first threaded hole 23 and the second threaded hole 37 have opposite directions of rotation, the rotation of the screw 24 will cause the first disc 22 to move towards the hub 15 under the limiting action of the first limiting groove 25, the first limiting block 26, the locking rod 27, the second limiting block 28, and the second limiting groove 29. As a result, the groove wall of the first limiting groove 25 will squeeze and force the first limiting block 26 to move towards the hub 15. 6. The roller moves centrifugally and gradually engages in the first slot 30 under the limiting action of the first through slot 31, indirectly fixing the roller on the connecting column 20. At the same time, the screw 24 engages with the second threaded hole 37, causing the second disc 35 to drive the second locking block 36 through the second through slot 39 and then engage in the second slot 40 of the first track block 13 under the limiting action of the telescopic rod 38, thus locking the roller with the first track block 13. Furthermore, since the roller is fixed on the connecting column 20, the roller is further locked, thus firmly locking the moved bracket 1 onto the second guide rail 12, ensuring that subsequent load experiments proceed smoothly.

[0053] Example 2

[0054] Please combine Figures 1 to 8This embodiment is an improvement on embodiment 1. In order to reduce the noise generated when the support 1 moves and reduce the traction force required to push the support 1, an annular groove 41 is opened on the outer periphery of the ring body 21. An elastic layer 42 is provided at the groove opening of the annular groove 41 to completely cover the groove opening. The elastic layer 42 can be a rubber layer. Hydraulic oil is contained in the annular groove 41. A plug groove 47 is opened inside the ring body 21 corresponding to the position of each first slot 30, which connects to the annular groove 41. A piston 48 is installed in the plug groove 47. A transmission rod 45 is fixed at the centripetal end of the piston 48. A spring (not shown) is sleeved on the outside of the transmission rod 45. The two ends of the spring are respectively fixed to the groove wall of the plug groove 47 on the centripetal side and the side wall of the piston 48 on the centripetal side.

[0055] A second rack 46 is axially arranged on the outer side of the centripetal end of the transmission rod 45. A transmission gear 44 that meshes with the second rack 46 is installed inside the ring body 21. A first rack 43 that meshes with the transmission gear 44 is axially arranged on the outer side of the centrifugal side of the clamp rod 27.

[0056] In this embodiment, when the bracket 1 is moving, under the action of the spring force, the piston 48 is located in the groove 47 near one end of the annular groove 41. At this time, the elastic layer 42 is in a state of pressurized expansion and deformation. Then, through the contact between the elastic layer 42 and the bottom wall of the third track groove 16, not only can the noise of the bracket 1 moving be reduced, but the traction force required to push the bracket 1 can also be reduced.

[0057] When the bracket 1 is locked on the second guide rail 12 after being moved, when the locking rod 27 is engaged in the first locking groove 30, the first rack 43 will drive the second rack 46 and the transmission rod 45 to move centripetally through the transmission gear 44, thereby driving the piston 48 to move centripetally in the plug groove 47, so as to generate negative pressure to absorb the hydraulic oil in the annular groove 41, reduce the amount of hydraulic oil in the annular groove 41, and cause the elastic layer 42 to contract, increasing the contact area between the elastic layer 42 and the bottom wall of the third track groove 16, making the placement of the bracket 1 on the second guide rail 12 more stable, convenient and reliable.

[0058] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A test device for the bending and shear resistance of pipe piles, characterized in that, The device includes a support frame, a first guide rail, a support mechanism, and a loading mechanism. The support frame is located on one side of the first guide rail, which is fixed to the ground. The support mechanism is movably mounted on the first guide rail and can carry the pipe pile to be tested. The loading mechanism is mounted on the support frame and can apply a load to the pipe pile. The bracket has a base at its bottom, and a second guide rail parallel to the extension direction of the first guide rail is provided on one side of the first guide rail. The base is supported on the top of the second guide rail and can move on the second guide rail. The second guide rail is provided with a locking mechanism, which can lock and fix the moved bracket to the second guide rail. The base has a first track block and a second track block arranged opposite to each other on both sides. The first track block has an L-shaped structure. The second guide rail has a first track groove and a second track groove respectively. The first track block and the second track block are slidably engaged in the first track groove and the second track groove respectively. The top of the second guide rail is provided with a third track groove that is parallel to its extension direction and communicates with the second track groove. A roller is provided in the third track groove that rolls in contact with the bottom wall of the groove. The roller is rotatably mounted on a connecting post. The other end of the connecting post is vertically fixed to the side wall of the second track block near the bottom. The roller includes a hub, which is rotatably sleeved on the outside of the connecting column. A ring is concentrically fixed on the side of the hub near the first track groove, which rolls in contact with the bottom wall of the third track groove. The locking mechanism includes a worm gear, a transmission assembly, and a locking assembly. The worm gear is rotatably inserted into the top of the base. The transmission assembly is disposed in the second track block and the connecting column, and is driven by the rotation of the worm gear to lock the hub to the connecting column. The locking assembly includes a first disc body, which is concentrically housed within the inner side of the ring body. Multiple first limiting grooves are arranged circumferentially around the side of the first disc body facing the wheel hub. These first limiting grooves converge inwards and are inclined, with a first limiting block slidably engaged within each groove. A locking rod is arranged radially along the centrifugal side of each first limiting block. A second limiting groove is circumferentially formed on the side of the wheel hub facing the first disc body. Multiple second limiting blocks parallel to the axial direction of the wheel hub are slidably engaged within the second limiting groove. Each second limiting block has a first through-slot through which the corresponding locking rod slides. Multiple first locking slots are formed on the inner circumferential sidewall of the ring body, engaging with the corresponding locking rod. The transmission assembly includes a screw, which is rotatably and coaxially inserted into the connecting post. A first threaded hole that mates with the screw is opened at the center of the first disc. One end of the screw located inside the connecting post extends into the second track block and is fixed with a first bevel tooth. A second bevel tooth that mates with the first bevel tooth is provided inside the second track block. A worm wheel that mates with the worm gear is coaxially fixed on the second bevel tooth. A second disc, concentric with the first track block, is provided on the side of the first disc facing the first track block. A second threaded hole, which mates with the screw, is provided at the center of the second disc. The threads in the first and second threaded holes have opposite directions. A telescopic rod is provided between the second disc and the first disc. A second locking block is formed by an outward protrusion at the center of the side of the second disc away from the first disc. A second locking groove, which mates with the second locking block, is provided on the end face of the horizontal section of the first track block. A second through groove, which connects the first track groove and the third track groove, is provided on the second guide rail. The second through groove allows the second locking block to pass through.

2. The pipe pile bending and shear resistance testing device as described in claim 1, characterized in that, The supporting mechanism includes at least two sliding supports, the bottom of which is connected to the first guide rail by pulleys, and the top of which is provided with a support pad adapted to the pipe pile.

3. The pipe pile bending and shear resistance testing device as described in claim 1, characterized in that, The loading mechanism includes a force transmission column, a load generator, and a load distribution beam that are fixedly connected to the support from top to bottom. The upper center of the load distribution beam is fixedly connected to the load generator. An adjusting pulley is fixedly installed on the lower surface of the load distribution beam. The lower part of the adjusting pulley is embedded in the hanging rail. A pressure pad adapted to the pipe pile is fixed at the bottom of the hanging rail. A pressure sensor is installed on the load generator.

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