Rock-socketed pile model test device
By introducing vibrating structures and hydraulic systems into the rock-embedded pile model test device, the shortcomings of the existing devices in simulated earthquake and side pressure testing are solved, and more accurate and reliable test results are achieved, improving the safety and evaluation capabilities of the test.
Patent Information
- Application Number
- CN202421322997.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-11
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-06-11
AI Technical Summary
The existing rock-embedded pile model test device cannot accurately reflect the interaction between soil and structure when simulating seismic loading, and the lateral pressure test is limited, which affects the reliability and repeatability of the test results.
A rock-embedded pile model test device is designed, including a first vibration structure and a second vibration structure. By performing vertical and horizontal vibration on the model box, the pressure plate is driven to move through the hydraulic cylinder and the tooth ring, the side pressure test of the pile body is realized.
The device can accurately simulate the interaction between soil and structure during earthquakes, improve the safety and reliability of the test results, and enhance the evaluation of pile bearing performance through all-round side pressure testing.
Smart Images
Figure CN222575580U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rock and soil mechanics test and pile foundation, in particular to a rock-embedded pile model test device. Background Art
[0002] Rock-embedded piles are a common foundation engineering structure. In order to ensure their stability and bearing capacity during their design and construction, various tests are usually required. The rock-embedded pile model test device is an experimental device used to simulate the stress behavior of rock-embedded piles in actual engineering. Through the physical simulation of the pile body and the surrounding soil, the bearing capacity, deformation characteristics and interaction between the rock-embedded pile and the rock mass under different design schemes can be evaluated.
[0003] In the prior art, pull-out tests are generally performed on piles without vibration tests. If there is no effective vibration structure to simulate earthquake loading, the test results may not accurately reflect the interaction between soil and structure during an earthquake, resulting in unrealistic earthquake loading, affecting the reliability and accuracy of the test results. The test results may be affected by external factors, making the test results difficult to repeat, reducing the reliability and repeatability of the test results. The horizontal lateral pressure test on the pile is always performed in a fixed position. Fixing the hydraulic rod at the pile position means that the lateral pressure can only be performed along the direction of the hydraulic rod, which may limit the comprehensive evaluation of the lateral bearing performance of the pile. Utility Model Content
[0004] The utility model aims to provide a rock-embedded pile model test device to solve the problems raised in the above background technology.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A rock-embedded pile model test device comprises a supporting structure, wherein the supporting structure comprises a bottom plate and a fixed box, the fixed box is fixedly installed on the top of the bottom plate, a model structure is arranged inside the fixed box, the model structure comprises a model box, a first vibration structure is arranged inside the fixed box, a transmission structure is arranged on one side of the fixed box, a second vibration structure is arranged on one side of the model box, a lifting structure is arranged on the top of the bottom plate, the lifting structure comprises a fixed plate, and a side pressure structure is arranged on the top of the fixed plate.
[0007] As a further solution of the utility model: the model structure includes a model box and a spring, the model box is fixedly installed on the bottom and side walls of the fixed box through the spring, a rock is fixedly installed at the bottom of the model box, a pile is arranged on the rock, and the interior of the model box and the top of the rock are filled with natural soil.
[0008] As a further solution of the utility model: the first vibration structure includes a first rotating shaft and a first motor, the first rotating shaft is rotatably installed inside the fixed box, the first rotating shaft is installed outside the fixed box, the motor shaft of the first motor is fixedly connected to one end of the first rotating shaft, and a cam is fixedly installed on the first rotating shaft.
[0009] As a further solution of the utility model: the transmission structure includes a support frame, the support frame is fixedly installed on one side of the fixed box, the second rotating shaft is rotatably installed on the support frame, the second gear is fixedly installed on the bottom end of the second rotating shaft, and the first gear is fixedly installed on one end of the first rotating shaft, and the first gear and the second gear are meshed with each other.
[0010] As a further solution of the utility model: the second vibration structure includes a turntable, which is fixedly mounted on the top end of the second rotating shaft, and an eccentrically rotatably connected crank is mounted on the turntable, and a connecting rod is rotatably mounted on one end of the crank away from the turntable, and an articulated seat is fixedly mounted on the side of the model box, and the connecting rod is rotatably connected to the articulated seat at one end away from the crank.
[0011] As a further solution of the utility model: the lifting structure includes a rotating base, the rotating base is fixedly installed on the top of the base plate, the telescopic cylinder is fixedly installed on the top of the rotating base, the top of the telescopic rod of the telescopic cylinder is fixedly installed on the fixed plate, and a circular through groove is arranged on the fixed plate.
[0012] As a further solution of the utility model: the side pressure structure includes a third gear, the third gear is rotatably installed on the top of the fixed plate, the second motor is installed on the bottom end of the fixed plate, the motor shaft of the second motor is fixedly connected to the third gear, the top of the fixed plate is rotatably installed with a gear ring, the gear ring and the third gear are meshed with each other, the top of the gear ring is fixedly installed with a hydraulic cylinder, and the pressure plate is fixedly installed on the telescopic rod of the hydraulic cylinder.
[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0014] 1. The model box is vibrated vertically and horizontally by the first vibration structure and the second vibration structure to simulate earthquakes, and the vertical and horizontal vibrations of the model box are accurately controlled to simulate the interaction between soil and structure during earthquakes, so that the pile test results are closer to the actual earthquake situation, with higher safety, and earthquake loading tests can be carried out in a relatively safe environment, reducing risks;
[0015] 2. The rotation of the gear ring drives the hydraulic cylinder to rotate 360 degrees. The hydraulic cylinder drives the pressure plate to move and squeeze the pile body to simulate the lateral pressure on the pile body. The pile body can be horizontally compressed at any angle, thereby achieving a full-scale test of the performance of the pile body under various lateral loads, and more realistically simulating the load conditions in actual projects. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a three-dimensional schematic diagram of the utility model.
[0017] Figure 2 It is a cross-sectional structural schematic diagram of the utility model.
[0018] Figure 3 It is a schematic diagram of the side pressure structure of the utility model.
[0019] Notes on the accompanying drawings: 1. Support structure; 11. Base plate; 12. Fixed box; 2. Model structure; 21. Model box; 22. Spring; 23. Natural soil; 24. Pile; 3. First vibration structure; 31. First rotating shaft; 32. First motor; 33. Cam; 4. Transmission structure; 41. Support frame; 42. Second rotating shaft; 43. First gear; 44. Second gear; 5. Second vibration structure; 51. Turntable; 52. Crank; 53. Connecting rod; 6. Lifting structure; 61. Rotating base; 62. Telescopic cylinder; 63. Fixed plate; 7. Side pressure structure; 71. Third gear; 72. Gear ring; 73. Second motor; 74. Hydraulic cylinder; 75. Pressure plate. DETAILED DESCRIPTION
[0020] The following embodiments will be combined with the accompanying drawings to describe the utility model in detail. In the drawings or descriptions, similar or identical parts use the same reference numerals, and in actual applications, the shape, thickness or height of each component can be enlarged or reduced. The various embodiments listed in the utility model are only used to illustrate the utility model, and are not used to limit the scope of the utility model. Any obvious modifications or changes made to the utility model do not depart from the spirit and scope of the utility model.
[0021] Example
[0022] See also Figure 1 to Figure 3In the embodiment of the utility model, a rock-embedded pile model test device includes a support structure 1, the support structure 1 includes a bottom plate 11 and a fixed box 12, the fixed box 12 is fixedly installed on the top of the bottom plate 11, a model structure 2 is arranged inside the fixed box 12, the model structure 2 includes a model box 21 and a spring 22, the model box 21 is fixedly installed on the bottom and side wall of the fixed box 12 through the spring 22, a rock is fixedly installed at the bottom of the model box 21, a pile body 24 is arranged on the rock, the interior of the model box 21 and the top of the rock are filled with natural soil 23, a first vibration structure 3 is arranged inside the fixed box 12, and the first vibration structure 3 is arranged inside the fixed box 12. The driving structure 3 includes a first rotating shaft 31 and a first motor 32. The first rotating shaft 31 is rotatably mounted inside the fixed box 12. The first rotating shaft 31 is mounted outside the fixed box 12. The motor shaft of the first motor 32 is fixedly connected to one end of the first rotating shaft 31. A cam 33 is fixedly mounted on the first rotating shaft 31. A transmission structure 4 is arranged on one side of the fixed box 12. The transmission structure 4 includes a support frame 41. The support frame 41 is fixedly mounted on one side of the fixed box 12. A second rotating shaft 42 is rotatably mounted on the support frame 41. A second gear 44 is fixedly mounted on the bottom end of the second rotating shaft 42. The first gear 44 is fixedly mounted on one end of the first rotating shaft 31. 3, the first gear 43 and the second gear 44 are meshed with each other, a second vibration structure 5 is arranged on one side of the model box 21, and the second vibration structure 5 includes a turntable 51, the turntable 51 is fixedly mounted on the top of the second rotating shaft 42, the turntable 51 is eccentrically rotated and connected to a crank 52, the crank 52 is rotatably mounted on one end away from the turntable 51, a connecting rod 53 is rotatably mounted, an articulated seat is fixedly mounted on the side of the model box 21, and the connecting rod 53 is rotatably connected to the articulated seat at one end away from the crank 52, the first motor 32 is started, the first rotating shaft 31 is driven to rotate by the motor shaft of the first motor 32, and the cam 33 is driven to rotate by the first rotating shaft 31, and the cam 33 is driven to rotate by the first rotating shaft 31, and the cam 33 is driven to rotate by the first rotating shaft 31. The model box 21 is vertically vibrated by the cam 33. When the first rotating shaft 31 rotates, the first gear 43 is driven to rotate. Because the first gear 43 is in meshing relationship with the second gear 44, the first gear 43 drives the second gear 44 to rotate. The second rotating shaft 42 drives the turntable 51 to rotate. The turntable 51 drives the crank 52 to rotate. The crank 52 drives the connecting rod 53 to reciprocate. The connecting rod 53 drives the model box 21 to vibrate horizontally. The model box 21 is simulated by the vertical and horizontal vibrations of the pile body 24 subjected to earthquakes.
[0023] See also Figure 1 to Figure 3A lifting structure 6 is provided at the top of the bottom plate 11. The lifting structure 6 includes a rotating base 61. The rotating base 61 is fixedly mounted on the top of the bottom plate 11. A telescopic cylinder 62 is fixedly mounted on the top of the rotating base 61. A fixed plate 63 is fixedly mounted on the top of the telescopic rod of the telescopic cylinder 62. A circular through groove is provided on the fixed plate 63. A side pressure structure 7 is provided on the top of the fixed plate 63. The side pressure structure 7 includes a third gear 71. The third gear 71 is rotatably mounted on the top of the fixed plate 63. A second motor 73 is installed at the bottom of the fixed plate 63. The motor shaft of the second motor 73 is fixedly connected to the third gear 71. A gear ring 72 is rotatably mounted on the top of the fixed plate 63. The gear ring 72 and the third gear 71 are meshed with each other. A hydraulic cylinder 74 is fixedly mounted on the top of the gear ring 72. A pressure plate 75 is fixedly installed on the telescopic rod of the hydraulic cylinder 74. The circular through groove of the fixed plate 63 passes through the pile body 24 by controlling the internal rotation of the rotating base 61 and the lifting and lowering of the telescopic cylinder 62. The hydraulic cylinder 74 is started, and the pressure plate 75 is driven to move through the telescopic rod of the hydraulic cylinder 74. The pile body 24 is squeezed by the pressure plate 75 to simulate the lateral pressure on the pile body 24 in the horizontal direction. The second motor 73 is started, and the third gear 71 is driven to rotate by the motor shaft of the second motor 73. Because the third gear 71 is in meshing relationship with the gear ring 72, the third gear 71 drives the gear ring 72 to rotate, and the gear ring 72 drives the hydraulic cylinder 74 to move around the pile body 24, thereby simulating the lateral pressure on the pile body 24 in different horizontal directions.
[0024] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
[0025] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A rock-embedded pile model test device, comprising a support structure (1), wherein the support structure (1) comprises a base plate (11) and a fixing box (12), wherein the fixing box (12) is fixedly mounted on the top of the base plate (11), and characterized in that: A model structure (2) is arranged inside the fixed box (12), the model structure (2) includes a model box (21), a first vibration structure (3) is arranged inside the fixed box (12), a transmission structure (4) is arranged on one side of the fixed box (12), a second vibration structure (5) is arranged on one side of the model box (21), a lifting structure (6) is arranged at the top end of the bottom plate (11), the lifting structure (6) includes a fixed plate (63), and a side pressure structure (7) is arranged at the top end of the fixed plate (63).
2. A rock-embedded pile model test device according to claim 1, characterized in that: The model structure (2) comprises a model box (21) and a spring (22); the model box (21) is fixedly mounted on the bottom and side wall of a fixed box (12) via the spring (22); a rock is fixedly mounted on the bottom of the model box (21); a pile (24) is arranged on the rock; and the interior of the model box (21) and the top of the rock are filled with natural soil (23).
3. A rock-embedded pile model test device according to claim 1, characterized in that: The first vibration structure (3) comprises a first rotating shaft (31) and a first motor (32); the first rotating shaft (31) is rotatably mounted inside a fixed box (12); the first rotating shaft (31) is mounted outside the fixed box (12); the motor shaft of the first motor (32) is fixedly connected to one end of the first rotating shaft (31); and a cam (33) is fixedly mounted on the first rotating shaft (31).
4. A rock-embedded pile model test device according to claim 3, characterized in that: The transmission structure (4) comprises a support frame (41), wherein the support frame (41) is fixedly mounted on one side of the fixed box (12), a second rotating shaft (42) is rotatably mounted on the support frame (41), a second gear (44) is fixedly mounted on the bottom end of the second rotating shaft (42), a first gear (43) is fixedly mounted on one end of the first rotating shaft (31), and the first gear (43) and the second gear (44) are meshed with each other.
5. The rock-socketed pile model test device according to claim 1, characterized in that: The second vibration structure (5) comprises a turntable (51), the turntable (51) is fixedly mounted on the top of the second rotating shaft (42), the turntable (51) is eccentrically rotatably connected to a crank (52), the crank (52) is rotatably mounted on one end away from the turntable (51) to a connecting rod (53), an articulated seat is fixedly mounted on the side of the model box (21), and the connecting rod (53) is rotatably connected to the articulated seat at one end away from the crank (52).
6. The rock-socketed pile model test device according to claim 1, characterized in that: The lifting structure (6) comprises a rotating base (61), the rotating base (61) is fixedly mounted on the top of the base plate (11), a telescopic cylinder (62) is fixedly mounted on the top of the rotating base (61), a fixed plate (63) is fixedly mounted on the top of the telescopic rod of the telescopic cylinder (62), and a circular through groove is provided on the fixed plate (63).
7. A rock-socketed pile model test device according to claim 6, characterized in that: The side pressure structure (7) comprises a third gear (71), the third gear (71) is rotatably mounted on the top of a fixed plate (63), a second motor (73) is mounted on the bottom of the fixed plate (63), a motor shaft of the second motor (73) is fixedly connected to the third gear (71), a gear ring (72) is rotatably mounted on the top of the fixed plate (63), the gear ring (72) and the third gear (71) are meshed with each other, a hydraulic cylinder (74) is fixedly mounted on the top of the gear ring (72), and a pressure plate (75) is fixedly mounted on the telescopic rod of the hydraulic cylinder (74).