Testing device for simulating scouring action and bearing deformation of offshore pile foundation

Abstract

The utility model relates to the technical field of offshore engineering test equipment, and discloses a test device for simulating the scouring action and bearing deformation of an offshore pile foundation, which comprises a bottom plate and a pile column, the top of the bottom plate is fixedly connected with a test pool, and the right side of the top of the test pool is fixedly connected with a fixed plate; a plurality of sensors are fixedly connected to the inner sides of the fixing plates, one end of each sensor is fixedly connected with a sensing block, the left side of the testing pool is communicated with a circulating pipe, the other end of the circulating pipe is communicated with a water pump, the other end of the water pump is communicated with a connecting pipe, and the other end of the connecting pipe is communicated with a spray head. According to the utility model, the sensing block and the sensor are tightly attached to the surface of the pile to simulate the complex hydrodynamic condition in the marine environment, and the height of the lifting plate is adjusted by controlling the expansion and contraction of the cylinder II, so that the position of the nozzle is adjusted, the impact of water flow from all directions is simulated, and the comprehensiveness and accuracy of the test are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of offshore engineering test equipment, in particular to a test device for simulating the scouring effect and bearing deformation of offshore pile foundations. Background Technique

[0002] At present, the scouring effect and bearing deformation characteristics of offshore pile foundations are the research focus in the field of ocean engineering. With the continuous increase of offshore engineering, the performance requirements for pile foundations under different environments are also getting higher and higher. Therefore, it is particularly important to develop a device that can simulate actual working conditions and accurately test the performance of pile foundations.

[0003] After retrieval, the Chinese patent publication number is: CN203145066U, which discloses a horizontal bearing capacity loading device for offshore single-pile foundations. The purpose of this utility model is to provide a horizontal bearing capacity loading device for offshore single-pile foundations to make full use of the soil resistance around the pile and the flexural stiffness of the pile body material to provide horizontal resistance and reduce costs. The technical solution of this utility model is: a horizontal bearing capacity loading device for offshore single-pile foundations, characterized in that it includes a number of batter piles evenly distributed on one side of the test pile, a horizontal loading platform simultaneously erected on the tops of the test pile and the batter piles, and a pressure loading mechanism installed on the loading platform; the bottom ends of each batter pile are embedded in the stable seabed soil layer, and the top ends extend above the sea level and incline towards the test pile; one end of the pressure loading mechanism is rigidly connected to the test pile, and the other end is simultaneously rigidly connected to each batter pile. This utility model is applicable to fields such as civil engineering, port navigation engineering, marine geotechnical engineering, and marine pile foundation engineering. However, the existing test devices are difficult to truly simulate the actual working environment faced by offshore pile foundations, reducing the adaptability and simulation accuracy of the test devices to different geological conditions and dynamic environmental factors. Therefore, a test device for simulating the scouring effect and bearing deformation of offshore pile foundations is proposed to solve the above problems. Content of the Utility Model

[0004] In order to make up for the above deficiencies, the utility model provides a test device for simulating the scouring effect and bearing deformation of offshore pile foundations, aiming to improve the problem that it is difficult to truly simulate the actual working environment faced by offshore pile foundations in the existing technology, reducing the adaptability and simulation accuracy of the test device to different geological conditions and dynamic environmental factors.

[0005] To achieve the above object, the utility model adopts the following technical solutions: A test device for simulating the scour effect and bearing deformation of offshore pile foundations, including a bottom plate and a pile column. A test pool is fixedly connected to the top of the bottom plate. A fixed plate is fixedly connected to the upper right side of the test pool. A plurality of sensors are fixedly connected to the inner sides of the fixed plate. One ends of the plurality of sensors are fixedly connected with induction blocks. A circulation pipe is communicated with the left side of the test pool. The other end of the circulation pipe is communicated with a water pump. The other end of the water pump is communicated with a connecting pipe. The other end of the connecting pipe is communicated with a spray head. A support plate is fixedly connected to the left side of the test pool. A second cylinder is fixedly connected to the upper left side of the support plate. One end of the second cylinder is fixedly connected with a lifting plate. A rotating member is slidably connected to the right side of the lifting plate. A rotating frame is fixedly connected to the upper right side of the support plate. The front and rear sides of the rotating member are rotatably connected to the top of the rotating frame. The left side of the spray head is fixedly connected to the right side of the rotating member. A replacement mechanism is arranged on the top of the bottom plate.

[0006] Through the above technical solution: Place the pile column in the test pool, and press the induction block and the sensor tightly against the surface of the pile column. At this time, start the water pump to output water into the spray head, and use the spray head to wash the surface of the pile column. The generated impact force is transmitted to the sensor through the induction block for data statistics.

[0007] As a further description of the above technical solution:

[0008] The replacement mechanism includes two sliding channels. The adjacent sides of the two sliding channels are fixedly connected to the front and rear sides of the test pool. A plurality of first cylinders are fixedly connected to the left and right sides of the two sliding channels. One ends of the plurality of first cylinders penetrate through the left and right sides of the sliding channels and are fixedly connected with a first connecting member. The tops of the two first connecting members are rotatably connected with a rotating plate. The middles of the two rotating plates are rotatably connected through a rotating shaft. The tops of the two rotating plates are rotatably connected with a second connecting member. The tops of the two second connecting members are slidably connected with a mounting plate. A soil container is slidably connected to the inside of the test pool. Mounting grooves are formed in the front and rear sides of the top of the soil container.

[0009] Through the above technical solution: Different types and properties of soil samples can be filled in the soil container according to needs. By adjusting the soil type and compactness in the soil sample container, the scour situation of the pile foundation under different geological conditions can be simulated, so as to more accurately evaluate the performance of the pile foundation in actual use. At the same time, start the first cylinder to push the rotating plate to drive the mounting plate to lift upward, which is convenient for replacing the soil sample later.

[0010] As a further description of the above technical solution:

[0011] A limiting ring is slidably connected to the outer wall of the connecting pipe. The bottom of the outer wall of the limiting ring is fixedly connected to the top of the rotating member.

[0012] Through the above technical solution: The connecting pipe is limited by the limiting ring to prevent the connecting pipe from falling off or loosening during use.

[0013] As a further description of the above technical solution:

[0014] A data acquisition box is fixedly connected to the right side of the top of the bottom plate, and a collection box is slidably connected to the right side of the data acquisition box.

[0015] Through the above technical solution: The data collected by the sensor is recorded in the data acquisition box and statistically calculated.

[0016] As a further description of the above technical solution:

[0017] A handle is fixedly connected to the right side of the collection box, and an anti-slip sleeve is fixedly connected to the outer wall of the handle.

[0018] Through the above technical solution: Multiple tools can be placed in the collection box to expand the storage space.

[0019] As a further description of the above technical solution:

[0020] A controller is fixedly connected to the top of the data acquisition box, and the controller is electrically connected to the first cylinder, the second cylinder and the sensor respectively.

[0021] Through the above technical solution: The controller can conveniently perform simple operation control on the operating equipment on the entire device.

[0022] As a further description of the above technical solution:

[0023] Reinforcing rods are fixedly connected to the right sides of the front and back of the bottom plate, and the tops of the two reinforcing rods are fixedly connected to the right side of the test pool.

[0024] Through the above technical solution: The reinforcing rods reinforce the bottom plate and the test pool to improve the firmness of the entire device.

[0025] As a further description of the above technical solution:

[0026] A plurality of reinforcing plates are fixedly connected to the front and back sides of the bottom plate, a plurality of support columns are fixedly connected to the bottoms of the plurality of reinforcing plates, and rubber pads are fixedly connected to the bottoms of the plurality of support columns.

[0027] Through the above technical solution: The reinforcing plates connect and fix the support columns, and the support columns are distributed around the bottom plate to improve the overall stability of the device.

[0028] The utility model has the following beneficial effects:

[0029] 1. In the present utility model, the induction block and the sensor are closely attached to the surface of the pile column to simulate the complex hydrodynamic conditions in the marine environment. The sensor and the induction block can directly and sensitively capture the minute changes on the surface of the pile foundation. By controlling the telescopic movement of the second cylinder, the height of the lifting plate is adjusted, thereby adjusting the position of the nozzle to simulate the water flow impact from various directions, improving the comprehensiveness and accuracy of the test.

[0030] 2. In the present utility model, different types and properties of soil samples are filled in the soil container as needed. By adjusting the soil type and compactness in the soil sample container, the scour situation of the pile foundation under different geological conditions can be simulated. When the first cylinder is started, the first connecting piece and the second connecting piece move inward simultaneously, and the rotating plate is rotated to drive the mounting plate to lift the soil container upward, so that the staff can quickly and safely replace the soil sample. Description of the Drawings

[0031] Figure 1 is a three-dimensional view of a test device for simulating the scour effect and bearing deformation of an offshore pile foundation proposed by the present utility model;

[0032] Figure 2 is a front view of a test device for simulating the scour effect and bearing deformation of an offshore pile foundation proposed by the present utility model;

[0033] Figure 3 is a partial structural schematic diagram of a test device for simulating the scour effect and bearing deformation of an offshore pile foundation proposed by the present utility model;

[0034] Figure 4 is a schematic diagram of the nozzle structure of a test device for simulating the scour effect and bearing deformation of an offshore pile foundation proposed by the present utility model;

[0035] Figure 5 is a partial structural split diagram of a test device for simulating the scour effect and bearing deformation of an offshore pile foundation proposed by the present utility model.

[0036] Legend Explanation:

[0037] 1. Bottom plate; 2. Replacement mechanism; 201. Slideway; 202. First cylinder; 203. First connecting piece; 204. Rotating plate; 205. Rotating shaft; 206. Second connecting piece; 207. Mounting plate; 208. Soil container; 209. Mounting groove; 3. Test pool; 4. Pile column; 5. Fixed plate; 6. Sensor; 7. Induction block; 8. Water pump; 9. Connecting pipe; 10. Sprinkler head; 11. Support plate; 12. Second cylinder; 13. Lifting plate; 14. Rotating frame; 15. Rotating piece; 16. Circulation pipe; 17. Limit ring; 18. Data acquisition box; 19. Collection box; 20. Handle; 21. Anti-slip sleeve; 22. Controller; 23. Reinforcing rod; 24. Support column; 25. Rubber pad; 26. Reinforcing plate. Detailed implementation manner

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0039] Referring to Figure 1 , Figure 3 and Figure 4 , an embodiment provided by the present invention: A test device for simulating the scouring effect and bearing deformation of offshore pile foundations includes a bottom plate 1 and a pile column 4. A test pool 3 is fixedly connected to the top of the bottom plate 1. A fixed plate 5 is fixedly connected to the right side of the top of the test pool 3. A plurality of sensors 6 are fixedly connected to the inner side of the fixed plate 5. One end of each of the plurality of sensors 6 is fixedly connected to an induction block 7. The left side of the test pool 3 is communicated with a circulation pipe 16. The other end of the circulation pipe 16 is communicated with a water pump 8. The other end of the water pump 8 is communicated with a connecting pipe 9. The other end of the connecting pipe 9 is communicated with a sprinkler head 10. A support plate 11 is fixedly connected to the left side of the test pool 3. A second cylinder 12 is fixedly connected to the top left side of the support plate 11. One end of the second cylinder 12 is fixedly connected to a lifting plate 13. The right side of the lifting plate 13 is slidably connected to a rotating piece 15. A rotating frame 14 is fixedly connected to the top right side of the support plate 11. The front and rear sides of the rotating piece 15 are rotatably connected to the top of the rotating frame 14. The left side of the sprinkler head 10 is fixedly connected to the right side of the rotating piece 15. A replacement mechanism 2 is arranged on the top of the bottom plate 1. A limit ring 17 is slidably connected to the outer wall of the connecting pipe 9. The bottom of the outer wall of the limit ring 17 is fixedly connected to the top of the rotating piece 15. A data acquisition box 18 is fixedly connected to the top right side of the bottom plate 1. A collection box 19 is slidably connected to the right side of the data acquisition box 18;

[0040] Specifically, a test pool 3 is fixedly installed on the top of the bottom plate 1 to simulate the complex hydrodynamic conditions in the marine environment. A fixed plate 5 is fixedly installed on the upper right side of the test pool 3, and a plurality of sensors 6 are evenly distributed on the inner side thereof. The sensors 6 are used to monitor various parameter changes of the pile foundation during the scouring process in real time, such as pressure and displacement, to ensure the accuracy of the test data. To further enhance the test accuracy, one end of each of the plurality of sensors 6 is connected with an induction block 7, and the induction block 7 can capture the minute changes on the surface of the pile foundation more directly and sensitively. The left side of the test pool 3 is connected to a water pump 8 through a circulation pipe 16 to form a closed water flow circulation system, which can simulate the impact and scouring of the water flow in the ocean. The other end of the water pump 8 is connected to a spray head 10 through a connecting pipe 9, and the spray head 10 can precisely control the flow rate and direction of the water flow to simulate different intensities of the marine environment. A second cylinder 12 is installed on the upper left side of the support plate 11, and the model of the second cylinder 12 is SMC CJ2. By controlling the expansion and contraction of the second cylinder 12, the height of the lifting plate 13 can be adjusted, thereby adjusting the position of the spray head 10 to adapt to the pile foundation test at different depths. The cooperation between the rotating member 15 and the rotating frame 14 enables the spray head 10 to rotate at a certain angle to simulate the water flow impact from various directions. In addition, a limiting ring 17 is slidably connected to the outer wall of the connecting pipe 9, and the setting of the limiting ring 17 can prevent the connecting pipe 9 from shifting during rotation and ensure the stability of the water flow. The data acquisition box 18 is used to collect and process the data transmitted by the sensors 6.

[0041] Referring to Figure 1 , Figure 2 and Figure 5 , the replacement mechanism 2 includes two slideways 201. The adjacent sides of the two slideways 201 are fixedly connected to the front and rear sides of the test pool 3 respectively. A plurality of first cylinders 202 are fixedly connected to the left and right sides of the two slideways 201. One end of each of the plurality of first cylinders 202 penetrates through the left and right sides of the slideway 201 and is fixedly connected to a first connecting member 203. The tops of the two first connecting members 203 are rotatably connected to a rotating plate 204 respectively. The middles of the two rotating plates 204 are rotatably connected through a rotating shaft 205. The tops of the two rotating plates 204 are rotatably connected to a second connecting member 206 respectively. The tops of the two second connecting members 206 are slidably connected to a mounting plate 207 respectively. A soil container 208 is slidably connected inside the test pool 3, and mounting grooves 209 are formed on the front and rear sides of the top of the soil container 208.

[0042] Specifically, in order to improve the accuracy and efficiency of soil testing, the slideway 201 is firmly fixed on the front and back sides of the test pool 3 to ensure the stability of the device; the left and right sides of the slideway 201 are connected to a plurality of first cylinders 202. The model of the first cylinder 202 is SMC CJ2. One end of the first cylinder 202 is fixed to the side wall of the slideway 201 through a sliding connection, and the other end is connected to the first connecting member 203, enabling the slideway 201 to adjust its position through the telescopic movement of the first cylinder 202, thereby achieving precise control of the soil container 208; a rotating plate 204 is provided at the top of the first connecting member 203. The middle parts of the rotating plates 204 are connected to each other through a rotating shaft 205. The top of the rotating plate 204 is rotatably connected to the second connecting member 206, and the top of the second connecting member 206 is slidably connected to a mounting plate 207; when the first cylinder 202 is started, the first connecting member 203 and the second connecting member 206 move inward simultaneously. Through the intersection of the rotating plates 204, the mounting plate 207 drives the soil container 208 to be lifted upward, enabling the staff to quickly and safely replace the soil samples.

[0043] Refer to Figure 1 、 Figure 2 and Figure 3 As shown in

[0044] Specifically, the collection box is convenient for the operator to move through the handle 20. At the same time, the anti-slip sleeve 21 effectively prevents accidental damage caused by hand slipping; the controller 22 is fixed on the data acquisition box 18. The controller 22 can achieve precise control of the first cylinder 202, the second cylinder 12, and the sensor 6, ensuring real-time transmission and processing of data, thereby ensuring the accuracy and efficiency of the test; reinforcing rods 23 are provided on the top right side of the bottom plate 1. The tops of the two reinforcing rods 23 are connected to the right side of the test pool 3, forming a stable triangular structure, effectively enhancing the lateral support ability of the device and preventing possible tilting during use. A plurality of reinforcing plates 26 are also fixed on the front and back sides of the bottom plate 1. The bottoms of these reinforcing plates 26 are connected to the rubber pads 25 through the support columns 24. The plurality of support columns 24 are evenly distributed, increasing the bottom support area of the device. The rubber pads 25 can buffer the unevenness of the ground, prevent wear caused by the device directly contacting the ground, and at the same time absorb the vibration generated during operation, maintaining the stable operation of the device.

[0045] Working principle: First, place the pile column 4 in the test pool 3, and press the induction block 7 and the sensor 6 tightly against the surface of the pile column 4 to simulate the complex hydrodynamic conditions in the marine environment. The sensor 6 is used to monitor the pressure and displacement of the pile foundation in real time during scouring and the accuracy of the test data. The induction block 7 can capture the tiny changes on the surface of the pile foundation more directly and sensitively. By controlling the telescopic movement of the second cylinder 12, adjust the height of the lifting plate 13, thereby adjusting the position of the nozzle 10 to adapt to pile foundation tests at different depths. The cooperation between the rotating member 15 and the rotating frame 14 enables the nozzle 10 to rotate at a certain angle to simulate the water flow impact from various directions, improving the comprehensiveness and accuracy of the test. And fill different types and properties of soil samples in the soil container 208 as needed. By adjusting the soil type and compactness in the soil sample container, the scouring situation of the pile foundation under different geological conditions can be simulated, so as to more accurately evaluate the performance of the pile foundation in actual use. When the first cylinder 202 is started, the first connecting member 203 and the second connecting member 206 move inward simultaneously. Through the cross of the rotating plate 204, the mounting plate 207 drives the soil container 208 to lift upward, so that the staff can quickly and safely replace the soil sample.

[0046] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A test device for simulating the scouring effect and bearing deformation of offshore pile foundations, comprising a bottom plate (1) and a pile column (4), characterized in that: The top of the bottom plate (1) is fixedly connected with a test pool (3). The right side of the top of the test pool (3) is fixedly connected with a fixing plate (5). A plurality of sensors (6) are fixedly connected to the inner sides of the fixing plate (5). One end of each of the plurality of sensors (6) is fixedly connected with an induction block (7). The left side of the test pool (3) is communicated with a circulation pipe (16). The other end of the circulation pipe (16) is communicated with a water pump (8). The other end of the water pump (8) is communicated with a connecting pipe (9). The other end of the connecting pipe (9) is communicated with a spray head (10). The left side of the test pool (3) is fixedly connected with a support plate (11). The left side of the top of the support plate (11) is fixedly connected with a second cylinder (12). One end of the second cylinder (12) is fixedly connected with a lifting plate (13). A rotating member (15) is slidably connected to the right side of the lifting plate (13). The right side of the top of the support plate (11) is fixedly connected with a rotating frame (14). The front and rear sides of the rotating member (15) are rotatably connected to the top of the rotating frame (14). The left side of the spray head (10) is fixedly connected to the right side of the rotating member (15). A replacement mechanism (2) is arranged on the top of the bottom plate (1).

2. The simulated offshore pile foundation scouring effect and bearing deformation test device according to claim 1, characterized in that: The replacement mechanism (2) includes two sliding channels (201). The adjacent sides of the two sliding channels (201) are fixedly connected to the front and rear sides of the test pool (3). A plurality of first cylinders (202) are fixedly connected to the left and right sides of the two sliding channels (201). One end of each of the plurality of first cylinders (202) penetrates through the left and right sides of the sliding channel (201) and is fixedly connected with a first connecting member (203). The tops of the two first connecting members (203) are rotatably connected with rotating plates (204). The middle parts of the two rotating plates (204) are rotatably connected through a rotating shaft (205). The tops of the two rotating plates (204) are rotatably connected with second connecting members (206). The tops of the two second connecting members (206) are slidably connected with mounting plates (207). A soil container (208) is slidably connected to the inside of the test pool (3). Mounting grooves (209) are formed in the front and rear sides of the top of the soil container (208).

3. The testing device for simulating the scour effect and bearing deformation of offshore pile foundations according to claim 1, wherein: A limiting ring (17) is slidably connected to the outer wall of the connecting pipe (9). The bottom of the outer wall of the limiting ring (17) is fixedly connected to the top of the rotating member (15).

4. The simulation of offshore pile foundation scouring effect and bearing deformation test device according to claim 1, characterized in that: A data acquisition box (18) is fixedly connected to the right side of the top of the bottom plate (1). A collection box (19) is slidably connected to the right side of the data acquisition box (18).

5. The simulated offshore pile foundation scouring effect and bearing deformation test device according to claim 4, characterized in that: A handle (20) is fixedly connected to the right side of the collection box (19). An anti-slip sleeve (21) is fixedly connected to the outer wall of the handle (20).

6. The simulated offshore pile foundation scouring effect and bearing deformation test device according to claim 4, characterized in that: A controller (22) is fixedly connected to the top of the data acquisition box (18). The controller (22) is electrically connected to the first cylinder (202), the second cylinder (12), and the sensor (6) respectively.

7. A test device for simulating the scouring effect and bearing deformation of offshore pile foundations according to claim 1, characterized in that: Reinforcing rods (23) are fixedly connected to the right side of the top of the bottom plate (1). The tops of the two reinforcing rods (23) are fixedly connected to the right side of the test pool (3).

8. The testing device for simulating the scouring effect and bearing deformation of an offshore pile foundation according to claim 1, wherein: A plurality of reinforcing plates (26) are fixedly connected to both the front and rear sides of the bottom plate (1), the bottoms of the plurality of reinforcing plates (26) are fixedly connected with support columns (24), and the bottoms of the plurality of support columns (24) are fixedly connected with rubber pads (25).

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