Bearing force pile foundation indoor simulation device

Abstract

The utility model discloses a bearing capacity pile foundation indoor simulation device, relates to pile foundation simulation test technical field, including bottom plate and simulation box, the simulation box is installed above bottom plate, the inside left and right sides of simulation box are respectively provided with dry soil area and wet soil area, the right side of wet soil area is provided with storage box, and the storage box is provided with the bottom plate. A wide-angle nozzle is mounted at the lower end of the left side of the connecting pipe; connecting frames are mounted on the left and right sides of the simulation box, and second limiting bolts are mounted on the front and rear sides of the outer sides of the connecting frames; and a top plate is mounted above the movable plate. The indoor simulation device for the bearing capacity pile foundation is provided with the dry soil area and the wet soil area, so that the bearing capacity of the pile foundation in dry soil and wet soil in two different states can be simulated and tested at the same time, and a test result can better reflect the comprehensive stress condition of the pile foundation in a real complex geological environment; and a reliable basis is provided for accurate evaluation of the bearing capacity of the pile foundation in the building design stage, and the safety of building engineering is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pile foundation simulation test technical field, concretely is a kind of bearing capacity pile foundation indoor simulation device. BACKGROUND

[0002] With the acceleration of urbanization, various large-scale buildings such as high-rise buildings, bridges, port facilities and the like are emerging. These construction projects have high requirements for foundation stability, and the bearing capacity of pile foundation, as a widely used foundation form, is directly related to the safety and stability of the entire building structure. In actual engineering, accurately evaluating the bearing capacity of pile foundation is a key link to ensure the safety and reliability of the building.

[0003] For example, the Chinese utility model patent with application number 201820151316.4 discloses a pile foundation simulation test device. Different pile foundation fixing grooves with different heights are installed in the test simulation box, which facilitates testing the load of the test pile at different piling depths during testing, and is beneficial to providing different reference values for building piling. It is practical and suitable for widespread promotion and use. However, the device still has certain defects.

[0004] When simulating the pile foundation, only single-state soil is tested, and the test cannot be completed simultaneously in dry soil and wet soil. The results obtained cannot reflect the comprehensive stress condition of the pile foundation in the real environment, leading to deviation in the evaluation of the bearing capacity of the pile foundation during the building design stage.

[0005] Therefore, we propose a bearing capacity pile foundation indoor simulation device to solve the problems mentioned above. UTILITY MODEL CONTENTS

[0006] The utility model aims to provide a bearing capacity pile foundation indoor simulation device to solve the problem that, as mentioned in the background art, when simulating the pile foundation in the current market, only single-state soil is tested, and the test cannot be completed simultaneously in dry soil and wet soil. The results obtained cannot reflect the comprehensive stress condition of the pile foundation in the real environment, leading to deviation in the evaluation of the bearing capacity of the pile foundation during the building design stage.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a bearing capacity pile foundation indoor simulation device, comprising a bottom plate and a simulation box, the bottom plate is provided with a simulation box above, the inside of the simulation box is provided with dry soil area and wet soil area respectively on the left and right sides, the right side of the wet soil area is provided with a storage box, and a connecting pipe is penetrated in the storage box, the left side lower end of the connecting pipe is provided with a wide-angle spray head.

[0008] The left and right sides of the simulation box are provided with connecting frames, and the interiors of the connecting frames are provided with movable plates.

[0009] The top of the movable plate is provided with a top plate, the left side of the movable plate is provided with a servo motor, the right side of the servo motor is provided with a threaded rod through an output shaft, the threaded rod is provided with a sliding block, the lower side of the sliding block is provided with a hydraulic cylinder, the lower side of the hydraulic cylinder is provided with a connecting block through a piston rod, and the lower surface of the connecting block is provided with a pressure sensor.

[0010] Preferably, the rear side of the dry soil area and the wet soil area is provided with a drain pipe, and the pile foundation is embedded in the soil in the dry soil area and the wet soil area.

[0011] The above structure design facilitates cleaning of the two areas after the simulation test is completed, making the cleaning work after the test more convenient and efficient, and can timely discharge the excess moisture or other liquids generated during the test process, keep the inside of the device clean, and facilitate the subsequent test.

[0012] Preferably, the right side inner wall of the wet soil area is provided with a fixed shaft, and a protective plate is sleeved on the fixed shaft, the protective plate is rotatably connected with the fixed shaft, the protective plate is provided with a first limiting bolt, and the right side inner wall of the wet soil area is provided with a limiting groove, which is below the storage box.

[0013] The above structure design can store and fix the protection of the wide-angle nozzle when it is not used, effectively protect the wide-angle nozzle, prevent it from accidentally extending, being collided or being blocked by soil, prolong the service life of the nozzle, and ensure the integrity and stability of the test equipment.

[0014] Preferably, the right side of the connecting pipe is provided with a pull plate, the left side of the pull plate is provided with a magnetic suction block, the magnetic suction block is adsorbed with the movable plate, the upper right side of the bottom plate is provided with a water tank, the right side of the water tank is provided with a circulating water pump, the upper and lower sides of the circulating water pump are respectively provided with a water outlet pipe and a water inlet pipe, the water outlet pipe is communicated with the connecting pipe, and the water inlet pipe is communicated with the water tank.

[0015] The above structure design can quickly adjust the humidity of the wet soil area according to the test requirements, which is convenient and fast, improves the flexibility of the test, meets the diversified requirements of different tests on soil humidity, and makes the test conditions more in line with the actual situation.

[0016] Preferably, the right rear side of the connecting pipe is provided with a conveying pipe, and the upper side of the conveying pipe is provided with a water inlet.

[0017] Compared with other water supply modes, the above structure design has lower use cost, increases the selectivity of test operation, and further improves the practicability and economy of the device in humidity adjustment.

[0018] Preferably, the inside of the connecting frame is provided with a guide rod, and the movable plate is slidably connected with the guide rod.

[0019] With the above structure, the position of the movable plate can be adjusted by loosening or tightening the second limiting bolt, and the movable plate and the top plate can be conveniently stored, so that the movable plate and the top plate do not hinder the soil cleaning in the dry soil area and the wet soil area, and the cleaning efficiency is improved.

[0020] Preferably, the upper side of the sliding block is provided with a guide strip, and the upper surface of the top plate is provided with a guide groove, the guide strip penetrates through the guide groove, and the guide strip and the guide groove are slidably connected.

[0021] With the above structure, the pressure sensor can accurately contact the top of the pile foundation and stably apply pressure, ensuring the accuracy and reliability of the pressure monitoring data and providing strong support for accurately simulating the bearing capacity of the pile foundation.

[0022] Preferably, the inside of the connecting frame is provided with an electromagnet, and the movable plate is designed in a metal structure.

[0023] With the above structure, when the position of the movable plate is adjusted, the sliding and fixing of the movable plate are realized by power-off and power-on, which is more convenient and efficient than the traditional limiting method, the movable plate and the top plate can be conveniently stored, the subsequent soil cleaning work is not affected, and the convenience and flexibility of the device are improved.

[0024] Compared with the prior art, the bearing capacity pile foundation indoor simulation device has the advantages that:

[0025] 1. Simulate real environment: The device is provided with a dry soil area and a wet soil area, which can simultaneously simulate the bearing capacity of the pile foundation in dry soil and wet soil in two different states, so that the test results can better reflect the comprehensive stress condition of the pile foundation in a real complex geological environment, provide a reliable basis for accurate evaluation of the bearing capacity of the pile foundation in the design stage of the building, and improve the safety of the building engineering;

[0026] 2. Humidity adjustment is convenient: through the cooperation of the connecting pipe and the wide-angle nozzle, the soil humidity of the wet soil area can be conveniently adjusted to meet the requirements of soil humidity under different test conditions, and the flexibility and diversity of the test are increased;

[0027] 3. Protection and storage function: the protection plate can protect the wide-angle nozzle stored in the storage box from being damaged, the storage design of the wide-angle nozzle can prevent the wide-angle nozzle from being collided or blocked by soil when not in use, prolong the service life of the wide-angle nozzle, and also ensure the cleanliness of the test area. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is the whole main view structure schematic diagram of the utility model;

[0029] Figure 2 It is the whole main view structure schematic diagram of the utility model Figure 1 It is the enlarged structure schematic diagram of A place in the utility model;

[0030] Figure 3 It is the structure schematic diagram when the wide-angle nozzle is stored in the utility model;

[0031] Figure 4 It is the structure schematic diagram of the top plate position when simulating in the utility model;

[0032] Figure 5 It is the structure schematic diagram when the top plate is stored in the utility model;

[0033] Figure 6 It is the structure schematic diagram of the second embodiment of the utility model;

[0034] Figure 7 It is the structure schematic diagram of the conveying pipe and the water inlet position in the second embodiment of the utility model;

[0035] Figure 8 It is the structure schematic diagram of the third embodiment of the utility model.

[0036] In the drawing: 1, bottom plate; 2, simulation box; 3, dry soil area; 4, wet soil area; 5, storage box; 6, fixed shaft; 7, protection plate; 8, first limit bolt; 9, limit groove; 10, connecting pipe; 11, wide-angle nozzle; 12, pull plate; 13, magnetic suction block; 14, water tank; 15, circulating water pump; 16, water outlet pipe; 17, water inlet pipe; 18, conveying pipe; 19, water inlet; 20, connecting frame; 21, guide rod; 22, movable plate; 23, second limit bolt; 24, top plate; 25, servo motor; 26, threaded rod; 27, sliding block; 28, guide strip; 29, guide groove; 30, hydraulic cylinder; 31, connecting block; 32, pressure sensor; 33, electromagnet. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0038] Embodiment one

[0039] Please refer to Figures 1-5The utility model provides a technical scheme: a bearing capacity pile foundation indoor simulation device, including bottom plate 1, simulation box 2, dry soil area 3, wet soil area 4, storage box 5, fixed shaft 6, protection board 7, first limit bolt 8, limit slot 9, connecting pipe 10, wide-angle shower head 11, pull plate 12, magnetic attraction piece 13, water tank 14, circulating water pump 15, water outlet pipe 16, water inlet pipe 17, connecting frame 20, guide rod 21, movable plate 22, second limit bolt 23, top plate 24, servo motor 25, threaded rod 26, sliding block 27, guide strip 28, guide slot 29, hydraulic cylinder 30, connecting block 31 and pressure sensor 32, the top of bottom plate 1 is installed with simulation box 2, and the inside left and right sides of simulation box 2 are provided with dry soil area 3 and wet soil area 4 respectively, and the rear side of dry soil area 3 and wet soil area 4 is provided with a drain pipe, and the pile foundation is buried in the soil in dry soil area 3 and wet soil area 4, after simulation test is completed, it is convenient to clean dry soil area 3 and wet soil area 4, and the water after cleaning can be discharged through the drain pipe, the right side inner wall of wet soil area 4 is installed with fixed shaft 6, and the fixed shaft 6 is sleeved with protection board 7, and the protection board 7 is rotatably connected with the fixed shaft 6, the first limit bolt 8 is installed on the protection board 7, the right side inner wall of wet soil area 4 is provided with the limit slot 9, the limit slot 9 is below the storage box 5, when not using wide-angle shower head 11, pull plate 12 can be pulled, magnetic attraction piece 13 and movable plate 22 are separated from adsorption, connecting pipe 10 and wide-angle shower head 11 are stored in storage box 5, at this moment, protection board 7 can rotate around fixed shaft 6, by adjusting first limit bolt 8 and making it be clamped into limit slot 9, protection board 7 is fixed, to prevent wide-angle shower head 11 from accidentally extending, the right side of wet soil area 4 is installed with storage box 5, and the connecting pipe 10 is penetrated in storage box 5, the left lower end of connecting pipe 10 is installed with wide-angle shower head 11, the right side of connecting pipe 10 is installed with pull plate 12, and the left side of pull plate 12 is installed with magnetic attraction piece 13, magnetic attraction piece 13 and movable plate 22 are adsorbed, the right side above bottom plate 1 is installed with water tank 14, and the right side of water tank 14 is installed with circulating water pump 15, the upper and lower sides of circulating water pump 15 are installed with water outlet pipe 16 and water inlet pipe 17 respectively, water outlet pipe 16 is communicated with connecting pipe 10, water inlet pipe 17 is communicated with water tank 14, according to test demand, if the humidity of wet soil area 4 needs to be adjusted, circulating water pump 15 can be started, circulating water pump 15 draws water from water tank 14 through water inlet pipe 17, then water is delivered to connecting pipe 10 through water outlet pipe 16, and the wide-angle shower head 11 of the left lower end of connecting pipe 10 evenly sprays water in the soil of wet soil area 4, to reach the purpose of adjusting humidity, and it is more convenient and fast.

[0040] The left and right sides of the simulation box 2 are both provided with a connecting frame 20, the inside of the connecting frame 20 is provided with a guide rod 21, the movable plate 22 is slidably connected with the guide rod 21, the right connecting frame 20 is provided with a metal sheet on the side close to the magnetic suction block 13, if it is needed to adjust the position of the movable plate 22, the second limiting bolt 23 is loosened, under the guidance of the guide rod 21, the movable plate 22 can slide in the connecting frame 20, after the movable plate 22 is adjusted to be located on the front side or the rear side of the inside of the connecting frame 20, the second limiting bolt 23 is tightened to be fixed, so that the position of the movable plate 22 is adjusted, the movable plate 22 and the top plate 24 above the movable plate 22 are stored, the soil cleaning in the dry soil area 3 and the wet soil area 4 is not affected, and the inside of the connecting frame 20 is provided with the movable plate 22, and the outside of the connecting frame 20 is provided with the second limiting bolt 23 on the front side and the rear side.

[0041] The top plate 24 is installed above the movable plate 22, the servo motor 25 is installed on the left side of the left movable plate 22, the threaded rod 26 is installed on the right side of the servo motor 25 through an output shaft, the sliding block 27 is installed on the threaded rod 26, the hydraulic cylinder 30 is installed below the sliding block 27, the connecting block 31 is installed below the hydraulic cylinder 30 through a piston rod, the pressure sensor 32 is installed on the lower surface of the connecting block 31, the guide strip 28 is installed above the sliding block 27, the guide groove 29 is formed in the upper surface of the top plate 24, the guide strip 28 penetrates through the guide groove 29, and the guide strip 28 is slidably connected with the guide groove 29, the servo motor 25 is started, the threaded rod 26 is driven to rotate by the servo motor 25, since the sliding block 27 is threadedly connected with the threaded rod 26 and the guide strip 28 above the sliding block 27 is slidably connected with the guide groove 29 on the top plate 24, the sliding block 27 moves leftward and rightward along the threaded rod 26 stably, and the hydraulic cylinder 30 below the sliding block 27 moves along with the sliding block 27, when the hydraulic cylinder 30 is moved to a proper position, the hydraulic cylinder 30 is started, the piston rod of the hydraulic cylinder 30 extends, the connecting block 31 is driven to move downward, the pressure sensor 32 on the lower surface of the connecting block 31 is in contact with the top of the pile foundation, along with the continuous extension of the piston rod, the pressure sensor 32 monitors the pressure applied on the pile foundation in real time and feeds back the pressure data to an operator.

[0042] Embodiment two

[0043] Please refer to Figures 6-7 The utility model provides a technical scheme: a bearing capacity pile foundation indoor simulation device, including conveying pipe 18 and water inlet 19, the difference between this embodiment and embodiment one is:

[0044] The right part rear side of the connecting pipe 10 is provided with a conveying pipe 18, and the upper side of the conveying pipe 18 is provided with a water inlet 19; according to the test requirement, if it is needed to adjust the humidity of the wet soil area 4, water can be added through the water inlet 19 on the upper side of the conveying pipe 18, the water enters the connecting pipe 10 through the conveying pipe 18, and is sprayed into the wet soil area 4 by the wide-angle nozzle 11, so that the humidity adjusting purpose is achieved, and the use cost is lower.

[0045] Embodiment three

[0046] Please refer to Figure 8 The utility model provides a technical scheme: a bearing capacity pile foundation indoor simulation device, including electromagnet 33, this embodiment and embodiment one's difference lies in:

[0047] The inside of the connecting frame 20 is provided with electromagnets 33 on the front side and the rear side, the movable plate 22 is designed in a metal structure, if it is needed to adjust the position of the movable plate 22, the electromagnets 33 are powered off, under the guidance of the guide rod 21, the movable plate 22 can slide in the connecting frame 20, after adjusting the movable plate 22 to be located at the inside front side or the inside rear side of the connecting frame 20, the electromagnets 33 are powered on, and the movable plate 22 is fixed, so that the position of the movable plate 22 can be adjusted, and the movable plate 22 and the top plate 24 above it can be stored, and the subsequent cleaning of the soil in the dry soil area 3 and the wet soil area 4 is not affected.

[0048] Working principle: when the bearing capacity pile foundation indoor simulation device is used, first, the pile foundation used for test is buried in the dry soil area 3 and the wet soil area 4, according to the test requirement, if it is needed to adjust the humidity of the wet soil area 4, the soil humidity of the wet soil area 4 can be adjusted conveniently through the cooperation of the connecting pipe 10 and the wide-angle nozzle 11.

[0049] The servo motor 25 is started, the servo motor 25 drives the threaded rod 26 to rotate, since the sliding block 27 is threadedly connected with the threaded rod 26, and the guide strip 28 on the upper side of the sliding block 27 is slidably connected with the guide groove 29 on the top plate 24, so the sliding block 27 moves left and right along the threaded rod 26 stably, and the hydraulic cylinder 30 under the sliding block 27 moves along with the sliding block 27, when the hydraulic cylinder 30 moves to a suitable position, the hydraulic cylinder 30 is started, the piston rod of the hydraulic cylinder 30 extends, the connecting block 31 moves downward, the pressure sensor 32 on the lower surface of the connecting block 31 contacts the top of the pile foundation, along with the continuous extension of the piston rod, the pressure sensor 32 monitors the pressure applied to the pile foundation in real time, and feeds back the pressure data to the operator.

[0050] When the wide-angle nozzle 11 is not used, the pull plate 12 can be pulled, the magnetic suction block 13 is separated from the suction of the movable plate 22, the connecting pipe 10 and the wide-angle nozzle 11 are stored into the storage box 5, at this time the protection plate 7 can rotate around the fixed shaft 6, the first limiting bolt 8 is adjusted to be clamped into the limiting slot 9, the protection plate 7 is fixed, and the wide-angle nozzle 11 is prevented from being accidentally stretched out.

[0051] If it is necessary to adjust the position of the movable plate 22, the movable plate 22 is limited through the second limiting bolt 23 or the electromagnet 33, so that the position of the movable plate 22 is adjusted, the movable plate 22 and the top plate 24 above the movable plate 22 are stored, the soil in the dry soil area 3 and the wet soil area 4 is not affected during the subsequent cleaning, and a series of work is completed.

[0052] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A bearing capacity pile foundation indoor simulation device, comprising a bottom plate (1) and a simulation box (2), the simulation box (2) is installed above the bottom plate (1), characterized in that: The left and right sides of the simulation box (2) are respectively provided with dry soil area (3) and wet soil area (4), the right side of the wet soil area (4) is provided with a storage box (5), and the storage box (5) is provided with a connecting pipe (10), and the left side of the connecting pipe (10) is provided with a wide-angle nozzle (11). The left and right sides of the simulation box (2) are respectively provided with dry soil area (3) and wet soil area (4), the right side of the wet soil area (4) is provided with a storage box (5), and the storage box (5) is provided with a connecting pipe (10), and the left side of the connecting pipe (10) is provided with a wide-angle nozzle (11). The top of the movable plate (22) is provided with a top plate (24), the left side of the movable plate (22) is provided with a servo motor (25), and the right side of the servo motor (25) is provided with a threaded rod (26) through an output shaft, the threaded rod (26) is provided with a sliding block (27), and the lower side of the sliding block (27) is provided with a hydraulic cylinder (30), the lower side of the hydraulic cylinder (30) is provided with a connecting block (31) through a piston rod, and the lower surface of the connecting block (31) is provided with a pressure sensor (32).

2. The load-carrying pile foundation indoor simulation device according to claim 1, characterized in that: The rear side of the dry soil area (3) and the wet soil area (4) is provided with a drain pipe, and the pile foundation is buried in the soil in the dry soil area (3) and the wet soil area (4).

3. The load bearing pile foundation indoor simulation device according to claim 2, characterized in that: The right side of the wet soil area (4) is provided with a fixed shaft (6), and the fixed shaft (6) is provided with a protective plate (7), and the protective plate (7) is rotatably connected with the fixed shaft (6), and the protective plate (7) is provided with a first limiting bolt (8), and the right side of the wet soil area (4) is provided with a limiting groove (9), and the limiting groove (9) is located below the storage box (5).

4. The indoor modeling device for pile foundation according to claim 1, wherein: The right side of the connecting pipe (10) is provided with a pull plate (12), and the left side of the pull plate (12) is provided with a magnetic block (13), and the magnetic block (13) is adsorbed with the movable plate (22), and the upper right side of the bottom plate (1) is provided with a water tank (14), and the right side of the water tank (14) is provided with a circulating water pump (15), and the upper and lower sides of the circulating water pump (15) are respectively provided with a water outlet pipe (16) and a water inlet pipe (17), and the water outlet pipe (16) is communicated with the connecting pipe (10), and the water inlet pipe (17) is communicated with the water tank (14).

5. The indoor modeling device for pile foundation according to claim 1, wherein: The right rear side of the connecting pipe (10) is provided with a conveying pipe (18), and the upper side of the conveying pipe (18) is provided with a water inlet (19).

6. The indoor modeling device for pile foundation according to claim 1, wherein: The inside of the connecting frame (20) is provided with a guide rod (21), and the movable plate (22) is slidably connected with the guide rod (21), and the right side of the connecting frame (20) is provided with a metal sheet near the magnetic block (13).

7. The load-carrying pile foundation indoor simulation device according to claim 1, characterized in that: The upper side of the sliding block (27) is provided with a guide strip (28), and the upper surface of the top plate (24) is provided with a guide groove (29), and the guide strip (28) penetrates the guide groove (29), and the guide strip (28) is slidably connected with the guide groove (29).

8. The load bearing pile foundation indoor simulation device according to claim 1, wherein: The inside of the connecting frame (20) is provided with an electromagnet (33), and the movable plate (22) is designed as a metal structure.

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