High-pressure multi-layer test box for consolidation test

Abstract

The utility model relates to the field of test boxes, in particular to a multi-layer test box for a high-pressure consolidation test, which comprises a bottom plate, a plurality of groups of box bodies for containing soil samples are vertically arranged above the bottom plate, and a pressure loading plate for uniformly transmitting pressure is arranged above the box bodies. According to the utility model, a plurality of box bodies are selected according to the requirements during the test, are sequentially stacked, are positioned and connected through the second clamping holes and the clamping columns on the box bodies, and can be subjected to a high-pressure consolidation test through the pressing plate on the bottom plate after being assembled and placed, so that the compression characteristics of soil layers with different depths in the same area are obtained; by stacking the plurality of box bodies, a plurality of soil samples can be placed at the same time for testing, the testing efficiency is improved, the plurality of soil samples are tested at the same time in the same environment, the influence of external factors is the same, and the effect on each soil sample is basically consistent, so that the testing data of different soil samples are more comparable, and the testing efficiency is improved. Scientific researchers can more accurately analyze the difference of the compression characteristics of different soil samples.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of test box especially relates to multilayer test box for high pressure consolidation test. BACKGROUND

[0002] High pressure consolidation test is an important content of soil test, is used to study the compression characteristics of soil under high pressure, provides key parameters for engineering design, and the test box is the key appliance of the test, is used to contain soil sample and provides stable environment for the test, guarantees that test data is accurate and reliable, when testing, the prepared soil sample is put into the test box, vertical pressure is applied through the box cover, pore water is discharged through the porous stone under the action of pressure, the soil sample is gradually compressed, the test box provides lateral restraint for the soil sample, simulates the state of soil body under lateral restraint in actual engineering, ensures that the soil sample only deforms in the vertical direction, thereby accurately measuring the compression of the soil sample under different pressures.

[0003] The existing test box mostly adopts single layer structure, can only test one soil sample each time, since the test has to go through complete processes such as installation, pressurization and measurement, a lot of time is consumed, the test progress is seriously affected, the pre-exploration period of the whole project is lengthened, and the test time of different soil samples has a sequence, the test environment is difficult to keep consistent, such as the change of temperature and humidity in the laboratory, the slight performance difference of instrument equipment and the like, these factors can affect the test result, the comparison between different soil sample data is limited, and it is not conducive to accurately analyzing the change rule of the characteristics of site soil.

[0004] Therefore, aiming at the above-mentioned problem that the existing test box mostly adopts single layer structure, can only test one soil sample each time, the test progress is affected, and the test environment of different soil samples is difficult to keep consistent, which can affect the test result, the multilayer test box for high pressure consolidation test can be designed, the multiple soil samples are tested at the same time, so that the compression characteristics of soil layers at different depths in the same area are obtained. UTILITY MODEL CONTENTS

[0005] In order to overcome the problem that the existing test box mostly adopts single layer structure, can only test one soil sample each time, the test progress is affected, and the test environment of different soil samples is difficult to keep consistent, which can affect the test result.

[0006] The utility model discloses a technical scheme for the multilayer test box for high-pressure consolidation test, which comprises a bottom plate, a plurality of box bodies for containing soil samples vertically arranged above the bottom plate, a pressure loading plate for uniformly transmitting pressure arranged above the box bodies, a first clamping hole arranged in the middle of the top of the bottom plate, a second clamping hole arranged at each corner of the top of the box body, a clamping column fixed to each corner of the lower end of the box body, the clamping column being positioned and connected with the box body or the bottom plate through the second clamping hole or the first clamping hole, a lead-out pipe fixed to the two sides of the box body, a connecting pipe arranged at the end of the lead-out pipe away from the box body, a mounting pipe fixed to the end of the connecting pipe close to the lead-out pipe, and a filter plate arranged inside the mounting pipe.

[0007] Further, a horizontal plate is arranged above the bottom plate, a hydraulic cylinder is mounted to the middle of the top of the horizontal plate, a hydraulic column is fixed to the output end of the hydraulic cylinder, a pressure plate is fixed to the lower end of the hydraulic column, and a pressure sensor is arranged at the corner of the pressure plate.

[0008] Further, a rectangular sleeve is fixed to each end of the horizontal plate, a rectangular column is sleeved inside the rectangular sleeve, the rectangular column is fixedly connected with the bottom plate at the lower end, and a positioning pin is symmetrically arranged at both sides of the connection between the rectangular column and the rectangular sleeve.

[0009] Further, a plurality of positioning holes are vertically and symmetrically arranged at both sides of the rectangular column, and the positioning pin is positioned and connected with the rectangular column through the positioning hole and the rectangular sleeve.

[0010] Further, a first threaded groove is arranged in the inner wall of the lead-out pipe, and a second threaded groove is arranged in the outer wall of the mounting pipe.

[0011] Further, the mounting pipe is threadedly connected with the lead-out pipe along the first threaded groove through the second threaded groove.

[0012] Further, a plurality of arc-shaped clamping grooves are arranged around the inner wall of the mounting pipe, a plurality of arc-shaped clamping blocks are fixed to the outside of the filter plate, and the arc-shaped clamping blocks are positioned and clamped with the mounting pipe along the arc-shaped clamping grooves.

[0013] The utility model discloses a beneficial effect: this multilayer test box design allows according to test demand, conveniently select multiple box bodies and place in turn, and with the second clamping hole and the clamping post on the box body fast realization accurate positioning connection, after assembling, can carry out high pressure consolidation test through the pressing plate on the bottom plate simultaneously, this design breaks through the limitation that traditional test can only test single soil sample each time, can place multiple soil samples simultaneously and test, greatly shorten the time required for obtaining the compression characteristic data of the soil layer of the same region at different depths, significantly improve the test efficiency, speed up the progress of the early stage geological survey of the project, reduce the time cost, and multiple soil samples are tested in the same environment in this multilayer test box simultaneously, so that the influence of external factors on each soil sample remains highly consistent, whether it is the subtle change of temperature and humidity, or the possible tiny system error of test equipment, the effect on each soil sample is basically the same, this consistency effectively avoids the test data deviation caused by the difference of external factors, so that the test data of different soil samples has stronger comparability, and scientific researchers can more accurately analyze the difference of the compression characteristics of different soil samples based on these highly comparable data, provide more reliable and accurate data support for subsequent engineering design, and effectively guarantee the safety and stability of the project construction. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the overall structure schematic diagram of the utility model;

[0015] Figure 2 It is the pressing plate structure schematic diagram of the utility model;

[0016] Figure 3 It is the export pipe structure schematic diagram of the utility model;

[0017] Figure 4 It is the connecting pipe structure schematic diagram of the utility model;

[0018] Figure 5 It is the filter plate structure schematic diagram of the utility model.

[0019] The drawing reference explains: 1, bottom plate; 2, box body; 3, pressure loading plate; 101, first clamping hole; 102, horizontal plate; 103, hydraulic column; 104, pressing plate; 105, pressure sensor; 106, hydraulic cylinder; 107, rectangular sleeve; 108, rectangular column; 109, positioning pin; 110, positioning hole; 201, second clamping hole; 202, clamping post; 203, export pipe; 204, first thread groove; 205, connecting pipe; 206, mounting pipe; 207, second thread groove; 208, arc clamping groove; 209, filter plate; 210, arc clamping block. DETAILED DESCRIPTION

[0020] The utility model is further explained in connection with the drawings and embodiments.

[0021] As Figures 1-5 shown, the utility model provides an embodiment: high pressure's consolidated test uses multilayer test box, including bottom plate 1, the vertical multiple groups for containing soil sample box body 2 of bottom plate 1 top, the pressure loading plate 3 for uniform transmission pressure is equipped with on box body 2 top, the first clamping hole 101 is opened in the middle part rectangular array of bottom plate 1 top, each second clamping hole 201 is opened in the corner of box body 2 top, each clamping column 202 is fixedly connected in the corner of box body 2 lower end, clamping column 202 is positioned and connected with box body 2 or bottom plate 1 through second clamping hole 201 or first clamping hole 101, the lead-out pipe 203 that box body 2 both sides horizontal symmetry is fixedly connected has, and the connecting pipe 205 is equipped with in the lead-out pipe 203 end away from box body 2, and the mounting pipe 206 is fixedly connected in the connecting pipe 205 end close to lead-out pipe 203, and the filter plate 209 is equipped with in the mounting pipe 206 inboard, according to the need of test, select multiple box body 2, sequentially stack it, and positioned and connected through second clamping hole 201 and clamping column 202 on box body 2, after assembling and placing, can be through the pressure plate 104 on bottom plate 1 and carry out high pressure consolidation test, to obtain the compression characteristics of the same area different depth soil layer.

[0022] Please refer to Figure 2 , in the embodiment, the horizontal plate 102 is equipped with on bottom plate 1 top, and the hydraulic cylinder 106 is installed in the middle part of horizontal plate 102 upper end, and the output end of hydraulic cylinder 106 is fixedly connected with hydraulic column 103, and the pressure plate 104 is fixedly connected with the lower end of hydraulic column 103, and the pressure sensor 105 is equipped with in the corner of pressure plate 104, and the rectangular sleeve 107 is fixedly connected with the both ends of horizontal plate 102, and the rectangular column 108 is sleeved with inside rectangular sleeve 107, and the rectangular column 108 lower end is fixedly connected with bottom plate 1, and the positioning pin 109 is symmetrically equipped with at the both sides of rectangular column 108 and rectangular sleeve 107 junction, and the multiple positioning holes 110 are vertically and symmetrically opened in the both sides of rectangular column 108, and the positioning pin 109 is positioned and connected with rectangular column 108 through positioning hole 110 and rectangular sleeve 107, according to the height condition of stacked box body 2, through the adjustment of positioning pin 109, rectangular sleeve 107 moves along rectangular column 108 and reaches the appropriate height, then positioning pin 109 is taken and is positioned and connected with rectangular column 108 through positioning hole 110 and rectangular sleeve 107.

[0023] Please refer to Figures 3-5,In the embodiment, the first threaded groove 204 is arranged on the inner wall of the guide pipe 203, the second threaded groove 207 is arranged on the outer wall of the mounting pipe 206, the mounting pipe 206 is screwed with the guide pipe 203 along the first threaded groove 204 through the second threaded groove 207, a plurality of arc clamping grooves 208 are arranged on the inner wall of the mounting pipe 206, a plurality of arc clamping blocks 210 are fixed outside the filter plate 209, and the arc clamping blocks 210 are positioned and clamped with the mounting pipe 206 along the arc clamping grooves 208. After being used for a period of time, the connecting pipe 205 is loosened and removed, and then the filter plate 209 is taken out, and the inside is cleaned to avoid affecting the drainage performance.

[0024] According to the needs of the test, a plurality of box bodies 2 are selected and stacked in sequence, and the clamping columns 202 are positioned and connected with the box bodies 2 or the bottom plate 1 through the second clamping holes 201 or the first clamping holes 101, so that the stacked placement of the plurality of box bodies 2 is completed. Then, according to the height of the stacked box bodies 2, the rectangular sleeve 107 is moved in height along the rectangular column 108 through the adjustment of the positioning pin 109, the positioning pin 109 is taken out and inserted through the positioning hole 110 and the rectangular column 108 after reaching the appropriate height, and then the pressure loading plate 3 is placed in the uppermost box body 2. After the complete assembly, the hydraulic cylinder 106 is driven, the hydraulic column 103 drives the pressure plate 104 to move downward, and the soil sample in the box body 2 is tested. In this process, the pressure sensor 105 monitors the size of the applied pressure in real time and transmits the data to the external measuring equipment. Then, the pressure loading plate 3 uniformly transmits the external pressure to each layer of soil sample, and the pore water of the soil sample needs to be discharged along the connecting pipe 205 through the guide pipe 203 under the action of the pressure, and the filter plate 209 can intercept the soil sample to avoid flowing out with the pore water. After the test is completed, the hydraulic cylinder 106 is unloaded, the pressure loading plate 3 is removed, and then the box bodies 2 are disassembled in sequence. When the filter plate 209 accumulates impurities and affects the drainage efficiency, the connecting pipe 205 is loosened, and then the filter plate 209 is taken out. The inside is cleaned to avoid affecting the drainage performance. After cleaning, the filter plate 209 is taken out, the arc clamping blocks 210 are positioned and clamped with the mounting pipe 206 along the arc clamping grooves 208, then the connecting pipe 205 is taken out, the mounting pipe 206 is screwed with the guide pipe 203 along the first threaded groove 204 through the second threaded groove 207, and the complete installation is reset to ensure the sealing performance and facilitate reuse.

Claims

1. A high-pressure multi-layer test cartridge for use in a consolidation test, comprising a base plate (1); characterized in that: The bottom plate (1) is vertically provided with a plurality of box bodies (2) for containing soil samples above, the box body (2) is provided with a pressure loading plate (3) for uniform pressure transmission above, a first clamping hole (101) is opened in the middle of the bottom plate (1) above, a second clamping hole (201) is opened at each corner of the box body (2) above, a clamping column (202) is fixedly connected at the lower end of each corner of the box body (2), the clamping column (202) is positioned and connected with the box body (2) or the bottom plate (1) through the second clamping hole (201) or the first clamping hole (101), a lead-out pipe (203) is fixedly connected on both sides of the box body (2) symmetrically, a connecting pipe (205) is provided at the end of the lead-out pipe (203) away from the box body (2), a mounting pipe (206) is fixedly connected at the end of the connecting pipe (205) close to the lead-out pipe (203), a filter plate (209) is provided inside the mounting pipe (206).

2. The high-pressure multilayer test cartridge for consolidation testing according to claim 1, characterized in that: A horizontal plate (102) is provided above the bottom plate (1), a hydraulic cylinder (106) is mounted at the middle of the upper end of the horizontal plate (102), a hydraulic column (103) is fixedly connected to the output end of the hydraulic cylinder (106), a pressing plate (104) is fixedly connected to the lower end of the hydraulic column (103), and a pressure sensor (105) is provided at the corner of the pressing plate (104).

3. The high-pressure multilayer test cartridge for consolidation testing according to claim 2, characterized in that: A rectangular sleeve (107) is fixedly connected to each end of the horizontal plate (102), a rectangular column (108) is sleeved inside the rectangular sleeve (107), the lower end of the rectangular column (108) is fixedly connected with the bottom plate (1), and positioning pins (109) are symmetrically provided at both sides of the connection between the rectangular column (108) and the rectangular sleeve (107).

4. The high-pressure multilayer test cartridge for consolidation testing according to claim 3, characterized in that: A plurality of positioning holes (110) are vertically and symmetrically opened at both sides of the rectangular column (108), and the positioning pins (109) are positioned and connected with the rectangular column (108) through the positioning holes (110) passing through the rectangular sleeve (107).

5. The high-pressure multilayer test cartridge for oedometer testing of claim 1, wherein: A first threaded groove (204) is opened in the inner wall of the lead-out pipe (203), and a second threaded groove (207) is opened in the outer wall of the mounting pipe (206).

6. The high-pressure multilayer test cartridge for oedometer testing of claim 5, wherein: The mounting pipe (206) is threadedly connected with the lead-out pipe (203) along the first threaded groove (204) through the second threaded groove (207).

7. The high-pressure multilayer test cartridge for consolidation testing of claim 1, wherein: A plurality of arc-shaped clamping grooves (208) are opened around the inner wall of the mounting pipe (206), a plurality of arc-shaped clamping blocks (210) are fixedly connected around the outer part of the filter plate (209), and the arc-shaped clamping blocks (210) are positioned and clamped with the mounting pipe (206) along the arc-shaped clamping grooves (208).

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