CN112229702A - Test equipment for geosynthetic materials - Google Patents
Test equipment for geosynthetic materials Download PDFInfo
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- CN112229702A CN112229702A CN202011232050.4A CN202011232050A CN112229702A CN 112229702 A CN112229702 A CN 112229702A CN 202011232050 A CN202011232050 A CN 202011232050A CN 112229702 A CN112229702 A CN 112229702A
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- 239000000463 material Substances 0.000 title claims abstract description 59
- 238000012360 testing method Methods 0.000 title claims abstract description 54
- 239000000945 filler Substances 0.000 claims abstract description 24
- 238000006073 displacement reaction Methods 0.000 claims description 35
- 238000006243 chemical reaction Methods 0.000 claims description 20
- 230000007246 mechanism Effects 0.000 claims description 20
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000012780 transparent material Substances 0.000 claims description 3
- 238000004154 testing of material Methods 0.000 claims 1
- 238000009864 tensile test Methods 0.000 abstract description 11
- 238000001514 detection method Methods 0.000 abstract description 4
- 239000002689 soil Substances 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 5
- 238000011160 research Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005476 size effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000004746 geotextile Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000007586 pull-out test Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000012031 short term test Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/02—Measuring coefficient of friction between materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/005—Electromagnetic means
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
Geosynthetic testing apparatus, comprising: the first end part of the geosynthetic material positioned in the model box can extend out of the first gap; the horizontal loading device is used for providing horizontal loading force and comprises a first clamp, and the first clamp can clamp a first end part extending out of the first gap; the second clamp is fixedly arranged and can clamp a second end part of the geosynthetic material, and the second end part is arranged opposite to the first end part; the vertical loading device is used for providing vertical loading force for the filler in the model box; the data module comprises a first force sensor and a second force sensor, wherein the first force sensor is used for detecting horizontal loading force, and the second force sensor is used for detecting vertical loading force. The test equipment can perform a tensile test and a drawing test, has more complete functions, can reduce the types of the test equipment and improve the detection efficiency.
Description
Technical Field
The invention relates to the technical field of test equipment, in particular to test equipment for a geosynthetic material.
Background
The geosynthetic material is a new type of geotechnical engineering material, and is made up by using artificially synthesized plastics, chemical fibre and synthetic rubber as raw material, and making them into various products, and placing them in the interior of soil body, surface of soil body or between the soil bodies of every layer so as to play the role of reinforcing or protecting soil body.
Common geosynthetic material has geogrid, geotextile, geomembrane etc. for correctly selecting and using geosynthetic material, must understand the engineering characteristic of material, need adopt test equipment to detect geosynthetic material's characteristic promptly, in order to obtain corresponding material parameter, however, current test equipment's function is comparatively single, and test equipment does not have unified standard yet, this kind that just leads to test equipment is more, be unfavorable for geosynthetic material's short-term test, also be unfavorable for relevant scientific research personnel to geosynthetic material's deep research.
Therefore, how to provide a solution to overcome the above-mentioned drawbacks remains a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide test equipment for geosynthetics, which can be used for both tensile tests and drawing tests, has more complete functions, is beneficial to reducing the types of the test equipment, can improve the detection efficiency of relevant parameters of the geosynthetics, and can also enable relevant scientific researchers to conveniently and deeply research the characteristics of the geosynthetics.
In order to solve the above technical problems, the present invention provides a test apparatus for geosynthetics, comprising: the first end part of the geosynthetic material positioned in the model box can extend out of the first gap; the horizontal loading device is used for providing horizontal loading force and comprises a first clamp, and the first clamp can clamp the first end part extending out of the first gap; a second clamp fixedly disposed, said second clamp capable of clamping a second end of said geosynthetic material, said second end disposed opposite said first end; the vertical loading device is used for providing vertical loading force for the filler in the mold box; a data module comprising a first force sensor for detecting the horizontal loading force and a second force sensor for detecting the vertical loading force.
In specific practice, a first end and a second end of the geosynthetic material, which are opposite to each other, can be respectively clamped by the first clamp and the second clamp, and at the moment, a horizontal loading force is applied to the first end by the horizontal loading device, so that a tensile test of the geosynthetic material can be performed; or, the second clamp may not clamp the second end, and at this time, the filler may be filled into the mold box to compress the geosynthetic material through the filler, and then, a vertical loading device applies a required vertical loading force to the filler to further compress the geosynthetic material, and the horizontal loading device applies a horizontal loading force to the first end, and a pull-out test of the geosynthetic material may be performed.
Therefore, the test equipment provided by the invention can be used for carrying out tensile test and drawing test on the geosynthetic material, has more complete functions, is beneficial to reducing the types of the test equipment, can further improve the detection efficiency of relevant parameters of the geosynthetic material, and can also enable relevant scientific researchers to conveniently carry out deep research on the characteristics of the geosynthetic material.
Optionally, the horizontal loading device comprises a driving motor and a power conversion mechanism, and the power conversion mechanism comprises a horizontal displacement part which is connected with the first clamp.
Optionally, the horizontal loading device further comprises a control module for controlling the operation of the driving motor; and/or the horizontal displacement component is a screw rod.
Optionally, the horizontal displacement member is connected to the first clamp by a crossover joint.
Optionally, the data module further comprises a displacement sensor for detecting the horizontal displacement amount of the horizontal displacement component.
Optionally, the device further comprises a first rack, wherein the first rack comprises a bearing plate, and at least part of components of the horizontal loading device are mounted on the bearing plate; the mold box is mounted to the carrying floor, or a portion of the floor of the carrying floor forms a bottom wall of the mold box.
Optionally, the perimeter wall of the mould box is further provided with a second aperture from which the second end of the geosynthetic material can protrude, the second clamp being located outside the mould box.
Optionally, the peripheral wall of the mold box includes four wall portions, the first slits and the second slits are correspondingly disposed on two opposite wall portions, and at least a part of at least one of the other two wall portions is made of a transparent material.
Optionally, the packing further comprises a pressure applying cover, the size of the pressure applying cover is matched with that of the opening, and the vertical loading device applies the vertical force to the packing through the pressure applying cover.
Optionally, an inflatable air bag is further arranged below the pressure applying cover.
Optionally, the vertical loading device comprises a second frame and a vertical force applying component, and the vertical force applying component is mounted to the second frame.
Optionally, the mold box has a length of 1.0m to 1.2m, a width of 0.6m to 0.8m, a height of 0.4m to 0.6m, and a wall thickness of 0.18cm to 0.22 cm.
Drawings
Fig. 1 is a schematic structural view of a test apparatus for geosynthetics provided in the present invention, in one direction;
fig. 2 is a schematic structural view of the geosynthetic test device provided in the present invention, in another orientation.
The reference numerals in fig. 1-2 are illustrated as follows:
model 1 box, 11 first gap, 12 second gap, 13 visualization wall;
2, a horizontal loading device, 21 a first clamp, 22 a driving motor, 23 a power conversion mechanism, 231 a gearbox, 232 a horizontal displacement component, 24 a control module and 25 a conversion joint;
3 a second clamp;
4 a first force sensor;
5 a displacement sensor;
6 first frame, 61 bearing plate, 62 anchor rod;
7, a vertical loading device, a 71 pressing cover, 711 lifting rings, a 72 second frame and 73 vertical force applying components;
8 second force sensor.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
The terms "first," "second," and the like, herein are used for convenience in describing two or more structures or components that are the same or similar in structure, and do not denote any particular limitation as to order and/or importance.
Referring to fig. 1 to 2, fig. 1 is a schematic structural view of the testing apparatus for geosynthetics of the present invention in one direction, and fig. 2 is a schematic structural view of the testing apparatus for geosynthetics of the present invention in another direction.
As shown in fig. 1 and 2, the present invention provides a test apparatus for geosynthetic materials, comprising: the model box 1 is used for containing filler, the peripheral wall (the wall part except the top wall and the bottom wall) of the model box 1 is provided with a first gap 11, and a first end part of the geosynthetic material positioned in the model box 1 can extend out of the first gap 11; the horizontal loading device 2 is used for providing horizontal loading force, the horizontal loading device 2 comprises a first clamp 21, and the first clamp 21 can clamp a first end part extending out of the first gap 11; the second clamp 3 is fixedly arranged, the second clamp 3 can clamp a second end part of the geosynthetic material, and the second end part is arranged opposite to the first end part; the vertical loading device 7 is used for providing vertical loading force for the filler in the model box 1, and an opening can be formed in the upper end of the model box 1; and the data module comprises a first force sensor 4 and a second force sensor 8, wherein the first force sensor 4 is used for detecting horizontal loading force, and the second force sensor 8 is used for detecting vertical loading force.
In a specific practice, the opposite first end and second end of the geosynthetic material can be respectively clamped by the first clamp 21 and the second clamp 3, and at this time, a horizontal loading force is applied to the first end by the horizontal loading device 2, so that a tensile test of the geosynthetic material can be performed; or, the second clamp 3 may not clamp the second end, at this time, the filler may be filled into the mold box 1 to compress the geosynthetic material through the filler, and then, the vertical loading device 7 applies a vertical loading force to the filler to indirectly compress the geosynthetic material, so as to better simulate the stress condition of the geosynthetic material in actual use, and the horizontal loading device 2 applies a horizontal loading force to the first end and may perform a drawing test of the geosynthetic material.
Therefore, the test equipment provided by the invention can be used for carrying out tensile test and drawing test on the geosynthetic material, has more complete functions, is beneficial to reducing the types of the test equipment, can further improve the detection efficiency of relevant parameters of the geosynthetic material, and can also enable relevant scientific researchers to conveniently carry out deep research on the characteristics of the geosynthetic material.
The tensile test is divided into two cases: firstly, a tensile test is carried out in the air, and at the moment, the model box 1 can be not filled with filler, so that the measured result is the tensile property of the geosynthetic material; secondly, a tensile test is performed when the filler is filled in the mold box 1, and at this time, the upper and lower sides of the geosynthetic material are filled with the filler, so that the measured result is the tensile characteristic of the geosynthetic material in a specific environment.
In a specific embodiment, the horizontal loading device 2 may include a driving motor 22 and a power conversion mechanism 23, which are capable of being in transmission connection, the power conversion mechanism 23 may include a horizontal displacement member 232, and the horizontal displacement member 232 may be connected to the first clamp 21. The power conversion mechanism 23 can convert the rotational displacement output by the drive motor 22 into the horizontal displacement, and output the horizontal urging force to the first gripper 21 through the horizontal displacement member 232.
The power conversion mechanism 23 may be configured in various forms as long as the above-described technical effects can be achieved. For example, the power conversion mechanism 23 may include a rack and pinion mechanism, and the horizontal displacement member 232 may be a rack; alternatively, the power conversion mechanism 23 may further include a screw mechanism, and the horizontal displacement member 232 may also be a screw.
In addition to the conversion of the form of displacement, the above-described power conversion mechanism 23 may further include a transmission case 231 for adjusting the gear ratio. The transmission 231 may be a transmission mechanism of various forms, such as a parallel shaft type, a planetary gear set, a worm gear set, and the like, and is not limited herein.
Further, the horizontal loading device 2 may further include a control module 24 for controlling the operation of the driving motor 22. In detail, the driving motor 22 may be a servo motor, the control module 24 may be a servo controller, the control mode of the servo controller may be strain control, and the speed range of the displacement may be between 0mm/min and 250 mm/min.
The horizontal displacement member 232 and the first clamp 21 may be connected by a conversion joint 25, and the specific structure of the conversion joint 25 is not limited herein, as long as the reliable connection between the horizontal displacement member 232 and the first clamp 21 can be ensured, and the stable transmission of the horizontal loading force from the horizontal displacement member 232 to the first clamp 21 is not affected.
The data module may further include a displacement sensor 5, which is configured to detect a horizontal displacement amount of the horizontal displacement component 232, so as to obtain a deformation amount of the geosynthetic material during a drawing test or a tensile test.
In the above description, the driving mechanism of the horizontal loading device 2 is the driving motor 22, and the displacement form directly output by the driving motor 22 is different from the displacement form required by the horizontal loading device 2, so that the power conversion mechanism 23 needs to be provided to convert the motion form output by the driving motor 22. In fact, the horizontal loading device 2 may also be a component capable of directly outputting linear displacement, such as an air cylinder, an oil cylinder, and the like, and in this case, a structural component such as the power conversion mechanism 23 may also be omitted, which is beneficial to simplifying the structure of the test equipment.
Further, the testing apparatus provided by the present invention may further include a first frame 6, the first frame 6 may include a bearing plate 61, the bearing plate 61 may be supported on a working surface (generally, a ground surface) by a support member in the form of a ground anchor rod 62, etc., and at least some of the components of the horizontal loading device 2 may be mounted on the bearing plate 61 to support the corresponding components of the horizontal loading device 2. In the embodiment of fig. 1, the driving motor 22, the power conversion mechanism 23, etc. in the horizontal loading device 2 may be mounted on the bearing plate 61, and the displacement sensor 5 and the control module 24 in the horizontal loading device 2 may be mounted on the working surface.
The aforementioned mold box 1 can also be mounted on the carrying plate 61, or a part of the plate portion of the carrying plate 61 can form the bottom wall of the mold box 1, i.e. the carrying plate 61 can also participate in the formation of the mold box 1, so that the structure of the mold box 1 together with the first frame 6 can be simplified, and the weight of the whole testing apparatus can be greatly reduced.
Referring to fig. 2, the surrounding wall of the mold box 1 may be further provided with a second slit 12, a second end of the geosynthetic material may be able to protrude from the second slit 12, and a second clamp 3 may be located outside the mold box 1 to clamp a portion of the second end that protrudes through the second slit 12.
In detail, the peripheral wall of the mold box 1 may include four wall portions, the first slits 11 and the second slits 12 may be disposed in one-to-one correspondence to two opposite wall portions, at least a part of at least one of the other two wall portions may be made of a transparent material to form a visible wall portion 13, the visible wall portion 13 may be used to visually observe a macro state change of the geosynthetic material during a tensile test or a pull test, and if necessary, a camera may be further provided to record the macro state change.
Further, the vertical loading device 7 may further include a pressing cover 71, the size of the pressing cover 71 may be matched with the opening, where the matching means that the shape and size of the pressing cover 71 may be substantially identical to the opening, or slightly smaller than the opening, so that the pressing cover 71 can enter the mold box 1 through the opening to cover the packing in the mold box 1, the vertical loading device 7 may apply a vertical force to the packing through the pressing cover 71, and the size of the pressing cover 71 is much larger than the pressing head of the vertical loading device 7, so that the vertical loading force may be dispersed, so as to ensure uniform application of the vertical load as much as possible, and to facilitate ensuring stability. The pressure applying cover 71 may be provided with a hanging ring 711 to facilitate installation and removal of the pressure applying cover 71.
In addition, an inflatable air bag (not shown) may be provided under the pressing cover 71, which may further improve uniformity and stability of vertical load application.
With reference to fig. 1, the vertical loading device 7 may further include a second frame 72 and a vertical force applying component 73, the vertical force applying component 73 may be mounted on the second frame 72, the structure of the vertical force applying component 73 may refer to the horizontal loading device 2, and it may also adopt a structure of a motor and a power conversion mechanism, or the vertical force applying component 73 may also adopt a component capable of directly outputting linear displacement, such as an air cylinder, an oil cylinder, and the like.
In the conventional test equipment for the geosynthetic material, the size of the model box is small, so that the geosynthetic material needs to be cut into a small sample in each test, however, when the size of the sample is reduced to a certain degree (especially when the width is less than 300 mm), the sample has a serious size effect and boundary effect, so that the property of the geosynthetic material changes suddenly, the difference between the data measured in the test and the actual data is large, and the accuracy of the measurement is influenced; and too small size of the model box can cause that the filler in the model box is difficult to be spread evenly and compacted by vibration, which can cause larger difference between the test working condition and the actual working condition.
For this reason, in the embodiment of the present invention, the size of the mold box 1 may be set to be large, and specifically, the length of the mold box 1 may be set to 1.0m to 1.2m, the width of the mold box 1 may be set to 0.6m to 0.8m, the height of the mold box 1 may be set to 0.4m to 0.6m, and the wall thickness of the mold box 1 may be set to 0.18cm to 0.22 cm. Like this, the geosynthetic material's that can be used to the experiment size can be great, can avoid size effect and boundary effect betterly, and simultaneously, the filler in the model case 1 also more easily paves evenly and the compaction of vibration density, can guarantee the uniformity of experimental operating mode and operating condition as far as possible to guarantee the accuracy of test result.
Taking a drawing test of the geosynthetic material as an example, a specific procedure of the test can be further described in the following embodiments of the present invention.
Step 1, filling fillers into a model box 1 in batches until the lower edge of a first gap 11, leveling vibration density by adopting a vibrator after filling each batch of fillers, wherein the fillers are concrete materials, and the concrete types of the concrete materials are determined according to actual requirements;
step 2, placing a sample of the geosynthetic material on the upper part of the leveled filler, extending the first end part of the geosynthetic material out of the first gap 11, and fixing the first end part of the geosynthetic material through a first clamp 21;
step 4, according to the actual engineering situation, applying a vertical load to the pressure applying cover 71 through a vertical force applying component 73 of the vertical force loading device 7;
step 5, adjusting the drawing speed, wherein the drawing speed is determined according to the property of the filler, and is preferably 0.5mm/min for sandy soil and 0.5-1.0 mm/min for viscous soil;
and 6, starting the driving motor 22 for testing, and after the drawing force has a peak value, continuing to draw until the drawing force is stable, namely stopping the test. The drawing friction coefficient of the rib-soil interface can be calculated according to the following formula.
According to the calculation formula of the interfacial drawing friction strength in the geosynthetic material test specification SL 235-2012, the method comprises the following steps:
in the formula taup-pull-out friction strength, kPa;
f-maximum pullout force, kN;
l, B-length and width of the sample buried inside the soil;
wherein f is the drawing friction coefficient;
τp-a drawing friction strength, kPa, corresponding to P;
p-normal pressure, kPa.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.
Claims (12)
1. A geosynthetic material testing apparatus, comprising:
-a mould box (1) for containing a filling material, the peripheral wall of which is provided with a first slit (11), a first end of the geosynthetic material located inside the mould box (1) being able to protrude from the first slit (11);
a horizontal loading device (2) for providing a horizontal loading force, the horizontal loading device (2) comprising a first clamp (21), the first clamp (21) being capable of clamping the first end portion protruding from the first slit (11);
a second clamp (3) fixedly arranged, the second clamp (3) being capable of clamping a second end portion of the geosynthetic material, the second end portion being arranged opposite the first end portion;
the vertical loading device (7) is provided with an opening at the upper end of the model box (1), and the vertical loading device (7) is used for providing vertical loading force for the filler in the model box (1);
a data module comprising a first force sensor (4) and a second force sensor (8), the first force sensor (4) for detecting the horizontal loading force and the second force sensor (8) for detecting the vertical loading force.
2. The geosynthetic test equipment of claim 1, wherein the horizontal loading device (2) comprises a drive motor (22) and a power conversion mechanism (23), and wherein the power conversion mechanism (23) comprises a horizontal displacement member (232), and wherein the horizontal displacement member (232) is connected to the first clamp (21).
3. The geosynthetic test equipment of claim 2, wherein the horizontal loading device (2) further comprises a control module (24) for controlling operation of the drive motor (22); and/or the presence of a gas in the gas,
the horizontal displacement component (232) is a screw rod.
4. The geosynthetic test equipment of claim 2, wherein the horizontal displacement member (232) is connected to the first clamp (21) by a crossover joint (25).
5. The geosynthetic test equipment of claim 2 wherein the data module further comprises a displacement sensor (5) for detecting an amount of horizontal displacement of the horizontal displacement member (232).
6. The geosynthetic test equipment of claim 1, further comprising a first frame (6), wherein the first frame (6) comprises a carrying floor (61), and wherein at least a portion of the horizontal loading device (2) is mounted to the carrying floor (61);
the mold box (1) is mounted to the carrying plate (61), or a part of the plate portion of the carrying plate (61) forms the bottom wall of the mold box (1).
7. The geosynthetic test equipment of any of claims 1-6, wherein the surrounding wall of the mold box (1) is further provided with a second slit (12), the second end of the geosynthetic material being able to protrude from the second slit (12), the second clamp (3) being located outside the mold box (1).
8. The geosynthetic test equipment of claim 7, wherein the perimeter wall of the mold box (1) comprises four wall portions, the first and second slits (11, 12) are arranged in a one-to-one correspondence with two of the opposing wall portions, and at least a portion of at least one of the other two wall portions is made of a transparent material.
9. The geosynthetic test equipment of any of claims 1-6, further comprising a pressure applying cover (71), wherein the size of the pressure applying cover (71) is matched to the opening, and wherein the vertical loading device (7) applies the vertical force to the fill material through the pressure applying cover (71).
10. The geosynthetic test equipment of claim 9 wherein an inflatable bladder is further disposed below the pressure applying cover (71).
11. The geosynthetic test equipment of claim 9, wherein the vertical loading device (7) comprises a second frame (72) and a vertical force application member (73), the vertical force application member (73) being mounted to the second frame (72).
12. The geosynthetic test equipment of any of claims 1-6, wherein the mold box (1) has a length of from 1.0m to 1.2m, the mold box (1) has a width of from 0.6m to 0.8m, the mold box (1) has a height of from 0.4m to 0.6m, and the mold box (1) has a wall thickness of from 0.18cm to 0.22 cm.
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| CN202011232050.4A CN112229702A (en) | 2020-11-06 | 2020-11-06 | Test equipment for geosynthetic materials |
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| CN202011232050.4A CN112229702A (en) | 2020-11-06 | 2020-11-06 | Test equipment for geosynthetic materials |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113551956A (en) * | 2021-06-10 | 2021-10-26 | 重庆大学溧阳智慧城市研究院 | Full-automatic transparent soil material preparation test device and use method thereof |
| CN114216788A (en) * | 2021-12-21 | 2022-03-22 | 中国科学院力学研究所 | Quasi-static loading device with controllable driving torque for in-soil anchoring structure |
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| CN113551956B (en) * | 2021-06-10 | 2023-06-06 | 重庆大学溧阳智慧城市研究院 | Full-automatic transparent soil material preparation test device and application method thereof |
| CN114216788A (en) * | 2021-12-21 | 2022-03-22 | 中国科学院力学研究所 | Quasi-static loading device with controllable driving torque for in-soil anchoring structure |
| CN114216788B (en) * | 2021-12-21 | 2024-04-12 | 中国科学院力学研究所 | Quasi-static loading device of anchoring structure in soil with controllable driving torque |
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