CN210665254U - Geosynthetic material creep property tester - Google Patents
Geosynthetic material creep property tester Download PDFInfo
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- CN210665254U CN210665254U CN201921244383.1U CN201921244383U CN210665254U CN 210665254 U CN210665254 U CN 210665254U CN 201921244383 U CN201921244383 U CN 201921244383U CN 210665254 U CN210665254 U CN 210665254U
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- levers
- clamp body
- creep
- lever
- geosynthetic
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- 239000000463 material Substances 0.000 title claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 230000003287 optical effect Effects 0.000 claims description 13
- 230000004308 accommodation Effects 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 23
- 238000000034 method Methods 0.000 description 4
- 230000007774 longterm Effects 0.000 description 3
- 210000002421 cell wall Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000004746 geotextile Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000012422 test repetition Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a geosynthetic material creep property tester, include: the supporting frame is arranged at the top end of the workbench and provided with a cross rod; the device comprises a plurality of levers, a plurality of lifting mechanisms and a lifting mechanism, wherein the levers are arranged on a cross rod side by side at intervals, the positions of the levers close to the front ends are rotatably connected with the cross rod, and weight plates are arranged on the levers; the sample clamping mechanisms are arranged at the front ends of the levers in a one-to-one correspondence manner; and the creep detection system is arranged on the workbench. Through setting up a plurality of levers and a plurality of sample fixture, can carry out the multiunit simultaneously and test, improve test efficiency.
Description
Technical Field
The utility model relates to a geosynthetic material test technical field, more specifically the utility model relates to a geosynthetic material creep property tester that says so.
Background
The geosynthetic material has the characteristics of soil stabilization, water diversion and base layer reinforcement, and is widely applied to projects such as highways, railways, tunnels, bridges and the like. Because the geosynthetic material is in a load state for a long time, is positioned on a roadbed bottom layer and cannot be replaced, people begin to care whether the long-term stability of the engineering is influenced by the change of the long-term mechanical property of the geosynthetic material. Geosynthetics deform over time under constant load and exhibit creep. Therefore, the geosynthetic material should have good creep resistance, otherwise under long-term loading, the material will lose stability of the structure if it is deformed greatly, which will affect the reinforcement of the structure and may even cause the collapse of the engineering structure.
For testing the creep property of the geosynthetics, the test is currently carried out in engineering projects with reference to GB/T17631-1998 determination of the tensile creep and tensile creep rupture properties of geotextiles and related products. The standard states that the tensile creep property test requires 1000h of tensile and then average characterization of four samples, and creep rupture requires longer time and more sample number. At present, most of test devices can only perform a sample test at the same time, so that the test period is as high as more than 4000 hours, and the efficiency is low; in addition, in other patents, the design that the upper clamp and the lower clamp are used for clamping the geosynthetic material is omitted, and the test accuracy is influenced by the load possibly generated by the self weight of the clamps besides the tensile load of the geosynthetic material sample during the test; in some testing devices, the measurement of tensile deformation is not sensitive and accurate enough, and the measured tensile creep value is not accurate; the determination of creep rupture by some devices is based on real-time observation by the experimenter, which increases the workload of the personnel, or the inflection point of the tensile curve, which generally results in a time lag of creep rupture.
Therefore, how to provide a geosynthetic material creep performance tester capable of simultaneously performing multiple tests, with high efficiency and accurate test is a problem that needs to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a can carry out multiunit simultaneously experimental, high efficiency, and test accurate geosynthetic material creep performance tester.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a geosynthetic creep performance tester, comprising:
a working table is arranged on the upper portion of the machine body,
the support frame is arranged at the top end of the workbench, and a cross rod is arranged on the support frame;
the device comprises a plurality of levers, a plurality of lifting mechanisms and a lifting mechanism, wherein the levers are arranged on the cross rod side by side at intervals, the positions of the levers close to the front ends are in rotary connection with the cross rod, and weight plates are arranged on the levers;
the sample clamping mechanisms are arranged at the front ends of the levers in a one-to-one correspondence manner; and
a creep detection system disposed on the table.
Can know via foretell technical scheme, compare with prior art, the utility model discloses a geosynthetic material creep property tester is provided, through setting up a plurality of levers and a plurality of sample fixture, can carry out the multiunit simultaneously experimental, improves test efficiency.
Furthermore, rotatable mounting plates are arranged on the cross rod at intervals, and the lever is arranged on the mounting plates close to the front end of the lever.
Furthermore, the two side ends of the mounting plate are rotatably connected with the cross rod.
Furthermore, the both sides end of mounting panel all is connected with the pivot, the pivot with the horizontal pole is pegged graft and is rotated and be connected.
Furthermore, a placing groove is formed in the mounting plate, and the lever is clamped in the placing groove.
Further, the method also comprises the following steps: the upper cover plate, the inner groovy has been seted up to the upper cover plate bottom, the standing groove with form between the inner groovy and be used for placing the accommodation space of lever, just the upper cover plate with the mounting panel lid closes and is connected. The upper cover plate and the mounting plate can limit and fix the lever, so that the lever is prevented from moving up and down, and the normal operation of the test is ensured.
Furthermore, the lever is close to front end position both sides an organic whole and is connected with the limiting plate, be located on the mounting panel spacing hole has all been seted up to standing groove both sides cell wall, the limiting plate grafting is fixed spacing downthehole. The limiting plate is inserted and fixed in the limiting hole, so that the lever can be prevented from moving in the front-back direction, and the lever is prevented from slipping in the using process.
Further, the sample holding mechanism includes:
the upper clamp body is fixedly connected with the front end of the lever;
the lower clamp body is arranged on the workbench, and the position of the lower clamp body corresponds to that of the upper clamp body.
Further, be provided with the arch on the lower anchor clamps body, creep detection system includes:
the pressure-sensitive switch is hinged on the workbench through a bracket and is abutted against the bulge;
the timer is arranged on the workbench and is electrically connected with the pressure-sensitive switch;
the optical distance measuring instrument is arranged on the upper clamp body and is electrically connected with an external computer;
and the power switch is arranged on the workbench and is electrically connected with the pressure-sensitive switch, the timer and the optical range finder.
When the test is started, the power switch is turned on, the bulge on the lower clamp touches the pressure-sensitive switch, and the timer starts timing, when the sample is broken, the force borne by the clamp disappears, the bulge on the lower clamp is disconnected from the pressure-sensitive switch, and the timer stops timing.
Further, the total weight of the upper clamp body, the optical distance meter and the lower clamp body is 4 times of the weight of the lever. When can guarantee to test, neglect the load of anchor clamps to the sample about, the accessible weight is accurate to be loaded the sample, avoids the sample because of receiving the load that anchor clamps dead weight produced, influences the test precision.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a creep property tester for geosynthetics according to the present invention.
Figure 2 is a side view of the figure of figure 1.
Fig. 3-4 are schematic structural diagrams of the mounting plate and the upper cover plate.
1-workbench, 2-support frame, 3-crossbar, 31-mounting plate, 311-placement groove, 312-limiting hole, 32-rotating shaft, 4-lever, 41-limiting plate, 5-weight plate, 6-sample clamping mechanism, 61-upper clamp body, 62-lower clamp body, 621-bulge, 7-creep detection system, 71-pressure sensitive switch, 72-timer, 73-optical distance meter, 74-power switch, 8-upper cover plate, 81-inner groove, 9-accommodating space and 10-support.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The embodiment of the utility model discloses geosynthetic material creep property tester, include:
the working table (1) is provided with a working table,
the support frame 2 is arranged at the top end of the workbench 1, and a cross rod 3 is arranged on the support frame 2;
the device comprises a plurality of levers 4, wherein the levers 4 are arranged on a cross rod 3 side by side at intervals, and the positions, close to the front ends, of the levers 4 are rotatably connected with the cross rod 3;
the sample clamping mechanisms 6 are multiple, and the multiple sample clamping mechanisms 6 are respectively in one-to-one correspondence with the multiple levers 4 and are arranged at the front ends of the levers 4; and
The cross bar 3 is provided with rotatable mounting plates 31 at intervals, and the lever 4 is arranged on the mounting plates 31 near the front end thereof.
The two side ends of the mounting plate 31 are rotatably connected with the cross rod 3.
The mounting plate 31 is connected with a rotating shaft 32 at both ends, and the rotating shaft 32 is inserted into the cross bar 3 and is connected with the cross bar in a rotating manner.
The mounting plate 31 is provided with a placing groove 311, and the lever 4 is clamped in the placing groove 311.
The tester also includes: upper cover plate 8, inner groovy 81 has been seted up to upper cover plate 8 bottom, forms the accommodation space 9 that is used for placing lever 4 between standing groove 311 and the inner groovy 81, and upper cover plate 8 covers with mounting panel 31 and closes and be connected. Wherein, lever 4 is close to front end position both sides an organic whole and is connected with limiting plate 41, and the spacing hole 312 has all been seted up to the cell wall that lies in standing groove 311 both sides on the mounting panel 31, and limiting plate 41 pegs graft and fixes in spacing hole 312. Through upper cover plate, mounting panel, limiting plate and spacing hole, can be with the lever spacing fixing on the horizontal pole completely, can prevent that it from producing the slippage in the experimentation, and influence experimental progress and precision.
The sample holding mechanism 6 includes:
the upper clamp body 61, the upper clamp body 61 is fixedly connected with the front end of the lever 4;
the lower clamp body 62 is arranged on the workbench 1, and the position of the lower clamp body 62 corresponds to that of the upper clamp body 61.
Be provided with protruding 621 on the lower fixture body 62, creep detection system 7 includes:
the pressure sensitive switch 71, the pressure sensitive switch 71 is hinged on the work bench 1 through the support 10, the pressure sensitive switch 71 is abutted with the projection 621;
a timer 72, wherein the timer 72 is arranged on the workbench 1 and is electrically connected with the pressure-sensitive switch 71;
an optical distance meter 73, the optical distance meter 73 being disposed on the upper clamp body 61;
and a power switch 74, wherein the power switch 74 is arranged on the workbench 1 and is electrically connected with the pressure sensitive switch 71, the timer 72 and the optical distance meter 73.
Wherein, the total weight of the upper clamp body 61, the optical distance measuring instrument 73 and the lower clamp body 62 is 4 times of the weight of the lever 4, and according to the lever principle, the influence of the upper clamp and the lower clamp on the load of the sample can be ignored during the test, and the load can be accurately carried out on the sample through the weight.
The lever 4 is provided with weight plates 5, wherein the lever can be uniformly divided into twelve equal parts, the lever is connected with the upper clamp body at the first equal part, the lever is rotatably connected with the cross rod at the second equal part, the weight plates can be loaded randomly at the third equal part to the twelfth equal part, loads with different degrees can be applied to the samples, and the range of applying the loads to the samples is increased.
The tester can simultaneously carry out a plurality of groups of tests, thereby improving the efficiency; the lever is equally divided, and a multi-moment mode is adopted, so that the range of applying load to the sample is expanded; the optical distance measuring instrument selects a CMOS laser sensor of Panasonic electric appliance and mechanical and electrical (China) Limited company, the creep elongation and the creep rupture of the optical distance measuring instrument can be accurately measured, the test repetition precision is 10 mu m, the length change is recorded in real time, and compared with the existing testing device, the accuracy is greatly improved in the aspect of recording data per minute and mm-level precision.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The geosynthetic material creep performance tester is characterized by comprising:
a working table (1),
the supporting frame (2) is arranged at the top end of the workbench (1), and a cross rod (3) is arranged on the supporting frame (2);
the device comprises a plurality of levers (4), the levers (4) are arranged side by side on the cross rod (3) at intervals, the positions, close to the front ends, of the levers (4) are rotatably connected with the cross rod (3), and weight plates (5) are arranged on the levers (4);
the sample clamping mechanisms (6) are multiple, and the multiple sample clamping mechanisms (6) are respectively in one-to-one correspondence with the multiple levers (4) and are arranged at the front ends of the levers (4); and
a creep detection system (7), the creep detection system (7) being disposed on the table (1).
2. Geosynthetic creep performance tester as claimed in claim 1, wherein rotatable mounting plates (31) are provided at intervals on the cross bar (3), the lever (4) being provided on the mounting plates (31) near its front position.
3. Geosynthetic creep performance tester as claimed in claim 2, wherein the mounting plate (31) is pivotally connected at both side ends to the cross bar (3).
4. The creep property tester for geosynthetics according to claim 3, wherein the mounting plate (31) is connected with a rotating shaft (32) at both ends, and the rotating shaft (32) is inserted into and rotatably connected with the cross bar (3).
5. The creep property tester for geosynthetics according to claim 4, wherein a placement groove (311) is formed in the mounting plate (31), and the lever (4) is clamped in the placement groove (311).
6. The geosynthetic creep performance tester of claim 5, further comprising: upper cover plate (8), inner groovy (81) have been seted up to upper cover plate (8) bottom, standing groove (311) with form between inner groovy (81) and be used for placing accommodation space (9) of lever (4), just upper cover plate (8) with mounting panel (31) lid closes and is connected.
7. The geosynthetic material creep performance tester of claim 6, wherein the lever (4) is integrally connected with a limiting plate (41) on both sides of the front end, the mounting plate (31) is provided with a limiting hole (312) on both side walls of the placing groove (311), and the limiting plate (41) is inserted and fixed in the limiting hole (312).
8. Geosynthetic creep performance tester as claimed in any of claims 1-7, wherein the specimen holding mechanism (6) comprises:
the upper clamp body (61), the upper clamp body (61) is fixedly connected with the front end of the lever (4);
the lower clamp body (62) is arranged on the workbench (1), and the position of the lower clamp body (62) corresponds to that of the upper clamp body (61).
9. The geosynthetic material creep performance tester of claim 8, wherein the lower clamp body (62) is provided with a protrusion (621), and the creep detection system (7) comprises:
the pressure-sensitive switch (71), the said pressure-sensitive switch (71) is hinged on the said work level (1) through the support (10), and abut against the said projection (621);
a timer (72), wherein the timer (72) is arranged on the workbench (1) and is electrically connected with the pressure-sensitive switch (71);
the optical distance measuring instrument (73), the optical distance measuring instrument (73) is arranged on the upper clamp body (61) and is electrically connected with an external computer;
a power switch (74), wherein the power switch (74) is arranged on the workbench (1) and is electrically connected with the pressure-sensitive switch (71), the timer (72) and the optical distance meter (73).
10. Geosynthetic material creep performance tester as claimed in claim 9, wherein the total weight of the upper clamp body (61), the optical distance meter (73), the lower clamp body (62) is 4 times the weight of the lever (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921244383.1U CN210665254U (en) | 2019-08-02 | 2019-08-02 | Geosynthetic material creep property tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921244383.1U CN210665254U (en) | 2019-08-02 | 2019-08-02 | Geosynthetic material creep property tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210665254U true CN210665254U (en) | 2020-06-02 |
Family
ID=70819790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921244383.1U Expired - Fee Related CN210665254U (en) | 2019-08-02 | 2019-08-02 | Geosynthetic material creep property tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210665254U (en) |
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2019
- 2019-08-02 CN CN201921244383.1U patent/CN210665254U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200602 |
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| CF01 | Termination of patent right due to non-payment of annual fee |