CN216594519U - Transparent soil model indoor test device for simulating approaching shield tunnel - Google Patents
Transparent soil model indoor test device for simulating approaching shield tunnel Download PDFInfo
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- CN216594519U CN216594519U CN202122863696.9U CN202122863696U CN216594519U CN 216594519 U CN216594519 U CN 216594519U CN 202122863696 U CN202122863696 U CN 202122863696U CN 216594519 U CN216594519 U CN 216594519U
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- 239000002689 soil Substances 0.000 title claims abstract description 30
- 238000012360 testing method Methods 0.000 title claims abstract description 15
- 239000011521 glass Substances 0.000 claims abstract description 26
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 238000004088 simulation Methods 0.000 claims abstract description 14
- 238000009533 lab test Methods 0.000 claims 2
- 238000010276 construction Methods 0.000 abstract description 6
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000002474 experimental method Methods 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000000917 particle-image velocimetry Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001678 irradiating effect Effects 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
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Abstract
The utility model discloses a transparent soil model indoor test device for simulating an approaching shield tunnel, which is characterized by consisting of an organic glass model box, a simulated shield tunnel, a sheet laser, an industrial camera, a pressure loading plate, a force transmission rod and a pressure transmission plate; through the transparent soil model indoor test device of the proximity shield tunnel of the simulation multi-angle and multi-space, the practical problem of the proximity construction of the shield tunnel is combined, additional stress is carried out on the proximity shield tunnel through the simulation of the proximity shield tunnel, functions such as automatic monitoring and multi-working-condition conversion under indoor conditions are realized through the combination of a monitoring system, the property change of a continuous displacement field and structural stress in a soil body can be observed visually, and certain guiding significance is achieved for practical construction.
Description
Technical Field
The utility model relates to the technical field of professional application research of tunnel engineering, in particular to a transparent soil model indoor test device for simulating a proximity shield tunnel; the method is suitable for simulating the deformation condition of the shield tunnel with different crossing angles and intervals under different stress conditions indoors.
Background
With the rapid development of the shield tunnel, the difficult problems encountered by various proximity projects are more and more prominent. The stratum effect and the mechanical behavior of the structure caused by the proximity shield tunnel are very complex, when the mutual influence is obvious, the tunnel structure and surrounding rock are stably damaged, therefore, additional stress, deformation monitoring and analysis and research are very important, at present, the test for multi-angle multi-interval type proximity construction engineering is relatively few, the practical engineering construction cannot be guided, and the continuous displacement field in the soil body cannot be observed in the field actual measurement, the problems of complex stratum, difficult embedding of test devices and the like exist, the limitation is large, and therefore, the development of the transparent soil model indoor test device for simulating the interaction between the proximity shield tunnels is very important.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide a transparent soil model indoor test device for simulating an approaching shield tunnel.
The technical scheme provided by the utility model is as follows: a transparent soil model indoor test device for simulating an approaching shield tunnel is characterized by comprising an organic glass model box, an upper simulated shield tunnel, a lower simulated shield tunnel, a sheet laser, two industrial cameras, a pressure loading plate, a dowel bar and a pressure transmitting plate;
the organic glass model box is an integral rectangular box body, scales are marked on the front, the rear, the left and the right sides of the box body, the upper end of the box body is open, and transparent soil is filled in the box body; the upper simulation shield tunnel and the lower simulation shield tunnel are respectively arranged in the box body from top to bottom and are surrounded by transparent soil; the sheet light laser is arranged on the front side of the outer box body of the organic glass model box; the two industrial cameras are respectively arranged on the rear side of the outer box body of the organic glass model box and the right side of the box body; the upper end of the pressure loading plate is connected with a laboratory pressure machine, and the lower end of the pressure loading plate is connected with a pressure transmission plate through a force transmission rod; the pressure transmission plate is positioned right above the organic glass model box and moves up and down inside and outside the organic glass model box through an opening at the upper end of the box body.
Preferably, the upper simulated shield tunnel and the lower simulated shield tunnel are respectively an integral model and have hollow interior.
Preferably, the pressure transmission plate is consistent with the length and the width of the upper end side of the organic glass model box.
The utility model has the beneficial effects that:
1. the shield tunnel model is surrounded in the organic glass model box by transparent soil to simulate the change of the behavior of the interaction of the proximity tunnel under different loads, and the change of the behavior of a continuous displacement field and structural stress in the soil body can be observed visually;
2. various working conditions are simulated by arranging the proximity shield tunnels with different angles and different intervals;
3. the behavior change and the peripheral displacement field change of the multi-angle multi-interval proximity shield tunnel under different loads can be visualized through the PIV technology, and the mutual influence rule between the proximity tunnels can be studied more intuitively;
4. the reasonable vertical crossing form of the proximity shield tunnel can be preliminarily demonstrated based on an indoor model test with a small scale, and the guidance of actual engineering construction is facilitated.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a structural elevation of the present invention.
In the figure: the system comprises an organic glass model box 1, an analog shield tunnel 2, an analog shield tunnel 3, 4 optical lasers, an industrial camera 5, a pressure loading plate 6, a dowel bar 7, a pressure transmission plate 8 and a graduated scale 9.
Detailed Description
For a better understanding and appreciation of the utility model, specific embodiments thereof are described in detail below with reference to the accompanying drawings.
As shown in fig. 1 and 2, a transparent soil model indoor test device for simulating a proximity shield tunnel is composed of an organic glass model box 1, an upper simulation shield tunnel 2, a lower simulation shield tunnel 3, a sheet laser 4, two industrial cameras 5, a pressure loading plate 6, a dowel bar 7 and a pressure transmission plate 8;
the organic glass model box 1 is an integral rectangular box body and is made of organic glass with a certain thickness, scale rulers 9 are marked on the front side, the rear side, the left side and the right side of the box body, the upper end of the box body is open, and transparent soil is filled in the box body; the upper simulation shield tunnel 2 and the lower simulation shield tunnel 3 are integrated models made of elastic materials similar to those of the construction shield tunnel, the internal parts of the models are hollow, and the upper simulation shield tunnel 2 and the lower simulation shield tunnel 3 are respectively arranged in the box body from top to bottom and are surrounded by transparent soil; the sheet laser 4 is arranged on the front side of the outer box body of the organic glass model box 1; two industrial cameras 5 are respectively arranged on the rear side of the outer box body and the right side of the outer box body of the organic glass model box 1; the upper end of the pressure loading plate 6 is connected with a laboratory pressure machine, and the lower end is connected with a pressure transmission plate 8 through a force transmission rod 7; pass the clamp plate 8 and be located organic glass mold box 1 directly over, pass clamp plate 8 and organic glass mold box 1 upper end uncovered length width unanimous, reciprocate inside and outside organic glass mold box 1 through box upper end uncovered.
The utility model discloses a test method of a transparent soil model indoor test device for simulating an approaching shield tunnel, which is used for simulating the interaction between multi-angle and multi-space shield tunnel structures in a soil body under different loads and comprises the following steps:
1) filling transparent soil into the organic glass model box 1 according to the height of the lower simulated shield tunnel 3 required by the experiment, placing the lower simulated shield tunnel 3 after reaching the required height through the calibration scale 9, continuously filling the transparent soil into the calibration scale 9 to the required height according to the required distance between the upper simulated shield tunnel and the lower simulated shield tunnel, placing the upper simulated shield tunnel 2 according to the angle required by the experiment between the upper simulated shield tunnel and the lower simulated shield tunnel, and continuously filling the transparent soil to the upper end opening height;
2) erecting the sheet laser 4 and the two industrial cameras 5 to corresponding positions, and adjusting the height and the angle;
3) starting the sheet optical laser 4, and irradiating the soil body to obtain a speckle field;
4) after the model box is kept still for a period of time, loading by using a laboratory press according to the pressure required by the experiment; in the pressing process, two industrial cameras 5 are used for continuously acquiring the change images of the soil speckle fields around the transverse direction and the longitudinal direction of the two shield tunnels, and after the required load is reached, the acquisition is continued until the images do not change any more;
5) saving the pictures, closing and arranging the experimental equipment;
6) and processing the test image by using PIV particle image velocimetry software to obtain the horizontal and vertical displacement changes of the surrounding soil body of the multi-angle multi-space proximity shield tunnel under different stress conditions and the behavior change and mutual influence rule of the stress of the shield tunnel.
It should be understood that technical features not described in detail in the specification belong to the prior art. Although the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above embodiments, which are only illustrative and not restrictive, and those skilled in the art can make various modifications without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (3)
1. A transparent soil model indoor test device for simulating a proximity shield tunnel is characterized by consisting of an organic glass model box (1), an upper simulation shield tunnel (2), a lower simulation shield tunnel (3), a sheet laser (4), two industrial cameras (5), a pressure loading plate (6), a dowel bar (7) and a pressure transmitting plate (8);
the organic glass model box (1) is an integral rectangular box body, graduated scales (9) are marked on the front, the rear, the left and the right sides of the box body, the upper end of the box body is open, and transparent soil is filled in the box body; the upper simulation shield tunnel (2) and the lower simulation shield tunnel (3) are respectively arranged in the box body from top to bottom and are surrounded by transparent soil; the sheet light laser (4) is arranged on the front side of the outer box body of the organic glass model box (1); the two industrial cameras (5) are respectively arranged on the rear side of the outer box body and the right side of the outer box body of the organic glass model box (1); the upper end of the pressure loading plate (6) is connected with a laboratory pressure machine, and the lower end of the pressure loading plate is connected with a pressure transmission plate (8) through a force transmission rod (7); the pressure transmission plate (8) is positioned right above the organic glass model box (1) and moves up and down inside and outside the organic glass model box (1) through an opening at the upper end of the box body.
2. The transparent soil model laboratory test device for simulating an approaching shield tunnel according to claim 1, wherein the upper simulated shield tunnel (2) and the lower simulated shield tunnel (3) are respectively an integral model and have a hollow interior.
3. The transparent soil model laboratory test device for simulating an approaching shield tunnel according to claim 1, wherein the pressure transmission plate (8) is consistent with the length and width of the upper end side of the organic glass model box (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122863696.9U CN216594519U (en) | 2021-11-22 | 2021-11-22 | Transparent soil model indoor test device for simulating approaching shield tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122863696.9U CN216594519U (en) | 2021-11-22 | 2021-11-22 | Transparent soil model indoor test device for simulating approaching shield tunnel |
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| Publication Number | Publication Date |
|---|---|
| CN216594519U true CN216594519U (en) | 2022-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122863696.9U Expired - Fee Related CN216594519U (en) | 2021-11-22 | 2021-11-22 | Transparent soil model indoor test device for simulating approaching shield tunnel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115132048A (en) * | 2022-06-28 | 2022-09-30 | 中铁四院集团西南勘察设计有限公司 | Simulation test device and test method for proximity construction in built tunnel area |
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2021
- 2021-11-22 CN CN202122863696.9U patent/CN216594519U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115132048A (en) * | 2022-06-28 | 2022-09-30 | 中铁四院集团西南勘察设计有限公司 | Simulation test device and test method for proximity construction in built tunnel area |
| CN115132048B (en) * | 2022-06-28 | 2023-11-28 | 中铁四院集团西南勘察设计有限公司 | Simulation test device and test method for proximity construction in established tunnel area |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220524 |