CN212722384U - Shield tunnel convergence measurement model test device based on laser convergence instrument - Google Patents
Shield tunnel convergence measurement model test device based on laser convergence instrument Download PDFInfo
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- CN212722384U CN212722384U CN202021612049.XU CN202021612049U CN212722384U CN 212722384 U CN212722384 U CN 212722384U CN 202021612049 U CN202021612049 U CN 202021612049U CN 212722384 U CN212722384 U CN 212722384U
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Abstract
The utility model relates to a shield tunnel convergence model test device of measurationing based on laser convergence appearance. The invention aims to provide a shield tunnel convergence measurement model test device based on a laser convergence instrument. The technical scheme of the invention is as follows: the utility model provides a shield tunnel convergence measurement model test device based on laser convergence appearance which characterized in that: the device comprises a tunnel model and a directional pressurizing device capable of applying pressure to the outer wall of the tunnel model, wherein a laser convergence instrument used for acquiring deformation analysis data of the tunnel model is arranged in the tunnel model. The method is suitable for the field of shield tunnel construction convergence measurement.
Description
Technical Field
The utility model relates to a shield tunnel convergence model test device of measurationing based on laser convergence appearance. The method is suitable for the field of convergence measurement of shield tunnel construction.
Background
In recent years, the mileage of subways in China is rapidly increased, shield tunnels are underground, the requirements on structural deformation are extremely high, and tunnel convergence measurement is an important work content in the work of monitoring the structural deformation of tunnels.
Small non-contact measuring instruments such as laser convergence instruments have been widely used in deformation and safety monitoring of tunnels and underground engineering structures, and more experts and scholars have developed tunnel model test devices. At present, an experiment simulation device for monitoring a tunnel mainly focuses on measurement and simulation of a horseshoe-shaped tunnel, and a shield tunnel is less in experiment simulation device.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: aiming at the existing problems, the shield tunnel convergence measurement model test device based on the laser convergence instrument is provided.
The utility model adopts the technical proposal that: the utility model provides a shield tunnel convergence measurement model test device based on laser convergence appearance which characterized in that: the device comprises a tunnel model and a directional pressurizing device capable of applying pressure to the outer wall of the tunnel model, wherein a laser convergence instrument used for acquiring deformation analysis data of the tunnel model is arranged in the tunnel model.
The directional pressurizing device is provided with an outer steel round pipe and an inner steel thin-wall pipe coaxially arranged in the outer steel round pipe, and the outer steel round pipe is connected with the inner steel thin-wall pipe through a steel bar;
and a plurality of threaded holes are uniformly formed in the outer steel circular tube in the circumferential direction, long screws penetrate through the threaded holes, the outer ends of the long screws are positioned on the outer side of the outer steel circular tube, and the inner ends of the long screws are abutted to the inner steel thin-wall tube and used for applying pressure.
The tunnel model is formed by splicing a plurality of segment models.
The laser convergence instrument is fixed on the inner wall of the tunnel model through a support, and rays of the laser convergence instrument irradiate on the inner wall of the tunnel model.
The utility model has the advantages that: the utility model can apply the directional pressure to the tunnel model in a grading way and in multiple directions by matching the torque wrench with the long bolt on the directional pressurizing device, so that the tunnel model deforms; the deformation of the tunnel segment generated by the directional pressure in different directions is qualitatively judged by the laser convergence instrument, and the device is simple in structure and convenient to operate.
Drawings
Fig. 1 is a schematic structural diagram of the embodiment.
FIG. 2 is a schematic structural diagram of an orientation pressurizing device in an embodiment.
Fig. 3 is a schematic structural diagram of a tunnel model in the embodiment.
FIG. 4 is a schematic diagram of a preparatory setup before the test in the example.
In the figure: 1. a long screw; 2. reinforcing steel bars; 3. an outer steel circular tube; 4. an inner steel thin-walled tube; 5. a torque wrench; 7. a segment model; 8. a support; 9. a laser convergence instrument; 10. ray of a laser convergence gauge; 11. a force sensor.
Detailed Description
As shown in fig. 1, the present embodiment is a shield tunnel convergence measurement model test apparatus based on a laser convergence instrument, which includes a tunnel model and a directional pressurizing apparatus capable of applying pressure to an outer wall of the tunnel model, and the tunnel model is provided with the laser convergence instrument for acquiring data of deformation analysis of the tunnel model.
As shown in fig. 2, the directional pressurizing device in this embodiment has an outer steel circular tube and an inner steel thin-wall tube coaxially disposed in the outer steel circular tube, and the outer steel circular tube and the inner steel thin-wall tube are connected by a steel bar. In the embodiment, the outer steel round pipe has a certain thickness and is not easy to deform, and a plurality of threaded holes are uniformly drilled in the round pipe. The long bolt is arranged in the threaded hole of the outer steel round pipe in a penetrating mode, the outer end of the long bolt is located on the outer side of the outer steel round pipe, the inner end of the long bolt is connected with the inner steel thin-wall pipe in a propping mode, and the torque wrench can act on the outer end of the long bolt to enable the inner end of the long bolt to apply pressure to the inner steel thin-wall pipe.
In the embodiment, the tunnel model is arranged in the inner side steel thin-wall pipe, and the inner side steel thin-wall pipe can transmit the pressure to the tunnel model. As shown in fig. 3, in this embodiment, the tunnel model is formed by splicing 6 segment models, a laser convergence instrument is mounted on the inner wall of the tunnel model through a support, and a ray of the laser convergence instrument is aligned to a boundary between the segment model and the segment model.
The steps of measuring the deformation of the tunnel caused by stress by using the embodiment are as follows:
preparation before the test: as shown in fig. 4, the torque wrench is rotated to measure the force generated by the long screw on the force sensor, the pressure applied to the force sensor under different torques is recorded, and the force sensor is removed after the recording.
The method comprises the following steps: assembling the segment model through gypsum, and putting the segment model into an inner steel thin-walled tube of a directional pressurizing device;
step two: mounting the laser convergence instrument on a laser convergence instrument bracket;
step three: and (3) rotating a long screw needing to apply force by using a torque wrench, and analyzing the deformation of the pipeline model by using data obtained by a laser convergence instrument.
The above-mentioned embodiment is only used for explaining the utility model concept, and not to the limit of the utility model protection, and all utilize this concept to be right the utility model discloses carry out insubstantial change, all shall fall into the scope of protection of the utility model.
Claims (4)
1. The utility model provides a shield tunnel convergence measurement model test device based on laser convergence appearance which characterized in that: the device comprises a tunnel model and a directional pressurizing device capable of applying pressure to the outer wall of the tunnel model, wherein a laser convergence instrument (9) used for acquiring deformation analysis data of the tunnel model is arranged in the tunnel model.
2. The test device of the shield tunnel convergence measurement model based on the laser convergence instrument as claimed in claim 1, wherein: the directional pressurizing device is provided with an outer steel round pipe (3) and an inner steel thin-wall pipe (4) coaxially arranged in the outer steel round pipe (3), and the outer steel round pipe (3) is connected with the inner steel thin-wall pipe (4) through a steel bar (2);
a plurality of threaded holes are uniformly formed in the outer steel round pipe (3) in the circumferential direction, long screws (1) penetrate through the threaded holes, the outer ends of the long screws (1) are located on the outer side of the outer steel round pipe (3), and the inner ends of the long screws (1) are connected with the inner steel thin-wall pipe (4) in a jacking mode and used for applying pressure.
3. The test device of the shield tunnel convergence measurement model based on the laser convergence instrument as claimed in claim 1, wherein: the tunnel model is formed by splicing a plurality of segment models (7).
4. The test device of the shield tunnel convergence measurement model based on the laser convergence instrument as claimed in claim 1 or 3, wherein: the laser convergence instrument (9) is fixed on the inner wall of the tunnel model through a support (8), and rays (10) of the laser convergence instrument irradiate on the inner wall of the tunnel model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021612049.XU CN212722384U (en) | 2020-08-06 | 2020-08-06 | Shield tunnel convergence measurement model test device based on laser convergence instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021612049.XU CN212722384U (en) | 2020-08-06 | 2020-08-06 | Shield tunnel convergence measurement model test device based on laser convergence instrument |
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| Publication Number | Publication Date |
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| CN212722384U true CN212722384U (en) | 2021-03-16 |
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| CN202021612049.XU Active CN212722384U (en) | 2020-08-06 | 2020-08-06 | Shield tunnel convergence measurement model test device based on laser convergence instrument |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114322813A (en) * | 2021-12-24 | 2022-04-12 | 中电建路桥集团有限公司 | A three-dimensional laser scanning tunnel full coverage deformation monitoring test platform and method |
-
2020
- 2020-08-06 CN CN202021612049.XU patent/CN212722384U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114322813A (en) * | 2021-12-24 | 2022-04-12 | 中电建路桥集团有限公司 | A three-dimensional laser scanning tunnel full coverage deformation monitoring test platform and method |
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