CN211477907U - Experimental device for displacement and strain at maximum bending moment position under stress and in measurement of subway station - Google Patents
Experimental device for displacement and strain at maximum bending moment position under stress and in measurement of subway station Download PDFInfo
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- CN211477907U CN211477907U CN201922308805.3U CN201922308805U CN211477907U CN 211477907 U CN211477907 U CN 211477907U CN 201922308805 U CN201922308805 U CN 201922308805U CN 211477907 U CN211477907 U CN 211477907U
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- subway station
- displacement
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- shaped groove
- displacement meter
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Abstract
The utility model relates to an experimental device for measuring displacement and strain at the maximum bending moment and bearing force of a subway station, which comprises a U-shaped groove, wherein the U-shaped groove comprises a horizontal bottom plate and two vertical side plates at two sides, and a transverse reaction frame is arranged between the tops of the two side plates; the subway station reduced scale model is placed on a bottom plate of the U-shaped groove; arranging a lateral bearing plate outside the side wall of the subway station reduced scale model, and arranging a transverse jack between the lateral bearing plate and the U-shaped groove side plate to simulate uniformly distributed soil pressure; the top plate of the subway station reduced scale model is provided with a vertical bearing plate, and a vertical jack is arranged between the vertical bearing plate and the reaction frame to simulate the uniformly distributed soil pressure. The utility model discloses be different from traditional loading mode, use jack simulation soil pressure, optimized subway station model atress experiment, saved material and time, can also be fine simulate out pressure, measure the displacement and the meeting an emergency of maximum bending moment department.
Description
Technical Field
The utility model relates to a subway station simulation experiment device, concretely relates to subway station atress and the experimental apparatus of measuring maximum bending moment department displacement and strain.
Background
In a general subway station model experiment, a loading mode is usually to simulate loading by using soil and sand, and although the loading mode can achieve the purpose of loading, the loading mode is time-consuming and consumable.
Disclosure of Invention
The utility model aims at providing a subway station atress and the experimental apparatus of measuring maximum bending moment department displacement and strain simulate soil pressure based on the jack, overcome prior art's defect.
The utility model discloses the technical scheme who adopts does:
experimental device of subway station atress and measurement maximum bending moment department displacement and strain, its characterized in that:
the device comprises a U-shaped groove, the U-shaped groove comprises a horizontal bottom plate and side plates which are vertical at two sides, and a transverse reaction frame is arranged between the tops of the side plates at the two sides;
the subway station reduced scale model is placed on a bottom plate of the U-shaped groove; arranging a lateral bearing plate outside the side wall of the subway station reduced scale model, and arranging a transverse jack between the lateral bearing plate and the U-shaped groove side plate to simulate uniformly distributed soil pressure; the top plate of the subway station reduced scale model is provided with a vertical bearing plate, and a vertical jack is arranged between the vertical bearing plate and the reaction frame to simulate the uniformly distributed soil pressure.
The subway station scale model is of a multilayer structure, and a group of lateral bearing plates and jacks are arranged outside the side wall of each layer.
And lead bags for simulating layer loads are arranged on the middle plate and the bottom plate of the subway station reduced scale model.
The front of the U-shaped groove is provided with a vertical displacement meter fixing frame, a support extends out of the displacement meter fixing frame to the subway station reduced scale model to fix the displacement meter, and the displacement meter is arranged on the bottom surface of a top plate and the bottom surface of a middle plate of the subway station reduced scale model.
The displacement meter fixing frame is in a rod shape, a plurality of supports for fixing the displacement meter are longitudinally arranged on the displacement meter fixing frame, the displacement meter fixing frames are fixed on the displacement meter fixing frame bottom plate side by side, and the displacement meter fixing frame bottom plate is located in front of the U-shaped groove bottom plate.
And strain gauges are arranged on the inner side of the side wall, the outer side of the side wall, the top surface of the top plate and the bottom surface of the top plate of the subway station reduced scale model.
The utility model has the advantages of it is following:
the utility model discloses be different from traditional loading mode, arrange the model of subway station in the U-shaped groove, used the jack loading, on the side wall of subway station model, a fixed plate, then use the jack to go for the plate loading to this simulates the equipartition soil pressure of side direction, to the roof, adopts a fixed plate equally, simulates top soil pressure for the plate jack loading. The displacement meter is arranged at the center of the middle plate and the top plate between the two side walls and the frame columns, the displacement meter is arranged at the center of the top plate of the middle plate between the two frame columns, so that the displacement of the maximum bending moment of the model plate is measured, and the strain gauges are arranged at the positions of the frame columns of the top plate, the maximum bending moment and near the centers of the side walls to measure the strain.
Drawings
Fig. 1 is a view 1 structure diagram of the present invention.
Fig. 2 is a view 2 structure diagram of the present invention.
Fig. 3 is a view 3 structure of the present invention.
Fig. 4 is a view 4 structure diagram of the present invention.
In the figure, 1-subway station reduced scale model, 2-8-No. one-seven jacks, 9-U-shaped grooves, 10-reaction frames, 11-13-No. one-three lateral bearing plates, 14-displacement meter fixing frames, 15-vertical bearing plates, 16-24-No. one-nine displacement meters, 25-displacement meter fixing frame bottom plates, 26-34-No. one-nine lead bags and 35-41-No. one-seven strain gauges.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
The utility model relates to an experimental device for measuring displacement and strain at the maximum bending moment position under stress of a subway station, which comprises a U-shaped groove 9, wherein the U-shaped groove 9 comprises a horizontal bottom plate and two vertical side plates at two sides, and a transverse reaction frame 10 is arranged between the tops of the side plates at two sides; the subway station reduced scale model 1 is placed on a bottom plate of the U-shaped groove 9; arranging a lateral bearing plate outside the side wall of the subway station reduced scale model 1, and arranging a transverse jack between the lateral bearing plate and the side plate of the U-shaped groove 9 to simulate the uniformly distributed soil pressure; the top plate of the subway station reduced scale model 1 is provided with a vertical bearing plate 15, and a vertical jack is arranged between the vertical bearing plate 15 and the reaction frame 10 to simulate the uniformly distributed soil pressure.
The subway station reduced scale model 1 is of a multilayer structure, and a group of lateral bearing plates and jacks are arranged outside the side wall of each layer.
And lead bags for simulating layer loads are arranged on the middle plate and the bottom plate of the subway station reduced scale model 1.
A vertical displacement meter fixing frame 14 is arranged in front of the U-shaped groove 9, a support extends out of the displacement meter fixing frame 14 to the subway station reduced scale model 1 to fix the displacement meter, and the displacement meter is arranged on the bottom surface of a top plate and the bottom surface of a middle plate of the subway station reduced scale model 1. The displacement meter fixing frame 14 is in a rod shape, a plurality of supports for fixing the displacement meter are longitudinally arranged on the displacement meter fixing frame 14, the displacement meter fixing frame 14 is fixed on a displacement meter fixing frame bottom plate 25 side by side, and the displacement meter fixing frame bottom plate 25 is positioned in front of the bottom plate of the U-shaped groove 9.
The inner side of the side wall, the outer side of the side wall, the top surface of the top plate and the bottom surface of the top plate of the subway station reduced scale model 1 are all provided with strain gauges.
Referring to fig. 1-4, firstly, a subway station reduced scale model 1 is placed in a U-shaped groove 9, lateral bearing plates for bearing the load of a jack are arranged on the side walls of two sides, a vertical bearing plate 15 is arranged on a top plate, the jack acts on the central position of the lateral bearing plates to simulate uniformly distributed soil pressure, the jack also acts on the central position of the vertical bearing plate 15 above the top plate to simulate uniformly distributed soil pressure, and a reaction frame 10 is used for restraining; and arranging a displacement meter, fixing the displacement meter on a bottom plate by using a displacement meter fixing frame, and placing a lead bag to simulate the load of each layer of the station.
The content of the present invention is not limited to the examples, and any equivalent transformation adopted by the technical solution of the present invention is covered by the claims of the present invention by those skilled in the art through reading the present invention.
Claims (6)
1. Experimental device of subway station atress and measurement maximum bending moment department displacement and strain, its characterized in that:
the device comprises a U-shaped groove (9), wherein the U-shaped groove (9) comprises a horizontal bottom plate and side plates which are vertical on two sides, and a transverse reaction frame (10) is arranged between the tops of the side plates on the two sides;
the subway station reduced scale model (1) is placed on a bottom plate of the U-shaped groove (9); lateral bearing plates are arranged outside the side walls of the subway station reduced scale model (1), and transverse jacks are arranged between the lateral bearing plates and the side plates of the U-shaped groove (9) to simulate the uniformly distributed soil pressure; vertical bearing plates (15) are arranged on the top plate of the subway station reduced scale model (1), and vertical jacks are arranged between the vertical bearing plates (15) and the reaction frame (10) to simulate uniformly distributed soil pressure.
2. The experimental device for measuring displacement and strain at maximum bending moment under stress of subway stations as claimed in claim 1, wherein:
the subway station reduced scale model (1) is of a multilayer structure, and a group of lateral bearing plates and jacks are arranged outside the side wall of each layer.
3. The experimental device for measuring the maximum bending moment displacement and the strain of the subway station according to claim 2, wherein:
lead bags simulating layer loads are arranged on the middle plate and the bottom plate of the subway station reduced scale model (1).
4. The experimental device for measuring the maximum bending moment displacement and the strain of the subway station according to claim 3, wherein:
a vertical displacement meter fixing frame (14) is arranged in front of the U-shaped groove (9), a support extends out of the displacement meter fixing frame (14) to the subway station reduced scale model (1) to fix the displacement meter, and the displacement meter is arranged on the bottom surface of a top plate and the bottom surface of a middle plate of the subway station reduced scale model (1).
5. The experimental device for measuring the maximum bending moment displacement and the strain of the subway station according to claim 4, wherein:
the displacement meter fixing frame (14) is in a rod shape, a plurality of supports for fixing the displacement meter are longitudinally arranged on the displacement meter fixing frame (14), the displacement meter fixing frame fixing frames (14) are fixed on a displacement meter fixing frame bottom plate (25) side by side, and the displacement meter fixing frame bottom plate (25) is positioned in front of the bottom plate of the U-shaped groove (9).
6. The experimental device for measuring the maximum bending moment displacement and the strain of the subway station according to claim 5, wherein:
the inner side of the side wall, the outer side of the side wall, the top surface of the top plate and the bottom surface of the top plate of the subway station reduced scale model (1) are respectively provided with a strain gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922308805.3U CN211477907U (en) | 2019-12-20 | 2019-12-20 | Experimental device for displacement and strain at maximum bending moment position under stress and in measurement of subway station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922308805.3U CN211477907U (en) | 2019-12-20 | 2019-12-20 | Experimental device for displacement and strain at maximum bending moment position under stress and in measurement of subway station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211477907U true CN211477907U (en) | 2020-09-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922308805.3U Active CN211477907U (en) | 2019-12-20 | 2019-12-20 | Experimental device for displacement and strain at maximum bending moment position under stress and in measurement of subway station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211477907U (en) |
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2019
- 2019-12-20 CN CN201922308805.3U patent/CN211477907U/en active Active
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