CN213812792U - Structure model observation device for simulating tunnel vibration test in soft soil area - Google Patents
Structure model observation device for simulating tunnel vibration test in soft soil area Download PDFInfo
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- CN213812792U CN213812792U CN202022669241.9U CN202022669241U CN213812792U CN 213812792 U CN213812792 U CN 213812792U CN 202022669241 U CN202022669241 U CN 202022669241U CN 213812792 U CN213812792 U CN 213812792U
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Abstract
The utility model discloses a structural model observation device for simulating tunnel vibration test in soft soil area, which comprises a model outer box and a model inner box, wherein the model outer box and the model inner box are positioned above a vibration test bed and are formed by stacking a plurality of layers of frames; the two sides of the model outer box in the length direction are respectively provided with an upright post, a cross beam connected with the upright posts on the two sides of the model outer box is arranged above the model outer box, and a vertical jack capable of acting on the upper part of a test soil body of the model inner box is arranged on the cross beam; the inner wall of each layer of model outer box frame is vertically provided with a plurality of horizontal jacks which are horizontally placed and can act on the outer side wall of the corresponding frame of the model inner box, and a displacement sensor, a strain gauge, an acceleration sensor and a calibration speckle are embedded in the soil body of each layer of model inner box frame. The device can better realize the dynamic response characteristic of the tunnel lining and the rock-soil body closely connected with the lining under the working condition of soft soil under the conditions of uniformly distributed load and initial structural stress, and better simulate the stress state and the deformation characteristic of the soft soil in the vibration process.
Description
Technical Field
The utility model relates to a field, concretely relates to simulation weak soil area tunnel vibration test's structure model observation device.
Background
Tunnel construction inevitably can cause certain disturbance to adjacent pile foundation in tunnel engineering, geotechnical engineering and underground building engineering etc. discipline to lead to the pile foundation to produce a series of engineering problems such as uneven settlement. The observation device for the structural model of the tunnel vibration test is an important method and means for effectively relieving and avoiding the problems. The existing tunnel vibration test structure model is mainly used for simulating dynamic response of a tunnel structure and surrounding rocks in a non-soft soil working condition and influence of tunnel construction on surrounding buildings (structures), is usually suitable for tunnels under the conditions of a structural stress field and uniform load, and is rarely used for the disturbance research on adjacent pile foundations in the shield interval construction period and the operation period of a soft soil area.
In the approach construction of the subway shield and the existing bridge in the soft soil area, the physical and mechanical properties of the soft soil bottom layer are poor, the movement of the surrounding stratum can be caused in the construction process of the subway shield tunnel, and the stratum movement acts on the pile body to cause the additional deformation and the additional internal force of the pile body, so that the bearing capacity and the stability of the pile foundation can be influenced. The tunnel vibration test structure model not only comprises the mechanical response of the tunnel lining structure under the action of static load and dynamic load, but also is closely connected with a rock-soil body connected with the lining structure. The tunnel vibration structure test model can simulate the mechanical response and damage cracking development process of the lining structure and the peripheral rock-soil body in the excavation process and the vehicle running process to the maximum extent, so that the influence on the adjacent pile foundations can be truly and effectively reflected.
Based on the circumstances, the utility model provides a simulation weak soil area tunnel vibration test's structural model observation device can effectively solve above problem.
SUMMERY OF THE UTILITY MODEL
To the not enough of existence among the prior art, the utility model aims to provide a simulation weak soil area tunnel vibration test's structure model observation device.
In order to solve the technical problem, the utility model discloses a following technical scheme realizes:
a structural model observation device for simulating a tunnel vibration test in a soft soil area comprises a model outer box and a model inner box which are positioned above a vibration test bed and formed by stacking a plurality of layers of frames, wherein the model outer box and the model inner box are arranged in a one-to-one correspondence manner; upright posts are respectively arranged on two sides of the model outer box in the length direction, a cross beam connected with the upright posts on the two sides of the model outer box is arranged above the model outer box, and a vertical jack capable of acting on the upper part of a test soil body of the model inner box is arranged on the cross beam; the inner wall of each layer of model outer box frame is vertically provided with a plurality of horizontal jacks which are horizontally placed and can act on the outer side wall of the corresponding frame of the model inner box, a displacement sensor, a strain gage, an acceleration sensor and a calibration speckle are embedded in the soil body of each layer of model inner box frame for analyzing the stress field and the displacement field change of the soil body, and the soil body destruction form is observed.
As a preferred technical scheme of the utility model, the long limit inboard of every layer of model inner box frame is provided with the slide rail, the minor face both ends and the slide rail sliding fit of every layer of model inner box frame to the minor face that realizes every layer of model inner box frame removes along long limit.
As a preferred technical scheme of the utility model, the interval is provided with the outer container bearing that is located between the adjacent two-layer model outer container frame in the direction of height of stand, is used for realizing every layer of model outer container frame is along its length direction horizontal migration.
As the utility model discloses a preferred technical scheme, respectively set up a plurality of inner box bearings between the long limit of adjacent two-layer model inner box frame to guarantee model inner box frame length direction's horizontal migration.
As the utility model discloses a preferred technical scheme, press from both sides between the adjacent two-layer model inner box frame and be equipped with the rubber lining, prevent that the experimental soil body of model inner box from spilling.
As an optimal technical scheme of the utility model, the model outer container with every layer of frame of model inner box forms by rectangle aluminum alloy frame and toughened glass gomphosis, just toughened glass all is located the long side of model outer container.
As an optimized technical scheme of the utility model, the model outer container with the height of model inner box is the same.
As an optimal technical scheme of the utility model, a certain interval has between the adjacent two-layer model outer container frame.
As an optimal technical scheme of the utility model, the ejector pin end-to-end connection of vertical jack has the steel sheet, and the lower terminal surface of steel sheet contacts with the upper portion of the experimental soil body in the model inner box.
As a preferred technical solution of the present invention, the lower portion of the upright post is fixed to the upper end surface of the vibration test bed; the bottommost layer frame of the model outer box is fixed on the upper end face of the vibration test bed; and the bottommost layer frame of the model inner box is fixed on the upper end surface of the vibration test bed.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
the device can better realize tunnel lining under soft soil operating mode and the dynamic response characteristic under the circumstances of uniform load and initial structure stress with the geotechnical body that lining closely related, the stress state and the deformation characteristic of soft soil in the vibration process are simulated better, the influence of analysis soft soil area shield interval construction period and operation period to adjacent pile foundation, provide basic data for the subway tunnel construction in soft soil area, guarantee to reduce to minimum to the influence of adjacent pile foundation in the work progress, thereby guarantee the security of the lives and property better.
Drawings
Fig. 1 is a schematic view of the structure of the present invention;
fig. 2 is a schematic top view of the present invention;
fig. 3 is a schematic diagram of the internal structure of the inner box of the model of the present invention.
Reference numerals: 1-a model outer box frame; 2-outer box bearings; 3-upright column; 4-a cross beam; 5-a transverse jack; 6-a slide rail; 7-inner mould box frame; 8-test soil body; 9-toughened glass; 10-vibration test table top; 11-rubber lining; 12-vertical jacks; 13-inner box bearings.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the following description of the preferred embodiments of the present invention is given with reference to the accompanying examples, but it should be understood that the drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
As shown in fig. 1, this embodiment provides a structural model observation device for simulating tunnel vibration test in soft soil area subway construction and operation process, including model outer container and model inner box that are located vibration test bench top and are piled up by multilayer frame and form, just one-to-one sets up between the multilayer frame of model outer container and model inner box. The model outer container with every layer of frame of model inner box forms by rectangle aluminum alloy frame and 9 gomphosis of toughened glass, just toughened glass 9 all is located the long side of model outer container is convenient for observe the inside deformation condition of soil body. The model outer box and the model inner box are the same in height.
As shown in fig. 2, two upright columns 3 are respectively arranged on two sides of the model outer box in the length direction, two cross beams 4 connected with the upright columns 3 on the two sides of the model outer box are arranged above the model outer box, and vertical jacks 12 capable of acting on the upper part of a test soil body 8 of the model inner box are arranged on the cross beams 4; the tail end of the ejector rod of the vertical jack 12 is connected with a steel plate, and the lower end face of the steel plate is in contact with the upper portion of the test soil body 8 in the model inner box.
Specifically, as shown in fig. 2, the bottommost frame of the model outer box is fixed on the upper end surface of the vibration test bed, the inner wall of each layer of the model outer box frame 1 is vertically provided with a plurality of horizontal jacks 5 which are horizontally arranged and can act on the outer side wall of the corresponding frame of the model inner box, and a displacement sensor, a strain gage, an acceleration sensor and a calibration speckle which are used for analyzing the stress field and the displacement field change of the soil body are embedded in the soil body of each layer of the model inner box frame 7, so that the soil body destruction form is observed. Further, the inside wall of the long side of the model outer box frame 1 is respectively provided with four horizontal jacks 5, and the inside wall of the short side is provided with two horizontal jacks 5.
Specifically, as shown in fig. 1, the lower portion of the upright column 3 is fixed to the upper end face of the vibration test bed, outer tank bearings 2 located between two adjacent layers of model outer tank frames 1 are arranged on the upright column 3 in the height direction at intervals, and the bearings 2 are vertically fixed to the inner side wall of the upright column through shafts, so that each layer of model outer tank frame 1 horizontally moves along the length direction of the model outer tank frame, and a certain distance is ensured between two adjacent layers of model outer tank frames 1.
Wherein, as shown in fig. 2, the bottommost layer frame of the inner box of the model is fixed on the upper end surface of the vibration test bed, the inner side of the long side of the inner box frame 7 of each layer of the model is provided with a slide rail 6, and the two ends of the short side of the inner box frame 7 of each layer of the model are in sliding fit with the slide rail 6, so that the short side of the inner box frame 7 of each layer of the model moves along the long side.
As shown in fig. 3, a plurality of inner box bearings 13 are respectively disposed between the long sides of the two adjacent layers of the model inner box frames 7 to ensure the horizontal movement of the model inner box frames 7 in the length direction. And a rubber lining 11 is clamped between the two adjacent layers of model inner box frames 7 to prevent the test soil body 8 of the model inner box from leaking.
According to the utility model discloses a description and attached drawing, the field technical personnel make or use very easily the utility model discloses a structural model observation device of simulation weak soil area tunnel vibration test to can produce the utility model discloses the positive effect that records.
Unless otherwise specified, in the present invention, if the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are used for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.
Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass both fixed and removable connections, or integral connections; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the technical matters of the present invention all fall into the protection scope of the present invention to any simple modification and equivalent change of the above embodiments.
Claims (10)
1. The utility model provides a simulation soft soil area tunnel vibration test's structure model observation device which characterized in that: the vibration test device comprises a model outer box and a model inner box which are positioned above a vibration test bed and formed by stacking a plurality of layers of frames, wherein the model outer box and the model inner box are arranged in a one-to-one correspondence manner; upright posts are respectively arranged on two sides of the model outer box in the length direction, a cross beam connected with the upright posts on the two sides of the model outer box is arranged above the model outer box, and a vertical jack capable of acting on the upper part of a test soil body of the model inner box is arranged on the cross beam; the inner wall of each layer of model outer box frame is vertically provided with a plurality of horizontal jacks which are horizontally placed and can act on the outer side wall of the corresponding frame of the model inner box, a displacement sensor, a strain gage, an acceleration sensor and a calibration speckle are embedded in the soil body of each layer of model inner box frame for analyzing the stress field and the displacement field change of the soil body, and the soil body destruction form is observed.
2. The structural model observation device for simulating the tunnel vibration test in the soft soil area according to claim 1, characterized in that: the long-edge inner side of each layer of model inner box frame is provided with a slide rail, and the two ends of the short edge of each layer of model inner box frame are in sliding fit with the slide rails so as to realize that the short edge of each layer of model inner box frame moves along the long edge.
3. The structural model observation device for simulating the tunnel vibration test in the soft soil area according to claim 1, characterized in that: outer container bearings located between two adjacent layers of outer container frames of the models are arranged on the vertical columns at intervals in the height direction and used for enabling each layer of outer container frames of the models to horizontally move along the length direction of the outer container frames.
4. The observation device of the structural model for simulating the tunnel vibration test in the soft soil area according to claim 1 or 3, wherein: and a plurality of inner box bearings are respectively arranged between the long edges of the inner box frames of the two adjacent layers of models so as to ensure the horizontal movement of the inner box frames of the models in the length direction.
5. The structural model observation device for simulating the tunnel vibration test in the soft soil area according to claim 1, characterized in that: and a rubber lining is clamped between the two adjacent layers of model inner box frames to prevent the test soil body of the model inner box from leaking.
6. The structural model observation device for simulating the tunnel vibration test in the soft soil area according to claim 1, characterized in that: each layer of framework of the model outer box and the model inner box is formed by embedding a rectangular aluminum alloy framework and toughened glass, and the toughened glass is located on the long side face of the model outer box.
7. The structural model observation device for simulating the tunnel vibration test in the soft soil area according to claim 1, characterized in that: the model outer box and the model inner box are the same in height.
8. The structural model observation device for simulating the tunnel vibration test in the soft soil area according to claim 1, characterized in that: and a certain distance is reserved between the outer box frames of the two adjacent layers of models.
9. The structural model observation device for simulating the tunnel vibration test in the soft soil area according to claim 1, characterized in that: the tail end of the ejector rod of the vertical jack is connected with a steel plate, and the lower end face of the steel plate is in contact with the upper portion of a test soil body in the model inner box.
10. The structural model observation device for simulating the tunnel vibration test in the soft soil area according to claim 1, characterized in that: the lower part of the upright post is fixed on the upper end surface of the vibration test bed; the bottommost layer frame of the model outer box is fixed on the upper end face of the vibration test bed; and the bottommost layer frame of the model inner box is fixed on the upper end surface of the vibration test bed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022669241.9U CN213812792U (en) | 2020-11-18 | 2020-11-18 | Structure model observation device for simulating tunnel vibration test in soft soil area |
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| CN202022669241.9U CN213812792U (en) | 2020-11-18 | 2020-11-18 | Structure model observation device for simulating tunnel vibration test in soft soil area |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114088812A (en) * | 2021-11-18 | 2022-02-25 | 中铁电气化局集团有限公司 | Method for evaluating vibration of surrounding soil body in shield tunnel construction |
| CN115127758A (en) * | 2022-06-24 | 2022-09-30 | 山东大学 | Test device and method capable of simultaneously simulating tunnel earthquake and dislocation action |
-
2020
- 2020-11-18 CN CN202022669241.9U patent/CN213812792U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114088812A (en) * | 2021-11-18 | 2022-02-25 | 中铁电气化局集团有限公司 | Method for evaluating vibration of surrounding soil body in shield tunnel construction |
| CN114088812B (en) * | 2021-11-18 | 2024-05-28 | 中铁电气化局集团有限公司 | Surrounding soil vibration evaluation method for shield tunnel construction |
| CN115127758A (en) * | 2022-06-24 | 2022-09-30 | 山东大学 | Test device and method capable of simultaneously simulating tunnel earthquake and dislocation action |
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