CN110568157A - Flexible test platform for indoor model test - Google Patents
Flexible test platform for indoor model test Download PDFInfo
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- CN110568157A CN110568157A CN201910879819.2A CN201910879819A CN110568157A CN 110568157 A CN110568157 A CN 110568157A CN 201910879819 A CN201910879819 A CN 201910879819A CN 110568157 A CN110568157 A CN 110568157A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
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- E02D33/00—Testing foundations or foundation structures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The invention provides an indoor model test flexible test platform which comprises a test platform and a control host, wherein the test platform comprises a plurality of regularly arranged platform foundation units; the platform foundation units comprise platform unit slices, unit slice angle adjusting devices, unit slice lifting devices and control units, and the platform unit slices of each platform foundation unit are compactly matched to form a test platform layer; the unit piece angle adjusting device is of a spherical structure, and the top surface of the unit piece angle adjusting device is fixedly connected with the platform unit piece; the unit piece lifting device is connected with the unit piece angle adjusting device; the control unit is connected with the unit piece angle adjusting device, the unit piece lifting device and the control host machine and used for receiving coordinate instructions of the control host machine so as to enable the platform unit pieces to present different overall shapes. The method not only realizes the rapid modeling of the soil-rock interface terrain, but also can more simply, conveniently and accurately simulate the influence of engineering measures such as underground excavation and the like, active fault motion and the like on surface buildings.
Description
Technical Field
The invention belongs to the technical field of test platforms, and particularly relates to a flexible test platform for an indoor model test.
Background
At present, a rigid test platform is mostly adopted to carry out physical simulation tests under different geological conditions. For example, the simulation method for engineering excavation under different bedrock conditions is to simulate the bedrock conditions of the region by stacking and reinforcing the conglomerate materials according to the landform and the landform of the research region on an integral rigid experiment platform, cover the corresponding soil layer, and perform subsequent excavation simulation on the basis. For the excavation process, bedrock excavation simulation needs to be realized on the test platform model through side wall excavation, molten salt erosion, robots and the like.
the traditional rigidity test platform has the following defects for the engineering excavation simulation under different bedrock conditions:
1) In engineering problems, the bedrock is composed of one or more kinds of sedimentary rock, metamorphic rock and magma rock, has certain integrity, and is used as a hard rock layer in the surface layer of the land with higher strength. In a traditional rigid test platform, the accumulation and reinforcement of gravels are often adopted for carrying out bedrock simulation, and the high strength and integrity characteristics of bedrock under the actual working condition cannot be simulated.
2) The terrain of the bedrock and soil body interface is difficult to construct under a rigid test platform and cannot be automatically controlled, so that the terrain is assumed to be a plane and has a certain difference from the actual terrain.
3) For the excavation process, the traditional rigid experimental platform adopts methods such as side wall excavation, molten salt erosion and robots to simulate excavation, the operation is complex and tedious, the artificial damage to the peripheral terrain is easily caused, the method is not consistent with the actual excavation process, and the excavation state of the actual engineering cannot be accurately simulated.
Disclosure of Invention
The invention aims to provide an indoor model test flexible test platform to solve the problem that a traditional rigid test platform cannot accurately simulate an engineering excavation process under different bedrock conditions.
The invention provides an indoor model test flexible test platform which comprises a test platform and a control host, wherein the test platform comprises a platform base and a plurality of regularly arranged platform foundation units arranged on the platform base;
The platform foundation units comprise platform unit slices, unit slice angle adjusting devices, unit slice lifting devices and control units, and the platform unit slices of the platform foundation units are compactly matched to form a test platform layer;
The unit piece angle adjusting device is of a spherical structure, the top surface of the unit piece angle adjusting device is fixedly connected with the platform unit piece, and the unit piece angle adjusting device is used for adjusting the inclination angle of the platform unit piece in any direction through rotation;
The unit piece lifting device is connected with the unit piece angle adjusting device and used for executing the lifting action of the platform unit piece;
The control unit is connected with the unit piece angle adjusting device, the unit piece lifting device and the control host machine and used for receiving coordinate instructions of the control host machine and controlling the unit piece angle adjusting device and the unit piece lifting device to execute corresponding actions so that the platform unit piece combination presents different overall shapes and is used for establishing physical models under different geological conditions and simulating engineering measures or fault motion.
furthermore, the flexible test platform also comprises an elevation positioning rod marked with scales and a laser elevation positioner sleeved on the elevation positioning rod and capable of moving along the elevation positioning rod, wherein the laser elevation positioner is connected with the control host and used for measuring the height of each platform foundation unit in a simulation area in real time in the simulation process and transmitting the measurement data to the control host to obtain model parameters; the model parameters comprise deformation conditions of the periphery of the simulation area.
Furthermore, the unit piece angle adjusting device and the unit piece lifting device are respectively provided with an angle displacement sensor and a linear displacement sensor, and the angle displacement sensor and the linear displacement sensor are connected with the control unit and used for providing displacement information of the platform base unit for the control unit.
Further, the platform base is of a rigid structure, positioning plates are arranged at four corners of the platform base, and a plurality of mounting holes used for being fixedly mounted with the platform base are formed in the positioning plates.
Furthermore, the control unit is electrically connected with the control host through a signal adapter plate.
further, the unit piece lifting device is a hydraulic lifting device.
further, the platform unit piece is made of rigid metal sheets.
compared with the prior art, the invention has the beneficial effects that:
The method not only realizes the rapid modeling of the soil-rock interface terrain, but also can more simply, conveniently and accurately simulate the influence of engineering measures (such as excavation process), active fault motion and the like on surface buildings, and monitor the simulated terrain in real time, thereby providing powerful basis for subsequent calculation and analysis.
drawings
FIG. 1 is a schematic structural diagram of an indoor model test flexible test platform according to the present invention;
FIG. 2 is a top view of an indoor model test flexible test platform of the present invention.
FIG. 3 is a schematic diagram of a platform base unit according to the present invention;
FIG. 4 is a schematic diagram of an example of development and application under bedrock conditions according to the present invention.
Reference numbers in the figures:
1-a platform base; 2, positioning a plate; 3-control the host computer; 4-elevation positioning rod; 5-laser elevation locator; 6-test platform layer; 7-a platform base unit; 71-platform die; 72-die angle adjustment means; 73-a die lifting device; 74-a control unit; 8-signal transfer board.
Detailed Description
The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that functional, methodological, or structural equivalents or substitutions made by these embodiments are within the scope of the present invention.
referring to fig. 1 to 3, the present embodiment provides an indoor model test flexible test platform, including a test platform and a control host 3, where the test platform includes a platform base 1 and a plurality of platform base units 7 arranged on the platform base 1 in a regular arrangement, and the control host 3 is arranged on one side of the platform base 1; the number and arrangement of the platform base units 7 are not limited to the constraints in this embodiment, and can be set according to actual test requirements.
The platform base unit 7 comprises a platform unit piece 71, a unit piece angle adjusting device 72, a unit piece lifting device 73 and a control unit 4, and the platform unit pieces 71 of each platform base unit are compactly matched to form a test platform layer 6; the unit piece angle adjusting device 72 is of a spherical structure, the top surface of the unit piece angle adjusting device is fixedly connected with the platform unit piece 71, and the unit piece angle adjusting device is used for adjusting the inclination angle of the platform unit piece 71 in any direction through rotation;
The unit piece lifting device 73 is connected with the unit piece angle adjusting device 72 and used for executing the lifting action of the platform unit piece 71;
The control unit 74 is connected to the cell angle adjusting device 72, the cell elevating device 73 and the control mainframe 3, and is configured to receive a coordinate command from the control mainframe 3, and control the cell angle adjusting device 72 and the cell elevating device 73 to perform corresponding actions, so that the platform cell 71 exhibits different overall shapes (different bedrock conditions under simulation of corresponding engineering problems) to establish physical models under different geological conditions, simulate engineering measures, fault motions, and the like.
Through the indoor model test flexible test platform, not only is the rapid modeling of the soil-rock interface terrain realized, but also the influences of engineering measures (such as an excavation process), active fault motion and the like on earth surface buildings can be simulated more simply, conveniently and accurately, the simulated terrain can be monitored in real time, and powerful basis is provided for subsequent calculation and analysis.
In this embodiment, the flexible test platform further comprises an elevation positioning rod 4 (arranged on one side of the platform base) marked with scales and a laser elevation positioner 5 which is sleeved on the elevation positioning rod 4 and can move (freely rotate or move up and down) along the elevation positioning rod 4, wherein the laser elevation positioner 5 is connected with the control host 3 and is used for measuring the height of each platform base unit 7 in a simulation area in real time in the simulation process and transmitting the measurement data to the control host 7 so as to calculate the model proportion and obtain the model parameters; the model parameters include deformation conditions around the simulation region.
In this embodiment, the unit chip angle adjusting device 72 and the unit chip lifting device 73 are respectively provided with an angle displacement sensor and a linear displacement sensor, and the angle displacement sensor and the linear displacement sensor are connected to the control unit 74 for providing the control unit with displacement information of the platform base unit 7.
In this embodiment, platform base 1 is the rigid structure, and its four corners all is equipped with locating plate 2, is equipped with a plurality of mounting holes that are used for with 1 fixed mounting of platform base on locating plate 2.
In the present embodiment, the control unit 74 is electrically connected to the control host 3 through the signal transfer board 8. The signal transfer board 8 is fixedly connected with the platform base 1.
In the present embodiment, the die lifting device 73 is a hydraulic lifting device.
in this embodiment, the platform unit piece 71 may be made of a rigid metal sheet, and is welded to the spherical unit piece angle adjusting device 72 for simulating the topography and the shape of the bedrock surface.
Referring to fig. 4, the flexible test platform is used for carrying out test simulation research on engineering excavation under bedrock conditions of a certain area.
The platform base 1 is installed at the open space of an indoor laboratory through the positioning plate 2, a certain number of platform foundation units 7 are regularly arranged according to the precision requirement of the engineering simulation research, and the indoor flexible test platform is installed according to the structure.
The distribution shape of the terrain bedrock in the simulated area is collected, a corresponding model is established in the control host 3, and different platform base units 7 are controlled to ascend (or descend) to a certain height according to coordinates, so that the platform unit pieces 71 rotate by a certain angle, and finally the bedrock distribution shape consistent with the simulated area in the figure 4 is formed.
Simulating the actual geological conditions of the research area, covering a layer of rough surface plastic film above the simulated bedrock in the figure 4, adding a soil layer above the test platform according to the soil layer conditions of the research area, and finally completing the simulation of the equal proportion terrain geological conditions of the research area.
According to the design of actual engineering, the area A in the graph 4 is excavated, the platform base unit 7 of the area A is controlled through the control host 3, so that the platform base unit 7 at the position is descended by a certain height to form a mined-out area with a certain volume, and the actual excavation effect is simulated.
In the simulation process, the height deformation and the like of the area A and the surrounding covering soil are measured and fed back in real time through the laser elevation positioner 5, the deformation condition of the surrounding area in the simulation excavation process is recorded, and a basis is provided for subsequent analysis.
it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (7)
1. the flexible test platform for the indoor model test is characterized by comprising a test platform and a control host, wherein the test platform comprises a platform base and a plurality of regularly arranged platform foundation units arranged on the platform base;
The platform foundation units comprise platform unit slices, unit slice angle adjusting devices, unit slice lifting devices and control units, and the platform unit slices of the platform foundation units are compactly matched to form a test platform layer;
The unit piece angle adjusting device is of a spherical structure, the top surface of the unit piece angle adjusting device is fixedly connected with the platform unit piece, and the unit piece angle adjusting device is used for adjusting the inclination angle of the platform unit piece in any direction through rotation;
the unit piece lifting device is connected with the unit piece angle adjusting device and used for executing the lifting action of the platform unit piece;
The control unit is connected with the unit piece angle adjusting device, the unit piece lifting device and the control host machine and used for receiving a coordinate instruction of the control host machine and controlling the unit piece angle adjusting device and the unit piece lifting device to execute corresponding actions so that the platform unit piece combination presents different overall shapes and is used for establishing physical models under different geological conditions and simulating engineering measures or active fault motion; the engineering measures comprise bedrock excavation.
2. the indoor model test flexible test platform according to claim 1, further comprising an elevation positioning rod marked with scales and a laser elevation positioner sleeved on the elevation positioning rod and capable of moving along the elevation positioning rod, wherein the laser elevation positioner is connected with the control host computer and used for measuring the height of each platform base unit in a simulation area in real time in a simulation process and transmitting measurement data to the control host computer to obtain model parameters; the model parameters comprise deformation conditions of the periphery of the simulation area.
3. The indoor model test flexible test platform of claim 1, wherein the unit piece angle adjusting device and the unit piece lifting device are respectively provided with an angle displacement sensor and a linear displacement sensor, and the angle displacement sensor and the linear displacement sensor are connected with the control unit and used for providing displacement information of the platform base unit for the control unit.
4. The flexible test platform for indoor model tests, according to claim 1, wherein the platform base is a rigid structure, and positioning plates are disposed at four corners of the platform base, and a plurality of mounting holes are disposed on the positioning plates for fixedly mounting with the platform base.
5. The flexible test platform for indoor model tests as claimed in claim 1, wherein the control unit is electrically connected with the control host through a signal adapter plate.
6. The indoor model test flexible test platform of claim 1, wherein the unit piece lifting device is a hydraulic lifting device.
7. The indoor model test flexible test platform of claim 1, wherein the platform unit piece is a rigid metal piece.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910879819.2A CN110568157A (en) | 2019-09-18 | 2019-09-18 | Flexible test platform for indoor model test |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910879819.2A CN110568157A (en) | 2019-09-18 | 2019-09-18 | Flexible test platform for indoor model test |
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| CN110568157A true CN110568157A (en) | 2019-12-13 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111077282A (en) * | 2019-12-23 | 2020-04-28 | 中国矿业大学 | Surface soil physical and chemical property change simulation system based on mining influence |
| CN111710223A (en) * | 2020-06-03 | 2020-09-25 | 中国安全生产科学研究院 | Variable terrain frame device for simulating slope bedrock |
| CN112344906A (en) * | 2020-11-30 | 2021-02-09 | 山东大学 | Unstable-subsidence coal mining subsidence area ship pool settlement deformation model test device and method |
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| CN112344906A (en) * | 2020-11-30 | 2021-02-09 | 山东大学 | Unstable-subsidence coal mining subsidence area ship pool settlement deformation model test device and method |
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Application publication date: 20191213 |
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