CN206189375U - A geotechnological check room for geotechnical centrifugal model test - Google Patents
A geotechnological check room for geotechnical centrifugal model test Download PDFInfo
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- CN206189375U CN206189375U CN201621221604.XU CN201621221604U CN206189375U CN 206189375 U CN206189375 U CN 206189375U CN 201621221604 U CN201621221604 U CN 201621221604U CN 206189375 U CN206189375 U CN 206189375U
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- Prior art keywords
- geotechnical
- model test
- geotechnological
- centrifugal model
- sheet
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Abstract
The utility model relates to a geotechnical centrifugal model test technical field, in particular to a geotechnological check room for geotechnical centrifugal model test, including many sheets, follow 30~50mm of sheet length direction every between two sheets and set up a tie point, form check room group, to follow 30~50mm of sheet length direction every between the group of two adjacent check rooms and set up a tie point, the tie point between the group of two check rooms lies in the intermediate position of two adjacent tie points between two sheets of inter block of check room respectively, the sheet width is 10~20mm, and sheet thickness is 0.03~0.15mm. The utility model discloses the geotechnique check rooms compares the geotechnological check room structure that adopts in actual geotechnological structures and is on size, specification and performance and is similar to the equal proportion setting, can be used to geotechnological centrifugal model's among the geotechnological centrifugal test structure to can simulate out the geotechnological engineering of reality well at the failure mechanisms and the change rule of centrifugal test in -process, but wide application in various geotechnical centrifugal model test has fine practical value.
Description
Technical field
The utility model is related to Geotechnical Centrifuge Model Test Technology field, more particularly to a kind of for geo- textile technique examination
The geotechnical grid tested.
Background technology
With the implementation of China's national strategy plan, the sustainable development of the development of the national economy, communal facility, infrastructure and
The engineering constructions such as means of transportation are surging forward, geotechnical grid as a kind of geosynthetics, be widely used in slope project,
The field of civil engineering such as subgrade engineering, barricade engineering.Geotechnical centrifugal model test reduce earthen structure size while,
The acceleration of gravity of model is increased, the stress state of soil in model can be kept consistent with actual conditions, therefore on simulation side
The aspects such as slope, Earth pressures have some superiority, are a kind of conventional research techniques in Geotechnical Engineering, using geotechnological centrifugal mold
Type experimental study geotechnical grid reinforcement structure, it is significant for disclosing its failure mechanism and deformation rule.According to《Highway
Engineering geosynthetics geotechnical grid》(JT/T 516-2004), geotechnical grid in Practical Project highly for 50mm~
300mm, welding distance is 340mm~800mm；But when geotechnical centrifugal model test is carried out, due to centrifugal model test mould
The size of molding box is limited, it is impossible to accommodate geotechnical grid prototype, then reduced scale must be carried out to actual geotechnical grid, but to ensure model
Mechanical property of the material with leiomyoma cells under certain centrifugal acceleration is similar.Therefore, research can be used for centrifugal model test
Geotechnical grid cast material, with great theory significance and practical value.
Utility model content
The purpose of this utility model is to provide a kind of geotechnical grid for geotechnical centrifugal model test, can be used for geotechnique
The structure of centrifugal model, can fully simulate the performance of geotechnical grid in actual earthen structure, and realization is broken to earthen structure
Bad mechanism and deformation rule are accurately simulated.
In order to solve the above technical problems, the utility model uses following technical scheme：
A kind of geotechnical grid for geotechnical centrifugal model test, including many plies, along sheet length between two sheet materials
Direction every 30~50mm set a tie point, formed a cell compartment group, between adjacent two cell compartments group along sheet length direction every
30~50mm sets a tie point, and the tie point between two cell compartment groups is located in cell compartment group adjacent two connection between two sheet materials respectively
The centre position of point；The sheet width is 10~20mm, and sheet thickness is 0.03~0.15mm.
In above-mentioned technical proposal, further, the sheet material is to use initial tensile modulus to be bent for 15~30kN/m, tension
Take the plastic sheeting that intensity is 0.5~1.5kN/m and cut into width identical strip.
In above-mentioned technical proposal, further, connected using welding manner at each tie point.
In above-mentioned technical proposal, further, each tie point use ultrasonic bonding, weld width be 0.8~
1mm。
In above-mentioned technical proposal, further, tensile strength is not less than 0.5KN/m at each tie point.
In above-mentioned technical proposal, further, the plastic sheeting is polyethylene film.
The utility model uses polyethylene film material cut growth bar shaped sheet material, is spaced between adjacent two sheet material certain
Distance uses ultrasonic bonding connection, forms the geotechnical grid structure of small dimension；The geotechnical grid is constructed compared to actual geotechnique
The geotechnical grid structure that thing is used is set in size, specification and performance in approximate equal proportion, so as to can be used for geotechnique
The structure of geo- textile technique in centrifugal test, and it is broken during centrifugal test well to simulate actual earthwork engineering
Bad mechanism and Changing Pattern, can be widely applied to various geotechnical centrifugal model tests, with good practical value.
Brief description of the drawings
Fig. 1 is the utility model structural front view.
Fig. 2 is the utility model geotechnical grid deployed condition dimensional structure diagram.
In figure：1st, sheet material, 2, cell compartment group, 3, tie point.
Specific embodiment
The utility model is further described below in conjunction with the accompanying drawings.
Such as Fig. 1, polyethylene film is used in the present embodiment as the raw material for preparing the geotechnical grid, specifically from thickness
It is 0.085mm to spend, and tensile yield strength is 0.912kN/m, and initial tensile modulus are the polyethylene film of 20.4kN/m；Here
Tensile yield strength produces stress during yield deformation for material under stretching action.Polyethylene film is cut out first some
The sheet material that bar length is 500mm, width is 10mm；Then two sheet materials are attached to be formed every 40mm using ultrasonic bonding
Multiple pads, two sheet materials constitute a cell compartment group by above-mentioned welding operation；Again by between each adjacent cell compartment group along sheet length
Direction is attached every 40mm using ultrasonic bonding, and the pad between cell compartment group is located in every group of cell compartment group respectively here
The centre position of adjacent two pad between two sheet materials, the weld width of above-mentioned each pad is 1mm, should ensure that each pad
Intensity, prevents from being destroyed at pad, and the tensile strength at pad is 0.5kN/m here；Spread out and formed such as
Geotechnical grid shown in Fig. 2.Can also be existing using bonding etc. in addition to being connected using welding manner between sheet material and cell compartment group
Conventional connected mode is attached.
By calculate analyze, the geotechnical grid in above-described embodiment, build geo- textile technique in its intensity and just
Degree performance is approximate with the geotechnical grid in actual earthwork engineering under the centrifugal acceleration of 40g~150g, can meet geotechnological centrifugation
The use requirement of model test.
Specification and drawings of the present utility model are considered as illustrative and not restrictive, are disclosed in the utility model
Technical scheme on the basis of, those skilled in the art is according to disclosed technology contents, it is not necessary to which performing creative labour is just
Some can be made to some of them technical characteristic to replace and deform, these are replaced and deform in protection model of the present utility model
In enclosing.
Claims (6)
1. a kind of geotechnical grid for geotechnical centrifugal model test, it is characterised in that：Including many plies, edge between two sheet materials
Sheet length direction sets a tie point every 30~50mm, a cell compartment group is formed, along sheet length between adjacent two cell compartments group
Direction sets a tie point every 30~50mm, and the tie point between two cell compartment groups is located in cell compartment group phase between two sheet materials respectively
The centre position of adjacent two tie points；The sheet width is 10~20mm, and sheet thickness is 0.03~0.15mm.
2. the geotechnical grid for geotechnical centrifugal model test according to claim 1, it is characterised in that：The sheet material is
Initial tensile modulus are used to cut into width phase for the plastic sheeting that 15~30kN/m, tensile yield strength are 0.5~1.5kN/m
Same strip.
3. the geotechnical grid for geotechnical centrifugal model test according to claim 1, it is characterised in that：Each connection
Connected using welding manner at point.
4. the geotechnical grid for geotechnical centrifugal model test according to claim 3, it is characterised in that：Each connection
Point uses ultrasonic bonding, and weld width is 0.8~1mm.
5. the geotechnical grid for geotechnical centrifugal model test according to claim 1, it is characterised in that：Each connection
Tensile strength is not less than 0.5kN/m at point.
6. the geotechnical grid for geotechnical centrifugal model test according to claim 2, it is characterised in that：The plastics are thin
Film is polyethylene film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621221604.XU CN206189375U (en) | 2016-11-14 | 2016-11-14 | A geotechnological check room for geotechnical centrifugal model test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621221604.XU CN206189375U (en) | 2016-11-14 | 2016-11-14 | A geotechnological check room for geotechnical centrifugal model test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206189375U true CN206189375U (en) | 2017-05-24 |
Family
ID=58734463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621221604.XU Expired - Fee Related CN206189375U (en) | 2016-11-14 | 2016-11-14 | A geotechnological check room for geotechnical centrifugal model test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206189375U (en) |
-
2016
- 2016-11-14 CN CN201621221604.XU patent/CN206189375U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170524 Termination date: 20171114 |