CN201765075U - Measuring device capable of measuring partial stress state of shearing surface - Google Patents
Measuring device capable of measuring partial stress state of shearing surface Download PDFInfo
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- CN201765075U CN201765075U CN2010205233560U CN201020523356U CN201765075U CN 201765075 U CN201765075 U CN 201765075U CN 2010205233560 U CN2010205233560 U CN 2010205233560U CN 201020523356 U CN201020523356 U CN 201020523356U CN 201765075 U CN201765075 U CN 201765075U
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- stress state
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- shearing surface
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Abstract
The utility model provides a measuring device capable of measuring a partial stress state of a shearing surface, comprising an outer frame; a soleplate on the outer frame is provided with a plurality of two-dimensional sensors, wherein each of the two-dimensional sensors is provided with a stressed plate; a soft interlayer material is disposed between the stressed plate and an upper pressure plate; one side of the upper pressure plate is connected with a horizontal loading system; balls are installed between the upper pressure plate and a pressure bearing plate; and the pressure bearing plate is connected with a vertical loading system. Rubber sealing side are arranged out the soft interlayer material. The measuring device provides a plurality of force measuring unit surfaces to form a testing plane which can measure the partial stress state of different positions of one shearing surface, while the existing rock soil material only has one shearing test and one shearing sample, one test only obtains one total stress state of the shearing surface, and the partial street change of the shearing surface cannot be measured. The force measuring unit can be operated independently from the loading system, and the loading way may be more flexible.
Description
Technical field
The utility model relates to a kind of measurement mechanism that can measure shear surface local stress state, especially is fit to the variation of the stress state of each diverse location in the non-homogeneous weak intercalated layer shear history of analogue measurement.
Background technology
Weak intercalated layer is one of geologic structure that often runs in the rock mass structure, the especially anti-shearing mechanics characteristic of the mechanical characteristic of weak intercalated layer is bigger to the macromechanics properties influence of geotechnical structure, under some geologic condition, weak intercalated layer plays for the stability of rock mass structure has controlled effect.
Obtain the anti-shearing force mathematic(al) parameter of weak intercalated layer, must carry out shear test.The shear test of weak intercalated layer has dual mode usually: the one, and the original position shear test, another kind is indoor shear test.This dual mode all is with the related interlayer of weak intercalated layer sillar up and down, cuts into the coupon that can be placed in the shear box together.During test, up and down shear box is inserted in sample (original position shear test), or with the sample shear box (indoor shear test) of packing into, and guarantees that the weak intercalated layer face is on the surface of contact of shear box up and down.By the up and down relative changing of the relative positions of shear box, make coupon up and down sillar produce shearing motion along weak intercalated layer.
In the weak intercalated layer shear test recited above, a sample can only form a shear surface in shear history, obtain one group of mechanics parameter.And reality to be the material of weak intercalated layer form and thickness is not a homogeneous, the STRESS VARIATION of each local location and inconsistent in the shear history, if in the shear history of an inhomogeneous weak intercalated layer, can measure the STRESS VARIATION of the different local locations of shear surface, to seeking the principle mechanisms of weak intercalated layer shear failure, geologic hazard start-up courses such as research landslide, avalanche, the monitoring and warning level that improves burst fire-disaster all is extremely important.
Shear box loads shear sample in the dynamometric system stressed be loading system by shear box with Load Transfer to shear surface, and the output of all load of supposition loading system all has been delivered to shear surface, just can obtain stress value on the shear surface as long as measure the load output valve of loading system like this.The stress state of a shear surface mainly comprises the components of stress of normal direction and tangential both direction, in order to load dynamometry on this both direction, just must all arrange to load dynamometric system on both direction.
Realize measurement to the shear stress state of the different local locations of a shear surface, must abandon the shear box loading dynamometric system structure that existing rock-soil material shear test institute generally adopts, loading system is separated with dynamometric system, allow dynamometric system miniaturization, integrated, arrange a plurality of measurements forces (or dynamometry face) on the same shear surface to be implemented in.
Summary of the invention
In order to grasp the Changing Pattern of weak intercalated layer structural plane pockety local stress state in shear history, the utility model provides a kind of and is spliced into the dynamometry matrix by a plurality of dynamometry unit, fills the shear test that the weak intercalated layer material is simulated the weak intercalated layer structure and carried out the weak intercalated layer structure between the dynamometry face of dynamometry matrix and the top board.Use such pilot system can carry out the weak intercalated layer structure shear test of non-uniform Distribution and observe the variation of the stress state of the different local locations of shear surface.
The purpose of this utility model is achieved in that a kind of measurement mechanism that can measure shear surface local stress state, comprise housing, base plate in the housing is provided with a plurality of dimension sensors, on each dimension sensor stressed plate is installed, be provided with the sample interlayer between stressed plate and the top board, top board one side is connected with horizontal loading system, between top board and the bearing plate ball is installed, and bearing plate is connected with vertical load system.The weak intercalated layer material is provided with the rubber edge sealing outward.
The measurement mechanism that can measure shear surface local stress state that the utility model provides, form a test plane with a plurality of dynamometry cell surfaces, can measure the local stress state of the diverse location of a shear surface, and the shear test of existing rock-soil material all to be single test have only one shear sample, single test can only obtain the stress state of a total shear surface, and shear surface local stress change procedure can't be measured.This device dynamometry unit can be independent of the loading system operation, and load mode can be more flexible.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is that 2 D force sensor and stressed plate are assembled into dynamometry arrangements of cells figure.
Embodiment
The utility model structure as shown in Figure 1, comprise housing 11, base plate 3 in the housing 11 is provided with a plurality of dimension sensors 1, on each dimension sensor 1 stressed plate 2 is installed, be provided with sample interlayer 4 between stressed plate 2 and the top board 5, top board 5 one sides are connected with horizontal loading system 10, between top board 5 and the bearing plate 6 ball 7 are installed, and bearing plate 6 is connected with vertical load system 9.The sample interlayer 4 outer rubber edge sealing 8 that are provided with.
Principle of work of the present utility model is as follows: test unit comprises a plurality of dynamometry unit, and a base plate 3 and a top board 5 are formed.A dynamometry unit is made up of a 2 D force sensor 1 and a stressed plate 2,2 D force sensor 1 is connected with stressed plate 2, the installation direction of 2 D force sensor 1 should guarantee that a dynamometry direction of sensor is consistent with the normal orientation of stressed plate 2, another dynamometry direction of sensor is parallel with stressed plate 2 surfaces, and the shear direction unanimity of shear test.A plurality of dynamometry unit is with matrix or other arranged in form, and the bottom of the 2 D force sensor 1 in the dynamometry unit all is connected on the base plate 3, and guarantees that the stressed plate 2 of dynamometry unit is spliced into a complete test plane.With thin layer of weak intercalated layer material, cover top board 5 on the thin layer above the test plane, top board 5 is the do wrong shear history of dynamic simulated geologic structure face of test planes relatively.In shear history, the dynamometry plane can be measured the shearing force and the normal pressure of each local location of whole shear surface simultaneously.
The course of work of the present utility model is as follows: at first 2 D force sensor 1 and stressed plate 2 are assembled into a dynamometry unit, a plurality of unit are installed on the base plate 3 according to the mode of accompanying drawing 2, form the dynamometry cell matrix, sealing is filled with butter in the slit between each dynamometry unit stressed plate.Sample interlayer 4 is by 8 sealings of rubber edge sealing.
Dynamometry plane with the dynamometry matrix is the bottom surface, weak intercalated layer material 4 is filled out in the shop in the above, the material of weak intercalated layer material is formed can different distributions, cover pressing plate 5 more in the above, place ball 7 and bearing plate 6 on the top board, vertical load system 9 is loaded into the normal direction load on the shear surface by bearing plate, and 10 of horizontal loading systems are loaded into top board with horizontal loading, and carries out shear test.
Claims (2)
1. the measurement mechanism that can measure shear surface local stress state, comprise housing (11), it is characterized in that: the base plate (3) in the housing (10) is provided with a plurality of dimension sensors (1), stressed plate (2) is installed on each dimension sensor (1), be provided with sample interlayer (4) between stressed plate (2) and the top board (5), top board (5) one sides are connected with horizontal loading system (10), between top board (5) and the bearing plate (6) ball (7) is installed, bearing plate (6) is connected with vertical load system (9).
2. the measurement mechanism that can measure shear surface local stress state according to claim 1 is characterized in that: the outer rubber edge sealing (8) that is provided with of sample interlayer (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205233560U CN201765075U (en) | 2010-09-09 | 2010-09-09 | Measuring device capable of measuring partial stress state of shearing surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205233560U CN201765075U (en) | 2010-09-09 | 2010-09-09 | Measuring device capable of measuring partial stress state of shearing surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201765075U true CN201765075U (en) | 2011-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205233560U Expired - Lifetime CN201765075U (en) | 2010-09-09 | 2010-09-09 | Measuring device capable of measuring partial stress state of shearing surface |
Country Status (1)
| Country | Link |
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| CN (1) | CN201765075U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435510A (en) * | 2011-12-12 | 2012-05-02 | 四川大学 | Assembled variable dimension direct shearing compression apparatus |
| CN109520793A (en) * | 2018-10-16 | 2019-03-26 | 浙江科技学院 | A kind of adjustable weak intercalated layer production method of the thickness of existing protolith structural plane |
| CN110044731A (en) * | 2019-04-29 | 2019-07-23 | 中南大学 | Non- uniformly distributed Normal stress joint straight shear test method and secondary load device |
-
2010
- 2010-09-09 CN CN2010205233560U patent/CN201765075U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435510A (en) * | 2011-12-12 | 2012-05-02 | 四川大学 | Assembled variable dimension direct shearing compression apparatus |
| CN102435510B (en) * | 2011-12-12 | 2013-06-12 | 四川大学 | Assembled variable dimension direct shearing compression apparatus |
| CN109520793A (en) * | 2018-10-16 | 2019-03-26 | 浙江科技学院 | A kind of adjustable weak intercalated layer production method of the thickness of existing protolith structural plane |
| CN109520793B (en) * | 2018-10-16 | 2021-02-26 | 浙江科技学院 | Method for manufacturing thickness-adjustable weak interlayer of existing original rock structural surface |
| CN110044731A (en) * | 2019-04-29 | 2019-07-23 | 中南大学 | Non- uniformly distributed Normal stress joint straight shear test method and secondary load device |
| CN110044731B (en) * | 2019-04-29 | 2021-12-07 | 中南大学 | Non-uniform normal load structural surface direct shear test method and auxiliary loading device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110316 |
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| CX01 | Expiry of patent term |