CN204044002U - Visual geotechnological staight scissors cutting apparatus - Google Patents
Visual geotechnological staight scissors cutting apparatus Download PDFInfo
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- CN204044002U CN204044002U CN201420199287.0U CN201420199287U CN204044002U CN 204044002 U CN204044002 U CN 204044002U CN 201420199287 U CN201420199287 U CN 201420199287U CN 204044002 U CN204044002 U CN 204044002U
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- shear
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Abstract
The utility model relates to the technical field of geotechnological staight scissors cutting apparatus, and disclose visual geotechnological staight scissors cutting apparatus, staight scissors cutting apparatus comprises the shear box and load maintainer with inner chamber; Described shear box comprises shear box and down cut box, and load maintainer comprises the vertical load maintainer for applying vertical acting force to the unsaturation soil body, and applies the horizontal addload mechanism of direction opposite horizontal acting force; Transparent sidewall is labeled with control area, is provided with camera outside shear box; The sidewall of shear box is provided with suction port, is inserted with the Observation of The Suction sensor for monitoring the change of unsaturation soil body suction in suction port.At straight shear history, obtain the shearing strength of the unsaturation soil body, by camera and transparent sidewall, obtain the change in displacement of the unsaturation soil body in control area, by Observation of The Suction sensor, obtain the suction change of the unsaturation soil body, realize the measurement to unsaturation soil body macroscopic view and Micro Mechanical Properties, its structure is simple, and it is also convenient to operate.
Description
Technical field
The utility model relates to the technical field of geotechnological staight scissors cutting apparatus, particularly relates to visual geotechnological staight scissors cutting apparatus.
Background technology
The failure mode of the soil body mainly causes due to shear failure, and therefore the shear strength parameters of the Accurate Determining soil body is significant in Geotechnical Engineering.
In prior art, the shear strength parameter of the soil body is measured in testing laboratory, general employing direct shear apparatus carries out shear test, under pressure at right angle, apply horizontal force to the soil body to shear, in the hope of shear stress during damage of soil body, then according to shear strength parameter, the parameter such as angle of internal friction and cohesiveness of the Coulomb law determination soil body.
But in nature and Practical Project, the soil body run into is the unsaturation soil body normally, the theoretical research of the shearing strength of the unsaturation soil body also has the history of nearly over half a century.For saturated clays, soil strength controls by effective stress, and concerning the unsaturation soil body, putative matric suction the unsaturation soil body 2 is out of shape and the contribution of shearing strength very large, the shearing strength that matric suction produces has a great impact for the stability of the unsaturation soil body, therefore, studies the matric suction change which kind of factor affects the unsaturation soil body, and the change of unsaturation soil body suction in shear history, there is very important meaning.
The mechanical property that natural rock-filled particulate material has dilatancy, presses rigid and anisotropy etc. special, and these mechanical properties are all controlled by microtexture and the evolution thereof of inside soil body, therefore, quantize soil body macroscopic view and micro-parameter, for furtheing investigate, soil deformation is machine-processed and mechanical characteristic is particularly important.But, now, the conventional straight shear test in laboratory can only measure the shear strength parameter of the soil body, namely angle of internal friction and cohesiveness, it can not the change of Real-Time Monitoring shear history matric suction, intuitively can not measure the displacement of the soil body near shear zone, that is, current straight shear test can not carry out the combined measurement of both macro and micro mechanical property simultaneously to the unsaturation soil body.
Utility model content
The purpose of this utility model is to provide visual geotechnological staight scissors cutting apparatus, is intended to solve straight shear test of the prior art can not carry out the combined measurement of macroscopic view and Micro Mechanical Properties simultaneously problem to the unsaturation soil body.
The utility model is achieved in that visual geotechnological staight scissors cutting apparatus, for carrying out straight shear test to the unsaturation soil body, comprises the shear box and load maintainer with inner chamber;
Described shear box comprises respectively in the upper shear box of hollow form and down cut box, and described upper shear box is stacked on described down cut box, forms described inner chamber between both inside;
Described load maintainer comprises the vertical load maintainer for applying vertical acting force to the unsaturation soil body in described inner chamber, and applies the horizontal addload mechanism of direction opposite horizontal acting force to respectively described upper shear box and down cut box;
One sidewall of described upper shear box and/or down cut box adopts transparent material to make, form transparent sidewall, described transparent sidewall is labeled with control area, and described shear box peripheral hardware has the camera for taking the unsaturated soil change in displacement corresponding with described control area;
The sidewall of described shear box is provided with suction port, is inserted with the Observation of The Suction sensor for monitoring the unsaturation soil body suction change in described inner chamber in described suction port.
Further, the lower surface of described upper shear box and the upper surface of down cut box are folded in opposite directions establishes layout, and it is coated with lubricating layer respectively.
Further, described vertical load maintainer comprises to be located at above described upper shear box and load plate for suppressing the unsaturation soil body in described shear box, and is connected to described load plate and applies the vertical force-applying piece of vertical acting force.
Further, the lower surface of described load plate is plane, and its upper surface is taper surface, and described vertical force-applying piece is connected to the summit place of described taper surface.
Further, described horizontal addload mechanism comprises the rigidity top that is connected to described upper shear box sidewall and is connected to described down cut box sidewall and horizontal force-applying piece for applying horizontal applied force, and described rigidity top is positioned opposite with horizontal force-applying piece.
Further, the joint of described upper shear box and down cut box forms shear zone region, and described suction port is provided with multiple, and multiple described suction port is located at the both sides up and down of described upper shear box and/or down cut box sidewall respectively.
Further, described down cut box is placed on slide plate, and the bottom of described slide plate is provided with multiple roller.
Compared with prior art, utilize the staight scissors cutting apparatus in the utility model, staight scissors can be carried out to the unsaturation soil body be placed in shear box to cut, and in straight shear history, the shearing strength of the unsaturation soil body can be obtained, by the transparent sidewall of camera and shear box, the change in displacement of the unsaturation soil body in control area can be observed, by Observation of The Suction sensor, then can obtain the suction change of the unsaturation soil body in straight shear history, like this, this staight scissors cutting apparatus, the measurement to unsaturation soil body macroscopic view and Micro Mechanical Properties can be realized, its structure is simple, it is also convenient to operate.
Accompanying drawing explanation
Fig. 1 is the cut-away illustration of the visual geotechnological staight scissors cutting apparatus that the utility model embodiment provides;
Fig. 2 is the sectional perspective schematic diagram of the visual geotechnological staight scissors cutting apparatus that the utility model embodiment provides.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Below in conjunction with specific embodiment, realization of the present utility model is described in detail.
As shown in Fig. 1 ~ 2, it is the preferred embodiment that the utility model provides.
The visual geotechnological staight scissors cutting apparatus 1 that the present embodiment provides, for measuring the suction of the unsaturation soil body 2 in straight shear history and displacement, it comprises the shear box 11 with inner chamber, this shear box 11 comprises shear box 111 and down cut box 112, upper shear box 111 and down cut box 112 are respectively in hollow form, be provided with cavity in upper shear box 111, in down cut box 112, be provided with lower cavity; Upper shear box 111 activity is folded to be located on down cut box 112, and upper cavity is communicated with lower cavity, thus, one between upper cavity and lower cavity, both inside forms the cavity of above-mentioned shear box 11, and the junction between upper shear box 111 and down cut box 112 forms shear zone region 113.
When above-mentioned staight scissors cutting apparatus 1 needs to carry out straight shear test to the unsaturation soil body 2, treat that the unsaturation soil body 2 of straight shear test is filled in the inner chamber of whole shear box 11, and, moved by the dislocation between upper shear box 111 and down cut box 112, thus realize the straight shearing manipulation to the unsaturation soil body 2 in shear box 11.
Visual geotechnological staight scissors cutting apparatus 1 also comprises load maintainer, and this load maintainer comprises vertical load maintainer 12 and horizontal addload mechanism, and wherein, vertical load maintainer 12 loads vertical acting force for giving the unsaturation soil body 2 of device in shear box 11; Horizontal addload mechanism then acts on the horizontal applied force that on shear box 111 and down cut box 112, direction is contrary respectively, moves, thus realize cutting the unsaturation soil body 2 staight scissors in shear box 11 to make to misplace between upper shear box 111 and down cut box 112.
Certainly, in the process that the unsaturation soil body 2 is cut by staight scissors, there is relative dislocation and move in the cross section being in the unsaturation soil body 2 of shear zone.
One side of above-mentioned upper shear box 111 and/or down cut box 112 adopts transparent material to make, form transparent sidewall 1121, control area 1123 is labeled with in this transparent side surfaces, and camera is provided with outside shear box 11, it is for carrying out data acquisition to the displacement of the unsaturation soil body 2 corresponding with this control area 1123.
Suction port 1122 is provided with in the sidewall of above-mentioned shear box 11, Observation of The Suction sensor is inserted with in this suction port 1122, when in the process that the unsaturation soil body 2 is cut at staight scissors, this Observation of The Suction sensor can measure the suction of the unsaturation soil body 2 being in this suction port 1122 place.
When staight scissors cutting apparatus 1 is carrying out in the process that staight scissors cut to placing the unsaturation soil body 2 within it, the horizontal applied force that level record mechanism applies can directly obtain, and then obtain the shear strength parameter of the unsaturation soil body 2, namely the macro-mechanical property of the unsaturation soil body 2 measures; Simultaneously, by transparent sidewall 1121 and the camera of setting on shear box 11, the unsaturation soil body 2 can be observed directly in straight shear history, the change in displacement of the soil body, and be converted into data processing, in addition, utilize Observation of The Suction sensor, then can measure the suction change in the unsaturation soil body 2, the namely measurement of the Micro Mechanical Properties of the real unsaturation soil body 2; Like this, the staight scissors cutting apparatus 1 that the present embodiment provides, can realize the macroscopic view of the unsaturation soil body 2 and the measurement of Micro Mechanical Properties simultaneously, and by transparent sidewall 1121, realizes visualized operation, and its structure is simple, operates also easy.
Particularly, above-mentioned upper shear box 111 and down cut box 112 are square ring-type, certainly, according to actual needs, and also can be set to other different in nature shapes, be not limited to the shape in the present embodiment.
When upper shear box 111 and down cut box 112 are folded be in opposite directions located at together with time, the lower surface of upper shear box 111 fold be located at down cut box 112 upper surface on, like this, move comparatively level and smooth for the ease of relative dislocation between upper shear box 111 and down cut box 112, the lower surface of upper shear box 111 and the upper surface of down cut box 112 are coated with lubricating layer respectively, by the lubrication of this lubricating layer, after avoiding both directly to superpose, and the size of friction force directly affects the size of horizontal applied force, thus the shearing strength affecting the unsaturation soil body 2 measures.
In the early-stage preparations of test, upper shear box 111 is folded to be located on down cut box 112, and toward the lumen loading unsaturation soil body 2 in shear box 11, in this process, in order to ensure to misplace between upper shear box 111 and down cut box 112, in the present embodiment, dismountable fixed mechanism is provided with between upper shear box 111 and down cut box 112, utilize this fixed mechanism, can be relative fixing with between down cut box 112 by upper shear box 111, certainly, when needs are by when occurring between upper shear box 111 and down cut box 112 to misplace mobile, directly this fixed mechanism can be removed, it is departed from the restriction between upper shear box 111 and down cut box 112.
Particularly, above-mentioned fixed mechanism comprises the jack 17 be arranged on down cut box 112 upper surface, run through through hole in shear box 111 sidewall and latch, this through hole aligns with jack 17 and is communicated with, latch plugs in through-holes, and wear in jack 17, thus by relative with down cut box 112 for upper shear box 111 fixing.
Certainly, as other embodiment, above-mentioned fixed mechanism can also be other structure, such as connect the snap fit etc. be arranged in outside shear box 11 shear zone region 113, the two ends of this snap fit are connected with down cut box 112 with upper shear box 111 respectively, thus realize upper being fixedly connected with between shear box 111 with down cut box 112.
In the present embodiment, vertical load maintainer 12 comprises and is arranged on load plate 121 above shear box 111 and vertical force-applying piece 123, this load plate 121 can directly be superimposed upon on the unsaturation soil body 2 in shear box 111, this vertical force-applying piece 123 is connected in load plate 121, it applies vertical acting force can to load plate 121, thus applies normal force to the unsaturation soil body 2 in shear box 11.
Vertical force-applying piece 123 is by being vertically extend layout, and it can be cylinder etc.
The vertical acting force applied to make vertical force-applying piece 123 can by load plate 121 comparatively average be distributed in the unsaturation soil body 2 everywhere, in the present embodiment, the lower surface of load plate 121 is plane, the tapered face 122 of its upper surface, and above-mentioned vertical force-applying piece 123 is connected to the summit place of load plate 121 taper surface 122, certainly, the summit of this taper surface 122 is also the central point of this load plate 121.
Horizontal addload mechanism comprises the rigidity top 114 being connected to shear box 111 sidewall, be connected to the horizontal force-applying piece 14 of down cut box 112 sidewall, and, rigidity top 114 is distributed in two of shear box 11 respectively with horizontal force-applying piece 14 and opposes sidewall, both are positioned opposite, like this, when horizontal force-applying piece 14 pairs of down cut box 112 time horizon acting forces, under the effect of rigidity top 114, upper shear box 111 keeps different, by moving horizontally of down cut box 112, thus the dislocation realized above between shear box 111 and down cut box 112 is moved, namely realize staight scissors to the unsaturation soil body 2 in shear box 11 to cut.
Particularly, horizontal force-applying piece 14 can be cylinder etc., also can be other all force piece that can apply horizontal applied force, specifically be determined by actual needs.
Above-mentioned rigidity top 114 is fixedly connected with between upper shear box 111, and rigidity comes directly towards 114 fixed and arranged, like this, then keeps upper shear box 111 to maintain static; Horizontal force-applying piece 14 is connected with load transducer 13, it may be used for the acting force of the horizontal force-applying piece 14 of measurement, like this, and the data obtained by this load transducer 13, and the shape of shear box 11 and size, then can conveniently obtain the parameters such as the shearing strength of the unsaturation soil body 2.
For the ease of down cut box 112 relative to the movement between upper shear box 111, in the present embodiment, shear box 11 is placed on sliding panel 16, namely the lower end of down cut box 112 is placed on sliding panel 16, the lower end of this sliding panel 16 is provided with multiple roller 17, and the plurality of roller 17 can directly be placed on test platform, like this, 112, down cut box is placed between shear box 111 and slide plate, thus is convenient to it and moves.
Displacement transducer 15 is provided with in the outside of above-mentioned slide plate, it can measure the displacement of slide plate 16, like this, by the measurement of this displacement transducer 15, indirectly can obtain down cut box 112 relative to the Mobile data between upper shear box 111, and then provide data for other parameter of the unsaturation soil body 2 calculates.
In the present embodiment, transparent sidewall 1121 can be all formed with at upper shear box 111 and down cut box 112, and, control area 1123 is indicated respectively on the transparent sidewall 1121 of upper shear box 111 and down cut box 112, certainly, also can one of them form transparent sidewall 1121 at upper shear box 111 or down cut box 112, concrete setting is determined by actual conditions.
And for Observation of The Suction aspect, in order to monitor the suction change of multiple positions of the unsaturation soil body 2 in shear box 11, in the present embodiment, multiple suction port 1122 is respectively arranged with in upper shear box 111 and down cut box 112, multiple suction port 1122 is separately positioned on the both sides up and down of shear box 111 or down cut box 112 sidewall, namely near the shear zone region 113 of shear box 11 and the shear zone region 113 of departing from shear box 11.
According to the above-mentioned visual geotechnological staight scissors cutting apparatus 1 provided, the present embodiment additionally provides visual geotechnological staight scissors blanking method, and it comprises the following steps:
1), be placed on down cut box 112 by upper shear box 111, upper shear box 111 forms the shear box 11 with inner chamber with down cut box 112;
2), toward layering in the inner chamber of shear box 11 place the unsaturation soil body 2, and adopt vertical load maintainer 12 pairs of unsaturation soil bodys 2 to apply vertical acting force, make the unsaturation soil body 2 stabilization by consolidation;
3), by Observation of The Suction sensor be plugged in the suction port 1122 of shear box 11 sidewall, and wait for the suction data balancing of Observation of The Suction sensor;
4) horizontal addload mechanism, is utilized to apply the contrary horizontal applied force in direction to upper shear box 111 and down cut box 112, thus between upper shear box 111 and down cut box 112, there is the movement that misplaces in the horizontal direction, there are staight scissors and cut in the unsaturation soil body 2 in shear box 11 inner chamber;
5), in the inner chamber of shear box 11, the unsaturation soil body 2 occurs in the process that staight scissors cut, camera is utilized to take the change in displacement of control area 1123 place's unsaturation soil body 2 on the transparent sidewall 1121 of shear box 11, the namely deformation process of the unsaturation soil body 2, and changed by the suction of the Observation of The Suction Sensor monitoring unsaturation soil body 2.
In above-mentioned visual geotechnological staight scissors blanking method, it is by applying the contrary horizontal applied force in direction to upper shear box 111 and down cut box 112, the dislocation that can realize between shear box 111 and down cut box 112 is moved, thus can obtain the shear strength parameter of the unsaturation soil body 2; Camera is utilized to take the unsaturation soil body 2 at control area 1123 place of transparent region, the change in displacement of the unsaturation soil body 2 can be observed intuitively, in addition, Observation of The Suction sensor then can monitor the suction change of the unsaturation soil body 2, and the macroscopic view simultaneously realized the unsaturation soil body 2 and Micro Mechanical Properties monitoring, and visual, structure is simple, and operation is also convenient.
Step 1 above-mentioned) in, upper shear box 111 is placed on down cut box 112 and goes forward, on the upper surface of the lower surface of upper shear box 111 and down cut box 112, lubricating layer can be coated with respectively.
Step 1 above-mentioned) and step 2) between, utilize dismountable fixed mechanism by fixing between upper shear box 111 and down cut box 112, horizontal addload mechanism to be utilized is to before upper shear box 111 horizontal applied force contrary with down cut box 112 time orientation, this fixed mechanism is removed, makes can to move by relative dislocation between shear box 111 and down cut box 112.
In the present embodiment, Observation of The Suction sensor, load transducer 13, displacement transducer and make a video recording first-class can directly connection with outside opertaing device, thus utilize this opertaing device to its data processing, storage etc., thus realize in whole straight shear history, the automatic business processing of data and the automatic operating of straight shearing manipulation.Certainly, also control element can be set separately, carry out data processing and storage etc. voluntarily separately, specifically determined by actual needs.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. visual geotechnological staight scissors cutting apparatus, is characterized in that, for carrying out straight shear test to the unsaturation soil body, comprises the shear box and load maintainer with inner chamber;
Described shear box comprises respectively in the upper shear box of hollow form and down cut box, and described upper shear box is stacked on described down cut box, forms described inner chamber between both inside;
Described load maintainer comprises the vertical load maintainer for applying vertical acting force to the unsaturation soil body in described inner chamber, and applies the horizontal addload mechanism of direction opposite horizontal acting force to respectively described upper shear box and down cut box;
One sidewall of described upper shear box and/or down cut box adopts transparent material to make, form transparent sidewall, described transparent sidewall is labeled with control area, and described shear box peripheral hardware has the camera for taking the unsaturated soil change in displacement corresponding with described control area;
The sidewall of described shear box is provided with suction port, is inserted with the Observation of The Suction sensor for monitoring the unsaturation soil body suction change in described inner chamber in described suction port;
Described vertical load maintainer comprises to be located at above described upper shear box and load plate for suppressing the unsaturation soil body in described shear box, and is connected to described load plate and applies the vertical force-applying piece of vertical acting force; The lower surface of described load plate is plane, and its upper surface is taper surface, and the summit of this taper surface is the central point of described load plate, and described vertical force-applying piece is connected to the summit place of described taper surface.
2. visual geotechnological staight scissors cutting apparatus as claimed in claim 1, is characterized in that, the lower surface of described upper shear box and the upper surface of down cut box are folded in opposite directions establishes layout, and it is coated with lubricating layer respectively.
3. visual geotechnological staight scissors cutting apparatus as claimed in claim 1 or 2, it is characterized in that, described horizontal addload mechanism comprises the rigidity top that is connected to described upper shear box sidewall and is connected to described down cut box sidewall and horizontal force-applying piece for applying horizontal applied force, and described rigidity top is positioned opposite with horizontal force-applying piece.
4. visual geotechnological staight scissors cutting apparatus as claimed in claim 1 or 2, it is characterized in that, the joint of described upper shear box and down cut box forms shear zone region, described suction port is provided with multiple, and multiple described suction port is located at the both sides up and down of described upper shear box and/or down cut box sidewall respectively.
5. visual geotechnological staight scissors cutting apparatus as claimed in claim 1 or 2, it is characterized in that, described down cut box is placed on slide plate, and the bottom of described slide plate is provided with multiple roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420199287.0U CN204044002U (en) | 2014-04-23 | 2014-04-23 | Visual geotechnological staight scissors cutting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420199287.0U CN204044002U (en) | 2014-04-23 | 2014-04-23 | Visual geotechnological staight scissors cutting apparatus |
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| CN204044002U true CN204044002U (en) | 2014-12-24 |
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| CN201420199287.0U Withdrawn - After Issue CN204044002U (en) | 2014-04-23 | 2014-04-23 | Visual geotechnological staight scissors cutting apparatus |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103969132A (en) * | 2014-04-23 | 2014-08-06 | 深圳市工勘岩土集团有限公司 | Visualized earthwork direct shearing device and method |
| CN105751390A (en) * | 2016-03-24 | 2016-07-13 | 中国科学院武汉岩土力学研究所 | Cutting device and geomaterial direct shear apparatus |
| CN111458238A (en) * | 2020-04-09 | 2020-07-28 | 中南林业科技大学 | Assembled rock-soil body slope in-situ direct shear test device and method |
| CN113804560A (en) * | 2021-07-30 | 2021-12-17 | 南华大学 | Unsaturated soil and structure interface shear visual test device and method |
-
2014
- 2014-04-23 CN CN201420199287.0U patent/CN204044002U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103969132A (en) * | 2014-04-23 | 2014-08-06 | 深圳市工勘岩土集团有限公司 | Visualized earthwork direct shearing device and method |
| CN105751390A (en) * | 2016-03-24 | 2016-07-13 | 中国科学院武汉岩土力学研究所 | Cutting device and geomaterial direct shear apparatus |
| CN111458238A (en) * | 2020-04-09 | 2020-07-28 | 中南林业科技大学 | Assembled rock-soil body slope in-situ direct shear test device and method |
| CN111458238B (en) * | 2020-04-09 | 2023-06-09 | 中南林业科技大学 | Assembled rock-soil body slope in-situ direct shear test device and method |
| CN113804560A (en) * | 2021-07-30 | 2021-12-17 | 南华大学 | Unsaturated soil and structure interface shear visual test device and method |
| CN113804560B (en) * | 2021-07-30 | 2023-09-26 | 南华大学 | Unsaturated soil and structure interface shear visualization test device and method |
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