CN106404524A - Device and method for recognizing horizontal radial deformation of static triaxial test soil sample - Google Patents

Device and method for recognizing horizontal radial deformation of static triaxial test soil sample Download PDF

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Publication number
CN106404524A
CN106404524A CN201610770993.XA CN201610770993A CN106404524A CN 106404524 A CN106404524 A CN 106404524A CN 201610770993 A CN201610770993 A CN 201610770993A CN 106404524 A CN106404524 A CN 106404524A
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horizontal radial
sample
deformation
monitoring
radial deformation
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CN106404524B (en
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王秀艳
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Institute of Hydrogeology and Environmental Geology CAGS
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Institute of Hydrogeology and Environmental Geology CAGS
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02Details
    • G01N3/06Special adaptations of indicating or recording means
    • G01N3/068Special adaptations of indicating or recording means with optical indicating or recording means
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014Type of force applied
    • G01N2203/0016Tensile or compressive
    • G01N2203/0019Compressive

Abstract

The invention discloses a device and a method for recognizing horizontal radial deformation of a static triaxial test soil sample, and relates to the field of non-conventional test of geotechnical tests. The device comprises a processing module, wherein the processing module is connected with a sampling controller; the input end of the sampling controller is connected with a test sample horizontal radial deformation and destroying process monitoring device in a data way; the test sample horizontal radial deformation and destroying process monitoring device is arranged at the outer side of a static triaxial pressure chamber; a press rod is arranged at the center of the top end of the static triaxial pressure chamber; the circular arc-shaped side surface of the press rod is connected with a top casing of the static triaxial pressure chamber; the bottom surface of the press rod is connected with a test sample cap; the bottom surface of the test sample cap is connected with upper porous stone; the bottom surface of the upper porous stone is connected with a test sample. The device has the advantages that the test of horizontal radial deformation to the destroying process of the soil sample under the condition of increased vertical pressure is monitored, and the significant meaning is realized for the study on influence to adjacent foundation oil, soil edge slopes and the like by loads (including rainfall), and the related engineering.

Description

A kind of identifying device of static triarial test soil sample horizontal radial deformation and method
Technical field
The present invention relates to the unconventional technical field of measurement and test of soil test, specially a kind of static triarial test soil sample horizontal radial The identifying device of deformation and method.
Background technology
Triaxial test is one of important tests method of soil mechanics, is also a kind of important soil test.Three axle examinations of soil Test shearing strength (c, the φ being mainly used in test sample;c:The cohesiveness of soil, kPa;φ:Soil internal friction angle, °), lateral pressure Coefficient (k0, dimensionless) and triaxial compressions.Wherein shearing strength or triaxial compression test method are in soil sample certain confined pressure state Under, gradually apply axial compressive force to soil sample simultaneously, shearing or the compression parameters to calculate the soil body for the vertical deformation of test soil sample, right In the Research And Engineering of soil body aspect, these indexs are certainly critically important.However, gradually applying the same of axial compressive force to soil sample When, in addition to tested vertical deformation, soil sample may produce certain radial level deformation as tympanites, distortion, along crack Face destruction etc., and this horizontal radial is deformed into destructive process and has no tested or be applied protection, but the test of this process Water level is caused to reduce on surface subsidence, ground fissure impact, rainfall or load to soil in the impact to the soil body for the load, exploiting groundwater The research of aspect such as matter side slope, foundation ditch be stable and engineering have particular importance meaning.
Content of the invention
It is an object of the invention to provide, to solve the problems, such as to propose in above-mentioned background technology.
For achieving the above object, the present invention provides following technical scheme:A kind of static triarial test soil sample horizontal radial deformation Identifying device and method, including processing module, adopt control device, sample horizontal radial deformation and destructive process monitoring device, quiet three Axle pressure chamber;Described processing module is associated with adopting control device;Described adopt control device input and the deformation of sample horizontal radial and Destructive process monitoring device data cube computation;Described sample horizontal radial deformation and destructive process monitoring device are arranged on quiet three axles The outside of pressure chamber;The top middle position of described quiet triaxial cell is provided with depression bar;Described depression bar circular arc side is even It is connected to quiet triaxial cell top shell;Described quiet triaxial cell top shell bottom surface is connected with cylinder by antermarginal position;Described The bottom surface of depression bar be connected with sample cap;The bottom surface of described sample cap is connected with upper dankness stone;The bottom of described upper dankness stone Face is connected with sample;The bottom surface of described sample is provided with lower permeable stone;The top of described depression bar is connected with contiguous block;Described Contiguous block be arranged on the middle position of pressure frame top board;The bottom surface surrounding of described pressure frame top board lean on antermarginal position with Quiet triaxial cell is connected.
State the present invention further, including processing module, adopt control device, the deformation of sample horizontal radial and destructive process monitoring dress Put, quiet triaxial cell;Described processing module is associated with adopting control device;Described adopts control device input and sample horizontal radial Deformation and destructive process monitoring device data cube computation;Described sample horizontal radial deformation and destructive process monitoring device are arranged on The outside of quiet triaxial cell;The top middle position of described quiet triaxial cell is provided with depression bar;Described depression bar circular arc Side is connected with quiet triaxial cell top shell;Described quiet triaxial cell top shell bottom surface is connected with cylinder by antermarginal position Body;The bottom surface of described depression bar is connected with sample cap;The bottom surface of described sample cap is connected with upper dankness stone;Described is upper permeable The bottom surface of stone is connected with sample;The bottom surface of described sample is provided with lower permeable stone;The top of described depression bar is connected with connection Block;Described contiguous block is arranged on the middle position of pressure frame top board;The bottom surface surrounding of described pressure frame leans on antermarginal position Put and be connected with quiet triaxial cell.
State the present invention further, the bottom surface of described lower permeable stone is provided with quiet triaxial cell base;Described sample Position between side and cylinder is provided with confined pressure inlet/outlet pipe.
State the present invention further, described quiet triaxial cell top shell is provided with sealing top with the contact position of depression bar Lid;The color of described cylinder is transparent;Described cylinder be shaped as hollow circular cylinder;Described depression bar top and contiguous block Contact position middle position is provided with pressure at right angle sensor;The side of described pressure at right angle sensor is provided with deformation-sensor.
State the present invention further, described confined pressure inlet/outlet pipe one end is arranged on quiet triaxial pressure indoor;Described The other end of confined pressure inlet/outlet pipe is arranged on quiet triaxial cell base one side middle position;Described lower permeable stone and quiet three The junction middle position of axle pressure chamber base has lower hole outlet;In described sample cap and upper dankness stone junction Centre position is provided with hole water outlet pipe;The described other end of upper hole water outlet pipe and lower hole water outlet pipe side phase Connect.
State the present invention further, described processing module includes computer, geotechnological data processing software;Described sample Horizontal radial deformation and destructive process monitoring device can be three dimension laser scanning surreying device and other related monitoring devices;Described Sample horizontal radial deformation and destructive process monitoring device test lead can be provided with laser scanning head;Described monitoring means target As laser scanning head registration coupon middle position.
State the present invention further, described processing module data input pin is with the data output end data adopting control device even Connect;The described data input pin adopting control device is connected with the deformation of sample horizontal radial and destructive process monitoring device data output end Connect.
When stating that the present invention, described sample horizontal radial deformation and destructive process monitoring device follow standard further Between;The computer installation time of described processing module is identical with the deformation of sample horizontal radial and destructive process monitoring device.
Compared with prior art, the invention has the beneficial effects as follows:The present invention adopts quiet triaxial cell, quiet triaxial cell Need especially transparent setting, sample horizontal radial deformation and destructive process monitoring device cocoa be three dimension laser scanning surreying device or Other relevant apparatus, this device can carry out motion transformation, and this device is provided with laser scanning testing head, and sample target is entered Row initial condition and sample change procedure carry out 3 D laser scanning or related monitoring, and automatic record storage, thus complete soil Sample horizontal displacement is tested, and whole test processs is automatically performed by this device, high degree of automation, and data is accurate, to related work Make there is very big reference value.
Brief description
Fig. 1 is present configuration schematic diagram;
Fig. 2 is the lateral radial deformation of sample of the present invention and destructive process schematic diagram;
Fig. 3 is method of testing flow chart of the present invention.
In figure:1st, processing module;2nd, adopt control device;3rd, the deformation of sample horizontal radial and destructive process monitoring device;4th, depression bar; 5th, top pressure closure;6th, quiet triaxial cell;7th, quiet triaxial cell top shell;8th, pressure at right angle sensor;9th, contiguous block;10th, cylinder Body;11st, upper hole water outlet pipe;12nd, lower permeable stone;13rd, confined pressure inlet/outlet pipe;14th, quiet triaxial cell base;15th, lower opening Gap water outlet pipe;16th, upper dankness stone;17th, sample;18th, sample cap;19th, pressure frame top board;20th, laser scanning head;21.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work Embodiment, broadly falls into the scope of protection of the invention.
Refer to Fig. 1-3, the present invention provides a kind of technical scheme:Including processing module 1, adopt control device 2, sample horizontal radial Deformation and destructive process monitoring device 3, quiet triaxial cell 6;Described processing module 1 is associated with adopting control device 2;Described adopts Control device 2 input and the deformation of sample horizontal radial and destructive process monitoring device 3 data cube computation;Described sample horizontal radial becomes Shape and destructive process monitoring device 3 are arranged on the outside of quiet triaxial cell 6;The top central authorities of described quiet triaxial cell 6 Position is provided with depression bar 4;Described depression bar 4 circular arc side is connected with quiet triaxial cell top shell 7;Described quiet triaxial cell Top shell 7 bottom surface is connected with cylinder 10 by antermarginal position;The bottom surface of described depression bar 4 is connected with sample cap 18;Described examination The bottom surface of sample cap 18 is connected with upper dankness stone 16;The bottom surface of described upper dankness stone 16 is connected with sample 17;Described sample 17 Bottom surface be provided with lower permeable stone 12;The top of described depression bar 4 is connected with contiguous block 9;Described contiguous block 9 is arranged on pressure The middle position of frame top board 19;The bottom surface surrounding of described pressure frame top board 19 leans on antermarginal position and quiet triaxial cell 6 It is connected;The bottom surface of described lower permeable stone 12 is provided with quiet triaxial cell base 14;Described sample 17 side and cylinder 10 Between position be provided with confined pressure inlet/outlet pipe 13;Described quiet triaxial cell top shell 7 and the contact position of depression bar 4 are provided with Top pressure closure 5;The color of described cylinder 10 is transparent;Described cylinder 10 be shaped as hollow circular cylinder;Described depression bar 4 Top and contiguous block 9 contact position middle position are provided with pressure at right angle sensor 8;The side of described pressure at right angle sensor 8 It is provided with deformation-sensor 21;Described confined pressure inlet/outlet pipe 13 one end is arranged on inside quiet triaxial cell 6;Described confined pressure is entered The other end of outlet 13 is arranged on quiet triaxial cell base 14 one side and leans on ectocentral position;Described lower permeable stone 12 Have lower hole outlet 15 with the junction middle position of quiet triaxial cell base 14;Described sample cap 18 is permeable with upper The middle position of stone 16 junction is provided with hole water outlet pipe 11;The described other end of upper hole water outlet pipe 11 with Hole water outlet pipe 15 side is connected;Described processing module 1 includes computer, geotechnological data processing software;Described examination The deformation of sample horizontal radial and destructive process monitoring device 3 can be three dimension laser scanning surreying device;Described sample horizontal radial Deformation and destructive process monitoring device 3 test lead can be provided with laser scanning head 20;Described laser scanning head 20 registration coupon 17 Middle position;Described processing module 1 data input pin and the data output end data cube computation adopting control device 2;Described adopts control device 2 The deformation of data input pin and sample horizontal radial and destructive process monitoring device 3 data output end be connected;Described sample Horizontal radial deformation and destructive process monitoring device 3 follow the standard time;The computer installation time of described processing module 1 with The deformation of sample horizontal radial and destructive process monitoring device 3 are identical.
In the specific implementation, quiet triaxial cell 6 is transparent setting to the present invention, and sample horizontal radial deforms and destructive process Monitoring device 3 to record target through the sample 17 with quiet triaxial cell 6 for scanning and can carry out motion transformation, Sample horizontal radial deformation and destructive process monitoring device 3 on or be provided with laser scanning testing head 20, original shape is carried out to sample 17 State and test compression process can carry out three dimension laser scanning surreying, and record storage, realize the record of data, facilitate the right of data Than;When carrying out triaxial test, apply stress while sample 17 produces vertical deformation, sample horizontal radial deforms and destroyed Journey monitoring device 3 records the profile border of sample 17 radial deformation and destructive process by measuring under different stress, depression bar 4 applies Apply different pressure P1、P2、P3, to deformation or destructiveness difference, change procedure is Fig. 2 to the level of sample 17, until sample 17 produce destruction, obtain not the intensity of variation of soil sample in the same time with original sample contrast, thus complete soil sample radial deformation to destruction The test of process, convenient research and the carrying out of real work, have important reference value to related work.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, permissible Understand and can carry out multiple changes, modification, replacement to these embodiments without departing from the principles and spirit of the present invention And modification, the scope of the present invention be defined by the appended.
In addition, the present invention obtains project of national nature science fund project:The recognition methodss research of subsoil water critical exploitation water level (No:41272301) and institute of Chinese Academy of Geological Sciences control project:Multi- scenarios method type high pressure triaxial test system development (No: YYWF201628) support.

Claims (7)

1. a kind of identifying device of static triarial test soil sample horizontal radial deformation and method it is characterised in that:Including processing module (1) control device (2), the deformation of sample horizontal radial and destructive process monitoring device (3), quiet triaxial cell (6), are adopted;Described place Reason module (1) is associated with adopting control device (2);Described adopts control device (2) input and the deformation of sample horizontal radial and destructive process Monitoring device (3) data cube computation;Described sample horizontal radial deformation and destructive process monitoring device (3) are arranged on quiet three axial compressions The outside of power room (6);The top middle position of described quiet triaxial cell (6) is provided with depression bar (4);Described depression bar (4) Circular arc side is connected with quiet triaxial cell top shell (7);Antermarginal position is leaned in described quiet triaxial cell top shell (7) bottom surface It is connected with cylinder (10);The bottom surface of described depression bar (4) is connected with sample cap (18);The bottom surface of described sample cap (18) connects There is upper dankness stone (16);The bottom surface of described upper dankness stone (16) is connected with sample (17);The bottom surface of described sample (17) sets It is equipped with lower permeable stone (12);The top of described depression bar (4) is connected with contiguous block (9);Described contiguous block (9) is arranged on pressure The middle position of frame top board (19);The bottom surface surrounding of described pressure frame top board (19) leans on antermarginal position and quiet triaxial pressure Room (6) is connected.
2. a kind of identifying device of static triarial test soil sample horizontal radial deformation according to claim 1 and method, it is special Levy and be:The bottom surface of described lower permeable stone (12) is provided with quiet triaxial cell base (14);Described sample (17) side with Position between cylinder (10) is provided with confined pressure inlet/outlet pipe (13).
3. the identifying device of a kind of static triarial test soil sample horizontal radial deformation according to claim (1) and method, its It is characterised by:Described quiet triaxial cell top shell (7) is provided with top pressure closure (5) with the contact position of depression bar (4);Described The color of cylinder (10) is transparent;Described cylinder (10) be shaped as hollow circular cylinder;Described depression bar (4) top be connected Block (9) contact position middle position is provided with pressure at right angle sensor (8);The side of described pressure at right angle sensor (8) is provided with Deformation-sensor (21).
4. a kind of identifying device of static triarial test soil sample horizontal radial deformation according to claim 1 and 2 and method, its It is characterised by:Described confined pressure inlet/outlet pipe (13) one end is arranged on inside quiet triaxial cell (6);Described confined pressure is imported and exported The other end of pipe (13) is arranged on quiet triaxial cell base (14) one side and leans on ectocentral position;Described lower permeable stone (12) have lower hole outlet (15) with the junction middle position of quiet triaxial cell base (14);Described sample cap (18) middle position of upper dankness stone (16) junction is provided with hole water outlet pipe (11);Described upper hole water out The other end of pipe (11) is connected with lower hole water outlet pipe (15) side.
5. a kind of identifying device of static triarial test soil sample horizontal radial deformation according to claim 1 and method, it is special Levy and be:Described processing module (1) includes computer, geotechnological data processing software;Described sample horizontal radial deformation and Destructive process monitoring device (3) can be three dimension laser scanning surreying device;Described sample horizontal radial deformation and destructive process Monitoring device (3) test lead can be provided with laser scanning head (20);Described laser scanning head (20) registration coupon (17) central authorities position Put.
6. a kind of identifying device of static triarial test soil sample horizontal radial deformation according to claim 1 and method, it is special Levy and be:Described processing module (1) data input pin and the data output end data cube computation adopting control device (2);Described adopts control The data input pin of device (2) is connected with the deformation of sample horizontal radial and destructive process monitoring device (3) data output end.
7. the identifying device of a kind of static triarial test soil sample horizontal radial deformation according to claim 1 or 6 and method, its It is characterised by that described sample horizontal radial deformation and destructive process monitoring device (3) follow the standard time;Described process mould The computer installation time of block (1) is identical with the deformation of sample horizontal radial and destructive process monitoring device (3).
CN201610770993.XA 2016-08-31 2016-08-31 Device and method for identifying horizontal radial deformation of soil sample in static triaxial test Active CN106404524B (en)

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CN109596814A (en) * 2019-01-10 2019-04-09 中山大学 The layer of sand three-dimensional grouting test device and its test method of analog actual condition

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CN109596814A (en) * 2019-01-10 2019-04-09 中山大学 The layer of sand three-dimensional grouting test device and its test method of analog actual condition

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