CN203929477U - A kind of unsaturated soil direct shear apparatus infiltration device - Google Patents
A kind of unsaturated soil direct shear apparatus infiltration device Download PDFInfo
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- CN203929477U CN203929477U CN201420363505.XU CN201420363505U CN203929477U CN 203929477 U CN203929477 U CN 203929477U CN 201420363505 U CN201420363505 U CN 201420363505U CN 203929477 U CN203929477 U CN 203929477U
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- cushion block
- pedestal
- unsaturated soil
- infiltration device
- direct shear
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model relates to a kind of unsaturated soil direct shear apparatus infiltration device.It comprises upper cover, cylinder, vertical load transmission rod, cylindrical cushion block, permeable stone, shear box, shearing bringing device, pedestal, bottom water feed apparatus; Described cylinder top is covered with upper cover, and below is chimeric pedestal; Described vertical load transmission rod is arranged on the central authorities of upper cover, and its lower end is provided with cylindrical cushion block, permeable stone, shear box successively; Described cylindrical cushion block is provided with the circle water inlet aperture of connecting duct, and conduit passes from pedestal; Described shear box is connected with shearing bringing device 7; Described bottom water feed apparatus is arranged on the below of shear box and passes from pedestal.Compared with prior art, unsaturated soil direct shear apparatus described in the utility model infiltration device has been realized the even humidification in sample top immersion in humidification direct shear test or bottom immersion situation, and improved the precision of test, and to meet the requirement of test, and cost-saving to greatest extent.
Description
Technical field
The utility model belongs to civil engineering work soil test device technique field, specifically, relates to a kind of unsaturated soil direct shear apparatus infiltration device.
Background technology
Soil is distributed more widely in China, and area is about 600,000 sq-kms, and wherein collapsible loess area is about 400,000 sq-kms.The main body of collapsible loess is Epipleistocene and complete new loess of Pleistocene epoch, is generally positioned at the top on stratum, and airport, highway, railway are closely bound up with it.Under rainfall humidification, soil body generation strain softening, structural reduction, intensity significantly declines and causes larger humidification shear displacemant, and even soil body generation shear failure, causes the engineering accidents such as slope instability.Therefore, in engineering construction, must consider that the local humidifying of loess shear zone destroys the impact bringing, have deep understanding to solve to native shearing strength characteristic.
Unsaturation direct shear apparatus is the key instrument of research shear strength of loess, can cut characteristic research to shear displacemant, vertical displacement etc. in loess humidification shear history are wet.But current unsaturation direct shear apparatus can not be realized the even humidification of sample, and humidification mode is more single, can only realize bottom immersion humidification, make sample humidification inhomogeneous, test accuracy is inadequate, has affected test and the research of soil shear strength parameter.
Summary of the invention
For solving the problems of the technologies described above, the utility model provides the unsaturated soil direct shear apparatus infiltration device of the even humidification of a kind of multipath.
Unsaturated soil direct shear apparatus infiltration device described in the utility model, described infiltration device comprises upper cover 3, cylinder 2, vertical load transmission rod 1, cylindrical cushion block 4, permeable stone 5, shear box 6, shearing bringing device 7, pedestal 8, bottom water feed apparatus 11; Described cylinder 2 tops are covered with upper cover 3, and below is chimeric pedestal 8; Described vertical load transmission rod 1 is arranged on the central authorities of upper cover 3, and its lower end is provided with cylindrical cushion block 4, permeable stone 5, shear box 6 successively; Described cylindrical cushion block 4 is provided with the circular inlet opening 12 of connecting duct 10, and conduit 10 passes from pedestal 8; Described shear box 6 is connected with shearing bringing device 7; Described bottom water feed apparatus 11 is arranged on the below of shear box 6 and passes from pedestal 8.
Unsaturated soil direct shear apparatus infiltration device described in the utility model, described conduit 10 is connected with external flow meter, and uses valve controlling flow amount.
Unsaturated soil direct shear apparatus infiltration device described in the utility model, described cylindrical cushion block 4 is provided with the circular inlet opening 12 of 4 connecting ducts 10.
Unsaturated soil direct shear apparatus infiltration device described in the utility model, the center of circle of the cylindrical cushion block 4 of distance of center circle of described circular inlet opening 12 is 15-16mm.
Unsaturated soil direct shear apparatus infiltration device described in the utility model, the diameter of described circular inlet opening 12 is 5-6mm.
Unsaturated soil direct shear apparatus infiltration device described in the utility model, O-ring seal is equipped with in described circular inlet opening 12.
Compared with prior art, unsaturated soil direct shear apparatus infiltration device described in the utility model by arranging the circle water inlet aperture of carrying pipe on cylindrical cushion block, and combination seal circle and permeable stone, realize the even humidification in the immersion of sample top in humidification direct shear test or bottom immersion situation, and improve the precision of test, to meet the requirement of test, and cost-saving to greatest extent.
Brief description of the drawings
Fig. 1: unsaturated soil direct shear apparatus infiltration apparatus structure schematic diagram; Fig. 2: cylindrical cushion block planimetric map; 1-vertical load transmission rod, 2-cylinder, 3-upper cover, the cylindrical cushion block of 4-, 5-permeable stone, 6-shear box, 7-shearing bringing device, 8-pedestal, 9-conduit, 10-valve, 11-bottom water feed apparatus, the circular inlet opening of 12-, 13-O-ring seal.
Embodiment
Below in conjunction with specific embodiment, unsaturated soil direct shear apparatus infiltration device described in the utility model is described further, but protection domain of the present utility model is not limited to this.
Embodiment 1
A kind of unsaturated soil direct shear apparatus infiltration device, described infiltration device comprises upper cover 3, cylinder 2, vertical load transmission rod 1, cylindrical cushion block 4, permeable stone 5, shear box 6, shearing bringing device 7, pedestal 8, bottom water feed apparatus 11; Described cylinder 2 tops are covered with upper cover 3, and below is chimeric pedestal 8; Described vertical load transmission rod 1 is arranged on the central authorities of upper cover 3, and its lower end is provided with cylindrical cushion block 4, permeable stone 5, shear box 6 successively; Described cylindrical cushion block 4 is provided with the circle water inlet aperture 12 of connecting duct 10, and conduit 10 passes from pedestal 8; Described shear box 6 is connected with shearing bringing device 7; Described bottom water feed apparatus 11 is arranged on the below of shear box 6 and passes from pedestal 8; Described conduit 10 is connected with external flow meter, and uses valve controlling flow amount; Described cylindrical cushion block 4 is provided with the circle water inlet aperture 12 of 4 connecting ducts 10; The center of circle of the cylindrical cushion block 4 of distance of center circle of described circular water inlet aperture 12 is 15.075mm; The diameter of described circular water inlet aperture 12 is 6mm; Described circular water inlet aperture 12 is equipped with O-ring seal.
Compared with prior art, unsaturated soil direct shear apparatus infiltration device described in the utility model by arranging the circle water inlet aperture of carrying pipe on cylindrical cushion block, and combination seal circle and permeable stone, after preventing from installing additional conduit, leak and ensure that moisture evenly enters sample, avoid causing that sample immersion position washes away, realize the even humidification in the immersion of sample top in humidification direct shear test or bottom immersion situation, and improve the precision of test, to meet the requirement of test, and cost-saving to greatest extent.
Claims (6)
1. a unsaturated soil direct shear apparatus infiltration device, it is characterized in that, described infiltration device comprises upper cover (3), cylinder (2), vertical load transmission rod (1), cylindrical cushion block (4), permeable stone (5), shear box (6), shearing bringing device (7), pedestal (8), bottom water feed apparatus (11); Described cylinder (2) top is covered with upper cover (3), and below is chimeric pedestal (8); Described vertical load transmission rod (1) is arranged on the central authorities of upper cover (3), and its lower end is provided with cylindrical cushion block (4), permeable stone (5), shear box (6) successively; Described cylindrical cushion block (4) is provided with the circular inlet opening (12) of connecting duct (10), and conduit (10) passes from pedestal (8); Described shear box (6) is connected with shearing bringing device (7); Described bottom water feed apparatus (11) is arranged on the below of shear box (6) and passes from pedestal (8).
2. a kind of unsaturated soil direct shear apparatus infiltration device according to claim 1, is characterized in that, described conduit (10) is connected with external flow meter, and uses valve controlling flow amount.
3. a kind of unsaturated soil direct shear apparatus infiltration device according to claim 1, is characterized in that, described cylindrical cushion block (4) is provided with the circular inlet opening (12) of 4 connecting ducts (10).
4. a kind of unsaturated soil direct shear apparatus infiltration device according to claim 3, is characterized in that, the center of circle of the cylindrical cushion block of distance of center circle (4) of described circular inlet opening (12) is 15-16mm.
5. a kind of unsaturated soil direct shear apparatus infiltration device according to claim 3, is characterized in that, the diameter of described circular inlet opening (12) is 5-6mm.
6. a kind of unsaturated soil direct shear apparatus infiltration device according to claim 3, is characterized in that, O-ring seal is equipped with in described circular inlet opening (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420363505.XU CN203929477U (en) | 2014-07-02 | 2014-07-02 | A kind of unsaturated soil direct shear apparatus infiltration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420363505.XU CN203929477U (en) | 2014-07-02 | 2014-07-02 | A kind of unsaturated soil direct shear apparatus infiltration device |
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| Publication Number | Publication Date |
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| CN203929477U true CN203929477U (en) | 2014-11-05 |
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| CN201420363505.XU Expired - Fee Related CN203929477U (en) | 2014-07-02 | 2014-07-02 | A kind of unsaturated soil direct shear apparatus infiltration device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104596907A (en) * | 2015-01-28 | 2015-05-06 | 太原理工大学 | Measurement method for large-displacement shear-flow of rock under high temperature and high pressure |
| CN105971030A (en) * | 2016-06-12 | 2016-09-28 | 长安大学 | Long-term soaking dead load device suitable for compaction test piece |
| CN108956331A (en) * | 2018-05-26 | 2018-12-07 | 云南农业大学 | Unsaturated soil capillary sucks direct shear apparatus and application method |
| CN113533068A (en) * | 2021-08-02 | 2021-10-22 | 中国科学院武汉岩土力学研究所 | Sealing device, installation method and sealing system based on deep rock mass test |
-
2014
- 2014-07-02 CN CN201420363505.XU patent/CN203929477U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104596907A (en) * | 2015-01-28 | 2015-05-06 | 太原理工大学 | Measurement method for large-displacement shear-flow of rock under high temperature and high pressure |
| CN104596907B (en) * | 2015-01-28 | 2017-05-31 | 太原理工大学 | Rock big displacement shears the measuring method of seepage flow under HTHP |
| CN105971030A (en) * | 2016-06-12 | 2016-09-28 | 长安大学 | Long-term soaking dead load device suitable for compaction test piece |
| CN105971030B (en) * | 2016-06-12 | 2018-05-18 | 长安大学 | A kind of long-term immersion dead load device for being suitable for hitting real test specimen |
| CN108956331A (en) * | 2018-05-26 | 2018-12-07 | 云南农业大学 | Unsaturated soil capillary sucks direct shear apparatus and application method |
| CN113533068A (en) * | 2021-08-02 | 2021-10-22 | 中国科学院武汉岩土力学研究所 | Sealing device, installation method and sealing system based on deep rock mass test |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| 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: 20141105 Termination date: 20190702 |