CN202582979U - Soil sample uniaxial direct tensioning device - Google Patents
Soil sample uniaxial direct tensioning device Download PDFInfo
- Publication number
- CN202582979U CN202582979U CN 201220021575 CN201220021575U CN202582979U CN 202582979 U CN202582979 U CN 202582979U CN 201220021575 CN201220021575 CN 201220021575 CN 201220021575 U CN201220021575 U CN 201220021575U CN 202582979 U CN202582979 U CN 202582979U
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- soil sample
- soil
- tensioning device
- uniaxial direct
- fastening parts
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
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Abstract
The utility model relates to a soil sample uniaxial direct tensioning device. The soil sample uniaxial direct tensioning device is used to connect a soil sample and a device in a soil sample tension test, and comprises two cylindrical soil sample clamping devices which are arranged symmetrically. Each soil sample clamping device is formed by combination of two semi-cylindrical fastening parts, a semi-circle diameter-changing groove channel is arranged in each inward side of the fastening parts in digging mode, the outer back portion of the semi-circle diameter-changing groove channel expands, and a connecting screw hole used to combine and fix two fastening parts is arranged in each outward side of the fastening parts in penetrating mode. In the process of conducting tensile tests, after placing two ends of a soil sample into diameter-changing groove holes of the soil sample uniaxial direct tensioning device which is open symmetrically, users utilize screws to connect fastening parts of the clamping device fixedly and fix the soil sample in the tensioning device, and then uniaxial direct tensioning strength of soil can be measured accurately by exerting tension on two ends of the tensioning device. The soil sample uniaxial direct tensioning device has the advantages of guaranteeing that the soil sample fractures along the middle of the soil sample in the process of tensioning and removing influence of the clamping device on the soil sample completely, thereby guaranteeing test data to be accurate and reliable.
Description
Technical field
The utility model belongs to the soil test equipment technical field, relates to and is used for the soil sample uniaxial direct tension device that soil sample is connected with instrument in a kind of soil sample tension test.
Background technology
Soil test is the main research mode that obtains the mechanics index of physics of soil in the engineering construction.Because soil has bigger compressive strength, shearing strength; Cohesive soil, soil cement, dirt etc. also have certain pulling strengrth simultaneously; For making full use of the various mechanical properties of soil, the research to the pulling strengrth of soil at present begins to receive gradually geotechnological researchist's attention.In the prior art, the numerical value of the tensile strength of soil can obtain through indirect tension test and direct tensile test.The indirect tension test method comprises radially method such as split the law, axial Splitting Method, and the pulling strengrth of employing elastic plastic theory calculating soil, but its theoretical complicacy can not reflect native actual pulling strengrth well.Direct tensile test comprises uniaxial direct tension and three forms such as stretching; Direct tensile test particularly uniaxial direct tension test has the advantage of theoretical simple, explicit physical meaning; The actual pulling strengrth that can reflect soil preferably; But soil is being carried out finding in the actual extension test soil sample is the problem of an intractable with traditional being connected of stretching instrument, because the researcher carries out direct uniaxial tensile test to soil sample now; General all be soil sample is processed the one-shot forming cylindrical sample the same with the standard triaxial compression test (can not compaction in layers; Otherwise artificial weak structural plane can appear), make an experiment with anchor clamps or to two ends glue connected mode then, because soil has elastoplasticity; Furthermore anchor clamps or glue connect the influence to soil sample; Rupture with the contact position of stretching clamp or with the glue junction at soil because of the distortion of soil easily when soil sample is drawn, so that test figure can not reflect native actual tensile strength reliably, and then the research that soil is carried out direct tensile test is restricted.
The utility model content
The purpose of the utility model is the problem that prior art exists is solved; A kind of simple in structure, cost, test data are provided accurately and reliably, thereby can truly represent the pulling strengrth of soil to efficiently solve soil sample in the present soil sample tension test is connected a difficult problem with instrument soil sample uniaxial direct tension device.
For realizing that the technical solution that the foregoing invention purpose adopts is such: the soil sample uniaxial direct tension device that is provided comprises two symmetrically arranged cylindrical soil sample anchor clamps; Each soil sample anchor clamps is by two involutory formations of half-cylindrical buckling piece; All excavate the semicircle reducing conduit that expand at the rear portion outside at the interior of every buckling piece to side, be equipped with in the export-oriented side of buckling piece and be used to make two involutory screws that are fixedly coupled of buckling piece.The utility model is to eliminate the influence that anchor clamps in the past or glue connect; The test soil sample is adopted the reducing sample; Promptly when sample production; Adopt a fixed mold that the uniform sample of density is cut into middle thin, the thick special-shaped soil sample in two ends, the wire nail handle shape reducing slotted eye that the involutory back of anchor clamps buckling piece forms in its two ends shape and the utility model is complementary.When doing tension test; After the soil sample two ends being put into the reducing slotted eye of the soil sample uniaxial direct tension device of splitting; Make the anchor clamps buckling piece affixed with screw rod; Soil sample is fixed in the stretcher, afterwards again through the stretcher two ends are applied pulling force (can on the triaxial apparatus or other can measure on the puller system of ess-strain carry out), realize accurately measuring the uniaxial direct tension intensity of soil.Through practice examining, because this soil sample uniaxial direct tension device is thin in the middle of adopting, the two ends soil sample of transition slightly and gradually, the influence of anchor clamps to soil sample eliminated in fracture in the middle of the soil sample fully in the time of guaranteeing that soil sample stretches, thereby can the warranty test data accurately reliable.
Compared with prior art; The major advantage that the utlity model has is: product is applicable to the mensuration of the uniaxial direct tension intensity of multiple soil samples such as undisturbed soil, disturbed soil, soil cement that can moulding, explicit physical meaning, and instrumentation is simple; Cost; Test data can truly be represented the pulling strengrth of soil accurately and reliably, efficiently solves that soil sample is connected a difficult problem with instrument in the present soil sample tension test.
Description of drawings
Fig. 1 is the positive line of vision structural representation of a practical implementation of the utility model.
Fig. 2 is overlooking to structural representation of Fig. 1.
Fig. 3 is that the side-looking of Fig. 1 is to structural representation.
Each label is respectively in the accompanying drawing: 1-(left side) soil sample anchor clamps, and 2-(right side) soil sample anchor clamps, 3-reducing conduit, 4-connects screw; The I-center is to bursting at the seams.
Embodiment
Below will combine accompanying drawing that the utility model content is further specified; But the practical implementation form of the utility model is not limited in following embodiment, and material, size, interior shape, specification, the soil sample that the protection category of its claim also is not limited to utensil is connected the loading and unloading form of profile and utensil with instrument.
Referring to accompanying drawing; The described soil sample uniaxial direct tension of the utility model device comprises a pair of by the soil sample anchor clamps that are symmetrical set 1,2; Each soil sample anchor clamps 1,2 is by two involutory formations of semi-cylindrical buckling piece; All excavate the semicircle reducing conduit 3 that expand at the rear portion outside at the interior of every buckling piece to side; After two buckling pieces were involutory, the semicircle reducing conduit 3 on it was combined to form the wire nail handle shape reducing hole that is used for the clamping soil sample, was equipped with in the export-oriented side of buckling piece to be used to make two involutory screws 4 that are fixedly coupled of buckling piece.
Claims (1)
1. soil sample uniaxial direct tension device; It is characterized in that comprising two symmetrically arranged cylindrical soil sample anchor clamps (1,2); Each soil sample anchor clamps (1,2) are by two involutory formations of half-cylindrical buckling piece; All excavate the semicircle reducing conduit (3) that expand at the rear portion outside at the interior of every buckling piece to side, be equipped with in the export-oriented side of buckling piece and connect screw (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220021575 CN202582979U (en) | 2012-01-17 | 2012-01-17 | Soil sample uniaxial direct tensioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220021575 CN202582979U (en) | 2012-01-17 | 2012-01-17 | Soil sample uniaxial direct tensioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202582979U true CN202582979U (en) | 2012-12-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220021575 Expired - Fee Related CN202582979U (en) | 2012-01-17 | 2012-01-17 | Soil sample uniaxial direct tensioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202582979U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674723A (en) * | 2013-12-04 | 2014-03-26 | 西北农林科技大学 | Test method for determining uniaxial tensile strength of soil mass |
| CN106841259A (en) * | 2017-01-16 | 2017-06-13 | 重庆大学 | Uniaxial stretching device in situ |
| CN109520823A (en) * | 2019-01-04 | 2019-03-26 | 山东科技大学 | Embedded anchoring device and test method for rock tension test |
| CN111982675A (en) * | 2020-07-23 | 2020-11-24 | 河海大学 | Test method for integral soil uniaxial tension device |
| CN114018692A (en) * | 2021-11-10 | 2022-02-08 | 中国建筑材料科学研究总院有限公司 | Test fixture and sample to be tested |
-
2012
- 2012-01-17 CN CN 201220021575 patent/CN202582979U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674723A (en) * | 2013-12-04 | 2014-03-26 | 西北农林科技大学 | Test method for determining uniaxial tensile strength of soil mass |
| CN103674723B (en) * | 2013-12-04 | 2016-03-23 | 西北农林科技大学 | A kind of test method measuring soil body uniaxial tension test |
| CN106841259A (en) * | 2017-01-16 | 2017-06-13 | 重庆大学 | Uniaxial stretching device in situ |
| CN109520823A (en) * | 2019-01-04 | 2019-03-26 | 山东科技大学 | Embedded anchoring device and test method for rock tension test |
| CN111982675A (en) * | 2020-07-23 | 2020-11-24 | 河海大学 | Test method for integral soil uniaxial tension device |
| CN111982675B (en) * | 2020-07-23 | 2021-07-13 | 河海大学 | Test method for integral soil uniaxial tension device |
| CN114018692A (en) * | 2021-11-10 | 2022-02-08 | 中国建筑材料科学研究总院有限公司 | Test fixture and sample to be tested |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20140117 |