Title:
LARGE-SCALE DIRECT SHEAR APPARATUS FOR DIRECT SHEAR TEST OF MULTI-SIZE CYLINDRICAL UNDISTURBED SOIL SAMPLES
Document Type and Number:
WIPO Patent Application WO/2023/071315
Kind Code:
A1
Abstract:
A large-scale direct shear apparatus for direct shear test of multi-size cylindrical undisturbed soil samples, comprising an external frame (1), a sample shear box, a horizontal loading device, a vertical loading device, and a control system (13). The sample shear box is disposed in the external frame (1); the sample shear box comprises an upper shear box (5), a lower shear box (6), and a base (7); the horizontal loading device comprises a horizontal drive motor (3) equipped with a load sensor (2), a horizontal mechanical loading mechanism (4), and an upper shear box connection structure (11); the horizontal drive motor (3) is installed on an inner side of the external frame (1) and is in contact with the lower shear box (6) by means of the horizontal mechanical loading mechanism (4); the upper shear box connection structure (11) is fixed on another inner side of the external frame (1) and is in contact with the upper shear box (5); the vertical loading device comprises a vertical drive motor (3) equipped with a load sensor (2) and a vertical mechanical loading mechanism (10); the vertical drive motor (3) is installed on the lower side of the top of the external frame (1) and is connected to the vertical mechanical loading mechanism (10) at the lower side thereof. The direct shear apparatus facilitates large-scale, medium-scale, and small-scale indoor direct shear tests on cylindrical undisturbed soil samples obtained by field drilling and can improve test reliability.
Inventors:
CHEN ZHIBO (CN)
CAI JINYANG (CN)
YANG HUI (CN)
XIE YONGNING (CN)
ZENG XUMING (CN)
PAN SHENGGUI (CN)
CAI JINYANG (CN)
YANG HUI (CN)
XIE YONGNING (CN)
ZENG XUMING (CN)
PAN SHENGGUI (CN)
Application Number:
PCT/CN2022/107016
Publication Date:
May 04, 2023
Filing Date:
July 21, 2022
Export Citation:
Assignee:
UNIV FUZHOU (CN)
EAST CHINA SURVEY AND DESIGN INST FUJIAN CO LTD (CN)
EAST CHINA SURVEY AND DESIGN INST FUJIAN CO LTD (CN)
International Classes:
G01N3/24; G01N3/02
Foreign References:
| CN114062161A | 2022-02-18 | |||
| CN114062107A | 2022-02-18 | |||
| CN106940274A | 2017-07-11 | |||
| CN111982719A | 2020-11-24 | |||
| CN106896021A | 2017-06-27 | |||
| CN102494958A | 2012-06-13 | |||
| CN102435510A | 2012-05-02 | |||
| JP2001201446A | 2001-07-27 |
Attorney, Agent or Firm:
FUZHOU GEMHOPE PATENT AGENCY (CN)
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