In-situ direct shear test and numerical simulation of slate structural planes with thick muddy interlayer along bedding slope

2021 ◽  
Vol 143 ◽  
pp. 104791
Author(s):  
Xin Tan ◽  
Ya-kun Ren ◽  
Teng-long Li ◽  
Su-hua Zhou ◽  
Jiu-chang Zhang ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Direct Shear Test ◽  
Shear Test ◽  
Direct Shear ◽  
Bedding Slope

Numerical Simulation of Interface Softening for Large Size Direct Shear Test

2011 ◽  
Vol 368-373 ◽  
pp. 3230-3235
Author(s):  
Zhao Yun Xiao ◽  
Wei Xu ◽  
Yan Sheng Deng ◽  
Fan Tu
Keyword(s):  
Numerical Simulation ◽  
Direct Shear Test ◽  
Shear Test ◽  
Friction Model ◽  
Secondary Development ◽  
Direct Shear ◽  
Shear Tests ◽  
Direct Shear Tests ◽  
Softening Behavior ◽  
Large Size

The interface of non-woven geotextile and HDPE geomembrane based on direct shear test has an obvious softening behavior. This paper adopts displacement-softening model that proposed by Esterhuizen and conducts secondary development by using ABAQUS and its embedded FRIC subroutine, making further efforts to conduct numerical simulation of interface of non-woven geotextile and HDPE geomembrane based on large-size direct shear tests. Results show that the developed interface friction model can simulate the characteristics of interface softening of certain materials better, thus providing a method when study the interface softening characteristic of materials.

Discussion on “Development of a New In-Situ Direct Shear Test” by H. Matsuoka, S. Liu, D. Sun, and U. Nishikata

2002 ◽  
Vol 25 (3) ◽  
pp. 10652
Author(s):  
L David Suits ◽  
TC Sheahan ◽  
T Mirata
Keyword(s):  
Direct Shear Test ◽  
Shear Test ◽  
Direct Shear

Stability analysis of Llerin Rockfill Dam: An in situ direct shear test

2008 ◽  
Vol 100 (3-4) ◽  
pp. 120-130 ◽  
Author(s):  
P. Ramírez Oyanguren ◽  
C. González Nicieza ◽  
M.I. Álvarez Fernández ◽  
C. González Palacio
Keyword(s):  
Stability Analysis ◽  
Direct Shear Test ◽  
Shear Test ◽  
Direct Shear ◽  
Rockfill Dam

Application of In Situ Direct Shear Test for Obtaining Soil Shear Strength Indexes in Projects

2013 ◽  
Vol 788 ◽  
pp. 615-618
Author(s):  
Yu Jun Lu ◽  
Xin Sheng Ge
Keyword(s):  
Shear Strength ◽  
Direct Shear Test ◽  
Shear Test ◽  
Soil Condition ◽  
Direct Shear ◽  
Foundation Pit ◽  
Foundation Soil ◽  
Material Resources ◽  
Building Foundation

In order to provide precise shear strength indexes for a building foundation pit supporting project, the second layer and the third layer of foundation soil were in-situ direct shear test. In-situ direct shear test has its own advantages in projects, and it simulates the real soil condition and reflects practical shear strength. But in-situ shear test requires lots of manpower, material resources and financial resources, so it is not convenient to carry out a lot in practical projects.

scholarly journals AE monitoring during the in-situ direct shear test applied to an underground cavern.

1986 ◽  
pp. 141-149
Author(s):  
Tsuyoshi ISHIDA ◽  
Tadashi KANAGAWA ◽  
Shunji SASAKI ◽  
Yoshihiko URASAWA
Keyword(s):  
Direct Shear Test ◽  
Shear Test ◽  
Direct Shear ◽  
Underground Cavern

Effect of weathering on the compressibility and shear strength of a natural clay

2006 ◽  
Vol 43 (6) ◽  
pp. 618-625 ◽  
Author(s):  
Giovanni Gullà ◽  
Maria Clorinda Mandaglio ◽  
Nicola Moraci
Keyword(s):  
Shear Strength ◽  
Direct Shear Test ◽  
Shear Test ◽  
Direct Shear ◽  
Test Results ◽  
Natural Clay ◽  
Standard Equipment ◽  
Overconsolidated Clays ◽  
Weathering Process

In situ, seasonal changes expose soils to frequent wetting–drying–freezing–thawing cycles. Such processes can favour and trigger shallow instabilities controlled by the weathering process. This paper presents an experimental study carried out to investigate the effects of the weathering process, caused by the wetting–drying–freezing–thawing cycles, on the compressibility and shear strength of a natural clay. Several specimens were trimmed from block samples of overconsolidated clays taken from a slope in south Calabria, Italy. Specimens were subjected to wetting–drying–freezing–thawing cycles of different durations and then tested with standard equipment (oedometer and direct shear). Test results show that the wetting–drying–freezing–thawing cycles caused a change in the initial microstructure that produced a decrease in the compression index and an increase in the swelling index. Moreover, the direct shear test results show a decrease in the peak shear strength and demonstrate that a larger reduction occurs in the first month of weathering cycles. The intense cycles performed in the laboratory produced a decay of compressibility and a shear strength approaching reconstituted values. The conclusions are important when choosing the shear strength parameters required when studying shallow landsliding in clay slopes.Key words: weathered clay, structure, cycle of degradation, shallow instability.

Sign in / Sign up

Export Citation Format

Share Document