LIU Shi-wei, SHENG Qian, GONG Yan-feng, et al. A method for determinating shear strength using shear stress concentration factor and its engineering application[J]. 2017, 38(S1): 53-60.
LIU Shi-wei, SHENG Qian, GONG Yan-feng, et al. A method for determinating shear strength using shear stress concentration factor and its engineering application[J]. 2017, 38(S1): 53-60.DOI: 10.16285/j.rsm.2017.S1.006.
This paper proposes a method for determination of shear strength based on stress concentration factor by investigating the distribution regularity of stress concentration factor in the shear plane and analyzing the curves of shear stress-shear displacement. Laboratory large-scale direct shear tests are conducted on the specimens from clay layer with breccia along Wuhan metro line 6. the variations of shear strength parameters of the soil layer with the stone content variation are determined. Through comparing this method with procedures in codes
the feasibility of this method are discussed. The results show that the stress concentration factor K0 partly reflect the shear strength of the soil; the cohesion of clay containing breccia approximately increases linearly with the increase of stone content
which is consistent with the existing research results. This method for shear strength based on stress concentration factor
can be used as an effective way to study soil strength characteristics.