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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2013, Vol. 14 Issue (2): 94-100    DOI: 10.1631/jzus.A1200257
Civil Engineering     
2D and 3D stability analysis of slurry trench in frictional/cohesive soil
Chang-yu Han, Jin-jian Chen, Jian-hua Wang, Xiao-he Xia
Department of Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China
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Abstract  A 2D and 3D kinematically admissible rotational failure mechanism is presented for homogeneous slurry trenches in frictional/cohesive soils. Analytical approaches are derived to obtain the upper bounds on slurry trench stability in the strict framework of limit analysis. It is shown that the factor of safety from a 3D analysis will be greater than that from a 2D analysis. Compared with the limit equilibrium method, the limit analysis method yields an unconservative estimate on the safety factors. A set of examples are presented in a wide range of parameters for 2D and 3D homogeneous slurry trenches. The factor of safety increases with increasing slurry and soil bulk density ratio, cohesion, friction angle, and with decreasing slurry level depth and trench depth ratio, trench width and depth ratio. It is convenient to assess the safety for the homogeneous slurry trenches in practical applications.

Key words： Limit analysis      Stability      Slurry trench      Diaphragm wall     
Received: 06 October 2012      Published: 31 January 2013
CLC:  TU46  
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Chang-yu Han
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Jian-hua Wang
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Chang-yu Han, Jin-jian Chen, Jian-hua Wang, Xiao-he Xia. 2D and 3D stability analysis of slurry trench in frictional/cohesive soil. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2013, 14(2): 94-100.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.A1200257     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2013/V14/I2/94

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