Stability numbers for an unsupported vertical circular excavation in c-? soil

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• 作者：Jyant Kumar ; ^{jkumar@civil.iisc.ernet.in} ; Debarghya Chakraborty ^{debarghya@civil.iisc.ernet.in}
• 关键词：Axisymmetric problems ; Excavation ; Failure ; Limit analysis ; Plasticity
• 刊名：Computers and Geotechnics
• 出版年：2012
• 出版时间：January 2012
• 年：2012
• 卷：39
• 期：Complete
• 页码：79-84
• 全文大小：871 K

文摘

By using an axisymmetric lower bound finite element limit analysis formulation, the stability numbers (¦ÃH/c) for an unsupported vertical circular excavation in a cohesive-frictional soil have been generated. The numerical results are obtained for values of normalized excavation height (H/b) and friction angle (?) greater than those considered previously in the literature. The results compare well with those available in literature. The stability numbers presented in this note would be beneficial from a design point of view.