Numerical investigation into the failure of a micropile retaining wall

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• 作者：Pere C. Prat ; ^{pere.prat@upc.edu" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Numerical analysis ; FEM ; Ground failure ; Micropiles ; Retaining walls ; Back analysis
• 刊名：Computers and Geotechnics
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：81
• 期：Complete
• 页码：262-273
• 全文大小：6036 K

文摘

The paper presents a numerical investigation on the failure of a micropile wall that collapsed while excavating the adjacent ground. The main objectives are: to estimate the strength parameters of the ground; to perform a sensitivity analysis on the back slope height and to obtain the shape and position of the failure surface. Because of uncertainty of the original strength parameters, a simplified backanalysis using a range of cohesion/friction pairs has been used to estimate the most realistic strength parameters. The analysis shows that failure occurred because overestimation of strength and underestimation of loads.