Stability of active trapdoors in axisymmetry

作     者：Suraparb Keawsawasvong Jim Shiau 

作者机构：Department of Civil EngineeringThammasat School of EngineeringThammasat UniversityPathumthani 12120Thailand School of Civil Engineering and SurveyingUniversity of Southern QueenslandQLD 4350Australia 

出 版 物：《Underground Space》 (地下空间（英文）)

年 卷 期：2022年第7卷第1期

页      面：50-57页

核心收录：

学科分类：081406[工学-桥梁与隧道工程] 08[工学] 0818[工学-地质资源与地质工程] 0815[工学-水利工程] 0813[工学-建筑学] 0814[工学-土木工程] 082301[工学-道路与铁道工程] 0823[工学-交通运输工程] 

主　　题：Numerical analysis Axisymmetry Stability Trapdoor Active failure 

摘      要：Trapdoor stability has been widely studied by many researchers in the field of tunneling engineering.A general question being fre-quently asked is that why most sinkholes have a near-perfect circular shape on the ground *** could be possibly explained by the current numerical study using finite element limit analysis under axisymmetric condition,where upper and lower bound solutions of active circular trapdoors are *** failure study of sinkholes and the associated failure mechanisms in this paper are for non-homogeneous clay with a linear increase of strength with depth under various cover depth ratios and dimensionless strength gra-dients.A design equation for predicting the stability solutions is also developed based on the novel three dimensional solutions using axisymmetry.