Stability analysis of shallow tunnels subjected to seepage with strength reduction theory

Abstract：Based on strength reduction theory, the stability numbers of shallow tunnels were investigated within the framework of upper and lower bound theorems of limit analysis. Stability solutions taking into account of water seepage were presented and compared with those without considering seepage. The comparisons indicate that the maximum difference does not exceed 3.7%, which proves the present method credible. The results show that stability numbers of shallow tunnels considering seepage are much less than those without considering seepage, and that the difference of stability numbers between considering seepage and without considering seepage increase with increasing the depth ratio. The stability numbers decrease with increasing permeability coefficient and groundwater depth. Seepage has significant effects on the stability numbers of shallow tunnels. 作者： Author： YANG Xiao-li  HUANG Fu 作者單位： School of Civil and Architectural Engineering, Central South University, Changsha 410075, China 期 刊： 中南大學學報（英文版）   EISCI Journal： JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY(ENGLISH EDITION) 年，卷(期)： 2009, 16(6) 分類號： U4 Keywords： strength reduction theory    seepage    permeability coefficient    stability numbers    機標分類號： TV1 TQ0 機標關鍵詞： theory    permeability coefficient    difference    significant    lower bound    depth    solutions    framework    results    account    exceed    upper    Based 基金項目： the Foundation for the Author of National Excellent Doctoral Dissertation of China，湖南省自然科學基金，West Traffic of Science and Technology of China Stability analysis of shallow tunnels subjected to seepage with strength reduction theory[期刊論文]  中南大學學報（英文版） --2009, 16(6)Based on strength reduction theory, the stability numbers of shallow tunnels were investigated within the framework of upper and lower bound theorems of limit analysis. Stability solutions taking into ...

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