Catastrophe of Base Stability Under Strip Foundation

Journal of South China University of Technology (Natural Science Edition) ›› 2005, Vol. 33 ›› Issue (11): 85-89.

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Catastrophe of Base Stability Under Strip Foundation

Wu Yi Fang Ying-guang

College of Architecture and Civil Engineering,South China Univ.of Tech.,Guangzhou 510640,Guangdong,China

Received:2005-01-20 Online:2005-11-25 Published:2005-11-25
Contact: 吴艺(1975-)，男，博士生，主要从事地下结构研究 E-mail:W-em@163.com
About author:吴艺(1975-)，男，博士生，主要从事地下结构研究
Supported by:
广东省自然科学基金资助项目(010054)

Abstract

Abstract:

In order to correctly describe and explain the sudden failure of a base in stability losing,the stability of the strip foundation on clay base is analyzed by using the theory of cusp-catastrophe model.The efects of the wea-kening function of clay,the base parameters,the ground overload and the second-order effect of displacement,etc.on the base stability and its catastrophe are discussed,with the catastrophe and failure conditions being finally pro-posed.Analytical results show that the catastrophe theory fairly well explains the objective phenomenon of sudden stability losing and the failure of a base,and that the ground overload,the soil density and the second-order efect of displacement are advantageous of the base stability

Key words: strip foundation, base, stab ility, ultimate bearing capacity, catastrophe

Wu Yi Fang Ying-guang. Catastrophe of Base Stability Under Strip Foundation[J]. Journal of South China University of Technology (Natural Science Edition), 2005, 33(11): 85-89.

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Catastrophe of Base Stability Under Strip Foundation

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