Water Science and Engineering 2008, 1(3) 65-72  DOI:   10.3882/j.issn.1674-2370.2008.03.007   ISSN: 1674-2370 CN: 32-1785/TV

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Keywords
multiple slide planes
anti-slide stability
mechanism of sliding
partial coefficient finite difference method
Authors
Xu-hua REN
Jia-qing SHU
Neng-hui BEN
Hong-yun REN
PubMed
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Stability analysis of concrete gravity dam on complicated foundation with multiple slide planes

Xu-hua REN*1, Jia-qing SHU1, Neng-hui BEN2, Hong-yun REN1

1. College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, P. R. China
2. Shanghai Harbor Quality Control & Testing Co., Ltd., Shanghai 200032, P. R. China

Abstract

A key problem in gravity dam design is providing enough stability to prevent slide, and the difficulty increases if there are several weak structural planes in the dam foundation. Overload and material weakening were taken into account, and a finite difference strength reserve method with partial safety factors based on the reliability method was developed and used to study the anti-slide stability of a concrete gravity dam on a complicated foundation with multiple slide planes. Possible slide paths were obtained, and the stability of the foundation with possible failure planes was evaluated through analysis of the stress distribution characteristics. The results reveal the mechanism and process of sliding due to weak structural planes and their deformations, and provide a reference for anti-slide stability analysis of gravity dams in complicated geological conditions.

Keywords multiple slide planes   anti-slide stability   mechanism of sliding   partial coefficient finite difference method  
Received 2008-02-28 Revised 2008-08-07 Online:  
DOI: 10.3882/j.issn.1674-2370.2008.03.007
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Corresponding Authors: Xu-hua REN
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