计算边坡安全系数的坡向离心法

›› 2009, Vol. 30 ›› Issue (9): 2651-2654.

计算边坡安全系数的坡向离心法

王正中¹，牟声远¹，²，刘军³

1. 西北农林科技大学水工程安全与病害防治研究中心，陕西杨凌 712100； 2. 煤炭科学研究总院重庆研究院，重庆 400037；3. 郑州市建筑设计院，郑州 450052

收稿日期:2008-05-12 出版日期:2009-09-10 发布日期:2010-03-24
作者简介:王正中，男，1963年生，教授，博士生导师，从事水工结构工程学科教学与科研工作。
基金资助:
国家自然科学基金资助项目（No. 50779057）

Slope centrifugal method for calculating safety factor of slope stability

WANG Zheng-zhong¹, MU Sheng-yuan¹, ², LIU Jun³

1. Research Center of Water Eengineering Safety and Disaster Prevention, Northwest A&F University, Yangling 712100, China; 2. Chongqing Research Institute, China Coal Research Institute, Chongqing 400037, China; 3. Zhengzhou Architectural Design Institute, Zhengzhou 450052, China

Received:2008-05-12 Online:2009-09-10 Published:2010-03-24

摘要/Abstract

摘要：

边坡稳定分析方法发展最引人注目，它是经典土力学最早试图解决而至今仍未圆满解决的课题。在常用边坡分析方法的基础上，从边坡失稳机制出发，提出一种更方便的安全系数计算方法——坡向离心法。该法通过不断增大水平加速度，直至边坡失稳为止，依据水平加速度与重力加速度失稳影响机制求得安全系数。通过算例与传统极限平衡法和有限元强度折减法相比较，并对各物理参数进行敏感性分析。结果表明，坡向离心法在边坡工程稳定分析中的应用是切实可行的，其弹性模量和泊松比对该法所求安全系数影响不大。

关键词: 坡向离心法, 边坡稳定分析, 安全系数, 敏感性分析

Abstract:

Much attention has been paid to the development of the analysis method for slope stability, which is an unsolved problem in the classical soil mechanics till now. Based on the previous analysis methods and slope failure mechanism, a convenient approach, slope centrifugal method, is presented to calculate the safety factor of slope stability in the current work. In detail, the horizontal acceleration is applied on a slope and the value of the acceleration increases until that the slope failure happens. The safety factor can be obtained considering both of the centrifugal and the gravity on the failure slope. The comparisons between the presented method and the previous methods, e.g. the traditional limit equilibrium method and the finite element intensity discount method, is given by an example; and the sensitivity analysis of various physical parameters is given to show the validity of the presented method for analysis of slope failure. Results also show that the safety factor obtained by the presented method depends on the elasticity of the material in slope, slightly.

Key words: slope centrifugal method, slope stability analysis, safety factor, sensitivity analysis

中图分类号:

TU 413

王正中，牟声远，刘军. 计算边坡安全系数的坡向离心法[J]. , 2009, 30(9): 2651-2654.

WANG Zheng-zhong, MU Sheng-yuan, LIU Jun. Slope centrifugal method for calculating safety factor of slope stability[J]. , 2009, 30(9): 2651-2654.

参考文献

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