瑞典圆弧法积分模型的边坡稳定性解析计算

发布时间：2018-02-11 18:02

本文关键词： 边坡稳定性积分模型解析计算　出处：《应用力学学报》2017年02期 　论文类型：期刊论文

【摘要】：以积分模型代替条分模型可以提高边坡稳定性系数的计算精度,参考坡脚圆和坡底圆的两类滑动面形式,通过水平和竖直积分得到瑞典圆弧法的边坡稳定性解析式,并与不同方法比较。结果表明:忽略条间力的水平积分模型的解要小于竖直积分解,得到更为保守的稳定性系数,是稳定性系数的下限解;通过数学归纳法得到了边坡水平积分模型的广义形式,匀质土层、异形边坡,成层土、含有稳定水位的边坡都可适用于水平积分方法;竖直积分模型逼近稳定性系数的上限解,应用时要注意稳定性系数的放大,避免不安全的评价。竖直积分和水平积分两种方法可分别界定稳定性系数的上下限,为合理选用边坡稳定性系数提供思路。
[Abstract]:The calculation accuracy of slope stability coefficient can be improved by using integral model instead of strip model. According to the two kinds of sliding surface forms of foot circle and bottom circle, the slope stability analytic formula of Swedish circular arc method is obtained by horizontal and vertical integration. The results show that the solution of the horizontal integral model which neglects the interbar force is smaller than that of the vertical integral, and the more conservative stability coefficient is obtained, which is the lower bound solution of the stability coefficient. The generalized form of horizontal integral model of slope is obtained by mathematical induction. The slope with stable water level can be applied to the horizontal integral method, and the vertical integral model approaches the upper bound solution of the stability coefficient. In application, attention should be paid to the amplification of the stability coefficient to avoid the unsafe evaluation. The vertical integral and horizontal integral can define the upper and lower limits of the stability coefficient respectively, which provides the train of thought for the rational selection of the slope stability coefficient.
【作者单位】：防灾科技学院防灾工程系;中国地震局工程力学研究所地震工程与工程振动重点实验室;中国兵器工业北方勘察设计研究院有限公司;
【基金】：河北省高等学校科学技术研究项目(ZC2016150) 中央高校基本科研业务费专项资金青年教师资助计划(ZY20150203)
【分类号】：TU43

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