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基于统一强度理论和应力状态的边坡稳定性分析

发表时间:2018-07-31  浏览量:1002  下载量:121
全部作者: 陈子玉,宋彦辉,严豪,陈康达
作者单位: 长安大学地质工程与测绘学院;长安大学西部矿产资源与地质工程教育部重点实验室
摘 要: 通过对边坡的实际应力状态分析,结合统一强度理论计算均质土体边坡的稳定性系数,在避免极限平衡法计算步骤繁琐的同时,可以直接借助公式计算出边坡的稳定性系数,同时采用统一强度理论框架下的岩土体强度参数,分析在不同统一强度理论参数b下边坡稳定性系数的变化特征,分析结果验证了在中间主应力影响下对土质边坡稳定性的提高作用。通过选取合适的边坡应力状态参数,计算出的边坡稳定性系数较传统的库伦-莫尔强度准则下的稳定性系数大。对边坡岩土体的材料强度进行了有效利用,为均质土质边坡稳定性系数的计算提供了一条新的路径。
关 键 词: 土木建筑工程其他学科;应力状态;统一强度理论;稳定性;均质边坡
Title: Analysis of the slope stability based on unified strength theory and stress state
Author: CHEN Ziyu, SONG Yanhui, YAN Hao, CHEN Kangda
Organization: School of Geological and Surveying & Mapping Engineering, Chang'an University; Key Laboratory of Western Mineral Resources and Geological Engineering, Ministry of Education
Abstract: By analyzing the actual stress state of the slope and combining the unified strength theory to calculate the stability coefficient of the homogeneous soil slope, which avoiding the tedious calculation step of the limit equilibrium method, the slope stability coefficient can be calculated directly with the formula. At the same time, by using the strength parameters of the rock and soil mass under the unified strength theory, the variation characteristics of slope stability coefficients under different unified strength theory parameters are analyzed, and the effect of intermediate principal stress on the stability of soil slopes is verified. By selecting the appropriate stress state parameters of the slope, the calculated slope stability coefficient is higher than the traditional Coulomb-Molar strength criterion, the material strength of rock and soil of slope is effectively utilized, which provides a new way for the calculation of the homogeneous soil slope stability coefficient.
Key words: other subjects of civil engineering; stress state; unified strength theory; stability; homogeneous slope
发表期数: 2018年7月第14期
引用格式: 陈子玉,宋彦辉,严豪,等. 基于统一强度理论和应力状态的边坡稳定性分析[J]. 中国科技论文在线精品论文,2018,11(14):1412-1419.
 
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