摘要
离散机构是近年来新提出的上限分析机构。针对分层多级复杂边坡的上限分析问题,提出复杂边坡中离散机构的构建方式,利用两种离散方法求解该机构的内外功率;基于强度折减法和二分法,提出安全系数的求解流程,并获得相应的临界滑动面。利用数个复杂边坡的算例对该方法进行验证,结果表明离散机构得到的安全系数与临界滑动面与已有结果符合较好。该机构能够用于复杂边坡的稳定性分析,过程简便且能保证计算精度。
Discretization mechanism is a kinematic analysis mechanism recently proposed.Aiming at stability issue of slopes with multi-layer and multi-stage called complex slopes,the discretization mechanism was applied.The generation process of the discretization mechanism in complex slops was presented,the internal and external powers were solved by two discretization patterns.Combined with the strength reduction method and the dichotomy,the safety factors of complex slopes could be calculated,and the critical slip surface was also obtained.The comparisons with several examples were conducted to validate the presented approach.The results showed that both the safety factors and the critical slip surfaces obtained herein were in good agreement with the previous ones.The mechanism could be used for stability analysis of complex slopes with simple process and accurate calculation results.
作者
侯超群
张亭亭
孙志彬
李见飞
HOU Chaoqun;ZHANG Tingting;SUN Zhibin;LI Jianfei(School of Automotive and Traffic Engineering,Hefei University of Technology,Hefei 230009,China)
出处
《工业建筑》
CSCD
北大核心
2018年第11期99-105,共7页
Industrial Construction
基金
国家自然科学基金项目(51408180)
关键词
边坡工程
复杂边坡
上限分析
临界滑动面
安全系数.
slope engineering
complex slopes
upper bound analysis
critical slip surface
safety factor
