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水流冲击下益阳外环路基边坡三相耦合及可靠性分析
引用本文:李安帮,杨天娇,周冕,吴鹏飞,李志华,王述红,齐龙.水流冲击下益阳外环路基边坡三相耦合及可靠性分析[J].路基工程,2019,0(4):15-19.
作者姓名:李安帮  杨天娇  周冕  吴鹏飞  李志华  王述红  齐龙
作者单位:中建五局土木工程有限公司,湖南益阳,413000;东北大学资源与土木工程学院,沈阳,110819
基金项目:国家自然科学基金资助项目(51474050,U1602232);中央高校基本科研业务专项资金资助(N17010829);辽宁省自然科学基金项目(20170540304,20170520341)
摘    要:以益阳外环路路基边坡为例,运用COMSOL Multiphysics软件,对边坡在10 mm/h的水流冲击作用下48小时内的各项参数进行有限元分析,根据边坡各项参数随空间分布的差异性,将其以随机变量来表示,并选取边坡顶部、中部和底部三个位置的各项参数进行灵敏度分析,忽略灵敏度较小的参数的随机性,以达到简化计算的目的。最后分析边坡不同位置的可靠性随水流冲击时间的变化情况,找出了边坡的危险位置,为边坡的预警与加固提供依据。

关 键 词:水流冲击作用  COMSOL  不确定性  灵敏度  可靠性
收稿时间:2019-11-11

Three-phase Coupling in Subgrade Slope along Yiyang Outer Ring Road under Water Flow Impact and the Reliability Analysis
Abstract:The subgrade slope along Yiyang outer ring road was taken as an example to make finite element analysis with COMSOL Multiphysics software on the parameters of the slope under water flow impact at 10 mm/h for 48 hours. The difference with the spatial distribution between the parameters were depended and expressed by random variable to carry out sensitivity analysis on the parameters at the top, middle and bottom of the slope, wherein the randomness of the parameters with less sensitivity was ignored for the purpose of simplifying the calculation. Finally, how the reliability of each part of the slope changed with the impact time of water flow was analyzed so as to find out the dangerous position of the slope and provide basis of early-warning and reinforcement of the slope.
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