摘要
以益阳外环路路基边坡为例,运用COMSOL Multiphysics软件,对边坡在10mm/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。
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 at10 mm/h for48 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.
作者
李安帮
杨天娇
周冕
吴鹏飞
李志华
王述红
齐龙
LI Anbang;YANG Tianjiao;ZHOU Mian;WU Pengfei;LI Zhihua;WANGShuhong;QI Long(CCFEB Civil Engineering Co.,Ltd.,Yiyang 413000,Hunan,China;College of Resources and Civil Engineering,Northeastern University,Shenyang 110819,China)
出处
《路基工程》
2019年第4期15-19,共5页
Subgrade Engineering
基金
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)
