沿河路基挡墙土压力计算及数值模拟分析  

Earth Pressure Calculation and Numerical Simulation Analysis of Subgrade Abamurusalong the River

作　　者：李辉 Li Hui(Henan Provincial Communications Planning&Design Institute Co.,Ltd.,Zhengzhou 450000,China)

机构地区：[1]河南省交通规划设计研究院股份有限公司,郑州市450000

出　　处：《北方交通》2022年第8期59-63,67,共6页Northern Communications

摘　　要：结合工程实例,首先对沿河路基挡墙结构进行简化分析,然后针对路基排水系统沿墙土界面布置、沿填土底面布置和路基排水系统完全失效等三种不同情况,分别提出了其土压力计算方法,采用PLAXIS软件进行了数值模拟分析,结果表明:数值模拟分析结果更清楚地反映了路基沿河侧水压力的分布及变化情况,同时水位下降将导致挡墙稳定性随之降低。因此,在具体工程实际中,需要根据现场情况选择合适的防护类型,以保证沿河路基的稳定性满足要求。In combination with the engineering project,the structure of subgrade abamurus along the river is firstlysimplified and analyzed,and then the earth pressure calculation methods are respectively put forward for the three different situations of the subgrade drainage system layout along the wall soil interface,the layout along the filling bottom and the full effectiveness of the subgrade drainage system,and the numerical simulation analysis is carried out by using PLAXIS software. The results show that: the numerical simulation analysis results can more clearly reflect the distribution and change of the lateral water pressure of the subgrade along the river,and meanwhile the decrease of the water level will lead to the decrease of abamurus stability. Therefore,in the actual project,it is necessary to select the appropriate protection type according to the site conditions to ensure that the stability of the subgrade along the river meets the requirements.

关 键 词：沿河路基 挡墙 土压力 数值模拟分析 

分 类 号：U417.11[交通运输工程—道路与铁道工程]