交通荷载下斜坡加筋路堤动力特性研究  

Study on Dynamic Characteristics of Slantwise Geosynthetic Reinforced Embankment under Traffic Load

作　　者：罗烈日[1,2] 郑俊杰[2] 

机构地区：[1]北京城建勘测设计研究院有限责任公司,北京100101 [2]华中科技大学土木工程与力学学院,湖北武汉430074

出　　处：《郑州大学学报（工学版）》2015年第4期72-76,共5页Journal of Zhengzhou University（Engineering Science）

基　　金：国家自然科学基金资助项目(51278216)

摘　　要：交通荷载作用下斜坡加筋路堤稳定性和变形特性一直是人们普遍关注的问题.采用数值模拟方法,在路堤顶面施加均布循环荷载,分析了交通荷载作用下路堤的动力特性.最后,对交通循环荷载的振幅、频率以及行车间隔进行参数分析.结果表明:交通荷载作用下,路堤顶面沉降随着循环次数的增加而增大,但增大的幅度逐渐变小,直至趋于稳定;交通荷载振幅、频率越大,行车间隔越短,路堤顶面最终沉降越大.The deformation characteristics and overall stability of high embankment under traffic load have been widely studied in recent years. Based on numerical simulation method,the response of embankment under dynamic uniform loads acting on the embankment surface is studied. Finally,the impacts of traffic loads＇ amplitude,frequency and running interval on the embankment response are analyzed. According to the results,the settlements of embankment surface under dynamic traffic loads grow with the cycle index,but the increase percentage of deformation diminishes gradually to a stable value. The maximum settlement of embankment surface increases with the increment of traffic load＇s amplitude,frequency and the decrement of running interval.

关 键 词：加筋路堤 动力特性 交通荷载 稳定性 变形 

分 类 号：U416.1[交通运输工程—道路与铁道工程]