交通荷载作用下风积沙低路基动力响应分析  

Analysis on Dynamic Response of Aeolian Sand Low Subgrade under Traffic Load

作　　者：李埃军 段康进 张新元[3] 王以海 刘军勇[2] LI Aijun1, DUAN Kangjin2 , ZHANG Xinyuan3 , WANG Yihai3 , LIU Junyong2(1.Hohhot Transportation Construction Engineering Quality Supervision Station, Hohhot 010070, China; 2. CCCC First Xi＇an 710065, China; 3. Alxa league Transport Bureau, Bayanhaote 750306, Inner Mongolia, Chin)

机构地区：[1]呼和浩特市交通建设工程质量监督站,呼和浩特010070 [2]中交第一公路勘察设计研究院有限公司,西安710065 [3]阿拉善盟交通运输局,内蒙古巴彦浩特750306

出　　处：《路基工程》2018年第3期26-30,45,共6页Subgrade Engineering

基　　金：通古勒格淖尔至额尔克哈什哈(蒙甘界)公路建设管理办公室;内蒙古自治区交通建设工程质量监督局;中交第一公路勘察设计研究院科研项目:腾格里沙漠穿沙公路盐渍土路基稳定性技术研究(NJ-2016-33)

摘　　要：通过建立三维地基与路基模型,对交通荷载作用下风积沙换填地基与风积沙低路基动力响应进行了数值计算,分析了竖向位移、应力沿深度变化的规律以及动力响应的滞后效应,得到了动力时程曲线,确定了路基动力响应影响深度约为1.9 m。Through establishing the three-dimensional foundation and subgrade model, the numerical calculation for the dynamic response of aeolian sand replacing and filling foundation and aeolian sand low subgrade under traffic load is carried out; the variation rule of vertical displacement and stress along the depth and the lag effect of dynamic response are analyzed; the dynamic time-history curve is obtained; and the influence depth of subgrade dynamic response is about 1.9 m.

关 键 词：交通荷载 风积沙 低路基 动力响应 

分 类 号：U416.166[交通运输工程—道路与铁道工程]