重载作用对混凝土路面板的弯沉及应力分析  

Overloading Effect on Concrete Pavement Deflection and Stress Analysis

作　　者：辛勤[1] 孙吉书[1] 任晓军 张小冉[1] XIN Qin SUN Jishu REN Xiaojun ZHANG Xiaoran(School of Civil Engineering, Hebei University of Technology, Tianjin 300401, P. R. China Tianjin Railway Technical and Vocational College, Tianjin 300240, P. R. China)

机构地区：[1]河北工业大学土木工程学院,天津300401 [2]天津铁道职业技术学校,天津300240

出　　处：《重庆交通大学学报（自然科学版）》2016年第6期30-33,共4页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：河北省高等学校科学研究青年基金项目(Q2012156)

摘　　要：运用ANSYS有限元软件建立路面结构三维实体模型,用正弦荷载模拟车辆随机荷载运动,分别就路面结构竖向位移及应力变化进行重载作用模拟分析;并分析超载率与脱空尺寸的影响。研究表明:动荷载作用下面板产生的弯沉值及板底最大拉应力值随着水泥混凝土路面板板底脱空区的面积增大而增大;超载率越大且脱空面积越大,板的竖向位移和拉应力增幅越大。ANSYS software was used to establish 3D entity model of the pavement structure,and sine load was used to simulate the random load movement of the vehicle. The vertical displacement and stress change of the pavement structure under overloading were simulated and analyzed respectively. And then the effect of overloading rate and cavity size were also analyzed. The conclusion shows that： in the case of dynamic load,the panel deflection value and the bottom maximum tensile stress increase with the increment of the cavity size of the bottom plate board of concrete pavement; moreover,with the higher of overload rate and the larger of void area,the increase of the vertical deflection and tensile stress is greater.

关 键 词：道路工程 动荷载 力学响应 有限元分析 

分 类 号：U426.216[交通运输工程—道路与铁道工程]