机场地基反应模量动态识别仿真研究  

Dynamic Identification Simulation of Foundational Response Modulus of Airport

作　　者：陈向明[1] 刘洪兵[1] 

机构地区：[1]西北工业大学力学与土木建筑学院,陕西西安710072

出　　处：《计算机仿真》2009年第7期54-57,共4页Computer Simulation

摘　　要：机场道面是由多块道面板连接在一起共同工作的,Kelvin粘弹性地基上有限尺寸矩形板系统为基础,建立了运动荷载作用下四边弹性支撑的道面板的运动方程,利用变分法、功互等定理等方法求得道面板系统的弯沉解析解。进而根据最小二乘方准则,采用Matlab编程拟合实测动挠度和理论动挠度,从而识别出地基反应模量K。实例计算表明所得结果具有较好的精度。研究结果可为机场道面的板厚设计、参数识别和质量评价等提供理论依据。Airport pavement consists of many pavement slabs working together. Based on the rectangle plate system on Kelvin viscoelastic foundation, the dynamic equations of the elastic boundary support plates of moving loads are established. By using the method of separation of variables and the reciprocal theorem of work, the analytical so- lution of the plate can be derived. According to the least square method, using Matlab programming, the foundational response modulus can be identified by fitting the testing deflection and the theoretical deflection. Numerical example indicates that the results in this paper are exact. It can provide valuable theoretical foundation for the design of plate thickness, parameters identification and pavement evaluation.

关 键 词：粘弹性地基 弹性支撑 动态识别 仿真研究 

分 类 号：U416.03[交通运输工程—道路与铁道工程]