移动车载下刚性路面板底动应变的分析与测量

把刚性路面建模为黏弹性地基上的板,用三次富立叶变换的分析方法分析了移动车载下刚性路面板底动态应变的响应.在此分析的基础上,建立了实测移动车载下的路面板底拉应变响应的方法,并用5个特殊的混凝土埋入式应变传感器在高速公路上建立了实测试验环境进行实测试验.对数值仿真结果和实测结果进行比较研究,结果表明两者是基本一致的.给出了切实可行的移动车载下路面动应变响应的分析和测量方法.研究对于预测路面使用寿命、疲劳分析具有重要的实用价值.

Measurement and Analysis of Dynamic Strain at the Bottom of Rigid Pavement Slab Subjected to Moving Vehicle Loads

The pavement system is modeled as a p Fourier transform is used to analyze the dynamic s vehicle loads. Based on the analysis result, an exp crete embedment strain sensors at a highway, and the result of the numerical simulation with that of late extent on a viscoelastic foundation, and the triple train response of rigid pavement subjected to moving erimental system was established using 5 special conthe experiments were carried on. Finally comparing the actual experiment, it indicates that they are basicly consistent. The paper presents a practical and feasible method for analyzing and measuring dynamic strain response of the pavement subjected to moving vehicle loads. The research has an important practical value for the forecast of the useful life and the fatigue analysis of pavement service.