现代有轨电车基床结构设计方法研究

根据现代有轨电车运行的特点,参照《高速铁路设计规范》和《建筑结构荷载规范》,确定了现代有轨电车轮载冲击系数。基于实测资料,分析了基床表层动荷载分布形式,采用了基床表层动应力按三角形分布的方法。运用Boussinesq弹性理论公式和Odemark的模量与层厚当量假定,确定了路基不同深度处的动应力计算方法。

Research on Design Method of Modern Trams Roadbed Structure

According to running characteristics of modern trams, with reference to High-speed Rail Design Specification and Load Code for the Design of Building Structures, the wheel load impact coefficient of modern trams is confirmed.According to measured data, the load distribution of surface layer of subgrade bed is analyzed and the triangular distribution method of dynamic stress of surface layer of subgrade bed is applied.The Boussinesq elastic theory formula and Odemark modulus and depth of stratum equivalent assumption are adopted to confirm computing method of dynamic stress at different depths of subgrade.