铁道科学与工程学报2017，Vol.14Issue(2)：257-263,7.
简化地铁移动荷载引起的混凝土路面振动分析
Vibration analysis of concrete pavement caused by simplified Metro moving load
摘要
Abstract
The surface vibration induced by moving point load in concrete layers was investigated in this paper. First, the simplified model was built up, in which the ground was assumed to be composed of three layers. The first and second layers are concrete, and the third layer is half-space poroelastic soil. The rail was considered as an Euler-Bernoulli beam of negligible thickness located at the interface between the first and second concrete layer. The equation of poroelastic soil was decoupled by utilizing the double Fourier transformation and the displacement and stress expressions involving potential functions were given. According to boundary conditions, the system equation was obtained and solved by applying Cramer's rule and block matrix calculation method. Finally, the surface displacement was obtained using inverse Fourier transformation. The calculation results were validated and the thickness and shear modulus of concrete on the influence of surface displacement were analyzed.关键词
饱和土地基/混凝土层/梁/移动荷载/分块矩阵/位移Key words
poroelastic soil/concrete layer/beam/moving load/block matrix/displacement分类
建筑与水利引用本文复制引用
丁光亚,张伟,孙帆..简化地铁移动荷载引起的混凝土路面振动分析[J].铁道科学与工程学报,2017,14(2):257-263,7.基金项目
国家自然科学基金资助项目(51578425,51108349) （51578425,51108349）
浙江省自然科学基金资助项目(Y1100218) （Y1100218）
