高速铁路单孔轨道板长度与凸台长度比例研究  

Study on Proportion between Single-Pore Track Slab Length and Convex Block Length in High-speed Railway

作　　者：马凯[1] 

机构地区：[1]西南交通大学土木工程学院,成都610031

出　　处：《路基工程》2010年第5期50-53,共4页Subgrade Engineering

基　　金：国家自然科学基金项目(50848015)

摘　　要：为确定高速铁路单孔轨道板长度与凸台长度之间的合理比例,文中运用有限单元法建立单孔轨道板的实体模型,对轨道板分别施加纵向、横向和温度梯度三种荷载,对比分析各种不同比例关系下轨道板结构的受力情况,进而确定一个合理比值。结果表明,轨道板长度与凸台长度的比例保持在0.55～0.60为最好。In order to determine the rational proportion between single-pore track slab length and convex block length in high-speed railway,this paper establishes full-scale model of single-pore track slab using finite element method.Through applying longitudinal load,lateral load and temperature gradient on track slab,the stress of track slab under different ratios is compared and analyzed and thus a reasonable ratio is determined.It is shown that keeping track slab length and convex block length at 0.55 ～ 0.60 is the best.

关 键 词：单孔轨道板 凸台 有限单元法 

分 类 号：U213.242[交通运输工程—道路与铁道工程]