摘要
针对我国客运专线广泛应用的CRTS Ⅰ型板式无砟轨道结构,建立简支梁桥上计算模型。为研究凸型挡台细部受力特性,将轨道结构模拟为实体,分析了凸型挡台纵向受力特性。计算结果表明,凸型挡台纵向力从台顶往下逐渐减小,沿线路纵向变化明显。温度荷载对凸型挡台纵向力影响较大,应作为设计和检算的控制因素。
Calculation model for simple-supported beam bridge is established based on CRTS Ⅰ slab ballastless track widely applied in passenger dedicated line in China.To study the detail stress characteristics of convex block,longitudinal stress characteristic of convex block is analyzed through full-scale simulation of track structure.It is indicated that longitudinal force of convex block gradually decreases down from top and changes largely along the line.Temperature load has large influence on the longitudinal force of convex block,so it shall be a control factor in design and verification.
出处
《路基工程》
2010年第4期28-30,共3页
Subgrade Engineering
基金
国家自然科学基金主任基金项目(50848015)
