客运专线连续梁拱桥细部应力及车桥动力分析  

Detail Stress Analysis and Vehicle/Bridge Dynamic Analysis of a Continuous Beam Arch Bridge on PDL

作　　者：张楠[1] 张田[1] 杜宪亭[1] 杜士杰 

机构地区：[1]北京交通大学,北京100044 [2]中铁工程设计咨询集团有限公司,北京100055

出　　处：《铁道标准设计》2011年第B12期75-80,共6页Railway Standard Design

摘　　要：针对跨度(74.9+148+128+148+74.9)m连续梁拱桥进行了拱梁相交处复杂应力区及桥梁中跨跨中处受拉区的细部应力计算,证明了拱梁相交处拉应力不超限,中跨跨中全截面受压。仿真分析了桥梁在高速列车通过时的车桥动力响应,计算结果表明,车辆和桥梁各项动力指标均满足行车安全性要求。Detail stress analysis was carried out for a continuous beam arch bridge,with spans of（74.9＋148＋128＋148＋74.9）m.Results validated that the tension stresses at the arch-beam joint were below the threshold values,the mid section of mid span was in full compression.And the dynamic responses when the high-speed train transversing the bridge was simulated,it concluded from the results that all dynamic indices of vehicle and bridge satisfied the running safety requirements.

关 键 词：铁路桥 连续梁拱桥 细部应力分析 车桥动力分析 

分 类 号：U238[交通运输工程—道路与铁道工程] U448.216[建筑科学—桥梁与隧道工程]