铁路箱梁运架施工受力分析

以宁安线、青烟荣线城际铁路工程实例，结合运架梁过程中的多种施工机械，对预应力混凝土简支箱梁在施工阶段进行了分析和讨论．重点分析箱梁整体结构强度、抗裂等安全系数指标，箱梁受力分布特性，钢筋应力、裂缝等情况．

Mechanical Analysis of the Railway Box Beams in the Construction Stage

Based on the construction of Ning-An passenger special line and Qing-Yanrong passenger special line, the mechanical properties of PC box beam are analyzed and researched during construc- tion, combining with the construction equipment. It deeply analyzes the strength factor, the anti- crack safety coefficient, stress distribution, steel stress and concrete crack, etc. It provides the expe- rience as a reference for the similar engineering project.