单线铁路下承式栓焊简支钢桁梁桥 课程设计 目 录 第一章 设计资料 ·······································1 第一节 基本资料 ·················································· 1 第二节 设计内容设计内容 ········································ 1 第三节 设计要求 ·················································· 2 第二章 主桁杆件内力计算 ·································3 第一节 主力作用下主桁杆件内力计算 ··························· 3 第二节 横向风力作用下的主桁杆件附加内力计算 ···············