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 ·································· 6 第三节 制动力作用下的主桁杆件附加内力计算 ····································· 8 第四节 疲劳内力计算 ······································································ 9 第五节 主桁杆件内力组合 ······························································· 11 第三章 主桁杆件截面设计 ······························································ 13 第一节 下弦杆截面设计 ·································································· 13 第二节 上弦杆截面设计 ······························...
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