三跨上承式简支公路钢桁架桥设计毕力业设计桥梁计算书【必威体育精装版】.docx

上承式简支公路钢桁架桥设计 PAGE \* MERGEFORMAT4 毕 业 论 文 二0一四年六月  三跨上承式简支公路钢桁架桥设计 专业：土木工程2班 姓名： 张思 指导教师：杨岗教授 交通物流工程学院 摘 要 通过对设计要求的理解以及相关资料的查询，全面了解钢桁架桥的相关知识，并根据设计相关资料最终选定上承式简支钢桁架桥。 设计的主要包括了根据相关地形条件进行了方案比选，确定方案后开始进行桥的设计，先进行主桁杆件的内力计算，其中包括考虑恒载和活载的主力、横向力、制动力等作用，接着进行杆件截面设计，主桁节点设计及检算，横纵梁的内力计算与强度验算，最后进行联结系的设计及检算。所有计算完成后还需要Midas civil建模，进行结构静力分析，结构变形检算。通过数据对比来确定设计是否符合先关要求。 关键字：钢桥；??计；模拟 Abstract By querying the understanding of the design requirements and relevant data, a comprehensive understanding of the relevant knowledge of the steel truss bridge, and the final selection based on design-related information on the Order of simply supported steel truss bridge. Design includes a scheme comparison carried out in accordance with the relevant terrain conditions, to determine the design of the bridge began after the program, the first for the main truss rod internal force calculation, including the dead load and live load considering the main, lateral force, braking force and so on, followed by the rod cross-section design, the main truss node design and check calculation, calculation of internal forces and transverse stringer strength checking, and finally joins the Department of design and seizure count. After the completion of all the calculations needed Midas civil modeling, structural static analysis, structural deformation detection count. By comparison of the data to determine whether the design meets the requirements first off. Keywords：steel bridge；design；simulation 目录  TOC \o 1-3 \h \z \u  HYPERLINK \l _Toc390234980 第1章绪论  PAGEREF _Toc390234980 \h 1  HYPERLINK \l _Toc390234981 1.1我国钢桥的发展  PAGEREF _Toc390234981 \h 1  HYPERLINK \l _Toc390234982 1.2钢桥的主要特点  PAGEREF _Toc390234982 \h 1  HYPERLINK \l _Toc390234983 1.3钢桥的主要类型  PAGEREF _Toc390234983 \h 1  HYPERLINK \l _Toc390234984 第2章方案比选与桥型数据  PAGEREF _Toc390234984 \h 2  HYPERLINK \l _Toc390234985 2.1 设计基本资料  PAGEREF _Toc390234985 \h 2  HYPERLINK \l _Toc390234986 2.2方案的比选  PAGEREF _T