某多跨刚架系杆拱梁组合桥施工过程加载顺序分析(任务书,开题报告,外文翻译,论文14000字)
摘要
本论文以漳州市东环城路马洲大桥为依托，对刚架系杆拱桥的施工技术进行研究。马洲大桥为35m+100m+150m+100m+35m=420m五跨连续拱桥，结构体系为刚架系杆拱梁组合桥，，拱起到主要的承载能力，通过吊杆主梁将节间荷载传递给拱肋，之后由拱脚将力传递到基础。论文通过数据模型的建立对桥梁的施工阶段进行分析，并对系杆吊杆张拉进行了分析，对马洲大桥的建设有一定指导意义。
本文的主要工作及结论如下：
1 详细的叙述了工程背景、自然条件、技术标准、桥型布置，结构设置、施工方案和项目重难点。
2 梳理了系杆拱桥的发展历史，分析了系杆拱桥的结构特点。
3 建立了马洲大桥的MIDAS模型，对马洲大桥的结构受力进行了计算。
4 探讨了吊杆索力调整的主要方法，并对马洲大桥的系杆吊杆张拉力进行了计算。
5 对马洲大桥的各施工阶段和成桥状态进行了分析，发现了桥面铺装阶段受力最为不利。同时对对桥梁设计进行了验证，桥梁受力符合安全要求。
关键词：刚架拱桥；有限元分析；施工顺序；吊杆索力
Abstract
Based on Mazhou Bridge of Donghuancheng Road in Zhangzhou City, this paper studies the construction technology of rigid frame tied arch bridge. Mazhou Bridge is a five-span continuous arch bridge with 35 m+100 m+150 m+100 m+35 m=420 M. The structure system is a rigid frame tied Arch-Girder composite bridge. The arch plays the main bearing capacity. The load between nodes is transmitted to the arch ribs through the main beam of the suspender, and then the force is transferred to the foundation by the arch foot. In this paper, the construction stage of the bridge is analyzed by establishing the data model, and the tension of the tied rod and suspender is analyzed, which has certain guiding significance for the construction of Mazhou Bridge.
The main work and conclusions of this paper are as follows:
1.This paper describes in detail the engineering background, natural conditions, technical standards, bridge layout, structural settings, construction schemes and key and difficult points of the project.
2.This paper combs the development history of tied arch bridge, and analyses the structural characteristics of tied arch bridge.
3.In this paper, the MIDAS model of Mazhou Bridge is established, and the structural stress of Mazhou Bridge is calculated.
4.In this paper, the main methods of adjusting suspender cable force are discussed, and the tension force of tied suspender of Mazhou Bridge is calculated.
5.In this paper, the construction stages and completion status of Mazhou Bridge are analyzed, and the most disadvantageous force is found in the deck pavement stage. At the same time, the design of the bridge is verified, and the force of the bridge meets the safety requirements.
Key Words：Rigid Frame Arch Bridge; Finite Element Analysis; Construction Sequence; Suspender Cable Force
目录
第一章绪论 1
1.1 系杆拱桥发展 1
1.2 系杆拱桥特点 2
1.3 国内外研究现状 2
1.4 本文研究内容 3
第二章系杆拱桥的施工 4
2.1 项目概况 4
2.1.1 技术标准 5
2.1.2 桥型布置 5
2.1.3 结构参数 6
2.2 常规系杆拱桥的施工方法 8
2.3 本桥的施工顺序及方法 9
2.4 项目重、难点 10
第三章系杆拱桥施工过程有限元建模与分析 11
3.1 有限元结构模型建立 11
3.1.1 主要计算参数选取 11
3.1.2 边界条件的设置 11
3.1.3 MIDAS有限元模型 11
3.1.4 施工阶段的划分 13
3.2 结构性能分析 14
3.2.1 施工阶段分析 14
3.2.2 成桥内力分析 16
3.2.3 温度荷载分析 18
3.2.4 活载分析 19
第四章水平系杆及吊杆索力调整及分析 21
4.1 系杆及吊杆张拉力的调整方法 21
4.2系杆及吊杆张拉力的结果 21
第五章结论与展望 24
5.1 结论 24
5.2 展望 24
参考文献 26
致谢 27
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