凤凰二桥施工仿真分析

发布时间：2018-05-17 12:06

本文选题：施工仿真分析 + 上承式混凝土葵型拱桥　；参考：《华南理工大学》2015年硕士论文

【摘要】：广州市凤凰二桥(40+4×56+40)m为上承式混凝土葵花形拱桥,采用高强预应力钢绞线平衡拱桥水平推力。凤凰二桥设计采用葵型拱桥,其桥型轻盈,结构新颖,具有较高的造型特色和美学价值。作为一种新桥型,凤凰二桥施工阶段具有结构内力分布复杂,施工程序多,施工难度大等特点。为确保工程建设安全、经济、顺利地进行,有必要针对凤凰二桥进行施工全过程的仿真分析以了解结构在施工阶段的力学特性,同时研究施工过程中的一系列问题,并根据工程建造实际情况优化施工顺序。对结构施工阶段进行仿真分析是保证结构施工安全和变形控制的重要内容。本文即以在建的广州市凤凰二桥为工程背景,对其施工过程进行仿真分析。结合凤凰二桥的设计施工过程,采用MIDAC/CIVIL软件建立凤凰二桥支架法现浇混凝土主拱的仿真模型,对支架法现浇方案进行验算和分析,计算各个工况下的主拱沉降和主拱应力,获得相关理论数据。并对凤凰二桥拱架落架施工顺序,预应力系杆张拉施工顺序进行优化分析。本文研究成果可供同类型桥梁施工、监控及设计提供参考。
[Abstract]:Phoenix No.2 Bridge in Guangzhou City is an overbearing concrete sunflower arch bridge with 40 4 脳 56 40 m. The horizontal thrust of the arch bridge is balanced by high strength prestressed steel strands. Fenghuang second Bridge is designed with sunflower arch bridge. Its bridge type is light and its structure is novel. It has high styling characteristics and aesthetic value. As a new type of bridge, the construction stage of Phoenix second Bridge is characterized by complex distribution of structural internal forces, more construction procedures and construction difficulties. In order to ensure the safe, economical and smooth construction of the project, it is necessary to carry out the simulation analysis of the whole construction process for Phoenix second Bridge in order to understand the mechanical characteristics of the structure in the construction stage, and at the same time to study a series of problems in the construction process. The construction sequence is optimized according to the actual construction conditions. Simulation analysis of structure construction stage is an important content to ensure structural construction safety and deformation control. In this paper, the construction process of Phoenix second Bridge in Guangzhou is simulated and analyzed. Combined with the design and construction process of Phoenix second Bridge, the simulation model of in-situ concrete main arch of support method of Phoenix second Bridge is established by using MIDAC/CIVIL software. The in-situ casting scheme of support method is checked and analyzed, and the settlement and stress of main arch under various working conditions are calculated. Obtain relevant theoretical data. The construction sequence of the arch frame fall frame and the construction sequence of the prestressed tie bar are optimized and analyzed. The research results of this paper can be used as reference for the construction, monitoring and design of the same type of bridges.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U445.4

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