虎门二桥节段拼装桥梁设计与实践

发布时间：2018-10-15 20:26

【摘要】：节段拼装是一项技术先进的施工方法,符合节能、环保、快速、高效的现代建设理念,能带来巨大的社会和经济效益,近些年来在国内逐渐得到运用和推广。本文在回顾和总结这种施工工法发展和国内外研究现状的基础上,以虎门二桥为工程背景,从工程优化设计的角度,对节段拼装桥梁进行了较为详细的分析和设计。首先在收集大量资料的基础上,通过工期、造价、施工难度等因素的比较,确定了该桥的结构形式、预制工法、拼装工法;随后明确了结构的构造尺寸、节段划分,并根据节段拼装桥梁的特殊性,针对节段拼装的接缝、预应力体系以及墩顶0#块进行了设计;接着总结节段拼装的计算公式和方法,对节段拼装桥梁的设计规范进行比选,对结构进行了静力设计计算,得到节段拼装结构的一些设计指标;最后结合现场实地走访,对该桥梁施工的关键技术和工艺要求做了阐述。通过以上设计比选、结构计算和分析,论证了该类结构的先进性和可行性。本文的工作研究成果可为其他预制节段拼装的连续箱梁设计提供参考。
[Abstract]:Segmental assembly is a technologically advanced construction method, which accords with the modern construction idea of energy saving, environmental protection, fast and high efficiency, and can bring huge social and economic benefits. In recent years, it has been gradually applied and popularized in our country. On the basis of reviewing and summing up the development of this construction method and the present research situation at home and abroad, taking the Humen second Bridge as the engineering background, this paper makes a detailed analysis and design of the segmental assembling bridge from the point of view of engineering optimization design. First of all, on the basis of collecting a large amount of data, through the comparison of the construction period, cost, construction difficulty and other factors, the structure form, prefabrication method and assembly method of the bridge are determined, and then the structural dimensions and segmental division of the structure are defined. According to the particularity of segmental assembling bridge, the joint, prestress system and pier top 0# block of segmental assembly are designed, and then the calculation formulas and methods of segmental assembly are summarized, and the design specifications of segmental assembling bridge are compared and selected. The static design calculation of the structure is carried out, and some design indexes of the segmental assembly structure are obtained. Finally, the key technology and technical requirements of the bridge construction are expounded in combination with the field visit. Through the above design comparison, structure calculation and analysis, the advanced nature and feasibility of this kind of structure are proved. The research results of this paper can be used as reference for the design of other prefabricated segmental continuous box girders.
【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】：U442.5

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