大型跨海大桥非通航孔桥施工技术研究

发布时间：2018-03-09 05:23

本文选题：跨海大桥　切入点：非通航孔桥　出处：《大连理工大学》2015年硕士论文　论文类型：学位论文

【摘要】：跨越海湾、海峡等海域的跨海大桥,因其总体规模大,科技含量高,代表了尖端的桥梁技术。作为跨海大桥重要组成部分的非通航孔桥,为提高质量、安全、效率及效益等,已朝预制化、标准化、大型化、工厂化及装配化等趋势发展,施工工艺由以往的现浇施工逐步改进为工厂化整孔预制海上吊装的方案,以预制混凝土箱梁为例,其施工囊括了箱梁的预制及安装、附属设施等方面。目前,跨海大桥非通航孔桥施工技术相关研究滞后于实际,涉及具体问题缺乏可操作性。本研究以青岛胶州湾跨海大桥(又称青岛海湾大桥)非通航孔桥混凝土箱梁整孔预制吊装施工为背景,通过对非通航孔桥箱梁预制、场内转运、海上出运及安装等各阶段施工技术要点的分析总结,实现优化预制场设备配置及设计、改进箱梁场内转运技术及安装工艺等目标。实践证明,课题研究的项目施工工艺合理,解决了非通航孔桥大型混凝土箱梁整孔预制吊装各环节关键技术问题,形成了一套适合桥梁尤其是跨海大桥项目施工技术方案,为其他类似工程提供参考。
[Abstract]:Because of its large scale and high scientific and technological content, it represents the cutting-edge bridge technology. As an important part of the sea crossing bridge, the non-navigable bridge can improve the quality, safety, efficiency and benefit of the bridge. With the development of prefabrication, standardization, large scale, factory and assembly, the construction technology has been gradually improved from the former cast-in-place construction to the factory prefabricated offshore hoisting scheme, taking the precast concrete box girder as an example. The construction includes prefabrication and installation of box girder, ancillary facilities and so on. At present, the research on construction technology of non-navigable hole bridge of cross-sea bridge lags behind the actual situation. This study is based on the prefabricated hoisting construction of the concrete box girder of the non-navigable hole bridge of Qingdao Jiaozhou Bay Bridge (also known as the Qingdao Bay Bridge), through the prefabrication of the box girder of the non-navigable hole bridge and the transportation of the box girder in the field. The main points of construction technology in various stages, such as sea transportation and installation, are analyzed and summarized in order to optimize the equipment configuration and design of prefabricated yard, improve the transfer technology and installation technology in box girder yard, etc. The practice proves that the construction technology of the project studied in this paper is reasonable. The key technical problems of prefabricated hoisting of large concrete box girder of non-navigable bridge are solved, and a set of construction technology scheme suitable for bridge, especially sea crossing bridge project is formed, which provides reference for other similar projects.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U445.4

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