库区高墩大跨连续刚构桥设计与施工研究

发布时间：2018-11-12 14:56

【摘要】：改革开放以来,我国交通现代化进程日益加快,规划兴建了众多大型水利工程建设项目和桥梁工程建设项目,这些工程为改善地方交通起到了重要作用。然而一些偏远地区因自然条件恶劣,如水域难以跨越等原因仍处于交通不便状态,因此,研究跨库区、跨水域的深水桥梁的设计与施工具有重要的实践意义。本文依托雅砻江两河口水电站库区复建坝前跨库大桥专项工程,开展了对库区高墩大跨连续刚构桥的设计与施工研究。两河口跨库大桥位于两河口水电站水库内,是衔接两条复建县道的重要干线枢纽,在库区复建交通网络及库周交通网络中都有着举足轻重的作用。论文首先对高墩大跨连续刚构桥的国内外研究现状进行了分析,对两河口跨库大桥设计中遇到的典型库区水环境的影响问题进行了分析,对库区桥梁环境的特殊性、库区桥梁设计中应注意的问题进行了讨论。运用桥梁结构分析的有限元理论,对高墩大跨连续刚构桥设计中的静动力行为进行了分析,对墩身施工和连续主梁施工临时支架工艺技术方案等问题进行了研究,采用MIDAS/CIVIL 2012进行相应结构实体模型分析,设计了临时支撑方案。论文着重介绍了库区高墩大跨连续刚构桥的设计与施工方法,为其它相似工程提供借鉴。
[Abstract]:Since the reform and opening up, the process of traffic modernization in China has been speeding up day by day. Many large water conservancy projects and bridge construction projects have been planned and built. These projects have played an important role in improving local transportation. However, some remote areas are still in the state of traffic inconvenience because of the bad natural conditions, such as the difficulty of crossing the water area. Therefore, it is of great practical significance to study the design and construction of deep water bridges across the reservoir area and across the water area. In this paper, the design and construction of continuous rigid frame bridge with high piers and large spans in the reservoir area are studied on the basis of the special project of the large span bridge before rebuilding dam in the reservoir area of Lianghekou Hydropower Station of Yalong River. The Liangkou River Crossing Bridge is located in the reservoir of Lianghekou Hydropower Station. It is an important trunk link between the two restored county roads and plays an important role in the reconstruction traffic network and the traffic network around the reservoir area. In this paper, the current research situation of long-span continuous rigid frame bridge with high piers at home and abroad is analyzed, and the influence problems of water environment in the typical reservoir area in the design of Lianghekou Bridge are analyzed, and the particularity of bridge environment in the reservoir area is analyzed. The problems that should be paid attention to in the design of bridges in the reservoir area are discussed. Based on the finite element theory of bridge structure analysis, the static and dynamic behavior of long-span continuous rigid frame bridge with high piers is analyzed, and the technical scheme of temporary support for pier construction and continuous main beam construction is studied. MIDAS/CIVIL 2012 is used to analyze the corresponding structural entity model, and the temporary support scheme is designed. This paper mainly introduces the design and construction method of long span continuous rigid frame bridge with high piers in reservoir area, which provides reference for other similar projects.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U448.23;U445.4

【参考文献】