上承式梁拱组合钢结构桥梁（田安大桥）施工研究
发布时间：2019-03-02 18:46
【摘要】：钢结构桥梁具有跨度大、抗扭刚度大、强度高、自重轻、预制加工方便、施工周期短、整体性好、外型简洁美观、对外部环境影响小等优点。相对于混凝土桥梁,钢结构桥梁能减少上部结构自重,获得更大的桥下净空。随着交通事业的发展,钢结构桥梁在桥梁建设中将得到广泛的推广与应用。本文就福建省泉州市田安大桥上承式梁拱组合钢结构桥梁施工工艺做了分析研究。大跨度上承式梁拱组合钢结构具有跨度大、主梁施工悬臂很长,结构刚度较小、变形较大的的特点。当桥位处风况复杂,施工期间可能会遭遇到台风等风险较大的严苛施工条件下,采用桥梁构件几何控制法进行控制,控制较为复杂。还由于该桥位于晋江,主桥钢构件吊装施工时受潮汐影响较大,钢构件设计吨位较大,使其吊装施工难度较大。为了满足吊装质量,控制钢构件标高、线形等技术要求,本课题研究了大跨度、长悬臂梁拱组合钢结构吊装及其构件安装施工的关键技术和关键工艺,用以积累施工设计经验,提升科技创新能力。通过总结该施工工艺为指导今后类似工程施工提供了有益帮助。
[Abstract]:The steel structure bridge has the advantages of large span, high torsional stiffness, high strength, light weight, convenient prefabrication, short construction period, good integrity, simple and beautiful appearance and little influence on the external environment. Compared with concrete bridge, the steel structure bridge can reduce the self-weight of the superstructure and get more clearance under the bridge. With the development of transportation, steel bridge will be widely used in bridge construction. In this paper, the construction technology of beam-arch composite steel structure bridge of Tianan Bridge in Quanzhou City, Fujian Province is analyzed and studied. The long-span upper-supported beam-arch composite steel structure has the characteristics of long span, long cantilever, small stiffness and large deformation in the construction of the main beam. When the wind condition at the bridge location is complex and the severe construction conditions, such as typhoon, may be encountered during construction, the geometric control method of bridge members is adopted to control the bridge, which is more complicated. Because the bridge is located in Jinjiang River, the steel components of the main bridge are greatly affected by the tide and the design tonnage of the steel members is larger, which makes the hoisting construction more difficult. In order to meet the technical requirements of lifting quality, controlling the elevation and alignment of steel components, the key technology and key technology of hoisting and installation of long-span and long-cantilever beam-arch composite steel structure are studied in this paper, in order to accumulate the experience of construction design. To improve the ability of scientific and technological innovation. It is helpful to guide similar engineering construction in the future by summarizing the construction technology.
【学位授予单位】：华侨大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U445.4
[Abstract]:The steel structure bridge has the advantages of large span, high torsional stiffness, high strength, light weight, convenient prefabrication, short construction period, good integrity, simple and beautiful appearance and little influence on the external environment. Compared with concrete bridge, the steel structure bridge can reduce the self-weight of the superstructure and get more clearance under the bridge. With the development of transportation, steel bridge will be widely used in bridge construction. In this paper, the construction technology of beam-arch composite steel structure bridge of Tianan Bridge in Quanzhou City, Fujian Province is analyzed and studied. The long-span upper-supported beam-arch composite steel structure has the characteristics of long span, long cantilever, small stiffness and large deformation in the construction of the main beam. When the wind condition at the bridge location is complex and the severe construction conditions, such as typhoon, may be encountered during construction, the geometric control method of bridge members is adopted to control the bridge, which is more complicated. Because the bridge is located in Jinjiang River, the steel components of the main bridge are greatly affected by the tide and the design tonnage of the steel members is larger, which makes the hoisting construction more difficult. In order to meet the technical requirements of lifting quality, controlling the elevation and alignment of steel components, the key technology and key technology of hoisting and installation of long-span and long-cantilever beam-arch composite steel structure are studied in this paper, in order to accumulate the experience of construction design. To improve the ability of scientific and technological innovation. It is helpful to guide similar engineering construction in the future by summarizing the construction technology.
【学位授予单位】：华侨大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U445.4
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