THE STRUCTURE DESIGN AND CONSTRUCTION FEATURE OF CONCRETE INCLINED PYLON CABLE-STAYED BRIDGE WITH BACKSTAYS
The Banfu no.2 bridge, located in Zhongshan city, is under construction. It is a 102-meter-long inclined pylon cable-stayed bridge with backstays. This new type of bridge has a beautiful design, and the structure is unique, which is different from the conventional cable-stayed bridge in structure and mechanical property. As a result, this type of bridge has some particularity in structure design and construction. It is discussed in detail that the selection of pylon and girder section, structural style of pylon, and the relation between structure balance and obliquity of pylon. Furthermore, the mechanical property of structure and the construction technology of both main and side spans are analyzed, and the analysis results indicate that: First, the self weight of main span can be balanced by bottom stowage of side span, and when it reaches optimum state of structural internal force, the quantity of material is the least; Second, the side span adopts full framing construction method, but the main span adopts cantilever casting construction method, which not only makes structural mechanical behavior rational during construction, but also speeds up the construction process. Besides, there is further study of shear lag effect of main girder, temperature effect, and the intersection joints stress condition of main girder and pylon in the process of designing, which makes the Banfu no.2 bridge safe and economical.
cable-stayed bridge inclined pylon backstays design construction
De-Zeng Jiang Rong-Hui Wang Niu-Jing Ma
School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, P.R. China
国际会议
广州
英文
919-924
2009-11-28（万方平台首次上网日期，不代表论文的发表时间）