摘要
无背索斜拉桥因其结构合理、造型优美,逐渐成为城市桥梁中的新宠。其中斜拉索起到实现主梁和索塔间荷载传递并将结构联结成整体的重要作用,因此索的张拉施工尤为关键。通过分析夏驾河步行桥结构形式的特点,指出传统张拉装置在该桥施工过程中可能遇到的问题,提出了一套完整的索力张拉装置,详细介绍了各组成部分的作用,总结了该张拉装置在现场施工中表现出的优点,为今后类似曲梁式斜拉桥的拉索张拉提供了借鉴和参考。
Cable-stayed bridge without backstage had gradually become the new darling among urban bridges in view of its reasonable structure and elegant mold. Tension of the cables in this kind of bridge was of great significance as they played an important role in the load transfer and combination between main beam and tower. Based on analysis of structural characteristics of Xiajia River pedestrian bridge,some problems in the construction of this bridge were pointed out. In this paper,a complete set of stretch-draw device was brought up and the functions of each elements ware also introduced as well as its advantages in site construction were summarized,which could provide some reference for the tension of cables in structural system like curved-girder integral cable-stayed bridge.
出处
《工程质量》
2015年第9期47-50,共4页
Construction Quality
基金
2014年度江苏省建设系统科技项目(2014ZD84)
关键词
无背索斜拉桥
曲梁式斜拉桥
桥梁施工
张拉装置
cable-stayed bridge without backstage
curved-girder integral cable-stayed bridge
bridge construction
stretch-draw device
