永州九嶷大桥主桥结构设计与施工关键技术

Key technologies for structural design and construction of main bridge of Jiuyi bridge in Yongzhou

为了研究在建设条件受到限制的情况下,多塔矮塔斜拉桥的应用优势和结构性能,本文以九嶷大桥为研究背景,详细阐述主桥结构设计要点,对主桥结构进行有限元分析,并对其施工关键技术进行介绍。结果表明:采用合理的结构支承体系,桥梁各项技术指标在施工及运营阶段均安全可靠,并具有良好的结构性能,且成功地解决了航空、航运高程对桥梁的限制问题,可为类似工程设计提供参考。

In order to study the application advantages and structural performance of multi-tower short tower cable-stayed bridges under the restricted construction conditions, Jiuyi Bridge is taken as the research background and its main bridge structural design points are elaborated, the finite element analysis of main bridge structure is conducted, and the key construction technologies are introduced.The results show that, with a reasonable structural support system, all technical indicators of the bridge are safe and reliable during the construction and operation stages with good structural performance, and successfully solve the problem of aviation and shipping elevation restrictions on the bridge, which can provide reference for similar projects.