自锚式斜拉-悬吊协作体系桥的设计研究  

Research on Design of Self-anchored Cable-stayed Suspension Bridge

作　　者：张哲[1] 韩立中[1] 万其柏[1] 

机构地区：[1]大连理工大学桥梁工程研究所,辽宁大连116024

出　　处：《公路交通科技》2010年第6期46-51,71,共7页Journal of Highway and Transportation Research and Development

基　　金：交通部西部交通建设科技资助项目(200631882350)

摘　　要：针对大连湾航道面临软土地基、强台风、深水基础等不良的自然条件,在总结以往地锚式斜拉-悬吊协作体系桥特点的基础上,提出自锚斜拉-悬吊协作体系桥。以主跨800 m的大连跨海大桥主航道桥为工程背景,详细介绍了自锚式斜拉-悬吊协作体系的方案设计、构造特点,并就结构的静动力特性、施工步骤、经济性能以及运营阶段悬吊部分端吊索的疲劳问题和施工阶段结构的抗风稳定性进行了深入的分析研究,通过与悬索桥等其他结构体系进行对比分析表明,只要结构合理布局、并结合诸如适当设置辅助墩、在悬吊部分吊索与斜拉桥索适当交叉等一些措施,自锚式斜拉-悬吊协作体系桥具有优良的力学性能,完全能胜任深海、软土地基的建设。The self-anchored cable-stayed suspension bridge was put forward based on analyzing the characteristics of earth-anchored cable-stayed suspension bridge in view of the bad natural conditions such as the soft foundation,the violent typhoon,and the deep-watered foundation which the Dalian harbor route faced with.For the main channel bridge of Dalian sea-crossing bridge with 800 m main span,the conceptual design and the structure were introduced;traits of the static and dynamic mechanics,erecting procedure,economic performance and fatigue of hanger cables at the connecting zone of both cable-stayed bridge and suspension bridge as well as the wind-resistant stability at the construction stage were all researched.Compared with suspension bridge and other structures,the result shows that the rational layout together with some measures such as auxiliary pier and the appropriate crossing of stay cables and hanger cables could make self-anchored cable-stayed suspension bridge with excellent mechanical properties and be fully suitable for deep sea and soft ground construction.

关 键 词：桥梁工程 斜拉-悬吊桥 协作体系 抗风稳定性 

分 类 号：U448.25[建筑科学—桥梁与隧道工程]