摘要
广东金马大桥主桥为双索面混凝土独塔斜拉桥与T形刚构的协作体系,其独特结构体系的成功实施引起了工程界的巨大关注.协作体系的动力特性主要包括体系的自振频率和主振型,它是协作体系结构动力分析的基础和前提.文中通过建立空间有限元模型,对金马大桥这种独特的协作体系结构进行了动力特征分析并给出了前20阶频率和前6阶的振型,同时研究了各种结构参数变化金马大桥协作体系结构的动力特性的影响,对其影响规律作了详细的讨论.
Jinma Bridge,as a result of successful design and construction,draws a significant attention from the bridge industry.It features an innovative structural system incorporating a large-span con- crete cable-stayed main structure cooperative with its adjacent rigid-framed spans.Dynamic characteristics of collaborated system mainly include natural vibration frequency and principal mode,which is the base and precondition of dynamic analysis for collaborated system.Jinma bridge,a unique supercooperature system structure,is taken for example,dynamic characteristics analysis and so frequencies and corresponding vibration modes are given by using space finite element model,at the same time ,different structural system and the effects of varieties of structural parameters on dynamic characteristics of collaborated system are calculated.Furthermore the effective rules are discussed in detail. Utility conclusions are drawn which supply theoretical basis on natural vibration analysis and earthquake-resistant design of collaborated system.
出处
《武汉理工大学学报（交通科学与工程版）》
2010年第5期962-965,共4页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
基金
中国博士后基金项目(批准号:20070411071)
大连市优秀青年科技人才基金项目(批准号:2008J23JH047)资助
关键词
协作体系
结构参数
动力特性
结构反应
collaborated system
structure parameters
dynamic characteristics
structural respondence
