三跨无背索斜拉桥的动力特性分析  

Analysis on Dynamic Characteristics of Three-span Cable-stayed Bridge without Backstays

作　　者：杨敏[1] 欧家富 郑光辉[1] 

机构地区：[1]广东工业大学土木与交通工程学院,广东广州510006 [2]东莞市新远高速公路发展有限公司,广东东莞523120

出　　处：《城市道桥与防洪》2012年第7期116-118,12,共3页Urban Roads Bridges & Flood Control

摘　　要：湖南路大桥主桥为一座斜塔无背索斜拉桥,跨径组合为30 m+92 m+30 m,全长152 m。建立该桥空间有限元动力分析模型,重点研究该桥的自振频率和振型特征。通过与一座同类型方案桥的对比,总结出该桥动力特性及结构体系的主要特点,为后续同类桥梁的设计和相关研究提供借鉴。The main bridge of Hunanlu Bridge is an inclined-pylon cable-stayed bridge without backstays. The span combination is 30 m + 92 m + 30 m and its total length is 152 m. The spatial finite element dynamic analysis model of this bridge is set up to mainly study its natural vibration frequency and vibration character. Comparing with a same bridge scheme, the article sums up the dynamic characteristics of this bridge and the main characteristics of its structural system, which can provide the reference for the design and the relative study of the similar bridges.

关 键 词：无背索斜拉桥 有限元 动力特性 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]