桥塔倾角对斜独塔斜拉桥动力特性及抗震性能的影响分析  

Analysis for Influences of Dip Angle of Bridge Tower on Dynamic Characteristics and Seismic Properties of Inclined Tower Cable-stayed Bridges

作　　者：王文龙[1] 姜基建[1] 

机构地区：[1]贵州省交通规划勘察设计研究院股份有限公司,贵阳550081

出　　处：《公路交通技术》2015年第2期78-81,共4页Technology of Highway and Transport

摘　　要：斜独塔斜拉桥桥塔倾斜角度对结构内力及构件稳定性的影响研究已经比较成熟,但其对结构动力特性及抗震性能影响的研究还较少。以某斜独塔斜拉桥为工程背景,分别建立桥塔倾角为74°、82°、90°时的全桥三维有限元模型,分析结构的动力特性和结构在地震作用下的响应,评价桥塔倾角对结构动力特性及抗震性能的影响。The researches on influences of dip angle of inclined tower cable -stayed bridges on internal force of structures and stability of members have been mature, but the researches on dynamic characteristics and seismic properties of structures are fewer.With some inclined tower cable -stayed bridge as project background,this paper establishes three -dimensional finite element models of the whole bridges at 74°,82°and 90°dip angles of bridge tower,respectively to analyze dynamic characteristics of structures and responses of structures under the effect of earthquakes and evaluate influences of dig angle of bridge tower on dynamic characteristics and seismic properties of structures.

关 键 词：斜独塔斜拉桥 倾角 动力特性 地震响应 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]