采用铅芯橡胶支座的斜跨拱桥抗震性能分析

英文篇名：Seismic performance analysis of single diagonal-span arch bridge with using lead-rubber-bearings
中文刊名：安徽建筑工业学院学报(自然科学版)
英文刊名：Journal of Anhui Institute of Architecture & Industry(Natural Science)
作者：曹新垒 ; 郝翠
英文作者：CAO Xin-lei ; Hao Cui(Anhui Communications Consulting & Design Institute ; Anhui Hefei 230088 ; China)
中文关键词：铅芯橡胶支座 ; 斜跨拱桥 ; 减隔震设计 ; 时程分析
英文关键词：lead-rubber-bearing ; single diagonal-span arch bridge ; aseismatic research ; time-history analysis
出版日期：2012-08-15
机构：安徽省交通规划设计研究院;
年：2012
期：04
出版单位：安徽建筑工业学院学报(自然科学版)

摘要

斜跨拱桥作为一种新兴的异型拱桥,由于其结构的特殊性和复杂性,其动力特性和抗震问题更为引起关注。采用减隔震技术能够显著改善结构的抗震性能,所以有必要对斜跨拱桥的减隔震问题进行分析研究。本文结合工程实际,建立了某斜跨拱桥的有限元模型,系统的分析了该桥的动力特性,研究了铅芯橡胶支座对自振特性的影响。依据最新桥梁抗震规范,在E2地震作用下使用非线性时程分析法进行分析。对隔震与非隔震两种模型进行抗震性能对比,结果表明在E2地震作用下,铅芯橡胶支座可以有效的减少斜跨拱桥的地震作用,显著的提高结构的抗震性能。
As the structure of the single diagonalspan arch bridge is particular,the dynamic characteristics and seismic problems attract more attention The seismic performance of structures can be improved significantly via seismic isolation.It is necessary to carry out considerable research on technology of seismic isolation about single diagonalspan arch bridges With practical engineering,based on special finite element model,the effect of dynamic property by LRB of single diagonal-span arch bridge is discussed.On account of existing seismic theory and according to new seismic code comparing seismic performance of two models with E2 earthquake load,the results showed that LRB can effectively reduce the earthquake effect of the single diagonalspan arch bridge,significantly improved the structural seismic performance.

引文

1阳治群.异型拱桥动力特性分析[D].大连理工大学硕士学位论文,2009.
    2李生智,王玮瑶,邬妙年.异型拱桥[M].北京:人民交通出版社,1996.
    3范立础,王志强.桥梁减隔震设计[M].北京:人民交通出版社,2001.
    4谢旭桥.梁结构地震响应分析与抗震设计[M].北京人民交通出版社,2006.
    5贾明晓,章小檀,等.桥梁延性与减隔震设计方法应用研究[J].公路工程,2008,28(4):73-77.
    6包绍伦,余培玉.欧洲桥梁抗震设计及计算方法[J].公路,2008,9:205-208.
    7JTGT B02-01-2008,公路桥梁抗震细则[S].北京:人民交通出版社,2008.