桥梁支座水平静力约束方向抗震中的弹簧刚度取值方法对比研究

英文篇名：The comparison study on valuing method of the stiffness on the direction of horizontal static constraint of support in seismic finite element analysis on bridges
中文刊名：铁道科学与工程学报
英文刊名：Journal of Railway Science and Engineering
作者：罗如登 ; 叶梅新 ; 莫朝庆
英文作者：LUO Ru-deng ; YE Mei-xin ; MO Chao-qing(School of Civil and Architectural Engineering ; Central South University ; Changsha 410075 ; China)
中文关键词：抗震有限元分析 ; 支座 ; 约束 ; 刚度 ; 地震
英文关键词：seismic finite element analysis ; support ; constraint ; stiffness ; earthquake
出版日期：2008-04-28
机构：中南大学土木建筑学院,中南大学土木建筑学院,中南大学土木建筑学院湖南长沙410075,湖南长沙410075,湖南长沙410075
年：2008
期：02
出版单位：铁道科学与工程学报

摘要

以1座(75+135×2+75)m四跨连续梁双线铁路桥为例,对桥梁多级抗震有限元分析中支座水平静力约束方向上的弹簧刚度的取值问题进行了分析计算和对比研究,提出了改进的取值方法:多遇地震中,水平静力约束方向上的弹簧刚度可取为无穷大;在设计地震和罕遇地震时,水平静力约束方向上的弹簧刚度可按照水平静力自由方向上的弹簧刚度的取值方法进行取值。
Multi-level seismic finite element analysis and comparison on a four-span(75+135×2+75) m two-line continuous beam railway bridge were carried out to study the valuing method of the stiffness on the direction of horizontal static constraint of support.The improved valuing method is presented: in common earthquake,the stiffness on the direction of horizontal static constraint can be valued as infinite;in design and rare earthquakes,the stiffness on the direction of horizontal static constraint can be valued according to the valuing method of the stiffness on the direction of horizontal static freedom.

引文

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