铁道科学与工程学报2016，Vol.13Issue(11)：2181-2188,8.
HDR在曲线箱梁桥中的适用性研究
Applicability study of high damping rubber bearing in curved box girder
摘要
Abstract
Long span steel box girder is usually connected with small span concrete box girder in urban viaduct, but there are large differences in static and dynamic characteristics between them because of the difference in ri-gidity and mass.Based on an overpass bridge,finite element models of curved girder bridge with different param-eters of High Damping Rubber (HDR)bearing were established by Midas/civil.The applicability of High Damp-ing Rubber bearing in curved box girder was discussed by calculating the structural mechanical behavior under static and dynamic loads.The calculation results show that the transverse moment in pier bottom is smaller under indirect loads because the restraint stiffness of HDR bearing is smaller than pot-type elastomeric pad bearing, but the internal force of piers under direct loads is smaller because the pot-type elastomeric pad bearing is suit-able for transferring load.The radial displacement between different bridges should be checked if the structures are very different,because HDR bearing can't control the transverse displacement effectively relative to pot-type elastomeric pad bearing.With HDR bearing,isolation efficiency of this bridge is from 20%to 60%in longitudi-nal direction,from 60%to 80%in transverse direction.关键词
高阻尼隔震橡胶支座/曲线箱梁桥/时程分析/适用性Key words
high damping rubber bearing/curved box girder/time history analysis/applicability分类
交通工程引用本文复制引用
贺锃,宋旭明,凌意,冷钰..HDR在曲线箱梁桥中的适用性研究[J].铁道科学与工程学报,2016,13(11):2181-2188,8.基金项目
国家自然科学基金资助项目 （）
