摘要
在基础和上部结构之间设置滚轴或铅芯橡胶支座,都能起到隔震的作用,前者因为不能提供恢复力而不能单独使用,将两者按一定比例组合,可以构成组合隔震系统。该文研究了这种组合隔震系统的隔震效果。在对一个历史建筑进行隔震加固时,分别采用铅芯橡胶支座和两种比例的滚轴-橡胶支座组合隔震系统,通过计算建筑物的地震反应,并与非隔震方案进行比较,分析了三种工况的隔震效果。研究结果表明,采用铅芯橡胶支座和组合隔震系统都能明显减小上部结构的地震反应,而且后者的隔震效果优于前者。
The roller or lead-rubber bearings between the upper structure and the foundation could isolate the seismic vibration. The former could not be used solely because it could not provide a restoring force. In this research, the isolation effect of a new type of an isolation system combined with roller and lead-rubber bearings in some way was investigated. The lead-rubber bearings and two kinds of combined systems different in the bearing ratio of roller-lead rubber have been used separately in strengthening an old building, The isolation effects of 3 groups of models are obtained by calculating the seismic response and comparing with non-isolated program. The result shows that both lead rubber bearings and the combined isolation system can reduce the seismic response evidently and the latter is more effective.
出处
《工程力学》
EI
CSCD
北大核心
2011年第A02期171-175,共5页
Engineering Mechanics
基金
国家"十一五"科技支撑计划项目(2006BAJ06A03-06)
山东省教育厅项目(J10LE06)
关键词
结构工程
地震反应
时程分析
组合隔震系统
隔震效果
structural engineering
seismic response
time history analysis
combined isolation system
isolation effect
