摘要
介绍了双曲面球型减隔震支座的构造特点和工作机理,表明其能够满足减隔震支座的三个基本要求,并具有结构简单、抗震性能稳定可靠的优点.分析了在地震作用下该支座产生竖向位移的原因和影响因素,并通过试验验证了理论分析的结果.通过对一个2跨连续梁桥算例的非线性时程反应分析,表明此竖向位移对梁体的响应不会有很严重的影响,该支座完全可以满足连续梁桥的减隔震要求.
The configuration characteristics and working mechanism of double spherical aseismic bearing are introduced first. The bearing can satisfy the three basic requirements for seismic isolation, and it also has the merit of compact configuration and reliable seismic performance. Then an analysis is made of the cause and influencing factors of the vertical displacement of the bearing and proved by ex- perimental results. At last, a numerical analysis of a two-span continuous girder bridge is performed as an example to show that the bearing is suitable for the seismic design of continuous girder bridges.
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2007年第9期1181-1185,共5页
Journal of Tongji University:Natural Science
关键词
双曲面球型减隔震支座
连续梁桥
减隔震
竖向位移
double spherical aseismic bearing
continuous girder bridges
seismic isolation
vertical displacement
