摘要
长期以来我国建筑隔震设计采用分部设计法,将隔震系统和上部结构分开设计,极大简化了设计流程,且具有合理性。但是分部设计法无法精确地得到上部结构的地震作用大小及沿楼层分布,因此国内外学者提出采用整体设计法进行建筑隔震设计。采用整体设计法,地震作用考虑较为精确,但由于反复迭代而增大了设计工作量。为兼顾建筑结构隔震设计方法的精确性,推动隔震结构整体设计方法的应用,提出采用基于位移-速度-加速度三联反应谱的隔震结构整体设计法,对比既有整体设计法与基于三联反应谱整体设计法的流程。结果表明,三联反应谱法能较大程度地减少迭代过程,且适用于设计过程中对于减震效果进行控制的要求。针对某高烈度抗震设防区高层隔震结构,采用三联反应谱法对隔震层进行了设计和校核,将非线性时程分析得到的隔震结构响应与采用三联反应谱法的计算结果进行了对比,验证了所提出设计方法的有效性。
The partial design method has been adopted for decades in China,which involves the design of isolation layer and the superstructure separately to simplify the process.The partial design method is reasonable and easy to use.However,it could not accurately capture the magnitude and the distribution of the seismic effect on the isolated superstructure.The engineers and scholars proposed the integral method to design base isolated buildings.The integral method can predict the seismic action with a higher precision but it is time consuming due to the iterative process.A novel integral design method using the displacement-velocity-acceleration(D-V-A)response spectrum was proposed,aiming to simplify the iterative with high precision and promote the use of integral design method.The ordinary and novel D-V-A integral methods were described and compared.Results indicated that the design method can reduce the time of iteration and meet the control requirement of seismic reduction effect.Besides,a base-isolated high-rise building in a high seismic region was adopted to check the accuracy of the D-V-A based design process.The time history results were also compared with the D-V-A results to verify the proposed design method.
作者
周颖
陈鹏
ZHOU Ying;CHEN Peng(State Key Laboratory of Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China)
出处
《建筑结构学报》
EI
CAS
CSCD
北大核心
2020年第S02期53-59,共7页
Journal of Building Structures
基金
国家自然科学基金项目(51878502)
上海市优秀学术带头人计划(19XD1423900)
关键词
分部设计法
整体设计法
三联反应谱
数值验证
partial design method
integral design method
displacement-velocity-acceleration response spectrum
numerical analysis
作者简介
周颖,出生于1978年,女,工学博士,教授,主要从事结构抗震研究。email:yingzhou@tongji.edu.cn
