摘要
选择取得强震观测资料的建筑结构为研究对象,采用有限元法建立结构的动力反应分析模型,利用SAP2000程序分析了结构的地震反应,并同实际记录到的结构地震反应进行了对比分析,讨论了结构模型参数估计和一些不确定因素对模型精度的影响。
The Sheraton-Universal hotel, an instrumented building lying in North Hollywood, USA is selected for case study in this paper. The finite element method is used to produce a linear time-invariant structural model, and the SAP2000 program is employed for the time history analysis of the instrumented structure under the base excitation of strong motions recorded in the basement during the Northridge, California earthquake of 17 January 1994. The calculated structural responses are compared with the recorded data in both time domain and frequency domain, and the effects of structural parameters evaluation and indeterminate factors are discussed. Some features of structural response, such as the reason why the peak responses of acceleration in the ninth floor are larger than those in the sixteenth floor, are also explained.
出处
《地震工程与工程振动》
CSCD
北大核心
2003年第6期31-36,共6页
Earthquake Engineering and Engineering Dynamics
基金
中美地震科技合作研究项目
江苏省高校自然科学研究计划项目(02KJB560002)
关键词
建筑结构
强震观测
动力模型
地震反应分析
SAP2000
building structure
strong motion instrumentation
dynamic model
seismic response analysis
SAP2000
