本文選題：地面運動記錄 + 雙向�。� 參考：《建筑結構學報》2017年01期

【摘要】：在用動力時程分析法預測高層建筑和復雜建筑的地震反應時,需要輸入包含兩個水平分量的雙向地面運動記錄。通過整理現(xiàn)有雙向地面運動記錄選擇和標定方法可知,我國規(guī)范GB 50011—2010《建筑抗震設計規(guī)范》在這方面存在不足之處。在雙向最大加速度反應譜的基礎上,提出雙向水平地面運動記錄選擇和標定方法。為揭示該方法與我國規(guī)范方法所預測的結構地震反應的差異,并考察根據(jù)我國規(guī)范方法預測出的結構地震反應評價抗震性能的安全性,在一個工程算例的罕遇地震非線性動力反應分析中,分別用這兩種方法選擇雙向地面運動記錄。分析結果表明:基于雙向最大加速度反應譜的雙向地面運動記錄選擇和標定方法較我國規(guī)范方法預測的結構地震反應更大,對于力和位移的預測結果,前者比后者分別增大約7%和15%。針對地震風險起控制作用的地面運動類型不同,我國規(guī)范方法預測出的結構地震反應相對于基于雙向地面運動記錄選擇和標定方法預測出的結構地震反應的危險程度高低亦不同,以統(tǒng)一的性能指標來控制結構的抗震性能,最終實現(xiàn)的各結構抗震安全性有所不同。因此,建議在動力時程分析中采用基于雙向最大加速度反應譜的雙向地面運動記錄選擇和標定方法。
[Abstract]:In order to predict the seismic response of tall buildings and complex buildings by using dynamic time-history analysis method, the bi-directional ground motion records containing two horizontal components should be input. Through sorting out the existing bidirectional ground motion records selection and calibration methods, it can be seen that the code GB50011-2010 "Code for aseismic Design of buildings" has some shortcomings in this respect. Based on the bidirectional maximum acceleration response spectrum, a method for selecting and calibrating the bidirectional horizontal ground motion records is proposed. In order to reveal the difference between this method and the structural seismic response predicted by the code method in China, the safety of the seismic response evaluation of the structure predicted by the code method in China is investigated. In the nonlinear dynamic response analysis of a rare earthquake in an engineering example, the two methods are used to select the bidirectional ground motion records. The results show that the bidirectional ground motion record selection and calibration method based on the bidirectional maximum acceleration response spectrum is larger than the structural seismic response predicted by the code method in China, and the prediction results for the force and displacement are obtained. The former increases about 7% and 15% than the latter, respectively. In view of the different types of ground motion that play a controlling role in earthquake risk, The earthquake response predicted by the code method in our country is different from that predicted by the bidirectional ground motion record selection and calibration method, and the seismic response of the structure is controlled by unified performance index. The ultimate seismic safety of each structure is different. Therefore, a bidirectional ground motion record selection and calibration method based on bidirectional maximum acceleration response spectrum is proposed in dynamic time history analysis.
【作者單位】： 重慶大學土木工程學院;中國建筑科學研究院;
【基金】：國家自然科學基金青年基金項目(51408575)
【分類號】：TU973.31
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本文編號：2087377