發(fā)布時(shí)間：2018-07-01 09:48

  本文選題：地面運(yùn)動(dòng)記錄 + 雙向　； 參考：《建筑結(jié)構(gòu)學(xué)報(bào)》2017年01期

【摘要】：在用動(dòng)力時(shí)程分析法預(yù)測(cè)高層建筑和復(fù)雜建筑的地震反應(yīng)時(shí),需要輸入包含兩個(gè)水平分量的雙向地面運(yùn)動(dòng)記錄。通過(guò)整理現(xiàn)有雙向地面運(yùn)動(dòng)記錄選擇和標(biāo)定方法可知,我國(guó)規(guī)范GB 50011—2010《建筑抗震設(shè)計(jì)規(guī)范》在這方面存在不足之處。在雙向最大加速度反應(yīng)譜的基礎(chǔ)上,提出雙向水平地面運(yùn)動(dòng)記錄選擇和標(biāo)定方法。為揭示該方法與我國(guó)規(guī)范方法所預(yù)測(cè)的結(jié)構(gòu)地震反應(yīng)的差異,并考察根據(jù)我國(guó)規(guī)范方法預(yù)測(cè)出的結(jié)構(gòu)地震反應(yīng)評(píng)價(jià)抗震性能的安全性,在一個(gè)工程算例的罕遇地震非線(xiàn)性動(dòng)力反應(yīng)分析中,分別用這兩種方法選擇雙向地面運(yùn)動(dòng)記錄。分析結(jié)果表明:基于雙向最大加速度反應(yīng)譜的雙向地面運(yùn)動(dòng)記錄選擇和標(biāo)定方法較我國(guó)規(guī)范方法預(yù)測(cè)的結(jié)構(gòu)地震反應(yīng)更大,對(duì)于力和位移的預(yù)測(cè)結(jié)果,前者比后者分別增大約7%和15%。針對(duì)地震風(fēng)險(xiǎn)起控制作用的地面運(yùn)動(dòng)類(lèi)型不同,我國(guó)規(guī)范方法預(yù)測(cè)出的結(jié)構(gòu)地震反應(yīng)相對(duì)于基于雙向地面運(yùn)動(dòng)記錄選擇和標(biāo)定方法預(yù)測(cè)出的結(jié)構(gòu)地震反應(yīng)的危險(xiǎn)程度高低亦不同,以統(tǒng)一的性能指標(biāo)來(lái)控制結(jié)構(gòu)的抗震性能,最終實(shí)現(xiàn)的各結(jié)構(gòu)抗震安全性有所不同。因此,建議在動(dòng)力時(shí)程分析中采用基于雙向最大加速度反應(yīng)譜的雙向地面運(yùn)動(dòng)記錄選擇和標(biāo)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(xué)土木工程學(xué)院;中國(guó)建筑科學(xué)研究院;
【基金】：國(guó)家自然科學(xué)基金青年基金項(xiàng)目(51408575)
【分類(lèi)號(hào)】：TU973.31
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本文編號(hào)：2087377