本文選題：強(qiáng)震記錄選取 + 地震信息��； 參考：《建筑結(jié)構(gòu)學(xué)報(bào)》2017年12期

【摘要】：隨著國內(nèi)外強(qiáng)震記錄的積累和結(jié)構(gòu)時(shí)程分析的廣泛應(yīng)用,抗震設(shè)計(jì)中強(qiáng)震記錄的選取作為重要的基礎(chǔ)性工作受到廣泛關(guān)注。以我國現(xiàn)行建筑抗震設(shè)計(jì)規(guī)范中的天然強(qiáng)震記錄選取為研究對象,基于美國PEER的NGA-West1數(shù)據(jù)庫和我國數(shù)字強(qiáng)震臺網(wǎng)2007—2015年強(qiáng)震記錄數(shù)據(jù)建立備選數(shù)據(jù)庫,對地震信息篩選條件以及調(diào)幅系數(shù)區(qū)間做了分別研究,提出了利用全周期段匹配結(jié)果進(jìn)行權(quán)重函數(shù)優(yōu)化,整理總結(jié)了一套系統(tǒng)的包含地震信息篩選、調(diào)幅匹配以及篩選驗(yàn)證的完整強(qiáng)震記錄選取流程,并選用12層和3層典型平面混凝土框架對不同記錄選取方案做了數(shù)值模擬驗(yàn)證,采用ATC-63推薦的遠(yuǎn)場數(shù)據(jù)集(44條)擬合了該結(jié)構(gòu)的最大層間位移角預(yù)測模型,對比抗震設(shè)防烈度為7、8度設(shè)計(jì)目標(biāo)譜工況下不同強(qiáng)震記錄選取方案的數(shù)值分析結(jié)果,證明全周期段優(yōu)化權(quán)重匹配記錄選取方案數(shù)值模擬結(jié)果與預(yù)測響應(yīng)具有較好一致性,且離散性要優(yōu)于傳統(tǒng)記錄選取方案。最后針對常用的7度、8度以及9度罕遇地震作用下的Ⅱ類場地,對應(yīng)于我國抗震規(guī)范目標(biāo)譜給出了供工程、科研人員參考選用的記錄數(shù)據(jù)集。
[Abstract]:With the accumulation of strong earthquake records at home and abroad and the wide application of structural time history analysis, the selection of strong earthquake records as an important basic work in seismic design has received extensive attention.Based on the NGA-West1 database of PEER in the United States and the strong earthquake record data of China Digital strong earthquake Network from 2007 to 2015, the natural strong earthquake records in the current code for seismic design of buildings in China are taken as the research object.The screening conditions of seismic information and the interval of amplitude modulation coefficient are studied, and the weight function optimization is proposed by using the matching results of the whole period segment, and a set of system including seismic information screening is summarized.The selection process of complete strong earthquake records for amplitude modulation matching and screening verification is also presented, and the 12 and 3 story typical plane concrete frames are used to simulate the different record selection schemes.Using 44 far field data sets recommended by ATC-63, the prediction model of maximum interstory displacement angle of the structure is fitted, and the numerical analysis results of different strong earthquake record selection schemes under the design target spectrum of 7 ~ 8 degree seismic fortification intensity are compared.It is proved that the numerical simulation results are consistent with the predicted response and the discreteness is better than the traditional record selection scheme.At last, according to the target spectrum of seismic code of our country, the record data set for engineering and scientific research personnel is given for reference and selection for the second kind of site under the action of rare earthquakes of 7 degrees or 8 degrees and 9 degrees, corresponding to the target spectrum of seismic code of our country.
【作者單位】： 中國地震局工程力學(xué)研究所;中國地震局地震工程與工程振動重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家自然科學(xué)基金項(xiàng)目(51308515) 公益性地震行業(yè)科研專項(xiàng)(201508005) 黑龍江省科技基金項(xiàng)目(LC2015022)
【分類號】：TU352.11

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