- 摘 要
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(1 中國建筑科學(xué)研究院有限公司， 北京 100013； 2 廣州建研數(shù)力建筑科技有限公司， 北京 100013)
［摘要］動力時程分析被廣泛應(yīng)用于結(jié)構(gòu)設(shè)計，而確定地震動有效峰值加速度EPA是選擇動力時程分析地震動加速度記錄的基礎(chǔ)。討論了中國和美國相關(guān)規(guī)范的EPA定義及參數(shù)取值的差異。由于EPA定義與地震動的加速度反應(yīng)譜相關(guān)，給出了222組實際地震的加速度記錄的反應(yīng)譜，并對相關(guān)結(jié)果進行了統(tǒng)計分析。根據(jù)不同的EPA定義，計算了各組地震動水平分量和豎向分量的EPA，分析了結(jié)果的差異及離散性。
［關(guān)鍵詞］地震加速度記錄； 有效峰值加速度； 加速度反應(yīng)譜； 地震放大系數(shù)
中圖分類號：TU352-11, P315-9文獻標識碼：A文章編號：1002-848X(2019)21-0073-04
Statistical analysis of seismic effective peak acceleration
Cao Shengtao1,2, Wang Yayong1, Li Zhishan2, Liu Chunming1,2, Yang Zhiyong1,2, Wang Weining1
(1 China Academy of Building Research, Beijing 100013, China; 2 Guangzhou CABR & SC Co., Ltd., Beijing 100013, China)
Abstract:Dynamic time-history analysis is widely used in structural design, and determining seismic effective peak acceleration (EPA) is the basis of selecting seismic acceleration record of dynamic time-history analysis. The difference of the definitions and parameters of EPA between Chinese and American codes was discussed. As the definition of EPA is related to the response spectra of seismic acceleration, the response spectra of 222 seismic acceleration records were given, and the related results were statistically analyzed. According to the different definitions of EPA, the EPA of horizontal and vertical components of each seismic acceleration record were calculated, and the difference and deviation of the results were analyzed.
Keywords:seismic acceleration record; effective peak acceleration; acceleration response spectra; seismic magnified coefficient
*中國建筑科學(xué)研究院青年基金科研項目（20170122331030031），中國建筑科學(xué)研究院自籌基金科研項目（20170122330730001，20170122330730004）。
作者簡介：曹勝濤,博士,工程師,Email:shengtaocao@163.com。
