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（1 廣州容柏生建筑結(jié)構(gòu)設(shè)計(jì)事務(wù)所，  廣州 510170； 2 合肥工業(yè)大學(xué)土木與水利工程學(xué)院， 合肥 230009）

［摘要］通過(guò)三種地震記錄選擇方法，對(duì)某超高層巨型框架結(jié)構(gòu)進(jìn)行了大震作用下的彈塑性時(shí)程分析，研究了不同地震記錄選擇方法對(duì)巨型框架結(jié)構(gòu)能量反應(yīng)的影響。依據(jù)結(jié)構(gòu)地震能量反應(yīng)結(jié)果，分析了擬合設(shè)計(jì)加速度譜和擬合能量譜這兩種地震記錄選擇方法對(duì)結(jié)構(gòu)能量反應(yīng)的影響及區(qū)別?？芍V匹配法生成地震記錄在保持天然記錄諸多特性的同時(shí)，可很好地反映結(jié)構(gòu)設(shè)計(jì)加速度譜的特點(diǎn)。建議分別采用擬合能量譜法和譜匹配法選擇天然記錄和人工記錄。算例分析表明，由于設(shè)計(jì)加速度譜在長(zhǎng)周期段有所放大，因而長(zhǎng)周期段基于擬合設(shè)計(jì)加速度譜選擇記錄會(huì)帶來(lái)過(guò)大的結(jié)構(gòu)能量反應(yīng)，為按能量譜擬合結(jié)果的10倍左右，超高層結(jié)構(gòu)設(shè)計(jì)與大震作用下分析時(shí)需予以重視。

［關(guān)鍵詞］地震記錄; 超高層; 巨型框架結(jié)構(gòu); 地震能量

中圖分類號(hào)：TU973.1+9      文獻(xiàn)標(biāo)識(shí)碼：A      文章編號(hào)：1002-848X(2014)02-0019-06

Analysis on seismic energy response of super tall mega-frame structure under different ground motion record selection methods

Chang Lei1, Ye Xianguo2

（1 RBS Architecture Engineer Design Associate, Guangzhou 510170, China; 2 School of Civil and Hydrawlic Engineering, Hefei University of Technology, Hefei 230009, China）

Abstract: Elasto-plastic time history analysis on a super tall mega-frame structure under the rare earthquake was carried out using three ground motion record selection methods, and effects of three methods on the structure’s energy response were compared and evaluated. Through the seismic energy response analysis results, influences of record selection methods based on fitting design acceleration response spectrum and fitting energy response spectrum were evaluated. Spectrum-matched method can maintain actual earthquake record’s characteristics as well as reflecting the design spectrum perfectly. Fitting energy response spectrum method and spectrum-matched method were proposed to select real rare earthquake records and produce artificial earthquake record respectively. Based on calculations, design acceleration spectrum in long period was amplified artificially so exaggerated structural energy response will be resulted while using fitting design acceleration response spectrum method, and the energy response is around 10 times of that by fitting energy response spectrum method. It should be noticed in structural design and seismic analysis under rare earthquake of super tall building.

Keywords: ground motion record; super tall building; mega-frame structure; seismic energy

*國(guó)家自然科學(xué)基金重大研究計(jì)劃（90715016）。

作者簡(jiǎn)介：常磊，博士，工程師，Email：changlei1218@163.com。

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