(1 广州大学土木工程学院，广州 510006；2 华南理工大学土木与交通学院， 广州 510642；3 华南理工大学亚热带建筑科学国家重点实验室， 广州 510640)

［摘要］以第一阶自振周期为7.35s的超高层框架-核心筒结构为研究对象，依据《建筑抗震设计规范》(GB 50011—2010)反应谱选取7条地震波，并补充7条长周期地震波作为输入样本，研究不同周期地震激励对该类结构抗震性能的影响。研究表明，根据规范选取的地震动周期(0.339～0.666s)与结构第一自振周期相差较远。在14条长、短周期地震波激励下，结构位移、损伤、变形及能量耗散均存在较大差异。长周期地震动作用下，最大层间位移角的平均值比短周期大2.57倍，部分主要受力构件发生严重损伤、变形，滞回耗能占总输入能最大可达到36.4%，而短周期地震动作用下结构基本处于完好状态。因此，对于自振周期超出规范范围(6s)的长周期结构，仅根据规范选取的地震动难以评估结构的抗震能力，建议选取不同周期地震动全面地评估长周期结构的抗震性能。

［关键词］长周期地震波; 长周期超高层结构; 弹塑性时程分析; 损伤分析; 滞回耗能

中图分类号：TU973+.2      文献标识码：A      文章编号：1002-848X(2014)19-0040-06

Study on seismic performance of super high-rise frame-core tube structures under long-period ground motions

Zhang Junwen1, Wu Yi1, Yang Chun2,3, Zhang Chunmei1 , Chen Lin1 , Wang Hongwei1

 (1 School of Civil Engineering, Guangzhou University, Guangzhou 510006,China; 2 School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China; 3 State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, China)

Abstract: A super high-rise frame-core tube structure with the natural vibration period of 7.35s was selected to study the seismic performances and effects of long-period high-rise buildings under different period earthquake excitations. Seven ground motions were selected according to the designing spectrum defined in Code for seismic design of buildings(GB 50011—2010), and seven long-period ground motions were also selected as a supplement. Results show that the predominant periods of the seven ground motions based on the code are between 0.339s and 0.666s, which are much different from the natural period of the structure. Under the fourteen earthquake actions with different periods, the development of damages, deformation and energy dissipation of main structural components differ significantly. Under long-period ground motions, the averaged maximum story drift is 2.57 times of that under shortperiod ground motions, and serious plastic deformation and damage can be found in some main structural members and the hysteretic energy of plastic deformation could be up to 36.4% of the total input energy. While the structure is basically in good condition under short-period excitations. Therefore, for structures with natural period longer than the range of design spectrum in the code, seismic capability of the structure can not be estimated properly under ground motions chosen merely by the code. Earthquake actions with different periods are recommended to comprehensively evaluate seismic performances of the long-period structures.

Keywords: long-period ground motion; long-period high-rise structure; elastic-plastic timehistory analysis; damage analysis; hysteretic-energy

*国家自然科学基金青年科学基金（51108104）,广东省自然科学基金（S2012010010074）,市属高校“羊城学者”

科研项目（12A001D），省科技计划科研项目（2013B02020016）及国家留学基金资助。

通讯作者：吴轶，教授，博士，Email：cv-wuyi@gzhu.edu.cn。

参考文献

［1］周福霖，崔鸿超，安部重孝，等．东日本大地震灾害考察报告［J］．建筑结构，2012，42（4）：8-11．

［2］吴琼，陈清军．高层框架结构长周期地震反应分析［J］．结构工程师，2011，27（1）：78-84．

［3］王亚勇，王理，刘小弟．不同阻尼比长周期抗震设计反应谱研究［J］．工程抗震，1990（1）：38-41．

［4］翁大根，徐植信．上海地区抗震设计反应谱研究［J］．同济大学学报：自然科学版，1993，21（1）：9-16．

［5］王曙光，杜东升，刘伟庆，等．隔震结构不同阻尼比地震影响系数曲线的改进研究［J］． 建筑结构学报，2009，30（3）：112-119．

［6］刘大海，杨翠如． 高层建筑抗震设计［M］．北京:中国建筑工业出版社，1993．

［7］GB 50011—2010 建筑抗震设计规范［S］．北京：中国建筑工业出版社，2010．

［8］廖述清，裴星洙，周晓松，等． 长周期地震波作用下结构的弹塑性地震反应分析［J］． 建筑结构， 2005， 35（5）:24-27．

［9］KUTAY ORAKCAL, LEONARDO MASSONE. Analytical modeling of reinforced concrete walls for predicting flexural and coupled-shear-flexural responses［R］. Los Angeles: University of California, 2006．

［10］MANDER J B, PRIESTLEY M J N, PARK R. Theoretical stress-strain model for confined concrete［J］．Journal of Structural Engineering, 1988，114(8)：1804-1826．

［11］钟善桐． 钢管混凝土统一理论研究与应用［M］． 北京：清华大学出版社，2006．

［12］WATSON J A, ABRAHAMSON N A. Selection of ground motion time series and limits on scaling［J］. Soil Dynamics and Earthquake Engineering， 2006，26（5）：477-482．

［13］Computer and Structure, Inc. Perform-3D user guides ［M］. USA：University of California, Berkeley, 2011．

［14］GB 50010—2010混凝土结构设计规范［S］．北京：中国建筑工业出版社，2011．

［15］季静，肖启艳，黄超，等．基于性能的钢筋混凝土剪力墙受弯破坏变形限值的研究［J］． 建筑结构学报，2010，31（9）：35-41．