近断层地震动作用下超高层结构地震响应分析

详细信息    查看全文 | 推荐本文 |

英文篇名：Analysis of Seismic Responses of Super High-rise Structure Under Near-fault Ground Motion 作者：李敏 ; 黄天璨 英文作者：LI Min;HUANG Tiancan;Earthquake Engineering Research & Test Center of Guangzhou University;Guangdong Provincial Key Laboratory of Earthquake Engineering and Advanced Technology, Guangzhou University;Key Laboratory of Earthquake Resistance Earthquake Mitigation and Structural Safety Ministry of Education, Guangzhou University; 关键词：近断层脉冲型地震动 ; 超高层结构 ; 动力分析 ; 结构响应 英文关键词：Near-fault pulse-type ground motions;;Super high-rise structure;;Dynamic analysis;;Structural response 中文刊名：HNDI 英文刊名：South China Journal of Seismology 机构：广州大学工程抗震研究中心;广东省地震工程与应用技术重点实验室;工程抗震减震与结构安全教育部重点实验室; 出版日期：2018-12-15 出版单位：华南地震 年：2018 期：v.38 基金：国家重点研发计划资助项目(2017YFC0703600) 语种：中文; 页：HNDI201804014 页数：6 CN：04 ISSN：44-1266/P 分类号：88-93

摘要

研究了近断层脉冲型地震动作用下超高层结构的影响。选取了近断层脉冲型地震、近断层无脉冲型地震动和普通地震动,用三类地震动对超高层结构进行了7度(0.1 g)罕遇水准地震作用下的动力时程分析,对比分析三类地震动作用下超高层结构的动力响应。结果表明:近断层脉冲型地震动的脉冲特性放大了超高层结构的响应;近断层脉冲型地震动作用下结构响应在加强层处的突变值大于无脉冲型地震动及普通地震动作用下的突变值;近断层脉冲型地震动作用下结构的最大层间位移角出现下移的趋势。
        A super high-rise structure with the natural vibration period exceeding 6 s was selected to study the effects of Super High-rise Structure under near-fault pulse-type ground motions. First of all, near-fault pulsetype ground motions, non-pulse-type ground motions and general ground motions were selected. The spectrum properties and characteristics of three types of ground motion were analyzed and compared. Then, the three types of selected ground motion records were taken as inputs to carry out elastic-plastic time-history analysis under rare earthquake action on an out-of-code high-rise building in 7-degree seismic fortification region with basic ground acceleration of 0.1 g. And the results of internal force response and displacement response were compared and analyzed for the structure under different types of ground motions.The results show that the pulse characteristics of near-fault pulse-type ground motions amplify the response of super-high-rise structures; The mutation value of inter-story drift ratio and floor story shear of super-high-rise structure under near-fault pulsetype ground motions is greater than the value under non-pulse-type ground motions and general ground motions;the maximum inter-story drift angle of the structure has a trend to move down under the near-fault pulse-type ground motions.

引文

[1]Li C F,Li Y B.Identification of Near-Field Pulse-Like Ground Motions Recorded at Bajiao Station during the Mainshock of the Great Wenchuan Earthquake[J].Advanced Materials Research,2011,250-253:2546-2553.
    [2]陈波,谢俊举,温增平.汶川地震近断层地震动作用下结构地震响应特征分析[J].地震学报,2013,35(2):250-261.
    [3]谭平,谈忠坤,周福霖.近场地震动特性及其弹性与塑性谱的研究[J].华南地震,2008,28(2):1-9.
    [4]左琼,吴强,陈少林.速度脉冲型地震动瞬时输入能特性研究[J].工业建筑,2009,46(s1):186-189.
    [5]杨迪雄,赵岩,李刚.近断层地震动运动特征对长周期结构地震响应的影响分析[J].防灾减灾工程学报,2007,27(2):133-140.
    [6]杨迪雄,王汉兵,李刚.近断层地震动对短肢剪力墙高层结构地震反应的影响[J].地震工程与工程振动,2008,28(6):106-115.
    [7]崔臻,盛谦.近断层/远场地震动作用下控制性岩体结构对地下洞室地震稳定性影响研究[J].岩石力学与工程学报,2017,36(1):53-67.
    [8]张莹,孙广俊,李鸿晶.近断层速度脉冲对RC框架的地震反应影响[J].防灾减灾工程学报,2017,37(3):368-373.
    [9]Lubliner J,Oliver J,Oller S,et al.A Plastic-Damage Model for Concrete[J].International Journal of Solids&Structures,1989,25(3):299-326.
    [10]Lee J,Fenves G L.Plastic-Damage Model for Cyclic Loading of Concrete Structures[J].Journal of Engineering Mechanics,1998,124(8):892-900
    [11]中华人民共和国住房和城乡建设部.GB 50010-2010:混凝土结构设计规范[S].北京:中国建筑工业出版计,2010.
    [12]中华人民共和国住房和城乡建设部.GB5011-2010:建筑抗震设计规范[S].北京:中国建筑工业出版计,2010.