地震动广义动力放大系数谱及其特性研究

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摘要传统地震动力放大系数谱是根据地震动最大加速度和结构最大加速度而确定的，没有充分虑及时域非平稳性。通过比较不同周期结构最大反应出现时刻和地震动峰值出现时刻，验证极大峰值对结构反应同样有重要的作用。提出考虑若干极大峰值作用的等效动力放大系数谱的概念，计算不同场地类型下的统计谱并验证其保守性。鉴于考虑频域非平稳性的动力放大系数标准差谱的合理性，计算相关统计谱并确认其在长周期段谱值较高。综合考虑传统谱、等效谱和标准差谱的特点，基于三种谱外包络提出具有足够的保守性的广义动力放大系数谱的概念。建立广义动力放大系数谱与传统谱的比值拟合公式。通过算例验证按广义动力放大系数谱进行结构抗震设计或验算具有更高的安全性。

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	何浩祥
	丁佳伟
	程时涛

关键词 ：地震动, 反应谱, 动力放大系数, 标准差谱, 抗震设计

Abstract：The traditional seismic dynamic amplification factor spectrum is determined according to the maximum acceleration of ground motion and the maximum acceleration of structure, and the non-stationarity in time domain is not fully considered. By comparing the occurring time of maximum response of different periodic structures and the occurring time of peaks of ground motion, it is verified that the peak values play an important role in the structural response spectrum as well. The concept of equivalent dynamic amplification factor spectrum considering several maximal peak effects is proposed, and the statistical spectra with different site types are calculated and the conservativeness is verified. In view of the rationality of the standard deviation spectrum considering the non-stationarity in frequency domain, the corresponding statistical spectrum is calculated and its higher spectral value in long period is confirmed. Considering the characteristics of traditional spectrum, equivalent spectrum and standard deviation spectrum, the concept of general dynamic amplification factor spectrum with sufficient conservativeness is proposed based on three spectral envelopes. The fitting ratio formula of general dynamic amplification factor spectrum and traditional spectrum is presented. The analysis example shows that the seismic design or checking calculation based on the general dynamic amplification factor spectrum has higher safety.

Key words： ground motion response spectrum dynamic amplification factor standard deviation spectrum seismic design

收稿日期: 2019-10-15 出版日期: 2021-03-15

引用本文:

何浩祥，丁佳伟，程时涛. 地震动广义动力放大系数谱及其特性研究[J]. 振动与冲击, 2021, 40(5): 170-178.
HE Haoxiang, DING Jiawei, CHENG Shitao. Generalized dynamic amplification coefficient spectrum of ground motion and its characteristics. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(5): 170-178.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2021/V40/I5/170

[1] BOIT M A. Transient oscillations in elastic system[D]. Aeronautics Department, Calif Inst of Tech, Pasadena, California, 1932.
[2] TRIFUNAC M D. Boit response spectrum[J]. Soil Dynamics and Earthquake Engineering, 2006, 26(6):491-500.
[3] TRIFUNAC M D. Brief history computation of earthquake response spectra [J]. Soil Dynamics and Earthquake Engineering, 2006, 26(6):501-508.
[4] 王博,白国良,代慧娟. 典型地震动作用下长周期单自由度体系地震反应分析[J]. 振动与冲击, 2013, 32(15):190-196.
    WANG Bo, BAI Guoliang, DAI Huijuan. Seismic Response Analysis of Long Period Single Degree of Freedom System under Typical Ground Motion [J]. Vibration and Impact, 2013, 32(15):190-196.
[5] 胡聿贤. 地震工程学(第二版)[M]. 北京: 地震出版社, 2006.
    HU Yuxian. Earthquake Engineering (Second Edition) [M]. Beijing: Seismological Press, 2006.
[6] 中华人民共和国住房和城乡建设部.GB50011-2010,建筑震设计规范[S].北京: 中国建筑工业出版社，2010.
Ministry of Housing and Urban-Rural Construction of the People's Republic of China. GB50011-2010, Code for Seismic Design of Buildings [S]. Beijing: China Construction Industry Press, 2010.
[7] 毛天尔,曾双双,栾极,冯程程. 抗震设计反应谱的动力放大系数[J]. 土木工程与管理学报, 2012, 29(1):89-92.
     MAO Tianer, ZENG Shuangshuang, LUAN Ji, Feng Chengcheng. Dynamic Amplification Factor of Seismic Design Response Spectrum [J]. Journal of Civil Engineering and Management, 2012, 29(1): 89-92.
[8] 徐龙军,谢礼立,胡进军. 抗震设计谱的发展及相关问题综述[J]. 世界地震工程, 2007, 23(2): 49-57.
     XU Longjun, XIE Lili, HU Jinjun. Development of seismic design spectra and related issues [J]. World Seismic Engineering, 2007, 23(2): 49-57.
[9] ZHOU Jing, JIANG Yi, WANG Lixiao. A long-period elastic response spectrum based on the site-classification of Chinese seismic code[J]. Soil Dynamic and Earthquake Engineering,2018, 115(7):622-633.
[10] VUKOBRATOVIC V, FAJFAR P. Code-oriented acceleration spectra for building structures[J]. Bulletin of Earthquake Engineering, 2017,15(10):3013-3026.
[11] MICHELE P, STEFANO S, GIADA G, TOMASO T. A statistical study on the peak ground parameters and amplification factors for an updated design displacement spectrum and a criterion for the selection of recorded ground motions[J]. Engineering Structures, 2014,76(8):163-176.
[12] 肖燕武. 地震反应谱的局限性及最新发展[J]. 水利与建筑工程学报, 2010, 8(6): 56-58.
     XIAO Yanwu. Limitations of Seismic Response Spectrum and Recent Development [J]. Journal of Water Resources and Construction Engineering, 2010, 8(6): 56-58.
[13] ADHIKARY S, SINGH Y. Effect of site amplification on inelastic seismic response[J]. Earthquake Engineer and Engineer Vibration, 2019,18(3):535-554.
[14] 哈莉娅-达力列汗. 反应谱及反应谱的局限性[J]. 工程结构, 2004, 24(6): 110-112.
HALIA-Dudley Khan, Limitations of Response Spectrum and Response Spectrum [J]. Engineering Structure, 2004, 24(6): 110-112.
[15] SURANA, MITESH. Evaluation of seismic design provisions for acceleration-sensitive non-structural components[J]. Earthquakes and Structures, 2019,16(5):611-623.
[16] 胡聿贤,周锡元.弹性体系在平稳和平稳化地面运动下的反应: 中国科学院土木建筑研究所. 地震研究报告集(第一集)[C]. 北京: 科学出版社, 1962.
     HU Yixian, ZHOU Xiyuan. Response of Elastic System to Stationary and Stabilized Ground Motion: Institute of Civil Architecture: Chinese Academy of Sciences. Seismological Research Report (first episode) [C]. Beijing: Science Press, 1962.
[17] 谭启迪, 薄景山, 郭晓云. 反应谱及标定方法研究的历史与现状[J]. 世界地震工程, 2017, 33(2): 46-54.
     TAN Qidi, BO Jingshan, GUO Xiaoyun. History and Current Status of Research on Response Spectrum and Calibration Methods [J]. World Seismic Engineering, 2017, 33(2): 46-54
[18] 刘文光, 何文福, 霍达, 李婕, 冯德民.隔震结构设计加速度反应谱的取值研究[J].振动与冲击,2010,29(4):181-187.
     LIU Wenguang, HE Wenfu, HUO Da, LI Jie, FENG Demin. Study on the Acceleration Response Spectrum of Isolation Structural Design [J]. Vibration and Impact, 2010, 29(4):181-187.
[19] NEHRP 2003: NEHRP Recommended Provision for seismic Regulations for New Buildings and Other Structures[R]. Federal Emergency Management Agency, FEMA450, Commentary.
[20] 李英民, 刘立平. 工程结构的设计地震动[M]. 北京：科学出版社, 2011.
LI Yingmin, LIU Liping. Design Earthquake of Engineering Structures [M]. Beijing: Science Press, 2011.