|
|
|
| Characteristic periods and intensity indexes for far-field long-period ground motion frequency spectra |
| WANG Bo1 LIU Bo-quan1 Wu Tao1 DAI Hui-juan2 |
1. College of Civil Engineering, Chang’an University, Xi’an 710061, China；
2. College of Architecture and Civil Engineering, Xi’an University of Science and Technology, Xi’an 710054, China |
|
|
|
|
Abstract At present, there are no characterization parameters of characteristic period and intensity indexes of aseismic analysis for far-field long-period ground motion frequency spectra. Here, 40 far-field long-period ground motions were selected, and 12 types of representative frequency spectra’ characteristic period parameters and 20 types of intensity indexes for each ground motion were calculated using codes programmed with MATLAB. The characteristics of period parameters were analyzed based on the average value and variant coefficient’ calculation results of long-period ground motion frequency spectra’ characteristic periods. Besides, the correlations between intensity indexes and earthquake responses of far-field long-period ground motions were analyzed through calculating correlation coefficients between 20 types of intensity indexes and 5 types of maximum seismic responses including max acceleration, max velocity, max displacement, max input energy and max hysteretic dissipation energy of 400 single-DOF systems with two varying parameters of natural period and ductility factor. The study results showed that different period parameters reflect different frequency spectral characteristics, and their stabilities also have larger differences; Hilbert marginal spectral average period Tmh is suggested as the characterization parameter of characteristic period for far-field long-period ground motions; correlations between intensity indexes and maximum seismic responses are related to types of intensity indexes, natural periods and ductility factors; peak ground velocity PGV and peak ground displacement PGD have better correlations with maximum seismic responses under different natural periods, correlations grow with increase in natural period; so PGV and PGD are suggested as aseismic analysis intensity indexes for far-field long-period ground motions.
|
|
Received: 03 May 2017
Published: 28 March 2018
|
|
|
|
[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)：1-20.
ZHOU Fu-lin, CUI Hong-chao, Shigetaka ABE, et al. Inspection report of the disaster of the Ease Japan earthquake by Sino-Japanese joint mission[J].Buildings, 2012, 42(4):1-20.
[2] 肖从真，徐培福，杜义欣，等. 超高层建筑考虑长周期地震影响的另一种控制方法[J]. 土木工程学报，2014，47(2)：12-22.
XIAO Cong-zhen XU Pei-fu DU Yi-xin, et al. Another controlling method on long-period seismic responses for super high-rise buildings[J]. Journal of China Civil Engineering,2014，47(2):12-22.
[3] 徐龙军，谢礼立. 集集地震近断层地震动频谱特性[J]. 地震学报，2005，27（6）：656-665.
XU Long-jun, XIE Li-li. Characteristics of frequency content of near-fault ground motions during the Chi-Chi earthquake[J]. Acta Seismologica Sinica, 2005, 27(6): 656-665.
[4] GB 50011-2010, 建筑抗震设计规范[S]. 北京：中国建筑工业出版社, 2010.
GB 50011-2010, Code for seismic design of buildings[S]. Beijing: China Building Industry Press, 2010.
[5] 陈清军，袁伟泽. 基于长周期地震动记录的 SDOF体系能量谱探讨[J]. 振动与冲击，2013，32(10)：36-42＋54.
CHEN Qing-jun, YUAN Wei-ze. Energy spectrum of SDOF system based on long-period ground motion records[J]. Journal of Vibration and Shock,2013,32(10):36-42＋54.
[6] 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+214.
WANG Bo, BAI Guo-liang, DAI Hui-juan. Seismic response analysis of long-period SDOF system under typical ground motions[J]. Journal of Vibration and Shock,2013,32(15): 190-196+214.
[7] 杜东升，王曙光，刘伟庆，等. 长周期地震动影响因素及频谱参数研究[J]. 建筑结构学报，2014，35(s1)：1-8.
DU Dong-sheng, WANG Shu-guang, LIU Wei-qing, et al. Study on affecting factors and spectral parameters of long period ground motions[J]. Journal of Building Structures,2014,35(s1):1-8.
[8] Applied Technology Council（ATC）. Tentative Provisions for the Development of Seismic Regulations for Buildings. ATC-06，Redwood City，California，1978:1-52.
[9] Yang D X, Wang W. Nonlocal period parameters of frequency content characterization for near-fault ground motions[J]. Earthquake engineering and structural dynamics, 2012, 41(14), DOI 10.1002/eqe.2157.
[10] Newmark N M, Hall W J. Earthquake spectra and design[J]. Earthquake Engineering Research Institute: Berkeley, California, 1982.
[11] Rathje E M, Faraj F, Russell S, et al. Empirical relationship for frequency content parameters of earthquake ground motions[J]. Earthquake Spectra, 2004, 20 (1):119-144.
[12] Rathje E M, Abrahamon N A, Bray J D. Simplified frequency content estimates of earthquake ground motions[J]. Journal of Geotechnical Engineering 1998: 124(2):150-159.
[13] 王伟. 近断层地震动的频谱特性与能量谱分析[D]. 大连：大连理工大学，2010.
WANG Wei. Analysis on frequency content characteristic and energy spectrum of near-fault ground motions[D]. Dalian: Dalian University of Technology, 2010.
[14] 陆新征，叶列平，缪志伟，等.建筑抗震弹塑性分析—原理、模型与在ABAQUS，MSC.MARC和SAP2000上的实践[M].北京：中国建筑工程出版社，2009.
LU Xin-zheng, YE Lie-ping, Miao Zhi-wei, et al. Elasto-plastic analysis of buildings against earthquake——theory, model and implementation on ABAQUS, MSC.MARC and SAP2000[M]. Beijing: China Architecture & Building Press,2009.
[15] 陈波. 结构非线性动力分析中地震动记录的选择和调整方法研究[D]. 北京：中国地震局地球物理研究所，2013.
CHEN Bo. Ground motion selection and modification methods for performing nonlinear dynamic analysis of buildings[D]. Beijing: Institute of Geophysics, China Earthquake Administration, 2013.
[16] 陈健云，李静，韩进财，等. 地震动强度指标与框架结构响应的相关性研究[J]. 振动与冲击，2017，36(3)：105-112+144.
CHEN Jian-yun, LI Jing, HAN Jin-cai, et al. Correlation between ground motion intensity indexes and seismic responses of frame structures[J]. Journal of Vibration and Shock, 2017, 36(3): 105-112+144.
[17] Arias A. A measure of earthquake intensity[J]. Seismic Design for Nuclear Power Plants, 1970, MIT Press: Cambridge, Massachusetts.
[18] Riddell R, Garcia E J. Hysteretic energy spectrum and damage control[J]. Earthquake Engineering and Structure Dynamics, 2001, 30(12):1791-1816.
[19] Housner G W. Measures of severity of earthquake ground shaking[C]. Proceedings of the U. S. National Conference on Earthquake Engineering, EERI, Ann Arbor.
[20] Honsner G W, Jennings P C. Generation of artificial earthquakes[J]. Journal of the Engineering Mechanics Divison, 1964, 90(EM1):113-150.
[21] Park Y J, Ang A H S, Wen Y K. Seismic damage analysis of reinforced concrete buildings[J]. Journal of Structural Engineering, 1985, 111(4):740-757.
[22] Nau J M, Hall W J. An evaluation of scaling methods for earthquake response spectra[J]. Structural Research Series No. 499, Department of Civil Engineering, University of Illinois, Urbana.
[23] Fajfar P, Vidic T, Fischinger M. A measure dynamics of earthquake motion capacity to damage medium-period structures[J]. Soil Dynamics and Earthquake Engineering, 9(5):236-242.
[24] 郝敏，谢礼力，徐龙军. 关于地震烈度物理标准研究的若干思考[J]. 地震学报，2005,27（2）：230-234.
HAO Min, XIE Li-li, XU Long-jun. Some considerations on the physical measure of seismic intensity[J]. Acta Seismologica Sinica, 2005, 27(2): 230-234.
[25] Rafael R. On ground motion intensity indices[J]. Earthquake spectra, 2007, 23(1):147-173.
[26] Yang D X, Pan J W, Li G. Non-structure-specific intensity measure parameters and characteristic period of near-fault ground motions[J] Earthquake engineering and structural dynamics, 2009, 38:1257-1280.
|
|
|
|
