Study on the Fitting of the Long-Period Ground Motion Acceleration Response Spectrum Based on Genetic Algorithm

ZHANG Liangquan1 YU Jianjie1

(1.School of Civil Engineering, Northeast Forestry University, Harbin, Heilongjiang Province, China 150000)

【Abstract】Due to the relatively low long-period amplitude values and those simplex forms of attenuation, the normative design response spectrum cannot effectively response to the long-period ground motion characteristics. Therefore, it is very significant to adopt a reasonable design response spectrum model to reflect the response spectrum of long-period ground motion. In order to solve this problem, this paper takes the long-period ground motion records of Taiwan Chi-chi Earthquake in 1999 as an example. Firstly, this paper divides the records into groups according to ground acceleration, site classification, and anti-seismic design sectionalization, and makes a contrastive analysis compared with the normative design response spectrum. Secondly, based on the characteristics of the response spectrum of long-period acceleration, a design response spectrum suitable for long-period ground motion is proposed. At the same time, its advantages and disadvantages are contrasted with those of the conventional design response spectrum. The research shows that the long-period design response spectrum proposed in this paper has better applicabilities. The genetic algorithm is used to fit the long-period ground motion response spectrum one by one and the corresponding spectral parameter suggested values are given. What’s more, the long-period ground motion records collected in the Weihe Basin of Wenchuan Earthquake in 2008 are used to verify the reasonability of the spectral parameter suggested values, which provide a reference for the revision of the normative design response spectrum.

【Keywords】 acceleration response spectrum; long-period ground motion; seismic design response spectrum; genetic algorithm;

【DOI】

【Funds】 Fundamental Research Funds for the Central Universities (2572014CB23)

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(Translated by LIU T)

    References

    [1] HU Yuxian. Earthquake Engineering [M]. Beijing: Seismological Press, 2006: 491 (in Chinese).

    [2] ZHOU Jing, FANG Xiaodan, JIANG Yi. Characteristic periods of response spectrum for far-field long-period seismic ground motions [J]. Journal of Building Structures, 2015, 36(6): 1–12 (in Chinese).

    [3] LIChunfeng, ZHANG Yang, ZHAO Jinbao, et al. Long-period ground motion characteristic of the 1999 Jiji (Chi-Chi), Taiwan, mainshock and aftershaocks [J]. Acta Seismologica Sinica, 2006, 19(4), 448–460.

    [4] QIU Lishan. Research on design spectrum of far-sourse long-period ground motion based on seismic records from 2008 Wenchuan earthquake, China [D]. Chongqing: Chongqing University, 2016 (in Chinese).

    [5] GENG Shuwei, TAO Xiaxin, WANG Guoxin. Study on the provisions for the value of design response spectra in long period section [J]. World Earthquake Engineering, 2008, 24(2): 111–116 (in Chinese).

    [6] TAN Qian, LI Yingmin, QIU Lishan, et al. Study on the acceleration seismic design response spectrum based on the Wenchuan ground motions and genetic algorithm [J]. China Civil Engineering Journal, 2018, 51(S1): 50–57 (in Chinese).

    [7] W.H.K.Lee, T.C.Shin, K.W.Kuo, K.C.Chen, C.F.Wu. CWB free-field strong-motion data from the 21 September Chi-Chi, Taiwan, Earthquake [J]. Bulletion of the Seismologicail Society of America, 2001, 91(5): 1370–1376 (in Chinese).

    [8] LI Xuehong, WANG Wenke, WU Di, et al. The bounded method and characteristics analysis for long-period ground motions [J]. Journal of Vibration Engineering, 2014, 27(5): 685–692 (in Chinese).

    [9] LI Xuehong, ZHOU Heming, LI Yexuan, et al. Study on the dynamic response characteristics of isolated continuous girder-bridge under far field long-period ground motions [J]. Journal of Natural Disasters, 2016, 25(3): 137–142 (in Chinese).

    [10] GB18306-2015. The China Seismic Ground Motion Parameter Zonation Map [S]. Beijing: China Standards Press, 2015 (in Chinese).

    [11] LV Hongshan, ZHAO Fengxin. Site coefficients suit able to China site category [J]. Acta Seismologica Sinica, 2007, 29(1): 67–76, 114 (in Chinese).

    [12] HAO Min, XIE Lili, WANG Jiaquan. Preliminary assessment of seismic intensity for main region of heavy disaster in Chi-Chi Earthquake [J]. World Earthquake Engineering, 2006, 22(4): 22–26 (in Chinese).

    [13] ZHOU Xiyuan, WANG Guangjun, SU Jingyu. The influence of magnitude and epicentral distance on the characteristics of ground motion spectrum under the same intensity [J]. Earthquake Resistant Engineering and Retrofitting, 1983, Z(1): 49–55 (in Chinese).

    [14] GENG Shuwei, ZHAO Wansong, GAO Yongxin. Research on characteristic periods of response spectrum based on classification of design earthquake [J]. Journal of Hefei University of Technology (Natural Science), 2018, 41(2): 211–215 (in Chinese).

    [15] HUANG Xiaoyan, ZHAO Huasheng, HUANG Ying, et al. An genetic neural netwaork ensemble prediction model for tropical cyclones rainfall in Guangxi [J]. Journal of Natural Disasters, 2017, 26(6): 184–196 (in Chinese).

    [16] ZHANG Liangquan, YU Jianjie. Define and classification of near and far field long period ground motions [J]. Journal of Natural Disasters, 2019, 28(2): 29–36 (in Chinese).

    [17] FANG Xiaodan, WEI Lian, ZHOU Jing. Characteristics of earthquake response for long-period structures and response spectrum [J]. Journal of Building Structures, 2014, 35(3): 16–23 (in Chinese).

This Article

ISSN:1004-4574

CN: 23-1324/X

Vol 28, No. 06, Pages 17-27

December 2019

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Article Outline

Abstract

  • 1 Calculation principle and method of response spectrum
  • 2 Long-period ground motion grouping of Chi-chi Earthquake and its comparison with normative design spectrum
  • 3 Fitting model of long-period design response spectrum
  • 4 Calculation and analysis of design response spectrum parameters of ground motion based on genetic algorithm
  • 5 Values of design response spectrum of long-period ground motion under different groups
  • 6 Analysis of response spectrum fitting of long-period ground motion in Weihe Basin of Wenchuan Earthquake
  • 7 Conclusions
  • References