Typical features of sites in Shanghai based on HVSR method

PDF(2885 KB)

Journal of Vibration and Shock ›› 2024, Vol. 43 ›› Issue (11) : 312-319.

ZHAO Peng1,2, WEI Xiao1,3, HU Jun1,2

Author information +

History +

Abstract

Shanghai Strong Earthquake Network obtained several strong earthquake records such as the 6.0 magnitude earthquake in Kyushu, Japan, on May 3, 2020. By analyzing and processing the seismic records, the H/V spectral ratio curves of each strong earthquake station are calculated respectively, and the fundamental resonance frequency and sediment thickness of each station are obtained by combining with the distribution map of the buried depth of bedrock of Shanghai Institute of Geological Survey. The results show that: (1) there is an obvious correlation between the peak value of H/V spectral ratio curve and the thickness of the sedimentary layer, and the empirical formula of the thickness of the sedimentary layer and the resonance frequency of the fundamental order in Shanghai is established through data fitting, and the basic period distribution map of the Shanghai market is drawn, which can provide a certain reference for the seismic fortification of Shanghai. (2) There will be multiple peaks in the spectral ratio curve of seismic records on the thick sedimentary layer site, and the second peak represents the higher-order resonance frequency of the sedimentary layer. (3) The empirical formula of shear wave velocity and sediment thickness in Shanghai area is obtained through data fitting.

Key words

HVSR / resonance frequency / sediment thickness / strong earthquake record

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

ZHAO Peng1,2, WEI Xiao1,3, HU Jun1,2. Typical features of sites in Shanghai based on HVSR method[J]. Journal of Vibration and Shock, 2024, 43(11): 312-319

References

[1] 周锡元,王广军,苏经宇. 场地•地基•设计地震[M]. 北京,地震出版社,1991. Zhou Xi-yuan,Wang Guang-jun,Su Jing-yu.Site•foundation•design earthquake[M]. Beijing,Earthquake Press,1991. [2] Sánchez-Sesma F,Chávez-Pérez S,Suarez M,et al. The Mexico earthquake of september 19,1985-on the seismic response of the valley of Mexico [J]. Earthquake Spectra,1988, 4(3): 569-589 [3] Nakamura Y.A method for dynamic characteristics estimation of subsurface using microtremor on the ground surface［J］.Quarterly Report of RTRI,1989,30( 1) : 25-33. [4] Yamazaki F.,Ansary M.A. Horizontal-to-vertical spectrum ratio of earthquake ground motion for site characterization[J]. Earthquake Engineering & Structural Dynamics, 1997,26(7): 671-689. [5] 蒋通,崔哲,李文艺.层状介质中的瑞雷面波理论及其在场地脉动观测中的应用.上海力学,1999,20( 3) : 252-258. Jiang Tong,Cui Zhe,Li Wen-Yi..Theory of rayleigh wave in multi-layered media and its application in microseism observation.Quarterly of Mechanics,1999,20( 3): 252-258. [6] 翟永梅,李文艺,蒋通.上海市地脉动观测及其在场地卓越周期测试中的应用［J］.地震研究,2004,( 3) : 277-282. Zhai Yong-mei,Li Wen-yi,Jiang Tong.Shang hai ground microtremor observation and its application in the field excellent cycle test［J］.Journal of SeismologicalＲesearch,2004,( 3) : 277-282 [7] 马淑芹,熊里军,王军,等. 用上海强震土层垂直观测系统研究软土层对地震动的放大作用[J]. 中国地震,2008,23(3): 267–275. Ma Shu-qin,Xiong Li-jun,Wang Jun,et al. Studies on ground motion amplification induced by sediment layer via seismic vertical observatory system,caoyang park,Shanghai[J]. Earthquake Research in China,2007,23(3): 267–275. [8] Ibs-von Seht M, Wohlenberg J. Microtremor measurements used to map thickness of soft sediments.Bull Seism Soc Am, 1999, 89: 250-259 [9] Parolai S,Bormann P,Milkereit C. New relationships between Vs, thickness of sediments, and resonance frequency calculated by the H/V ratio of seismic noise for the Cologne area (Germany). Bull Seism Soc Am, 2002, 92: 2521-2527 [10] 陈棋福,刘澜波,王伟君,等. 利用地脉动探测北京城区的地震动场地响应[J]. 科学通报,2008,18:2229-2235. Chen Qi-fu,Liu Lan-bo,Wang Wei-jun,et al.Site effects on earthquake ground motion based on microtremor measurements for metropolian Beijing.Chinese Science Bulletin[J].2008,54(18):2229-2235. [11] 王伟君,陈棋福,齐诚,等. 利用噪声 HVSR方法探测近地表结构的可能性和局限性: 以保定地区为例[J].地球物理学报,2011,54( 7) : 1783-1797. WANG Wei-jun,CHEN Qi-fu,QI Cheng,et al.The feasibilities and limitations to explore the near-surfacestructure with microtremor HVSR method: A case in Baoding area of Hebei Province,China[J].Chinese Journal of Geophysics，2011,54( 7) : 1783-797 [12] 宗健业,孙新蕾,张鹏. 利用 HVSR方法研究广州地区的场地效应及估算地震灾害特征[J]. 地震地质,2020,42(3):628-639. Zong Jian-ye,Sun Xin-lei,Zhang Peng.Site effect and earthquake disaster character in GuanZhou area from horizontal-to-vertical spectral ratio(HVSR) method[J]. Seismology and geology,2020,42(3):628-639. [13] 魏子新,翟刚毅,严学新等.上海城市地质图集[M]. 北京:地质出版社,2010. Wei Zhi-xin,Zhai Gang-yi,Yan Xue-xin,et al.Atlas of Shanghai Urban geological [M].Beijing: Geological press. [14] 姚鑫鑫, 任叶飞, 温瑞智, 等. 强震动记录 H/V 谱比法计算处理的若干关键环节[J]. 震灾防御技术, 2019, 14(4): 719-730. YAO Xin-xin, REN Ye-fei, WEN Rui-zhi, et al. Some technical notes on the data processing of the spectral ratio based on the strong-motion records[J]. Technology for Earthquake Disaster Prevention, 2019, 14(4): 719-730. [15] Konno, K., and Ohmachi, T. Ground-motion Characteristics Estimated from Spectral Ratio between Horizontal and Vertical Components of Microtremor[J]. Bull Seismological Soc,1998, 88 (1), 228–241. [16] N. Laouami, A. Slimani.Earthquake Induced Site Effect in the Algiers Boumerdes Region: Relation between Spectral Ratios Higher Peaks and Observed Damage during the May 21st Mw 6.8 Boumerdes Earthquake (Algeria)[J]. Pure and Applied Geophysics, 2013,11(170): 1785-1801. [17] 黄雨,叶为民,唐益群,等.上海软土场地的地震反应特征分析[J]. 地下空间与工程学报,2005,1(5):773-778. Huang Yu,Ye Wei-min,Tang Yi-qun,et al. Characteristic analysis for seismic ground response of soft soils in Shanghai[J]. Chinese Journal of Underground Space and Engineering,2005,1(5):773-778. [18] Delgado, J., C. Lopez Casado, J. Giner, A. Estevez, A. Cuenca, andS. Molina. Microtremors as a geophysical exploration tool:applications and limitations[J], Pure Appl. Geophys. 2000,157, 1445-1462. [19] 许显,宋春华,陆杰,等.上海市地震局崇明长江农场地震观测孔PS波波速测试报告[R].上海:上海中煤物探测量有限公司,2010,1-40. Xu Xian,Son Chun-hua,Lu Jie,et al .PS wave Velocity Test Report of Chong ming Yangtze River farm earthquake observation hole of Shanghai Earthquake Agency [R]: Shanghai: Shanghai zhong mei geophysical survey company, 2010, 1-40. [20] 牛天河,李彬勇,何艳平,等.上海市地震局浦东地震监测中心地震综合深井钻孔波速测试成果报告[R].上海:上海海洋地质勘察设计有限公司,2011,1-40. Niu Tian-he,Li Bin-yong，He Yan-ping,et al .Report on wave velocity test results of seismic integrated deep well borehole of Pudong Earthquake Monitoring Center of Shanghai Earthquake Agency[R]. Shanghai: Shanghai marine geological survey and design company, 2011, 1-40.