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[1]BA Zhenning,ZHAO Jingxuan,LIANG Jianwen,et al.Simulation of Strong Ground Motion in Beijing Area Based on Finite Fault Source Model:Taking the 1679 Sanhe-Pinggu M8 Earthquake as an Example[J].Journal of Seismological Research,2022,45(03):479-488.[doi:10.20015/j.cnki.ISSN1000-0666.2022.0048 ]

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Simulation of Strong Ground Motion in Beijing Area Based on Finite Fault Source Model:Taking the 1679 Sanhe-Pinggu M8 Earthquake as an Example

Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume: 45 Number of periods: 2022 03 Page number: 479-488 Column: 生命线工程系统抗震防灾专栏 Public date: 2022-06-20

Title:: Simulation of Strong Ground Motion in Beijing Area Based on Finite Fault Source Model:Taking the 1679 Sanhe-Pinggu M8 Earthquake as an Example

Author(s):: BA Zhenning¹; 2; ZHAO Jingxuan²; LIANG Jianwen¹; 2; ZHANG Yushan³; ZHANG Yujie³; (1.Laboratory of Earthquake Engineering Simulation and Seismic Resilience of China Earthquake AdministrationTianjin University,Tianjin 300350,China)(2.Department of Civil Engineering,Tianjin University,Tianjin 300350,China)(3.China Earthquake Disaster Prevention Centre,Beijing 100029,China)

Keywords:: ground motion simulation; rupture model of the fault; the spectral element method; kinematic source model

CLC:: P315.91

DOI:: 10.20015/j.cnki.ISSN1000-0666.2022.0048

Abstract:: The distribution characteristics of the strong ground motion caused by the 1679 Sanhe-Pinggu earthquake(M8)in Beijing area are simulated by the Spectral Element Method on the TH-1A computer installed in the National Supercomputer Center.In this paper,A kinematic finite fault source program for spectral element simulation is developed,and a 3D velocity structure model of Beijing area is established based on the ground elevation data and the underground exploration data.The kinematic source model is used to achieve a deterministic physical simulation with a maximum frequency of 2 Hz.The simulation analysis of the bilateral fault and two kinds of unilateral faults is carried out,and the influence of the fault mode on the strong ground motion in Beijing area is highlighted.Results show that:①Ground motions in the north and the west part of Beijing is higher than those in the south and the east part.In Sanhe-Pinggu region and its vicinity,the near-fault effect is significant,PGA here is around 0.37 g,PGA in Dachang is 0.32 g,as the main disastrous regions,the peak acceleration in Pinggu,Sanhe and Dachang is significantly higher than those in other areas.②The fault rupture mode significantly affects the distribution of ground motion,and the scope of influence of the the bilateral rupture is wider than that of the unilateral rupture,which poses the greatest threat to Beijing area.The peak acceleration and the peak speed in central Beijing can reach 0.12 g and 1.0 m/s respectively.③The change of fault rupture mode significantly affects the velocity time history of the observational results,and also changes epicentral distance.When epicentral distance decreases,the peak ground motion appears earlier,the peak value increases,and the duration of ground motion is prolonged.This phenomenon is more obvious when sedimentary topography exists at the observation point.

References:: 巴振宁,仲浩,梁建文,等.2020.沉积介质各向异性参数对三维沉积盆地地震动的影响[J].应用基础与工程科学学报,28(6):1470-1488.
付长华,高孟潭,俞言祥.2015.用数值模拟方法研究北京盆地对3-10 s地震动的放大效应[J].地震研究,38(3):448-460.
付长华.2012.北京盆地结构对长周期地震动加速度反应谱的影响[D].北京:中国地震局地球物理研究所.
高孟潭,俞言祥,张晓梅,等.2002.北京地区地震动的三维有限差分模拟[J].中国地震,18(4):40-48.
高文学,马瑾.1993.首都圈地震地质环境与地震灾害[M].北京:地震出版社.
李祥秀,刘爱文,李小军.2021.长周期地震动作用下RID-巨-子结构消能控制体系减震性能研究[J].地震研究,44(2):216-224.
刘博研,史保平,张健.2007.复合地震源模拟强地面运动——以1679年三河—平谷M_S8.0地震为例[J].地震学报,29(3):302-313.
刘启方,金星,丁海平.2008.复杂场地条件下震源参数对断层附近长周期地震动的影响[J].地球物理学报,51(1):186-196.
刘启方.2005.基于运动学和动力学震源模型的近断层地震动研究[D].哈尔滨:中国地震局工程力学研究所.
刘中宪,刘英,孟思博,等.2021.基于间接边界元法的近断层沉积谷地地震动模拟[J].岩土力学,42(4):1141-1155.
刘中宪,张征,王少杰,等.2019.基于快速多极子间接边界元法的城市区域沉积盆地三维地震响应宽频模拟[J].岩土力学,40(10):4101-4110.
潘波,许建东,刘启方.2009.1679年三河—平谷8级地震近断层强地震动的有限元模拟[J].地震地质,31(1):69-83.
余中元,潘华,沈军,等.2020.夏垫断裂荣家堡探槽揭示的断裂活动特征及未来地震危险性概率评价[J].地震地质,42(3):688-702.
张冬丽,张伟,徐锡伟,等.2009.断层破裂方式对银川盆地强地面运动的影响[J].地震工程与工程振动,29(4):1-8.
张效亮,张郁山,吴昊.2018.地震动衰减关系中震中距和断层源距转换[J].地震工程与工程振动,38(1):178-189.
赵由佳,张国宏,单新建,等.2018.考虑地形起伏和障碍体破裂的汶川地震强地面运动数值模拟[J].地球物理学报,61(5):1853-1862.
朱耿尚.2014.有限差分方法在强地面运动模拟中的应用[D].合肥:中国科学技术大学.
Hisada Y,Bielak J,Ghattas O,et al.1998.Simulations of long-period ground motions during the 1995 Hyogoken-Nanbu(Kobe)earthquake using 3D finite element method[C]//Proc.2nd international symposium on the effect of surface geology on seismic motion.Japan:Yokohama,1353-1360.
Komatitsch D,Liu Q Y,Tromp J,et al.2012.Simulations of ground motion in the Los Angeles Basin based upon the spectral-element method[J].Bulletin of the Seismological Society of America,94(1):187-206.
Pitarka A,Irikura K,Iwata T,et al.1998.Three-dimensional simulation of the near-fault ground motion for the 1995 Hyogoken-Nanbu(Kobe),Japan,earthquake[J].Bulletin of the Seismological Society of America,88(2):428-440.
Rodgers A J,Petersson N A,Pitarka A,et al.2019.Broadband(0-5 Hz)fully deterministic 3D ground-motion simulations of a Magnitude 7.0 Hayward Fault Earthquake:Comparison with empirical ground-motion models and 3D path and site effects from source normalized Intensities[J].Seismological Research Letters,90(3):1268-1284.
Stupazzini M,Paolucci R,Igel H.2009.Near-fault earthquake ground-motion simulation in the Grenoble Valley by a high-performance spectral element code[J].Bulletin of the Seismological Society of America,99(1):286-301.

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Last Update: 2022-07-01