[1]于彦彦,丁海平.盆地深度对盆地地表地震动及次生面波的影响[J].地震工程与工程振动,2021,41(03):147-156.[doi:10.13197/j.eeev.2021.03.147.yuyy.015]
 YU Yanyan,DING Haiping.Effects of basin depth on seismic ground motion and basin-induced surface wave[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2021,41(03):147-156.[doi:10.13197/j.eeev.2021.03.147.yuyy.015]
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盆地深度对盆地地表地震动及次生面波的影响
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《地震工程与工程振动》[ISSN:/CN:]

卷:
41
期数:
2021年03
页码:
147-156
栏目:
论文
出版日期:
2021-06-30

文章信息/Info

Title:
Effects of basin depth on seismic ground motion and basin-induced surface wave
作者:
于彦彦1 丁海平12
1. 苏州科技大学 江苏省结构工程重点实验室, 江苏 苏州 215011;
2. 中国地震局工程力学研究所, 黑龙江 哈尔滨 150080
Author(s):
YU Yanyan1 DING Haiping12
1. Key Laboratory of Structure Engineering of Jiangsu Province, Suzhou University of Science and Technology, Suzhou 215011, China;
2. Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China
关键词:
Rayleigh面波盆地深度地震动放大效应
Keywords:
Rayleigh wavebasin depthground motionamplification effect
分类号:
P315.9
DOI:
10.13197/j.eeev.2021.03.147.yuyy.015
摘要:
采用显式有限元与透射边界相结合的方法,以及一种同时考虑频率、视波速及极化特征的Rayleigh面波提取方法,研究了盆地深度d对盆地地面运动、盆地放大效应及次生面波的影响。结果表明:相比水平成层模型,紧邻盆地边缘区域的地震动被抑制,抑制区的范围随d的增加逐渐扩大。对水平分量,盆地地表位移峰值放大1.1~1.25倍,最大放大系数(AF)随d的增加而减小,其位置从盆地边缘向内部移动。对垂直分量,峰值可达一维模型水平分量的0.92倍,最大AF位于盆地边缘,且平均AF随盆地深度的增加而增大。随盆地深度的增加,水平和垂直分量的面波幅值均增大。面波幅值最大值出现于盆地中间区域,同时在盆地内有明显振荡。盆地深度较小时,基底多次反射体波引起多次面波生成,显著延长面波持时。水平分量的面波幅值与地震动峰值之比随盆地深度的增大而增加,最大比值0.7左右;垂直分量这一比值在盆地内部基本维持在0.65上下。
Abstract:
Effects of basin depth d on basin ground motion and amplification effect, as well as the basin-induced surface wave (Rayleigh wave) are investigated by explicit finite element method coupled with multi-transmitting formula, and a new surface wave extraction method considering the frequency, apparent velocity, and polarization characteristic. The results show that ground motions of area very close to the basin edge are suppressed compared with the horizontal stratified model, and the suppression range become enlarger as the increasing d. For horizontal component, surface displacement amplitude of the basin model can be amplified by up to 1.1~1.25, and the maximum amplification factor (AF) decreases with growing d, accompanied by a location shift towards the basin internal region. For vertical component, its maximum amplitude can reaches about 0.92 times that of 1D horizontal stratified model. The greatest amplification always occur near the basin edge, and averaging AF increases with d. With the growing of basin depth, surface wave amplitudes (SWA) of both horizontal and vertical components increases accordingly. The maximum SWA appears inside the basin, and its distribution shows obvious oscillation. For smaller basin depth model, multi-channel surface waves can be observed due to the multiple wave reflections at the basin base, which considerably lengthened the surface wave durations. The ratio of SWA to real motion horizontally increases with larger basin depth, with a maximum value of 0.7, while this value stays close to 0.65 vertically inside the basin.

参考文献/References:

[1] YUAN Y F, YANG B P, HUANG S D. Damage distribution and estimation of ground motion in Shidian (China) basin[C]//Proceedings of the International Symposium on the Effects of Surface Geology on Seismic Motion, Vol. I, 1992, Odawara:281-286.
[2] ROTEN D, F? D, CORNOU C, et al. Two-dimensional resonances in Alpine valleys identified from ambient vibration wavefields[J]. Geophysical Journal International, 2006, 165(3):889-905.
[3] ANDERSON J G, BODIN P, BRUNE J N, et al. Strong ground motion from the michoacan, mexico,earthquake[J]. Science, 1986, 233(4768):1043-1049.
[4] 黄妍, 陈彦阳, 王彦宾. 柴达木盆地东部地震地面运动放大效应[J]. 地震工程学报, 2017, 39(3):534-544. HUANG Yan, CHEN Yanyang, WANG Yanbin. Amplification effect of seismic ground motion at the eastern part of Qaidam Basin[J].China Earthquake Engineering Journal, 2017, 39(3):534-544. (in Chinese)
[5] THORNE L, TERRY C W. Modern Global Seismology[M]. San Diego:Academic Press, 1995.
[6] GAO S, LIU H, DAVIS P M, et al. Localized amplification of seismic waves and correlation with damage due to the Northridge earthquake:evidence for focusing in Santa Monica[J]. Bull. Seism. Soc. Am., 1996, 86(1B):S209-S230.
[7] KAWASE H. The cause of the damage belt in Kobe: "The basin-edge effect," constructive interference of the direct S-wave with the basin-induced diffracted/Rayleigh waves[J]. Seismological Research Letters, 1996, 67(5):25-34.
[8] BARD P Y, BOUCHON M. The two-dimensional resonance of sediment-filled valleys[J]. Bull. Seism. Soc. Am., 1985, 75(2):519-541.
[9] 陈志刚. 正交各向异性半圆形沉积谷对SH波的散射[J].地震工程与工程振动,2016, 36(2):068-74. CHEN Zhigang. Scattering of an orthotropic semi-cylindrical alluvial valley by SH waves[J]. Earthquake Engineering and Engineering Dynamics, 2016, 36(2):068-74. (in Chinese)
[10] 游昊冉, 杨笑梅. SV垂直入射时LowerHutt沉积盆地竖向地震动分析[J].地震工程与工程振动, 2019, 39(5):199-207. YOU Haoran, YANG Xiaomei. Vertical ground motion analysis of Lowerhutt sedimentary basin of SV vertical incidence[J]. Earthquake Engineering and Engineering Dynamics, 2019, 39(5):199-207. (in Chinese)
[11] ABRAHAM J R, LAI C G, PAPAGEORGIOU A. Basin-effects observed during the 2012 Emilia earthquake sequence in Northern Italy[J]. Soil Dynamics and Earthquake Engineering, 2015, 78:230-242.
[12] 王季. 基于F-K变换的井下多道瑞利波频散曲线提取[J]. 煤田地质与勘探, 2012, 40(2):75-77. WANG Ji. Dispersive curve extraction of Rayleigh wave in coal mine based on F-K transform[J]. Coal Geology and Exploration, 2012, 40(2):75-77. (in Chinese)
[13] PINNEGAR C R. Polarization analysis and polarization filtering of three-component signals with the time-frequency S transform[J]. Geophysical Journal International, 2006, 165(2):596-606.
[14] MEZA-FAJARDO K C, PAPAGEORGIOU A S, SEMBLAT J F. Identification and extraction of surface waves from three-component seismograms based on the normalized inner product[J]. Bulletin of the Seismological Society of America, 2015, 105(1):210-229.
[15] MEZA-FAJARDO K C, PAPAGEORGIOU A S. Estimation of rocking and torsion associated with surface waves extracted from recorded motions[J]. Soil Dynamics and Earthquake Engineering, 2016, 80:225-240.
[16] 于彦彦, 丁海平, 刘启方. 盆地内外介质阻抗比对盆地地表地震动及次生Rayleigh面波的影响[J]. 岩土工程学报, 2020, 42(4):667-677. YU Yanyan, DING Haiping, LIU Qifang. Effect of impedance contrast between basin sediment and surrounding rock on the seismic ground motion and basin-induced Rayleigh waves[J]. Chinese Journal of Geotechnical Engineering, 2020, 42(4):667-677. (in Chinese)
[17] BOWDEN D C, TSAI V C. Earthquake ground motion amplification for surface waves[J]. Geophysical Research Letters, 2017, 44(1):121-127.
[18] BINDI D, LUZI L, PAROLAI S, et al. Site effects observed in alluvial basins:the case of Norcia (Central Italy)[J]. Bulletin of Earthquake Engineering, 2011, 9(6):1941-1959.
[19] MOCZO P, KRISTEK J, BARD P Y, et al. Key structural parameters affecting earthquake ground motion in 2D and 3D sedimentary structures[J]. Bulletin of Earthquake Engineering, 2018, 16(6):2421-2450.
[20] LIU Q, YU Y, YIN D, et al. Simulations of strong motion in the Weihe basin during the Wenchuan earthquake by spectral element method[J]. Geophysical Journal International, 2018, 215(2):978-995.
[21] NARAYAN J P, SINGH P K. Effects of basin parameters on the spatial variation of characteristics of basin generated Rayleigh waves[J]. International Journal of Geo-Engineering, 2016, 7(1):17.
[22] 刘中宪, 尚策, 王小燕, 等. 三维沉积盆地对地震动的放大效应——间接边界元法模拟[J]. 地震学报, 2017, 39(1):111-131. LIU Zhongxian, SHANG Ce, WANG Xiaoyan, et al. Simulation on the amplification effect of a three dimensional alluvial basin on the earthquake ground motion using the indirect boundary element method[J]. Acta Seismologica Sinica, 2017, 39(1):111-131. (in Chinese)
[23] CAMPBELL K W, BOZORGNIA Y. NGA ground motion model for the geometric mean horizontal component of PGA, PGV, PGD and 5% damped linear elastic response spectra for periods ranging from 0.01 to 10 s[J]. Earthquake Spectra, 2008, 24(1):139-171.
[24] CAMPBELL K W, BOZORGNIA Y. NGA-West2 Ground Motion Model for the Average Horizontal Components of PGA, PGV, and 5% Damped Linear Acceleration Response Spectra[J]. Earthquake Spectra, 2014, 30(3):1087-1115.
[25] 廖振鹏. 工程波动理论导论[M]. 北京:科学出版社, 2002. LIAO Zhenpeng. Introduction to Wave Motion Theories in Engineering[M]. Beijing:Science Press, 2002. (in Chinese)
[26] 丁海平, 于彦彦, 郑志法. P波斜入射陡坎地形对地面运动的影响[J]. 岩土力学, 2017, 38(6):1716-1724,1732. DING Haiping, YU Yanyan, ZHENG Zhifa. Effects of scarp topography on seismic ground motion under inclined P waves[J]. Rock and Soil Mechanics, 2017, 38(6):1716-1724,1732. (in Chinese)

备注/Memo

备注/Memo:
收稿日期:2020-08-06;改回日期:2020-11-03。
基金项目:国家自然科学基金项目(51808371);江苏省高等学校自然科学研究面上项目(18KJB560017);江苏省结构工程重点实验室开放研究课题(ZD1703)
作者简介:于彦彦(1985-),男,讲师,博士,主要从事场地地震效应及波动数值模拟研究.E-mail:yyy_usts@126.com
更新日期/Last Update: 1900-01-01