复杂地形场地上多维多点地震动模拟研究

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振动与冲击 ›› 2016, Vol. 35 ›› Issue (14) : 195-201.

论文

复杂地形场地上多维多点地震动模拟研究

田利，盖霞

作者信息 +

Study on Multi-support and Multi-dimensional Ground Motions in Complicated Terrain Area

Tian Li, Gai Xia

Author information +

文章历史 +

摘要

本文研究了复杂地形场地上多维多点地震动的模拟。将基岩加速度反应谱转换成相应的功率谱，介绍了多土层多维地震波的传播理论和基岩相干函数的选取。利用基岩功率谱与相干函数，给出了复杂地形场地上多维多点地震动的模拟方法。针对一算例进行分析，得到了非同类多土层复杂地形场地上的三个点地震动加速度时程曲线、功率谱以及不同分量的放大函数，通过比较功率谱和相干函数的吻合程度，验证了研究成果的准确性。该研究成果可应用于复杂地形场地上大跨度结构的多维多点地震动的分析。

Abstract

The simulation of multi-support and multi-dimensional ground motions in a complicated terrain area is studied. The power spectrum on base rock is obtained from the acceleration response spectra. The wave propagation theory of multi-dimensional ground motions with multiple soil layers and the selection of coherence function on base rock are introduced. Using the power spectrum and the coherence function on base rock, the simulation method of multi-support and multi-dimensional ground motions in the complicated terrain area is carried out. According to the analysis of a calculation case, the time history curves and power spectra of three different points in the complicated terrain area with multiple soil layers are generated. The amplification functions of different components of seismic wave are shown. Through the comparison of the coincidence degree of the power spectra and the coherence function, the accuracy of results is verified. The research results could be applied to the seismic analysis of large span structures in complicated terrain areas.

导出引用

田利，盖霞. 复杂地形场地上多维多点地震动模拟研究[J]. 振动与冲击, 2016, 35(14): 195-201

Tian Li, Gai Xia. Study on Multi-support and Multi-dimensional Ground Motions in Complicated Terrain Area[J]. Journal of Vibration and Shock, 2016, 35(14): 195-201

参考文献

[1] 周正华,张艳梅,孙平善,杨柏坡. 断层对震害影响的研究[J]. 自然灾害学报,2003,04:20-24
ZHOU Zheng-hua, ZHAGN Yan-mei, SUN Ping-shan, YANG Bai-po. Study on effect of fault on seismic damage[J] Journal of Natural Disasters, 2003,04:20-24.(In Chinese)
[2] 刘必灯. 考虑地形影响的多点输入下大跨桥梁地震反应及碰撞反应分析[D]. 中国地震局工程力学研究所硕士学位论文, 2008.
LIU Bi-deng. Seismic responses and collision responses analysis of long-span bridges for multi-supported excitations and topographic effects [D]. Institute of Engineering Mechanics, China Earthquake Administration, Master’s Degree Thesis, 2008. (In Chinese)
[3] 李渝生,黄润秋. 5.12汶川大地震损毁城镇的震害效应与重建选址问题[J]. 岩石力学与工程学报,2009,07:1370-1376.
LI Yu-sheng, HUANG Run-qiu. Earthquake Damage Effects of Towns and Reconstruction Site Seletion in Wenchuan Earthquake on May 12，2008 [J]. Journal of Rock Mechanics and Geotechnical Engineering, 2009,07:1370-1376. (In Chinese)
[4] Hartzell S H, Carver D L, King K W. Initial investigation of site and topographic effects at Robinwood Ridge, California[J]. Bulletin of the Seismological Society of America, 1994, 84(5): 1336-1349.
[5] 李小军,彭青. 不同类别场地地震动参数的计算分析[J].地震工程与工程振动,2001,01:29-36.
LI Xiao-jun, PENG Qing. Calculation and analysis of earthquake ground motion Parameters for different site categories [J]. Earthquake Engineering and Engineering Vibration, 2001,01:29-36. (In Chinese)
[6] 姚凯,卢大伟,刘旭宙等. 利用汶川余震流动观测资料探讨地形对峰值加速度的影响[J]. 西北地震学报,2009,01:46-50.
YAO Kai, LU Da-wei, LIU Xu-zhou, et al, Using Observational Data from the Aftershocks of Wenchuan Great Earthquake to Study the Influence of Geography on Peak Ground Acceleration [J]. Northwestern Seismological Journal, 2009,01:46-50. (In Chinese)
[7] 车伟, 罗奇峰.复杂地形条件下地震波的传播研究[J].岩土工程学报, 2008, 30 (9): 1333~1337.
CHE Wei, LUO Qi-feng. Seismic wave propagation in complex topography. Chinese Journal of Geotechnical and Engineering, 2008, 30 (9): 1333~1337. (In Chinese)
[8] Hao H, Nawawi C. Spatial ground motion variation site amplification effects[C]. Proceedings of a conference held by the Australian earthquake engineering society, Albury, 2005.
[9] Hao H, Nawawi C. Modeling of earthquake ground motion spatial variation on uneven sites with varying soil conditions[C]. The 9th International Symposium on Structural Engineering for Yong Experts, Fuzhou, 2006.
[10] Bi K, Hao H, Chouw N. Required separation distance between decks and at abutments of a bridge crossing a canyon site to avoid seismic pounding[J]. Earthquake Engineering and Structural Dynamics, 2010, 39(3): 303-323.
[11] 周飞秦. 基于相位差谱的人工地震动拟合与桥梁地震响应分析[D]. 中南大学硕士学位论文, 2010.
ZHOU Fei-qin. Generation of ground motion and seismic response analusis of bridge based on phase difference spectrum [D]. Central South University Master’s Degree Thesis, 2010. (In Chinese)
[12] 白凤龙. 空间变化地震动激励下大跨度结构的反应研究[D].大连理工大学,2010.
BAI Feng-long. Study on Seismic Response of Large-Span Structures Subjected to Spatially Varying Ground Motions [D]. Dalian University of Technology Doctor’s Degree Thesis,2010. (In Chinese)
[13] 周正华, 周雍年, 赵刚. 强震近场加速度峰值比和反应谱统计分析[J]. 地震工程与工程振动, 2002, 22(3): 15-18.
ZHOU Zheng-hua, ZHOU Yong-nian, ZHAO Gang. Statistical analysis of peak ratios and response spectra of near-field accelerograms [J]. Earthquake Engineering and Engineering Vibration, 2002, 22(3): 15-18. (In Chinese)
[14] 石树中, 沈建文, 楼梦麟. 基岩场地强地面运动加速度反应谱统计特征[J]. 同济大学学报, 2002, 30(11): 1300-1304.
SHI Shu-zhong, SHEN Jian-wen, LOU Meng-lin. Statistic features of response spectra of acceleration strong ground motion at rock sites [J]. Journal of Tongji University, 2003, 30(11): 1300-1304. (In Chinese)
[15] 田利,马瑞升,李庆伟. 山丘谷地交错场地上多点地震动模拟研究[J]. 地震工程与工程振动,2014,03:18-24.
TIAN Li, MA Rui-sheng, LI Qing-wei. Study on Multi-support Ground Motions Simulation on a Hill and Valley Staggered Site [J]. Earthquake Engineering and Engineering Vibration, 2014,03:18-24. (In Chinese)
[16] 李宏男. 结构多维抗震理论与设计方法[M ]. 北京: 科学出版社,2006.
LI Hong-nan. Theoretical Analysis and Design of Structures to Multiple Earthquake Excitations[M]. Beijing:Science Press, 1998. (In Chinese)
[17] 江近仁,洪峰. 功率谱与反应谱的转换和人造地震波[J]. 地震工程与工程振动,1984,03:1-11.
JIANG Jin-ren, Hong Feng, Conversion between Power Spectrum and Response Spectrum and Artificial Earthquakes [J]. Earthquake Engineering and Engineering Vibration, 1984,03:1-11. (In Chinese)
[18] 丁海平, 刘启方, 金星等. 基岩地震动的一个相干函数模型-倾滑断层情形[J]. 地震工程与工程振动, 2003, 23(2): 8-11.
DING Hai-ping, LIU Qi-fang, JIN Xing, et al, A coherency model of ground motion on base-rock corresponding to dip-slip fault [J]. Earthquake Engineering and Engineering Vibration, 2003, 23 (2): 8-11. (In Chinese)
[19] 丁海平, 刘启方, 金星等. 基岩地震动的一个相干函数模型-走滑断层情形[J]. 地震学报, 2004, 26(1): 62-67.
DING Hai-ping, LIU Qi-fang, et al, YUAN Yi-fan. A coherency fuction model of ground motion at base rock corresponding to strike-slip fault [J]. Acta Seismologica Sinica, 2004, 26(1): 62-67. (In Chinese)
[20] 霍俊荣,胡聿贤,冯启民. 地面运动时程强度包络函数的研究[J]. 地震工程与工程振动,1991,01:1-12.
HUO Jun-rong, HU Yu-xian, FENG Qi-min. Study on Envelope Function of Acceleration Time History[J]. Earthquake Engineering and Engineering Vibration, 1991,01:1-12 (In Chinese)
[21] Hao H, Oliveira C S, Penzien J. Multiple-station ground motion processing and simulation based on SMART-I array data [J].Nuclear Engineering and Design,1989,111: 293-310.
[22] Penzien J, Watabe M. Characteristics of 3-dimensional earthquake ground motions[J]. Earthquake Engineering and Structural Dynamics, 1974, 3(4): 365-373.