[1]陈辉国,李英民.基于非均匀调制模型的完全非平稳多点地震动特性分析与模拟[J].西安建筑科技大学学报:自然科学版,2015,47(04):523-530.[doi:10.15986/j.1006-7930.2015.04.011]
　CHEN Huiguo,LI Yingmin.Characteristics analysis and simulation of non-stationary and spatially variable ground motion based on a non-uniform modulation model[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2015,47(04):523-530.[doi:10.15986/j.1006-7930.2015.04.011]
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基于非均匀调制模型的完全非平稳多点地震动特性分析与模拟()
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西安建筑科技大学学报:自然科学版[ISSN:1006-7930/CN:61-1295/TU]

卷:
47
期数:
2015年04期
页码:
523-530
栏目:
出版日期:
2015-08-31

文章信息/Info

Title:
Characteristics analysis and simulation of non-stationary and spatially variable ground motion based on a non-uniform modulation model
文章编号:
1006-7930(2015)04-0523-8
作者:
陈辉国1; 李英民2
1.后勤工程学院军事土木工程系，重庆 401311；2.重庆大学土木工程学院，重庆 400045
Author(s):
CHEN Huiguo1;  LI Yingmin2
1.Department of Civil engineering, Logistical Engineering University, Chongqing 401311, China；2.College of Civil engineering, Chongqing University, Chongqing 400045, China
关键词:
非平稳地震动; 多点地震动; 非均匀调制; 演变谱
Keywords:
non-stationary ground motion;  spatially variable ground motion;  non-uniform modulation;  evolutionary spectrum
分类号:
TU318
DOI:
10.15986/j.1006-7930.2015.04.011
文献标志码:
A
摘要:
通过引入非均匀调制函数模型，实现了对地震动时频非平稳特性起重要作用的时变功率谱的模型化，结合模型参数识别方法，验证了利用所采用非均匀调制函数模型来表征地震动时频非平稳特性的有效性．同时，利用SMART1 台阵记录，对非均匀调制函数参数的空间变化特性进行了分析，并探索了利用非均匀调制函数参数化模型实现完全非平稳多点地震动模拟的方法．算例分析表明，该方法不仅避免了传统演变谱法实现过程中对时变功率谱理论模型进行简化所带来的不足，而且可同时考虑空间地震动的相干效应、行波效应并与目标反应谱拟合较好，在实际工程中具有较强的推广应用价值．
Abstract:
By introducing a non-uniform modulation function, the time-varying power spectrum model which plays an important role in the non-stationary characteristics simulation of ground motion is implemented. Combined with the model parameter identification method, the effectiveness of the modulation function is verified and the non-stationary characteristics of ground motions have also been tested. Using SMART1 array records, the spatial variation characteristics of the non-uniform modulation function parameters are analyzed and the simulation method of the fully non-stationary spatially variable ground motion based on the non-uniform modulation function parameterized model is explored. Example analysis shows that the method not only avoids the shortcomings caused by the simplified theoretical model of time-varying power spectral during traditional evolution spectrum methods, but also takes the ground motion spatial coherence effects, wave passage effect into account. It can fit the target response spectrum better, which implies the method proposed in this paper has a strong application value in practical engineering.

参考文献/References:

[1] PRIESTLEY M B. Evolutionary spectra and non-stationary processes [J]. Journal of Sound and Vibration,1967, 6(1):86-97.
[2] DEODATIS G. Non-stationary stochastic vector processes: seismic ground motion applications[J]. Probabilistic Engineering Mechanics. 1996,11:149–168.
[3] SHINOZUKA M, DEODATIS G. Stochastic process models for earthquake ground motion[J]. Probabilistic Engineering Mechanics. 1988, 3(3): 114-123.
[4] Shinozuka M. Digital simulation of random processes and its applications[J]. Journal of Sound and Vibration 1972, 25(l), 111-128.
[5] YANG J N.Simulation of random envelope processes[J]. Sound and Vibration. 1972,25:73-85.
[6] Yamazaki F, Shinozuka M. Digital generation of non-Gaussian stochastic fields[J]. Journal of Engineering Mechanics. 1988,114:1183-97.
[7] Conte J P ,Peng B F.Fully nonstationary analytical earthquake ground motion model[J]. Journal of Engineering Mechanics. 1997,123:15-24.
[8] 钟菊芳.重大工程场地地震动输入参数研究[D].南京：河海大学博士学位论文, 2006.
ZHONG Jufang. Study of ground motion input parameters for vital engineering project [D]. Nanjing:University of Hohai, 2006.
[9] KAMEDA H. Evolutionary spectra of seismogram by multifilter[J]. Journal of the Engineering Mechanics Division, ASCE, 1975, 101 (6) :787 - 801.
[10] DEODATIS G, Simulation of ergodic multivariate stochastic processes. Journal of Engineering Mechanics.1996.122, 778–787.
[11] 林家浩, 张亚辉, 孙东科, 等.受非均匀调制演变随机激励结构响应快速精确计算[J]. 计算力学学报,1997,14(1):2-8.
LIN Jiahao, ZHANG Yahui, SUN Dongke, et al. Fast and precise computation of structural responses to non-uniformly modulated evolutionary random excitations[J]. Chinese Journal of Computational, 1997,14(1):2-8.
[12] 胡灿阳, 陈清军. 非平稳地震动的双调制模型研究[J].力学季刊,2008,29(4):530-536.
HU Canyang, CHEN Qingjun. Research on double modulation model for non-Stationary earthquake motion[J].Chinese Quarterly of Mechanics,2008,29(4) : 530-536.
[13] 楼梦麟,黄天立. 正交化经验模式分解方法[J]. 同济大学学报: 自然科学版, 2007, 35(3): 293-298.
LOU Menglin, HUANG Tianli.The orthogonal empirical mode decomposition[J.Journal of Tongji University: Natural Science, 2007,35(3):293-298.
[14] 屈铁军,王前信. SMART—1 台阵记录的自功率谱特性研究[J].世界地震工程,1995,(1):35-43.
QU Tiejun,WANG Qianxin. Study on character of power spectra of ground motion recorded at SMART1 array[J].World Earthquake Engineering,1995,(1):35-43.
[15] 屈铁军, 王君杰, 王前信.局部场地上地震动强度包线函数的特性研究[J]. 地震动与工程振动, 1994, 14(3):68-80.
QU Tiejun ,WANG Junjie ,WANG Qianxin. Study on characteristics of envelope function of ground motion in local site[J]. Earthquake Engineering Vibration,1994, 14(3): 68-80.
[16] HINDY A, NOVAK M. Pipeline response to random ground motion[J].Journal of the Engineering Mechanics Division. 1980,106(2):339-360.

备注/Memo

备注/Memo:
收稿日期：2014-04-08 修改稿日期：2015-07-31
基金项目：国家自然科学基金项目（51478068）
作者简介：陈辉国（1977-），男，博士，副教授，主要研究方向为地震工程与结构抗震．E-mail:chenhg_mail@163.com
更新日期/Last Update: 2015-10-30