[1]耿方方,丁幼亮,谢辉,等.近断层地震动作用下长周期结构的地震动强度指标[J].东南大学学报(自然科学版),2013,43(1):203-208.[doi:10.3969/j.issn.1001-0505.2013.01.037]
 Geng Fangfang,Ding Youliang,Xie Hui,et al.Ground motion intensity indices for long period structures subjected to near-fault ground motion[J].Journal of Southeast University (Natural Science Edition),2013,43(1):203-208.[doi:10.3969/j.issn.1001-0505.2013.01.037]
点击复制

近断层地震动作用下长周期结构的地震动强度指标()
分享到:

《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
43
期数:
2013年第1期
页码:
203-208
栏目:
土木工程
出版日期:
2013-01-20

文章信息/Info

Title:
Ground motion intensity indices for long period structures subjected to near-fault ground motion
作者:
耿方方1丁幼亮1谢辉1李爱群1宋建永2李万恒2王玉倩2
1东南大学混凝土及预应力混凝土结构教育部重点实验室, 南京 210096; 2交通运输部公路科学研究院, 北京 100088
Author(s):
Geng Fangfang1 Ding Youliang1 Xie Hui1 Li Aiqun1 Song Jianyong2 Li Wanheng2 Wang Yuqian2
1Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 210096, China
2Research Institute of Highway Ministry of Transport, Beijing 100088, China
关键词:
地震动强度指标 近断层地震动 时程分析 相关系数
Keywords:
ground motion intensity index near-fault ground motion time history analysis correlation coefficient
分类号:
TU375
DOI:
10.3969/j.issn.1001-0505.2013.01.037
摘要:
选取国内外13次地震的26个近断层地震动记录,研究适用于长周期结构的地震动强度指标.采用时程分析法计算了自振周期3.0~8.0 s的单自由度结构的加速度、速度和位移响应,研究了峰值加速度、均方根加速度、峰值速度、均方根速度、峰值速度与峰值加速度比、峰值位移和均方根位移与这些响应最大值的相关性.在此基础上以宿迁某高层隔震建筑为对象,进一步考察实际长周期结构的最大地震响应与地震动强度指标的相关性.研究结果表明:不同地震动强度指标与长周期结构最大响应的相关性差别很大,加速度型地震动强度指标的相关性最差,速度型强度指标随着结构周期的增加其相关性愈差,位移型强度指标随着结构周期的增加其相关性愈好.相比峰值加速度和峰值速度强度指标,近断层地震动作用下长周期结构时程分析时,选择位移型地震动强度指标用于选择和调整地震动输入更为合理.
Abstract:
26 suites of near-fault ground motions which are collected in the 13 earthquakes were adopted to investigate the ground motion intensity indices applicable for long period structures. The acceleration, velocity and displacement responses of SDOF systems with the natural period from 3.0 to 8.0 s were calculated using the time history analysis. Then the correlations between the maximum responses and the ground motion intensity indices including the peak ground acceleration, root-mean-square of acceleration, peak ground velocity, root-mean-square of velocity, the ratio of peak ground velocity to peak ground acceleration, peak ground displacement, root-mean-square of displacement were analyzed. Furthermore, the correlation between the maximum responses of a high-rise isolation building in Suqian and these intensity indices were analyzed. The results show that the different intensity indices have various correlations with the maximum responses of long period structures. The correlations of acceleration-related intensity indices are the worst and the correlations of velocity-related intensity indices become worse with the increase of period, whereas the correlations of displacement-related intensity indices show high linearity with the increase of period. In contrast to the peak ground acceleration and peak ground velocity, displacement-related intensity indices are more reasonable to be used for selecting and adjusting ground motion inputs for time history analysis of long period structures subjected to near-fault motions.

参考文献/References:

[1] 谢俊举, 温增平, 李小军,等. 基于小波方法分析汶川地震近断层地震动的速度脉冲特性[J]. 地球物理学报, 2012, 55(6): 1963-1972.
  Xie Junju, Wen Zengping, Li Xiaojun, et al. Analysis of velocity pulses for near-fault strong motions from the Wenchuan earthquake based on wavelet method [J]. Chinese Journal of Geophysics, 2012, 55(6): 1963-1972.(in Chinese)
[2] 杨迪雄, 赵岩. 近断层地震动破裂向前方向性与滑冲效应对隔震建筑结构抗震性能的影响[J]. 地震学报, 2010, 32(5): 579-587.
  Yang Dixiong, Zhao Yan. Effects of rupture forward directivity and filing step of near-fault ground motions on seismic performance of base-isolated building structures [J]. Acta Seismologica Sinica, 2010, 32(5): 579-587.(in Chinese)
[3] Mavroeidis G P, Papageorgiou A S. A mathematical representation for near-fault ground motions [J]. Bulletin of the Seismological Society of America, 2003, 93(3): 1099-1131.
[4] Neumann F. Some new concepts of strong earthquake motion [J]. Geological Society of America Bulletin, 1952, 63(12): 1355-1356.
[5] Housner G W, Jennings P C. The capacity of extreme earthquake motions to damage structures [C]// Structural and Geotechnical Mechanics: A Volume Honoring Nathan M Newmark. Englewood Cliffs, New Jersey, USA: Prentice Hall, 1977: 102-116.
[6] Riddell R. On ground motion intensity indices [J]. Earthquake Spectra, 2007, 23(1): 147-173.
[7] 郝敏, 谢礼立, 李伟. 基于砌体结构破坏损伤的地震烈度物理标准研究[J]. 地震工程与工程振动, 2007, 27(5): 27-32.
  Hao Min, Xie Lili, Li Wei. Study on physical measure of seismic intensity based on damage to masonry structures [J]. Journal of Earthquake Engineering and Engineering Vibration, 2007, 27(5): 27-32.(in Chinese)
[8] 叶列平, 马千里, 缪志伟. 结构抗震分析用地震动强度指标的研究[J]. 地震工程与工程振动, 2009, 29(4): 9-22.
  Ye Lieping, Ma Qianli, Miao Zhiwei. Study on earthquake intensities for seismic analysis of structures [J]. Journal of Earthquake Engineering and Engineering Vibration, 2009, 29(4): 9-22.(in Chinese)
[9] Takewaki I, Tsujimoto H. Scaling of design earthquake ground motions for tall buildings based on drift and input energy demands [J]. Earthquake and Structures, 2011, 2(2): 171-187.
[10] Kramer S L. Geotechnical earthquake engineering [M]. Upper Saddle River, New Jersey, USA: Prentice-Hall, 1996.
[11] Sucuoglu H, Nurtug A. Earthquake ground motion characteristics and seismic energy dissipation [J]. Earthquake Engineering and Structural Dynamics, 1995, 24(9): 1195-1213.

备注/Memo

备注/Memo:
作者简介: 耿方方(1983—),女,博士生;丁幼亮(联系人),男,博士,副研究员,博士生导师,civilding@163.com.
基金项目: 国家自然科学基金资助项目(51178100)、“十二五”交通运输重大科技专项资助项目(2011318223170)、江苏省自然科学基金资助项目(BK2011141)、江苏省高校“青蓝工程”优秀青年骨干教师资助项目、东南大学重大科学研究引导基金资助项目.
引文格式: 耿方方,丁幼亮,谢辉,等.近断层地震动作用下长周期结构的地震动强度指标[J].东南大学学报:自然科学版,2013,43(1):203-208. [doi:10.3969/j.issn.1001-0505.2013.01.037]
更新日期/Last Update: 2013-01-20