工程力学 ›› 2018, Vol. 35 ›› Issue (8): 122-129,137.doi: 10.6052/j.issn.1000-4750.2017.04.0289

• 土木工程学科 • 上一篇    下一篇

地震动多元强度参数主成分与结构损伤的相关性分析

刘亭亭1,2, 于晓辉1,2, 吕大刚1,2   

  1. 1. 哈尔滨工业大学, 结构工程灾变与控制教育部重点实验室, 哈尔滨 150090;
    2. 哈尔滨工业大学, 智能防灾减灾工业和信息化部重点实验室, 哈尔滨 150090
  • 收稿日期:2017-04-14 修回日期:2017-06-18 出版日期:2018-08-29 发布日期:2018-08-29
  • 通讯作者: 吕大刚(1970-),男,黑龙江人,教授,博士,博导,副院长,主要从事结构可靠度、地震工程等研究(E-mail:ludagang@hit.edu.cn). E-mail:ludagang@hit.edu.cn
  • 作者简介:刘亭亭(1987-),女,黑龙江人,博士生,主要从事地震易损性和地震危险性研究(E-mail:liutingtinghit@163.com);于晓辉(1982-),男,辽宁人,副研究员,博士,硕导,主要从事地震易损性和概率风险分析研究(E-mail:yxhhit@126.com).
  • 基金资助:
    国家自然科学基金项目(51678209,51408155,51378162);国家科技支撑计划课题项目(2013BAJ08B01)

ANALYSIS OF CORRELATION BETWEEN PRINCIPAL COMPONENTS OF MULTIVARIATE EARTHQUAKE INTENSITY MEASURES AND STRUCTURAL DAMAGE

LIU Ting-ting1,2, YU Xiao-hui1,2, LÜ Da-gang1,2   

  1. 1. Key Lab of Structures Dynamic Behavior and Control of China Ministry of Education, Harbin Institute of Technology, Harbin 150090, China;
    2. Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin 150090, China
  • Received:2017-04-14 Revised:2017-06-18 Online:2018-08-29 Published:2018-08-29

摘要: 采用主成分分析方法,考虑多个地震动强度参数,综合分析多元地震动强度参数主成分与结构损伤之间的相关性。以单自由度体系为研究对象,使用三种恢复力模型,选择80条真实地震动记录作为输入,分析得到体系在地震作用下的最大位移和滞回能量。采用挑选的10个地震动强度参数,基于主成分分析方法,构造地震动强度的主成分线性组合,并对地震动强度参数主成分与结构损伤之间的相关性进行分析。结果表明:由于考虑了多个地震动强度参数,相比于单个地震动强度参数与结构损伤之间的相关性,地震动多元强度参数主成分与结构损伤之间的相关性更为稳定。

关键词: 主成分分析, 地震动强度参数, 结构损伤, 单自由度体系, 相关系数

Abstract: The correlation between multivariate earthquake intensity measures and structural damage was comprehensively studied by incorporating multiple earthquake intensity measures and adopting the principal component analysis method. The single degree of freedom systems were used as the study objects, which were defined by three kinds of constitutive models. A set of 80 real ground motion records were selected as the inputs, and the structural responses in terms of maximum displacement and hysteretic energy were calculated. Ten earthquake intensity measures were selected, and the principal component analysis method was adopted to construct the principal linear combination of the earthquake intensity measures. Then the correlation between the principal components of multivariate earthquake intensity measures and the structural damage was studied. The results show that, compared with the correlation between a single earthquake intensity measure and structural damage, the correlation between the principal components of earthquake intensity measures and the structural damage is more stable since it considers multiple earthquake intensity measures.

Key words: principal component analysis, earthquake intensity measures, structural damage, single degree of freedom system, correlation coefficient

中图分类号: 

  • P315.9
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