长江科学院院报 ›› 2012, Vol. 29 ›› Issue (9): 34-38.DOI: 10.3969/j.issn.1001-5485.2012.09.008

• 工程安全与灾害防治 • 上一篇    下一篇

大坝服役性态原型监测数据序列的频谱分析

苏怀智1a,1b,曹其光1b,2   

  1. 1.河海大学 a 水文水资源与水利工程科学国家重点实验室; b 水利水电学院,南京210098;
    2.水资源高效利用与工程安全国家工程研究中心,南京210098
  • 收稿日期:2011-06-29 修回日期:2011-07-15 出版日期:2012-09-01 发布日期:2012-09-13
  • 作者简介:苏怀智(1973-),男,内蒙古鄂尔多斯人,教授,博士生导师,主要从事水工结构工程安全监控与服役寿命评估理论和方法的研究与教学工作
  • 基金资助:

    国家自然科学基金(51179066);新世纪优秀人才支持计划(NCET-10-0359);国家重点实验室专项经费资助项目(2009586912);中央高校基本科研业务费专项资金资助(2012B06614);江苏高校优势学科建设工程资助项目(水利工程)(YS11001)

Spectrum Analysis on Prototype Monitoring Data Sequence of Dam Behavior in Service

SU Huai-zhi1,2,  CAO Qi-guang2,3   

  1. 1.State Key Laboratory of Hydrology Water Resources and Hydraulic Engineering, Hohai University, Nanjing   210098, China;
    2.College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing   210098,China;
    3.National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety, Nanjing   210098, China
  • Received:2011-06-29 Revised:2011-07-15 Online:2012-09-01 Published:2012-09-13

摘要: 基于大坝实测性态的数据特征,开展了大坝服役性态监测数据序列的频谱分析研究,并从系统辨识的角度,构建了大坝效应量与影响量的相干关系分析模型,以期从频域内揭示大坝实测性态的时程变化规律,并对其成因作出量化解析。结合工程实例,对比分析了大坝原型监测数据序列时域分析与频域分析成果,验证了文中所述方法的可行性和有效性。

关键词: 大坝, 监测数据, 频谱分析, 相干分析

Abstract: This research was to reveal the variation regularity of observed dam behavior in the frequency domain, and to make quantitative analysis on the causes of variation. With a gravity dam as a case study, we analyzed the spectrum of monitoring data sequence of dam behavior in service, and established a model to analyze the coherence relation between effect quantity and influence quantity from the aspect of system identification. Through comparison between the results of time-domain analysis and frequency domain analysis of prototype monitoring data sequence, we confirmed the feasibility and validity of this approach.

Key words: dam, monitoring data, spectrum analysis, coherence analysis

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