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类型 应用研究 预答辩日期 2017-10-20
开始(开题)日期 2015-10-08 论文结束日期 2016-10-10
地点 逸夫建筑馆707 论文选题来源 973、863项目     论文字数 8.3 (万字)
题目 迟滞结构的恢复力辨识研究
主题词 迟滞结构,系统辨识,神经网络,遗传算法,马尔科夫链蒙特卡洛算法
摘要 随着经济全球化的增长、大城市的快速发展和基础设施系统的构建,损伤识别和系统辨识越来越成为结构健康监测和结构控制中的重要技术,尤其针对那些在自然灾害作用下的时变结构。尽管在过去几十年,文献中各种各样的方法应用于损伤识别,几乎很少会关注对不断退化系统的损伤识别。在这项研究中,我们针对迟滞结构Bouc-Wen模型和由Baber和Noori提出的捏缩效应的复杂迟滞模型提出了一种有效的辨识策略,将这种方法应用于遭受到外部激励作用的典型剪切型结构的迟滞行为的辨识研究。第一章主要介绍了系统辨识方法和它的应用范围,讨论了这种方法应用在城市系统工程的意义,介绍了结构健康监测、结构控制及系统辨识在相关领域的重要应用价值。第二章描述了Bouc-Wen类迟滞模型参数的物理意义及Bouc-Wen模型、考虑刚度和强度折减的扩展的Bouc-Wen模型及还考虑捏缩效应的Bouc-Wen-Baber-Noori模型及这些模型在单自由度系统中的变化特征。第三章我们建立了一个时变结构系统,给出了案例分析。第四章,我们通过引入“灰箱”概念,使用Saadat-Noori引入的智能参数变换辨识了一般迟滞结构的迟滞行为。第五章,我们提出了遗传算法的策略并应用于迟滞系统。第六章,我们提出了一种基于贝叶斯更新框架的马尔科夫链蒙特卡洛法,并验证了迟滞结构系统辨识结果。相关性研究和误差评估应用于参数辨识和系统辨识对比和评估。第八章,我们验证了Bouc-Wen迟滞结构的系统辨识结论,给出了未来研究的方向。
英文题目 A Study on the Identification of Hysterically Degrading Structures with General Hysteresis
英文主题词 Hysteretic Structure, System Identification, ANN, Genetic Algorithm, TMCMC
英文摘要 With the rapid development of globalized economy and increasing growth in mega cities and major infrastructure systems, damage detection schemes and system identification techniques have become increasingly important for structural health monitoring and structural control. Especially for those time varying structural systems under natural disasters. Although over the past decade significant amount of research has been reported in the literature on various methodologies for damage identification, little attention has been paid to the detection of damage in hysteretically deteriorating systems. In this research, we propose an effective strategy for Bouc-Wen Class Models of hysteretic systems and more complex hysteresis models with pinching behavior introduced by Baber and Noori. The focus of this strategy is to identify the general hysteretic behavior of a typical shear structure subjected to external excitations. Chapter 1, introduces an overview on system identification methodology and its wide application scope. Significance of this problem in urban systems engineering is discussed and an introduction on structural health monitoring, structural control, and other related areas where system identification is important are presented. In Chapter 2, the Bouc-Wen class of hysteresis models, the parametric physical implication of the Classical Bouc-Wen Model, Bouc-Wen-Baber extended model that incorporates stiffness and strength degradation, and Bouc-Wen-Baber-Noori Model generalized hysteresis that incorporated pinching characteristics are presented and analyzed to describe their smoothly varying characteristics using a single degree of freedom (SDOF) system. In Chapter 3, a model of the time varying hysteretic structural system with case study is presented. In Chapter 4, by incorporating the “Grey Box” idea, the Intelligent Parameter Varying (IPV) approach introduced by Saadat-Noori is presented to identify the hysteretic behavior of a generalized hysteresis structure. In Chapter 5, a strategy using a Genetic algorithm based method is proposed and applied to the hysteretic system. In Chapter 6, a Transitional Markov Chain Monte Carlo (TMCMC) based Bayesian Updating framework is proposed and the results of the identification for the hysteretic structural system are verified. Correlation analysis and error evaluation for the parameter identification and system identification results are given for further comparison and evaluation. In Chapter 7, we illustrate the conclusions of the system identification of the Bouc-Wen class hysteretic structures, and recommendations are made for the follow up of this research and further studies.
学术讨论
主办单位时间地点报告人报告主题
Noori课题组 2016年10月1日 逸夫建筑馆707 赵颖 The reliability analysis of a composite plate
土木工程学院 2014年4月11日 逸夫建筑馆1501 YunKyu An 结构健康监测中的激光超声成像技术
Noori课题组 2014年9月6日 逸夫建筑馆707 赵颖 Application of Wavelet to Reinforced Concrete Beam
土木工程学院 2014年10月11日 榴园宾馆新华厅 吴智深、刘伟庆 New CE Materials, Creation, Manufacture, Fabrication and Application
Noori课题组 2015年4月20日 逸夫建筑馆707 赵颖 Recent Progress on Using Wavelets
土木工程学院 2015年6月11日 逸夫建筑馆1501 David Hui Composites under harsh environment, Civil engineering and Aerospace engineering perspectives
Noori课题组 2016年1月10日 逸夫建筑馆707 赵颖 The identification of restoring forces for a shear structure using ANN
土木工程学院、江苏省工程力学重点实验室 2016年8月5日 逸夫建筑馆1501 Ming L. Wang Air-coupled Ground Penetrating Radar System Operated at Traffic Speed for Pavement and Bridge Application
     
学术会议
会议名称时间地点本人报告本人报告题目
6th World Conference on Structural Control and Monitoring组委会 2014年7月17日 巴塞罗那 A Proposed Plan for a Reliable and Effective Scheme for Corrosion Monitoring in Reinforced Concrete Structures Utilizing a Distributed Sensing
Proceedings of the 5th International Conference on Integrity-Reliability-Failure 2016年7月26日 葡萄牙 MODE SHAPE BASED DAMAGE IDENTIFICATION FOR A REINFORCED CONCRETE BEAM UNDER SEISMIC LOAD USING WAVELET COEFFICIENT DIFFERENCES
     
代表作
论文名称
Mode Shape Based Damage Identification for a Reinforced Concrete Beam Using Wavelet Coefficient Diff
Reliability Evaluation of A Laminate Composite Plate Under Distributed Pressure Using a Hybrid Resp
 
答辩委员会组成信息
姓名职称导师类别工作单位是否主席备注
刘伟庆 正高 教授 博导 南京工业大学
周叮 正高 教授 博导 南京工业大学
杨才千 正高 教授 博导 东南大学
李敏 正高 教授 博导 东南大学
孙安 正高 教授 博导 东南大学
靳慧 正高 教授 博导 东南大学
      
答辩秘书信息
姓名职称工作单位备注
汤昱川 副高 副教授 东南大学