题  目: Substructural Approach in the Condition Assessment of a Selected Part of a Structure

报告人： Professor S S Law, The Hong Kong Polytechnic University, Hong Kong

主持人：余 岭 教授

时  间： 2012年5月9日（星期三）上午10：15

地  点：蒙民伟理工楼615教室 

Synopsis

IN the assessment of a structure, information of the geometry and material of the structure should be available and the structural responses to external excitation should be recorded. All these information are input into an algorithm for the analysis. However, information of the structure may be plenty in the case of a larger structure, and the connections with the supports may not be accurately modeled. This leads to poor accuracy and sometimes not possible to evaluate the structure with existing algorithms.

The lecture will address this problem with a new technique of assessment by dividing a large structure into different substructures. A target substructure that contains some significant components for the evaluation is selected while the presence of other substructures is represented by the interface forces at the boundary (connection) with adjacent substructures. The algorithm adopted for the evaluation is based on dynamic responses (acceleration) measured from the substructure under excitation of the whole structure, and the interface force between the target substructure and its adjacent substructures are reconstructed. The accuracy of this new method is judged from the accuracy of the reconstructed interface forces and the final condition assessment results. This new technique is illustrated with two types of excitations on a bridge deck: (a) seismic excitations at the supports and (b) excitation from a moving vehicle on top of the bridge deck. 

Short Biography of Prof. S S Law:

Professor Siu-Seong Law, B.Sc., M.Ph., Ph.D.; MHKIE, MICE, MIStructE; MASCE, C. Eng.

Prof SS Law graduated with B.Sc (first class honours) and M.Ph. degrees in Civil Engineering from the University of Hong Kong and gained his Ph.D degree from the University of Bristol, U. K. He joined the Hong Kong Polytechnic in 1979, after working some time with a consulting firm, Maunsell Consultant Asia Limited, Paul Y Construction Co. Ltd, Peter Y S Pun & Associates and Ove Arup Partnership (London) since 1972. Prof Law is now a full professor in structural engineering in the Hong Kong Polytechnic University.

Prof SS Law is an international leading professor working in the field of condition assessment of structures and moving load identification based on measured information of a structure. He has completed the supervision of more than 10 PhD thesis (including 2 PhD thesis jointly with Chinese Universities) and 3 post-doctoral fellows. He is at present a Chair Professor with Beijing Jiaotong University of China.

He has been actively involved in carrying out research on general structural dynamics, inverse problems of condition and system identification, static and dynamic testing, finite element modeling, vibration mitigation, structural health monitoring, bridge structures and so on. Prof Law has published 3 books and 131 SCI journal papers with 44 published in the last five years. Up to March 2012, a total of 136 publications have been included in the SCI-expanded index with the H-index equals 20, SCIE citation number beyond 1000 and the average citation per item of 9.42. 

Prof. Siu-Seong Law简介

Siu-Seong Law教授是“桥梁移动荷载”与“结构健康监测”两个领域国际知名学者，更是这两个领域最主要的领军学者之一。他早年从香港大学获得土木工程一等荣誉学士学位和硕士学位，并从英国布里斯托大学获得土木工程博士学位。1979年加入香港理工学院工作至今，现在是香港理工大学结构工程专业的全职教授。Law教授的学术论著包括210余篇学术论文（其中136篇为SCI期刊论文）和3本专著。根据2012年3月Web of Science数据库的统计, Law教授的SCI期刊论文的H-index为20，被他人引用的次数已超过1000次，平均单篇被引次数达9.42。他7次获得香港RGC项目（其中4次连续资助），3次获得港府博士后研究计划资助，多次获得竞争性外部资助项目等，与国内外高校、科研及政府部门，特别是与华南地区的交通主管部门项目合作密切，是中山大学、华南理工大学、北京交通大学等著名高校的客座或讲座教授。

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