A new structural damage detection method based on statistical moments

被引：0

作者：

Zhang, J. ^{[1
]}

Xu, Y. L. ^{[1
]}

Xia, Y. ^{[1
]}

Li, J. ^{[1
]}

机构：

[1] Hong Kong Polytech Univ, Dept Civil & Struct Engn, Kowloon, Hong Kong, Peoples R China

来源：

PROCEEDINGS OF INTERNATIONAL CONFERENCE ON HEALTH MONITORING OF STRUCTURE, MATERIALS AND ENVIRONMENT, VOLS 1 AND 2 | 2007年

关键词：

damage detection; statistical moment; sensitivity; measurement noise;

D O I：

暂无

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper presents a new structural damage detection method based on the statistical moments of dynamic responses of a structure under random excitation. The principle of new method is put for-ward in terms of multi-degree-of-freedom (MDOF) systems. The sensitivity of statistical moment to structural damage is studied for different types of structural responses and different orders of statistical moments. The effect of measurement noise on damage detection is also ascertained. Numerical examples show that the fourth-order moments of story drifts can be used to accurately identify both location and severity of structural stiffness reduction of a shear building. A significant advantage of the proposed damage detection method lies in that it is not sensitive to measurement noise.

引用

页码：168 / +

页数：2

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