Output-only modal identification of a reinforced concrete bridge from radar-based measurements

被引：114

作者：

Gentile, Carmelo ^{[1
]}

Bernardini, Giulia ^{[2
]}

机构：

[1] Politecn Milan, Dept Struct Engn, I-20133 Milan, Italy

[2] IDS Ingn Sistemi SpA, I-56122 Pisa, Italy

来源：

NDT & E INTERNATIONAL | 2008年 / 41卷 / 07期

关键词：

ambient vibration testing; bridge; interferometry; output-only modal analysis; radar;

D O I：

10.1016/j.ndteint.2008.04.005

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This paper addresses the application of a non-contact vibrometer, designed for dynamic testing and monitoring of large structures. The new system consists of a radar sensor apt to simultaneously measure the (static or dynamic) displacement of several points of a structure with high sensitivity. In this paper, the sensor and its major characteristics are first described; subsequently, application to the measurement of ambient vibration response of a concrete bridge is summarized. The correspondence between the signals simultaneously acquired from radar and accelerometers was extensively investigated: furthermore, resonant frequencies and mode shapes identified with the radar system are compared to the corresponding quantities measured with conventional sensors. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：544 / 553

页数：10

共 23 条

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