Damage detection in a post tensioned concrete beam - Experimental investigation

被引：41

作者：

Limongelli, M. P. ^{[1
]}

Siegert, D. ^{[2
]}

Merliot, E. ^{[2
]}

Waeytens, J. ^{[2
]}

Bourquin, F. ^{[2
]}

Vidal, R. ^{[3
]}

Le Corvec, V. ^{[4
]}

Gueguen, I. ^{[5
]}

Cottineiu, L. M. ^{[5
]}

机构：

[1] Politecn Milan, Dept Architecture Built Environm & Construct Engn, Milan, Italy

[2] Univ Paris Est, IFSITAR, Paris, France

[3] VINCI, ADVITAM, Paris, France

[4] NECS, Paris, France

[5] LUNAM Univ, IFSTTAR, Nantes, France

来源：

ENGINEERING STRUCTURES | 2016年 / 128卷

关键词：

Damage detection; Post-tensioned beam; Experimental tests; Modal frequency; Bending stiffness; VIBRATION;

D O I：

10.1016/j.engstruct.2016.09.017

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The paper deals with the results of an experimental campaign carried out on a post tensioned concrete beam with the aim of investigating the possibility to detect early warning signs of deterioration based on static and/or dynamic tests. The beam was tested in several configurations aimed to reproduce 5 different phases of the 'life' of the beam: in the original undamaged state, under increasing loss of tension in the post tensioning cables, during and after the formation of cracks at mid span, after a strengthening intervention carried out by means of a second tension cable, during and after the formation of further cracks on the strengthened beam. Responses of the beam were measured by an extensive set of instruments consisting of accelerometers, inclinometers, displacement transducers, strain gauges and optical fibers. In this paper data from accelerometers and displacement transducers have been exploited. The paper presents the test program and the dynamic characterization of the beam in the different damage scenarios in terms of the first modal frequency, identified from dynamic tests and of the bending stiffness monitored during static tests. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：15 / 25

页数：11

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