Damage identification of slab–girder structures: experimental studies

Wang, Ying and Hao, Hong 2013, Damage identification of slab–girder structures: experimental studies, Journal of civil structural health monitoring, vol. 3, no. 2, pp. 93-103.

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Title Damage identification of slab–girder structures: experimental studies
Author(s) Wang, Ying
Hao, Hong
Journal name Journal of civil structural health monitoring
Volume number 3
Issue number 2
Start page 93
End page 103
Total pages 11
Publisher Springer
Place of publication Berlin, Germany
Publication date 2013-05
ISSN 2190-5452
2190-5479
Keyword(s) slab-girder structure
shear connector
static test
vibration test
mode shape
Summary Slab–girder structures composed of steel girder and reinforced concrete slab are widely used in buildings and bridges in the world. Their advantages are largely based on the composite action through the shear connection between slab and girder. In order to assess the integrity of this kind of structures, numerous vibration-based damage identification methods have been proposed. In this study, a scaled composite slab–girder model was constructed in the laboratory. Some removable shear connectors were specially designed and fabricated to connect the girder and slab that were cast separately. Then, a two-stage experiment including both static and vibration tests was performed. In the first stage, vibration tests were conducted under different damage scenarios, where a certain number of shear connectors at certain locations were removed step by step. In the second stage, two sets of hydraulic loading equipment were used to apply four-point static loads in the test. The loads are increased gradually until concrete slab cracked. The loading histories as well as deflections at different points of the beam are recorded. Vibration test was carried out before and after concrete cracking. Experimental results show that the changes of mode shapes and relative displacement between slab and girder may be two promising parameters for damage identification of slab–girder structures.
Language eng
Field of Research 090506 Structural Engineering
Socio Economic Objective 870501 Civil Building Management and Services
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2013, Springer
Persistent URL http://hdl.handle.net/10536/DRO/DU:30051768

Document type: Journal Article
Collection: School of Engineering
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