Damage detection of shear connectors in bridge structures with transmissibility in frequency domain
Shear connectors are generally used to link the slab and girder together in slab-on-girder bridge structures. Damage of shear connectors in such structures will result in shear slippage between the slab and girder, which significantly reduces the load-carrying capacity of bridges. A damage detection...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Published: |
World Scientific Publishing Co. Pte. Ltd.
2014
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| Online Access: | http://hdl.handle.net/20.500.11937/21550 |
| _version_ | 1848750620674097152 |
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| author | Li, Jun Hao, Hong Xia, Y. Zhu, P. |
| author_facet | Li, Jun Hao, Hong Xia, Y. Zhu, P. |
| author_sort | Li, Jun |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Shear connectors are generally used to link the slab and girder together in slab-on-girder bridge structures. Damage of shear connectors in such structures will result in shear slippage between the slab and girder, which significantly reduces the load-carrying capacity of bridges. A damage detection approach based on transmissibility in frequency domain is proposed in this paper to identify the damage of shear connectors in slab-on-girder bridge structures with or without reference data from the undamaged structure. The transmissibility, which is an inherent system characteristic, indicates the relationship between two sets of response vectors in frequency domain. Measured input force and acceleration responses from hammer tests are analyzed to obtain the frequency response functions at the slab and girder sensor locations by the experimental modal analysis. The transmissibility matrix that relates the slab response to the girder response is then derived. By comparing the transmissibility vectors in undamaged and damaged states, the damage level of shear connectors can be identified. When the measurement data from the undamaged structure are not available, a study with only the measured response data in the damaged state for the condition assessment of shear connectors is also conducted. Numerical and experimental studies on damage detection of shear connectors linking a concrete slab to two steel girders are conducted to validate the accuracy and efficiency of the proposed approach. The results demonstrate that the proposed method can be used to identify shear connector damages accurately and efficiently. The proposed method is also applied to the condition evaluation of shear connectors in a real composite bridge with in-field testing data. |
| first_indexed | 2025-11-14T07:39:44Z |
| format | Journal Article |
| id | curtin-20.500.11937-21550 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:39:44Z |
| publishDate | 2014 |
| publisher | World Scientific Publishing Co. Pte. Ltd. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-215502019-02-19T05:35:00Z Damage detection of shear connectors in bridge structures with transmissibility in frequency domain Li, Jun Hao, Hong Xia, Y. Zhu, P. Shear connectors are generally used to link the slab and girder together in slab-on-girder bridge structures. Damage of shear connectors in such structures will result in shear slippage between the slab and girder, which significantly reduces the load-carrying capacity of bridges. A damage detection approach based on transmissibility in frequency domain is proposed in this paper to identify the damage of shear connectors in slab-on-girder bridge structures with or without reference data from the undamaged structure. The transmissibility, which is an inherent system characteristic, indicates the relationship between two sets of response vectors in frequency domain. Measured input force and acceleration responses from hammer tests are analyzed to obtain the frequency response functions at the slab and girder sensor locations by the experimental modal analysis. The transmissibility matrix that relates the slab response to the girder response is then derived. By comparing the transmissibility vectors in undamaged and damaged states, the damage level of shear connectors can be identified. When the measurement data from the undamaged structure are not available, a study with only the measured response data in the damaged state for the condition assessment of shear connectors is also conducted. Numerical and experimental studies on damage detection of shear connectors linking a concrete slab to two steel girders are conducted to validate the accuracy and efficiency of the proposed approach. The results demonstrate that the proposed method can be used to identify shear connector damages accurately and efficiently. The proposed method is also applied to the condition evaluation of shear connectors in a real composite bridge with in-field testing data. 2014 Journal Article http://hdl.handle.net/20.500.11937/21550 10.1142/S0219455413500612 World Scientific Publishing Co. Pte. Ltd. fulltext |
| spellingShingle | Li, Jun Hao, Hong Xia, Y. Zhu, P. Damage detection of shear connectors in bridge structures with transmissibility in frequency domain |
| title | Damage detection of shear connectors in bridge structures with transmissibility in frequency domain |
| title_full | Damage detection of shear connectors in bridge structures with transmissibility in frequency domain |
| title_fullStr | Damage detection of shear connectors in bridge structures with transmissibility in frequency domain |
| title_full_unstemmed | Damage detection of shear connectors in bridge structures with transmissibility in frequency domain |
| title_short | Damage detection of shear connectors in bridge structures with transmissibility in frequency domain |
| title_sort | damage detection of shear connectors in bridge structures with transmissibility in frequency domain |
| url | http://hdl.handle.net/20.500.11937/21550 |