Prestress and excitation force identification in a prestressed concrete box–girder bridge
Article
Xiang, Ziru, Chan, Tommy H. T., Thambiratnam, David P. and Nguyen, Andy. 2017. "Prestress and excitation force identification in a prestressed concrete box–girder bridge." Computers and Concrete. 20 (5), pp. 617-625. https://doi.org/10.12989/cac.2017.20.5.617
| Article Title | Prestress and excitation force identification in a prestressed concrete box–girder bridge |
|---|---|
| ERA Journal ID | 4175 |
| Article Category | Article |
| Authors | Xiang, Ziru (Author), Chan, Tommy H. T. (Author), Thambiratnam, David P. (Author) and Nguyen, Andy (Author) |
| Journal Title | Computers and Concrete |
| Journal Citation | 20 (5), pp. 617-625 |
| Number of Pages | 9 |
| Year | 2017 |
| Place of Publication | Korea |
| ISSN | 1598-818X |
| 1598-8198 | |
| Digital Object Identifier (DOI) | https://doi.org/10.12989/cac.2017.20.5.617 |
| Web Address (URL) | http://koreascience.or.kr/article/ArticleFullRecord.jsp?cn=KJKHDQ_2017_v20n5_617 |
| Abstract | Prestress force identification (PFI) is crucial to maintain the safety of prestressed concrete bridges. A synergic identification method has been proposed recently by the authors that can determine the PF and the excitation force simultaneously in prestressed concrete beams with good accuracy. In this paper, the ability of this method in the application with prestressed concrete box-girder bridges is demonstrated. A reasonable assumption is made to capture the similarity of the dynamic behavior of the prestressed concrete box-girder bridge and a beam under a certain loading scenario, and the feasibility of this method for application in a prestressed box-girder bridge is affirmed. A comprehensive laboratory test program is conducted, and the effects of PF, excitation, measuring time and uncertainties are studied. Results show that the proposed method can predict the PF and the excitation force in a prestressed concrete box-girder accurately and has a great robustness against uncertainties. |
| Keywords | prestress force identification (PFI), moving load identification, synergic identification, virtual distortion method |
| ANZSRC Field of Research 2020 | 400510. Structural engineering |
| Public Notes | Copyright © 2017 Techno-Press, Ltd. |
| Byline Affiliations | Queensland University of Technology |
| Institution of Origin | University of Southern Queensland |
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