Strengthening of a Reinforced Concrete Bridge with a Composite of Prestressed Steel Wire Ropes Embedded in Polyurethane Cement
Publication: Journal of Performance of Constructed Facilities
Volume 35, Issue 5
Abstract
This paper describes an innovative technique, a composite of prestressed steel wire ropes (PSWRs) embedded in polyurethan-cement composite (PUC), used to strengthen a 34-year-old reinforced T-beam bridge. PUC was mixed with polyurethane raw material and cement to provide good mechanical properties. Compared to using polymer mortar for PSWR strengthening, using PUC not only increased the durability of the steel wire ropes but also reinforced the main beams in the PSWR-PUC-strengthened composite. To study the effect of polyurethane cement, one span of the bridge was reinforced by a composite of PSWRs embedded in polymer mortar (PM). Static and dynamic load tests were carried out to test the corresponding responses of the experimental bridge. A finite-element model was used to verify the bridge test results. This study showed that the structural capacity and performance of the bridge were enhanced with PSWR-PUC strengthening. Compared with PSWR-PM reinforced spans with more prestressed steel wire ropes, PSWR-PUC reinforced spans retained good structural capacity.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
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Published In
Journal of Performance of Constructed Facilities
Volume 35 • Issue 5 • October 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Dec 1, 2020
Accepted: May 26, 2021
Published online: Aug 4, 2021
Published in print: Oct 1, 2021
Discussion open until: Jan 4, 2022
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Cited by
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- Kexin Zhang, Xinyuan Shen, Jicheng Liu, Fei Teng, Guanhua Zhang, Jiawei Wang, Flexural strengthening of reinforced concrete T-beams using a composite of prestressed steel wire ropes embedded in polyurethane cement (PSWR-PUC): Theoretical analysis, Structures, 10.1016/j.istruc.2022.08.014, 44, (1278-1287), (2022).