Shear behaviors of hollow slab beam bridges strengthened with high-performance self-consolidating cementitious composites
A novel strengthening method was proposed to improve the shear behaviors of hollow slab beam bridges through filling the hollow with high-performance self-consolidating cementitious composites. The strengthening effect was evaluated through a field loading experiment and long-term monitoring. Some important parameters were compared and analyzed before and after the strengthening, including the principal stress of the bridge web, the strain response of beam bottom, the mid-span deflection and the transverse connection between the beams. The experimental results showed that the principal stress of the bridge was decreased by more than 50% compared with that before the strengthening. Under different loading conditions, the strain response of each slab beam bottom was decreased in different degrees, with a reduction range between 20% and 60%. The mid-span deflection of the bridge decreased by 10%-25% after the strengthening. Through the analysis of the transverse distribution of the strain on the beam bottom, the strengthening method also improved the lateral connection of the bridge in a certain extent. In addition, it was found that the long-term effectiveness of the strengthening method is verified through more than a year of monitoring.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/01410296
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Supplemental Notes:
- © 2021 Published by Elsevier Ltd. Abstract reprinted with permission of Elsevier.
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Authors:
- Yang, Jing
- Hou, Peng
- Pan, Yong
- Zhang, Honglei
- Yang, Caiqian
- Hong, Wan
- Li, Kefeng
- Publication Date: 2021-9-1
Language
- English
Media Info
- Media Type: Web
- Features: Figures; Photos; References; Tables;
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Serial:
- Engineering Structures
- Volume: 242
- Issue Number: 0
- Publisher: Elsevier
- ISSN: 0141-0296
- Serial URL: http://www.sciencedirect.com/science/journal/01410296
Subject/Index Terms
- TRT Terms: Beams; Bridges; Composite materials; High performance concrete; Self compacting concrete; Shear properties; Slabs
- Subject Areas: Bridges and other structures; Highways; Materials;
Filing Info
- Accession Number: 01776910
- Record Type: Publication
- Files: TRIS
- Created Date: Jul 23 2021 3:23PM