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.

• Record URL:
  https://doi.org/10.1016/j.engstruct.2021.112613
• Record URL:
  http://www.sciencedirect.com/science/article/pii/S014102962100763X
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01410296
• Supplemental Notes:
  • © 2021 Published by Elsevier Ltd. Abstract reprinted with permission of Elsevier.
• 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;
• 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