Study on Application of Steel Fibre Reinforced Self-stressing Concrete in Transforming Old Simply Supported Bridges into Continuous System
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Bibliographic Details
| Author(s): |
Chengkui Huang
Boxin Wang Huanan He Chengnian Chen |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | 17th IABSE Congress: Creating and Renewing Urban Structures – Tall Buildings, Bridges and Infrastructure, Chicago, USA, 17-19 September 2008 | ||||
| Published in: | IABSE Congress Chicago 2008 | ||||
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| Page(s): | 324-325 | ||||
| Total no. of pages: | 6 | ||||
| Year: | 2008 | ||||
| DOI: | 10.2749/222137908796292777 | ||||
| Abstract: |
Steel Fibre Reinforced Self-stressing Concrete (SFRSSC) is a new type of fibre reinforced composite with self-expansive performance and high tensile resistance. It can be used in the old bridge reinforcement because when SFRSSC is restrained by steel bars or other terminal conditions, it can create some values of pre-stressing force to enhance the cracking moments of the continuous beams. The primary goal of this research is to apply SFRSSC to strengthen the old bridges for simply supported beams transformed into continuous system. Firstly, the computer analysis of the internal force of continuous T-beams with 5 spans is carried out. Secondly, based on the model experiments of 8 continuous T-beams with 2 spans, flexural performance of the beams reinforced by SFRSSC layers is investigated. It is concluded that flexural performance of continuous T-beams strengthened by SFRSSC is more greatly improved than that strengthened by conventional concrete. |
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| Keywords: |
bridge strengthening steel fibre self-stressing concrete composite concrete beam
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