Stress Analysis of CFRP Externally Pre-Stressed Reinforcement Continuous Beam

Abstract:

An externally pre-stressed continuous box girder bridge is designed according to loading features of the continuous beam. The CFRP bars and steel strands are used to make two models for externally pre-stressed reinforcements at the supporting points. CFRP reinforcement area of Model 1 at the supporting point is 1/2 of steel strand externally pre-stressed reinforcements of model 2 at the supporting points. After the calculation, we can find that under effects of the same tension control stress and the external loads, mechanical effects of the continuous box girder bridges with CFRP bars can be equal to or better than performances of continuous box girder bridges with steel strands. They can provide references to applications of CFRP bar.

• Periodical: Advanced Materials Research (Volume 1028)
• Pages: 300-304
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1028.300
• Online since: September 2014
• Authors: Xin Zhong Wang*, Chuan Xi Li
• Keywords: CFRP, Continuous Beam, External Pre-Stressing, Model

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