Analysis of Flexural Bearin g Ca pacity of Concrete Box Girders Reinforced with

Authors

CFRP Mesh End AnchorsHU Guihua, Hunan Provincial Bureau of Traffic Construction Quality and Safety Over sight , Changsha , Hunan 410116 , ChinaFollow

Abstract

Carb on fiber reinforced polymer (CFRP ) composite s have significant advantages in the reinforcement of concrete structures.It is worth systematically studying the effect and mechanism of applying this material in embedded end-anchored reinforcement of concrete box girders on improving the load-bearing capacity of the component.Based on the Abaqus finite element analysis (FEA ) platform,two numerical analysis models considering slip contact and full bonding contact between CFRP mesh and polymer mortar were established.A full-scale concrete box girder model test was conducted for validation.The results show that the FEA results are in good agreement with the experimental results.The FEA model that disregards interfacial slip within reinforcement layers prior to steel reinforcement yielding aligns more closely with experimental results,while the model accounting for slip after yielding demonstrates greater consistency with experimental findings.The influences of the bonding position,bonding width,number of bottom mesh layers,and crossing angle of the U-shaped hoop on the flexural capacity of the reinforced concrete box girder were analyzed.The results show that the anchoring position and anchoring width have a certain impact on the deflection and failure mode of the component,and the anchoring amount and the number of bottom mesh layers should be proportional,while the variations in the crossing angle of the anchoring strips have little effect on the flexural performance of the girder.The numerical modeling method and parameter optimization results proposed in this paper can provide a scientific basis for the design of CFRP mesh-reinforced concrete box girders.The conclusions have been validated through model tests and offer engineering reference values.

Publication Date

8-15-2025

DOI

10.14048/j.issn.1671-2579.2025.04.020

First Page

158

Last Page

165

Submission Date

August 2025

Recommended Citation

Mesh End AnchorsHU Guihua, CFRP (2025) "Analysis of Flexural Bearin g Ca pacity of Concrete Box Girders Reinforced with," Journal of China & Foreign Highway: Vol. 45: Iss. 4, Article 20.
DOI: 10.14048/j.issn.1671-2579.2025.04.020
Available at: https://zwgl1980.csust.edu.cn/journal/vol45/iss4/20

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