FRP Material for the Performance of Bridge Components Reinforcement and Improvement

Abstract

Most bridges today suffer from ageing as a result of increased uses and the erosion of the natural environment. Engineers often need to focus on the actual strengthening needs in the projects they design, as each method has its own limitations and applicability, and there are gaps in the strengthening and improvement methods for various bridge elements. This paper provides a synthesis of some methods of strengthening bridge elements to facilitate comparison and discussion during construction. The application of Fiber Reinforced Polymer (FRP) materials in bridge engineering is then explored and the different types of FRP materials are compared. The results show that the strengthening methods are more suitable for each bridge member. For bridge decks, the analysis of various FRP reinforcement test results and crack extensions lead to the conclusion that the FRP reinforcement is closer to the modulus of elasticity of concrete and has better coordination of deformation, making it a splitting of concrete. However, when discussing the strengthening of bridge girders and pier members, the type of damage that occurs under different damage and loads is different. Therefore, there are different options and methods for different types of FRP materials.