Exploring the Current Research Status of High-Performance Materials in the Strengthening of Existing Bridges

Abstract

The bridge industry in China began in the 1950s and rapidly developed in the 1980s, with a large number of reinforced concrete bridges being built and put into use. However, with the rapid growth of the national economy and the vigorous development of transportation, the total volume of transportation has surged in recent years, and the axle load of vehicles has continuously increased. This has led to many existing bridges being in a state of overload for a long time, resulting in aging or even damage, which seriously affects the smooth flow of traffic. Traditional bridge reinforcement methods, due to their poor durability, long construction periods, and impact on traffic, have gradually shown lag and inadaptability. This paper focuses on the application of high-performance materials in bridge reinforcement, mainly exploring the technical characteristics, design schemes, and reinforcement effects of ultra-high toughness resin concrete, ultra-high performance concrete, and carbon fiber materials. Research indicates that these materials can significantly enhance the load-bearing capacity, durability, and construction efficiency of bridges, providing a reliable solution for the long life and high performance of bridges. This study offers new insights into the field of bridge reinforcement and is of great significance for the sustainable development of transportation infrastructure.