纤维增强复合材料及其结构研究进展

Due to the properties of light weight, high strength, flexibility of design and high durability, fiber-reinforced polymer (FRP) composites have become valuable materials in the field of infrastructure. Through structural innovation, fiber-reinforced composites can partly replace steel and concrete in producing structural components in order to satisfy the strength, stiffness and functional requirements of buildings, bridges and marine engineering structures. Scholars have conducted a lot of research and practice. Based on the relevant results, the research progress of fiber-reinforced composite structures is systematically summarized from four aspects: 1) in terms of constitute materials and manufacturing processes, the types and performance of reinforcing fiber, resin matrix and core material are introduced, and several typical manufacturing processes are described; 2) basic components and structural applications, including the composite tendons, profiles, tubes, plates and sandwich structures, and their machanical characteristics and main applications in civil engineering are introduced; 3) in terms of structural mechanics theory of composite materials, basic mechanical properties as well as impact, fatigue, creep properties and fire resistance are introduced in detail, and monitoring and design methods are also described; 4) in terms of durability of composite materials, the effects of temperature, humidity, ultraviolet radiation, erosion of chemical media (acids, alkalis, salts, etc. ), and the coupling of multi-factors on their durability are summarized, and the research status of durability improvement technologies is summarized. A systematic review of development status, limitations of application and prospects of the composite material structures in the infrastructure field is presented and the results can promote the research and engineering application of composite material structures.