摘要
Abstract
As an important mechanical component in steel structure buildings,the action mechanism and performance characteristics of prestressed tendons need to be studied systematically.The test results of installation technology,joint performance and tension control of prestressed tendons reveal that when the prestressed value reaches 75%of the design value,the overall stiffness of the structure is increased by more than 40%,the vertical deflection is reduced by 25%～35%,and the 50-year retention rate of prestressed tendons is increased by more than 80%with double protection technology.The mechanical model of the interaction between prestressed tendons and steel structure is studied and established to form the design and construction standard of prestressed tendons,which lays a theoretical foundation for the standardized application of prestressed tendons in steel structure buildings.关键词
钢结构建筑/预应力筋/受力性能/变形性能/耐久性Key words
Steel structure building/Pre-stressed reinforcement/Mechanical performance/Deformation performance/Durability分类
建筑与水利
