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钢筋混凝土构件的变形,包括短期与长期变形两种。近年来由于装配构件的采用,以及高强轻质材料的应用,要求更精确地计算钢筋混凝土构件的变形。特别桥梁结构承受较强的动载,在跨度上更显示变形计算的重要性。与变形计算密切相关的裂缝理论、钢筋与混凝土粘结理论,混凝土的收缩徐变均影响长期变形的发展。这里分两篇分别对短期变形与长期变形做一综合介绍。
Deformation of reinforced concrete components, including both short-term and long-term deformation. In recent years, due to the use of assembly components, as well as the application of high-strength lightweight materials, require more accurate calculation of the deformation of reinforced concrete components. Special bridge structure to withstand strong dynamic load, the span shows the importance of deformation calculation. The fracture theory, the theory of bond between steel bar and concrete, and the shrinkage and creep of concrete which are all closely related to deformation calculation all affect the development of long-term deformation. Here are two articles on short-term deformation and long-term deformation to make a comprehensive introduction.