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钢管混凝土作为一种新的复合建筑材料,已在高层建筑、地铁站台、工业厂房、大跨度桥梁、高架输电塔、住宅等结构中广泛应用,发展前景良好。在实际结构中,由于混凝土的收缩徐变而引起的结构变形、预应力损失、内力重分布、应力集中等问题日益突出,这将影响到结构的长期使用性能和设计寿命。本文主要阐述了钢管混凝土徐变特点、徐变基本理论、钢管混凝土徐变的影响因素等,希望可以吸引优秀学者对钢管混凝土徐变的相关问题进行深入研究。
As a new composite building material, CFST has been widely used in high-rise buildings, subway stations, industrial plants, long-span bridges, overhead transmission towers, residential buildings and other structures. In the actual structure, the problems of structural deformation, prestress loss, internal force redistribution and stress concentration caused by the shrinkage and creep of concrete become more and more prominent, which will affect the long-term serviceability and design life of the structure. This paper mainly expounds the characteristics of creep of CFST, the basic theory of creep, the influencing factors of creep of CFST, and hopes to attract the best scholars to study the related problems of CFST creep.