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随着建筑科学技术的发展,近20年来又推出了第五种结构类型,即全新的钢-混凝土组合结构。钢管混凝土组合结构之一的钢管混凝土(即钢管混凝土-CFST),就是在钢管中充填素混凝土制成的建筑构件。它具有承载力高、抗震性能好、节约钢材和施工简捷等突出优点,因而在高层和超高层建筑中得到了日益广泛的应用。其推广与发展的速度十分迅猛,并将成为二十一世纪高层和超高层建筑群最为实用和主要的结构形式。
With the development of building science and technology, the fifth type of structure has been introduced in the recent 20 years, namely the new steel-concrete composite structure. The concrete-filled steel tube (CFST), one of the concrete-filled CFST structures, is a building component made of steel filled with plain concrete. It has the advantages of high bearing capacity, good anti-seismic performance, saving steel and simple construction. It has been widely used in high-rise and super-tall buildings. Its speed of promotion and development is very rapid and will become the most practical and major structural form of high-rise and super-high-rise buildings in the 21st century.