在混凝土柱内配上钢筋成为钢筋混凝土柱,在混凝土柱外套上钢管即成为钢管混凝土柱。顾名思意,预应力钢管混凝土柱就是对钢管混凝土柱施加预应力,使截面更小,承载力更高。那么,如何对钢管混凝土柱施加预应力呢?黑龙江省建筑设计院新技术研究所是这样做的: Reinforced concrete columns were added to the concrete columns, and the steel tubes became concrete-filled steel tubular columns on the concrete column jackets. As the name suggests, prestressed concrete-filled steel tubular columns are prestressed on concrete-filled steel tube columns, which results in smaller cross-sections and higher bearing capacity. Then, how to apply prestress to concrete-filled steel tubular columns? The New Technology Research Institute of Heilongjiang Provincial Architecture Design Institute did the following: