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南京国投大厦有３ 根跨度３２ｍ 、梁高３．７～４．２ｍ 的开洞预应力混凝土转换大梁，采用叠合梁两次浇筑成型法施工，本文介绍该转换大梁的支模、钢筋绑扎、混凝土浇筑及预应力施工等。
There are three prestressed concrete conversion girders with a span of 32m and a beam height of 3.7-4.2m in Nanjing Guotou Building. The construction of the composite girder is performed by two pouring methods. This article describes the formwork and reinforcement of the conversion girder. , concrete pouring and prestressed construction.