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一、概述预应力混凝土圆孔板自六十年代起,一直广泛应用于城市民用建筑的楼面和屋面及部分工业建筑的楼面.近年来,农村住房建设有了很大发展,二、三层楼房建筑逐年增加,而作为农房建筑主要的楼面构件和一部分屋面构件。仍沿用城市预应力混凝土圆孔板(以下简称圆孔板).圆孔板根据建筑模数的要求,采用较多的截面宽度有390、490、590mm 三种,孔数有3、4、5、6孔等,孔径有66、76、86mm 等,截面高度原普遍采用110、120mm两种,随着农村建筑的发展,为了减轻自重,高度为80、90、100mm 的圆孔板也有不少生产厂开始生产,工业楼板还有取截面高度为180mm.《冷拔低碳钢丝预应力混凝土中小构件设计与施工规程
I. Overview Prestressed concrete circular orifices have been widely used in urban civil construction buildings and roofs as well as in some industrial buildings since the 1960s. In recent years, rural housing construction has developed greatly. II. III. The number of building buildings has increased year by year, and it has been used as the main floor structure and part of the roof structure of rural housing. Urban prestressed concrete circular orifice plates (hereinafter referred to as circular orifice plates) are still in use. Circular orifice plates have three types of cross-sectional widths of 390, 490, and 590 mm, and a number of holes of 3, 4, and 5 according to the requirements of the building modulus. , 6 holes, etc., aperture diameter of 66,76,86mm, etc., the cross-section height of the original commonly used two kinds of 110,120mm, with the development of rural construction, in order to reduce their own weight, the height of 80,90,100 mm round hole plate there are many The production plant has started production, and the industrial floor has a height of 180 mm. "Design and Construction of Cold-drawn Low-carbon Steel Prestressed Concrete Small and Medium-sized Components