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现浇构件,特别是面积较大、厚度较小的现浇楼盖,一时普及预应力尚有些困难。可采取冷轧扭与普通钢筋混合配筋的方法。一、适合范围1.板跨较大、荷载较大,只用加密钢筋和加大板厚方法有时不尽合理,采用混合配筋方法可以解决这一难题。例如在一些现浇楼盖连续单向板中,当板跨达到3.90m、4.20m时,冷轧扭钢筋φ~t8、φ~10已不能满足需用,需φ~12,可φ12盘条又较缺,于是采用3φ~10适当加入φ14钢筋,就可满足设计要求,在
Cast-in-place components, especially large area, small thickness of cast-in-place floor, temporary popularity of prestressing is still somewhat difficult. Can take the method of cold-rolled twisted with ordinary steel reinforcement. First, the scope of 1. A large span, load larger, only the use of steel and increase the thickness of the plate method is sometimes not reasonable, the use of mixed reinforcement method can solve this problem. For example, in some cast-in-place continuous one-way slabs, when the board span reaches 3.90m and 4.20m, the cold-rolled twisted bars φ ~ t8 and φ ~ 10 can not meet the need, But also lacking, so using 3φ ~ 10 appropriate to join φ14 steel, you can meet the design requirements, at