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肋形楼盖的主梁、次梁、楼板的负筋如何排放,直接关系到梁板的有效高度,即承载能力问题。因此,如何合理排放,尽量减少其有效高度的损失,是设计和施工共同关注的问题。 负筋的位置可能有三种排放形式:①次梁负筋排放在楼板和主梁负筋的上面;②次梁负筋排放在楼板和主梁负筋的下面;③次梁负筋排放在楼板负筋的下面,主梁负筋的上面。笔者认为,①最不合理,②不太合理,③最合理。
How to discharge the negative reinforcement of the main beam, secondary beam and floor slab of the ribbed floor is directly related to the effective height of the beam slab, that is, the bearing capacity. Therefore, how to rationally discharge and minimize the loss of its effective height is a matter of common concern for design and construction. The negative tendons may have three forms of discharge: 1 negative beam is discharged on the floor and the top of the main beam; 2 negative beam is discharged on the floor and the bottom of the main beam; 3 negative beams are discharged on the floor. Below the negative rib, above the negative rib of the main beam. In my opinion, 1 is the most unreasonable, 2 is not reasonable, and 3 is the most reasonable.