浅谈无梁楼盖结构设计中注意的问题

Problems in structural design of flat slab structure

介绍了无梁楼盖结构设计中需要注意的4个问题:传力概念、板带划分、支座配筋计算点位置、柱帽上附加钢筋截断处位置。简要说明了荷载沿计算方向全部传递,建议板带划分对均匀跨度的按柱帽宽度划分,对柱帽较小或板带不正交的情况,按修正方式划分,指出支座配筋计算点位置取刚域边,给出了柱帽上附加钢筋截断处位置的实用计算公式,通过实例说明了如何精准进行无梁楼盖的设计和正确手算复核,以供设计参考。

This paper introduces four problems needing attention in the design of flat slab structure:The concept of force transmission,the division of plate and strip,the position of calculation point of support reinforcement and the position of cut-off of additional reinforcement on column cap,and suggests that the uniform span should be divided according to the width of the column cap,the case of the column cap being small or the strip not orthogonal should be divided according to the correction way,it is pointed out that the position of the calculation point of the support reinforcement is the edge of the rigid region,and the practical calculation formula of the position of the cut-off place of the additional reinforcement on the column cap is given,examples are given to illustrate how to precisely carry out the design of flat slab structure and how to check the calculation by hand for design reference.