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目前砖混结构的房屋,普遍存在楼板缝开裂的现象,直接影响住宅工程的使用功能。本文提出几点建议,供设计和施工人员参考。1.板缝的设计问题(1)楼板缝实际就是混凝土的施工缝,灌板缝用的混凝土强度,应该与楼板混凝土的强度相同。(2)楼板截面的形状不宜采用图1所示的形状,应采用图2所示的形状。因为这种形状的楼板截面,在楼板局部受力时,板与板之间能相互作用,对防止板缝开裂有一定的效果。
At present, the brick-concrete structure houses generally suffer from cracks in the floor joints, which directly affects the function of the residential project. This article proposes several suggestions for design and construction personnel. 1. Design problems of slab seams (1) Floor slab seams are actually concrete construction seams, and the concrete strength of the slabs should be the same as the strength of the slab concrete. (2) The shape of the cross-section of the floor slab should not adopt the shape shown in Figure 1. The shape shown in Figure 2 should be used. Because of the cross-section of the floor in this shape, when the floor is partially subjected to forces, the plates can interact with each other, which has a certain effect on the prevention of cracking of the joints.