预应力空心板楼面顺板缝裂缝是一种质量通病。其产生的原因很多,但我认为最主要的是板与板之间未设置构造配筋,只用素混凝土嵌缝,未能有效地将各板连成整体。因此,建议预应力混凝上空心板生产时作一些改进,具体作法是在板底增设横向构造钢筋及预埋铁件,如图1所示。 Prestressed hollow slab floor cracks along the cracks is a common quality problems. There are many reasons for it, but in my opinion, the most important thing is that there is no structural reinforcement between plates and plates, and only plain concrete caulking fails to effectively integrate the plates. Therefore, it is suggested that some improvements should be made in the production of prestressed concrete hollow slab, as shown in Figure 1, by adding transverse reinforcing bars and embedded iron pieces on the bottom of the slab.