预制楼板的地面和天棚顺板缝开裂的现象经常发生。针对板缝开裂这一质量通病,我们采取了六条预防措施,效果较为显著,现介绍如下: 一、改进楼板的构造形式 现在使用的楼板的侧边仍然多为直坡形,构造不合理。把楼板侧边改为键槽形式,这样不但增加了与嵌缝混凝土的粘结面积,而且这种构造形式能有效的提高嵌缝的质量和保证传力效果。 二、尽可能的使用大规格楼板 Cracks in the floor and ceiling of prefabricated floor slabs often occur. For the common problem of cracking the board seams, we have taken six precautionary measures. The results are as follows: 1. Improvement of the structural form of the floor The side of the floor currently used is still mostly straight-sloped and the structure is unreasonable. The side of the floor is changed to the form of a keyway, which not only increases the bonding area with the caulking concrete, but also can effectively improve the quality of the caulking and ensure the force transmission effect. Second, use large-size floor slabs as much as possible