目前一些工程使用中发现预应力混凝土空心板存在质量隐患 ,包括跨中附近裂缝 ,端部裂缝 ,板底或板肋蜂窝、麻面及露筋 ,混凝土强度不足和受力主筋质量不合格等。上述问题影响结构安全时 ,就必须采取措施进行加固处理。加固处理的方法很多 ,如板面浇筑混凝土叠合层、板孔剔槽埋 At present, some pre-stressed concrete hollow slabs are found in some engineering applications, which may cause quality problems, including cracks in the mid-span, end cracks, slab or ribbed honeycomb, pockmarks and tendons, insufficient strength of concrete and unqualified main bar quality. When the above problems affect the structural safety, measures must be taken to reinforce the structure. Reinforcement of many ways, such as the surface of the concrete pouring plywood, slatted trenches buried