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河南某烟厂综合站房为现浇框架结构,局部2层,底层层高6.0m,二层层高3.6m。框架梁跨度有6m和8m两种,梁高分别为650mm和700mm,均采用C25现场搅拌混凝土浇筑。工程投入使用4个月后,一层部分框架梁侧面出现不规则斜向裂缝和横向裂缝,对工程安全构成隐患。
Henan Tobacco Factory integrated site for the framework of cast-in-place, two floors, the underlying high 6.0m, two storey high 3.6m. Frame beam span of 6m and 8m two kinds of beam height were 650mm and 700mm, are used C25 on-site mixing concrete pouring. Four months after the project was put into operation, irregular oblique cracks and transverse cracks appeared on the side beams of some of the frame beams, which posed a hidden danger to the engineering safety.