现浇钢筋混凝土楼板出现裂缝的原因及防治措施..doc

摘 要 Abstract Since 2001,Suzhou City, plate system from prefabricate commodities to concrete cast-in-place plate system, cast-in-place reinforced concrete slab in the structural safety and the use of functions is much more superior than block, but the floor in the structural safety and the use of function than superior to prefabricated panels , but the growing cracks in the floor . Cracks on the floor most consumers lack the necessary knowledge that the cracks are harmful , worried that the floor will cause cracks in the building collapse, reflecting the sensitive nature of complaints in recent years become a hot spot , developers and contractors to this growth in spending from year to year. Cracks in cast-in-place reinforced concrete floor construction is a long-term problems of a difficult enterprise, but also the quality of residential complaints frequently asked questions. Although the theory suggests that the cracks in reinforced concrete floor of the phenomenon is inevitable, these cracks generally considered of little use against, but in the actual construction is still a need to take effective measures to control, particularly to avoid cracks in the selection of harmful . Structural design in architecture and building construction, to take certain measures to avoid or reduce cracks in the selection of the probability of cracks is essential. Key words：Cast-in-place reinforced concreteslab cracks; the cause of concrete deformation; Prevention and control measures 目 录………………………………………………………1 1.1楼板裂缝所在部位及其特征……………………………………………1 1.2楼板裂缝种类……………………………………………………………1 1.3楼板裂缝形式 ……………………………………………………………2 1.4楼板裂缝影响因素分析 ……………………………………………… 2 2 楼板裂缝的成因分析 ……………………………………4 2.1设计方面的原因…………………………………………………………4 2.2施工方面的原因 … ………………………………………………………6 2.3 材料变形方面的原因 …………………………………………………6 3 楼板裂缝的防治措施……………………………………8 3.1 设计方面………………………………………………………………8 3.2 施工方面………………………………………………………………9 3.3 材料方面 ………………………………………………………………10 4 结语………………………………………………………13 致谢 ………………………………………………………… 14 参考文献 …