针对裂缝房屋的处理实践针对裂缝房屋的处理实践.doc

针对裂缝房屋的处理实践 当前常见存在的房屋裂缝问题，已引起有关单位及各级领导的高度重视。但也发现，有些单位的施工、竣工资料不齐全，对产生裂缝原因的分析以及对裂缝房屋的处理带来困难。总之，裂缝产生的原因是比较复杂的，要想准确地判断裂缝产生的原因，还需要做大量而细致的调查取证工作；所采取的技术措施，还有待于在今后的工程实践中进一步改进和完善。 Cracks existing in the current common problems, has caused the relevant units and the great attention of leaders at all levels. But also found that some units of construction, completion data is not complete, on the analysis of the crack causes and treatment of cracks in the housing difficult. In short, the causes of cracks is more complex, in order to accurately determine the cause of the cracks, and also need to do a lot work and detailed investigation; Has yet to be taken by the technical measures in the future engineering practice to further improve and perfect. 2　裂缝产生原因与防治措施 2 cracks causes and prevention measures 2.1 设计中的重点加强部位 2.1 we will focus on developing part of the design 　　从住宅工程现浇楼板裂缝发生的部位分析,最常见、最普遍和数量最多的是房屋四周阳角处(含平面形状突变的凹口房屋阳角处)的房间在离开阳角1米左右,即在楼板的分离式配筋的负弯矩筋以及角部放射筋未端或外侧发生45度左右的楼地面斜角裂缝,此通病在现浇楼板的任何一种类型的建筑中都普遍存在. From residential engineering cast-in-place floor slab cracks occurred in the site analysis, the most common, the most common and is the largest number of Yang Angle around the house (including the plane shape of mutations in notch house Yang Angle) room in the left Angle of about 1 meter, namely in the floor of the separate reinforcement of negative moment reinforcement and radiation reinforcement end or the lateral Angle of around 45 degrees floors, oblique crack, the common fault in any one type of cast-in-place floor slab are common buildings. 　　其原因主要是砼的收缩特性和温差双重作用所引起的,并且越靠近屋面处的楼层裂缝往往越大. Its reason mainly is the shrinkage properties of concrete and the temperature difference caused by the dual role, and that the more the floor cracks are often near the roof is larger. 　　从设计角度看,现行设计规范侧重于按强度考虑,未充分按温差和混凝土收缩特性等多种因素作综合考虑,配筋量因而达不到要求.而房屋的四周阳角由于受到纵、横二个方向剪力墙或刚度相对较大的楼面梁约束,限制了楼面板砼的自由变形,因此在温差和砼收缩变化时,板面在配筋薄弱处(即在分离式配筋的负弯矩筋和放射筋的未端结束处)首先开裂,产生45度左右的斜角裂缝.虽然楼地面