现浇混凝土楼板裂缝产生原因及预防技术研究

现浇混凝土楼板裂缝产生原因及预防技术研究摘要随着我国经济的发展，人民生活水平的提高，人们对住宅建设的质量要求也在不断提高。前几年的住宅建设中的钢筋混凝土预制板构件，由于其本身在构造上存在着一些缺陷，即整体性及抗震性较差，不能满足现阶段安全性要求，因此在近几年的住宅建设中逐渐被钢筋混凝土现浇板所替代，但是，随着钢筋混凝土现浇板在房屋建设工程中的推广和应用，混凝土现浇板的裂缝问题也越来越成为人们关注的焦点。在施工中应尽量采取有效预防措施控制裂缝产生，使结构尽可能不出现裂缝或尽量减少裂缝的数量和宽度，尤其要尽量避免有害裂缝的出现，从而确保工程质量。本文对混凝土程中常见的一些楼板裂缝问题进行了认真研究、探讨分析，并针对具体情况提出了一些预防措施。关键词：现浇混凝土：裂缝：坍落度ABSTRACTWith the development of China's economy and the improvement of people'sliving standards,people's requirements for the quality of housing construction are alsoconstantly improving.In recent years,reinforced concrete precast slab members inresidential construction have been gradually replaced by reinforced concretecast-in-place slabs because of some structural defects,that is,poor integrity andseismic resistance,which can't meet the current safety requirements.However,withthe popularization and application of reinforced concrete cast-in-place slabs inhousing construction projects,the crack problem of concrete cast-in-place slabs hasincreasingly become the focus of attention.In the construction,effective preventivemeasures should be taken as far as possible to control the occurrence of cracks,so asto avoid the occurrence of cracks in the structure or minimize the number and widthof cracks,especially to avoid the occurrence of harmful cracks,so as to ensure theengineering quality.In this paper,some common floor cracks in concrete constructionare carefully studied,discussed and analyzed,and some preventive measures are putforward according to specific conditions.Keywords:cast-in-place concrete;crack,slump:residence目录第一章绪论......·11.1研究背景及意义.....11.2现浇混凝土楼板裂缝的现状....·.2第二章现浇钢筋混凝土楼板裂缝产生原因分析.·32.1材料方面.............32.1.1混凝土收缩变形32.1.2混凝土温度裂缝..........32.2设计方面.......···.32.2.1不均匀沉降.……42.2.2应力集中........42.2.3预埋管线...·42.3施工方面.，·············...........4第三章现浇钢筋混凝土楼板裂缝预防措施..···.···63.1选择和改进材料·············63.2裂缝产生的设计原因与防治措施....63.3裂缝产生的施工原因与防治措施.......·73.4监督与监理对裂缝产生防治措施.·..··8第四章现浇钢筋混凝土楼板裂缝常用的处理方法94.1表面修补方法........94.2对楼板结构进行加固.....9第五章结论...···10参考文献....11致谢.···12