砼收缩开裂问题是一直未能很好解决的难题,并作为一个普遍性的薄弱环节困扰着建筑界.作者通过对深圳体育场看台超长结构的裂渗分析,提出了利用UEA膨胀砼对体育场看台进行裂渗控制,取消后浇带的有效理论依据,并成功地指导了该工程的施工. The problem of shrinkage cracking is a difficult problem that has not been solved well and has plagued the construction community as a universal weak link. The author proposes to use UEA to expand the ballast against the stadium stand through the cracking and seepage analysis of the ultra-long structure of Shenzhen Stadium stands. The cracking control was carried out to eliminate the effective theoretical basis of the post-pouring belt and successfully guided the construction of the project.