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目前,空心楼板的截面形式主要有工字形和凸字形两种。经对几项工程的调查统计表明,采用工字形截面空心板做楼板和屋面板,其板缝开裂的数量明显少于采用凸字形截面空心板板缝开裂的数量。一、空心板板缝开裂的形式及原因空心板板缝处楼(地)面开裂的形式主要有两种:一是板缝混凝土抗拉强度破坏;一是
At present, the hollow floor section of the main forms of I-shaped and convex two. After several projects survey statistics show that the use of I-shaped cross-section hollow slab floor and roof slab, the number of cracks in the slab significantly less than the use of convex-shaped hollow slab cracks the number of cracks. First, the form of hollow slab cracks and the reasons for hollow slab Office floor (ground) surface cracking in the form of two main: First, slab tensile strength of concrete damage; First