现浇混凝土楼板板角斜裂缝成因综合分析

Comprehensive analysis of contributing factors on the inclin ed crack of cast-in-place concrete slab

针对目前现浇楼板角部多出现斜裂缝的现象,采用解析分析计算收缩应变和温度应变,以及在板角1/8跨范围的最大主拉应力,并通过有限元程序ANSYS分析此处荷载应力,综合考虑三者的共同作用,探讨了板角斜裂缝的产生机理以及三者之间的关系,为工程实践提供理论依据。

According to the phenomenon that the inclined cr ack of cast-in-place concrete slab, the paper applies the number analysis and ANSYS to calculate 1/8 places of biggest and main tensile stresses in the case o f the shrink stress and temperature stress and lading stress, then synthesize th e consideration of common action, and inquiry the creation factor of the incline d crack. We propose the mending measure on the basis of it.