一、深梁受力后的应力状态及斜裂缝机理斜裂缝的出现和扩展对深梁的工作特性有很大影响,它将引起深梁应力的内力重分布。和一般梁一样,斜裂缝一出现,发展就比垂直裂缝快,所以除用水平和垂直配筋限制斜裂缝的宽度外,为了保证耐久性长,必须建立相应的斜裂缝宽度的计算公式,因为 First, the stress state after the deep beam and oblique crack mechanism The occurrence and expansion of oblique cracks have a great influence on the working characteristics of deep beams, which will cause the redistribution of deep beam stress internal forces. Like ordinary beams, oblique cracks appear faster than vertical cracks. Therefore, in addition to limiting the width of diagonal cracks with horizontal and vertical reinforcements, in order to ensure long durability, the formula for calculating the width of oblique cracks must be established because