多层砖混结构顶层尽端单元的墙体在基础未下沉的情况下常常出现裂缝。现将其裂缝的原因和治理方法介绍如下。一、墙体裂缝的原因1.温度影响屋面由于受太阳长时间的照射,与墙体获得的热量相差较大,且在相同温度情况下,混凝土的线膨胀系数比砖墙大1倍,屋盖变形比砖墙大得多,因此,墙体与屋盖的接触面 The walls of the top end unit of the multi-layer brick-concrete structure often have cracks when the foundation is not sinking. The causes and treatment methods of cracks are described below. First, the reasons for the wall cracks 1. Temperature affect the roof due to exposure to the sun for a long time, and the wall to obtain a large difference in heat, and at the same temperature, the coefficient of linear expansion of concrete is 1 times larger than the brick wall, housing The deformation of the lid is much larger than the brick wall, so the contact surface between the wall and the lid