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经现场勘察，砖混结构住宅楼产生裂缝的主要原因是由于温度变化而产生的多余应力。分析知，在温度变化相同时，钢筋混凝土结构屋面板的热伸长量是砖砌体承重横墙的两倍。因此，为了避免产生裂缝，在结构设计时应减少横墙体对屋面板以及外纵墙和女儿墙对屋面板的约束，保证屋面板自由伸缩，增加保温层厚度，减小温差，提高墙体的抗拉强度，严格控制保温材料的含水率不得超过设计值。与此同时，还对已产生的裂缝提出了具体的修补措施。
After field investigation, the main cause of cracks in brick-concrete residential buildings is the excess stress due to temperature changes. The analysis shows that when the temperature changes are the same, the thermal elongation of the reinforced concrete structural roof is twice that of the brick bearing transverse wall. Therefore, in order to avoid cracks, structural design should reduce the constraints of the horizontal wall on the roof and the outer wall and the parapet against the roof to ensure that the roof panel free expansion and contraction, increase the thickness of the insulation layer, reduce the temperature difference, improve the wall The tensile strength, strictly control the moisture content of the insulation material must not exceed the design value. At the same time, specific repair measures have also been proposed for cracks that have already been produced.