砖混结构的多层建筑物的温度裂缝是一种常见的裂缝。其形成的原因比较复杂；材料的线膨胀系数不同，产生的温差应力也就不同，又与建筑物的长度、结构形状，施工质量的优劣、施工工期的长短、主体封顶的时间、屋面保温层的性能等因素有关。由于上述原因，我们对近几年竣工的工 Temperature cracks in brick-concrete multistory buildings are a common crack. The reason for its formation is more complicated; the linear expansion coefficient of the material is different, and the resulting temperature difference stress is also different. It is also related to the length of the building, the structure and shape, the quality of the construction quality, the length of the construction period, the time of the main body capping, and the roof insulation. Layer performance and other factors. For the above reasons, we have completed the work in recent years.