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在砖混结构房屋中,有时会发现顶层纵、横墙端部出现八字形裂缝,甚至屋面板与墙交接处出现水平裂缝。这些裂缝虽不危及房屋的结构安全,但却给用户造成一定的心理压力,久而久之,也会对结构寿命产生影响。以下想就裂缝成因、预防及处理谈一些看法。 一、裂缝成因 在相同的温度条件下,钢筋砼的线膨胀系数是砖砌体线膨胀系数的两倍多,这就使屋面变形比砖墙大很多。这种变形的差异
In the brick-concrete structure houses, it sometimes happens that the vertical and horizontal walls of the top floor have cracks in the shape of a figure eight, and even horizontal cracks occur at the junction between the roof and the wall. Although these cracks do not jeopardize the structural safety of the house, they do impose some psychological pressure on the user. Over time, they will also affect the life of the structure. The following would like to talk about the causes of cracks, prevention and treatment of some views. First, the cause of cracks In the same temperature conditions, the linear expansion coefficient of reinforced concrete is more than double the expansion coefficient of the brick masonry, which makes the roof deformation much larger than the brick wall. This difference in deformation