本文对广东地区空心大板住宅外墙板的裂缝问题,从混凝土干缩与自然温差两方面考虑,先计算出无配筋墙板与配筋墙板的混凝土干缩量,折算成当量温差和自然温差进行叠加,再算出墙板温度应力值与混凝土抗拉强度作比较,从几种可能发生的温差情况中,定量地分析外墙板裂缝产生的原因,并提出了设计改进措施。 In this paper, considering the cracks in the exterior wall slabs of hollow slab houses in Guangdong, from the aspects of concrete shrinkage and natural temperature difference, the concrete shrinkage of unreinforced wallboards and reinforced wallboards is first calculated and converted into equivalent temperature difference. The natural temperature difference is superimposed, and then the temperature stress value of the wall plate is compared with the tensile strength of the concrete. From the possible temperature differences, the causes of the cracks in the outer wall plate are quantitatively analyzed, and the design improvement measures are proposed.