随着我国的经济建设不断的发展,钢铁工业在社会结构的建设尤为重要。从小型到大型钢结构焊接焊接结构,大容量的钢结构焊接,在焊接结构如果有意外,所以造成的损失往往是灾难性的,必须高度重视。本文主要对钢材和焊接裂纹进行了分析,对裂纹的原因防止建筑钢结构焊接裂缝的具体措施和方法。 With the continuous development of China’s economic construction, the construction of the steel industry in the social structure is particularly important. From small-scale to large-scale welding of steel structures, welding of large-capacity steel structures, if there are accidents in the welded structure, the resulting losses are often disastrous and must be highly valued. This article mainly analyzes the steel and welding cracks, and the concrete measures and methods to prevent the welding cracks of the building steel structure from the cause of cracks.