【摘要】 讨论了建筑钢结构在强烈地震作用下发生的断裂现象．根据近年来若干次破坏性地震后，各国研究者所取得的研究成果，综述了造成钢结构断裂的主要因素;从结构抗震的工程实践出发，提出了由损伤容许设计向损伤控制设计转变的概念．更多还原

【Abstract】 The crack phenomena of steel building structures under severe ealthquake action are discusals in this pa- pe. Based on the research progress in recent years after several damaged earthquakes,the main causes of steel smicture cracks are stated. A new concept that the damage allow design transfers to damage control design is brought forwald for resistant earthquake strUctures.更多还原