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一、前言建造大型焊接钢结构时,往往是从防止发生失稳破坏的角度要求进行选材。作为选材的一种考虑方法,是以“在最低使用温度下应满足设计条件要求的断裂韧性值(K.值)”为条件来评价材料的方法。采用这种选材方法时,为了满足设计条件所要求的K.值,在实际选材中多数是把在最低使用温度下的V型缺口却贝冲击吸收能应该是多少作为实际选材标准。因此,K.值与vE值的相互关系是一个重要的研究课题。
First, the preface Construction of large welded steel structure, often from the perspective of preventing destabilization damage required selection. As a material selection method, it is based on the “minimum operating temperature should meet the design conditions required fracture toughness value (K. Value)” to evaluate the material under the conditions of the method. In this selection method, in order to meet the design requirements of the K. value, the majority of the actual selection is the minimum temperature at the lowest V-notch Charpy impact absorption should be as the actual selection criteria. Therefore, the relationship between the K value and the vE value is an important research topic.