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Abstract
Despite the extensive studies on the effect of width-thickness ratio and residual stress on member behavior, few scholars have probed into the residual stress distribution on the I-section members. Based on the principle of blind hole drilling, this paper conducts an experimental study of the residual welding stresses of eight welded I-shaped members. Through the analysis of the test results, the author draws the following conclusion: it is safe to use I-section members beyond the limits of width-thickness ratio because the residual stress distribution is not severely affected by width-thickness ratio.
Highlights
I n many large steel structures, the flexural members are often I-shaped members with excessively high width-thickness ratio
It is necessary to study the relationship between residual stress distribution and width-thickness ratio of such members
Many Chinese scholars have probed into the effect of width-thickness ratio and residual stress on member behavior
Summary
I n many large steel structures, the flexural members are often I-shaped members with excessively high width-thickness ratio. Such members fall into the category of large welded components. The residual stress distribution and the size of I-shaped members vary significantly as a result of the effect of the residual stress on structural rigidity, stability, strength and stress corrosion cracking. In the principle of blind hole drilling, this paper aims to measure residual stress, draw residual stress distribution maps, and analyze the influencing factors of welding residual stress, thereby providing a basis for the design of similar components
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