骨組構造物の終局限界状態設計における最小ノルム応力解析の応用

概要

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The first author proposed in the past a technique of minimum-norm stress analysis to choose a design stress field in equilibrium with ultimate design loads. This paper reformulates the technique based on the sum of weighted square stress that represents designer's dissatisfaction to a stress field chosen. As for a beam-column member, weights for squares of bending moment anj axial force are proposed on the basis of an elliptic approximation of yield surface. Also, another interpretation is presented that the technique is equivalent to perform a linear-elastic stress analysis on a rigid-body spring model of a frame. Then a designer can draw any desirable situation about the resistance and the deformation rate of plastic portion, and its secant flexibility can be used as tentative dissatisfaction weight at each portion. This technique has a potential to accept an arbitrary designer's strategy in the ultimate limit state design of frames.
社団法人日本建築学会の論文
2000-11-30