高張力鋼梁の塑性設計に関する研究 : 塑性設計梁に関する実験的研究 (5)

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As large-sized steel structures have been developed, high strength steels having high yield stress level have attracted special interest recently. In this situation, it is becoming to be common to apply high strength steel on the plastic design. There are, however, very few reports about high strength steel concerning with plastic design, and not enough of the necessary basic datas. The objectives of this experimental study is to explain the plastic behavior of high strength steel beams, and todetermine quantitatively the relationships between the rotation capacity and the mechanical properties of steels. The steels used in this experiments are SM-41, SM-50, HT-60, HT-80. Table-1 shows the outline of experiments. Experimental results of this study are showed in Table-2〜4 and Fig. 2〜16. From this experiment, high strength steel is seemed to be disadvantageous applying on the plastic design of steel structures. Especially, it is worth noting that HT-80 used in this experiments have few deformation capacity. While, the rotation capacity is directly influenced by the values of yield stress, strain hardening rigidity and plastic flow. Accordingly we concluded that effective factors can be represented only by the ratio of yield stress in the following manner. The rotation capacity is proportional to the square of the reciprocal ratio of yield stress in the case of equal end moment, and to the reciprocal ratio of that in the case of moment gradient.
社団法人日本建築学会の論文
1974-05-30

高張力鋼梁の塑性設計に関する研究 : 塑性設計梁に関する実験的研究 (5)

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