筋かい付鉄骨造発電所建家の耐震設計法に関する実証的研究 : その1 K型筋かい付単位骨組の弾塑性履歴特性の実験的検討

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The purpose of this study is to establish a rational aseismic design method, through the experimental and analytical research, applicable to the large turbine building of a thermal. power plant, which accomo-dates many important equipment like steam turbines, generators and incorporates aseismic elements composed of K-type braced frame. Experimental cyclic tests of K-type braced frame which were fabricated based on the same designs criteria as used in existing turbine building was conducted to investigate the inelastic hysteresis characteristics' including post buckling behavior. Three 1/2 scale K-type braced frame test specimens were applied, varying the slenderness ratio and end connection of the brace members. Test results of K-type braced frame used in existing turbine building are summarized as follows. (1) The general behavior of a K-type brace frame under cyclic loading is extremely complicated and difficult for seismic analysis. (2) Maximum strength after buckling is largely influenced by the condition of the braced end connection. The increments of the brace cross sectional area does not largely concern with maximum strength after buckling because of vertical displacement of the upper beam. (3) Despite reduction of 10-20% in strength after buckling, load carrying capacity remains at a very high level under stable conditions until 1/50 of story drift angle R. (4) Downward displacement at center point of the upper beam accumulates gradually accompanying increments of the story. drift angle R. (5) Ductility factor of K-type steel braced frame investigated herein is approximately 5, judging from aforementioned test results.
社団法人日本建築学会の論文
1985-10-30

筋かい付鉄骨造発電所建家の耐震設計法に関する実証的研究 : その1 K型筋かい付単位骨組の弾塑性履歴特性の実験的検討

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