保有水平耐力計算法に基づく耐震構造として設計された一層支持架構付きラチスドームの屋根部材2次設計用の構造特性係数評価

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  • SEISMIC FORCE REDUCTION FACTOR EVALUATION OF DOUBLE-LAYERED DOMES SUPPORTED BY SINGLE STORY SUBSTRUCTURES

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<p>This paper performed a series of nonlinear response history analyses (NLRHAs) for double-layered domes supported by single-story substructures to investigate the effect of the roof span L of 60m to 150m, yielding story drift ratio θy, yielding base shear coefficient Cy of 0.3 to 0.6, post-yielding stiffness ratio p of 0.01 to 0.5 on the seismic force reduction factor Ds and ductility ratio μ. Furthermore, a simple force reduction factor evaluation method considering the resonance between the dome and substructure was proposed. Finally, static analyses with an equivalent seismic load with the proposed Ds were compared to the NLRHAs.</p>

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