A型隅撐鋼構架耐震性能研究

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Title:	A型隅撐鋼構架耐震性能研究
Authors:	陳聖文;Chen, Sen-Wen
Contributors:	土木工程學系
Keywords:	隅撐構架;A型隅撐;耐震性能;曲線消能器;Knee braced frames;A-knee brace;Seismic design;Curved damper
Date:	2019-11-04
Issue Date:	2020-01-07 14:21:10 (UTC+8)
Publisher:	國立中央大學
Abstract:	本研究針對具有曲線消能器之 A 型隅撐構架耐震性能進行探討，研究中針對不同尺寸曲線消能器以及應用此消能器之隅撐構架分別進行試驗以確認其應用性。另外由曲線消能器之構件試驗結果得知曲線消能器在小位移比 0.38%至 0.56%之間，即進入塑性階段，由此開始消散能量，且在位移比 7%之內皆不會發生破裂，顯示曲線消能器具有極佳韌性。且另外由 A 型隅撐構架試驗結果得知，A 型隅撐構架具有適當之位移放大機制，可有效利用曲線消能器消散能量，此外隅撐系統亦可降低梁柱接頭之受力，延後梁端降伏之狀況。而構架初始勁度較抗彎構架高約於 3.77 倍，且消能能力提升為 1.42 至 2.00 倍。由上述結果可知，A 型隅撐構架可有效提升構架之承載性能。關鍵字:隅撐構架、A 型隅撐、耐震性能、曲線消能器;This study focused on the performance evaluation of A-knee braced frame. The purpose of this research is to confirm the applicability of A knee brace to the framed structural design According to the experimental results, curved damper started to dissipate energy in early deformation stage and had exhibited ductility to 7% deformation ratio without crack. Experimental results of A-knee braced frame tests show that deformation ratio of curved damper could be amplified in the proposed A-knee brace design. Therefore, significant contribution of energy dissipation from curved damper was validated. Further comparisons showed that the initial effective stiffness of A-knee braced frame was 3.77 times of that of the moment resisting frame. The energy dissipation of the proposed A-knee braced frame was also increased by 1.42 to 2.00 times. The significant performance improvements validated the applicability of A-knee braced frame design. Keywords: Knee braced frames, A-knee brace, Seismic design, Curved
Appears in Collections:	[Graduate Institute of Civil Engineering] Electronic Thesis & Dissertation

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