配置M型曲線消能器之倒V型斜撐鋼構架耐震性能研究

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Title:	配置M型曲線消能器之倒V型斜撐鋼構架耐震性能研究
Authors:	陳俊夆;Chen, Chun-Feng
Contributors:	土木工程學系
Keywords:	M型曲線消能器;全斷面降伏設計;抗彎構架;Multi-curve damper;steel curve damper;moment resisting frame
Date:	2021-08-16
Issue Date:	2021-12-07 15:05:37 (UTC+8)
Publisher:	國立中央大學
Abstract:	本研究改良前人設計之曲線消能器在壓力側表現之不足處，使用拉、壓行為平衡之M型曲線消能器，配置倒V型斜撐於傳統抗彎構架中，將可以提高抗彎構架之強度，並提供構架良好之消能行為。另本研究之M型曲線消能器採用全斷面應力降伏之斷面設計，可使消能器有均勻應力分布之特色，亦可以有效使用材料。為驗證此設計之可行性，本研究針對不同有效長度、偏心距、深厚比之M型曲線消能器進行構件測試，觀察消能構件之遲滯行為，並將M型曲線消能器配置於抗彎構架進行週期性位移負載試驗。實驗結果得知，消能器在受拉與受壓之表現一致，另M型曲線消能器在全斷面應力降伏之設計下並無應力集中之現象發生。構架試驗之結果可以得知以本研究之M型曲線消能器搭配倒V型斜撐之配置，可以提供結構良好之消能機制，同時提升主結構之消能容量3倍以上。由上述之研究結果得知，此設計可有效提升結構之耐震性能，對於工程發展有其可行性。 ;This study focused on the performance evaluation of Multi-curve damper with chevron braced frame. Multi-curve damper is a new inventive steel damper that designed to improve the performance of SCD (steel curve damper). SCD is a steel damper which can provide good strength increment and efficiently energy dissipation in structure. However, the rapid reduction of strength of SCD happened in early state of compression side due to the buckling problem. Multi-curve damper is a damper designed to have two side working in tension and compression simultaneously with one particular d irectional earthquake force. To identify the performance of Multi-curve damper, a series of experimental tests were conducted in this research with cyclic loading and variable parameter of Multi-curve damper. According to the experimental results, with the application of chevron brace with Multi-curve damper, Moment Resisting Frame can increase over 2 times of stiffness. Besides, with Multi-curve damper and chevron brace applied in the MRF the maximum strength of structure will be 1.5 to 1.9 times of MRF, and Multi-curve damper provide an effectively energy dissipation increment of above 3 times. In conclusion, Multi-curve damper is an available and effective device which can be adopted in structural design.
Appears in Collections:	[Graduate Institute of Civil Engineering] Electronic Thesis & Dissertation

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