本研究提出一新型能量消散裝置－波形消能器，將會於本研究中介紹其承載行為。此新型裝置採用漸變弧形鋼板，在有限的尺寸下，提供對稱耐震能力，同時最大限度地提高了阻尼強度和能量耗散效率。對不同幾何形狀之波形消能器以及分別配置和未配置波形消能器的構架進行了反覆載重試驗。分析波形消能器的降伏特性，其結果與試驗結果吻合良好。此外，利用非線性歷時分析，於多跨多層鋼結構中，輸入多個地震記錄進行分析，進一步了解配置有波形消能器之斜撐構架性能。波形消能器研究結果顯示，其能夠同時實現早降伏、顯著的強度與能量消散能力、對稱遲滯行為及有效的等效阻尼比。波形消能器的特性受阻尼器偏心距、深度和厚度的顯著影響。構架試驗結果表明，採用波形消能器後，框架強度與能量消散能力、黏滯阻尼比明顯提升。非線性歷時分析結果顯示，波形消能器斜撐構架相較特殊抗彎構架，更能顯著降低及衰減更快結構物之最大屋頂位移，與基底剪力合理增加下，減少最大層間變位角及殘餘變位角。這些性能提升驗證了所提出的裝置在抗震結構設計上的適用性。;In this study， a new energy dissipation device， namely wave damper， was introduced and investigated for seismic performance enhancement. The novel device was designed using a series of tapered steel plate arcs operating in a specialized load transmission mechanism to achieve symmetrical flexural response while simultaneously optimize damper strength and energy dissipation efficiency within limited dimension. Experimental investigations were conducted on the wave damper at the member and system levels， using a series of cyclic loading tests. Analytical expressions for wave damper yielding characteristics and tapered profile were derived and effectively validated by the test results. Structure performance enhancement was further investigated by nonlinear time-history analyses on multi-bay multi-story buildings using various earthquake ground motions. The experimental investigation on wave damper showed that early yielding， significant strength and effective energy dissipation density， symmetric hysteretic behavior with effective damping were simultaneously achieved in the proposed device. Dampers with larger depth and thickness， or smaller eccentricity would incur higher strength and energy dissipation. The frame test results showed that significant improvement in strength， energy dissipation and equivalent viscous damping were achieved when wave dampers were adopted， effectively controlling the structure deformations. The nonlinear time-history analysis results revealed that maximum roof displacement of braced structures was found to remain lower and decayed faster to achieve earlier stabilization， compared with those of SMFs. Braced frame maximum story drifts and residual drifts were substantially reduced from those of SMFs with reasonable increment in base shear. The achieved results justified the proposed device feasibility in seismic design and structural performance upgrading.
