針對美國規範（ASCE/SEI 7-16）中重大修訂內容，包括隔震系統
上下界特性之定義、隔震系統最大總位移之計算方式、以及隔震結構
地震力豎向分配之方法，闡明規範設計概念與理論基礎，並與舊有規
範（如台灣現行規範）中相對應的隔震建築設計規範內容，進行理論
探討及案例分析，提供國內隔震建築設計規範修正參考。
針對具雙線性遲滯行為之隔震系統，本研究探討於不同需求之設
計參數合理性，以及實務應用之可行性。並提出一以性能指標為設計
參數之等效線性靜力分析設計流程，即組合十四(以三個性能指標作
為給定參數，即設計位移、設計加速度、與永久殘餘變形)，並考量實
務應用之可行性；此外，以國內近斷層地震效應下之阻尼比修正係數
之相關研究結果進行設計與動力分析，結果顯示本研究之設計流程可
以合理地應用考量近斷層效應之公式，且對於近斷層效應造成之隔震
位移有一定掌握程度；對於美國規範中考量隔震元件力學特性變異性
之方式，本研究亦針對我國耐震設計規範之內容以及特性，擬將變異
性考量方式推廣至設計階段，即考量隔震系統設計參數變異性之方法，
且根據前述對多種設計參數組合之探討結果決定考量變異性之設計
流程，並以案例分析驗證其保守性與可行性，供國內規範修訂與業界
參考。

Three major revisions relevant to seismic isolation design in Chapter
17 of ASCE/SEI 7-16, i.e. bounding analysis for seismic isolation systems,
calculation of total maximum displacement of seismic isolation systems,
and vertical distribution of lateral seismic force to seismically isolated
structures, are theoretically and numerically examined in this study. The
further comparisons of numerical results based these revisions and the
current design provision in Taiwan can provide important references for
future reasonable and necessary revisions.
During the equivalent lateral force procedure for designing a structure
isolated with a bilinear hysteretic isolation system, several previously
determined parameters, such as mechanical properties of seismic isolation
systems or design parameters and performance indices of seismically
isolated structures, are required. To better meet the principle of
performance-oriented design and after examining several practical
combinations, an analysis procedure with the three performance indices
decided in advance, i.e. acceleration transability, isolation displacement,
and post-earthquake residual displacement, is proposed in this study. With
considering damping modification factors varied with different equivalent
damping ratios as well as different ratios of effective periods of seismic
isolation systems to pulse periods of ground motions, response spectra of
pulse-like near-fault ground motions are employed to examine the practical
feasibility, accuracy, and conservatism of the proposed analysis procedure.
The numerical comparison results show that the approximations by the
proposed analysis procedure can present comparable maximum inelastic
displacement and acceleration responses of seismic isolation systems to the
nonlinear dynamic response history analysis results. Moreover, to consider
variations of design parameters of seismically isolated structures attributed to uncertainties of mechanical properties of seismic isolation systems,
bounding analysis for seismic isolation design is conducted. The analysis
results indicate that considering a specific variation for two design
parameters (the effective stiffness and equivalent damping ratio), which
might be easier and more intuitive for structural designers in practice, can
almost present more conservative bounding design results than considering
the same variation but for two mechanical properties (the characteristic
strength and post-yield stiffness).

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