近斷層地震(Near-Fault Ground Motions)比起遠域地震(Far-Field Ground Motions)對長週期結構更加具有破壞力，其原因在於近斷層地震具有巨大且長時程的速度脈衝，以及明顯又快速的位移變化。1995年Hall等人的研究指出柔性結構受到近斷層地震的顯著地表位移脈衝作用下會產生嚴重的破壞。
為了探討受近斷層地震影響下之高樓層建築結構的行為，本研究設計並建立一棟具三十五樓之高樓層結構模型，為一傳統同心斜撐系統結合特殊抗彎矩構架系統結合之二元系統鋼結構。研究考慮之地震力方向上，結構由四組平行構架所組成，包含兩組特殊抗彎矩構架以及兩組二元系統構架。而結構根據現今設計規範之檢核、結構各種元件的模擬以及構件的塑性行為模擬與設定…等進行設計與建立，欲使模型在非線性動力歷時分析下呈現最接近實際的結構反應。
由研究結果得知，高樓層結構受近斷層地震作用下的破壞模式與遠域地震有所不同。更重要的是，沿結構高度分佈的側向力照理應根據結構動力學理論與模態形狀成比例，然而實際上卻發現其側向力分布以及結構破壞模式完全無法由模態進行預測，結構可能出現一種特殊變形反應，本研究稱之為甩鞭狀反應。出現甩鞭狀反應的結構於中低樓層會產生集中且嚴重的剪力破壞，並造成結構極大的永久變形。
本研究認為近斷層地震作用下結構的甩鞭狀反應值得進一步研究，因為當前的耐震設計規範仍無法預測。

Near-fault ground motions usually has large and long-duration velocity pulses and displacement pulses. These properties may cause severe damage to long-period structures. In 1995, Hall et al. discovered that flexural structures are very vulnerable to near-fault ground motions, in particular to those with significant ground displacement pulses. For the purpose of investigating the behavior of high-rise building structure subject to the near-fault ground motions while the availability of recorded near fault ground motions with large earthquake magnitudes is higher after 1999 Taiwan Chi-Chi earthquake, a 35-story building is designed according to Taiwan Seismic Design Code for Buildings. The building is composed of four parallel frames including two dual systems and two special moment resisting frames in the direction of consideration. The dual system is a concentrically braced frame with chevron braces. The study has found that the damaging pattern of the building is different when subject to near-fault ground motions and far-field ground motions. More significantly, the damaging feature is different that the dynamic characteristics of the building. The lateral force distribution along the building height, which should be proportional to the mode shape according to structural dynamics theory, is irrelevant to the damage pattern of the building. The whip-like behavior of the building under near-fault ground motion excitation deserves for more future study because it is not predictable by the current seismic design code.

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