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標題: 不規則建築結構層間損壞指標之應用
Application of a Story Damage Index for Irregular Buildings
作者: 吳坤鴻
Wu, Kung-Hong
關鍵字: 損壞指標;Damage Index;敏感度分析;系統識別;損壞評估;Sensitivity Analysis;System Identification;Damage Assessment
出版社: 土木工程學系所
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In this study, a sensitivity analysis was conducted for a story damage index (SDITC/ASDITC). Based on modal parameters, the story damage index was applied to evaluate the occurrence, location, and severity of torsionally-coupled (TC) buildings damage after earthquakes. During the calculation of this index, the change of center of rigidity can also be obtained, which effectively reveals the damage location in a particular story. The sensitivity analysis of the SDITC/ASDITC and eccentricity under errors of mode shapes was investigated by numerical simulation of an ASCE benchmark model with different damage types. In addition, a mode shape interpolation method was applied to obtain complete mode shapes for incomplete measurement buildings. Besides the verification through the numerical model, this damage index was also applied to the damage assessment of the Taitung Fire Department Building, which experienced severe structural damage during the Beinan earthquake at April 1, 2006. Based on the identified model parameters, the damage index was calculated to assess the damage of the building. Comparing with the visual inspections, it was evident that SDITC and ASDITC are useful to indicate the damage specifically. Finally, a preliminary study that applying the story damage index to non-shear-buildings was investigated. The results can be used as a reference for future study.

本文利用前人所推導之扭轉耦合建築結構層間損壞指標與偏心距計算公式,進行完整之敏感度分析。並利用不同破壞形式之ASCE數值模型,探討振態誤差對損壞指標與偏心距計算之影響。除此之外,並利用振態內插法,內插未量測樓層之振態,求得結構完整模態參數,並探討不足量測結構損壞評估之可行性。本文主要是探討損壞指標與偏心距之準確性,並以台東消防分隊大樓受2006年4月1日台東卑南地震損壞前後之實測地震紀錄,應用SRIM (System Realization Using Information Matrix)系統識別技巧與振態內插法還原結構物完整模態參數進行損壞評估,並與實際現場勘查結果比較,驗證其實用性。最後,本文以平面非剪力結構為例,初步探討層間損壞指標應用於非剪力結構之可行性,可作為後續研究之參考。
其他識別: U0005-2408201113543700
Appears in Collections:土木工程學系所

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