考慮台灣既有中高樓層建物特性之耐震初步評估方法研究

在0206美濃地震的建築物震害調查結果發現：因台灣都會區之迅速發展，使得中高樓層建築物急遽增加，然而中高樓層建築物常因其商業用途及使用機能所需，其結構特性常產生力傳遞路徑不良、贅餘度不足、底層軟弱、結構不規則效應過大及非韌性配筋等問題，以致易產生震損甚至倒塌造成大量人命傷亡。本研究擬針對臺灣常見的鋼筋混凝土造之既有中高樓層建築物，蒐集0206美濃地震中臺南市區中高樓層災損案例，配合進行台灣習見之既有建物耐震評估，以檢視現有的初評程序是否可有效篩選及檢視中高樓層建築物常見底層軟弱、平面與立面不規則效應、結構穩定性不足、結構贅餘度不足及力傳遞路徑不良等問題，然後提出力求簡易且易於推動執行的耐震初評估程序改進方案，期以可有效篩檢出目前台灣震害風險較高之既有中高樓層建物，以促進提高此類建築之抗震能力，以確保國內建築物之耐震安全。

關鍵字

軟弱層；非韌性配筋；結構不規則

並列摘要

The M_w 6.6 Meinong earthquake occurred on 6 February 2016 in the southern region of Taiwan. The earthquake caused significant damage in and around Tainan city, with a number of collapsed and severely damaged buildings and 117 deaths. Building reconnaissance includes commercial/residential buildings and school buildings. The observed structural damage was characteristic of non-ductile and poorly configured buildings. The collapsed buildings all contained irregularities and soft-stories. The majority of older mixed-use buildings performed adequately, but severe column failures were observed in several taller apartment buildings constructed in the 1990s. In order to reduce the risk posed by critical structural weaknesses and improve the safety and resilience of these buildings, the efficient seismic performance evaluation and monitoring methods for mid-to-high rise buildings have to be developed for emergency need. The objective of this study is to survey the effects of soft/weak first story, non-ductile reinforcement, structural irregularity and structural redundancy on the seismic performance of mid-to-high rise buildings in Taiwan. In order to upgrade the applicability of the preliminary seismic evaluation procedure of building structures, a revised draft corresponding to actual case studies are proposed. Finally, some revised recommendations are referenced for the future modification.

並列關鍵字

soft and weak story ； non-ductile reinforcements ； structural irregularity

國際替代計量

考慮台灣既有中高樓層建物特性之耐震初步評估方法研究

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