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新竹科學園區1990年代之十層樓鋼構造標準廠房微振動長期監測及耐震能力評估

Long-Term Micro-Vibration Monitoring and Seismic Performance Evaluation of an Existing 10-Story Steel Factory in Hsinchu Science Park

摘要


新竹科學園區建立於1979年,為臺灣重要經濟支柱,然而臺灣地震頻繁,平時的微振動影響廠內精密儀器的精度以及製程良率,中小型地震下可能造成儀器損壞;強震則可能造成結構物破壞,危及廠內生命財產。為瞭解各種等級振動對既有廠房的影響,本研究在科技部的補助下以新竹科學園區內於1991年完成設計,1995年完工的第一座鋼構造高層標準廠房進行長期微振動監測以及耐震能力評估;監測系統蒐集該廠房2015年1月至2015年10月的微振動資料,並分析微振動等級及來源,監測期間收集多次中小型地震紀錄,並涵蓋數次的強颱事件(如2015年蘇迪勒及杜鵑颱風),瞭解結構物在地震力及風力擾動下的反應特性。為瞭解廠房是否滿足現行規範的耐震要求,本研究根據1989年臺灣建築技術規則與現行臺灣建築物耐震設計規範(2011)計算地震力,並利用長期監測資料校正廠房的數值分析模型,進行結構物非線性側推分析與設計地震力(DBE)及最大考量地震力(MCE)下的20組非線性地震歷時分析,評估此廠房耐震能力。

並列摘要


The Hsinchu Science Park was opening in 1979 and becomes a very important high-tech area in Taiwan to support the economic growth. This work supported by the MOST, Taiwan focused on the micro-vibration and seismic performance of an existing 10-story steel factory that was designed in 1991 and completed in 1995 in Hsinchu Science Park, Taiwan. A few velocity and acceleration meters were used to monitor the building micro-vibration and performance during earthquakes and typhoons. The monitoring duration is from January to October, 2015 while Typhoons Soudelor and Dujuan and several small earthquakes hit the building. The recorded data was used to (1) evaluate the factory performance in terms of micro-vibration in vertical and longitudinal directions, and (2) adjust the building computer model such as the fundamental period and damping ratio. Then, the nonlinear pushover analysis and time history analyses were conducted on the factory model to obtain seismic demands on design-based and maximum-considered earthquake levels.

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