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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/818

    Title: 921地震霧峰、員林、大村、社頭地區液化災損及復舊調查之研究;The Study of 921 Chi-Chi earthquake liquefied damage and remediation in Wufeng, Yuan-Lin, Shetou and Dacun Township.
    Authors: 蕭峻銘;Chun-Ming Hsiao
    Contributors: 土木工程研究所
    Keywords: 液化分析;地理資訊系統;液化層厚度;復舊調查;thickness of liquefied layers;liquefaction analysis;GIS;remediation
    Date: 2004-06-28
    Issue Date: 2009-09-18 17:13:08 (UTC+8)
    Publisher: 國立中央大學圖書館
    Abstract: 921集集地震芮氏規模M 達7.3 (M = 7.6),同時為淺源地震兼具延時長的特性,造成中部縣市許多液化災損。本研究針對大村鄉、社頭鄉、霧峰鄉的建物因液化造成的災損及復舊進行調查並結合溫惠鈺(2002)在員林鎮所作的調查,做一完整的分析與討論。本研究蒐集大村鄉、社頭鄉、霧峰鄉地區和員林鎮之地質調查資料,根據簡易的液化評估經驗法,分析土層在不同的受震作用之下,液化潛能指數的高低,並利用地理資訊系統來展示與分析液化調查及分析的結果,探討研究區域液化的危險程度。 在調查方面,將問卷加以改良,並有效率地將其細分項目,以便做參數相關性研究能更加清楚明確,問卷內容著重在復舊方式及價錢之調查,同時也針對現地之液化表徵現象的判斷做一嚴格之篩選。 液化研究分析方面,利用4種SPT-N簡易土壤液化潛能評估法、土壤液化潛能指數分析法及簡易震陷量評估法之VB程式以及2種CPT-q 液化評估法來對研究區域的土壤液化特性作相關研究,同時並分析地質環境、舊河道等,對液化所造成的影響。 以台灣本土的液化案例得出覆土層厚度與液化層厚度對於不同加速度所得之關係曲線,並與Ishihara(1993)研究之建議曲線做一比較。研究結果也顯示出各項建物參數與沈陷量等液化分析結果的關係曲線,以供未來在類似的液化條件下,建物可能造成的損害及復舊方式做一完整性的參考依據。 The Richter magnitude(ML) of Taiwan’s 921 Chi-Chi earthquake reached 7.3 (M = 7.6), which caused a lot of liquefied damage in central provinces in Taiwan. This study analyzes the damaged buildings caused by liquefaction and discusses the remediation strategies in Wufeng Township, Shetou Township and Dacun Township. Utilizing simplified soil liquefaction assessment methods, we evaluate the potential for liquefaction by assembling geological data sets of Wufeng Township, Shetou Township, Dacun Township and Yuan-Lin Township to analyze the index for potential liquefaction. We further use the GIS to display the results of liquefaction analysis and field investigations. During our investigations, we reconstruct the questionnaires and organize it so that we can efficiently study the relative parameters more clearly. The questionnaires are geared toward measuring remediation solutions and the cost of damaged buildings. At the same time, it also evaluates the current appearance of field liquefaction. In the analysis of liquefaction, we use different simplified method of soil liquefaction assessments developed by Chung-Jung Lee (2001) and the liquefaction analysis program CPT-q method to study the liquefaction properties of soils in the regions of our study and analyze the effects of liquefaction in geological environments, such as old rivers and the like. By way of the different liquefaction cases in Taiwan, a relative curve for different accelerations is derived by the thickness of liquefied and non-liquefied layers. The results are compared with Ishihara’s results (1993). The results of this study also present relative curves of various building parameters and settlements. These findings are important for residents and/or governments that may face similar situations in the future. In other words, our findings from the relative curves are critical in predicting possible liquefaction damages and help remediate the damages more efficiently.
    Appears in Collections:[土木工程研究所] 博碩士論文

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