鋼筋混凝土建築物非線性推垮分析NCREE程式應用之驗證

The Identification of the NCREE's Program for the Nonlinear Pushover Analysis of Reinforced Concrete Buildings

曾立明(Li-Ming Tseng)

指導教授 ： ARRAY(0xcaef050)

中原大學/工學院/土木工程研究所/碩士(2010年)

https://doi.org/10.6840/CYCU.2010.00618

摘要

台灣地震頻繁，歷年來幾次大地震中，校舍損毀情況相當嚴重，因此對於既有校舍之耐震能力評估方式，國家地震中心發展了一套針對中小學校舍進行耐震評估及補強的輔助程式。
國震中心從2005年至2007年進行大型實體結構物的現地試驗，來供理論進行分析比對，而所用來試驗之學校包括花蓮縣新城國中、雲林縣口湖國小、桃園縣瑞埔國小及台南縣關廟國小。除此之外國震中心針對集集地震另有建立南投縣中小學校舍震損資料庫。
本文採用上述之現地試驗校舍，包括空構架及口湖國小RC翼牆補強構架及關廟國小RC擴柱補強構架，以及校舍震害資料庫中35棟校舍樣本，使用非線性結構分析軟體ETABS進行推垮分析，而其中非線性鉸以國家地震中心耐震能力評估輔助程式加以計算及設定。驗證其輔助程式之合理性與可行性。

關鍵字

ETABS ； 推垮分析 ； 耐震能力評估 ； 現地試驗 ； 資料庫

並列摘要

Based on the observations made after the Chi-Chi earthquakes occurred in Taiwan, school building has been found most seriously damaged among all building types. Although the seismic design force for school buildings has been 25% higher than the ordinary buildings, serious casualties and losses may be resulted from the collapse of school buildings under strong earthquake. Seismic evaluation and retrofit of these numerous vulnerable school buildings is an important societal issue to be resolved.

National Center for Research on Earthquake Engineering (NCREE) preceded a series of in-situ pushover experiments for school buildings. From 2005 to 2007, several school field tests include Sin-Chen junior high school, Kou-Hu elementary school, Rei-Pu elementary school, and Guan-Miau elementary school performed by NCREE. Besides, NCREE also built a damage database of school buildings for Chi-Chi earthquake in the midland of Taiwan.

A method of seismic evaluation for existing buildings needs to be confirmed. Base on the capacity spectrum method proposed by ATC-40, this study has developed a seismic evaluation method by using pushover analysis. The properties of nonlinear hinges for nonlinear pushover analysis with low-rise RC structure have been determined. However, different definitions of nonlinear hinges will cause different solutions. The verifications with the field test results and 35 typical school buildings damage by the Chi-Chi earthquake are discussed in this article. In the conclusion, the proposed pushover analysis is beneficial for seismic evaluation with existing school buildings.

並列關鍵字

field test ； seismic evaluation ； pushover analysis ； ETABS ； Chi-Chi earthquake

參考文獻

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