- 學位論文
鋼筋混凝土樑受火害後破壞模式數值模擬
Numerical simulation of breakage modes of the Reinforced Concrete beam after a fire
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摘要
本研究針對模擬真實火場對鋼筋混凝土樑所造成的火害破壞模式數值模擬及預測混凝土剝落時刻和溫度並對混凝土拉伸強度做分析之影響，與樑受火害時對樑之混凝土預測剝落狀況。 一般來說，對混凝土剝落狀態是非常複雜的，因為它是受到很多個因素所牽連的；由於火災引起的混凝土剝落結構已被觀察到在實驗數據及在真實火災條件下。故本研究首先以FDS火災模擬軟體模擬單一區間樑受火害時之火場溫度，再以PHOENICS熱流模擬軟體分析鋼筋混凝土複合矩形樑內部溫度分佈，用不同熱釋放率大小探討樑受火害時對混凝土滲透破壞值來預測到剝落時刻及溫度並對混凝土拉伸強度做分析之影響，期望能提供鋼筋混凝土樑受火害後預測剝落分析方法及結構安全的數值估算方法供參考與應用。
並列摘要
In this study, simulate the real fire scenarios of reinforced concrete(RC) beam that fire damage to caused by numerical simulation. The failure modes prediction to concrete spalling time and temperature, and that for concrete tensile strength make analysis of the effects. and beam of fire damage that prediction to spalling of concrete beams state. In general, spalling of concrete state is very complex, because it is affected by many factors is implicated; due to fire caused by concrete spalling the structure has been observed in experimental data and in real fire disaster of conditions under. Therefore, this study to first ,by FDS fire simulation software to simulate single interval ,and beam of by fire damage and the fire temperature, then by PHOENICS heat flow simulation software Analysis reinforced concrete composite rectangular beam of internal temperature distribution, and by different sizes of Heat release rate, Analysis to reinforced beam concrete by it given to permeability damage value of prediction to concrete spalling time and temperature and tensile strength of concrete make the effects of analysis. Expectation to provide reinforced concrete(RC) beam of by after fire damage; predict to spalling analysis method and structural safety of the numerical estimation method for reference and application.
參考文獻
【10】 王士承, 林誠興，「建築物火災鋼筋混凝土樑溫度分佈與極限強度分析」
【1】 Andrew Hamilton Buchanan, “Structural Design for Fire Safety”,WILEY,
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【2】 M.B.Dwaikat,V.K.R. Kodur*,“Hydrothermal model for predicting fire-induced spalling in concrete structural systems”,Fire safety journal ,44(2009)425-434.
【3】 M.B.Dwaikat* and V.K.R.Kodur, Department of CEE, “Fire Induced Spalling in High Strength Concrete Beams”,Fire Technology,46,251-274,2010.
延伸閱讀
- 黃彰斌、林誠興、徐瑞祥（2006）。鋼筋混凝土樑受火害時之溫度分佈與殘餘強度分析。技術學刊，21(2)，175-187。https://doi.org/10.29507/JT.200606.0009
- 林誠興、王士承、周國達、陳德啟（2010）。火害後鋼筋混凝土樑極限強度分析。南亞學報，(30)，59-82。https://doi.org/10.6989/JN.201012.0059
- 陳威志（2012）。火害後鋼筋混凝土柱之破壞行為研究〔碩士論文，元智大學〕。華藝線上圖書館。https://doi.org/10.6838/YZU.2012.00355
- 張為舜（2011）。火害後鋼筋混凝土柱的力學性質與破壞模式分析〔碩士論文，元智大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0009-2801201415000210
- Afolayan, J. O., Babalola, O. E., Awoyera, P. O., Adekeye, A. W., & Ishola, F. A. (2016). Numerical Modelling of Retrofitted Reinforced Concrete Building Frames. Research Journal of Applied Sciences, Engineering and Technology, 12(2), 206-213. https://www.airitilibrary.com/Article/Detail?DocID=20407467-201601-201602190047-201602190047-206-213