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標題: 以ANSYS分析建築物受火害的初步評估
A preliminary study on fire damages of buildings by ANSYS
作者: 洪崇恩
Hung, Chung-En
關鍵字: 鋼;ANSYS;火害;溫度;FDS;fire
出版社: 土木工程學系所
引用: 參考文獻 【1】 Buchanan, A., Moss, P., Seputro, J., Welsh, R., "The Effect of Stress-Strain Relationships on the Fire Performance of Steel Beams",Engineering Structures, Vol.26 pp.1505-1515, 2004. 【2】 Eurcode3, Design of Steel Structures-Part1.2: General Rules-Structural Fire Design, 2005. 【3】 Ghojel, J. I., and Wong, M. B., "Three-Sided Heating of I-Beams in Composite Construction Exposed to Fire", Journal of Constructional Steel Research, Vol.61 pp.834-844, 2005. 【4】 Li, G. Q., Wang, W. Y., Chen, S. W., "A Simple Approach for Modeling Fire-Resistance of Steel Columns with Locally Damaged Fire Protection", Journal of Constructional Steel Research, Vol.63 pp.1127-1137, 2007. 【5】 許獻鐘,"高溫中鋼結構行為之研究",朝陽科技大學 營建工程系碩士論文,2003。 【6】 EI-Rimawi, J. A., Burgess, I. W., Plank, R. J., "The Influence of Connection Stiffness on the Behavior of Steel Beams on Fire", Journal of Constructional Steel Research, Vol.43 pp.1-15, 1997. 【7】 ANSYS, “ANSYS User’s Manual Revision 8.0”, ANSYS, Inc., Canonsburg,Pennsylvania (2004). 【8】 Robert D. Cook, David S. Malkus, Michael E. Plesha, and Robert J. Witt,“ Concepts and Applications of Finite Element Analysis, ” Wiley, NewYork, pp. 454-482, 2002. 【9】 Frank Kreith, and Mark S. Bohn., “ Principles of heat transfer”,Harper &Row, New York, 1986. 【10】 NFPA 92A, Recommended Practice for Smoke-Control Systems,2000.
結構受火害時,除了會造成結構物承載力降低,也會造成邊界條件與材料性質的改變。故本研究係以有限元素法為基礎,ANSYS軟體為平台,進行火災現場溫度之模擬,求得現場各點之溫度分佈歷時,並藉由此溫度分佈歷時分析對結構物構件之影響,本研究構件以鋼材主要材質,再根據結果來對結構物進行安全評估。最後進行與FDS(Fire Dynamics Simulator)分析模擬之結果進行討論比較,藉由兩者分析結果不同之差異處進行討論,得到兩者在分析方法上的優劣之處,希望能從中得到兩個程式的不足之處並互相彌補。

When structure has damage by fire, it will cause to reduce
carrying capacity. It will also changes boundary conditions and
material properties. So this study use the finite element method and
ANSYS software for the platform to simulate the temperature of the
fire place. Expect to arrive each point of the temperature
distribution, and use this temperature distribution to analysis the
affect for structure. The study use steel for the main material. Base
on the results to assess the safety for structure. Finally, analysis of
simulation results with the FDS (Fire Dynamics Simulator) to
discuss the same and the different place, then get the advantage
and shortcoming on two analysis methods. Hope we can get the
two programs insignificance then to offset for each other.
The results show that the temperature distribution on two
programs are not the same. It may because the boundary
conditions that we consider on ANSYS are less then FDS.
However, ANSYS can do thermal analysis, stress analysis, etc.
These are something FDS can not do. Finally, based on the
difference of the two kinds of software to give the suggestion to use
in the future and continue to study’s direction.
其他識別: U0005-2208201217210100
Appears in Collections:土木工程學系所

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