| 研究生: |
鄭瑋 Chen, Wayne |
|---|---|
| 論文名稱: |
實尺寸複合梁鋼構架高溫火害行為之數值模擬 The Numerical Simulations for the Full-Scale Composite Beams in Steel Frames at Elevated Temperatures |
| 指導教授: |
鍾興陽
Chung, Hsing-Yang |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 土木工程學系 Department of Civil Engineering |
| 論文出版年: | 2011 |
| 畢業學年度: | 99 |
| 語文別: | 中文 |
| 論文頁數: | 351 |
| 中文關鍵詞: | 火害 、懸垂效應 、耐火鋼 、複合梁 、潛變 、混凝土樓板 、非線性有限元素法 |
| 外文關鍵詞: | Fire, Catenary Effect, Fire-Resistant Steel, Composite Beam, Creep, Concrete Slab, Nonlinear Finite Element Method |
| 相關次數: | 點閱:107 下載:1 |
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本研究結合動態火場模擬軟體FDS和三維非線性有限元素軟體ABAQUS來模擬實尺寸H型梁和複合梁鋼構架在高溫爐中受定載升溫的高溫火害行為,分別探討高溫下鋼材的潛變效應和混凝土樓板的複合效應對整體鋼構架所造成的影響,此外,本研究亦探討於梁柱接頭處進行各種補強和切削的鋼構架在高溫火害下梁構件的結構行為、破壞模式與耐火性能。研究結果顯示:忽略鋼材潛變效應可能造成模擬結果準確性降低或不保守,但忽略混凝土樓板將高估鋼梁之溫度,導致鋼梁提早進入懸垂效應,使得模擬結果過於保守。此外,本研究模擬之各種補強和切削方式在經過比較之後可以發現,無論是H型梁還是複合梁鋼構架,所研究的耐火鋼補強之試體在耐火性能上皆有提升;在側撐條件充足的情況下,對梁柱接頭處進行圓弧式切削的試體在火害下的行為與未切削的試體類似。
This study combined the fire dynamic simulator FDS and the 3-D nonlinear finite-element program ABAQUS to simulate the structural behaviors of the full-scale H-beam and composite-beam steel frames subject to constant load and elevated temperatures in a furnace. The influences of creep effect of steel and composite effect of concrete slab on the steel frames in fire were investigated respectively. In addition, this study also investigated the structural behaviors, failure modes and fire-resistant performances of the steel frames, which took various strengthened and reduced measures at the beam sections adjacent to the beam-to-column connections. The study results showed that neglecting the high temperature creep effect of steel might result in less precise and unconservative simulation results. However, neglecting the concrete slab effect might overestimate the steel beam temperatures and might result in conservative simulation results due to the earlier catenary effect of steel beam. Besides, after the comparisons, the simulation results of the strengthened and reduced measures taken in the beam sections for this study found that, no matter for the H-beam steel frames or the composite-beam steel frames, the studied specimens strengthened using fire-resistant steel all had improvements in fire-resistant performances. The specimens using radius-cut reduced beam section had the similar behaviors in fire to those of the uncut specimens if the lateral supports for the steel beams were sufficient.
ABAQUS HTML Documentation, “User’s Manual,” Dassault Systèmes Simulia Corp., Providence, RI, USA.
Nassour, A., Bose, W.W. and Spinelli, D., “Creep Properties of Austenitic Stainless-Steel Weld Metals,” Journal of Materials Engineering and Performance, Vol. 10, No. 6, pp. 693-698, (2001).
British Standard Institution (BSI), “British Standard BS476, Part 20: Method for Determination of the Fire Resistance of Elements of Construction”, London, (1987).
Engelhardt, M.D., Winneberger, T., Zekany, A.J., and Potyraj, T., “Experimental Investigation of Dogbone Moment Connections,” Engineering Journal, Vol. 35, No. 4, pp. 128-139, AISC, (1998).
Eurocode-2,“Design of Concrete Structures-Part1.2:General Rules-Structural Fire Design,” ENV1992-1-2, (1995).
Eurocode-3, “Design of Steel Structure-Part1.2:General Rules-Structural Fire Design,” ENV1993-1-2, (1995).
Floyd, J.E., McGrattan, K.B., Hostikka, S. and Baum, H.R., “CFD Fire Simulation Using Mixture Fraction Combustion and Finite Volume Radiative Heat Transfer,” Journal of Fire Protection Engineering , Vol. 13, No. 1, pp. 11-36, (2003).
ISO 834-1, “Fire-Resistance Tests, Elements of Building Construction-Part 1:General Requirements,” (1999).
Kodur, V.K.R. and Dwaikat, M.M.S., “Response of Steel Beam-Columns Exposed to Fire,” Journal of Engineering Structures , Vol. 31, No. 2, pp. 369-379, (2009).
Kirchhof, L.D., Neto, J.M., Malite, M. and Gonçalves, R.M., “Numerical Analysis of Composite Steel-Concrete Beams in Ambient Temperature and in Fire Situation,” Exact and Technological Sciences , Vol. 26, No. 1, pp. 69-82, (2005).
Lee, J. and Fenves, G.L., “Plastic-Damage Model for Cylic Loading of Concrete Structure,” Journal of Engineering Mechanics , Vol. 124, No. 8, pp. 892-900, (1998).
Lubliner, J., Oliver, J., Oller, S. and Oate, E., “A Plastic-Damage Model for Concrete,” International Journal of Solids and Structure , Vol. 25, No. 3, pp. 299-326, (1989).
Luecke, W.E., McCowan, C.N. and Banovic, S.W., “Mechanical Properties of Structural Steels,” Federal Building and Fire Safety Investigation of the World Trade Center Disaster, National institute of Standards and Technology, (2005).
Dharma, R.B. and Tan, K.H., “Experimental and Numerical Investigation on Ductility of Composite Beams in the Hogging Moment Regions under
Fire Conditions,” Journal of Structural Engineering , Vol. 134, No. 12, pp. 1873-1886, (2008).
Okabe, T., “Constitutive Model and Finite Element Procedure for the Analysis of the Inelastic Behavior of Steel Columns in Fire,” J. Temporal Des. Arch. Environ. 9(1) , Vol. 9, No. 1, pp. 85-88, (2009).
Tan, E.L. and Uy, B., “Experimental Study on Straight Composite Beams Subjected to Combined Flexure and Torsion,” Journal of Constructional Steel Research , Vol. 65, No. 4, pp. 784-793, (2009).
Tan, E.L. and Uy, B., “Nonlinear Analysis of Composite Beams Subjected to Combined Flexure and Torsion,” Journal of Constructional Steel Research , Vol. 67, No. 5, pp. 790-799, (2011).
Wainman, D.E. and Kirby, B.R., “Compendium of UK Standard Fire Test Data Unprotected Structural Steel-1,” Ref. No. RS/ RSC/ S10328/1/
87/B. Rotherham (UK): Swinden Laboratories, British Steel Corporation, (1988).
Huanga, Z., Burgessa, I.W. and Plankb, R.J., “The Influence of Shear Connectors on the Behaviour of Composite Steel-Framed Buildings in Fire,” Journal of Constructional Steel Research , Vol. 51, No. 3, pp. 219-237, (1999).
中華民國結構工程學會,「鋼結構設計手冊(極限設計法)」,科技圖書股份有限公司,(2005)。
內政部營建署,「鋼構造建築物鋼結構施工規範」,(2007)。
方朝俊,「火害對耐火鋼構件銲接及栓接行為影響」,國立台灣科技大學營建工程學系,台北 (2000)。
邱健倫,“密閉空間火場模擬及熱應力分析”,國立成功大學航空太空工程學系,台南 (2007)。
林子賓,「高溫下螺栓孔承壓能力之研究」,國立成功大學土木工程學系,台南 (2006)。
林日增,「H型梁-箱型柱耐火彎矩接頭高溫行為之數值模擬」,國立成功大學土木工程學系,台南 (2008)。
吳家豪,「補強式梁柱韌性接頭高溫抗彎行為之數值模擬」,國立成功大學土木工程學系,台南 (2009)。
洪健晉,「高強度螺栓於高溫下之抗剪行為量測與數值模擬」,國立成功大學土木工程學系,台南 (2008)。
陳景智,「實尺寸H型鋼構架高溫火害行為之數值模擬」,國立成功大學土木工程學系,台南 (2009)。
陳諺輝,「螺栓孔於高溫下承壓行為之量測與數值模擬」,國立成功大學土木工程學系,台南 (2006)。
愛發股份有限公司編著,“ABAQUS實務入門引導”,全華科技圖書股份有限公司印行,台北(2005)。
蘇文傑,“實尺寸H型梁-箱型柱彎矩接頭之火害實驗研究”,國立成功大學土木工程學系,台南 (2008)。