| 研究生: |
楊天翔 Yang, Tian-Shiang |
|---|---|
| 論文名稱: |
梁柱鋼結構加溫冷卻影響之數值模擬 Numerical simulations of effects of steel beam-column connections with heating and cooling phases |
| 指導教授: |
林三益
Lin, San-Yih |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 航空太空工程學系 Department of Aeronautics & Astronautics |
| 論文出版年: | 2008 |
| 畢業學年度: | 96 |
| 語文別: | 中文 |
| 論文頁數: | 99 |
| 中文關鍵詞: | 剪應力 、軸向應力 、有限元素分析法 、鋼梁柱結構 、升溫 、降溫 |
| 外文關鍵詞: | steel beam-column connection, heating and cooling phases, axial stress, shear stress, finite element method |
| 相關次數: | 點閱:108 下載:4 |
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在本論文中,利用數值方法來模擬鋼梁柱結構受高溫受熱後冷卻反應,分析其力學特性及結構行為與溫度邊件條件之相互影響。本文採用有限元素分析軟體ANSYS為數值模擬工具,其數值方法選用Newton-Raphson法來求解非線性結構方程式。
在程式驗証方面,以簡支梁架構及國外小尺寸鋼結構梁柱接頭高溫受熱試驗二個範例分析其結構行為並驗證其可行性。
本文研究之物理模型以二柱一梁做為鋼組合結構,梁上受均佈載重影響下,環境溫度以線性升溫或CNS火場升溫曲線高溫受熱後,再以線性降溫方式冷卻其鋼結構,討論其鋼材高溫材料性質及結構內力行為。
比較計算結果之不同升溫及降溫速度設計對數值分析結果的影響,結果皆能得到合理之物理特性。
This study used to prove the feasibility that it analyses the structural behavior of simple support steel structure and the test of full-scale joints of steel sub-structure at elevated temperature by ANSYS software.
It simulates effects of steel beam-column with heating and cooling phase. This paper studies the effect on the behavior of steel structure in the event of fire. The software, ANSYS, with Newton-Raphson scheme is used to simulate the behavior of steel structure. This research describes a series of heating and cooling temperature tests conducted on steel beam-column connections. This studies indicate that, since the slope of cooling phase is steeper, the axial stress force at the cooling phased is higher than it at the heating phase.
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