| 研究生: |
蘇文傑 Su, Wen-jie |
|---|---|
| 論文名稱: |
實尺寸H型梁-箱型柱彎矩接頭之火害實驗研究 The Experimental Study of Full Scale H-Beam to Box-Column Moment Connections at Elevated Temperatures |
| 指導教授: |
鍾興陽
Chung,, Hsin-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: | 2008 |
| 畢業學年度: | 96 |
| 語文別: | 中文 |
| 論文頁數: | 211 |
| 中文關鍵詞: | 火害試驗 、鋼結構 、彎矩接頭 、耐火鋼 |
| 外文關鍵詞: | Fire-Resistant Steel, Moment Connections, Steel Structures, Fire Test |
| 相關次數: | 點閱:133 下載:1 |
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本研究透過實尺寸梁柱接頭次構件試體在大型高溫爐的標準昇溫試驗,來進行國內鋼構建築常用之H型梁-箱型柱普通式與拖梁式彎矩接頭於火害下之行為研究,藉以瞭解國內常用之彎矩接頭在火害下之力學行為與破壞溫度;所有試體皆以定載加溫的方式來模擬實際梁柱接頭承受規範最大容許載重下遭遇火害之行為。本研究共進行三組實尺寸H型梁-箱型柱彎矩接頭的裸鋼高溫試驗與一組實尺寸H型梁-箱型柱彎矩接頭的常溫試驗,以供分析比對;此外,本研究也提出利用三種斷面彎矩計算值的高溫折減曲線來評估梁柱接頭在高溫下的破壞溫度的方法,並與試驗結果比較。試驗結果顯示:(1)本研究提出的破壞溫度評估方法確實能為梁柱彎矩接頭在高溫下提供不錯的破壞溫度預測值;(2)普通鋼拖梁式彎矩接頭在火害試驗的表現較普通鋼普通式彎矩接頭為佳;(3)耐火鋼拖梁式彎矩接頭在火害試驗的表現優異,確實較普通鋼拖梁式彎矩接頭在火害中能有更佳的耐火性能與時效。
This study investigates the structural behaviors in fire for the H-beam to box-column moment connections widely used in Taiwan. Three full-scale H-beam to box-column subassemblage specimens were tested under the same constant-loading and elevated-temperature condition, and one full-scale specimen was tested at ambient temperature for comparison. This study also proposed a moment reduction method to estimate the critical temperatures for moment connections in fire, and the estimated critical temperatures were compared with the test results. The results show that: (1) the proposed moment reduction method can give good estimations for the critical temperatures of moment connections in fire; (2) for normal steel connections, the flange-welded and web-welded moment connection is better than the flange-welded and web-bolted moment connection in fire; (3) the moment connection made of fire-resistant steel has much better fire-resistant performance than the normal steel moment connection.
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校內:2023-08-27公開