Fundamental Behavior of Steel Beam-Columns and Columns under Fire Loading: Experimental Evaluation
Fundamental Behavior of Steel Beam-Columns and Columns under Fire Loading: Experimental Evaluation
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DOI：
10.1061/(asce)st.1943-541x.0000446
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发表时间：
2011-09
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影响因子：
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通讯作者：
L. Choe;A. Varma;A. Agarwal;A. Surovek
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文献类型：
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作者：
L. Choe;A. Varma;A. Agarwal;A. Surovek
本文介绍了为确定钢构件在火灾荷载下的基本性能而进行的试验研究结果。共有11个足尺钢构件在热荷载和结构荷载联合作用下进行了试验。首先，进行了5根A992钢压杆(W10×68)在高温和不同轴向荷载水平下的基本弯矩-曲率响应试验。实验方法包括使用辐射加热和控制设备施加热载荷，并结合近景摄影测量和数字图像处理技术测量加热区的变形(曲率)。接下来，对6根A992钢宽翼板(W8×35和W14×53)柱进行了高温下的弹塑性屈曲性能和轴向荷载-位移响应试验。设计了一个自反应试验架，对柱状试件进行轴向加载和加热。施加热载荷的方法是使用相同类型的...
This paper presents the results of experimental investigations conducted to determine the fundamental behavior of steel members under fire loading. A total of eleven full-scale steel members were tested under combined thermal and structural loading. First, five A992 steel beam-columns (W10×68) were tested to determine their fundamental moment-curvature responses at elevated temperatures and different axial load levels. The experimental approach involved the use of radiant heating and control equipment to apply the thermal loading, and close-range photogrammetry combined with digital image processing techniques to measure the deformations (curvature) in the heated zone. Next, six A992 steel wide-flange (W8×35 and W14×53) columns were tested to determine their inelastic buckling behavior and axial load-displacement responses at elevated temperatures. A self-reacting test frame was designed to subject the column specimens to axial loading and heating. The thermal loading was applied by using the same type of...