焊接k型圆钢管节点抗火性能分析-fire resistance analysis of welded k - shaped round steel tube joints.docx

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焊接k型圆钢管节点抗火性能分析-fire resistance analysis of welded k - shaped round steel tube joints.docx

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焊接k型圆钢管节点抗火性能分析-fire resistance analysis of welded k - shaped round steel tube joints

slightly. Furthermore, it is also found that parameters β and θ have a slight influence on the critical temperature. The results also indicate that the critical temperature of a K-joint decreases rapidly with the increase of loading ratio and initial chord stresses. Furthermore, a simple yet reliable and accurate designed equation is proposed for predicting the static strength of tubular K-joints at elevated temperature.KEYWORDS: Circular tubular K-joint; fire resistant; critical temperature; parametric analysis; ultimate bearing capacity目录摘要............................................................................................................................................................... IABSTRACT..................................................................................................................................................II1 绪论...........................................................................................................................................................31.1 圆钢管节点介绍...............................................................................................................................31.2 问题的提出...................................................................................................................................... 51.3 管节点研究现状...............................................................................................................................61.3.1 常温下圆钢管节点的研究...................................................................................................... 61.3.2 高温下管节点的研究..............................................................................................................91.3.3 高温下管节点研究现状小结.................................................................................................111.4 本文研究方法及内容......................................................................................................................121.4.1 研究方法..........................