| 受拉焊接空心球节点火灾高温下的性能分析 |
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| 引用本文： | 邱林波,薛素铎,李雄彦,冯淼. 受拉焊接空心球节点火灾高温下的性能分析[J]. 建筑钢结构进展, 2011, 13(3): 9-14 |
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| 作者姓名： | 邱林波 薛素铎 李雄彦 冯淼 |
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| 作者单位： | 1. 中冶建筑研究总院有限公司,北京,100088;北京工业大学空间结构研究中心,北京,100124
2. 中冶建筑研究总院有限公司,北京,100088 |
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| 基金项目： | 北京市自然科学基金(8082004); 北京工业大学博士研究生创新计划(bcx-2009-022) |
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| 摘 要： | 基于火灾高温下空间网格结构的性能,本文根据欧洲规范了中高温下的钢材特性和国际标准升温曲线(ISO834),对单轴受拉焊接空心球节点高温下的性能进行了数值模拟,分析了空心球的温度场分布规律和极限耐火时间的影响因素。通过分析高温下空心球的应力和位移变化特征,确定了其破坏模式;结果表明钢管根部和赤道处是其高温下受拉承载力的薄弱环节。
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| 关 键 词： | 焊接空心球节点 火灾 有限元分析 受拉性能 |
Tension Performance of Welded Hollow Spherical Joints under Fire |
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| QIU Lin-bo,XUE Su-duo,LI Xiong-yan,FENG Miao. Tension Performance of Welded Hollow Spherical Joints under Fire[J]. Progress in Steel Building Structures, 2011, 13(3): 9-14 |
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| Authors: | QIU Lin-bo XUE Su-duo LI Xiong-yan FENG Miao |
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| Affiliation: | QIU Lin-bo1,2,XUE Su-duo1,LI Xiong-yan1,FENG Miao1(1.Central Research Institute of Building and Construction Co.,Ltd.MCC Grop,Beijing 100088,China,2.Research Center on Spatial Structures of Beijing University of Technology,Beijing 100124,China) |
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| Abstract: | Based on the properties and stress characteristics of space frame structures under fire,the tension properties of the welded hollow spherical joints under fire are numerically simulated with the thermal parameters of steel specified in the EUROCODE 3 and the standard fire temperature-time curve ISO834.The distribution law of the temperature fields and the influencing factors of the ultimate fire resistant duration are analyzed.By analyzing the stress and displacement variation characteristics of the hollow ... |
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| Keywords: | welded hollow spherical joint fire finite element analysis tension performance |
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