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工程力学  2015 

拉剪组合作用下平齐端板节点火灾行为的有限元分析

DOI: 10.6052/j.issn.1000-4750.2014.04.0342, PP. 100-106

Keywords: 钢结构,平齐端板节点,有限元模拟,高温,相关承载力

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Abstract:

常温竖向荷载作用下平齐端板节点以承受剪力为主,高温下的大变形导致梁内产生巨大的悬链拉力,节点通常在拉剪共同作用下发生破坏。采用通用有限元软件ABAQUS建立平齐端板节点的三维实体分析模型,考虑材料的非线性及节点大变形的影响,模型建立了各部件间显式的接触关系。采用试验结果对模型进行验证分析,结果表明有限元方法可以准确地模拟出节点受力及变形,同时可以方便地得到节点整个破坏过程。螺栓受力分析表明,螺栓剪力越大则其极限抗拉承载力越小。对节点进行不同荷载组合的参数分析的结果表明:节点的临界温度随着拉力或剪力的增加而降低,且剪力的影响更为显著;在所研究的参数范围内,抗拉与抗剪相关承载力基本呈负的线性关系;增加端板厚度可以有效提高节点抗拉及抗剪承载力。

References

[1]  Ding J, Wang Y C. Experimental study of structural fire behaviour of steel beam to concrete filled tubular column assemblies with different types of joints [J]. Engineering Structures, 2007, 29(12): 3485―3502.
[2]  Al-Jabri K S, Davison J B, Burgess I W. Performance of beam-to-column joints in fire-A review [J]. Fire Safety Journal, 2008, 43(1): 50―62.
[3]  Qiang X H, Bijlaard Frans S K, Kolstein H, Jiang X. Behaviour of beam-to-column high strength steel endplate connections under fire conditions-Part 1: Experimental study [J]. Engineering Structures. 2014, 64: 23―38.
[4]  余红霞. 火灾下钢节点牢固性的研究与展望[J]. 工程力学, 2011, 28(4): 116―121. Yu Hongxia. Discussions on the robustness of steel Connections in Fire [J]. Engineering Mechanics, 2011, 28(4): 116―121. (in Chinese)
[5]  陈成, 邵永波, 杨杰. T型圆钢管节点抗火性能的有限元研究[J]. 工程力学, 2013, 30(1): 229―235. Chen Cheng, Shao Yongbo, Yang Jie. Finite element analysis on fire resistance of circular tube T-joint [J]. Engineering Mechanics, 2013, 30(1): 229―235. (in Chinese)
[6]  何余良, 徐伟良. 半刚性端板连接节点在高温下的非线性有限元分析[J]. 浙江工业大学学报, 2010, 38(1): 98―101. He Yuliang, Xu Weiliang. Nonlinear finite-element analysis of semi-rigid end-plate joints in high temperature [J]. Journal of Zhejiang University of Technology, 2010, 38(1): 98―101. (in Chinese)
[7]  Al-Jabri K S, Seibi A, Karrech A. Modelling of unstiffened flush end-plate bolted connections in fire [J]. Journal of Constructional Steel Research, 2006, 62(1/2): 151―159.
[8]  Qiang X H, Bijlaard Frans S K, Kolstein H, Jiang X. Behaviour of beam-to-column high strength steel endplate connections under fire conditions - Part 2: Numerical study [J]. Engineering Structures, 2014, 64: 39―51.
[9]  Qiang X, Bijlaard F, Kolstein H, Twilt L. Numerical modelling of HSS endplate connections at elevated temperatures [C]. East Lansing, MI: Destech Publications, Inc, 2010: 671―678.
[10]  沈国辉, 陈震, 郭勇, 邢月龙, 潘峰, 孙炳楠. 螺栓节点板抗剪连接的有限元模拟方法研究[J]. 工程力学, 2013, 30(1): 119―125. Shen Guohui, Chen Zhen, Guo Yong, Xing Yuelong, Pan Feng, Sun Bingnan. Finite element simulation methods applied to bolted gusset plates used as shear connectors [J]. Engineering Mechanics, 2013, 30(1): 119―125. (in Chinese)
[11]  Yu H, Burgess I W, Davison J B, et al. Experimental and numerical investigations of the behavior of flush end plate connections at elevated temperatures [J]. Journal of Structural Engineering, 2011, 137(1): 80―87.
[12]  高义奇, 余红霞, 施刚. 火灾下拉剪组合作用对螺栓节点性能影响的试验研究[J]. 工程力学, 2014, 31(9): 97―103. Gao Yiqi, Yu Hongxia, Shi Gang. Experimental research on the behavior of bolted connections under the combined effect of tension and shear in fire. [J] Engineering Mechanics. 2014, 31(9): 97―103. (in Chinese)
[13]  ABAQUS Inc. ABAQUS Analysis User’s Manual Version 6.5 [M]. Providence: ABAQUS Inc. 2004.
[14]  BS EN 1993-1-2, Eurocode 3: Design of steel structures, Part 1.2: General rules-Structural fire design [S]. London: British Standards Institution, 2005.
[15]  Yu H, Burgess I W, Davison J B, et al. Numerical simulation of bolted steel connections in fire using explicit dynamic analysis [J]. Journal of Constructional Steel Research, 2008, 64(5): 515―525.

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