Experimental Research on Fire Resistance of Prefabricated Steel Bracket Connection

Bing LIU; Xiaoyong MAO; Bin QIAM; Zhaoyu WU

doi:10.13409/j.cnki.jdpme.20201103002

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Experimental Research on Fire Resistance of Prefabricated Steel Bracket Connection

更新时间：2025-09-25

- Experimental Research on Fire Resistance of Prefabricated Steel Bracket Connection
- Journal of Disaster Prevention and Mitigation Engineering Vol. 42, Issue 4, Pages: 826-834(2022)
- 作者机构：
  
  1.苏州科技大学土木工程学院，江苏苏州 215011
  2.苏州科技大学江苏省结构工程重点实验室，江苏苏州 215011
- 作者简介：
- 基金信息：
- DOI：10.13409/j.cnki.jdpme.20201103002
  CLC： TU443
- Received：03 November 2020，
  
  Revised：2020-12-25，
  
  Published：28 August 2022
- 稿件说明：
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刘冰,毛小勇,钱斌等.装配式钢牛腿连接节点耐火性能试验研究[J].防灾减灾工程学报,2022,42(04):826-834.

LIU Bing,MAO Xiaoyong,QIAM Bin,et al.Experimental Research on Fire Resistance of Prefabricated Steel Bracket Connection[J].Journal of Disaster Prevention and Mitigation Engineering,2022,42(04):826-834.
刘冰,毛小勇,钱斌等.装配式钢牛腿连接节点耐火性能试验研究[J].防灾减灾工程学报,2022,42(04):826-834. DOI： 10.13409/j.cnki.jdpme.20201103002.

LIU Bing,MAO Xiaoyong,QIAM Bin,et al.Experimental Research on Fire Resistance of Prefabricated Steel Bracket Connection[J].Journal of Disaster Prevention and Mitigation Engineering,2022,42(04):826-834. DOI： 10.13409/j.cnki.jdpme.20201103002.

摘要

为了解一种新型装配式钢牛腿节点的抗火性能，进行了3个ASTM‑E119升温模式下钢牛腿节点抗火性能试验，参数包括不同肋板厚度、不同荷载大小和偏心距。获得了钢牛腿的温度分布、节点变形、破坏形态和耐火极限。建立了节点抗火分析有限元模型，通过与试验数据对比验证了模型的准确性。研究结果表明：肋板温度达700 ℃时节点承载能力剧烈下降，栓钉温度达660 ℃左右时节点达到极限状态。节点的破坏由肋板屈曲和栓钉拉断控制，破坏呈现出一定的脆性（变形急剧增大）。随偏心距和荷载的增大钢牛腿的耐火极限减小；随肋板厚度增大节点耐火极限增大，但增加的幅度有限。栓钉和肋板的破坏临界温度可为连接节点的抗火设计提供参考。

Abstract

Three fire-resistance tests on a new type of prefabricated steel bracket connection with different rib thickness， loads and eccentricities were conducted under the ASTM-E119 temperature curve to investigate the fire-resistance behavior of the connection. The temperature distribution， deformation， failure mode， and fire-resistance of the connection were obtained. The finite element model of the fire-resistance analysis of the connection was established， and the accuracy of the model was verified by the experimental data. The results show that the bearing capacity of the ribs drops sharply at 700 ℃， and the studs reach a bearing capacity limit at about 660 ℃. The failure of the connection is controlled by the buckling of the ribs or the breakage of the studs. The failure shows a certain degree of brittleness （deformation increases sharply）. With the increase of eccentricity and load， the fire-resistance of steel brackets decreases. There is a limited enhancement of fire-resistance by increasing the rib thickness. The critical temperature of studs and ribs was given， which can be used as a reference for the fire-resistance design of this kind of connection.

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references

刘学春，商子轩，张冬洁，等 . 装配式多高层钢结构研究要点与现状分析［J］. 工业建筑， 2018 ， 48 （ 5 ）： 1 - 10 .

Liu X C ， Shang Z X ， Zhang D J ， et al . Research key points and present situation analysis of prefabricated multi-story and high-rise steel structures ［J］. Industrial Construction ， 2018 ， 48 （ 5 ）： 1 - 10 . （in Chinese）

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 .

李国强，殷颖智 . 钢结构高强度螺栓连接抗火性能的有限元分析［J］. 土木工程学报， 2003 ， 36 （ 6 ）： 19 - 25 .

Li G Q ， Yin Y Z . Fire-resistant behavior of high-strength bolted connections for steel structures ［J］. China Civil Engineering Journal ， 2003 ， 36 （ 6 ）： 19 - 25 . （in Chinese）

Wang W Y ， Li G Q ， Dong Y L . Experimental study and spring-component modelling of extended end-plate joints in fire ［J］. Journal of Constructional Steel Research ， 2007 ， 63 （ 8 ）： 1127 - 1137 .

王卫永，董毓利，李国强 . 外伸端板节点火灾行为的试验研究和理论分析［J］. 哈尔滨工业大学学报， 2006 ， 38 （ 12 ）： 2125 - 2128 .

Wang W Y ， Dong Y L ， Li G Q . Experimental and analytical studies on extended end-plate connection in fire ［J］. Journal of Harbin Institute of Technology ， 2006 ， 38 （ 12 ）： 2125 - 2128 . （in Chinese）

Yu H ， Burgess I W ， Davison J B ， et al . Experimental investigation of the behaviour of fin plate connections in fire ［J］. Journal of Constructional Steel Research ， 2009 ， 65 （ 3 ）： 723 - 736 .

Yu H ， Burgess I W ， Davison J B ， et al . Development of a yield-line model for endplate connections in fire ［J］. Journal of Constructional Steel Research ， 2009 ， 65 （ 6 ）： 1279 - 1289 .

Tan K H . Finite element modeling and component-based approach of steel and composite steel joints at elevated temperatures ［J］. Journal of Disaster Prevention and Mitigation Engineering ， 2012 ， 32 （ 3 ）： 253 - 266 .

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 H X . Discussions on the robustness of steel connections in fire ［J］. Engineering Mechanics ， 2011 ， 28 （ 4 ）： 116 - 121 . （in Chinese）

Fire-resistance tests-elements of building construction ： ISO‑834 ［S］.［ S.l. ］： International Standard ， 1980 .

European committee for standardization， ENV1993-1-2， Eurocode3， design of steel structures， part1.2： structural fire design ［S］.［ S.l. ］： European Committee for Standardization ， 1993 .

Lie T T ， Irwin R J . Fire resistance of rectangular steel columns filled with bar-reinforced concrete ［J］. Journal of Structural Engineering ， 1995 ， 121 （ 5 ）： 797 - 805 .

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