[1]朱美春,程亮,李国强,等.正面角焊缝连接高温后的强度试验[J].深圳大学学报理工版,2016,33(6):620-626.[doi:10.3724/SP.J.1249.2016.06620]
 Zhu Meichun,Cheng Liang,Li Guoqiang,et al.Experiment on strength of transverse fillet weld connections after high temperature treatment[J].Journal of Shenzhen University Science and Engineering,2016,33(6):620-626.[doi:10.3724/SP.J.1249.2016.06620]
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正面角焊缝连接高温后的强度试验()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第33卷
期数:
2016年第6期
页码:
620-626
栏目:
土木建筑工程
出版日期:
2016-11-20

文章信息/Info

Title:
Experiment on strength of transverse fillet weld connections after high temperature treatment
文章编号:
201606011
作者:
朱美春1程亮2李国强3王英1
1)上海师范大学建筑工程学院,上海 201418
2)中国电力工程顾问集团中南电力设计院有限公司,湖北武汉 430071
3)同济大学土木工程防灾国家重点实验室,上海200092
Author(s):
Zhu Meichun1 Cheng Liang2 Li Guoqiang3 and Wang Ying1
1) College of Civil Engineering, Shanghai Normal University, Shanghai 201418, P.R.China
2) Central Southern China Electric Power Design Institute, China Power Engineering Consulting Group, Wuhan 430071, Hubei Province, P.R.China
3) State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, P.R.China
关键词:
结构工程钢结构焊缝连接正面角焊缝强度实验高温过火安全性鉴定冷却方式
Keywords:
structure engineering steel structure welded connection transverse fillet weld strength experiment high temperature annealing safety identification cooling method
分类号:
TU 391;TU 502+.6
DOI:
10.3724/SP.J.1249.2016.06620
文献标志码:
A
摘要:
为研究高温过火对正面角焊缝残余强度的影响规律,对43个Q345B钢材双盖板正面角焊缝连接试件进行高温冷却后的拉伸试验. 试件统一设计为正面角焊缝发生断裂,试验参数为过火温度和冷却方式,其中过火温度介于200~900 ℃,冷却方式包括自然冷却和泼水冷却. 结果表明,高温自然冷却后正面角焊缝破坏面角度平均值为19°, 泼水冷却后为16°, 与理论值45°相差较大;正面角焊缝残余强度随过火温度的升高而下降,泼水冷却情况下强度降低更显著, 最大降低幅度达到37%;采用三直线模型计算高温后残余强度降低系数,计算结果与试验值吻合良好. 可供火灾后钢结构安全性鉴定参考.
Abstract:
We investigate the effect of heating and cooling on strength of transverse fillet weld connections by tensile test. Fourty-three connection specimens made up of four Q345B steel plates and with four transverse fillet welds were heated to a specified target temperature, then cooled to the ambient temperature, and finally loaded to failure. Experimental parameters are the heating temperature and the cooling method. Seven temperature levels from 200 ℃ to 900 ℃ and two cooling methods including natural cooling and water cooling were chosen. Experimental results show that the average value of fracture angles is 19° for natural cooling specimens, and the value is 16° for water cooling specimens, both quite different from the theoretical value 45°. The post-fire residual strength reduces with the increase of the heating temperature, and generally water cooling leads to higher degradation in strength than natural cooling, whose maximum reduction rate reaches 37%. Tri-linear model is proposed to calculate the variation factor of the post-fire residual strength. The calculated value matches well with the experimental result, which can provide reference for safety identification of steel structures after fire.

参考文献/References:

[1] Liao Fangfang, Wang Wei, Chen Yiyi. Ductile fracture prediction for welded steel connections under monotonic loading based on micromechanical fracture criteria[J]. Engineering Structures, 2015, 94: 16-28.
[2] Cui Yao, Asadac H, Kishikia S, et al. Ultimate strength of gusset plate connections with fillet welds[J]. Journal of Constructional Steel Research, 2012, 75: 104-115.
[3] 魏晨熙. Q460高强度钢材焊缝连接受力性能和计算模型研究[D]. 北京:清华大学,2013.
Wei Chenxi. Research on the structural performance and calculation model of Q460 high strength steel weld connection[D]. Beijing:Tsinghua Universtiy,2013.(in Cinese)
[4] Mahmood Y, Saedi D A. The study of welded semi-rigid connections in fire[J]. Structural Design of Tall & Special Buildings, 2013, 22(10):783-801.
[5] 李利萍, 王晓纯, 潘一山,等. 受火方式和防火层对梁柱全焊节点抗火性能影响分析[J]. 火灾科学, 2014, 23(1):22-27.
Li Liping, Wang Xiaochun, Pan Yishan, et al. Influence of bearing fire mode and fire protection layer to fire resistance performance of beam-to-column welded connection joint[J]. Fire Safety Science, 2014, 23(1):22-27.(in Chinese)
[6] 陈建锋, 曹平周, 董先锋. 高温后正面角焊缝抗拉剪切强度的试验[J]. 焊接学报, 2009, 30(9): 81-84.
Chen Jianfeng, Cao Pingzhou, Dong Xianfeng. Experiment on tensile and shear strength of front fillet welded joint post high temperatures[J]. Transactions of the China Welding Institution, 2009, 30(9): 81-84.(in Chinese)
[7] Kathryn A C. Strength of transverse fillet welds at elevated and post-elevated temperatures[D]. Lehigh,USA:Lehigh University, 2009.
[8] Hanus F,Zilli G,Franssen J M. Experimental tests and analytical models for welds and grade 8.8 bolts under heating and subsequent cooling[J]. Journal of Structural Fire Engineering, 2011, 2(3): 181-194.
[9] 程亮,朱美春,李国强.对接焊缝连接高温后力学性能试验研究[J]. 工程力学, 2015, 32(S1): 298-303.
Cheng Liang, Zhu Meichun, Li Guoqiang. Experimental study on post-elevated temperature mechanical properties of butt-welded connections[J]. Engineering Mechanics, 2015, 32(S1): 298-303.(in Chinese)
[10] 朱美春, 程亮, 李国强, 等. 钢结构侧面角焊缝连接火灾后力学性能研究[J]. 建筑材料学报, 2016, 19(4):690-695.
Zhu Meichun, Cheng Liang, Li Guoqiang, et al. Research on mechanical behavior of longitudinal fillet welded connections in steel structures after fire[J]. Journal of Building Materials, 2016, 19(4): 690-695.(in Chinese)
[11] GBT 26957—2011金属材料焊缝破坏性试验:十字接头和搭接接头拉伸试验方法[S].
China Standard Press GBT 26957—2011 Destructive tests on welds in metallic materials: tensile test on cruciform and lapped joints[S].(in Chinese)
[12] 周浩森, 石忠贤, 王敏.正面角焊缝断裂方向的研究[J]. 压力容器,1988, 5(2): 42-47.
Zhou Haosen, Shi Zhongxian, Wang Min. Research on fracture direction of end fillet welds[J]. Pressure Vessel Technology, 1988, 5(2): 42-47.(in Chinese)
[13] AISC 360—05. Specification for structural steel buildings[S].

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备注/Memo

备注/Memo:
Received:2016-04-30;Accepted:2016-07-07
Foundation:National Natural Science Foundation of China(51108265)
Corresponding author:Associate professor Zhu Meichun.E-mail: meichunzhu@163.com
Citation:Zhu Meichun,Cheng Liang,Li Quoqiang,et al.Experiment on strength of transverse fillet weld connections after high temperature treatment[J]. Journal of Shenzhen University Science and Engineering, 2016, 33(6): 620-626.(in Chinese)
基金项目:国家自然科学基金资助项目(51108265)
作者简介:朱美春(1979—),女,上海师范大学副教授、博士.研究方向:钢结构抗火.E-mail:meichunzhu@163.com
引文:朱美春,程亮,李国强,等.正面角焊缝连接高温后的强度试验[J]. 深圳大学学报理工版,2016,33(6):620-626.
更新日期/Last Update: 2016-10-31