«上一篇/Previous Article|本期目录/Table of Contents|下一篇/Next Article»

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

42卷

期数:

2025年01期

页码:

1-13

栏目:

建筑结构

出版日期:

2025-01-20

文章信息/Info

Title:

Numerical investigation of fire resistance of concrete-filled steel tubular column-composite beam joints after cyclic loading

文章编号:

1673-2049(2025)01-0001-13

作者:

王文达^1,2,李生强¹,毛文婧^1,2,郑 龙¹

(1. 兰州理工大学 土木工程学院,甘肃 兰州 730050; 2. 上海市建筑科学研究院有限公司 上海市工程结构安全重点实验室,上海 200032)

Author(s):

WANG Wenda^1,2, LI Shengqiang¹, MAO Wenjing^1,2, ZHENG Long¹

(1. School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu, China; 2. Shanghai Key Laboratory of Engineering Structure Safety, SRIBS, Shanghai 200032, China)

关键词:

钢管混凝土柱-组合梁节点;  低周往复加载;  损伤程度;  耐火极限

Keywords:

concrete-filled steel tubular column-composite beam joint;  low cyclic loading;  damage degree;  fire resistance limit

分类号:

TU391

DOI:

10.19815/j.jace.2023.01081

文献标志码:

A

摘要:

为研究钢管混凝土柱-组合梁节点在往复荷载作用后的耐火性能,利用有限元软件ABAQUS建立了该节点的有限元分析模型,并与已有试验结果进行对比验证。在此基础上,分析了往复荷载作用后塑性损伤和残余变形对组合梁节点火灾下的应力和变形的影响,以及不同损伤程度、荷载作用水平和防火保护层厚度对节点耐火极限和破坏模态的影响。结果表明:地震预损伤对节点的耐火极限有不利影响,且随损伤程度的增加,耐火极限下降明显; 重度损伤下节点的耐火极限与无损伤节点相比降低了23.5%; 重度损伤的节点在火灾作用下形成塑性铰,且产生较大的耗能损伤,轻度和中度损伤下未形成明显塑性铰,耐火极限分别仅下降1.0%和3.6%; 对于以梁损伤作为预损伤模式的节点,梁荷载比和防火保护层厚度是影响有地震预损伤节点耐火极限的主要因素; 随柱荷载比的增大,耐火极限呈降低趋势,但整体影响不大。

Abstract:

To study the fire resistance of concrete-filled steel tubular(CFST)column-composite beam joint after cyclic loading, the finite element model of the joint was developed using ABAQUS software and verified with existing experimental results. On this basis, the influence of plastic damage and residual deformation on the stress and deformation of composite beam joints under fire after cyclic loading was analyzed, and the influence of different damage degree, load level and fire protection layer thickness on the fire resistance limit and failure mode of joints was analyzed. The results show that the seismic pre-damage has an adverse effect on the fire resistance of the joints. The fire resistance has a significant decrease with the increase of the pre-damage degree. The fire resistance limit of the joint with severe damage is reduced by 23.5% compared with the joint without damage. The joints with severe damage form plastic hinges under fire and produce large energy dissipation damage. No obvious plastic hinges are formed under mild and moderate damage, and the fire resistance limit is only reduced by 1.0% and 3.6%, respectively. For joints considering beam damage as the primary pre-damage mode, the beam load ratio and the fire protection layer thickness are the key factors that affect the fire resistance of joints. With the increase of the column load ratio, the fire resistance limit decreases, but the overall effect is not significant.

参考文献/References:

[1] LAZAROV L, CVETKOVSKA M, TODOROV K. Fire resistance of RC frame in case of post earthquake fire[J]. Journal of Structural Fire Engineering, 2013, 4(2): 87-94.
[2]BEHNAM B,RONAGH H R. Post-earthquake fire performance-based behavior of unprotected moment resisting 2D steel frames[J]. KSCE Journal of Civil Engineering, 2015, 19(1):274-284.
[3]SONG Q Y,HEIDARPOUR A,ZHAO X L, et al. Post-earthquake fire performance of flange-welded/web-bolted steel I-beam to hollow column tubular connections[J]. Thin-walled Structures, 2017, 116: 113-123.
[4]PUCINOTTI R, BURSI O S, DEMONCEAU J F. Post-earthquake fire and seismic performance of welded steel-concrete composite beam-to-column joints[J]. Journal of Constructional Steel Research, 2011, 67(9): 1358-1375.
[5]王文达,陈润亭.方钢管混凝土柱-外环板式组合梁节点在地震损伤后的耐火性能分析[J].工程力学,2021,38(3):73-85.
WANG Wenda, CHEN Runting. Analysis on the fire resistance of square concrete-filled steel tubular column to composite beam with outer ring plate connections after earthquake damage[J]. Engineering Mechanics, 2021, 38(3): 73-85.
[6]魏国强,王文达,毛文婧.震损后方钢管混凝土柱耐火性能试验研究[J].建筑结构学报,2022,43(12):123-134.
WEI Guoqiang, WANG Wenda, MAO Wenjing. Experimental study on fire resistance of seismic damaged concrete-filled square steel tubular columns[J]. Journal of Building Structures, 2022, 43(12): 123-134.
[7]WANG Y H, TANG Q, SU M N, et al.Post-earthquake fire performance of square concrete-filled steel tube columns[J]. Thin-walled Structures, 2020, 154: 106873.
[8]李 强,王文达,毛文婧.震损后圆钢管混凝土柱耐火性能有限元分析[J].建筑结构学报,2017,38(增1):118-125.
LI Qiang,WANG Wenda, MAO Wenjing. Finite element analysis of fire resistance of concrete-filled circular steel tubular columns after earthquake damage[J]. Journal of Building Structures, 2017, 38(S1): 118-125.
[9]TALEBI E, KORZEN M, HOTHAN S. The performance of concrete filled steel tube columns under post-earthquake fires[J]. Journal of Constructional Steel Research, 2018, 150: 115-128.
[10]钢管混凝土结构技术规范:GB 50936—2014[S].北京:中国建筑工业出版社,2014.
Technical code for concrete filled steel tubular structures: GB 50936—2014[S]. Beijing: China Architecture & Building Press, 2014.
[11]钢结构设计标准:GB 50017—2017[S].北京:中国建筑工业出版社,2017.
Standard for design of steel structures: GB 50017—2017[S]. Beijing: China Architecture & Building Press, 2017.
[12]PARK Y J, ANG A H S. Mechanistic seismic damage model for reinforced concrete[J]. Journal of Structural Engineering, 1985, 111(4): 722-739.
[13]吴 轶,黄照棉,LEE V W,等.基于刚度退化和滞回耗能的圆钢管混凝土柱损伤模型[J].地震工程与工程振动,2014,34(5):172-179.
WU Yi, HUANG Zhaomian, LEE V W, et al. Stiffness degradation and hysteretic energy dissipation based damage model of concrete-filled circular steel tube columns[J]. Earthquake Engineering and Engineering Dynamics, 2014, 34(5): 172-179.
[14]建筑抗震试验规程:JGJ/T 101—2015[S].北京:中国建筑工业出版社,2015.
Specification for seismic test of buildings: JGJ/T 101—2015[S]. Beijing: China Architecture & Building Press, 2015.
[15]Fire resistance test-element of building construction:ISO-834[S]. Geneva: International Standards Organization, 1999.
[16]钱炜武,李 威,韩林海,等.带楼板钢管混凝土叠合柱-钢梁节点抗震性能数值分析[J].工程力学,2016,33(增1):95-100.
QIAN Weiwu, LI Wei, HAN Linhai, et al. Numerical analysis of seismic behavior of concrete-filled steel tubular composite column-steel beam joints with floor[J]. Engineering Mechanics, 2016, 33(S1): 95-100.
[17]Guidelines for cyclic seismic testing of components of steel structures: ATC-24[S]. Redwood: Applied Technology Council, 1992.
[18]李 威.圆钢管混凝土柱-钢梁外环板式框架节点抗震性能研究[D].北京:清华大学,2011.
LI Wei. Study on the seismic performance of circular concrete-filled steel tubular column to steel beam joint with external diaphragm[D]. Beijing: Tsinghua University, 2011.
[19]HAN L H, YAO G H, TAO Z. Performance of concrete-filled thin-walled steel tubes under pure torsion[J]. Thin-walled Structures, 2007, 45(1): 24-36.
[20]混凝土结构设计规范:GB 50010—2010[S].北京:中国建筑工业出版社,2010.
Code for design of concrete structures: GB 50010—2010[S]. Beijing: China Architecture & Building Press, 2010.
[21]沈聚敏,王传志,江见鲸.钢筋混凝土有限元与板壳极限分析[M].北京:清华大学出版社,1993.
SHEN Jumin, WANG Chuanzhi, JIANG Jianjing. Finite element analysis of reinforced concrete and limit analysis of plate and shell[M]. Beijing: Tsinghua University Press, 1993.
[22]Eurocode 1: actions on structures-part1.2: general actions-actions on structures exposed to fire:EN 1991-1-2[S]. Brussels: CEN, 2009.
[23]LIE T T. Fire resistance of circular steel columns filled with bar-reinforced concrete[J]. Journal of Structural Engineering, 1994, 120(5): 1489-1509.
[24]韩林海.钢管混凝土结构:理论与实践[M].3版.北京:科学出版社,2016.
HAN Linhai. Concrete filled steel tubular structures:theory and practice[M]. 3rd ed. Beijing: Science Press,2016.
[25]YANG Y F, FU F. Fire resistance of steel beam to square CFST column composite joints using RC slabs:experiments and numerical studies[J]. Fire Safety Journal, 2019, 104: 90-108.
[26]WANG J H, KUNNATH S, HE J, et al. Post-earthquake fire resistance of circular concrete-filled steel tubular columns[J]. Journal of Structural Engineering, 2020, 146(6): 04020105.
[27]曲 慧,王文达.钢管混凝土柱-梁连接节点弯矩-转角关系计算方法[J].工程力学,2010,27(5):106-114,146.
QU Hui, WANG Wenda. Calculations for moment versus rotation relationship of the joint of beam and concrete-filled steel tubular column[J]. Engineering Mechanics, 2010, 27(5): 106-114, 146.

相似文献/References:

备注/Memo

备注/Memo:

收稿日期:2023-01-03 投稿网址:http://jace.chd.edu.cn
基金项目:甘肃省基础研究创新群体项目(24JRRA169); 上海市工程结构安全重点实验室开放课题(2023-KF05)
作者简介:王文达(1976-),男,工学博士,教授,博士生导师,E-mail:wangwd@lut.edu.cn。
Author resume: WANG Wenda(1976-), male, PhD, professor, E-mail: wangwd@lut.edu.cn.

常用功能

更新日期/Last Update: 2025-01-20