«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:

39卷

期数:

2022年02期

页码:

19-29

栏目:

防灾减灾工程

出版日期:

2022-03-30

文章信息/Info

Title:

Study on Fire Resistance of Axially Compressed Partially-encased Composite Steel and Concrete Columns with Different Strengthening Measures

文章编号:

1673-2049(2022)02-0019-11

作者:

胡 晨¹,张慧洁¹,王静峰^2,3,孙 彤²,刘 用^2,3

(1. 国网安徽省电力有限公司经济技术研究院,安徽 合肥 230009; 2. 合肥工业大学 土木与水利工程学院,安徽 合肥 230009; 3. 合肥工业大学 先进钢结构技术与产业化安徽省协同创新中心,安徽 合肥 230009)

Author(s):

HU Chen¹, ZHANG Hui-jie¹, WANG Jing-feng^2,3, SUN Tong², LIU Yong^2,3

(1. Research Institute of Economics and Technology of State Grid Anhui Electric Power Co., Ltd., Hefei 230009, Anhui, China; 2. School of Civil and Engineering, Hefei University of Technology, Hefei 230009, Anhui, China; 3. Advanced Steel Structure Technology and Industrialization Collaborative Innovation Center of Anhui, Hefei University of Technology, Hefei 230009, Anhui, China)

关键词:

PEC柱;  抗火性能;  轴压;  加强措施;  耐火极限

Keywords:

PEC column;  fire resistance performance;  axial compression;  strengthening measure;  fire resistance limit

分类号:

TU398

DOI:

10.19815/j.jace.2021.08082

文献标志码:

A

摘要:

由于型钢翼缘外露,部分包覆钢-混凝土组合(PEC)柱耐火极限很难满足设计需求。为探究PEC柱抗火性能加强方法,得到经济合理的加强措施,通过ABAQUS有限元分析软件建立了轴压作用下PEC柱的温度场及热力学性能有限元分析模型,并用已有试验数据验证模型可靠性,探讨了PEC柱在高温下的温度变化、受力机理和破坏模式。对不同加强措施下轴压PEC柱抗火性能进行了参数分析,研究了荷载比、纵筋配筋率、翼缘面积比、截面尺寸、长细比和防火涂料厚度等参数对PEC柱耐火极限的影响规律。结果表明:PEC柱耐火极限随荷载比、长细比、翼缘面积比的降低而明显提高,随着防火涂料厚度与截面尺寸的增加而明显提高; 在参数分析的基础上,回归得到考虑防火涂料厚度影响的PEC柱耐火极限简化计算公式,研究结果将为PEC构件抗火设计提供科学依据。

Abstract:

Due to the exposed steel flanges, the fire resistance limit of partially-encased composite steel and concrete(PEC)columns is difficult to meet the design requirements. In order to explore the strengthening method of the fire resistance performance of PEC columns and obtain the economic and reasonable strengthening measures, the ABAQUS was used to establish the temperature field and the thermodynamic finite element models of PEC columns under axial compression. The reliability of the model was verified using the existing test data, and the temperature field, stress mechanism and failure mode of PEC column in fire were investigated. The parameter analysis was carried out to study the influence of parameters such as load ratio, longitudinal reinforcement ratio, flange area ratio, section size, slenderness ratio and fireproof coating thickness on the fire resistance limit of PEC columns. The results show that the fire resistance limit of PEC columns will improve with the decrease of the load ratio, slenderness ratio and flange area ratio and the increase of the fireproof coating thickness and section size. A simplified equation is regressed based on the parametric analyses to predict the fire resistance limit of PEC column considering the influence of fire proof coating thickness. The research results will provide a scientific basis for the fire resistance design of the PEC components.

参考文献/References:

[1] 李鹏宇.H型钢部分外包混凝土组合短柱抗震性能的试验研究[D].包头:内蒙古科技大学,2009.
LI Peng-yu.Experimental Study on Seismic Behavior of H-beam Partially Clad Concrete Composite Short Columns[D].Baotou:Inner Mongolia University of Science and Technology,2009.
[2]赵根田,周易晖.部分包裹混凝土柱抗震性能分析[J].山西农经,2017(4):127-128.
ZHAO Gen-tian,ZHOU Yi-hui.Analysis of Seismic Performance of Partially Wrapped Concrete Columns[J].Shanxi Agricultural Economy,2017(4):127-128.
[3]林德慧,陈以一.部分填充钢-混凝土组合柱整体稳定分析[J].工程力学,2019,36(增1):71-77,85.
LIN De-hui,CHEN Yi-yi.Overall Stability Analysis of Partially Encased Composite Columns[J].Engineering Mechanics,2019,36(S1):71-77,85.
[4]WAINMAN D E,TOMLINSON L N.BS476:Part 21 Fire Resistance Tests Summary of Data Obtained During Tests on Web Encased Columns[R].Rotherham:Swinden Laboratories,1994.
[5]MOURA CORREIA A J P,RODRIGUES J P C.Fire Resistance of Partially Encased Steel Columns with Restrained Thermal Elongation[J].Journal of Constructional Steel Research,2011,67(4):593-601.
[6]毛小勇,徐悦军,行盼娟.标准升温条件下PEC柱耐火极限理论分析及简化计算[J].防灾减灾工程学报,2012,32(1):45-49.
MAO Xiao-yong,XU Yue-jun,XING Pan-juan.Theoretic Model and Simplified Calculation Method of Fire Resistance of Partially Encaed Concrete(PEC)Columns[J].Journal of Disaster Prevention and Mitigation Engineering,2012,32(1):45-49.
[7]徐悦军,毛小勇.标准升温下PEC柱的耐火极限分析[J].苏州科技学院学报(工程技术版),2011,24(2):24-27.
XU Yue-jun,MAO Xiao-yong.An Analysis on Fire Resistance Limit of PEC Columns Under Standard Warming Conditions[J].Journal of Suzhou University of Science and Technology(Engineering and Technology),2011,24(2):24-27.
[8]毛小勇,满建政,金晓飞.约束PEC柱轴力变化规律及影响因素[J].消防科学与技术,2012,31(5):443-446.
MAO Xiao-yong,MAN Jian-zheng,JIN Xiao-fei.Variation of Axial Force and Analysis of Related Factors in Restrained PEC Columns Subjected to Standard Fire[J].Fire Science and Technology,2012,31(5):443-446.
[9]满建政,毛小勇.标准升温下轴向约束PEC柱耐火极限及影响因素分析[J].苏州科技学院学报(工程技术版),2012,25(2):42-45.
MAN Jian-zheng,MAO Xiao-yong.Fire Resistance Limit and Its Influence Factors of Axial Restrained PEC Columns Subjected to Standard Fire[J].Journal of Suzhou University of Science and Technology(Engineering and Technology),2012,25(2):42-45.
[10]金晓飞,毛小勇.弯矩分布模式对约束PEC柱抗火性能的影响[J].苏州科技学院学报(工程技术版),2012,25(3):23-27.
JIN Xiao-fei,MAO Xiao-yong.Influence of Bending Moment Distribution Mode on Fire Behavior of Restrained PEC Columns[J].Journal of Suzhou University of Science and Technology(Engineering and Technology),2012,25(3):23-27.
[11]LIE T T.Fire Resistance of Circular Steel Columns Filled with Bar-reinforced Concrete[J].Journal of Structural Engineering,1994,120(5):1489-1509.
[12]刘 用.采用角钢连接件的U形钢-混凝土组合梁抗弯与抗火性能[D].哈尔滨:哈尔滨工业大学,2020.
LIU Yong.Flexural Behaviour and Fire Resistance of Composite Beams with Ushaped Steel Girder and Angle Connectors[D].Harbin:Harbin Institute of Technology,2020.
[13]李国强,韩林海,楼国彪.钢结构及钢-混凝土组合结构抗火设计[M].北京:中国建筑工业出版社,2006.
LI Guo-qiang,HAN Lin-hai,LOU Guo-biao.Fire Resistance Design of Steel Structure and Steel-concrete Composite Structure[M].Beijing:China Architecture & Building Press,2006.
[14]LIE T T,LRWIN R J.Fire Resistance of Rectangular Steel Columns Filled with Bar-reinforced Concrete[J].Journal of Structural Engineering,1995,121(5):797-805.
[15]Eurocode 3:Design of Steel Structures-Part 1-2:General Rules Structures Fire Design:EN 1993-1-2:2005[S].London:British Standards Institution,2005.
[16]金晓飞.约束PEC柱绕强轴的抗火性能研究[D].苏州:苏州科技学院,2012.
JIN Xiao-fei.Analysis of Restrained PEC Columns Around Strong Axis on Fire-resistant Performance[D].Suzhou:Suzhou University of Science and Technology,2012.
[17]徐腾飞,戈孝聪.高温下PEC柱与普通H型钢柱翼缘屈曲性能比较[J].江苏建筑,2017(3):32-35.
XU Teng-fei,GE Xiao-cong.Comparison of Flange Buckling Behavior Between PEC Column and Normal H-shape Steel Column Under High Temperature[J].Jiangsu Construction,2017(3):32-35.
[18]吴耀鹏,张 旭,李晓蕾.典型受火方式下型钢混凝土异形柱耐火极限研究[J].钢结构,2017,32(11):117-122.
WU Yao-peng,ZHANG Xu,LI Xiao-lei.Research on the Fire Endurance of SRC Special-shaped Column in Typical Fire Exposure Cases[J].Steel Construction,2017,32(11):117-122.
[19]郑蝉蝉,李引擎,王广勇.型钢混凝土约束柱耐火性能研究[J].建筑科学,2016,32(3):81-88.
ZHENG Chan-chan,LI Yin-qing,WANG Guang-yong.Fire Performance Study of Steel Reinforced Concrete Restrained Columns[J].Building Science,2016,32(3):81-88.
[20]刘 猛,张 斌,李蒙杰.H型钢混凝土柱的抗火性能数值模拟分析[J].建筑科学,2018,34(5):113-117,130.
LIU Meng,ZHANG Bin,LI Meng-jie.Numerical Simulation Analysis of Fire Resistance of H-shaped Steel Reinforced Concrete Columns[J].Building Science,2018,34(5):113-117,130.
[21]杜明淮.不同涂层厚度对火灾下简支钢梁耐火性能的影响分析[D].合肥:合肥工业大学,2013.
DU Ming-huai.The Analysis of Impact on Simply Supported Steel Beam's Fire Resistance Performance Under Fire in Different Coating Thickness[D].Hefei:Hefei University of Technology,2013.
[22]高 宇,毛小勇.火灾荷载比对约束PEC柱(绕弱轴)抗火性能影响研究[J].苏州科技学院学报(工程技术版),2016,29(3):23-27.
GAO Yu,MAO Xiao-yong.Influence of Load Ratio on the Fire Performance of Restrained PEC Columns(Around the Weak Axis)[J].Journal of Suzhou University of Science and Technology(Engineering and Technology),2016,29(3):23-27.
[23]赵根田,郝志强,朱晓娟,等.部分包裹混凝土偏心受压短柱受力性能试验研究[J].内蒙古科技大学学报,2008,27(2):178-182.
ZHAO Gen-tian,HAO Zhi-qiang,ZHU Xiao-juan,et al.Experiment Study on the Behavior of Partially Encased Concrete Short Columns Subjected to Eccentric Compression[J].Journal of Inner Mongolia University of Science and Technology,2008,27(2):178-182.
[24]李补拴,张宇鸣,赵根田,等.不同加载方式下的PEC柱(强轴)抗震性能试验研究[J].建筑钢结构进展,2021,23(8):43-52.
LI Bu-shuan,ZHANG Yu-ming,ZHAO Gen-tian,et al.An Experimental Study on the Seismic Performance of PEC Columns(Strong Axis)Under Different Loading Patterns[J].Progress in Steel Building Structures,2021,23(8):43-52.
[25]朱晋德.基于升降温全过程的PEC柱耐火性能指标研究[D].苏州:苏州科技大学,2017.
ZHU Jin-de.Research on Fire Resistance Indicators of PEC Column Based on the Whole Process of Heating and Cooling Phases[D].Suzhou:Suzhou University of Science and Technology,2017.
[26]张萌萌.型钢混凝土柱的耐火极限研究[D].哈尔滨:哈尔滨工程大学,2017.
ZHANG Meng-meng.Research on Fire Endurance of Steel Reinforced Concrete Columns[D].Harbin:Harbin Engineering University,2017.
[27]徐悦军.PEC柱抗火性能及设计方法研究[D].苏州:苏州科技学院,2011.
XU Yue-jun.Fire Performance and Design Method of Partial Encaed Concrete(PEC)Columns[D].Suzhou:Suzhou University of Science and Technology,2011.
[28]王忠铖.型钢混凝土柱耐火性能研究与优化方法[D].邯郸:河北工程大学,2015.
WANG Zhong-cheng.Fire Resistance Research of Steel Reinforced Concrete Columns and Optimization Method[D].Handan:Hebei University of Engineering,2015.

相似文献/References:

[1]计琳,赵均海,翟越,等.轴向约束对钢结构柱抗火性能的影响[J].建筑科学与工程学报,2006,23(04):64.
　JI Lin,ZHAO Jun-hai,ZHAI Yue,et al.Effect of Axial Restraint on Fire Resistance Performance of Steel Column[J].Journal of Architecture and Civil Engineering,2006,23(02):64.
[2]张玉琢,刘雨杰,吕学涛.相对两面受火的方钢管约束型钢混凝土柱抗火性能[J].建筑科学与工程学报,2020,37(03):91.[doi:10.19815/j.jace.2018.05050]
　ZHANG Yu-zhuo,LIU Yu-jie,LYU Xue-tao.Fire Resistance of Square Tubed Steel Reinforced Concrete Columns in Relative Fires[J].Journal of Architecture and Civil Engineering,2020,37(02):91.[doi:10.19815/j.jace.2018.05050]

备注/Memo

备注/Memo:

收稿日期:2021-08-17
基金项目:安徽省自然科学基金项目(2108085QE248); 中央高校基本科研业务费专项资金项目(PA2021GDSK0081,JZ2021HGQA0249)
作者简介:胡 晨(1983-),男,安徽蚌埠人,高级工程师,工学硕士,E-mail:34751101@qq.com。

常用功能

更新日期/Last Update: 2022-03-20