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[1]霍静思,杨鑫鑫,李 智.考虑初始荷载的火灾后RC柱抗震性能[J].建筑科学与工程学报,2019,36(05):21-30.
 HUO jing-si,YANG Xin-xin,LI Zhi.Seismic Performance of Post-fire RC Columns with Pre-load[J].Journal of Architecture and Civil Engineering,2019,36(05):21-30.
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
36卷
期数:
2019年05期
页码:
21-30
栏目:
出版日期:
2019-09-23

文章信息/Info

Title:
Seismic Performance of Post-fire RC Columns with Pre-load
文章编号:
1673-2049(2019)05-0021-10
作者:
霍静思1,2,杨鑫鑫1,李 智1
(1. 湖南大学 建筑安全与节能教育部重点实验室,湖南 长沙 410082; 2. 华侨大学 福建省智慧基础设施与监测重点实验室,福建 厦门 361021)
Author(s):
HUO jing-si1,2, YANG Xin-xin1, LI Zhi1
(1. Key Laboratory of Building Safety and Energy Efficiency of Ministry of Education, Hunan University, Changsha 410082, Hunan, China; 2. Fujian Provincial Key Laboratory of Intelliguent Infrastructure and Monitoring, Huaqiao University, Xiamen 361021, Fujian, China)
关键词:
钢筋混凝土柱 高温 抗震性能 初始荷载 尺寸效应 轴压比
Keywords:
RC column high temperature seismic performance pre-load size effect axial compression ratio
分类号:
TU375.3
DOI:
-
文献标志码:
A
摘要:
为研究初始荷载作用对火灾后钢筋混凝土(RC)柱抗震性能的影响,分别对3根高温后RC柱和2根常温对比试件进行滞回加载试验。比较分析了不同初始荷载作用下试件的温度场变化、滞回曲线、骨架曲线和破坏模态,重点研究了不同初始荷载与高温冷却全过程对钢筋混凝土柱的破坏模态、剩余变形、剩余承载力、抗弯刚度与延性以及耗能能力的影响。结果表明:初始荷载作用对钢筋混凝土柱高温后的抗震性能影响显著,且存在一定尺寸效应; 初始荷载作用时,随着轴压比增大,高温后试件的破坏模态由弯曲破坏变为压溃破坏; 初始荷载的作用不仅影响柱截面温度场,而且使得高温后试件产生剩余压缩变形,轴压比越大,剩余压缩变形越大,剩余承载力和抗弯刚度均呈增大趋势,而延性和耗能能力呈下降趋势; 高温冷却作用使得试件的承载力、抗弯刚度、延性以及耗能能力总体呈现不同程度的退化; 建议在对受火后钢筋混凝土柱进行损伤评估和抗震性能研究时,应合理考虑初始荷载作用和尺寸效应的影响。
Abstract:
In order to study the effects of pre-loads on the seismic performance of post-fire reinforced concrete(RC)columns, the cyclic loading tests were carried out on three RC columns after high temperature and two specimens at room temperature, respectively. By comparing and analyzing the variation of temperature field, hysteresis curve, skeleton curve and failure mode of specimens under different pre-loads, the effects of different pre-loads and high temperature cooling process on failure mode, residual deformation, residual bearing capacity, flexural stiffness and ductility, and energy dissipation capacity of reinforced concrete columns were emphatically studied. The results show that the effect of pre-load on seismic behavior of reinforced concrete columns after high temperature is significant, and there is a certain size effect. When the pre-load is applied, with the increase of the axial compression ratio, the failure modes of specimens change from bending failure to crushing failure after high temperature. The pre-load not only affects the temperature field of the column section, but also causes the residual compressive deformation of the specimen after high temperature. The larger the axial compression ratio is, the larger the residual compression deformation is, the larger the residual bearing capacity and flexural rigidity are, while the ductility and energy dissipation capacity show a downward trend. High temperature cooling makes the bearing capacity, flexural rigidity, ductility and energy dissipation capacity of the specimens degenerate to varying degrees. It is suggested that the influence of pre-load and size effect should be reasonably considered in damage assessment and seismic performance study of reinforced concrete columns after fire.

参考文献/References:

[1] 吴 波.火灾后钢筋混凝土结构的力学性能[M].北京:科学出版社,2003.
WU Bo.Mechanical Properties of Reinforced Concrete Structures After Fire[M].Beijing:Science Press,2003.
[2]张智梅,叶志明,刘 涛.钢筋混凝土结构抗火研究进展[J].自然灾害学报,2007,16(1):127-135.
ZHANG Zhi-mei,YE Zhi-ming,LIU Tao.Research Progress in Fire Resistance of Reinforced Concrete Structures[J].Journal of Natural Disasters,2007,16(1):127-135.
[3]吴 波,何喜洋.高温下钢筋混凝土框架的内力重分布研究[J].土木工程学报,2006,39(9):54-61.
WU Bo,HE Xi-yang.A Study on the Redistribution of Internal Forces in Reinforced Concrete Frames Under High Temperature[J].China Civil Engneering Journal,2006,39(9):54-61.
[4]肖建庄,谢 猛.高性能混凝土框架火灾后抗震性能试验研究[J].土木工程学报,2005,38(8):36-42.
XIAO Jian-zhuang,XIE Meng.An Expermental Study on the Seismic Behavior of HPC Frames After Fire[J].China Civil Engneering Journal,2005,38(8):36-42.
[5]LIN C H,CHEN S T,HWANG T L.Residual Strength of Reinforced Concrete Columns Exposed to Fire[J].Journal of Chinese Institute of Engineers,1989,12(5):557-566.
[6]LIN C H,TSAY C S.Deterioration of Strength and Stiffness of Reinforced Concrete Columns After Fire[J].Journal of the Chinese Institute of Engineers,1990,13(3):273-283.
[7]LIN C H,CHEN S T,YANG C A.Repair of Fire-damaged Reinforced Concrete Columns[J].ACI Structural Journal,1995,92(4):406-411.
[8]马忠诚,吴 波,欧进萍.四面受火后钢筋砼柱抗震性能研究[J].计算力学学报,1997,14(4):443-453.
MA Zhong-cheng,WU Bo,OU Jin-ping.Seismic Characteristics of R.C.Columns After Fire in All Sides[J].Chinese Journal of Computational Mechanices,1997,14(4):443-453.
[9]吴 波,马忠诚,欧进萍.火灾后钢筋混凝土结构的抗震性能研究[J].哈尔滨建筑大学学报,1996,29(1):9-16.
WU Bo,MA Zhong-cheng,OU Jin-ping.Study on the Aseismic Characteristics of RC Structures After Fire[J].Journal of Harbin University of Civil Engineering and Architecture,1996,29(1):9-16.
[10]吴 波,马忠诚,欧进萍.高温后钢筋混凝土柱抗震性能的试验研究[J].土木工程学报,1999,32(2):53-58.
WU Bo,MA Zhong-cheng,OU Jin-ping.Experimental Study on Seismic Properties of R.C.Columns After High Temperature[J].China Civil Engineering Journal,1999,32(2):53-58.
[11]NI S,BIRELY A C.Post-fire Seismic Behavior of Reinforced Concrete Structural Walls[J].Engineering Structures,2018,168:163-178.
[12]徐玉野,杨清文,吴 波,等.高温后钢筋混凝土短柱抗震性能试验研究[J].建筑结构学报,2013,34(8):12-19.
XU Yu-ye,YANG Qing-wen,WU Bo,et al.Experimental Study on Seismic Performance of Reinforced Concrete Short Columns After Fire[J].Journal of Building Structures,2013,34(8):12-19.
[13]JAU W C,HUANG K L.A Study of Reinforced Concrete Corner Columns After Fire[J].Cement and Concrete Composites,2008,30(7):622-638.
[14]CHEN Y H,CHANG Y F,YAO G C,et al.Experimental Research on Post-fire Behaviour of Reinforced Concrete Columns[J].Fire Safety Journal,2009,44(5):741-748.
[15]HUO J S,ZHANG J G,WANG Z W,et al.Effects of Sustained Axial Load and Cooling Phase on Post-fire Behaviour of Reinforced Concrete Stub Columns[J].Fire Safety Journal,2013,59:76-87.
[16]张家广,霍静思,肖 岩.高温作用后钢筋混凝土短柱轴压力学性能试验研究[J].建筑结构学报,2011,32(4):117-124.
ZHANG Jia-guang,HUO Jing-si,XIAO Yan.Experimental Study on Axial Mechanical Behavior of Reinforced Concrete Stub Columns with Pre-load After Exposure to High Temperatures[J].Journal of Building Structures,2011,32(4):117-124.
[17]陈 俊,李 帅,霍静思,等.标准火灾全过程作用后钢筋混凝土短柱力学性能试验研究[J].湘潭大学自然学科学报,2017,39(2):26-32.
CHEN Jun,LI Shuai,HUO Jing-si,et al.Experimental Study on Axial Mechanical Behavior of Reinforced Concrete Stub Columns After Exposed to the Entire Period of High Temperature[J].Natural Science Journal of Xiangtan University,2017,39(2):26-32.
[18]张家铭,陈 俊,霍静思,等.火灾升降温模式对高温后钢筋混凝土轴压力学性能影响的试验研究[J].实验力学,2017,32(1):70-78.
ZHANG Jia-ming,CHEN Jun,HUO Jing-si,et al.Experimental Study of the Effect of Fire Mode on Axial Compression Mechanical Properties of RC After Exposure to Entire Fire Process[J].Journal of Experimental Mechanics,2017,32(1):70-78.
[19]张家广.火灾(高温)全过程作用后钢筋混凝土柱力学性能试验研究[D].长沙:湖南大学,2009.
ZHANG Jia-guang.Experimental Research on Mechanical Behaviors of Reinforced Concrete Columns with Sustained Axial Load After Exposure to Fire or High Temperatures[D].Changsha:Hunan University,2009.
[20]徐玉野,李 丹,林碧兰,等.轴向约束钢筋混凝土短柱受火后抗震性能试验研究[J].建筑结构学报,2015,36(6):69-77.
XU Yu-ye,LI Dan,LIN Bi-lan,et al.Experimental Study on Seismic Performance of Axially-restrained Concrete Short Columns After Fire[J].Journal of Building Structures,2015,36(6):69-77.
[21]GB 50010—2010,混凝土结构设计规范[S].
GB 50010—2010,Code for Design of Concrete Structures[S].
[22]GB/T 50081—2002,普通混凝土力学性能试验方法标准[S].
GB/T 50081—2002,Standard for Test Method of Mechanical Properties on Ordinary Concrete[S].
[23]GB/T 228—2010,金属材料拉伸试验:室温试验方法[S].
GB/T 228—2010,Metallic Materials — Tensile Testing — Method of Test at Ambient Temerature[S].
[24]HUO J S,XIAO Y,REN X H,et al.A New Hybrid Heating Method Used in Fire Test[J].Experimental Thermal and Fluid Science,2015,62:52-57.
[25]LI Z,LIU Y Z,HUO J S,et al.Experimental Assessment of Fire-exposed RC Beam-column Connections with Varying Reinforcement Decelopment Lengths Subjected to Column Removal[J].Fire Safety Journal,2018,99:38-48.
[26]LI Z,LIU Y,HUO J,et al.Experimental and Analytical Assessment of RC Joints with Varying Reinforcement Detailing Under Push-down Loading Before and After Fires[J].Engineering Structures,2019,189:550-564.
[27]谭 炎,李 智,霍静思,等.锚固形式对火灾下边柱失效后RC梁柱节点受力机制影响试验研究[J].湘潭大学自然科学学报,2017,39(4):41-47.
TAN Yan,LI Zhi,HUO Jing-si,et al.Experimental Study on Mechanical Behaviour of RC Beam-column Connections with Different Anchorage Form Under Exterior Column Removal Induced by Fire[J].Natrural Science Journal of Xiangtan University,2017,39(4):41-47.
[28]谭 炎.高温下钢筋混凝土梁-柱边节点竖向推覆试验研究[D].长沙:湖南大学,2016.
TAN Yan.Experimental Research on Push-down Test of RC Exterior Beam-column Connection at High Temperature[D].Changsha:Hunan University,2016.
[29]荣 晃.钢筋混凝土梁柱子结构高温抗倒塌性能试验研究[D].湘潭:湘潭大学,2016.
RONG Huang.Experimental Study of Reinforced Concrete Beam-column Substructures Experienced High Temperature on Collapse Resistance Performance[D].Xiangtan:Xiangtan University,2016.
[30]JGJ/T 101—2015,建筑抗震试验规程[S].
JGJ/T 101—2015,Specification for Seismic Test of Buildings[S].
[31]VARMA A H,RICLES J M,SAUSE R,et al.Seismic Behavior and Modeling of High-strength Composite Concrete-filled Steel Tube(CFT)Beam-columns[J].Journal of Constructional Steel Research,2002,58(5-8):725-758.
[32]韩小雷,戚永乐,关柱良,等.CRB550级箍筋混凝土柱抗震性能试验研究[J].建筑结构学报,2011,32(12):235-241.
HAN Xiao-lei,QI Yong-le,GUAN Zhu-liang,et al.Comparative Experimental Research on Earthquake-resistant Behavior of Reinforced Concrete Columns with CRB500 Stirrups[J].Journal of Building Structures,2011,32(12):235-241.
[33]高 献,陶 忠,杨有福,等.大轴压比下FRP约束混凝土柱滞回性能试验研究[J].工业建筑,2005,35(9):11-14.
GAO Xian,TAO Zhong,YANG You-fu,et al.Hysteretic Behavior of Circular RC Columns Confined with FRP Jackets[J].Industrial Construction,2005,35(9):11-14.

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[7]魏巍巍,贡金鑫.钢筋混凝土柱荷载-变形计算的理论模型[J].建筑科学与工程学报,2012,29(01):38.
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[8]肖建庄,黄运标,郑永朝.高温后再生混凝土的残余抗折强度[J].建筑科学与工程学报,2009,26(03):32.
 XIAO Jian-zhuang,HUANG Yun-biao,ZHENG Yong-chao.Residual Flexural Strength of Recycled ConcreteAfter Elevated-temperatures[J].Journal of Architecture and Civil Engineering,2009,26(05):32.
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 DONG Yu-li.Calculation of Bearing Capacity of RC Concrete Slabs in Fire[J].Journal of Architecture and Civil Engineering,2009,26(05):14.
[10]周长东,吕西林,金叶,等.火灾高温下玻璃纤维筋的力学性能研究[J].建筑科学与工程学报,2006,23(01):23.
 ZHOU Chang-dong,LU Xi-lin,JIN Ye.Research on Mechanical Behavior of GFRP Bars in High Temperature[J].Journal of Architecture and Civil Engineering,2006,23(05):23.

备注/Memo

备注/Memo:
收稿日期:2018-11-07 基金项目:国家自然科学基金项目(51378200); 上海市工程结构安全重点实验室开放课题(2016-KF09) 作者简介:霍静思(1970-),男,吉林梨树人,教授,博士研究生导师,工学博士,E-mail:huojingsi@hqu.edu.cn。
更新日期/Last Update: 2019-09-29