全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

混凝土的瞬态热应变及其计算

Keywords: 高温,瞬态热应变,热膨胀系数,弹性系数

Full-Text   Cite this paper   Add to My Lib

Abstract:

为了模拟火灾中混凝土的瞬态热应变,提出2种方法:修改材料的热膨胀系数和修改材料的弹性系数.第1种方法以ABAQUS为平台,通过编制子程序修改材料的热膨胀系数.第2种方法通过理论推导,将瞬态热应变的计算转变为修改材料的弹性系数.算例结果表明2种方法均是合理的.

References

[1]  过镇海,时旭东.钢筋混凝土的高温性能及其计算[M].北京:清华大学出版社,2003.
[2]  胡海涛,董毓利.高温时高强混凝土瞬态热应变的研究[J].建筑结构学报,2002,23(4):32-35.HU Hai-tao,DONG Yu-li.Experimental research on the transient thermal strain of high strength concrete at elevated temperature[J].Journal of Building Structures,2002,23(4):32-35.(in Chinese)
[3]  LI Long-yuan,PURKISS John.Stress-strain constitutive equations of concrete material at elevated temperatures[J].Fire Safety Journal,2005,40:669-686.
[4]  THELANDERSSON S.Modeling of combined thermal and mechanical action in concrete[J].Journal of Engineering Mechanics,1987,113(6):893-906.
[5]  南建林,过镇海,时旭东.混凝土的温度-应力耦合本构关系[J].清华大学学报(自然科学版),1997,37(6):87-90 NAN Jian-lin,GUO Zhen-hai,SHI Xu-dong.Temperature stress coupling constitutive relationship of concrete[J].Journal of Tsinghua University(Sci & Tech),1997,37(6):87-90.(in Chinese)
[6]  BRATINA Sebastjan,SAJE Miran,PLANINE Igor.The effect of different strain contributions on the response of RC beams in fire[J].Engineering Structures,2007(29):418-430.
[7]  SUKWON Kang,HONG Sung-gul.Behavior of concrete members at devated temperatures considering inelastic deformation[J]. Fire Technology,2003,39:9-22.
[8]  蒋首超.钢-混凝土组合楼盖抗火性能理论与试验研究[D].上海:同济大学土木工程学院,2001.JIANG Shou-chao.Theoretical and experimental research on the fire-resistance of composite floor[D].Shanghai:School of Civil Engineering,Tongji University,2001.(in Chinese)
[9]  李国强,韩林海,楼国彪,等.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.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133