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...
-  2017 

全轻混凝土与钢筋粘结破坏的能量分析 Energy analysis of bond failure between all light weight concrete and steel bars

Keywords: 全轻混凝土,月牙肋钢筋,粘结破坏,拉拔力-位移曲线,总能耗-位移曲线

Full-Text   Cite this paper   Add to My Lib

Abstract:

为了探讨钢筋与全轻混凝土之间的粘结破坏机理,通过全轻混凝土与光圆钢筋和月牙肋钢筋进行的拉拔试验发现,粘结破坏只有劈裂破坏和拔出破坏2种形式;但光圆钢筋只发生拔出破坏,而且月牙肋钢筋对粘结破坏的耗能贡献率远大于光圆钢筋.其次,全轻混凝土与钢筋粘结的能量机制与普通混凝土基本一致,并以能量耗散和能量释放2种类型为主;但前者的总能耗-位移(W-S)曲线突变较为平缓,且突变点也较提前.而根据发生劈裂破坏且钢筋直径d为16、20mm时的试件,较发生拔出破坏且d为12mm时的试件,其总能耗仅为后者的19.7%和30%的结论,进一步表明当钢筋混凝土结构采用能量设计原则较传统的强度设计原则时,更加合理且更易保证结构的延性,从而有利于提高结构的抗震性能

References

[1]  杨健辉,张庆兵,余建雨,等.半轻混凝土的物理力学性能变化规律试验研究[J].混凝土,2016,(6):1-5.Yang Jianhui,Zhang Qingbing,Yu Jianyu,et al.Experimental study on change rules of physical and mechanical performances for semi-lightweight concrete[J].Concrete,2016,(6):1-5.
[2]  牛建刚,郝吉,孙立斌,等.塑钢纤维轻骨料混凝土与钢筋粘结锚固试验研究[J].工程力学,2017,34(2):42-49.Niu Jiangang,Hao Ji,Sun Libin,et al.Research on bond-anchorage behavior between deformed bars and HPP fiber reinforced lightweight aggregate concrete[J].Engineering Mechanics,2017,34(2):42-49.
[3]  余同希,卢国兴.材料与结构的能量吸收[M].北京:化学工业出版社,2006:44-49.Yu Tongxi,Lu Guoxing.Energy Absorption of Materials and Structures[M].Beijing:Chemical Industry Press,2006:44-49.
[4]  杨健辉,徐璐,樊晓,等.石轻页岩陶粒混凝土的强度试验研究[J].混凝土,2015,(3):83-86.Yang Jianhui,Xu Lu,Fan Xiao,et al.Strength tests of shale ceramsite concrete with part gravel coarse aggregates[J].Concrete,2015,(3):83-86.
[5]  骆英,于长煦,顾爱军.应用声发射技术的钢筋与混凝土粘结滑移特性研究[J].实验力学,2011,26(4):343-349.Luo Ying,Yu Changxi,Gu Aijun.Study on bond slip behavior between steel bars and concrete by acoustic emission technique[J].Journal of Experimental Mechanics,2011,26(4):343-349.
[6]  史波,赵国藩.锈蚀钢筋混凝土构件粘结性能的研究进展[J].建筑材料学报,2005,8(6):653-659.Shi Bo,Zhao Guofan.Advance in bond behavior of concrete elements with corroded rebar[J].Journal of Building Materials,2005,8(6):653-659.
[7]  Xie Heping,Li Liyun,Ju Yang.Energy analysis for damage and actastrophic failure of rocks[J].Technological Sciences,2011,54(1):199-209.
[8]  Michael I,Kaffetzakis,Catherine G,et al.Bond behavior of reinforcement in lightweight aggregate selfcompacting concrete[J].Construction and Building Materials,2016,113:641-652.
[9]  于长熙.钢筋与混凝土的粘结滑移特性试验及声发射特征研究[D].镇江:江苏大学,2011:35-46.Yu Changxi.Experimental study on bond-slip characteristics and acoustic emission characteristics of steel bars and concrete[D].Zhenjiang:Jiangsu University,2011:35-46.
[10]  陆春阳,王卫玉,李丕宁.陶粒混凝土与变形钢筋粘结锚固性能的试验研究[J].广西大学学报(自然科学版),2007,32(1):6-9.Lu Chunyang,Wang Weiyu,Li Peining.Experiment research on bond behavior between deformed bar and lightweight concrete[J].Journal of Guangxi University(Nat.Sci.Ed.),2007,32(1):6-9.
[11]  杜峰,肖建庄,高向玲.钢筋与混凝土间粘结试验方法研究[J].结构工程师,2006,22(2):94-97.Du Feng,Xiao Jianzhuang,Gao Xiangling.An overview of test methods on the bond behavior between concrete and steel-bars[J].Structural Engineers,2006,22(2):94-97.
[12]  徐有邻,邵卓民,沈文都.钢筋与混凝土的粘结锚固强度[J].建筑科学,1988,4(2):8-14.Xu Youlin,Shao Zhuomin,Shen Wendu.Bond strength between reinforcing bars and concrete[J].Building Science,1988,4(2):8-14.
[13]  谢和平,鞠杨,黎立云,等.岩体变形破坏过程的能量机制[J].岩石力学与工程学报,2008,27(9):1729-1740.Xie Heping,Ju Yang,Li Liyun,et al.Energy mechanism of deformation and failure of rock masses[J].Chinese Journal of Rock Mechanics and Engineering,2008,27(9):1729-1740.
[14]  朱兆祥.材料本构关系理论讲义[M].北京:科学出版社,2014:55-65.Zhu Zhaoxiang.Material Constitutive Relation Theory[M].Beijing:Science Press,2014:55-65.
[15]  天津港湾工程研究所,南京水利科学研究院.JTJ270-1998水运工程混凝土试验规程[S].北京:人民交通出版社,1999:155-159.Tianjin Port Engineering Institute,Nanjing Hydraulic Research Institute.JTJ270-1998 Code for Concrete Test of Water Transport Works[S].Beijing:China Communications Press,1999:155-159.
[16]  中国建筑科学研究院.GB50010-2012混凝土结构设计规范[S].北京:中国建筑工业出版社,2011:77-79.China Academy of Building Research.GB50010-2012Code for Design of Concrete Structures[S].Beijing:China Architecture&Building Press,2011:77-79.
[17]  Kim Hung Mo,JohnsonAlengaram U,Mohd Zamin Jumaat.Bond properties of lightweight concrete-A review[J].Construction and Building Materials,2016,112:478-496.
[18]  王博,白国良.钢筋与再生混凝土黏结破坏过程的能量机制研究[J].混凝土,2011,(2):32-35.Wang Bo,Bai Guoliang.Energy mechanism of the bonding failure process between the rebars and the recycled concrete[J].Concrete,2011,(2):32-35.
[19]  中国建筑科学研究院.JGJ5l-2002轻集料混凝土技术规程[S].北京:中国建筑工业出版社,2002:2-24.China Academy of Building Research.JGJ5l-2002Technical Specification for Lightweight Aggregate Concrete[S].Beijing:China Architecture&Building Press,2002:2-24.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133