双圆夹层钢管混凝土的组合弹性模量理论
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摘要
采用厚壁圆筒空间轴对称弹性力学方法,考虑钢管与混凝土受力后的变形协调关系,建立夹层钢管混凝土的组合弹性模量计算模型;然后,计算分析和讨论含钢率、混凝土强度等级、泊松比等对夹层钢管混凝土组合模量的影响,并得到夹层钢管混凝土等组合模量曲线.研究结果表明:夹层钢管混凝土组合模量随着总含钢率的增加不断增大,当总含钢率不变时,与内外含钢率无关;随着钢管和混凝土的泊松比、混凝土强度等级以及混凝土和钢管弹性模量的增大,组合模量不断增大;夹层钢管混凝土与普通钢管混凝土对混凝土的紧箍效应基本相同.
Adopting the spatial axisymmetric elastic mechanics method of thick-walled cylinder,and considering the deformation coordination relationship between steel tube and concrete,the calculation model of composite elastic modulus of concrete filled double skin tubes is established.The influences of steel ratio,concrete strength grade and Poisson′s ratio on the composite elastic modulus of concrete filled double skin tubes are discussed.The equal composite modulus curve of the concrete filled double skin tubes is obtained.It′s shown that the composite modulus of concrete filled double skin tubes increases with the increase of the total steel ratio.When the total steel ratio is constant,the composite modulus of concrete filled double skin tubes is independent of the inside and outside steel ratio.The composite modulus increases with the increase of the Poisson′s ratio and the elastic modulus of the steel pipe and concrete,the concrete strength grade.The confinement effect of the concrete filled double skin tubes is similar to the effect of the ordinary concrete-filled steel tube.
Adopting the spatial axisymmetric elastic mechanics method of thick-walled cylinder,and considering the deformation coordination relationship between steel tube and concrete,the calculation model of composite elastic modulus of concrete filled double skin tubes is established.The influences of steel ratio,concrete strength grade and Poisson′s ratio on the composite elastic modulus of concrete filled double skin tubes are discussed.The equal composite modulus curve of the concrete filled double skin tubes is obtained.It′s shown that the composite modulus of concrete filled double skin tubes increases with the increase of the total steel ratio.When the total steel ratio is constant,the composite modulus of concrete filled double skin tubes is independent of the inside and outside steel ratio.The composite modulus increases with the increase of the Poisson′s ratio and the elastic modulus of the steel pipe and concrete,the concrete strength grade.The confinement effect of the concrete filled double skin tubes is similar to the effect of the ordinary concrete-filled steel tube.
引文
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[26]康希良,赵鸿铁,薛建阳,等.钢管混凝土套箍机理及组合弹性模量的理论分析[J].工程力学,2007,24(11):121-125.DOI:10.3969/j.issn.1000-4750.2007.11.021.
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[28]康希良,赵鸿铁,薛建阳,等.钢管混凝土套箍机理及组合弹性模量的理论分析[J].工程力学,2007,24(11):121-125.DOI:10.3969/j.issn.1000-4750.2007.11.021.
[2]赵强.方钢管再生混凝土界面粘结性能试验[J].华侨大学学报(自然科学版),2016,37(1):115-119.DOI:10.11830/ISSN.1000-5013.2016.01.0115.
[3]梁扬滨,曾志兴,苏江林,等.钢板笼约束混凝土短柱轴压承载力分析[J].华侨大学学报(自然科学版),2014,35(5):576-580.DOI:10.11830/ISSN.1000-5013.2014.05.0576.
[4]关萍,陈兰响,刘晴晴.钢骨-钢管高强混凝土偏心受压柱非线性分析[J].华侨大学学报(自然科学版),2015,36(3):332-337.DOI:10.11830/ISSN.1000-5013.2015.03.0332.
[5]丁楠,罗漪,欧婷茹,等.火灾后外包薄壁钢管加固钢筋混凝土轴压柱力学性能的数值模拟[J].华侨大学学报(自然科学版),2017,38(2):158-163.DOI:10.11830/ISSN.1000-5013.201702005.
[6] HU H,HUANG C,WU M,et al.Nonlinear analysis of axially loaded concrete-filled tube columns with confinement effect[J].Journal of Structural Engineering,2003(10):1322-1329.DOI:10.1061/(ASCE)0733-9445(2003)129:10(1322).
[7] SAKINO K,NAKAHARA H,MORINO S,et al.Behavior of centrally loaded concrete-filled steel-tube short columns[J].Journal of Structural Engineering,2004,130(2):180-188.DOI:10.1061/(ASCE)0733-9445(2004)130:2(180).
[8] FAM A,QIE F S,RIZKALLA S.Concrete-filled steel tubes subjected to axial compression and lateral cyclic loads[J].Journal of Structural Engineering,2004,130(4):631-640.DOI:10.1061/(ASCE)0733-9445(2004)130:4(631).
[9]黄宏.中空夹层钢管混凝土压弯构件的力学性能研究[D].福州:福州大学,2006.
[10]聂建国,秦凯,张桂标.方钢管混凝土柱内隔板式节点的抗弯承载力研究[J].建筑科学与工程学报,2005,22(1):42-49.DOI:10.3321/j.issn:1673-2049.2005.01.006.
[11]韩林海.钢管高强混凝土压弯构件力学性能研究[J].哈尔滨建筑大学学报,1997,30(5):24-30.
[12] WEI S,MAU S T,VIPULANANDAN C,et al.Performance of new sandwich tube under axial loading:Experiment[J].Journal of Structural Engineering,1995,121(12):1806-1814.DOI:10.1061/(ASCE)0733-9445(1995)121:12(1806).
[13] WEI S,MAU S T,VIPULANANDAN C,et al.Performance of new sandwich tube under axial loading:Analysis[J].Journal of Structural Engineering,1995,121(12):1815-1821.DOI:10.1061/(ASCE)0733-9445(1995)121:12(1815).
[14]黄宏.方中空夹层钢管砼轴压力学性能的理论分析[J].华东交通大学学报,2003,20(2):19-21.DOI:10.3969/j.issn.1005-0523.2003.02.006.
[15]张恒铭,李峰,潘大荣.基于三维梁理论的复合材料层合管等效抗弯刚度[J].复合材料学报,2016,33(8):1694-1701.DOI:10.13801/j.cnki.fhclxb.20151029.001.
[16]王怀忠.轴向压力作用下空心钢管混凝土桩体空间轴对称问题解析解[J].岩土工程学报,2013,35(增刊2):763-767.
[17]梁亚平,王惠珍,任兴民.两端均布、轴向线性分布压力作用下厚壁圆筒空间轴对称问题的解析解[J].中国科学(G辑:物理学力学天文学),2007,37(5):684-688.DOI:10.3969/j.issn.1674-7275.2007.05.014.
[18]徐芝纶.弹性力学简明教程[M].北京:高等教育出版社,2002:63-64.
[19]中华人民共和国住房和城乡建设部,中华人民共和国国家质量监督检验检疫总局.混凝土结构设计规范:GB50010-2010[S].北京:中国建筑工业出版社,2010.
[20]黄宏,陶忠,韩林海.圆中空夹层钢管混凝土柱轴压工作机理研究[J].工业建筑,2006,36(11):11-14.DOI:10.3321/j.issn:1000-8993.2006.11.003.
[21]黄宏,朱彦奇,郭晓宇,等.不同材料内管的圆中空夹层钢管混凝土构件轴压性能研究[J].建筑钢结构进展,2018,20(1):64-72.DOI:10.13969/j.cnki.cn31-1893.2018.01.008.
[22]黄宏,郭晓宇,陈梦成,等.圆钢管混凝土轴压短柱对比试验研究[J].广西大学学报(自然科学版),2015,40(4):806-814.DOI:10.13624/j.cnki.issn.1001-7445.2015.0806.
[23]苏昊天,韩风霞,郭立伟,等.基于空心率变化的圆中空夹层钢管自密实混凝土短柱轴压试验研究[J].混凝土,2018(2):13-15.DOI:10.3969/j.issn.1002-3550.2018.02.004.
[24]钟善桐.钢管混凝土刚度的分析[J].哈尔滨建筑大学学报,1999,32(3):13-18.
[25]康希良,赵鸿铁,薛建阳,等.钢管混凝土柱组合轴压刚度的理论分析[J].工程力学,2007,24(1):101-105.DOI:10.3969/j.issn.1000-4750.2007.01.017.
[26]康希良,赵鸿铁,薛建阳,等.钢管混凝土套箍机理及组合弹性模量的理论分析[J].工程力学,2007,24(11):121-125.DOI:10.3969/j.issn.1000-4750.2007.11.021.
[27]陈梦成,李骐.钢管混凝土柱组合弹性模量及轴向压力分配弹性力学分析[J].华东交通大学学报,2016,33(4):24-30.DOI:10.3969/j.issn.1005-0523.2016.04.004.
[28]康希良,赵鸿铁,薛建阳,等.钢管混凝土套箍机理及组合弹性模量的理论分析[J].工程力学,2007,24(11):121-125.DOI:10.3969/j.issn.1000-4750.2007.11.021.