Numerical Simulation and Assessment of Self-induced Tensile Stresses in Steel Ring Restrained Concrete

武汉理工大学学报-材料科学版(英文版), 2010, 25(3): 530-533. doi: 10.1007/s11595-010-0037-8

^1, , ^2, , ^3, , ^4,

1.Department of Civil Engineering,Harbin Institute of Technology,Weihai 264209,China

2.School of Civil Engineering,Harbin Institute of Technology,Harbin 150001,China

3.School of Civil Engineering,Harbin Institute of Technology,Harbin 150001,China

4.School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China

基金项目: the National Natural Science Foundation of China(50678054)

Numerical Simulation and Assessment of Self-induced Tensile Stresses in Steel Ring Restrained Concrete

MA Xinwei ^1, , LI Xueying ^2, , WANG Chen ^3, , HAN Zhaoxiang ^4,

1.Department of Civil Engineering,Harbin Institute of Technology,Weihai 264209,China

2.School of Civil Engineering,Harbin Institute of Technology,Harbin 150001,China

3.School of Civil Engineering,Harbin Institute of Technology,Harbin 150001,China

4.School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China

Keywords： restrained shrinkage

For a better understanding of the strains and Stresses,numerical simulation was conducted by using ANSYS under the assumption of absolute bond between the steel and concrete .The results show that the stresses and strains in such concrete and steel rings are uneven; the curves of strains and stresses change gradually around the interface .To ease numerical computation,the mechanical system was simplified under the assumptions of synchronous deformation and uniform strains and stresses .The results of the numerical simulation and simplified stress calculation can match almost perfectly .It means that the simplified mechanical model can be used in stress and viscoelastic behavior quantification .

参考文献

[1]	Akhter B. Hossain;Jason Weiss .Assessing residual stress development and stress relaxation in restrained concrete ring specimens[J].Cement & concrete composites,2004(5):531-540.
[2]	M.Pigeon;G.Toma;A.Delagrave .Equipment ofr the analysis of the behaviour of concrete under restrained shrinkage at early ages[J].Magazine of concrete research,2000(4):297-302.
[3]	Heather T. See;Emmanuel K. Attiogbe;Matthew A. Miltenberger .Shrinkage Cracking Characteristics of Concrete Using Ring Specimens[J].ACI materials journal,2003(3):239-245.
[4]	MA Xinwei,CAO Lixin,R D Hooton,H Lam,NIU Changren.Time-dependent Early-age Behaviors of Concrete under Restrained Condition[J].武汉理工大学学报（材料科学版）（英文版）,2007(02):350-353.

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Numerical Simulation and Assessment of Self-induced Tensile Stresses in Steel Ring Restrained Concrete

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