摘要The deformation regularity of concrete beams after cracking is studied. Finite element (FE) models of a simply supported beam under distributed loading and a continuous beam under distributed loading are built using ANSYS. Cracks with different widths, depths, and locations are simulated after deleting some elements in these models, and the maximum displacement and deformation regularities are observed. The result of FE simulation shows that (1) the crack width has a negligible effect on the maximum displacement of the beam; (2) the crack depth evidently affects the maximum displacement, that is, a deeper crack results in a larger extent of the effect; and (3) the location of the crack affects the maximum displacement of the beam by changing the location of the maximum displacement in the beam, that is, a deeper crack results in a larger extent of the effect.
Abstract：The deformation regularity of concrete beams after cracking is studied. Finite element (FE) models of a simply supported beam under distributed loading and a continuous beam under distributed loading are built using ANSYS. Cracks with different widths, depths, and locations are simulated after deleting some elements in these models, and the maximum displacement and deformation regularities are observed. The result of FE simulation shows that (1) the crack width has a negligible effect on the maximum displacement of the beam; (2) the crack depth evidently affects the maximum displacement, that is, a deeper crack results in a larger extent of the effect; and (3) the location of the crack affects the maximum displacement of the beam by changing the location of the maximum displacement in the beam, that is, a deeper crack results in a larger extent of the effect.
基金资助:Supported by the National Natural Science Foundation of China (NO.51008148);the Program for Excellent Young Scholar from the Education Department of Liaoning Province (No.LJQ2013037)
通讯作者:
YANG Xiao-ming, xiao_m_y@163.com
E-mail: xiao_m_y@163.com
引用本文:
杨晓明, 陈永林, 韩志强, 米雅妹. 混凝土梁开裂后的变形规律研究[J]. Journal of Highway and Transportation Research and Development, 2014, 8(2): 59-65.
YANG Xiao-ming, CHEN Yong-lin, HAN Zhi-qiang, MI Ya-mei. Deformation Regularity of Concrete Beam after Cracking. Journal of Highway and Transportation Research and Development, 2014, 8(2): 59-65.
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