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方钢管再生混凝土长柱偏心受压性能有限元分析
Finite Element Analysis on Eccentric Compression Properties of Recycled Aggregate Concrete Filled Steel Tubular Columns
有限元分析;偏心受压;长细比;力学性能
有限元分析;偏心受压;长细比;力学性能
Finite element analysis; Eccentric compression; Slenderness ratio; Mechanical property
1000-4637(2017)03-39-05
国家自然基金资助项目(51308479);四川省教育厅资助项目(13ZB0179);绵阳市科技攻关项目(15S-02-3)
吴先哲,张兆强,姚 勇
西南科技大学土木工程与建筑学院,绵阳 621010

吴先哲,张兆强,姚 勇

吴先哲,张兆强,姚勇.方钢管再生混凝土长柱偏心受压性能有限元分析[J].混凝土与水泥制品,2017(3):39-43.

WU X Z, ZHANG Z Q, YAO Y.Finite Element Analysis on Eccentric Compression Properties of Recycled Aggregate Concrete Filled Steel Tubular Columns[J].China Concrete and Cement Products,2017(3):39-43.

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摘 要:在8根方钢管再生混凝土长柱偏心受压试件试验研究的基础上,利用有限元软件ANSYS建立了方钢管再生混凝土长柱偏心受压的计算模型。通过计算得出了荷载-位移曲线,分析了构件的变形性能以及长细比、偏心距等因素对极限承载力的影响,并将计算结果与试验结果进行了对比分析。结果表明:方钢管再生混凝土长柱偏压构件主要表现为整体失稳破坏;其偏压弹性刚度随长细比及偏心距的增大呈先增后减的趋势;延性及轴向耗能能力随长细比的增大呈先减后增的趋势,随偏心距的增大呈先增后减的趋势;构件极限承载力随长细比及偏心距的增大而减小;计算结果与试验结果吻合良好,能够较真实地反映试验结果,所建立的有限元模型能够有效地对方钢管再生混凝土柱偏压力学性能进行全过程分析。 Abstract: Based on the experiment, eight recycled aggregate concrete filled steel tubular long columns finite element models are built by using the finite element software ANSYS. Through the nonlinear computation, the load-displacement curves of the models are obtained, the axial deformation performance of the artifacts, the influence of slenderness ratio and eccentricity on ultimate bearing capacity are analyzed and the calculated results are compared with the experimental results in order to analyze the similarities and differences. The results indicate that recycled aggregate concrete filled steel tubular long columns show the overall instability damage; the elastic stiffness tends to first increase and then decrease with the increasing of slenderness ratio and eccentricity, the axial energy dissipation capacity and the ductility tend to first decrease and then increase with the increase of slenderness ratio, but tend to first increase and then decrease with the increasing of eccentricity;the component bearing capacity decreases with the increase of slenderness ratio and eccentricity. The calculation results are in good agreement with the experiment results, it can truly reflect the experimental results, and the finite element model can effectively analysis the mechanical properties of recycled aggregate concrete filled square steel tubular long columns under eccentric compression loading.
英文名 : Finite Element Analysis on Eccentric Compression Properties of Recycled Aggregate Concrete Filled Steel Tubular Columns
刊期 :
关键词 : 有限元分析;偏心受压;长细比;力学性能
Key words : 有限元分析;偏心受压;长细比;力学性能
刊期 : Finite element analysis; Eccentric compression; Slenderness ratio; Mechanical property
DOI :
文章编号 : 1000-4637(2017)03-39-05
基金项目 : 国家自然基金资助项目(51308479);四川省教育厅资助项目(13ZB0179);绵阳市科技攻关项目(15S-02-3)
作者 : 吴先哲,张兆强,姚 勇
单位 : 西南科技大学土木工程与建筑学院,绵阳 621010

吴先哲,张兆强,姚 勇

吴先哲,张兆强,姚勇.方钢管再生混凝土长柱偏心受压性能有限元分析[J].混凝土与水泥制品,2017(3):39-43.

WU X Z, ZHANG Z Q, YAO Y.Finite Element Analysis on Eccentric Compression Properties of Recycled Aggregate Concrete Filled Steel Tubular Columns[J].China Concrete and Cement Products,2017(3):39-43.

摘要
参数
结论
参考文献
引用本文

摘   要:在8根方钢管再生混凝土长柱偏心受压试件试验研究的基础上,利用有限元软件ANSYS建立了方钢管再生混凝土长柱偏心受压的计算模型。通过计算得出了荷载-位移曲线,分析了构件的变形性能以及长细比、偏心距等因素对极限承载力的影响,并将计算结果与试验结果进行了对比分析。结果表明:方钢管再生混凝土长柱偏压构件主要表现为整体失稳破坏;其偏压弹性刚度随长细比及偏心距的增大呈先增后减的趋势;延性及轴向耗能能力随长细比的增大呈先减后增的趋势,随偏心距的增大呈先增后减的趋势;构件极限承载力随长细比及偏心距的增大而减小;计算结果与试验结果吻合良好,能够较真实地反映试验结果,所建立的有限元模型能够有效地对方钢管再生混凝土柱偏压力学性能进行全过程分析。

Abstract: Based on the experiment, eight recycled aggregate concrete filled steel tubular long columns finite element models are built by using the finite element software ANSYS. Through the nonlinear computation, the load-displacement curves of the models are obtained, the axial deformation performance of the artifacts, the influence of slenderness ratio and eccentricity on ultimate bearing capacity are analyzed and the calculated results are compared with the experimental results in order to analyze the similarities and differences. The results indicate that recycled aggregate concrete filled steel tubular long columns show the overall instability damage; the elastic stiffness tends to first increase and then decrease with the increasing of slenderness ratio and eccentricity, the axial energy dissipation capacity and the ductility tend to first decrease and then increase with the increase of slenderness ratio, but tend to first increase and then decrease with the increasing of eccentricity;the component bearing capacity decreases with the increase of slenderness ratio and eccentricity. The calculation results are in good agreement with the experiment results, it can truly reflect the experimental results, and the finite element model can effectively analysis the mechanical properties of recycled aggregate concrete filled square steel tubular long columns under eccentric compression loading.

关键词:
有限元分析;偏心受压;长细比;力学性能
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(1)通过有限元软件ANSYS建立的方钢管再生混凝土长柱偏压计算模型所得出的计算结果与试验结果吻合良好,能够较真实地反映试验结果,所建立的有限元模型能够有效地对方钢管再生混凝土柱偏压力学性能进行全过程分析。
(2)对于方钢管再生混凝土长柱偏压构件,在偏心距一定的情况下,构件弹性偏压刚度随长细比的增大呈先增后减的趋势,延性及轴向耗能能力随长细比的增大呈先减后增的趋势;在长细比一定的情况下,构件偏压弹性刚度随偏心距的增大呈先增后减的趋势,延性及轴向耗能能力随偏心距的增大呈先增后减的趋势;有限元计算结果与试验结果基本吻合。
(3)承载力影响因素表明,在骨料取代率及偏心距一定的情况下,构件承载力随长细比的增大而减小,且降低幅度较为明显;在骨料取代率及长细比一定的情况下,试件承载力随偏心距的增大而减小,且变化趋势是呈非线性的,承载力降低幅度呈逐渐增大趋势。
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吴先哲,张兆强,姚勇.方钢管再生混凝土长柱偏心受压性能有限元分析[J].混凝土与水泥制品,2017(3):39-43.

WU X Z, ZHANG Z Q, YAO Y.Finite Element Analysis on Eccentric Compression Properties of Recycled Aggregate Concrete Filled Steel Tubular Columns[J].China Concrete and Cement Products,2017(3):39-43.

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