Numerical Analysis of Ductility in Reinforced Concrete Beams in the CASTEM 2000

机译：CASTEM 2000中钢筋混凝土梁延性的数值分析

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Through constitutive non-linear numerical analysis using the finite element methodrnemploying the CASTEM 2000 program, we have sought to evaluate the global andrnlocal indexes in reinforced concrete beams subject to pure and simple flexionrnobtained by means of the load – deflection and moment – curvature functionsrnrespectively.rnFor beams subject to the pure flexing, we have evaluated the influence of thernconcrete strength, the longitudinal tension reinforced ratio, the tensile reinforcementrnratio, the spacing between stirrups and the scale effect in the process ofrndeformability of the studied beams. For the beams subject to the simple flexing, therninfluence of the concrete strength on the global and local ductility was evaluated.rnThe CASTEM 2000 uses the method of the finite elements for structural analysis,rnthe elastic– plastic model of Drucker-Prager to describe the rheology of the concrete,rnthe elastic– plastic perfect model for the steel and the method of Newton-Raphson,rncommonly used for solution of non-linear systems. The reliability of the numericalrnresults has been confirmed by comparison with experimental results obtained by arnnumber of researchers.

机译：通过使用CASTEM 2000程序的有限元方法进行本构非线性数值分析，我们试图通过荷载-挠度和弯矩-曲率函数分别评估纯净简支屈曲钢筋混凝土梁的整体和局部指标。受纯弯曲的梁，我们在研究梁的可变形性过程中，评估了混凝土强度，纵向抗张比，抗张比，箍筋间距和尺度效应的影响。对于简单弯曲的梁，评估了混凝土强度对整体和局部延性的影响。rnCASTEM 2000使用有限元方法进行结构分析，使用Drucker-Prager的弹塑性模型描述流变学在混凝土中，钢的弹塑性完美模型和Newton-Raphson的方法通常用于非线性系统的求解。通过与大量研究人员获得的实验结果进行比较，证实了数值结果的可靠性。

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来源
《Proceedings of the Sixth international conference on computational structures technology》|2002年|p.1-17|共17页
会议地点 Prague(CZ);Prague(CZ);Prague(CZ);Prague(CZ)
作者
M.P. Barbosa; A.L. Gamino;
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作者单位

Department of Civil EngineeringS?o Paulo State University, Ilha Solteira, Brazil;

Department of Civil EngineeringS?o Paulo State University, Ilha Solteira, Brazil;

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会议组织
原文格式 PDF
正文语种 eng
中图分类结构理论、计算;
关键词
ductility; reinforced concrete beams; CASTEM 2000; numericalrnanalysis; finite element method; concrete strength; longitudinal tension reinforcedrnratio; tensile reinforcement ratio; spacing between stirrups; scale effect;

机译：延性；钢筋混凝土梁； CASTEM 2000；数值分析；有限元法；混凝土强度；纵向拉伸钢筋比；拉伸比；箍筋间距；尺度效应;

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Numerical Analysis of Ductility in Reinforced Concrete Beams in the CASTEM 2000

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