设置横隔板方钢管混凝土柱轴压性能有限元非线性分析
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摘要
钢管混凝土柱受压性能研究中,有限元非线性分析是重要的研究手段,而材料本构模型选用更是提高分析精度的关键因素。本文设置横隔板方钢管混凝土柱的有限元非线性分析中,约束混凝土采用Han本构模型,钢材采用考虑应变硬化段的弹塑性模型。分析结果表明,按照所选用的材料本构模型,数值模拟与实测荷载-应变曲线的上升段吻合较好,下降段存在差异,材料本构模型的下降段有待优化。
In the study of compressive behavior of concrete filled steel tube(CFST)columns,the nonlinear analysis of finite element method(FEM)is an important means. The key is the usage of material constitutive models which decides the precision of FEM analysis. In this paper,the Han's constitutive model was selected in confined concrete and the elasto-plastic model considering strain hardening was used in rolled steel. The results of analysis indicate that the curves of simulation and test have a good agreement in the ascending stage of the cures instead of the descending stage based on the selected material constitutive models,which needs to optimize in the further work.
In the study of compressive behavior of concrete filled steel tube(CFST)columns,the nonlinear analysis of finite element method(FEM)is an important means. The key is the usage of material constitutive models which decides the precision of FEM analysis. In this paper,the Han's constitutive model was selected in confined concrete and the elasto-plastic model considering strain hardening was used in rolled steel. The results of analysis indicate that the curves of simulation and test have a good agreement in the ascending stage of the cures instead of the descending stage based on the selected material constitutive models,which needs to optimize in the further work.
引文
[1]Hu H T,Asce M,Huang C S,et al.Nonlinear Analysis of Axially Loaded Concrete-Filled Tube Columns with Confinement Effect[J].Journal of Structural Engineering,2003,129(10):1322-1329.
[2]Patel V I,Liang Q Q,Hadi M N S.High Strength Thin-walled Rectangular Concrete-filled Steel Tubular Slender Beam-columns,Part I:Modeling[J].Journal of Constructional Steel Research,2012,70(2):377-384.
[3]Hou C,Han L H,Zhao X L.Concrete-filled Circular Steel Tubes Subjected to Local Bearing Force:Finite Element Analysis[J].Thin-walled Structures,2014,77(2):109-119.
[4]屠永清,刘林林,叶英华.多室式钢管混凝土T形短柱的非线性分析[J].工程力学,2012,29(1):134-140.
[5]马丽娅,屠永清.多室式钢管混凝土组合L形柱轴压性能有限元分析[J].建筑结构学报,2013,34(S1):306-313.
[6]杨光,曹万林,董宏英,等.异形截面多腔钢管混凝土巨型分叉柱轴压性能试验研究[J].建筑结构学报,2016,37(5):57-68.
[7]杨光,曹万林,董宏英,等.巨型钢管混凝土分叉柱节点压弯性能试验研究[J].北京工业大学学报,2018,44(1):153-161.
[8]杨光,曹万林,董宏英,等.异形截面多腔钢管混凝土巨型分叉柱轴压应变试验分析[J].自然灾害学报,2016,25(6):138-149.
[9]张建伟,胡建华,乔崎云,等.不同构造措施对异形截面多腔体钢管混凝土柱的力学性能影响[J].北京工业大学学报,2015,(8):1172-1178.
[10]Han L H,Yao G H,Zhao X L.Tests and Calculations for Hollow Structural Steel(HSS)Stub Columns Filled with Self-consolidating Concrete(SCC)[J].Journal of Constructional Steel Research,2005,61(9):1241-1269.
[2]Patel V I,Liang Q Q,Hadi M N S.High Strength Thin-walled Rectangular Concrete-filled Steel Tubular Slender Beam-columns,Part I:Modeling[J].Journal of Constructional Steel Research,2012,70(2):377-384.
[3]Hou C,Han L H,Zhao X L.Concrete-filled Circular Steel Tubes Subjected to Local Bearing Force:Finite Element Analysis[J].Thin-walled Structures,2014,77(2):109-119.
[4]屠永清,刘林林,叶英华.多室式钢管混凝土T形短柱的非线性分析[J].工程力学,2012,29(1):134-140.
[5]马丽娅,屠永清.多室式钢管混凝土组合L形柱轴压性能有限元分析[J].建筑结构学报,2013,34(S1):306-313.
[6]杨光,曹万林,董宏英,等.异形截面多腔钢管混凝土巨型分叉柱轴压性能试验研究[J].建筑结构学报,2016,37(5):57-68.
[7]杨光,曹万林,董宏英,等.巨型钢管混凝土分叉柱节点压弯性能试验研究[J].北京工业大学学报,2018,44(1):153-161.
[8]杨光,曹万林,董宏英,等.异形截面多腔钢管混凝土巨型分叉柱轴压应变试验分析[J].自然灾害学报,2016,25(6):138-149.
[9]张建伟,胡建华,乔崎云,等.不同构造措施对异形截面多腔体钢管混凝土柱的力学性能影响[J].北京工业大学学报,2015,(8):1172-1178.
[10]Han L H,Yao G H,Zhao X L.Tests and Calculations for Hollow Structural Steel(HSS)Stub Columns Filled with Self-consolidating Concrete(SCC)[J].Journal of Constructional Steel Research,2005,61(9):1241-1269.