基于三维单元的多层钢管混凝土框架非线性有限元分析
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摘要
钢管混凝土能够充分发挥钢材和混凝土的特点,在实际工程中的应用越来越广泛。本文采用有限元软件ABAQUS对多层钢管混凝土框架进行三维有限元数值模拟,考虑材料及几何非线性,分析了钢管混凝土框架在单调加载下的荷载-位移全过程,探讨了采用该方法时的建模、核心混凝土及钢材本构模型的选取、钢管与混凝土之间的界面处理等关键问题,数值模拟结果和试验结果总体上吻合良好。
The steels and concrete can express their characteristics adequately in apply of concrete-filled steel tube(CFST) structures which have been used to the pract ical engineering widely.Basing on the elastic-plasticity theory,the software A BAQUS was used to do a three-dimension finite element numerical simulation to a multi-story CFST frame structure.The material and geometric nonlinear were co nsidered,and the load versus displacements(P-Δ) relation of the CFST fra me was analyzed under monotonic loading.Some critical issues,such as the const itutive model of core concrete and steel,interface model of steel tube and conc rete,were discussed.Numerical simulation and experimental results show good ag reement.
The steels and concrete can express their characteristics adequately in apply of concrete-filled steel tube(CFST) structures which have been used to the pract ical engineering widely.Basing on the elastic-plasticity theory,the software A BAQUS was used to do a three-dimension finite element numerical simulation to a multi-story CFST frame structure.The material and geometric nonlinear were co nsidered,and the load versus displacements(P-Δ) relation of the CFST fra me was analyzed under monotonic loading.Some critical issues,such as the const itutive model of core concrete and steel,interface model of steel tube and conc rete,were discussed.Numerical simulation and experimental results show good ag reement.
引文
[1]韩林海,陶忠,王文达.现代组合结构和混合结构-试验、理论和方法[M].北京:科学出版社,2009.
[2]王文达,韩林海,陶忠.钢管混凝土柱-钢梁平面框架抗震性能的试验研究[J].建筑结构学报,2006,27(3):48-58.
[3]王来,王铁成,陈倩.低周反复荷载下方钢管混凝土框架抗震性能的试验研究[J].地震工程与工程振动,2003,23(3):113-117.
[4]李忠献,许成祥,王冬,等.钢管混凝土框架结构抗震性能的试验研究[J].建筑结构,2004,34(1):3-6.
[5]孙修礼,梁书亭,段友利.钢管混凝土框架骨架曲线研究[J].地震工程与工程振动,2007,27(1):99-103.
[6]王文达,韩林海.钢管混凝土框架结构力学性能非线性有限元分析[J].建筑结构学报,2008,29(6):75-83.
[7]王文达,韩林海.钢管混凝土框架实用荷载-位移恢复力模型研究[J].工程力学,2008,25(11):62-69.
[8]Wang W D,Han L H,Zhao X L.Analytical behavior of frames with steel beams to concrete-filled steel tubu-lar column[J].Journal of Constructional Steel Re-search,2009,65(3):497-508.
[9]Han L H,Wang W D,Tao Z.Performance of circular CFST column to steel beam frames under lateral cyclic loading[J].Journal of Constructional Steel Research,2011,67(5):876-890.
[10]Hibbitt,Karlson&Sorensen Inc.ABAQUS User’s Manual,Version6.10[M].Providence(RI):Hib-bitt,Karlsson&Sorensen,Inc.,2010.
[2]王文达,韩林海,陶忠.钢管混凝土柱-钢梁平面框架抗震性能的试验研究[J].建筑结构学报,2006,27(3):48-58.
[3]王来,王铁成,陈倩.低周反复荷载下方钢管混凝土框架抗震性能的试验研究[J].地震工程与工程振动,2003,23(3):113-117.
[4]李忠献,许成祥,王冬,等.钢管混凝土框架结构抗震性能的试验研究[J].建筑结构,2004,34(1):3-6.
[5]孙修礼,梁书亭,段友利.钢管混凝土框架骨架曲线研究[J].地震工程与工程振动,2007,27(1):99-103.
[6]王文达,韩林海.钢管混凝土框架结构力学性能非线性有限元分析[J].建筑结构学报,2008,29(6):75-83.
[7]王文达,韩林海.钢管混凝土框架实用荷载-位移恢复力模型研究[J].工程力学,2008,25(11):62-69.
[8]Wang W D,Han L H,Zhao X L.Analytical behavior of frames with steel beams to concrete-filled steel tubu-lar column[J].Journal of Constructional Steel Re-search,2009,65(3):497-508.
[9]Han L H,Wang W D,Tao Z.Performance of circular CFST column to steel beam frames under lateral cyclic loading[J].Journal of Constructional Steel Research,2011,67(5):876-890.
[10]Hibbitt,Karlson&Sorensen Inc.ABAQUS User’s Manual,Version6.10[M].Providence(RI):Hib-bitt,Karlsson&Sorensen,Inc.,2010.
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