方钢管混凝土压弯构件塑性屈服面的简化确定方法
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摘要
采用塑性铰方法模拟钢管混凝土结构的弹塑性工作性能时,常需要定义钢管混凝土柱截面的塑性屈服面。纤维模型法虽然可以较好的应用于钢管混凝土截面的塑性屈服面分析,但从实际应用的角度考虑,数值方法还是显得较为复杂,不便于工程应用。因此文中在已有方钢管混凝土(concrete-filled square steel tubular,CFST)构件试验研究和理论研究的基础上,首先给出弹性单元参数的确定方法;然后通过理论分析和大量的参数分析,提出了一种方钢管混凝土柱截面轴力-弯矩相关塑性屈服面的快速确定方法。并对纤维模型法与文中建议方法的计算结果进行比较,两者吻合较好,验证了文中方法的正确性。
When the plastic hinge method is used to simulate the elasto-plastic properties of concrete-filled steel tubular structures,the plastic interactive yield surfaces of concrete-filled steel tubular column sections need to be defined. Although the fiber model approach can be well applied to the yield surface analysis,the numerical method is still complicated for the real applications. Therefore based on the experimental and theoretical researches on concrete-filled square steel tubular (CFST) members,this paper develops one method to determine the elastic element parameters. Then a simplified approach to quickly define the axial force-moment interactive plastic yield surface of concrete-filled square steel tubular columns is developed through theoretical analysis and a large number of parametric analyses. Finally,the fiber model method is adopted to verify the feasibility and validity of the proposed method. Results of the two methods are in good agreement,which indicates that the proposed method is reliable.
When the plastic hinge method is used to simulate the elasto-plastic properties of concrete-filled steel tubular structures,the plastic interactive yield surfaces of concrete-filled steel tubular column sections need to be defined. Although the fiber model approach can be well applied to the yield surface analysis,the numerical method is still complicated for the real applications. Therefore based on the experimental and theoretical researches on concrete-filled square steel tubular (CFST) members,this paper develops one method to determine the elastic element parameters. Then a simplified approach to quickly define the axial force-moment interactive plastic yield surface of concrete-filled square steel tubular columns is developed through theoretical analysis and a large number of parametric analyses. Finally,the fiber model method is adopted to verify the feasibility and validity of the proposed method. Results of the two methods are in good agreement,which indicates that the proposed method is reliable.
引文
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[3]KRISHNAN,SWAMINATHAN.Modeling steel frame buildings in three di mensions I:panel zone and plastic hinge beamelements[J].Journal of Engineering Mechanics,2006,132(4):345-358.
[4]LU,C K,BRADFORD,M A,CHEN,WF.Second-order inelastic analysis of composite framed structures based on the refined plastic hinge method[J].Engineering Structures,2009,31(3):799-813.
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[6]缪志伟,吴耀辉,马千里,等.框架-核心筒高层混合结构的三维空间弹塑性抗震分析[J].建筑结构学报,2009,30(4):119-129.MIAO ZHI-WEI,WU YAO-HUI,MA QIAN-LI,et al.Seismic performance evaluation using nonlinear ti me history analysis with three-di mensional structural model for a hybrid frame-core tube structure[J].Journal of Building Structures,2009,30(4):119-129.
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[12]陈麟,张素梅,陈洪涛,等.钢管混凝土空间框架的刚度分析[J].哈尔滨建筑大学学报,2001,34(2):22-26.CHEN LIN,ZHANG SU-MEI,CHEN HONG-TAO,et al.Stiffness analysis for concrete-filled steel tubular space frame[J].Journal of Harbin University of C.E.&Architecture2001,34(2):22-26.
[13]盛骤,谢式千,潘承毅.概率论与数理统计[M].北京:高等教育出版社,1997.
[14]张建辉.方钢管混凝土框架柱的抗震性能分析[D].天津:天津大学,2004.ZHANG JIAN-HUI.Study on seismic behaviors of concrete filled square steel tubular frame columns[D].TianJin:Tianjin University,2004.
[15]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.WANG WEN-DA,HAN LIN-HAI,TAO ZHONG.Experi mental research on seismic behavior of concrete filled CHS and SHS columns and steel beam planar frames[J].Journal of Building Structures,2006,27(3):48-58.
[2]SCOTT,MICHAEL H,FENVES,GREGORY L.Plastic hingeintegration methods for force-based beam-column elements[J].Journal of Structural Engineering,2006,132(2):244-252.
[3]KRISHNAN,SWAMINATHAN.Modeling steel frame buildings in three di mensions I:panel zone and plastic hinge beamelements[J].Journal of Engineering Mechanics,2006,132(4):345-358.
[4]LU,C K,BRADFORD,M A,CHEN,WF.Second-order inelastic analysis of composite framed structures based on the refined plastic hinge method[J].Engineering Structures,2009,31(3):799-813.
[6]楚留声,白国良.型钢混凝土框架pushover分析[J].地震工程与工程振动,2009,29(2):51-56.CHU LI U-SHENG,BAI GUO-LIANG.Pushover analysis of steel reinforced concrete frame[J].Journal of Earthquake Engineering and Engineering Vibration,2009,29(2):51-56.
[6]缪志伟,吴耀辉,马千里,等.框架-核心筒高层混合结构的三维空间弹塑性抗震分析[J].建筑结构学报,2009,30(4):119-129.MIAO ZHI-WEI,WU YAO-HUI,MA QIAN-LI,et al.Seismic performance evaluation using nonlinear ti me history analysis with three-di mensional structural model for a hybrid frame-core tube structure[J].Journal of Building Structures,2009,30(4):119-129.
[7]韩林海,杨有福.现代钢管混凝土结构技术[M].北京:中国建筑工业出版社,2007.
[8]中国工程建设标准化协会.CECS159:2004矩形钢管混凝土结构技术规程[S].北京:中国标准出版社,2004.
[9]福建省建设厅.DBJ13-51-2003钢管混凝土结构技术规程[S].福州:福建省建设标准,2003.
[10]Eurocode4,1994.Design of composite steel and concrete structures,Part.1:General rules and rules for buildings(together with United Kingdom National Application Document)[S].DD ENV1994-1-1:1994,British Standard Institution,London W1A2BS.
[11]李珠,郭秀华,张文芳,等.中国国家大剧院分析中钢管混凝土柱的简化分析[J].工程力学,2004,21(4):34-38.LI ZHU,GUO XIU-HUA,ZHANG WEN-FANG,et al.Si mplified analysis of concrete filled tubular columns in the structural analysis of national grand theatre of China[J].Engineering Mechanics,2004,21(4):34-38.
[12]陈麟,张素梅,陈洪涛,等.钢管混凝土空间框架的刚度分析[J].哈尔滨建筑大学学报,2001,34(2):22-26.CHEN LIN,ZHANG SU-MEI,CHEN HONG-TAO,et al.Stiffness analysis for concrete-filled steel tubular space frame[J].Journal of Harbin University of C.E.&Architecture2001,34(2):22-26.
[13]盛骤,谢式千,潘承毅.概率论与数理统计[M].北京:高等教育出版社,1997.
[14]张建辉.方钢管混凝土框架柱的抗震性能分析[D].天津:天津大学,2004.ZHANG JIAN-HUI.Study on seismic behaviors of concrete filled square steel tubular frame columns[D].TianJin:Tianjin University,2004.
[15]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.WANG WEN-DA,HAN LIN-HAI,TAO ZHONG.Experi mental research on seismic behavior of concrete filled CHS and SHS columns and steel beam planar frames[J].Journal of Building Structures,2006,27(3):48-58.
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