[1]刘伟,丁发兴,邢锋.基于组合单元的圆钢管混凝土结构非线性分析[J].深圳大学学报理工版,2009,26(3):301-304.
　LIU Wei,DING Fa-xing,and XING Feng.Nonlinear finite element analysis of concrete filled circular steel tubular structures based on composite element method[J].Journal of Shenzhen University Science and Engineering,2009,26(3):301-304.
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基于组合单元的圆钢管混凝土结构非线性分析()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第26卷
期数:
2009年3期
页码:
301-304
栏目:
土木建筑工程
出版日期:
2009-07-31

文章信息/Info

Title:
Nonlinear finite element analysis of concrete filled circular steel tubular structures based on composite element method
文章编号:
1000-2618(2009)03-0301-04
作者:
刘伟1; 2; 丁发兴1; 邢锋2
1）中南大学土木建筑学院，长沙410075；
2）深圳大学土木工程学院，深圳518060
Author(s):
LIU Wei1; 2; DING Fa-xing1; and XING Feng2
1)School of Civil Engineering and Architecture，Central South University，Changsha 410075，P．R．China
2)College of Civil Eingineering，Shenzhen University，Shenzhen 518060，P．R．China
关键词:
钢管混凝土; 承载力; 非线性分析; 有限元
Keywords:
concrete filled steel tube; ultimate capacity; nonlinear analysis; finite element
分类号:
TU 398
文献标志码:
A
摘要:
基于圆钢管混凝土组合截面轴力-应变关系和轴力-弯矩-曲率关系实用计算方法，采用U.L.列式单元增量平衡方程，引入平面梁单元非线性分析方法，建立了钢管混凝土结构组合单元法非线性有限元分析理论.编制了相应的非线性有限元程序，对已有钢管混凝土结构的面内受力，如钢管混凝土偏压柱、不等端弯矩钢管混凝土偏压柱、钢管混凝土压弯构件和钢管混凝土模型拱肋等进行双重非线性有限元分析，与基于钢管混凝土拉压数值本构模型的分层梁单元非线性分析理论比较.结果表明，两种分析方法的载荷-变形曲线和极限承载力都很接近试验结果，与分层法相比，组合单元法直接根据杆端力求解截面刚度，不用分层计算截面刚度，加快了计算速度.
Abstract:
The relationship of axial force-strain and axial force-moment-curvature for cross-section in concrete filled steel tubular (CFST) beam-columns is analyzed by practical calculation methods. The nonlinear finite element analysis of CFST structures by composite element method is proposed based on the U.L. formula of element incremental equilibrium and the nonlinear analysis of plane beam element. The method is used in the CFST structures subjected to in-plane load such as CFST columns under eccentric loading of equal end-moment and unequal end-moment, CFST beam-columns, and CFST arches. The data from calculated results are consistent with the data from layered finite element method; both data are verified by the experiments. Comparing with the layered finite element method, the composite element method removes the steps of calculating section stiffness based on layered finite element method while achieving similar results.

参考文献/References:


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［1］DING Fa-xing，YU Zhi-wu，JIANG Li-zhong．Nonlinear finite element analysis of concrete filled circular steel tube structures［J］．Journal of Building Structures，2006，27(4)：110-115(in Chinese)．
［2］DING Fa-xing，YU Zhi-wu．Pure bending properties of self-compacting concrete filled circular steel tube［J］．Journal of Traffic and Transportation Engineering，2006，6(1)：63-68(in Chinese)．
［3］DING Fa-xing，YU Zhi-wu．Practical method of axial force-moment-curvature relationship for concrete-filled circular steel tubular beam-columns［BD/OL］．Science -paper Online［2006-6-13］．http：//www.paper.edu.cn/(in Chinese)．
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［5］CHEN Bao-chun，CHEN You-jie．Experimental study on mechanic behaviors of concrete-filled steel tubular arch under in plane loads［J］．Engineering Mechanics，2000，17(2)：44-50(in Chinese)．
［6］DING Fa-xing．Behavior and design method of concrete filled circular steel tubular structures［D］．Changsha：Central South University，2006(in Chinese)．
［7］CHEN Bao-chun，QIN Ze-bao，HIKOSAKA Hirodshi，et al．Analysis of concrete filled steel tubular (single tube) arch subjected to in-plane loads by nonlinear finite element method［J］．Journal of The China Railway Society，2003，25(4)：80-82(in Chinese)．
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［9］Kilpatrick A E，Rangan B V．Tests on high- strength concrete-filled steel tubular columns［J］．ACI Structural Journal，1999，96(2)：268-274．

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备注/Memo

备注/Memo:
收稿日期：2009-04-17；修回日期：2009-07-10
基金项目：国家自然科学基金重点资助项目(50808180)；教育部博士点基金资助项目(200805331064)
作者简介：刘伟（1977-），男（汉族），湖南省益阳市人，中南大学博士研究生．E-mail：liuwei@szu.edu.cn
更新日期/Last Update: 2009-08-26