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Reliability analysis of circular concrete-filled steel tube with material and geometrical nonlinearity 被引量：1

Reliability analysis of circular concrete-filled steel tube with material and geometrical nonlinearity
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摘要 Most of the previous research on concrete-filled steel tube is restricted to a deterministic approach. To gain clear insight into the random properties of circular concrete-filled steel tube, reliability analysis is carried out in the present study. To obtain the Structural nonlinear response and ultimate resistance capacity, material and geometrical nonlinear analysis of circular concrete-filled steel tube is performed with a three-dimensional degenerated beam ele- ment. Then we investigate the reliability of concrete-filled steel tube using the first-order reliability method combined with nonlinear finite element analysis. The influences of such parameters as material strength, slenderness, initial geo- metrical imperfection, etc. on the reliability of circular concrete-filled steel tube column are studied. It can be con- cluded that inevitable random fluctuation of those parameters has significant influence on structural reliability, and that stochastic or reliability methods can provide a more rational and subjective evaluation on the safety of CFT structures than a deterministic approach. Most of the previous research on concrete-filled steel tube is restricted to a deterministic approach. To gain clear insight into the random properties of circular concrete-filled steel tube, reliability analysis is carried out in the present study. To obtain the Structural nonlinear response and ultimate resistance capacity, material and geometrical nonlinear analysis of circular concrete-filled steel tube is performed with a three-dimensional degenerated beam ele- ment. Then we investigate the reliability of concrete-filled steel tube using the first-order reliability method combined with nonlinear finite element analysis. The influences of such parameters as material strength, slenderness, initial geo- metrical imperfection, etc. on the reliability of circular concrete-filled steel tube column are studied. It can be con- cluded that inevitable random fluctuation of those parameters has significant influence on structural reliability, and that stochastic or reliability methods can provide a more rational and subjective evaluation on the safety of CFT structures than a deterministic approach.
作者 Tengfei XU Tianyu XIANG Yulin ZHAN Renda ZHAO
机构地区 School of Civil Engineering
出处 《Journal of Modern Transportation》 2012年第3期138-147,共10页 现代交通学报（英文版）
基金 supported by the Fundamental Research Funds for the Central Universities (SWJTU09CX012 and SWJTU11BR006) the Doctoral Fund for Youth Scholars of Ministry of Educationof China (No. 20110184120010)
关键词 concrete-filled steel tube RELIABILITY material nonlinearity geometrical nonlinearity concrete-filled steel tube reliability material nonlinearity geometrical nonlinearity
分类号 TU528.73 [建筑科学—建筑技术科学] O343.1 [理学—固体力学]
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参考文献26

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同被引文献14

  • 1向天宇,童育强,赵人达.基于退化梁单元的混凝土结构徐变分析[J].工程力学,2006,23(4):140-143. 被引量：9
  • 2占玉林,向天宇,赵人达.几何非线性结构的徐变效应分析[J].工程力学,2006,23(7):45-48. 被引量：17
  • 3BAZANT Z, LI Guanghua. Unbiased statistical comparison of creep and shrinkage prediction models[J]. ACI Materials Journal, 2008, 105(6): 610-621.
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  • 5YANG I. Uncertainty and sensitivity analysis of time-dependent effects in concrete structures[J]. Engineering Structures, 2007, 29(7): 1366-1374.
  • 6GOEL R, KUMAR R, PAUL D K. Comparative study of various creep and shrinkage prediction models for concrete[J]. Journal of Materials in Civil Engineering, ASCE, 2007, 19(3): 249-260.
  • 7GARDNER N J, LOCKMAN M J. Design provisions for drying shrinkage and creep of normal-strength concrete[J]. ACI Material Journal, 2001, 98(2): 159-167.
  • 8KEITEL H, OSBURG A D. Uncertainty and sensitivity analysis of creep models for uncorrelated and correlated input parameters[J]. Engineering Structures 2010, 32(11): 3758-3767.
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  • 10LAUMET P. Reliability-based deterioration model for deflection limit state girder bridges. Michigan: The University of Michigan, 2006.

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Journal of Modern Transportation
2012年 第3期

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