考虑初应力的钢管混凝土格构柱受力性能有限元分析

doi:10.3969/j.issn.1002-0268.2014.11.010

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摘要 A finite element method (FEM), which implements ANSYS to analyze the performance of concrete-filled steel tubular (CFST) latticed column with initial stress, was presented. Studies showed that the FEM results agree well with the test results. The full loading process of the CFST latticed column subjected to axial load was analyzed by combining FEM with two parameters of initial stress degree and slenderness ratio. Research results indicated that the initial stress in the steel tube of the CFST latticed column advances and elongates the elastic-plastic phase of the specimens and postpones the occurrence of ultimate load bearing capacity and relevant displacement. Furthermore, the ultimate load exhibits a significant decrease of up to 12% for long columns with large ISD, but not for short columns.

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	黄福云
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关键词 ： bridge engineering, initial stress degree, finite element method, latticed column, concrete filled steel tube, slenderness ratio

Abstract：A finite element method (FEM), which implements ANSYS to analyze the performance of concrete-filled steel tubular (CFST) latticed column with initial stress, was presented. Studies showed that the FEM results agree well with the test results. The full loading process of the CFST latticed column subjected to axial load was analyzed by combining FEM with two parameters of initial stress degree and slenderness ratio. Research results indicated that the initial stress in the steel tube of the CFST latticed column advances and elongates the elastic-plastic phase of the specimens and postpones the occurrence of ultimate load bearing capacity and relevant displacement. Furthermore, the ultimate load exhibits a significant decrease of up to 12% for long columns with large ISD, but not for short columns.

Key words： bridge engineering initial stress degree finite element method latticed column concrete filled steel tube slenderness ratio

收稿日期: 2014-10-29

基金资助:Supported by the National Natural Science Foundation of China (No.51208111);the Natural Science Foundation of Fujian Province (No.2013J05071)

通讯作者: HUANG Fu-yun, E-mail:huangfuyun@fzu.edu.cn E-mail: huangfuyun@fzu.edu.cn

引用本文:

黄福云, 钱海敏, 俞冠, 庄一舟. 考虑初应力的钢管混凝土格构柱受力性能有限元分析[J]. Journal of Highway and Transportation Research and Development, 2015, 9(2): 41-46.
HUANG Fu-yun, QIAN Hai-min, YU Guan, ZHUANG Yi-zhou. Finite Element Analysis on Mechanical Performance of Concrete-filled Steel Tubular Latticed Column with Initial Stress. Journal of Highway and Transportation Research and Development, 2015, 9(2): 41-46.

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http://manu27.magtech.com.cn/Jwk_gljtkj_en/CN/10.3969/j.issn.1002-0268.2014.11.010 或 http://manu27.magtech.com.cn/Jwk_gljtkj_en/CN/Y2015/V9/I2/41

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