| 钢-砼组合梁考虑滑移时收缩徐变应力分析 |
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| 引用本文： | 程海根,刘建村,曾润忠. 钢-砼组合梁考虑滑移时收缩徐变应力分析[J]. 南昌大学学报(工科版), 2005, 27(2): 52-55,66 |
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| 作者姓名： | 程海根 刘建村 曾润忠 |
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| 作者单位： | 华东交通大学,土木建筑学院,江西,南昌,330013 |
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| 摘 要： | 对于工程中常用的钢-砼组合梁，根据组合截面平衡和变形协调条件，利用钢和混凝土材料的本构关系，建立了关于组合梁正截面内力的微分方程，在微分方程中考虑了钢和砼之间的相对滑移、组合梁连接件刚度、混凝土收缩和徐变的综合影响．然后采用差分法求解了简支组合梁在均布荷载作用下的应力历程，并对连接件刚度、环境相对湿度等参数做了分析，分析结果表明组合梁应力分布受环境相对湿度、连接件刚度的影响．
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| 关 键 词： | 组合梁 相对滑移 微分方程 差分法 |
| 文章编号： | 1006-0456(2005)02-0052-04 |
Analysis of Shrinkage and Creep Stress about Composite Box Girders Considering Relative Slippage |
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| CHENG Hai-gen,LIU Jian-cun,ZENG Run-zhong. Analysis of Shrinkage and Creep Stress about Composite Box Girders Considering Relative Slippage[J]. Journal of Nanchang University(Engineering & Technology Edition), 2005, 27(2): 52-55,66 |
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| Authors: | CHENG Hai-gen LIU Jian-cun ZENG Run-zhong |
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| Abstract: | A differential equation of longitudinal forces at a transverse section is constituted corresponding to the compatibility of strain and the equilibrium of forces about steel-concrete composite box girders usually used in civil engineering.In this paper the relative slippage, connectors stiffness and shrinkage & creep are considered.Finite difference method(FDM) is used to calculate a simply supported composite beam.Connectors stiffness,relative humidity and other parameters are studied. |
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| Keywords: | composite beams relative slippage differential equations finite difference method |
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