| 钢-混凝土组合梁徐变应力分析 |
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| 引用本文： | 杨建军.钢-混凝土组合梁徐变应力分析[J].水运科技信息,2014(3):1-3. |
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| 作者姓名： | 杨建军 |
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| 作者单位： | 中铁大桥勘测设计院集团有限公司,武汉430056 |
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| 摘 要： | 钢-混凝土组合梁在长期荷载作用下，混凝土桥面板会产生徐变变形。但由于受到钢梁的约束，组合梁截面会产生应力重分布现象。基于按龄期调整的有效模量法，建立了钢-混凝土组合梁截面徐变应力重分布的增量微分方程，并通过与有限元法分析进行对比，验证了推导的增量微分方程的正确性。
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| 关 键 词： | 钢-混凝土组合梁 徐变 应力重分布 按龄期调整的有效模量法 |
Analysis of Creep Stress of Steel-concrete Composite Beam |
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| Yang Jianjun.Analysis of Creep Stress of Steel-concrete Composite Beam[J].Transportation Science & Technology,2014(3):1-3. |
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| Authors: | Yang Jianjun |
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| Institution: | Yang Jianjun (China Railway Major Bridge Reconnaissance ＆ Design Institute Co. , Ltd. , Wuhan 430056, China) |
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| Abstract: | Under long-term load,creep will occur in the concrete slab of steel-concrete composite beam.However,steel girder restrains the concrete creep,thus the stress re-distribution will happen in the composite beam.Based on Age-adjusted Effective Modulus Method,incremental differential formulas were developed to analyze the stress re-distribution in steel-concrete composite beam.And through the comparison with the finite element method,an example composite beam was used to veri-fy the correctness of the formulas proposed in this paper. |
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| Keywords: | steel-concrete composite beam creep stress re-distribution Age-adjusted Effective Mod-ulus Method |
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