| 连续刚构桥整体稳定性的理论分析和数值计算 |
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| 引用本文： | 郭锁记.连续刚构桥整体稳定性的理论分析和数值计算[J].公路交通科技,2011,28(9):107-111. |
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| 作者姓名： | 郭锁记 |
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| 作者单位： | 山西省临吉高速公路建设管理处,山西临汾,042100 |
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| 摘 要： | 针对连续变截面桥墩,应用能量法推导了失稳特征值的通用计算公式.应用有限元软件SAP2000,对一座5跨预应力连续刚构桥进行了全过程特征值稳定性分析.分析表明,3#墩最大悬臂施工状态失稳特征值最小,为桥梁的最危险状态.针对3#墩,应用通用公式计算了各个施工工况的失稳特征值,并与数值模拟值进行对比.结果显示,理论计算结果约...
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| 关 键 词： | 桥梁工程 整体稳定性 能量法 连续刚构桥 失稳特征值 |
Theoretical Analysis and Numerical Calculation of Overall Stability of Continuous Rigid Frame Bridge |
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| GUO Suoji.Theoretical Analysis and Numerical Calculation of Overall Stability of Continuous Rigid Frame Bridge[J].Journal of Highway and Transportation Research and Development,2011,28(9):107-111. |
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| Authors: | GUO Suoji |
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| Affiliation: | GUO Suoji(Shanxi Linfen-Jixian Expressway Construction Administration,Linfen Shanxi 042100,China) |
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| Abstract: | The general formula of buckling eigenvalue for continuous variable cross-section pier was deduced by energy method.Through examining the eigenvalues,the stability of a five-span prestressed continuous rigid bridge in its construction stage and completion stage was analysed by using finite element software SAP2000.The analysis reveals that the buckling eigenvalue of the 3 rd pier under maximum cantilever construction condition is minimal,which is the most dangerous stage of the bridge.The buckling eigenvalue... |
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| Keywords: | bridge engineering overall stability energy method continuous rigid frame bridge buckling eigenvalue |
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