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装配式斜交空心板桥内力的一种简化计算方法

, PP. 76-81

Keywords: 桥梁工程,装配式斜交空心板桥,有限元模型,影响面,折减系数

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Abstract:

建立了装配式斜交空心板桥的全桥空间模型,计算了相同跨径、相同板块数正交空心板桥和相应不同斜交角度斜交空心板桥桥关键截面的内力影响面。用自编影响面加载程序求得正交空心板桥和斜交空心板桥关键截面的最不利荷载内力效应值。将斜交板桥内力效应值与正交板桥内力效应值的比值定义为斜交角内力折减系数,建立了斜交空心板桥内力简化计算折减系数表。分析了斜交角度、板块梁高对折减系数的影响,提出了一种简单实用的斜交空心板桥内力计算方法供工程设计参考。

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