| 薄壁箱型梁剪力滞效应分析的刚度法 |
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| 引用本文： | 谢旭,黄剑源.薄壁箱型梁剪力滞效应分析的刚度法[J].工程力学,1995,12(2):95-102. |
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| 作者姓名： | 谢旭 黄剑源 |
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| 作者单位： | 铁道部科学研究院，宁波大学 |
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| 摘 要： | 本文假定新的纵向位移函数，使位移函数能满足力学基本条件，通过变分原理建立了薄壁箱梁弯曲变形的微分方程及单元刚度系数计算公式。用本文推出的刚度法计算结果与实测及有限元法的结果进行了比较分析。该方法的优点是通用性好，计算简便。
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| 关 键 词： | 薄壁箱梁，剪力滞，变分原理，刚度法 |
STIFFNESS METHOD FOR ANALYSIS OF SHEAR LAG EFFECT ON THIN-WALLED BOX GIRDER |
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| Xie Xu, Huang Jianyuan.STIFFNESS METHOD FOR ANALYSIS OF SHEAR LAG EFFECT ON THIN-WALLED BOX GIRDER[J].Engineering Mechanics,1995,12(2):95-102. |
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| Authors: | Xie Xu Huang Jianyuan |
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| Affiliation: | Xie Xu; Huang Jianyuan(China Academy of Railway Scieace)(Ningbo University) |
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| Abstract: | A stiffness method for determining the response of shear lag effect on box girder is presented. The differential equations, based on the vriational principles,are derived by assuming a refined longitudial displacement function in equilibrium for the forces in the axial direction. The formulation of the stiffness matrix as well as the equivalent nodal forces can be used to analyze shear lag problem easily Some analytical results obtained by this method are compared with test results and theoretical values obtained by other methods.The major advantage of the present method lies in the great applicability. |
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| Keywords: | thin-walled box girder shear lag variational principle stiffness method |
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