考虑剪力滞效应的层合箱梁矩阵分析方法

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基金项目: 国家自然科学基金资助项目(50378043);兰州交通大学'青蓝’人才工程基金资助

MATRIX ANALYSIS METHOD OF COMPOSITE LAMINATED BOX BEAMS WITH CONSIDERATION OF SHEAR LAG EFFECT

1.
School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China;
2.
State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China

摘要: 给出了考虑剪力滞后及剪切变形效应条件下,复合材料薄壁层合箱梁静力行为控制微分方程组的初参数解。以此为基础,推导出了层合箱梁单元的刚度矩阵和等效结点荷载列阵,从而使薄壁层合箱梁的剪力滞、剪切变形效应分析方便地纳入了工程中广泛应用的矩阵位移法程序系统,为复合材料连续层合箱梁等复杂结构的强度及刚度分析提供了有效的计算手段。
- 复合材料 /
- 层合箱梁 /
- 剪力滞后 /
- 剪切变形 /
- 矩阵位移法
Abstract: This paper presents an initial value solution of static equilibrium differential equations of the thin-walled composite laminated box beams considering both shear lag and shear deformation, which is used to establish the related element stiffness matrix and equivalent nodal forces vector. The analysis of the thin-walled composite laminated box beams is admitted into the program system of the matrix-displacement method.The present procedure can be used to analyze effectively the mechanical behaviors of some complex composite structures, such as continuous laminated box girders or laminated box beams with varying cross section, etc.
- composite /
- laminated box beams /
- shear lag and shear deformation /
- matrix-displacement method /