王明兴，  刘庆潭
    （中南大学土木建筑学院，长沙410075）

[摘要] 利用传递矩阵法分析变截面多孔沉井的受力和变形，将其简化为变截面刚架，推导出了考虑轴力和轴向变形时变截面平面刚架结构的场矩阵，并引入分支梁在分支点的传递矩阵。由于传递矩阵法是通过矩阵连乘求解的，精度比矩阵位移法高。
[关键词] 变截面多孔沉井；传递矩阵法；受力分析；变形分析
中图分类号：TU473.2    文献标识码：A  文章编号：1002-848X(2011) S2-0406-05

Transfer matrix method of deformation analysis of variable cross-section porous caisson withstanding horizontal loads
Wang Mingxing, Liu Qingtan
( School of Civil Engineering and Architecture, Central South University, Changsha 410075, China)

Abstract: The transfer matrix method is used to analyze the force and deformation of variable cross-section porous caisson with reinforced ribs. Variable cross-section caisson was simplified to variable cross-section frame, and field matrix of variable cross-section plane frame structure considering the axial force and axial deformation was derived. Branch beam transfer matrix in the branch point was introduced. Because the transfer matrix method solves problems by matrix connected, its accuracy is higher than the matrix displacement method.
Keywords: variable cross-section porous caisson; transfer matrix method; force analysis; deformation analysis