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。 By using the transfer matrix method to analyze the stress and deformation of the variable cross-section porous caisson and simplifying it to a variable cross-section rigid frame, the field matrix of a variable cross-section plane rigid frame considering the axial force and the axial deformation is deduced, The transfer matrix at the branch point. Because the transfer matrix method is solved by the matrix multiplication, the accuracy is higher than the matrix displacement method.