一种切力模型下大圆筒结构位移的迭代算法

AN ITERATIVE APPROACH TO THE DISPLACEMENTS OF LARGE CYLINDER BASED ON A VERTICAL SHEAR MODEL

提出一种作用于沉入式大直径圆筒内、外壁上的土体竖向切力模型．该模型假设土体的竖向剪切变形刚度系数与土中深度和筒体位移成比例，得到的求解筒体位移的平衡方程为一非线性方程组，为此建立了求解这一方程组的迭代算法，并用模型试验结果对其进行了检验．计算结果与试验结果吻合较好．

This paper presents a model of the vertical shear which acts on the soil body inside and outside a large diameter cylinder.It is assumed that the shear deformation stiffness constant is proportioanal to the depth under soil and displacement of the cylinder.The equations of equilibrium for solving the displacements are nonlinear,therefore an iterative approach to solving the equations is developed.It is verified through model tests.