论文部分内容阅读
针对软黏土地基上吸力式桶形基础的扭剪承载力特性,在大型通用有限元分析软件ABAQUS平台上,确定了吸力式桶形基础在扭剪荷载极限状态时的破坏机理,给出了吸力式桶形基础在扭剪荷载作用下的数学表达式.计算结果表明:桶形基础在扭剪荷载作用下,距离桶体越近的区域塑性应变相对较为显著;桶体两侧与地基土接触区域塑性应变较大.给出的扭剪荷载计算公式可以近似地表达桶形基础扭剪荷载力的大小.桶形基础所承受的扭剪荷载极限承载力系数随着长径比L/D的增大而增加.
Aiming at the torsional shear capacity of suction bucket foundation on soft clay foundation, the failure mechanism of suction bucket foundation under torsional shear load limit state is determined on ABAQUS platform, and the suction The mathematical expression of the bucket foundation under torsional shear loading shows that the plastic deformation of the bucket foundation is more obvious under the torsional shear loading and the closer to the bucket, The plastic deformation of the region is large.The torsion shear load formula given can approximate the size of the buckling load on the bucket foundation.The ultimate load bearing capacity coefficient of torsional shear load borne by the bucket foundation increases with the aspect ratio L / D Increase and increase.