自升式平台单桩极限拔桩力的研究  

Study on the Ultimate Lifting Force of Single Leg for Jack-up

作　　者：李溢涵[1] 唐友刚[1] 邵卫东[1] 张积乐[1] 邱世欣[2] 

机构地区：[1]天津大学,天津300072 [2]中国船级社实业公司天津分公司,天津300457

出　　处：《中国海洋平台》2011年第5期24-26,43,共4页China offshore Platform

摘　　要：以一座自升式平台单桩拔桩为例,研究具有三角形箱型船体的自升式平台的单桩极限拔桩力计算。简化平台模型的实际构造,应用ANSYS软件建立了三维有限元模型。通过添加抗转空间梁的方法模拟桩靴和土壤对桩腿的约束作用,建立桩腿底端的边界条件;考虑船体的水动力,通过斜坡加载方式模拟船体倾斜对浮力的影响,依据CCS规范校核船体和桩腿的强度,得到了不同拔桩力作用下的船体和桩腿强度曲践图、规范校核值曲线图,插值计算出该平台的单桩极限拔桩力。Took example of single pile lifting of a Jack-up, the ultimate single pile lifting force is studied for a Jack-up with triangular box hull. The actual structure of the platform model is simplified and the three dimensional FE model is built. The boundary conditions on lower end of the spud legs are simulated by adding anti-turning three dimensional beams, which present the restraints of spud legs from pile shoes and soil. Considering the hydrostatic of hull, the influence of tilt hull on buoyancy is simulated by applying varying force on the bottom of hull. The strength of hull and spud legs is checked according to CCS rules, the curves of max equivalent stress and ratio of stress are plotted respectively, and the ultimate lifting force of single pile is obtained by interpolation.

关 键 词：自升式平台 有限元模型 单桩极限拔桩力 

分 类 号：U674.381[交通运输工程—船舶及航道工程]