海上平台桶基沉贯渗流场的有限元法数值模拟  

FINITE ELEMENT METHOD OF SEEPAGE FIELD IN THE PROCESS OF OFFSHORE BUCKET FOUNDATION PLATFORM PENETRATION

作　　者：杨树耕[1] 梁子冀[1] 任贵永[1] 孙东昌[2] 张士华[2] 徐松森[2] 

机构地区：[1]天津大学 [2]胜利石油管理局钻井工艺研究院

出　　处：《海岸工程》1999年第1期7-10,共4页Coastal Engineering

摘　　要：桶形基础平台是一种新型的海洋平台，这种型式的平台与传统的导管架式平台的主要区别在于采用桶形基础代替打入桩基础，桶形基础的负压沉贯过程是一个复杂的水动力过程，其关键在于主动施加的桶内外压力差产生渗流场，渗流场的形成与发展对于负压沉贯有决定性的影响。本文用有限元分析方法对桶形基础负压沉贯渗流场进行动态模拟，建立了桶形基础负压沉贯过程中渗流场的有限元分析模型，模型试验的结果与按有限元分析计算模型得到的计算结果的比较表明了计算模型的可靠性和工程实用性。The offshore platform with bucket foundations is a new type of offshore platform that is different from traditional template platforms by replacing driven piles with bucket foundations The suction penetration of bucket foundation is a complicated hydrodynamic process The key of this process is the seepage field caused by the difference of pressure applied on purpose inside and outside the bucket, The appearance and development of seepage field has a decisive influence on the suciton penetration process In this study, the finite element analysis method is utilized to the dynamic simulation of the seepage field of suction penetration of bucket foundation platform A model of finite element analysis is suggested to solve this seepage field The reliability of the model and its applicability to engineering have been proved by comparison between the results of model test and finite element calculation model

关 键 词：桶形基础 有限元法 海上平台 渗流场 数值模拟 

分 类 号：U674.381[交通运输工程—船舶及航道工程] TE951.01[交通运输工程—船舶与海洋工程]