地震工程学报Issue(2)：446-452,459,8.DOI:10.3969/j.issn.1000-0844.2015.02.0446
插桩过程对临近平台桩基础的影响研究
Influence of Spudcan Penetration on Pile Foundations near a Platform
摘要
Abstract
Fixed offshore platforms and jack-up drilling platforms can be constructed at the same time because of the development of new jack-up vessels and construction techniques.Unfortunate-ly,a side effect may occur on the pile foundations of the fixed platform when the spudcan pene-trates nearby.It is very difficult to simulate the whole dynamic process by a finite-element meth-od.This paper primarily solves the formula of the squeezing soil effect using ball cavity expansion theory.On the basis of the analytical solution,a new pseudo-static method is proposed,which can approximately take the dynamic effect into account.It is analyzed for the bearing capacity,mises stress,and maximum horizontal displacement of pile foundations at different spudcan penetration depths based on an actual project.The simulation results are contrasted with the simple static sim-ulation method.The comparison shows that the bearing capacity is 6%~8% lower than the static simulation result,the Mises stress is 30% ~80% higher,and the maximum horizontal displace-ment is two times larger.关键词
桩靴下沉/球孔扩张理论/桩基础/拟静力法Key words
spudcan penetration/spherical cavity expansion theory/pile foundation/pseudo-static method分类
建筑与水利引用本文复制引用
郭绍曾,刘润,洪兆徽,郎瑞卿..插桩过程对临近平台桩基础的影响研究[J].地震工程学报,2015,(2):446-452,459,8.基金项目
教育部新世纪优秀人才支持计划(HCET-11-0370) （HCET-11-0370）
国家自然科学基金面上项目(51279127) （51279127）
国家自然基金优秀青年基金项目(51 322904) （51 322904）
