摘要
介绍了海上升压站平台结构极限强度分析方法的原理及判断结构整体安全裕度的指标。并以某海上升压站导管架平台结构为例,利用海洋工程专业结构分析软件SACS建立三维有限元模型,考虑桩-土的非线性相互作用影响,采用逐步增加环境荷载的方式,进行了结构全过程非线性倒塌分析。分析得到结构的强度储备系数,可以定量地评估结构的安全裕度,为极端环境荷载作用下海上升压站平台结构设计提供理论支撑。
The method of ultimate strength analysis and the index of evaluating the security performance of the offshore substation platform structure were presented in this paper.Taking the jacket platform structure as an example,a threedimensional finite element model was established using SACS ocean engineering analysis software,based on the stepby-step loading method,the nonlinear collapse analysis for the jacket offshore platform was performed under extreme marine environment,considering the nonlinear interaction between soil and piles.The reserve strength coefficient of the jacket are obtained,which can quantitatively confirm the safety margin of the structure and provide theoretical support for the structural design of offshore substation platform under extreme environmental loads.
作者
廖君
LIAO Jun(Shanghai Investigation,Design&Research Institute Co.,Ltd.,Shanghai 200335,China)
出处
《建筑结构》
CSCD
北大核心
2020年第S01期230-233,共4页
Building Structure
关键词
海上升压站
极限强度
强度储备系数
倒塌分析
offshore substation platform
ultimate strength
ration of reserve strength
collapse analysis
作者简介
廖君,硕士,一级注册结构工程师,Email:273271710@qq.com。
