东北石油大学学报2024，Vol.48Issue(1)：107-118,12.DOI:10.3969/j.issn.2095-4107.2024.01.010
多向荷载耦合作用下复合基础承载特性分析
Analysis of bearing behavior of composite foundation under multidirectional combined loads
摘要
Abstract
In order to study the bearing characteristics of the composite foundation of the subsea oil pro-duction system under the coupling of loads in different directions,the failure envelope under the com-posite loading mode was analyzed.The nonlinear finite element numerial simulation method was used for the simulation.The failure envelopes of foundation bearing capacity in two-dimensional and three-di-mensional load spaces were drawn by the fixed displacement ratio method,and the influence of different length-to-diameter ratios and pile spacing on the bearing capacity envelopes under the coupling of loads in different directions was analyzed.The results show that with the increase of the vertical load compo-nent,the size of the envelope of the foundation in the two-dimensional load space decreases.Combined with actual engineering application examples,by drawing the failure envelope of the foundation bearing capacity,the foundation design scheme is checked and evaluated,which is a good guide for engineering practice and design.关键词
水下石油生产系统/复合基础/多向荷载/有限元分析/承载力破坏包络线/耦合作用/承载特性Key words
subsea oil production system/composite foundation/multidirectional loads/finite element analysis/bearing capacity failure envelope/coupling effect/bearing characteristic分类
能源科技引用本文复制引用
姜瑛,亓振,曹永,王凤云,张迅,王胤..多向荷载耦合作用下复合基础承载特性分析[J].东北石油大学学报,2024,48(1):107-118,12.基金项目
辽宁省自然科学基金项目(2022-KF-18-05) （2022-KF-18-05）
