摘要
本文从理论上分析了横向载荷作用下土体与桶形基础的相互作用。根据土体的简化弹簧模型,建立了单桶和四桶结构在横向载荷作用下力系的平衡方程,提出了估算水平载荷作用下桶顶水平位移的方法,并将桶顶位移的估算结果同三维有限元方法的数值计算结果进行了比较,发现两者相当一致。文中还对胜利油田CB20B桶形平台在几种不同工况条件下的地基稳定性进行了评价。
The interaction between soil mass and bucket foundation under horizontal loads is analyzed. The equilibrium equations of forces and moments on a single and a quadruple bucket structure are formulated. The relation of lateral displacement of bucket top with horizontal loads is obtained based on a soil-spring model. The results of the bucket top displacements are compared with the three-dimensional finite element results. Good agreement is achieved. In addition, the safety and stability for the CB20B quadruple bucket foundation platform under different work situations are discussed.
出处
《工程力学》
EI
CSCD
北大核心
2004年第2期107-113,94,共8页
Engineering Mechanics
基金
国家863计划(820-10-01)项目资助
关键词
海洋工程
桶形基础
弹簧模型
地基稳定性
水平载荷
Finite element method
Foundations
Loads (forces)
Oceanography
Pressure distribution
System stability
