摘要
提出正压冲固平台有限元计算模型中基础边界条件的一种简化方法 ,即将 2个水平方向的扭转自由度简化为扭转弹簧边界元 ,将其余自由度简化为固定约束 ,通过计算、分析得到不同边界约束刚度系数的取值对平台总体位移和强度校核应力的影响及变化趋势 。
Positive pressure spouted and strengthened foundation is a new type of rigid pile foundation for offshore production platform. For this type of platfo rm structure, a simplified method for foundation boundary condition is suggested in this paper. The two horizontal torsion degrees of freedoms are simplified in to torsion spring boundary elements, and the other degrees of freedom are all re stricted to zero. The influence of different stiffness coefficients of torsion s pring boundary elements on the overall displacement and stress of the platform s tructure is obtained in the analysis, and its changing trend is found. As a resu lt, it provides a great support for further analysis of this type of platform.
基金
国家高技术研究发展计划 ( 86 3计划 )经费资助( 2 0 0 1AA6 0 2 0 1 6 )
