摘要
基于梁一柱理论、理想弹塑性假设、平断面假设和塑性铰理论建立了拉伸和压缩加筋板单元的标准应力一应变关系曲线,采用简化逐步破坏分析法计算了平台浮体和平台整体的极限强度;同时针对平台立柱与支撑相交的管节点容易破坏的特点,运用有限元软件对典型的管节点进行极限分析,为下一步平台安全评估提供依据。
The stress-strain relationship of structural element is established by applying beam-column theory, elastoplastic assumption, and plastic joint theory. A simplified progressive collapse analysis method is introduced to calculate the ultimate strength of pontoon and the whole platform. Because the important tubular joints, the intersections of column and brace of the platform, are easy to collapse, the ultimate analysis of the tubular joints with the finite element software is introduced in the second part of this thesis. It offers a reliable reference for the security assessment of the platform structure.
出处
《中国海洋平台》
2005年第3期19-22,共4页
China offshore Platform
关键词
半潜式平台
极限强度
极限弯矩
管节点
semisubmersible platform
ultimate strength
ultimate bending momen
tubular joints.
