深水立管的若干结构力学研究进展

SOME ADVANCE OF RESEARCH ON STRUCTURAL MECHANICS OF DEEPWATER RISERS

针对海洋深水立管的碰撞、疲劳、断裂失效和安全可靠性问题,评述了近5年来国内的研究成果,给出了一些用于深水立管碰撞和安全可靠性评估的实用理论和计算方法,特别是求解两根立管相互碰撞的动力响应时,介绍了新的概念——碰撞参与质量(collision partici-pating masses),通过评估参与质量,从而求解出各种响应。

The researches on the collision of the deepwater risers, assessment oI iracture, fatigue ability of risers in recent five years are reviewed. Some pratical analytical theories and numerical techniques for reliability assessment and collision between risers for deepwater risers are introduced. More attention is paid to a new concept collision participating masses when dynamic response to the collision between the risers is obtained.