基于可靠性的结构优化对绞吸船定位桩应用

Reliability-based structure optimization for cutter suction dredger spud

移船倒桩系统的定位桩结构是大型绞吸挖泥船的重要结构,是绞吸挖泥船在海上作业的基础性定位设施。目前,国内外对移船倒桩结构系统的研究取得了一定的成果,但主要是静动力分析及安全评定方面。本文基于可靠性的结构优化设计研究,结合绞吸挖泥船的实际工作情况,建立了移船倒桩结构定位桩优化设计模型,确立了随机参数模型,以大型绞吸挖泥船移船倒桩结构为例进行了定位桩基于可靠性的优化设计。算例结果显示了基于可靠性的优化是合理且经济的。

The spud of moving reverse system is the important structure of super cutter suction dredger,and is the basic fixing equipment of dredging on sea.At present,some achievements have been made on the study of moving reverse system,most of which are the static dynamical analysis and safety assessment.Basing on the reliability method,and considering the actual operation environment of dredgers,this paper builds up the optimization model of the spud of moving reverse structure and the random parameters model.A super cutter suction dredger is taken as an example to carry out the reliability-based optimization design,and the result is reasonable and economical.