面向腐蚀环境的自升式海洋平台桩腿时变可靠性研究  

Time-dependent Reliability Research of Legs of Jack-up Platform in Corrosive Environment

作　　者：苏波泳 王恒[1] 齐飞[1] 花国然[1] 马剑军 

机构地区：[1]南通大学机械工程学院,江苏南通226019 [2]上海振华重工集团(南通)传动机械有限公司,江苏南通226017

出　　处：《船舶工程》2014年第6期105-109,共5页Ship Engineering

基　　金：江苏省科技成果转化专项资金项目(BA2013099);南通市重大科技创新专项项目(XA2013001);南通市应用研究计划项目(BK2014009)

摘　　要：以某公司300ft自升式海洋平台桩腿为研究对象,根据平台的工作环境,采用Airy波理论和PM双参数谱计算平台桩腿不同工况下所受的波浪力谱,通过ANSYS有限元软件对平台进行三维建模,分析其在波浪力下的应力响应。同时考虑到腐蚀对于桩腿可靠性的影响,提出并建立在环境载荷与腐蚀耦合作用下的桩腿时变可靠性模型,根据应力响应分析结果,分析桩腿腐蚀最严重区域构件的时变可靠性变化规律,为平台桩腿在服役期间的维护与保养提供一定参考。Taking the legs of 3OOftjack-up platform as the object, according to the working environment, wave force spectrum of legs is calculated with Airy wave theory and PM spectrum. A 3D model is established with ANSYS. The stress response under different wave force spectrum is analyzed. Meanwhile, considering the impact of corrosion on the leg reliability, the time-dependent reliability modal under the load and corrosion is established According to the results of stress response analysis, variations of time-dependent reliability in the most serious area of corrosion are analyzed It offers references for maintenance of jack-up platform during service.

关 键 词：自升式海洋平台 桩腿 耦合载荷 时变可靠性 

分 类 号：P751[交通运输工程—港口、海岸及近海工程] U674.381[天文地球—海洋科学]