超深水打桩锤系统的可靠性分析与分配研究

Reliability analysis and allocation research of ultra-deep water pile hammer system

超深水打桩锤系统的性能直接影响大型海洋油气平台的建设进度。为深入研究超深水打桩锤系统的故障机理,对系统进行可靠性分析与分配研究。首先,对超深水打桩锤系统进行故障模式与影响分析(failure mode and effect analysis,FMEA),并基于FMEA结果提出了一种改进的危害性分析(criticality analysis,CA)方法。然后,运用改进的AGREE(advisory group on reliability of electronic equipment,电子设备可靠性咨询组)分配法及基于FMECA(failure mode,effect and criticality analysis,故障模式、影响与危害性分析)的可靠性分配方法,对超深水打桩锤系统的子系统和零部件依次进行可靠性分配研究。最后,在MATLAB App Designer开发环境下对超深水打桩锤系统的CA及可靠性分配过程进行可视化界面设计。结果表明,超深水打桩锤系统共有27种故障模式,钢桩等9个零部件为系统薄弱环节;经一、二次可靠性分配后,系统可靠度分别为0.99906322,0.99906327。超深水打桩锤系统的可靠性研究识别了系统的薄弱环节,为其国产化设计提供了一定的理论指导。

The performance of ultra-deep water pile hammer system directly affects the construction progress of large offshore oil and gas platforms.In order to conduct in-depth research on the failure mechanism of ultra-deep water pile hammer system,the reliability analysis and allocation research for the system was carried out.Firstly,the failure mode and effect analysis(FMEA)was conducted on the ultra-deep water pile hammer system,and an improved criticality analysis(CA)method was proposed based on the FMEA results.Then,using the improved AGREE(advisory group on reliability of electronic equipment)allocation method and reliability allocation method based on FMECA(failure mode,effect and criticality analysis),the reliability allocation research was carried out successively for subsystems and components of the ultra-deep water pile hammer system.Finally,the visual interface of the CA and reliability allocation process of ultra-deep water pile hammer system was designed in the MATLAB App Designer development environment.The results showed that there were a total of 27 failure modes in the ultra-deep water pile hammer system,and 9 components such as steel piles were weak links in the system;the system reliability after primary and secondary reliability allocation was 0.99906322 and 0.99906327,respectively.The reliability study of the ultra-deep water pile hammer system has identified the weak links of the system,which can provide certain theoretical guidance for its domestic design.