摘要
弧形自浮式防撞设施能够有效解决大水差拱形桥梁的防船撞问题,其运行可靠性关系到防撞设施日常运行的灵活与稳妥,对其进行研究尤为必要。采用性能可靠性评估模型评价防撞设施运行的可靠性,将可靠性量化为防撞设施随水位变化自适应浮动的驱动力值大于浮筒阻力值的概率。为了提高试验的效率,采用强化试验原理,对试验方案进行了优化设计。建立了弧形自浮式防撞设施机构模型,并在防撞带与浮筒连接部布置多个应变测量单元,监测防撞设施随水位自适应浮动过程中的应变变化。强化试验条件下,共进行了25个往复升降试验,结果表明25次试验中均未出应变输出结果异常的现象,说明在25次试验中未出现一次浮筒卡住的情况,证明所设计的防撞设施结构运行可靠度达到设计要求。
The operation reliability of arc-type ship＇s anti-collision facility directly relates to daily operational flexibility and security, so it is of great significance to study it. The operation reliability is quantified to the possibility that driving force is bigger than the resistance with the performance reliability evaluation model. In order to improve the test efficiency, the test program is optimized by the enhanced test model. The mechanism model is established, and four strain measurement units are laid on the junction between collision belt and buoy. The mechanism model test results show that, under the condition of strengthened test, no abnormal output occurs in 25 test cycles and the buoy stuck didn＇t appear in 25 test cycles. It proves that the design of the facilities meets the reliability requirements.
出处
《水运工程》
北大核心
2013年第1期66-70,共5页
Port & Waterway Engineering
基金
西部交通建设科技项目(2011318350990)
关键词
弧形自浮式防撞设施
可靠性
强化试验
机构模型
arc-type ship＇s anti-collision facility
reliability
enhanced test
mechanism model
