灾害学2026，Vol.41Issue(2)：23-29,7.DOI:10.3969/j.issn.1000-811X.2026.02.003
考虑失效概率的漂浮物作用下桥梁防船撞设施可靠性研究
Reliability Study of Bridge Anti-ship Collision Facilities under the Action of Floating Objects Considering Failure Probability
摘要
Abstract
To reduce the failure risk of bridge anti-ship collision facilities in the Three Gorges Reservoir area under the action of cluster floating objects,a structural reliability method under the impact and accumulation load of floating ob-jects is established based on the resistance-load theory.Taking Wanzhou Yangtze River Highway Bridge as an example,the key fatigue hotspots of anti-collision facilities are identified by finite element simulation.According to the random pa-rameters such as mass and velocity of floating objects,the failure probability is calculated by Monte Carlo method,and the reliability index of anti-collision facilities is quantified.The results show that the failure probabilities of hotspots 1 and 2 are 8.98％ and 4.2％,respectively,which exceed the specification threshold(2.5％).The reliability indexes of hot-spots 1 and 2 are 1.34 and 1.73,respectively,which are lower than the specification threshold(2.91).The failure proba-bility of hotspot 3 is 0.18％,and the reliability index is 2.91,which basically meets the safety requirements.The failure probability of hotspot 4 is 1.07％,and the reliability index is 2.30.Therefore,the anti-collision belts in the range of hot-spots 1,2 and 4 need to be reinforced or cleaned in time.关键词
漂浮物/防撞设施/失效概率/可靠性分析/蒙特卡洛法Key words
floating objects/anti-collision facilities/failure probability/reliability analysis/Monte Carlo method分类
资源环境引用本文复制引用
冯玉涛,王伟桥,何雨韩,万鹏,唐文志..考虑失效概率的漂浮物作用下桥梁防船撞设施可靠性研究[J].灾害学,2026,41(2):23-29,7.基金项目
重庆市交通科技项目"大水头差条件下防撞导向井沉井及其稳定性研究"(2017KJ014) （2017KJ014）
重庆市研究生导师团队建设项目"山区河流桥梁防撞风险评价与防撞装置研发"(JDDSTD2022009) （JDDSTD2022009）
