摘要
针对Ⅲ级船闸,采用有限元方法分析闸室墙面遭受设计最大吨级船舶以最大碰撞角度和规范规定的最大航速碰撞闸墙时的内部应力分布情况,发现闸室混凝土结构采用常规的C25强度等级不足以保证闸墙表面承受碰撞时引起的压应力和拉应力。同时,依据有限元分析结果得到闸墙混凝土需要满足的各项强度指标,并且通过实际工程的现场试验研究验证了新老混凝土粘结强度指标的可靠性,为船闸工程设计和结构修复提供可靠依据。
The paper presents the finite element analysis on the stress distribution in lock wall subjected to an impact of ship with the maximum weight, impact angle and velocity. The results reveals that the C25 concrete traditionally used in lock wall can＇t carry the tensile and compressive stress at collision. Based on the FEM analysis results, various strength indices of concrete in lock wall are correspondingly suggested. The field tests in actual engineering further verify the reliability of bond strength index between new and old concrete. These proposed indices provide reliable reference for the design and repair of ship lock structure.
出处
《水运工程》
北大核心
2013年第5期120-123,共4页
Port & Waterway Engineering
基金
江苏省交通科学研究计划项目(2010Y21-1)
水利部科技推广计划项目(TG1137)
关键词
闸墙
船舶
碰撞分析
性能指标
lock wall
ship
impact analysis
property indices
