摘要
合理确定闸首结构的内力是保证船闸结构系统稳定和安全的关键,也是闸首混凝土配筋设计的重要依据。使用ABAQUS有限元分析软件,建立某大型船闸下闸首三维有限元计算模型,分析了不同工况下闸首的应力分布规律及变形特点。编制了由应力反求内力的计算程序,得到各控制点的内力分布情况,并与规范算法结果进行对比,结果表明:规范算法偏于安全,有限单元法充分考虑了位移的协调和结构变形的整体性,计算出的内力更加符合大型船闸闸首实际受力情况。
It is the key to determine reasonably the internal forces of the lock head for guaranteeing the system stability and safety lock structure, and it＇s an important basis for the reinforcement design as well. The large- scale finite element analysis softeware ABAQUS is used to develop a three-dimensional finite element model of the lock head in a ship lock and the simulation scale of foundation. The model can be used to analyze the stress distribution and deformation characteristics under different working conditions. We compile the calculation procedure to get the internal force by the stress, and achieve the internal force distribution of each control point, which is compared with that by the standard algorithm. The results show that the canonical algorithm is conservative, while the finite element method considering the overall deformation and displacement, internal force calculation of large lock head is more consistent with the actual stress.
出处
《水运工程》
北大核心
2014年第5期112-116,共5页
Port & Waterway Engineering
关键词
闸首
三维有限元
应力
变形
lock head
finite element method
stress
deformation
作者简介
苏超（1960-）,男,博士,教授,从事水工结构工程、水运工程数值计算方法与试验研究.
