摘要
结合工程实例建立了拱坝的整体有限元模型，基于ANSYS子模型法对泄水底孔进行了三维有限元分析，研究了孔口的应力分布规律及悬臂对孔口应力的影响。研究表明，采用子模型法不仅大大降低了网格剖分的难度，而且减少了计算分析时间；悬臂结构对悬臂与坝体交接处孔口侧壁应力影响较大。
In this paper the 3D finite element model of arch dam is built with combination to an engineering case, and three- dimensional finite analysis of bottom orifice is presented by sub modeling techniques of ANSYS. The orifice stress distribution and the influence on orifice stress caused by cantilever are also studied. It is shown that the problem of meshing is solved and computing time is reduced by using sub modeling method. The stress of orifice sidewall at the intersection of cantilever and dam body is greatly influenced by cantilever structures, which is helpful to design of cantilever structures.
作者
平巍巍
PING Wei-wei （Changzhou hydropower development company, Guangxi Wuzhou 543000, China）
关键词
高拱坝
子模型
三维有限元
孔口
悬臂
high arch dam
sub-modeling
3D FEM
orifice
cantilever
