基于拱梁分载法变形假定的拱坝有限元分析探讨  

Study on Finite Element Analysis of Arch Dam by Deformation Assumptions Based on of Arch-beam Load-distributed Method

作　　者：朱方剑[1] 刘国华[1] 苏项庭[1] 谢中凯[1] 

机构地区：[1]浙江大学水工结构与水环境研究所,浙江杭州310058

出　　处：《城市道桥与防洪》2011年第4期166-170,5+4,共5页Urban Roads Bridges & Flood Control

基　　金：国家自然科学基金资助项目(50579081)

摘　　要：该文提出了一种基于拱梁分载法变形假定的拱坝有限元分析方法。利用大型通用软件ANSYS,在坝体径向纤维各结点处引入位移约束方程,进行基于径向纤维直线假定的典型拱坝三维有限元分析。研究表明,该方法的分析成果与拱梁分载法的成果十分吻合,有效地解决了有限元计算的应力集中难题;同时该方法对坝体网格划分的敏感性较小,具有一定的参考价值。This paper presents a finite element analysis method of arch dam by the deformation assumptions based on the arch-beam load-distributed method.The displacement constraint equation is introduced into every crunode of radial fiber of the dam by using the large common software ANSYS and the typical 3D finite element analysis of arch dam is done based on the radial fiber straight line assumption.The study shows that the analysis result of this method is very consistent with the result of the arch-beam load-distributed method,which efficiently solves the stress concentration problem by the finite element calculation.At the same time,this method is less sensitive to the division of the dam grids,and has some referring values.

关 键 词：拱梁分载法 径向纤维直线假定 有限元法 

分 类 号：TV624.46[水利工程—水利水电工程]