摘要
本文采用有限元方法,对二滩拱坝坝体及其基岩弹性模量进行反馈分析。反馈分析中主要以二滩拱坝的垂线观测资料作为比较对象,通过不断调整坝体混凝土各个分区以及地基不同类型岩石的弹模取值,使有限元模型计算的坝体位移与实测位移尽可能接近,得到了一组合理的坝体和基岩弹模参数,并对坝体变位分布规律进行了分析。
In this paper, feedback analysis of material parameters of Ertan arch dam and its foundation rock is carried out by using the finite element method. The dam displacement data measured by the plumb lines are used as the comparing object in the analysis. Based on the designed material parameters, the elastic moduli of dam concretes and foundation rocks are adjusted to make the errors between the numerical displacements obtained by FEM and the actual displacements measured by the plumb lines become as small as possible. Finally, the elastic moduli with the smallest displacement errors are viewed as the actual material parameters and then the regularity of displacements of the dam is analyzed.
出处
《水力发电学报》
EI
CSCD
北大核心
2008年第2期78-83,共6页
Journal of Hydroelectric Engineering
基金
国家自然科学基金委员会和二滩水电开发有限责任公司雅砻江水电开发联合研究基金项目(50539020)
关键词
水工结构
弹性模量
反馈分析
二滩拱坝
垂线观测资料
hydraulic structure
elastic modulus
feedback analysis
Ertan arch dam
plumb line
