水力发电学报2012，Vol.31Issue(2)：165-169,5.
水电站充水保压蜗壳结构仿真分析
Simulation and analysis of preloaded-filling spiral case in hydropower station
摘要
Abstract
Surface-to-surface contact nonlinear theory was applied to the contact slippage between spiral case and surrounding concrete and two axisymmetric FEM models have been developed for preloaded-filling spiral case of different cross-sectional diameters.By simulating all courses of the construction and successive pressurizing,this study focuses on three factors,deformation of steel spiral case under preloaded filling pressure,gap value between spiral case and its surrounding concrete and their stress variations.The result shows that if the diameter is large,water weight has great impact on the case deformation and the variation of gap value,while little impact on the stress variations.If the diameter is small,water weight has little impact on the three factors.Whatever the diameter large or small,consideration of the contact slippage between spiral case and its surrounding concrete is crucial to the results of three factors.关键词
水工结构/仿真分析/接触非线性/充水保压蜗壳Key words
hydraulic structure/simulation analysis/contact non-linearity/preloaded-filling spiral case分类
建筑与水利引用本文复制引用
刘波,伍鹤皋,孙海清..水电站充水保压蜗壳结构仿真分析[J].水力发电学报,2012,31(2):165-169,5.基金项目
国家自然科学基金 （）
