水利水电技术2013，Vol.44Issue(6)：36-40,5.
基于刚体极限平衡法的反拱底板稳定性研究
Rigid body limit equilibrium method based study on stability of inverted-arch floor
摘要
Abstract
In accordance with the study on the model tests for two engineering cases of inverted-arch plunge pool,the local stability of the inverted-arch floor is quantitatively studied herein with the finite-element analysis method on the basis of the rigid body limit equilibrium method based quantitative study made on the arch abutment,and then the study on the local stability of the inverted-arch floor in relation to the thrust at the springer previously assumed is more reasonable; from which the conclusion shows that the ultimate resistance of the inverted-arch floor is larger than that of the flat one by about 1.7 to 3.3 times under the same operation conditions and the resistance of the mid-block of the floor increases along with the increase of the coefficientβ(the ratio between chord length and the radius of the inverted-arch) and the decrease of resistance from the edge block of the floor.In the same or similar cases ofβ,the ultimate resistance shows a trend of increasing along with the increase of the number of the blocks of the floor.关键词
水垫塘/反拱底板/稳定性/刚体极限平衡法Key words
plunge pool/ inverted-arch floor/ stability/ rigid body limit equilibrium method分类
建筑与水利引用本文复制引用
何小敏,杨敏,李琳,付佳伟,刘鹏..基于刚体极限平衡法的反拱底板稳定性研究[J].水利水电技术,2013,44(6):36-40,5.基金项目
国家自然科学基金面上项目资助(51179119). （51179119）
