摘要
采用Duncan-Chang的E-ν非线性弹性模型对两河口心墙堆石坝进行了三维有限元应力变形计算,分析了堆石坝在填筑期及蓄水期的应力应变特性.在此基础上,研究了坝体下游次堆石分区范围变化及其部分模型参数变化、心墙底部高塑性土厚度变化及其部分参数变化对坝体应力变形、心墙拱效应和抗水力劈裂能力的影响,进一步认识了心墙堆石坝的应力应变特性.
The stress and strain of Lianghekou core rockfill dam were calculated by using of Duncan-Chang＇s E-ν nonlinear elastic model,which based on three-dimensional finite element method.The stress-strain property of dam during dam construction and impounding were studied.Based on the former study,the effects on stress-strain,core arching effect and hydraulic fracturing of the dam,which caused by not only the changes of zone size and some model＇s parameters of secondary rockfill in Lower river of the dam,but also the changes of high-plastic clay＇s thickness and model parameters,were also studied.The stress-strain property of core rockfill dam were further investigated.
出处
《福州大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第6期893-899,共7页
Journal of Fuzhou University(Natural Science Edition)
基金
水利部公益性行业科研专项资助项目(200801133)
国家自然科学基金委员会
二滩水电开发有限责任公司雅砻江水电开发联合基金资助项目(50639050)
福建省教育厅科研资助项目(JA09027)
福州大学人才引进基金资助项目(XRC0930)
关键词
土石坝
三维有限元
应力应变特性
敏感性
两河口
earth-rockfill dam
three-dimensional finite element method
stress-strain property
sensibility
Lianghekou
