摘要
主要采用弹性理论分析方法并辅以有限元数值模拟方法,分析Hardfill坝建基面上以及坝基内部的应力状况,探明坝基的应力分布规律,求出地基内附加应力大小及分布的解析解,确定Hardfill坝对地基承载力的要求.利用有限元和数值方法拟合出基底压力大小分布,以基底压力来等效坝体对地基的作用,进一步求出对应的附加应力解析公式.解析公式中设置了几个参数使其适用于不同的筑坝材料和地基岩体,以及不同坝高情况的应力计算.研究结果虽然来自Hardfill坝但也适用于其他基底压力为曲线形的建筑物地基附加应力求解.
The elastic theory combined with finite element numerical simulation is used to analyze the surface and internal stresses of the foundation of Hardfill dam. The stress distribution of the dam foundation is proved up and the analytical solutions are obtained. Distributions of foundational stress are exported by finite element software and fitted accurately with equations. Then, the effects of dam can be replaced by these loads. The analytical solutions of additional stress can be achieved by integrating the foundational pressure equations; and the solutions can are suitable for different dam materials, bedrocks and heights by setting some parameters. The analytical solutions can also apply to other constructions that have curved foundation pressure to solve the additional stress.
出处
《武汉大学学报（工学版）》
CAS
CSCD
北大核心
2009年第2期191-195,247,共6页
Engineering Journal of Wuhan University
基金
国家自然科学基金资助项目(编号:50679058)
