摘要
为了更好地反映高拱坝与地基体系在不同状态下的破坏过程,需同时考虑坝体和地基的损伤破坏。基于损伤力学理论,采用反映岩体变形模量不均匀分布的Weibull数值模型,建立了拱坝-地基体系损伤破坏分析的数值模型,并以锦屏一级高拱坝为例,同时考虑坝体及地基损伤,分别模拟了拱坝-地基体系在静力超载和地震作用下的损伤破坏过程。结果表明,锦屏岩基在静力超载下具有较大的安全度,而在地震作用下由于坝体-地基的动态相互作用,其损伤对拱坝体系损伤破坏过程影响较为明显。
To better reflect damage and failure process of high arch dam-foundation system,both of dam and foundation damage should be considered.Based on the damage mechanics theory,numerical model,considering the non-uniform distribution of rock material properties,has been established to analyze the breakage process of arch dam-foundation system.Taking Jinping High Arch Dam as the research case,the damage process of the arch dam-foundation system was simulated dynamically by considering both arch dam and foundation damage.The results show that the rock foundation of Jinping has great safety degree under the static overload.Under the action of earthquake,because of the dynamic interaction between dam and foundation,the impact of foundation damage on damage process of arch dam system is obvious.
出处
《水电能源科学》
北大核心
2016年第10期36-39,51,共5页
Water Resources and Power
基金
水利部公益性行业科研专项经费项目(201501034)
关键词
拱坝
地基岩体
损伤
动态相互作用
arch dam
foundation rock mass
damage
dynamic interaction
