摘要
基于结构动力学分析理论,对满库工况下某尾矿坝在地震荷载作用下动力特性进行计算分析。首先建立了三维有限元模型,然后采用有限单元法获得了前3阶振型自振频率、结构位移和应力、X向和Z向速度与加速度时程等动力响应。分析表明,在加载过程中,尾矿库区的形变状态、速度、加速度水平均处于较高状态,需要采取相应措施,防止动载破坏发生。
Based on the dynamics theory,the dynamic properties of a tailings dam during the whole earthquake loading process is calculated and analyzed in this paper.A 3D finite element model is firstly built.Then the first3 self-vibration frequency are gotten.At last,the dynamic response,such as the displacement, the stress,the velocity and acceleration in the x direction and the z direction,are calculated.The analysis shows that the corresponding methods should be taken and the emergency treatment scheme should be worked out.
出处
《吉林水利》
2018年第3期19-21,共3页
Jilin Water Resources
关键词
尾矿坝
地震
自振频率
动力响应
Tailings dam
Earthquake
Self-vibration Frequency
Dynamic Response
