摘要
边坡锚固因其良好的力学性能和锚固效果而获得广泛应用。借助有限差分软件FLAC3D,对高8m、坡角60°的均质岩坡在不同峰值加速度、频率地震波作用下的动力响应进行了分析。研究表明,调整输入Kobe地震波的加速度和频率,锚固岩质边坡沿顺坡面上加速度峰值放大系数PGA非线性增大,在坡顶处达到最大值。塑性破坏区随着峰值加速度、输入地震波频率的增大而增加,锚杆轴力随相应的塑性破坏区增多而增大。
Anchoring soil slope has favorable mechanical properties and anchoring effect,which makes it be widely used.By using the finite difference soft FLAC3D,this paper analyzed the dynamic response of homogeneous rock slope with different peak acceleration and seismic wave frequency,the height and slope anchor of which is 8m and 60° respectively.The research results showed that through adjusting the different peak acceleration and frequency of Kobe wave,peak acceleration amplification factor PGA increase nonlinearly along the anchoring rock slope surface and the PGA reaches its maximum at the top of the slope.The plastic zone increases with the peak acceleration and seismic wave frequency increasing and the anchor axial force in corresponding plastic zone also increases with the plastic area increasing.
出处
《铁道建筑》
北大核心
2012年第12期107-110,共4页
Railway Engineering
基金
云南省交通厅科技项目(云交科2010(A)06-b)
关键词
边坡工程
锚固
边坡
动力响应
Slope engineering
Anchoring
Slope
Dynamic response
