路基不同压实度下地震动力响应分析

Analysis of Seismic Behavior of the Embankment under Different Compactness

为了了解填土路基在地震作用时的动力响应及路基提高压实度对抵抗地震破坏的效果,文章利用软件FLAC3D建立半路基模型,输入一段实测汶川地震波,模拟计算路基不同压实度在地震剪切波作用下的动力响应,以分析路肩处动力响应与路基趾部的比值随压实度增加的变化趋势,得到压实度对路基水平和竖直方向地震动力响应的影响方式。

In order to find out the seismic behavior response of the soil filled embankment and its effect of resistance seismic failure by enhancing the compactness,the FLAC3D is used to build a half-embankment model,then a section of actual Wenchuan seismic wave were input to calculate the seismic behavior of the embankment of different compactness under shear wave.The article also analyzes the change tendency of the ratio of the seismic behavior response of the road shoulder and road foundation.The influence ways of the embankment＇s seismic be - havior response at horizontal and vertical directions by compactness are obtained.