粉土层液化可能性判断的地震反应分析法

Assessment of liquefaction potential of silt layer using seismic response analysis method

通过对上海粉土层的有效应力地震反应分析,对粉土层的液化势进行了预测。当从50m深度输入唐山地震波时,在地面加速度峰值为0 1g条件下,粉土层不会发生液化;在0 15g和0 2g条件下,粉土层有液化的可能性。当从280m输入唐山地震波时,在0 1g、0 15g和0 2g条件下,粉土层均不会发生液化。

The authors predicted liquefaction potentials of silt in Shanghai area by employing the seismic response analysis with effective stress method. If the Tangshan seismic wave was input at the depth of 50m below the ground level, the silt would not liquefy under the case of ground acceleration peak value of 01g and would potentially liquefy under the cases of ground acceleration peak values of 015g and 02g. If the Tangshan seismic wave was input at the depth of 280m below the ground level, the silt would not liquefy under the three cases above.