土层的剪切波速是反映土体动力特性的重要参数。
Soil shear wave velocity is an important parameter which influence the dynamic properties of soil, and it is widely used in engineering practices.
当荷载不断增大，土体进入塑性状态后，土层承压能力减弱，锚桩的影响将很小，可以忽略。
When the load is becoming larger, the soil bearing press capacity will weaken after the soil enters the plastic state, thus the effect of the anchor pile will be little, so it can be neglected.
主裂缝的总体传播方向与断层平面的夹角约等于土体在土层平均围压下的剪胀角。
The propagation angle of the principal fault rupture through soil equals the dilation angle of the soil under the mean confining pressure.
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