The conclusion is suggested for the case of cohesionless soils preferably .

本文的结论似较适用于无粘性土层。

Cohesionless soil layers overlying the consolidating layers will also contribute to downdrag , and the negative skin resistance in these layers should be estimated using an effective stress method .

覆盖在固结土层上的无粘性土层也可产生下拉荷载，这些层上的负表面阻力应使用有效应力法进行估算。