Abstract Liquefaction effects predicted by implementing two well-known constitutive models for sandy soils are compared; i.e., the Hypoplastic soil model (HPS) and the UBCSAND model. To numerically simulate dynamic loading, the Convected Particle Domain Interpolation (CPDI) method, an advanced Material Point Method (MPM), is employed within a multi-phase framework. The numerical results from the UBCSAND model are compared against published experimental data. A comparison between the performance of UBCSAND and HPS model is presented by calibrating the former’s constitutive behaviour for Berlin sand to that of the HPS model. The shake table test performed at Rensselaer Polytechnic Institute is numerically simulated and results are compared against the published experimental data. Good agreement between the experiment and the numerical calculation is obtained. Thereafter, models are employed to numerically simulate a driven pile installation. The results from both models are compared against published experimental data. The multi-phase CPDI formulation is shown to be capable of reproducing liquefaction for the the pile driving example.

中文翻译：

---

使用材料点法比较 UBCSAND 和 Hypoplastic 土壤模型预测

摘要 比较了两种众所周知的砂土本构模型预测的液化效果；即， Hypoplastic 土壤模型 (HPS) 和 UBCSAND 模型。为了对动态载荷进行数值模拟，在多相框架内采用了对流粒子域插值 (CPDI) 方法，这是一种先进的材料点方法 (MPM)。UBCSAND 模型的数值结果与已发表的实验数据进行了比较。UBCSAND 和 HPS 模型的性能比较通过将前者的柏林砂本构行为校准为 HPS 模型的本构行为来呈现。在 Rensselaer Polytechnic Institute 进行的振动台试验进行了数值模拟，并将结果与​​已发表的实验数据进行了比较。得到了实验和数值计算之间的良好一致性。此后，使用模型对打入桩装置进行数值模拟。将两种模型的结果与已发表的实验数据进行比较。多相 CPDI 配方显示能够再现打桩示例的液化。