Despite recent advancements in predicting the response of shallow strip foundations during earthquake-induced liquefaction, significant modelling–related uncertainties remain, which are the focus of this paper. The problem is analysed through coupled hydromechanical analyses, employing an advanced constitutive model. The model is calibrated based only on the initial void ratio, and then validated against 6 centrifuge model tests, conducted at the University of Cambridge. Through a strict validation procedure, based on pore pressures, settlement and rotation time histories, as well as deformation mechanisms, the strengths and weaknesses of the numerical model are identified. It is shown that final settlement and rotation can be predicted with adequate accuracy, but more work is needed to achieve accurate predictions of settlement rate, maximum rotation, and pore pressures in the vicinity of the foundation. The numerical model is then used to investigate key modelling uncertainties. After revealing the sensitivity to initial soil density and to parasitic vertical acceleration, the effects of the centrifuge model container and of the distance of lateral model boundaries $\left(L\right)$ are parametrically investigated. Boundary effects are minimized with a laminar container, where a normalized boundary distance $L/D_L\ge 1$ is shown to be adequate for all liquefiable layer depths $\left(D_L\right)$ examined. The use of a rigid container is proven problematic, as it always imposes an unrealistic wave propagation pattern. The use of Duxseal inclusions offers a major advantage, allowing accurate reproduction of foundation settlement even with $L/D_L\ge 1$, a key conclusion for the design of centrifuge tests.

尽管最近在预测浅条带地基在地震引起的液化过程中的响应方面取得了进步，但是与建模有关的不确定性仍然存在，这是本文的重点。通过先进的本构模型，通过耦合流体力学分析对问题进行了分析。仅根据初始空隙率对模型进行校准，然后针对在剑桥大学进行的6次离心模型测试进行验证。通过严格的验证程序，根据孔隙压力，沉降和旋转时间历史以及变形机制，确定了数值模型的优缺点。结果表明，可以以足够的精度预测最终的沉降和旋转，但是需要更多的工作来实现沉降速率的准确预测，最大旋转和地基附近的孔隙压力。然后，将数值模型用于研究关键建模不确定性。在揭示了对初始土壤密度和寄生垂直加速度的敏感性之后，离心模型容器的影响以及模型横向边界的距离$（\mathrm{大号}）$经过参数研究。使用层状容器将边界效应最小化，其中归一化的边界距离$\mathrm{大号}/d_{\mathrm{大号}}\ge \mathrm{1个}$ 证明对于所有可液化层深度都足够 $（d_{\mathrm{大号}}）$检查。事实证明，使用刚性容器是有问题的，因为它总是会施加不切实际的波传播模式。使用Duxseal夹杂物具有一个主要优势，即使有$\mathrm{大号}/d_{\mathrm{大号}}\ge \mathrm{1个}$，是离心试验设计的重要结论。