The paper presents a comprehensive set of simulations of the cone penetration test with pore pressure measurements (CPTu test) in brittle, potentially liquefiable, soils using advanced numerical techniques. The large displacements and large deformations involved in the cone penetration problem are tackled using the Particle Finite Element Method, especially adapted for the analysis of coupled geotechnical problems (G-PFEM). A non-local regularization technique is adopted to prevent the pathological mesh dependence associated with continuum analysis of softening materials. Brittle soil behaviour is described using the CASM constitutive model. Undrained CPTu tests are simulated for a range of soils with different degree of brittleness. Effects of permeability, partial drainage and cone roughness are also explored. The results of the analyses are assessed in terms of the interpretation and classification procedures usually applied in practice. In addition, advantage is taken of the availability of a full numerical solution to explore aspects of soil response during penetration that are not possible when only global CPTu observations are available. The full set of numerical analyses have been able to capture the essential features of the problem and to provide useful insights into the effects of brittleness on the mechanisms and results of the CPTu test.

本文使用先进的数值技术，对脆性，可能液化的土壤中的孔隙压力测量（CPTu测试），提供了一套完整的锥孔渗透测试模拟。锥入问题中涉及的大位移和大变形使用粒子有限元法解决，特别适合于分析耦合岩土问题（G-PFEM）。采用非局部正则化技术来防止与软化材料的连续分析相关的病理网格依赖性。使用CASM本构模型描述了脆性土壤行为。针对一系列具有不同脆性的土壤，模拟了不排水的CPTu试验。还研究了渗透率，部分排水和锥面粗糙度的影响。分析结果是根据通常在实践中采用的解释和分类程序进行评估的。此外，利用了完整的数值解来探索渗透过程中土壤响应的各个方面，而只有全球CPTu观测值才是不可能的。全套数值分析能够捕获问题的基本特征，并提供有关脆性对CPTu测试机制和结果的影响的有用见解。