Evaluation of the limit pressure of pressuremeter tests by numerical modeling for soils in western Mexico City
Evaluation of the limit pressure of pressuremeter tests by numerical modeling for soils in western Mexico City
The pressuremeter test is a fundamental tool for in situ characterization of the stressstrain behavior of soils. However, in stiff soils of western Mexico City, the measured expansion often does not reach the failure limit, requiring estimation of the limit pressure through mathematical extrapolation of the pressurevolume curve based on available experimental data. This study evaluated the validity of the double hyperbola method by comparing it with three-dimensional simulations in Plaxis 3D, using Mohr-Coulomb and Hardening Soil constitutive models. The extrapolated limit pressure was 2.36 MPa, only 0.85% above the numerical limit pressure (2.34 MPa) obtained by extending the simulation to the limit volume at 19 m depth, confirming its accuracy for this type of soil. Other criteria, such as the inverse volume and maximum pressure methods, showed greater deviations (underestimations of 6.8% and 15.4%, respectively). This research continues with the development of a local database to strengthen limit pressure estimates in deep foundation design and considers complementing extrapolation and modeling with pressuremeter tests using higher capacity probes.
Carlos Sanchez Soto; Marco Perez; Auvinet Gabriel; Dario Armendariz; Rodrigo Rodriguez
8th International Symposium on Pressuremeters (ISP2025)
Comparative Studies and Correlations
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