Interpretation of the pressuremeter test using numerical models based on deformation tensor equations

Abstract

The pressuremeter test in boreholes has proven itself as a useful tool in geotechnical explorations, especially comparing its results with those obtained from a mathematical model ruled by a soil representative constitutive equation. The numerical model shown in this paper is aimed to be the reference framework for the interpretation of this test. The model analyses variables such as: the type of response, the initial state, the drainage regime and the constitutive equations. It is a model of finite elements able to work with a mesh without deformation or one adapted to it.

Chemical Injections Realized with Null Pressure for Underpinning the Foundation of an 18th Century Building Located in the Historical City of Cuenca (Spain)

“…Consistent with the above, it can be concluded that after injecting expanding polyurethane resin the volume of treated soil does not modify the rigidity or distribution of force under the treated area [9]. In other words, there is no creation of "hard points" in the soil and the procedure for injecting resin can be considered suitable for partial or localized treatment [10].…”

Strategies on Reuse of Clayey Expansive Soils as Embankment Material in Urban Development Areas: A Case Study in New Urbanized Zones

“…There is no energy in the middle of the basin, and water stagnates to flood a large area which gives rise to a lacustrine environment where chemical precipitation is abundant. In principle, this very simple and classical outline allows for the establishment of spatial distribution of the different geological formations, which, due to their syngeneic characteristics, occupy very specific positions in the river basin [9]. As will be seen, these geological formations will have key geotechnical repercussions.…”

“…These sediments are articulated in a varied range of sequences, a reflection of the great variety of deposition environments, separated from the underlying gypsum deposits by a paleokarstick surface [10]. The thickness of the clay deposits once reached several dozens of meters above the current land surface, although later, erosion processes created the current thickness of these In principle, this very simple and classical outline allows for the establishment of spatial distribution of the different geological formations, which, due to their syngeneic characteristics, occupy very specific positions in the river basin [9]. As will be seen, these geological formations will have key geotechnical repercussions.…”

Underpinning of shallow foundations by expansive polyurethane resin injections. Case study: Cardinal Diego de Espinosa Palace in Segovia (Spain)

“…However, in any of the factors listed above, the action to be taken should be designed so that the soil-structure interaction is able to adapt to new tension scenario (Escolano Sánchez, Bueno Aguado, & Lavín, 2014). This adaptation can be achieved by underpinning the foundation using a technique that injects expanding polyurethane resin into the supporting soil in order to consolidate and enhance its mechanical properties, which is precisely the case that is described in this article.…”