Evaluación de la interacción suelo-estructura en el hincado de tubería con tecnología trenchless

Abstract

A parametric analysis of the soil - structure interaction is carried out in microtunnelling processes with Trenchless technology for the installation of pipes, specifically with the use of the method called Pipe Jacking (pipe jacking). The methodology used is divided into 2 main components: the geotechnical component and the structural component. As a first step, 20 geotechnical models are made based on a defined geotechnical profile (extracted from the soil study of the Bogotá D.C. metro) in order to determine the stresses and strains on the pipe considering variables such as diameter (36 in. and 72 in.), installation depth (2 m, 4 m and 8 m), material (reinforced concrete and ductile iron) and the type of ground resistance model (Mohr Coulomb and Tresca). With the stresses and strains obtained, the ballast modulus is determined in the 3 main directions and with them the structural models of the pipe are made, in a non-linear analysis, to determine the axial forces, shear forces and moments to finally do the structural design of each case.