Generación de una herramienta informática en el software OpenSees que permita modelar el efecto de licuefacción de suelos en zonas sísmicas

Abstract

Soil liquefaction is the phenomenon that produces the reduction of the support capacity in saturated non-cohesive soils when subjected to seismic loads. Due to the complexity of its analysis, this research has developed a computing tool that allows modeling the effect of liquefaction of non-cohesive soils with seismic loads to provide facilities in its study. The computer tool has been generated in Matlab and allows the pre and post process of a numerical model which uses the open source OpenSees as a calculation engine.The results obtained include the pre-process interface for input the geometric and geotechnical information of the soil column with the seismic load, and the post-process interface to visualize the variation of displacements, accelerations, axial stress, deformations and pressure pore of the soil mass. Using the tool to model 14 proposed scenarios has been proven that the relative density of the soil and the location of the groundwater table are the variables with the highest incidence in the activation of liquefaction.