Comportamiento sísmico de zapatas aisladas y vigas de cimentación sobre suelos blandos y rígidos utilizando el programa Midas GTS NX

Abstract

In this research project was analyzed the behavior of isolated footing and ground beams foundation to vertical loads (due to their own weight) and a seismic activity was analyzed, the ground foundations were analyzed on two types of soil: Soft and hard soil. Geotechnical studies were previously performed on two sites: The Condor, and San Patricio de Lumbisí. Based on the geotechnical data, the design of the foundations was done and the analysis of eight cases was proposed in order to study the patterns of static, seismic behavior and the effects that are generated in the foundations (rigid and flexible), Implanted in different types of soil by the GTS NX Midas software in which 3D models were made, incorporating to the ground as a deformable solid that receives the loads of the columns through the foundations. Based on the results obtained in the numerical models, it was found that in six cases: three in ground beams foundation and three in isolated footing were constant deformations which is behaving as rigid foundations independently of soft or hard soil. For flexible foundation with hard soil in ground beams foundation and isolated footing, the deformations of the foundations turned out to be variable in its length. Using the Von Mises failure criteria, the safety factor for the foundations analyzed by establishing the most critical analysis cases was obtained.