Abstract

FERNANDEZ-SOLA, Luciano Roberto; HERNANDEZ-RODRIGUEZ, Luis Fernando; LOEZA-PEREZ, Carlos Ezequiel  and  GONZALEZ-CUEVAS, Oscar Manuel. Design actions over foundations of reinforced concrete buildings with inelastic behavior. Ing. sísm [online]. 2020, n.spe104, pp.32-50.  Epub Mar 10, 2021. ISSN 0185-092X.  https://doi.org/10.18867/ris.104.539.

The capacity of the structures to develop inelastic behavior is a fundamental property. Ensure the stability of the structure along all its inelastic behavior it’s the most important issue on earthquake structural design, in order to provide the necessary inelastic capacity. The foundation must be able to transmit the forces produced on the superstructure up to the systems maximum inelastic displacement. In this paper, an analysis of the maximum forces produced by the superstructure over the foundation while developing all its inelastic capacity is presented. Push over analysis is used as reference method and only reinforced concrete frames are studied. Alternative simplified procedures are proposed to avoid the necessity of non-linear analysis. It is shown that maximum forces introduced to foundation by the superstructure are associated with the structures overstrength ratio.

Keywords : capacity design; foundation design; inelastic behavior.