A Structural Reliability Analysis for the Differential Settlement of a Multi-Storey Building with Shallow Foundation
Mauricio Rogerio Ramos Ribeiro1; Valério Silva Almeida1; Hélio Luiz Simonetti2
1 School of Engineering of the University of São Paulo (EPUSP); 2 Federal Institute of Minas Gerais (IFMG)
doi:10.20906/CPS/CILAMCE2017-0101
Resumo
This work is based on the reliability analysis for the differential settlements from a multi-storey building, with the FOSM (First Order Second Moment) method applied in conjunction with FE (Finite Elements) method that evaluates the efforts and settlements of the building. The FOSM method contains gradient vectors and is based on optimization iterative procedure, and the ultimate state function depends on the FEM results, what makes an the direct differentiation not possible for the function analysis. To do it so, the FD (Finite Difference) method is formulated in the FOSM algorithm to obtain the gradient vector and the optimization as well. Once it has the reliability results, it is possible to discuss about the probability of failure, when applied the variability of the parameters from the soil described in the literature commonly used in foundation designs.
Palavras-chave: Reliability; FOSM (First Order Second Moment); Soil-Structure Interaction; Finite Difference Method