The objective of this article is to present the results obtained in a study on the interaction between the behavior of the structure and the foundation settlements and verify the influence of normal load distribution on the columns. In this mechanism, known as structure soil interaction (SSI), as the building is constructed, a transfer of loads occurs from the columns which tend to settle more to those that tend to settle less. The study was conducted in a building which had its settlements monitored from the beginning of construction. For this purpose, a linear tridimensional numerical model was constructed and numerical analysis was performed, using the finite elements method. In these analyses, numerical models corresponding to the execution of each floor were used, considering the settlements measured in each stage of the construction. The results of analyses showed that the effect of SSI are significant for calculating the normal efforts on the columns, particularly on those located in the first floors.Keywords: structure soil interaction, settlements, reinforced concrete O objetivo deste artigo é o de apresentar os resultados obtidos do estudo da interação entre o comportamento da estrutura e os recalques de fundação e verificar a sua influência na redistribuição de esforços normais nos pilares. Neste mecanismo, conhecido como interação solo estrutura (ISE), a medida que a edificação é construída, ocorre uma transferência de cargas dos pilares que tendem a recalcar mais para aqueles que tendem a recalcar menos. O estudo foi conduzido em um edifício que teve seus recalques monitorados desde o início da construção. Para se alcançar este objetivo, foi construído um modelo numérico linear tridimensional e foi realizada uma análise numérica pelo método dos elementos finitos. Nestas análises, modelos numéricos correspondentes a conclusão de cada andar foi utilizado em conjunto com os recalques medidos para cada etapa da construção. Os resultados das análises motraram que os efeitos da ISE são significantes para o cálculo dos esforços normais nos pilares, particularmente para aqueles localizados nos primeiros andares.Palavras-chave: interação solo-estrutura, recalques, concreto armado.
Influence of Foundation Settlements in Load Redistribution on Columns in a Monitoring
Abstract ResumoVolume 3, Number 3 (September, 2010) p. 346 -356 • ISSN 1983-4195 © 2010 IBRACON the constructor's concern with cost reduction and also due to the lack of a culture of settlement monitoring. Nevertheless, monitoring building during construction, observing the behavior of the foundations as they are being loaded, in addition to serving as a certification of quality of the projects and execution of the construction, they are a great contribution to the study of the mechanism of interaction between the structure and soil.
JustificationThis study is justified due to the few reports on the observation of behavior of engineering constructions on a natural scale, especially buildings, during the construction process. According to GUSMÃ...