Determination of deflection in composite slabs considering concrete creep

Autores

  • Lorrana da Silva Nunes UFBA - Universidade Federal da Bahia
  • Rodrigo Sernizon Costa Federal University of Bahia
  • Sarah Elza Santos Bitencourt Federal University of Bahia
  • Renata Gomes Lanna da Silva Centro Federal de Educação Tecnológica de Minas Gerais (CEFET-MG)
  • Harley Francisco Viana Centro Federal de Educação Tecnológica de Minas Gerais (CEFET-MG)
  • Armando Cesar Campos Lavall Federal University of Minas Gerais

DOI:

https://doi.org/10.55592/cilamce.v6i06.8094

Palavras-chave:

Composite slab, Deflection, Concrete creep

Resumo

The analysis of the behavior and resistance of composite steel and concrete slabs covers several parameters. Among these parameters, concrete creep plays an important role in checking deflection. Regarding the calculation of the deflection, generally, technical standards recommend that the moment of inertia of the composite section be given by the simple average of the moments of inertia of the uncracked and cracked sections. However, experimental investigations have shown that this procedure, inadequately characterizes the behavior of the composite slab, resulting in an underestimated effective moment of inertia and smaller deflection, especially when subjected to higher loads. Using research results, this work aims to present a proposal for determining the effective moment of inertia in composite slabs that considers the concrete creep representing the behavior during the loading phase until collapse.

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Publicado

2024-12-02

Edição

Seção

Advanced Analysis of Steel and Steel-Concrete Composite Structures