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Serviceability and ultimate behaviour of continuous prestressed composite slabs of steel decking and lightweight concrete

Grant number: 19/03513-5
Support Opportunities:Scholarships in Brazil - Doctorate
Effective date (Start): November 01, 2019
Effective date (End): July 21, 2022
Field of knowledge:Engineering - Civil Engineering - Structural Engineering
Principal Investigator:Ana Lucia Homce de Cresce El Debs
Grantee:Lucas Antônio Morais Oliveira
Host Institution: Escola de Engenharia de São Carlos (EESC). Universidade de São Paulo (USP). São Carlos , SP, Brazil

Abstract

This project proposes to investigate the time-dependent serviceability behavior and ultimate capacity of continuous prestressed composite slabs with steel decking and lightweight concrete. This solution combines the benefits of composite constructions and the possibility ofreaching large spans associated to prestressed systems. Incorporating the use of lightweightconcrete to the system, the weight of the slabs is reduced, enhancing their structural capacity. In this proposal, emphasis is given to the serviceability behavior (time-dependent deflections and cracking), highlighting the losses of prestressing forces, stress redistribution and evaluation of deflection due creep and non-uniform shrinkage in prestressed composite floor slabs. In addition, the contribution of the steel decking and prestressing will be evaluated in the resistant capacity of the system with continuity on the intermediate supports, considering the longitudinal shear and bending failures modes. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
LUCAS ANTÔNIO MORAIS OLIVEIRA; TAINÁ MASCARENHAS BORGHI; YURY OURIQUES RODRIGUES; ANA LUCIA HOMCE DE CRESCE EL DEBS. Avaliação dos códigos de projeto para o comportamento em serviço de lajes mistas de aço-concreto. Rev. IBRACON Estrut. Mater., v. 14, n. 5, . (19/03513-5)
TAINÁ MASCARENHAS BORGHI; LUCAS ANTÔNIO MORAIS OLIVEIRA; ANA LUCIA HOMCE DE CRESCE EL DEBS. Investigação numérica sobre slim floors: análise comparativa das tipologias ASB e CoSFB. Rev. IBRACON Estrut. Mater., v. 14, n. 4, . (19/03513-5)

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