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
• Start date: November 01, 2019
• End date: 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)

Scientific publications

(The scientific publications listed on this page originate from the Web of Science or SciELO databases. Their authors have cited FAPESP grant or fellowship project numbers awarded to Principal Investigators or Fellowship Recipients, whether or not they are among the authors. This information is collected automatically and retrieved directly from those bibliometric databases.)

LUCAS ANTÔNIO MORAIS OLIVEIRA; TAINÁ MASCARENHAS BORGHI; YURY OURIQUES RODRIGUES; ANA LUCIA HOMCE DE CRESCE EL DEBS. . Rev. IBRACON Estrut. Mater., v. 14, n. 5, 2021-06-14. (19/03513-5)

TAINÁ MASCARENHAS BORGHI; LUCAS ANTÔNIO MORAIS OLIVEIRA; ANA LUCIA HOMCE DE CRESCE EL DEBS. . Rev. IBRACON Estrut. Mater., v. 14, n. 4, 2021-05-21. (19/03513-5)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

OLIVEIRA, Lucas Antônio Morais. Serviceability and Ultimate behaviour of unbonded post-tensioned composite slabs using steel decking and lightweight concrete. 2025. Doctoral Thesis - Universidade de São Paulo (USP). Escola de Engenharia de São Carlos (EESC/SBD) São Carlos.