MÉTODOS DE PROJETO PARA PILARES MISTOS CURTOS CIRCULARES PREENCHIDOS COM CONCRETO RECICLADO SUJEITOS A CARGA AXIAL CENTRADA

Maicon  Arcine; Ricardo  Carrazedo; Silvana  De Nardin

doi:10.4025/revtecnol.v33i1.72532

Maicon Arcine Universidade Federal de São Carlos
Ricardo Carrazedo Universidade de São Paulo/ Escola de Engenharia de São Carlos https://orcid.org/0000-0002-9830-7777
Silvana De Nardin Universidade Federal de São Carlos https://orcid.org/0000-0002-8736-4987

DOI: https://doi.org/10.4025/revtecnol.v33i1.72532

Keywords: Composite column, Recycled concrete, Axial capacity, Design, Confinement

Abstract

The confinement of Recycled Aggregate Concrete (RAC) has become an interesting alternative for its application in structures due to its greater deformability and lower resistance. Recycled Aggregate Concrete-Filled Steel Tube (RACFST) is an economical alternative to Concrete-Filled Steel Tube (CFST), in addition to reducing environmental impact and consumption of natural resources. However, the existing recommendations refer to CFST columns, while there is currently only one design standard for RACFST columns. The aim of this study is to determine the applicability of standards and methods from the literature in RACFST column design. For this, seven standards for CFST, one for RACFST and four methods from the literature for RACFST were tested on 97 experimental results of short RACFST columns. All standards were found to be efficient in calculating the load-bearing of RACFST columns, with the RAC compressive strength being the main parameter differentiating the methods. The confinement effect is taken into account in the methods in different ways, which also affects the load-bearing capacity of the RACFST columns.

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Author Biographies

Ricardo Carrazedo, Universidade de São Paulo/ Escola de Engenharia de São Carlos

Engenheiro Civil pela Universidade Estadual do Oeste do Paraná (2000), mestre em Engenharia Civil (Engenharia de Estruturas) pela Universidade de São Paulo (2002) e doutor em Engenharia Civil (Engenharia de Estruturas) pela Universidade de São Paulo (2005). É atualmente Professor Associado e Coordenador do Programa de Pós Graduação do Departamento de Engenharia de Estruturas da Escola de Engenharia de São Carlos / Universidade de São Paulo. Atua principalmente nos temas: estruturas de concreto armado, concretos especiais, reforço de estruturas, fenômenos vibro-acústicos em estruturas, monitoramento estrutural, ensaios não destrutivos e estruturas sob ação de cargas móveis.

Silvana De Nardin, Universidade Federal de São Carlos

Possui graduação em engenharia civil pela Universidade Estadual de Maringá(1996), mestrado em Engenharia Civil (Engenharia de Estruturas) pela Universidade de São Paulo(1999), doutorado em Engenharia Civil (Engenharia de Estruturas) pela Universidade de São Paulo(2003) e pós-doutorado pela Universidade de São Paulo(2007). Atualmente é Professor Adjunto da Universidade Federal de São Carlos, da Purdue University, Revisor de projeto de fomento do Fundação de Amparo à Pesquisa do Estado de São Paulo, Revisor de periódico da RIEM ? Ibracon Structures and Materials Journal, Revisor de periódico da Journal of Structural Engineering, Revisor de periódico da Engineering Structures, Revisor de periódico da STRUCTURES, Revisor de periódico da Sustainability e Revisor de periódico do Materia-Rio de Janeiro. Tem experiência na área de Engenharia Civil, com ênfase em Estruturas. Atuando principalmente nos seguintes temas:estruturas mistas, concreto de alta resistência, ductilidade, pilares mistos preenchidos, Investigação experimental e Simulação numérica.

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DESIGN METHODS FOR RECYCLED AGGREGATE CONCRETE-FILLED STEEL TUBE (RACFST) STUB COLUMNS UNDER CONCENTRIC COMPRESSION

Abstract

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References