ASPECTS OF FINITE ELEMENT MODELING OF STRENGTHENED RC WALLS WITH OPENING

Authors

  • Marcos A. Silva Departamento de Estruturas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo, Universidade Estadual de Campinas, 224 Saturnino de Brito, Campinas, Brasil https://orcid.org/0000-0002-9887-2602
  • Rafael A. Sanabria Díaz Departamento de Estruturas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo, Universidade Estadual de Campinas, 224 Saturnino de Brito, Campinas, Brasil https://orcid.org/0000-0002-6907-7159
  • Leandro Mouta Trautwein Departamento de Estruturas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo, Universidade Estadual de Campinas, 224 Saturnino de Brito, Campinas, Brasil https://orcid.org/0000-0002-4631-9290
  • Luiz C. Almeida Departamento de Estruturas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo, Universidade Estadual de Campinas, 224 Saturnino de Brito, Campinas, Brasil https://orcid.org/0000-0001-8431-8929

DOI:

https://doi.org/10.1590/1679-78256572

Abstract

FIBER-REINFORCED POLYMERS ARE MATERIALS USED TO RECOVER/STRENGTHEN REINFORCED CONCRETE STRUCTURES LOAD CAPACITY. THIS MATERIAL EXHIBITS GOOD MECHANICAL PROPERTIES WITH LOW SELF-WEIGHT. THIS WORK PERFORMED A SERIES OF NONLINEAR FINITE ELEMENT ANALYSES IN ONE-WAY (OW) WALL PANELS WITH A CENTRAL CUT-OUT OPENING, STRENGTHENED USING CARBON FIBER-REINFORCED POLYMER (CFRP). THE EXPERIMENTAL TESTS CONDUCTED BY MOHAMMED ET AL. (2013) WERE USED AS A BENCHMARK. THE NUMERICAL SIMULATIONS WERE CARRIED OUT IN THE COMMERCIAL CODE ATENA, IN WHICH THE MATERIAL AND GEOMETRICAL NONLINEARITIES WERE ACCOUNTED. AS A RESULT, THE NUMERICAL MODELS REASONABLY PREDICTED THE ULTIMATE LOAD OF THE WALLS, AND ALL MODELS PRESENTED A CRACK PATTERN SIMILAR TO THE EXPERIMENTAL TESTS, VERIFYING THAT THE CFRP ADDITION CAUSED A MORE DISTRIBUTED CRACK PATTERN. THE RESULTS OBTAINED IN THIS WORK REVEALED THAT CFRP STRENGTHENING CAUSED 24-50% ENHANCEMENT OF THE ULTIMATE LOAD.
ADDITIONAL MODELS WERE CARRIED OUT TO EXTEND THE NUMERICAL RESULTS AND PROPOSED A NEW EQUATION THAT CAN BE USED TO PREDICT THE ULTIMATE LOAD OF OW WALLS WITH AND WITHOUT CFRP STRENGTHENING.

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Published

2021-10-20

Issue

Vol. 18 No. 8 (2021)

Section

Articles

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