Banca de DEFESA: João Paulo de Barros Santos

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : João Paulo de Barros Santos
DATE: 12/12/2023
TIME: 14:00
LOCAL: UNIVERSIDADE DE BRASÍLIA
TITLE:

INFLUENCE OF THE EDGE AND GROUP EFFECT ON THE RUPTURE OF THE CONCRETE CONE OF BARS WITH HEADS EMBEDDED IN REINFORCED CONCRETE ELEMENTS SUBJECTED TO TENSION

 

KEY WORDS:

Anchorage; Headed bar; Finite element model; Concrete cone failure; Parametric study.

PAGES: 113
BIG AREA: Engenharias
AREA: Engenharia Civil
SUBÁREA: Estruturas
SPECIALTY: Estruturas de Concreto
SUMMARY:

Headed bars are a promising alternative for anchoring reinforced concrete structural members, replacing hooks, curves, and straight bars, which, in situations of geometric limitation of the structural element, may result in a restriction of the necessary embedding of the anchor. However, the headed bar application is not trivial. Understanding the failure mechanism and parameters that influence the concrete cone resistance of headed bars under tension in concrete elements is the critical point of this application and needs advances. For this purpose, experimental and numerical tests were conducted to investigate the influence of the edge and group effect on the concrete cone resistance of headed bars in concrete elements under concrete cone failure. Additionally, a parametric numerical study with 23 simulations was planned to explore the influence of several variables on concrete cone failure, including concrete strength, flexural reinforcement ratio, geometry and head size, shaft diameter, and edge and group effects. The ultimate load results, failure modes, and influence on ultimate load are discussed.

COMMITTEE MEMBERS:
Presidente - 1847391 - MARCOS HONORATO DE OLIVEIRA
Interno - 1122599 - GUILHERME SALES SOARES DE AZEVEDO MELO
Externo à Instituição - RODRIGO GUSTAVO DELALIBERA - UFU