Banca de DEFESA: MATEUS ARAÚJO DE SOUZA CELESTINO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : MATEUS ARAÚJO DE SOUZA CELESTINO
DATE: 13/05/2022
TIME: 14:00
LOCAL: Programa de Pós-Graduação em Engenharia Civil on line
TITLE:

Recommendations for the Detailing of Indirect Supports in Reinforced Concrete Beams

KEY WORDS:

indirect support, hanger reinforcement, design recommendations.

PAGES: 127
BIG AREA: Engenharias
AREA: Engenharia Civil
SUMMARY:

Indirect supports consist of beams being supported by others beams and the presence of these support situations in constructions is increasingly common, as it is a structural alternative to increase spans without columns, for example. These are discontinuity regions and must be designed using the strut and tie method (STM). In the present work, the theory for the application of STM is explained and its application and importance is presented in one of the studies exposed in the work. The recommendations present in the literature and the normative indications of several standards (ACI 318-19, CSA A23.3-04, among others) are presented and compared with each other. In addition, five experiments are presented, which are divided into two groups: the first one that considers elements in which the torsion does not act on the support beam and a second one in which the torsion acts. Therefore, the present work, through comparisons between recommendations and experimental studies, aims to present recommendations for the design of indirect supports in reinforced concrete beams. Differences were observed between the recommendations of the literature and the standard in most of the design points: addition to the shear reinforcement, load to be suspended, distribution zone, among others. In addition, for regions where there is a torsional moment acting on the support beam, it was noticed that only the inner legs collaborate to suspend the load and this important point for the structural safety of the region is disregarded by all standards. Finally, it was observed that the Canadian standard CSA A23.3-04 proved to be the most suitable for the project and that due to the few studies found and the differences presented, it is necessary to expand research on this topic where this present work awaits to serve as a driver in the development of studies on indirect support.

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