Banca de DEFESA: DANIEL ALVES MOURA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : DANIEL ALVES MOURA
DATE: 30/10/2023
TIME: 14:00
LOCAL: Plataforma Teams
TITLE:

COMPARISON OF DESIGN LOADS AND COEFFICIENTS AMONG BRAZILIAN AND INTERNATIONAL DESIGN CODES OF REINFORCED CONCRETE BRIDGES 

KEY WORDS:

Concrete structures, Bridges, Design coefficients, loadings, NBR, AASHTO LRFD, ACI 318-14, Eurocode

PAGES: 94
BIG AREA: Engenharias
AREA: Engenharia Civil
SUBÁREA: Estruturas
SPECIALTY: Estruturas de Concreto
SUMMARY:

The Urban infrastructure is one of the main factors in the economic growth of a country or region, where the development of new technologies and construction processes combined with the competitive demands of the market encourage the adaptation of bridge projects to the uncertainties and variability of their calculation parameters. This work analyzes the loads and weighting coefficients adopted by the Brazilian standards and the international standards AASHTO LRDF, ACI 318-14 and Eurocode, in order to assess which standard is more conservative. The results evaluated were obtained by means of a case study processed with the aid of CSiBridge software, analyzing loads and coefficients applied to different bridge lengths, in order to quantify the variation in the design of the superstructure when it is designed according to the approach of each of the standards. In addition to the design considerations applied to each standard individually, the permutation of the application of the coefficients between the standards was considered, with the additional impact coefficient, number of lanes coefficient and vertical impact coefficient belonging to the Brazilian standard; the multiple presence factor to the American standard; and the adjustment factor for double axle loads and adjustment factor for uniformly distributed loads to the European standard. It is possible to see a more conservative approach for the Brazilian standard, followed by the European standard, with the American standard being the least conservative. By smoothing out the loads, forces and reinforcements obtained, the conservatism observed for the Brazilian standard is reflected in the simplicity of the methodology used to apply the mobile load, which nevertheless presents efficient results when compared with the proposed international standards.

COMMITTEE MEMBERS:
Presidente - 2047809 - FRANCISCO EVANGELISTA JUNIOR
Interno - 1847391 - MARCOS HONORATO DE OLIVEIRA
Externo ao Programa - 3340876 - WELINGTON VITAL DA SILVA - UnBExterno à Instituição - MARCELO SILVA MEDEIROS JÚNIOR - UFC