Banca de DEFESA: SAMARA THAÍS LIMA RAMOS

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : SAMARA THAÍS LIMA RAMOS
DATE: 03/03/2022
TIME: 09:00
LOCAL: Sala virtual de videoconferência
TITLE:

Comparative analysis of loading verification methods in SWA for the issue of special transit authorization

KEY WORDS:

Highway bridges. Weight limits on bridges. Maximum load on bridges.

PAGES: 156
BIG AREA: Engenharias
AREA: Engenharia Civil
SUBÁREA: Estruturas
SPECIALTY: Mecânica das Estruturas
SUMMARY:

Aiming to develop a comparative evaluation of the principles for load analysis in bridges, this work proposes to perform the structural verification of a special work of art - OAE, through the study of the mobile loads adopted by the Brazilian (NBR 7188:2013), American (AASHTO: 2002 and 2020) and European (Eurocode 1: 2003) standards. The verification of the loads, generated by means of the mobile loads described in the respective standards, was performed on the Croatá river bridge, located on BR-423/AL, in the municipality of Canapi/AL, observing the limits of weight and dimensions, related to cargo vehicles on Brazilian highways, established by the resolutions of the National Traffic Council - CONTRAN. The bridge design information was made available by DNIT/AL, enabling the evaluation of the applied loads generated by the design loads described in the referred standards and by a special freight train. Numerical modeling was employed, through the finite element method (FEM), to analyze the effects of the passage of the standard trains, determining the maximum loads generated in the superstructure with the passage of the standard trains, comparing them and applying the determinations established in the standards. Using the internal forces from the numerical analysis, the methodology established by DNIT was applied to the results obtained in order to elaborate the Special Transit Authorizations - STA, which establishes the criteria for verifying structural safety in highway bridges. Through this study, it was concluded that the OAE under discussion is in adequate structural conditions for the passage of special loads and loads from international standards, whose safety factors presented in the verifications are higher than the unit. It was also concluded that the Brazilian standards, in contrast with the international standards, presented in the case analyzed higher safety factor values during the structural verification.

BANKING MEMBERS:
Presidente - 1640290 - WAYNE SANTOS DE ASSIS
Interno - 1121792 - FLAVIO BARBOZA DE LIMA
Externo à Instituição - HUDSON CHAGAS DOS SANTOS - UFPI