Banca de DEFESA: FERNANDA KAREN MELO DA COSTA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : FERNANDA KAREN MELO DA COSTA
DATE: 17/09/2021
TIME: 08:00
LOCAL: Remoto - https://meet.google.com/rgn-vkzf-qmu
TITLE:

Influence of concrete strength in live load bending moment distribution in bridges widened

KEY WORDS:

 

Bridges in concrete. Load distribution factor. Bridge widening. Structural analysis. Finite Element Method.

PAGES: 213
BIG AREA: Engenharias
AREA: Engenharia Civil
SUBÁREA: Estruturas
SPECIALTY: Estruturas de Concreto
SUMMARY:

This research consists of the analysis of the distribution of bending moments and shear forces due to the live load in the beams of straight reinforced concrete bridges that have undergone a process of enlargement of the superstructure. For this purpose, analytical models of load sharing in bridge decks were developed based on the principles of the Leonhardt method and numerical models, using the Finite Element Method (FEM), with the aid of the CSiBridge® program, version 21. Bridge situations with different numbers of beams and with concretes of different strengths in the widening region were analyzed, which allowed to conclude that the distribution of forces between beams of the same geometry fundamentally depends on the strength of the concrete in the widening region and that the greater it is the strength of the concrete in the widening more efforts are absorbed by the new beams and less by the existing beams. In addition, it was found that the increases and decreases in efforts in the beams as a function of the concrete strength follow closely linear functions and, mainly, 2^nd order polynomials.

BANKING MEMBERS:
Presidente - 1515200 - JOSE NERES DA SILVA FILHO
Interno - 2087565 - RODRIGO BARROS
Externo à Instituição - RODRIGO GUSTAVO DELALIBERA - UFU