Desenvolvimento de um software com interface gráfica para análise e verificação de pontes ferroviárias em concreto armado

Abstract

Development of software with graphical interface for analysis and verification of railway reinforced concrete bridges. The work described here is the development of software capable to do structural analysis with emphasis on bridges. More attention is given to the analysis of railway bridges and the automatic generation of live load in accordance with the vehicles and trains-types user defined by. The software called BridgeLab Laboratory (Bridges) is able to do analysis of extreme importance with respect to the design and verification of civil structures. These analysis are: static analysis, pseudo-dynamic analysis, modal analysis and dynamic analysis. The code at BridgeLab was written in MATLAB® platform, due to some advantages of the language resulting in a shorter time of rogramming. The analyzes performed by the program are based on the direct stiffness method and use finite element of space frame which presents six degrees of freedom per node. In addition to performing the analyzes, BridgeLab performs the structural elements verification from the results of efforts obtained in each analysis according to the Brazilian standards, including verification of fatigue damages that is also verified according to the CEB. The verification is done in an integrated way through the SecLab (Sections Lab). After analysis the visualization results, stress diagrams, deformed configurations and modal shapes are done in the BridgeLab interface itself. The visualization of the deformed configurations of the structure and its modal forms can be done as a bar model or as extruded solids, considering the geometry of the cross section of the elements.