Open AccessVerification of the equivalent stiffness method on the example of a model study of a two-span folding beam based on fixed supports
Author(s) -
Jan Marszałek,
Mieczysław Piechota
Publication year - 2018
Publication title -
biuletyn wojskowej akademii technicznej
Language(s) - English
Resource type - Journals
ISSN - 1234-5865
DOI - 10.5604/01.3001.0012.6661
Subject(s) - stiffness , structural engineering , beam (structure) , span (engineering) , folding (dsp implementation) , connection (principal bundle) , constant (computer programming) , bending stiffness , work (physics) , deformation (meteorology) , mathematics , engineering , materials science , computer science , mechanical engineering , composite material , programming language
The article covers the analysis of the equivalent stiffness method in a two-span foldingbeam based on fixed supports, carried out on the basis of model tests. The essence of this analysis wasto check the deformation of the entire beam for the constant equivalent stiffness. For this purpose,detailed measurements of deflections at each beam connection were made for different: size of assemblyclearances, load values and length of the spans. Then, the results of the measurements were comparedwith the theoretical results. Theoretical analysis was carried out using the strict method and the FiniteDifference Method. The conducted analysis confirmed the possibility of adopting constant equivalentstiffness in two-span folding beams. This is a continuation of considerations regarding the workof multi-span folding beams.Keywords: civil engineering, folding bridges, equivalent stiffness, assembly clearance.