Análise teórica e experimental de flambagem em cantoneiras conectadas por uma aba

Abstract

The advantages of steel structures are increasingly attracting researchers and professionals to invest in this kind of solution, because its assembly is fast, methodical and lass susceptible to errors. This study, embedded in this context, aims, according to two specified methods in brasilian code NBR 8800 (2008), to perform the sizing of angle bars connected in one flap submitted to compression and to compare this results with the breaking load obtained through laboratory testing, where buckling is decisive both in theoretical and the experimental analysis. Moreover, how part of measured the displacement suffered by two flaps of bar seeking to obtain the strain in each direction and, consequently, to check the design process and model of buckling more appropriate in this case. After performing the calculations and experimental tests, checked that method of calculus that consider a equivalent length of buckling more approached of breaking load obtained in laboratory and that the displaceability of angle bar was predominantly parallel to connected flap.