Behavior of laterally restrained thin-walled open section beams

Opisana su teorijska i eksperimentalna istraživanja ponašanja tankostijenih nosača otvorenog poprečnog presjeka s bočnim pridržanjem. Posebno su razmatrani nosači Z-profila bočno pridržani uzduž pojasa trapezno profiliranim limom. Analiza ponašanja bočno pridržanog tankostijenog nosača provedena je tako što je njegov nepridržani pojas modeliran kao nosač na elastičnoj podlozi. U postupku je rotacijska opruga zamijenjena bočnom linijskom oprugom s krutošću elastične podloge.Theoretical and experimental study of laterally restrained thin-walled open section beams is presented. A special emphasis is placed on Z-section beams laterally restrained along the flange with trapezoidal steel sheeting. The behavior of the laterally restrained thin-walled beam was determined by modeling its unrestrained flange as a beam on an elastic base. In this procedure, the rotational spring was replaced with lateral linear spring with stiffness corresponding to that of the elastic base