Experimental investigation into flexural buckling of double-limb built-up plate members under compression

摘要: Abstract Planar steel plates have many advantages, including high precision, flexible outline shape fabrication, and convenient transportation storage, which make them suitable for various structures (e.g., reticulated shell structures). However, the are not commonly used as structural members, because they a relatively low out-of-plane flexural stiffness. To improve buckling resistance, novel type of built-up plate member comprising two longitudinal is proposed in this study. Additionally, behavior members investigated. A series compression tests on 42 specimens conducted to determine elastic ultimate critical loads. Flexural about minor axis observed be failure mode specimens. The equivalent slenderness ratio method theoretical loads With consideration measured material properties, geometric imperfections, residual stresses specimens, refined finite-element model developed simulate behavior. Furthermore, applicability representative specifications (American European) discussed. results indicate that design strengths calculated using these generally conservative determining members. Design curve “c” Eurocode 3 found most among interest strength. This study provides valuable guidance