Perforated Composite Plate Girders with Intermediate Inclined Stiffeners Subjected to Combined Shear and Bending

This paper discusses the ultimate strength of composite plate girders with intermediate inclined stiffeners. The inclination angle stiffener, web opening size and span length are key factors influencing performance girder. study used LUSAS software to develop 20 non-linear finite element models using stiffener different angles, sizes lengths. have an 90°, 75°, 60°, 45° 30°. plates were divided into six or eight sub-panel webs depending on stiffener. behaviour influenced by length. Generally, girder increased when was reduced from 90° 30° a corresponding reduction in increase 44.63% for do = 100 mm L 3450 mm, 20.41% 200 4500 216.41% 58.89% due formation tension field panels. width plastic hinge shifted top bottom flange small exhibited high strength. 60° is higher than 75° angle. Therefore, has