Tests on bolted steel angles in compression with varying end support conditions

摘要

Structural steel angles are often used as bracing members in buildings or in lattice transmission towers. Bolted end-connections of single steel angles allow for easy fabrication and quick erection, but induce additional bending moments due to the eccentric load introduction. This leads to a complex load carrying behavior, especially for members in compression. This causes a decrease in capacity compared to the case of a simply supported column with centric loading for smaller slenderness ratios. For larger slenderness ratios the beneficial effect of end restraints is assumed to compensate this drawback. Current design standards account for these effects via modified effective slenderness ratios resulting in significantly different predictions for the member capacities according to the individual regulations.