Strength of Aluminum Alloys for Bridge Building

The resistance of aluminum alloys to the actions that are characteristic of operation in the load-bearing structures of bridge constructions, namely, fatigue, static, impact loads, and crack propagation, is studied. It is shown that, in bridge building, medium-strength aluminum alloys of the Al–Mg, Al–Mg–Si, and Al–Zn–Mg systems should be used. The specific features of deformation and fracture of aluminum alloys that affect their ductility, fracture energy, fracture toughness, and fatigue life are revealed.