<正>Steel hollow sections are used extensively in the construction,offshore, mining and security industries.In many applications these sections are concrete filled in order to gain strength advantages under axial compression loads.These sections may be subjected to transverse impact loads such as ship impacts in offshore structures,vehicle impacts on security bollards or impact and blast loads from accidental or intentional impacts or explosions on infrastructure.This paper reports experiments on hollow and concrete filled steel square hollow(SHS) section beams subjected to low velocity,large mass transverse impacts at the beam midspan, in order to investigate the effect of the concrete filling on the impact resistance. Three different section sizes are tested as fully clamped beams,where the impact energy is sufficiently large so as to cause complete failure of the beam by tensile tearing at the supports.It is shown that slender hollow sections undergo local deformations beneath the impactor,and when concrete filled these sections can sustain greater transverse impact loads as the local deformations are restricted from forming.However,compact sections do not deform locally and do not show significant increases in transverse impact capacity.
transverse impact;;tubular beams;;concrete filled tubes;;impact tests
To explore the background and basis of the node document
Documents that have the similar content to the node document