EXPERIMENTAL RESEARCH ON FLEXURAL BEHAVIOUR OF LAMINATED STEEL BEAMS

To research flexural behavior of laminated steel beams that the upper steel beam and the lower steel beam were combined into an overall beam by a new type of shear connectors，a simply supported laminated overhanging beam with a total length of 3 m was designed． The ultimate loads，failure mode，deflection，strain distribution and slip-load curve were obtained by the flexural test． The experimental results showed that the new connectors could effectively transfer shear; the laminated steel beam with the new connectors showed a good holistic resistant behavior; the strain distribution was close to the plane section assumption; the failure mode of the laminated steel beam was a local buckling near the support; the connector was not failed in the loading process; the laminated steel beam with the new connectors was able to meet the demands of the mobile box buildings．