Initial Rotational Stiffness of Hshaped Beams to RHS Column Endplate Connections Using Blind Bolts

Abstract:

Tests of six groups of flushed and extended endplate connections using blind bolts were carried out. Based on the existing research results, the stiffness formulas of blind bolts in tension, end plate in bending, column wall in tension, column wall in compression and end plate in compression were derived. The theoretical calculation formula of the initial rotational stiffness of flushed and extended connections under bending moment was proposed by means of the component method. The results show that the calculation formula of the initial rotational stiffness of connections is in good agreement with the test results, and the precision can meet the requirements of engineering design. Finally, the design proposal of Hshaped steel beams to rectangular hollow section(RHS) column endplate connections using blind bolts was put forward.

Key words:blind bolts; rectangular hollow section(RHS) columns; beamtocolumn connection; component method; initial rotational stiffness