Abstract
Local out-of-plane behavior of the cylindrical wall of non-diaphragm CHS column, which is brought about by the bending moment transferred through H-section beam connecting directly to the CHS, was experimentally investigated in the range from elastic to ultimate states. The basic mechanical model for the connection of non-diaphragm CHS to flange plate alone, which had been previously developed by the authors, was extended to the H-section paying attention to the additional effect of the web plate, from which formulae for calculating yield, plastic, and ultimate moment capacities as well as elastic rotational stiffness are derived. By comparing the calculated values with the data of experiment and numerical simulation, the predictabilities of these formulae were found satisfactory.
