A study on a simulation model of temporary column-to-column joints in steel structural buildings

Currently, in steel erection work in Japan, the wireless steel erection method, which introduced high-strength erection alignment devices to temporary column-to-column joints, is the mainstream method. Due to the tendency for the critical pass to the welding process in order to shorten the construction process, the range of steel frames in a temporary state will expand and its term will be prolonged. Consequently, the importance of seismic safety considerations to temporary column joints grows because of the increased probability of damage and the scale of earthquakes. This study proposes new methodology for evaluation of strength of the temporary column joints with the special alignment devices using finite element (FE) modeling which verifies the seismic safety of steel frames during erection. To this end, it implemented the simulation study of pushover experiments of the temporary column joints (solid models) of square steel tube columns, and the results such as the stress and deformation properties of each component were compared with those calculated by the general conventional stress calculation method, and its validity was confirmed.