seismic retrofit of RC column using hat-shape steel section and channel with high tension bolt connection and seismic retrofit method using the RC column

摘要

The present invention relates to a main section having a main section having a pair of side walls fixed to an existing pillar by using a plurality of anchor bolts and a pair of side walls bent outwardly from both ends of the pillar, A connection type steel portion formed of two opposite side walls of the main shape steel portion from both ends of the shielding wall to overlap the two sidewalls of the main shape steel portion, A high strength bolt for fastening and fixing the overlapped portions between the two first side walls of the main section steel section and the two second side walls of the connection section; And a filling material filled in the space formed by the coupling between the main section steel section and the connection section steel section to reinforce the strength of the main section steel section. The present invention provides a steel column progressive steel structure using a cap steel and a bolt joint, Can be made more convenient, and it is not required to perform welding work on site, reinforcement work, and work for installing a separate form, so that it is possible to easily perform work on site and reduce the number of work processes.