EXPERIMENTAL STUDY ON THE EXPOSED-TYPE COLUMN BASE WITH HIGH CONSTRUCTIONAL ACCURACY

Abstract

Column base of the steel building structure is an most important part which transmits the resultant force applied to the upper structure to the foundation. Nevertheless, the difference of accuracy in constructional works between the steel structures fabricated in factories and the foundations made of the reinforced concrete executed on the construction site arises a critical problem in the structural performance of column bases. In this study, an improved type of column base which can absorb constructional errors between the upper structure and the foundation is proposed. A series of experiments is made on the improved column bases to clarify the structural performance especially under the seismic loading condition. From the experimental result, the effectiveness of improved type column base is verified.