A Study to Improve Earthquake Resistant Capacity of Steel Gable Truss Structures by Applying Hysteresis Dampers to the Column Bases

Abstract

This paper discusses three subjects for long span gable trussed structures based on the results of elasto-plastic earthquake response analyses. First, the strength and deformation capacity of the gable trussed structures designed by the static earthquake loads proposed in the previous paper is examined. Then, a set of hysteresis dampers installed at the feet of the columns are proven to be much effective for increasing earthquake resistant capacity. Finally, a method for designing the dampers is investigated by the energy concept.