Applicability of seismic retrofitting technique by setting steel segmentinto existing steel bridge pier with rectangular cross section

Abstract

Steel column members with Embedded Plastic Segment (EPS) has been developed and proposed as a new seismic retrofitting technique for existing steel bridge piers to enhance the ductility with less increment in the ultimate strength of the columns. In this paper, the effect of the seismic retrofitting technique on the ductility and ultimate strength of a steel column member is investigated by comparing with a concrete filled column member and a constitutive model of EPS with the proper length is proposed for the elasto-plastic analysis in the design. lso presented is an application example of the seismic retrofitting technique into an actual existing steel bridge pierrequired to be retrofitted.