Kalkan, ErolErolKalkanLaefer, Debra F.Debra F.Laefer2010-08-092010-08-092004 Elsev2004-12Engineering Structures Journal0141-0296http://hdl.handle.net/10197/2326This study describes a numerical projection of pre- and post-retrofitted conditions of telecommunication poles subjected to seismic hazards. The absence of explicit guidelines for the rehabilitation of existing poles motivated the investigation of the effectiveness of steel jack-eting for the retrofitting of self-supporting steel and reinforced concrete (RC) communication poles. Effects of mast flexibility, variable damping on dynamic response, and significance of period on base shear amplification were investigated. The overall effectiveness of retrofitting against base excitation was assessed for RC and steel poles through the application of modal analyses and response spectrum approach based on a set of strong motion accelerograms record-ed during the 1994 Northridge earthquake. Based on a serviceability approach, the analysis of results shows effectiveness of the steel jacketing in increasing load carrying capacity of the poles by enabling stress redistribution.772483 bytesapplication/pdfenAll rights reservedPolesFinite elementsRetrofittingSteel jacketingResponse spectrum analysisPoles (Engineering)--Design and constructionEarthquake resistant designFinite element methodSpectrum analysisJournal Article26142101211110.1016/j.engstruct.2004.07.006https://creativecommons.org/licenses/by-nc-sa/1.0/