Seismic based strengthening of steel and RC telecommunication poles based on fem analysis

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Title: Seismic based strengthening of steel and RC telecommunication poles based on fem analysis
Authors: Kalkan, Erol
Laefer, Debra F.
Permanent link: http://hdl.handle.net/10197/2326
Date: Dec-2004
Abstract: This 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.
Funding Details: Not applicable
Type of material: Journal Article
Publisher: Elsevier
Copyright (published version): 2004 Elsevier Ltd
Keywords: Poles;Finite elements;Retrofitting;Steel jacketing;Response spectrum analysis
Subject LCSH: Poles (Engineering)--Design and construction
Earthquake resistant design
Finite element method
Spectrum analysis
DOI: 10.1016/j.engstruct.2004.07.006
Language: en
Status of Item: Peer reviewed
Appears in Collections:Urban Institute Ireland Research Collection
Critical Infrastructure Group Research Collection
Civil Engineering Research Collection

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