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http://dx.doi.org/10.12989/sem.2013.45.6.821

An improvement to seismic design of substation support structures  

Mohammadi, Reza Karami (Civil Engineering Department, K. N. Toosi University of Technology (KNTU))
Akrami, Vahid (Civil Engineering Department, Amirkabir University of Technology)
Nikfar, Farzad (Civil Engineering Department, McMaster University)
Publication Information
Structural Engineering and Mechanics / v.45, no.6, 2013 , pp. 821-835 More about this Journal
Abstract
The acceleration that the electrical equipment experiences on a structure can be several times the ground acceleration. Currently, substation support structures are being designed according to ASCE (Substation Structure Design Guide 2008), without any consideration about effects of these structures on dynamic behavior of mounted equipment. In this paper, a parametric study is implemented in order to improve seismic design of candlestick substation structures based on this design guide. To do this, dynamic amplification factor (DAF) of different candlestick support-equipment combinations is evaluated and compared to the target DAF presented in IEEE STD 693 (2006). Based on this procedure, a new criterion is developed to restrict maximum acceleration at support-equipment intersection.
Keywords
seismic design; dynamic amplification factor; substations; support structures;
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