Antiseismic property of telecommunication equipment
is very important for the grasp of the damage and the restoration after
earthquake. Telecommunication business operators are regulating
seismic standard for their equipments. These standards are organized
to simulate the real seismic situations and usually define the minimum
value of first natural frequency of the equipments or the allowable
maximum displacement of top of the equipments relative to bottom.
Using the finite element analysis, natural frequency can be obtained
with high accuracy but the relative displacement of top of the
equipments is difficult to predict accurately using the analysis.
Furthermore, in the case of simulating the equipments with access
floor, predicting the relative displacement of top of the equipments
become more difficult.
In this study, using enormous experimental datum, an empirical
formula is suggested to forecast the relative displacement of top of the
equipments. Also it can be known that which physical quantities are
related with the relative displacement.
 Telcordia, Network Equipment Building System(NEBS) Requirements:
Physical Protection, GR-63-CORE, Issue 3, 2006.
 ETSI EN 300-019 v2.2.2, Environmental conditions and environmental
tests for telecommunications equipment, 2003.
 Heung-Shik Lee, Myung-Gu Kim and Chongdu Cho, "Seismic Analysis
on a Control Panel of (Nuclear) Power Plant", Journal of the KSNVE,
15-6, 652-659 (2005).
 Bong Jin Kang et al., "Study of Earthquake-resistant Design for Wireless
Base Station Using Dynamic Response Analyses and Tests", The 17th
International Congress on Sound & Vibration, (2010).
 Chi Ming Wong, "Seismic Response of Telecommunications Equipment
Supported on Access Floors", Doctoral Thesis, McMaster University,
 Ronald Ziemian, Derek Mostoller and Kenneth Philogene, "Simulating
Seismic Response Behavior of Telecommunication Equipment", Journal
of Structural Engineering, 122(10), 1247-1249, (1996).