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Title:
METHOD FOR SIMPLY EVALUATING EARTHQUAKE RESISTANCE OF OUTDOOR STEEL STRUCTURE OF SUBSTATION
Document Type and Number:
Japanese Patent JP2016200881
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method for simply evaluating an earthquake resistance of a large number of existing outdoor steel structures in a substation, without performing an earthquake response analysis.SOLUTION: A relational expression between a beam attachment height H and a primary characteristic period T1 is determined in advance through an eigenvalue analysis for a detailed model of a reference steel structure of each voltage class. A stress analysis is performed through an earthquake response analysis to determine a relational expression for T1 between a maximum acceleration response value Ax1 determined from an acceleration response spectrum of an anticipated earthquake wave and a short-term allowable stress degree ratio σ/f of a member determined from a result of the stress analysis. These relational expressions are used to simply evaluate an earthquake resistance of the target outdoor steel structure belonging to a specific voltage class, in the steps of determining the primary characteristic period t1 of the outdoor steel structure from a beam attachment height h, using t1 to predict the maximum acceleration response value ax1 from the acceleration response spectrum of the anticipated earthquake wave, estimating σ/f on the basis of ax1, and determining the outdoor steel structure to be earthquake-proof on the basis of σ/f>1.SELECTED DRAWING: Figure 9

Inventors:
KOBAYASHI TAKAYUKI
ETO JUN
NAKAKOJI HAJIME
ODAWARA FUMITOSHI
ISHIDA MICHIHIRO
TAKAGI SHUNICHI
Application Number:
JP2015078944A
Publication Date:
December 01, 2016
Filing Date:
April 08, 2015
Export Citation:
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Assignee:
TOKYO ELECTRIC POWER CO HOLDINGS INC
TOMOE CORP
International Classes:
G06F17/50; E04H5/04
Domestic Patent References:
JP2000322467A2000-11-24
JP2002194894A2002-07-10
JP2011080905A2011-04-21
JP3106618U2005-01-06
JP2010065411A2010-03-25
JP2009008562A2009-01-15
JP2005187124A2005-07-14
Attorney, Agent or Firm:
Kumon enjoyment
Hisako Yasuko