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http://dx.doi.org/10.5000/EESK.2006.10.4.055

The Nonlinear Direct Spectrum Method Improving Application and Reliability of Existing Approximate Nonlinear Methods  

Kim, Jae-Ung (동아대학교 건축학부)
Kang, Pyeong-Doo (거창전문대학 건축.인테리어과)
Jun, Dae-Han (동서대학교 건설공학부)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.10, no.4, 2006 , pp. 55-66 More about this Journal
Abstract
This paper considers the nonlinear direct spectrum method to estimate seismic performance of mixed building structures without iterative computations, given dynamic property $T_1$ from stiffness skeleton curve and nonlinear pseudo acceleration $A_{1y}/g$ and/or ductility ratio p from response spectrum. Nonlinear response history analysis has been performed and analysed with various earthquakes for evaluation of correctness and confidence of nonlinear direct spectrum method. The conclusions of this study are as follows; (1) Nonlinear direct spectrum method is considered as a practical method which is applicable to compute the structural initial elastic period and the yielding strength from stiffness skeleton owe and calculate the nonlinear maximum response of structure directly from nonlinear response spectrum. (2) The comparison of the analysis results from NDSM and NRHA showed that the average errors were less than 20% in about 3/4 of the analysis cases, and that the results obtained from NDSM turned out to be generally larger than those from NRHA.
Keywords
nonlinear direct spectrum method; upper wall-lower frame system; pushover analysis; maximum nonlinear response;
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Times Cited By KSCI : 1  (Citation Analysis)
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