000011039 001__ 11039
000011039 005__ 20141205155829.0
000011039 04107 $$aeng
000011039 046__ $$k2008-10-12
000011039 100__ $$aMomtahen, Ali
000011039 24500 $$aEvaluation of FEMA440 Equivalent Nonlinear Static Seismic Analysis for Irregular Steel Moment Resisting Frames

000011039 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011039 260__ $$b
000011039 506__ $$arestricted
000011039 520__ $$2eng$$aIt is well established that for seismic evaluation, design, and retrofitting of building structures, a simplified design-oriented modeling procedure is more practical. One of well-established procedures is the equivalent nonlinear static procedure summarized in FEMA356 based on nonlinear static pushover analysis using the target displacement predicted by the Coefficient Method (CM). CM utilizes a displacement modification procedure in which several empirically derived factors are used to modify the response of a single-degree-of freedom model of the structure assuming that it remains elastic. FEMA440 has suggested some recommendations for improving the performance of CM leading to a Modified Coefficient Method (MCM). This paper presents a detailed investigation on performance of FEMA440 MCM for estimating frame maximum roof displacement, base shear, and median story drifts of steel moment resisting frames with irregularities in elevation. Results of nonlinear dynamic analyses of 22 irregular frames subjected to a family of 14 ground motions and nonlinear equivalent static analyses of all frames up to the target roof displacement computed by MCM are compared to evaluate the accuracy and conservatism of FEMA440 MCM.

000011039 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011039 653__ $$aFEMA440 Modified Coefficient Method, Equivalent Nonlinear Static Analysis, Irregular Moment Resisting Steel Frames, Target Displacement

000011039 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011039 720__ $$aMomtahen, Ali$$iBanan, Mahmoud Reza$$iBanan, Mohammad Reza
000011039 8560_ $$ffischerc@itam.cas.cz
000011039 8564_ $$s244267$$uhttps://invenio.itam.cas.cz/record/11039/files/08-02-0077.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 08-02-0077.
000011039 962__ $$r9324
000011039 980__ $$aPAPER