000010487 001__ 10487 000010487 005__ 20141205155732.0 000010487 04107 $$aeng 000010487 046__ $$k2008-10-12 000010487 100__ $$aKayhani, Hossein 000010487 24500 $$aUse of Load Dependent Ritz Vectors in Modal Pushover Analysis 000010487 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering 000010487 260__ $$b 000010487 506__ $$arestricted 000010487 520__ $$2eng$$aA T: The performa T ance of a str ructural system can be est timated using a non-linea static analy which ha found g ar ysis as widespread use in perfor w u rmance based seismic des d sign due to i simplicity in estimatin inelastic s its y ng structural response. Mo r odal Pushover Analysis (M r MPA) has bee suggested to increase th accuracy o Pushover analysis; en he of but it fails in some cases o the irregula structural systems (i.e. stiffer lower stories). The o b of ar s objective of th paper his is to present t use of Lo Dependen Ritz vector (LDR) whi takes into account the spatial distrib i the oad nt rs ich bution of dynamic forc instead of commonly u d ce; f used eigen-m mode shape in the MPA in order to imp n prove the acc curacy of calculated res c sponse of irre egular system when limit number of modes is to be considere especially for stiff ms ted f o ed, y systems wher higher mo effects ca re ode annot be igno ored. The num merical resul have indic lts cated that usi LDR ing vectors, in case of stiffer lower stori v c ies, increase the accuracy of force re y esponse sign nificantly (bec cause of inclusion of higher mode effects without really c i e computing th hem). There are also som suggestion about me ns choosing adequate number of required Ritz vectors f vertically regular or irr c r for regular structu considere ures ed. 000010487 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb. 000010487 653__ $$a 000010487 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15 000010487 720__ $$aKayhani, Hossein$$iGhafory-Ashtiany, Mohsen 000010487 8560_ $$ffischerc@itam.cas.cz 000010487 8564_ $$s1590916$$uhttps://invenio.itam.cas.cz/record/10487/files/05-01-0340.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-01-0340. 000010487 962__ $$r9324 000010487 980__ $$aPAPER