000010340 001__ 10340
000010340 005__ 20141205155717.0
000010340 04107 $$aeng
000010340 046__ $$k2008-10-12
000010340 100__ $$aIshihara, T.
000010340 24500 $$aModal Anlysis of Uplifting Behavior of Buildings Modeled as Uniform Shear-Beam

000010340 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000010340 260__ $$b
000010340 506__ $$arestricted
000010340 520__ $$2eng$$aIt has been pointed out that buildings during strong earthquakes have been subjected to foundation uplift. The rocking motion accompanied by uplift can reduce the damage of the structures as mentioned in some previous studies. To understand the general properties of transient uplifting behavior of multi-story buildings, studies with simpler model and mathematical expressions are useful. In this paper, dynamic behavior of buildings allowed to uplift is investigated by means of classical modal analysis. The system considered is a uniform shear-beam model on a rigid ground. The equations of motion are derived and eigenproblem is solved to investigate the modal properties during uplift. Initial velocity analysis during the first excursion of uplift is carried out to show the responses of transient rocking motion accompanied by uplift. In addition to the confirmation of significant reduction effect, it is pointed out from the results that the relatively complicated uplift responses at a glance can be recognized as natural consequences of higher modes’ properties and their behaviors.

000010340 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000010340 653__ $$arocking vibration, uplift, higher mode, equivalent modal mass and direction, potential energy of self-weight, distribution of story shear coefficient

000010340 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000010340 720__ $$aIshihara, T.$$iMidorikawa, M.$$iAzuhata, T.
000010340 8560_ $$ffischerc@itam.cas.cz
000010340 8564_ $$s597247$$uhttps://invenio.itam.cas.cz/record/10340/files/05-06-0116.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-06-0116.
000010340 962__ $$r9324
000010340 980__ $$aPAPER