000009747 001__ 9747
000009747 005__ 20141205153150.0
000009747 04107 $$aeng
000009747 046__ $$k2008-10-12
000009747 100__ $$aChu, Yi-Lun
000009747 24500 $$aA Unified Form for Response of 3D Generally Damped Linear Systems Under Multiple Seismic Loads Through Modal Analysis

000009747 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000009747 260__ $$b
000009747 506__ $$arestricted
000009747 520__ $$2eng$$aAccurate estimation of the seismic response of structures is an important issue in aseismic design. Under earthquake excitations, the deformation and internal force distributions of structures are quite complex. This is particularly true for irregular structures under multiple directional seismic loads. In most current engineering practice, only those response quantities which are linear combinations of the nodal displacements are considered to be critical for design. However, this may not always be the case, especially for those systems enhanced with high damping devices. For example, the relative nodal velocities are important for the design of the dampers and the nodal absolute accelerations determine the strength demand of the nonstructural components. This paper presents a time-history-based formulation of the responses for generally damped linear systems excited by multiple directional seismic loads through modal analysis. Solutions to the structural nodal displacements, the nodal velocity and absolute acceleration responses are derived. It is shown that the modal response quantities required in the nodal velocity and absolute acceleration are identical to those that are required in the structural displacement responses. Moreover, most response quantities of interest for seismic evaluation and design can be obtained through the linear transformation of the structural displacement, velocity or absolution acceleration as long as the structure remains in the elastic range (e.g. inter-story drift, story shear, nodal relative velocity, floor acceleration, etc.). A unified form capable of representing these response quantities is therefore established.

000009747 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000009747 653__ $$aModal analysis, generally damped structures, multicomponent seismic analysis, unified form

000009747 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000009747 720__ $$aChu, Yi-Lun$$iSong, Jianwei$$iLiang, Zach$$iLee, George C.
000009747 8560_ $$ffischerc@itam.cas.cz
000009747 8564_ $$s248519$$uhttps://invenio.itam.cas.cz/record/9747/files/05-01-0101.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-01-0101.
000009747 962__ $$r9324
000009747 980__ $$aPAPER