000012010 001__ 12010
000012010 005__ 20141205160010.0
000012010 04107 $$aeng
000012010 046__ $$k2008-10-12
000012010 100__ $$aWang, Dongsheng
000012010 24500 $$aInelastic Response Spectra for Bidirectional Ground Motions

000012010 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000012010 260__ $$b
000012010 506__ $$arestricted
000012010 520__ $$2eng$$aMore attention has been paid to the inelastic design spectra with the development of performance based seismic design, because it can be used to estimate the maximum displacement demand of structures. The work is aimed at developing a bidirectional inelastic response spectrum by considering the multi-component earthquake excitation and coupled characteristics of structural inelastic response. The normalized equation of motion of the single-mass-system with two lateral freedoms along its perpendicular principal axes is formulated using strength reduction factors when subjected to two directional ground motions. Restore force characteristics of the two-degree-of-single-mass-system are determined by two-dimensional yield-surface plasticity theory. Then inelastic spectra for bidirectional ground motions is presented that is defined as the ratio of the maximum displacement responses in the same principal axes direction of the single-mass-system when subjected to two and one dimensional ground motions respectively. The pseudo-constant ductility inelastic spectra for bidirectional ground motions is given, which assumed ductility factor µx and µy keep constant only in one directional earthquake input is given. The effects of periods, force reduction factors or displacement ductility factors, and damping on spectra amplitude are discussed by statistic analysis of 3 groups of bidirectional recordings on hard, medium and soft site.

000012010 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000012010 653__ $$abidirectional ground motions, inelastic response spectra, strength reduction factors, ductility factors, soil conditions

000012010 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000012010 720__ $$aWang, Dongsheng$$iLi, Hongnan$$iWang, Guoxin$$iFan, Yingfang
000012010 8560_ $$ffischerc@itam.cas.cz
000012010 8564_ $$s168001$$uhttps://invenio.itam.cas.cz/record/12010/files/05-01-0090.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-01-0090.
000012010 962__ $$r9324
000012010 980__ $$aPAPER