000009560 001__ 9560
000009560 005__ 20141205150218.0
000009560 04107 $$aeng
000009560 046__ $$k2008-10-12
000009560 100__ $$aBojórquez, Eden
000009560 24500 $$aEffects of Degrading Models for Ductility and Dissipated Hysteretic Energy in Uniform Annual Failure Rate Spectra

000009560 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000009560 260__ $$b
000009560 506__ $$arestricted
000009560 520__ $$2eng$$aOne of the most important tools for seismic design purposes is the response spectrum because it represents the maximum demands on structures. Nevertheless, two aspects should be included on seismic response spectra provided by codes. The first aspect is the inclusion of specific reliability levels on the structures designed. The second is the inclusion of cumulative demands through plastic deformation. While uniform annual failure rate (UAFR) spectra can be used to account for the structural reliability, cumulative demand can be accounted through dissipated hysteretic energy spectra. In this paper the effects of degrading models for ductility and dissipated hysteretic energy UAFR spectra are studied. Narrow-band motions from the soft soil of the valley of Mexico were selected due to the large energy amount that demands to the structures. The implications to use simplify models as the well-known elasto-plastic to obtain the requirements of lateral strength are analyzed. Especially, the larges differences on the seismic coefficient obtained through simplify hysteretic models and degrading models are discussed. It is observed in structures that exhibit low to moderate degradation in strength, and low degradation in stiffness that the use of simplify hysteretic models can be adequate. However, with the aim to obtain satisfactory designs, for structures with important levels of degradation in stiffness, constitutive laws to represent with good accuracy the hysteretic behavior of structures are necessaries in the design spectra, or specific factors to account for the degradation in the mechanical characteristics.

000009560 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000009560 653__ $$aUniform annual failure rate spectra, dissipated hysteretic energy, degradation function

000009560 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000009560 720__ $$aBojórquez, Eden$$iRivera, J.Luz
000009560 8560_ $$ffischerc@itam.cas.cz
000009560 8564_ $$s327196$$uhttps://invenio.itam.cas.cz/record/9560/files/05-01-0126.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-01-0126.
000009560 962__ $$r9324
000009560 980__ $$aPAPER