000018473 001__ 18473
000018473 005__ 20170118182224.0
000018473 04107 $$aeng
000018473 046__ $$k2017-01-09
000018473 100__ $$aSullivan, Timothy
000018473 24500 $$aAn Alternative Seismic Hazard Definition for Structures Sensitive To Bi-Directional Earthquake Excitation

000018473 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018473 260__ $$b
000018473 506__ $$arestricted
000018473 520__ $$2eng$$aAlthough earthquake ground motions are complex three-dimensional phenomena, the seismic design of a structure is usually carried out considering horizontal ground shaking in two perpendicular directions only. While the issue of ground motion dependence on the orientation of the recording devices has been the focus of many significant developments during the last decade, the effects of directionality on the characteristics of the structure has received less attention. This paper uses three case-study structural typologies and a set of 405 ground motion pairs from the Reference Database for Seismic Ground-Motion in Europe (RESORCE) to demonstrate the relevance of accounting for directionality in the design and assessment of structures. An alternative definition of hazard that breaks down the problem into an orientation-independent and an orientation-dependent component is proposed with the aim of achieving uniformity in the likelihood of different types of buildings exceeding a certain limit state. The challenges associated with the incorporation of this new perspective to seismic codes within the context of Performance-Based Earthquake Engineering are discussed. Though the focus of this work is set on elastic response of single-degree-of-freedom (SDOF) systems, the approach presented herein is considered to be a fundamental initial step towards a design philosophy that guarantees that the seismic performance of a building does not depend on its sensitivity to the angle of incidence of ground motions.

000018473 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018473 653__ $$adirectionality; strong motion; performance-based earthquake engineering; probabilistic assessment.

000018473 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018473 720__ $$aSullivan, Timothy$$iNievas, Cecilia
000018473 8560_ $$ffischerc@itam.cas.cz
000018473 8564_ $$s972459$$uhttps://invenio.itam.cas.cz/record/18473/files/1526.pdf$$yOriginal version of the author's contribution as presented on USB, paper 1526.
000018473 962__ $$r16048
000018473 980__ $$aPAPER