000020315 001__ 20315
000020315 005__ 20170118182409.0
000020315 04107 $$aeng
000020315 046__ $$k2017-01-09
000020315 100__ $$aRomão, Xavier
000020315 24500 $$aDetermination of the Critical Angle of Seismic Forces for the Safety Assessment of 3D RC Buildings Using Lateral Force Analysis

000020315 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000020315 260__ $$b
000020315 506__ $$arestricted
000020315 520__ $$2eng$$aIn three-dimensional asymmetric buildings, the orientation of the applied forces with regard to the structural system as well as the vertical distribution of the lateral forces affect the structural response. The proposed study addresses the determination of the critical angle of incidence of the lateral static forces that are needed to carry out lateral force analysis within the context of procedures for the seismic safety assessment of existing structures. For this purpose, an analytical methodology is developed to obtain the critical angle of incidence that leads to the maximum demand in terms of storey displacements. The procedure is based on the properties of the centre of stiffness and the principal directions of single storey buildings and can be straightforwardly applied to single storey and multi-storey isotropic buildings with an arbitrary in-plan configuration. Isotropic are buildings that have proportional horizontal stiffness matrices and, as a consequence, possess principal directions. The proposed procedure is subsequently applied to general multi-storey buildings having any configuration in plan, as long as rigid diaphragms can be considered at the storey levels. Still, for the later type of buildings fictitious properties equivalent to the centre of stiffness and the principal directions have to be defined in advance. Finally, two case studies are presented and the applicability of the methodology is discussed.

000020315 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000020315 653__ $$acritical angle of incidence; 3D analysis; lateral force analysis; seismic safety assessment; asymmetric buildings;

000020315 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000020315 720__ $$aRomão, Xavier$$iAthanatopoulou, Asimina$$iSkoulidou, Despoina
000020315 8560_ $$ffischerc@itam.cas.cz
000020315 8564_ $$s297459$$uhttps://invenio.itam.cas.cz/record/20315/files/967.pdf$$yOriginal version of the author's contribution as presented on USB, paper 967.
000020315 962__ $$r16048
000020315 980__ $$aPAPER