000013223 001__ 13223
000013223 005__ 20161114160332.0
000013223 04107 $$aeng
000013223 046__ $$k2009-06-22
000013223 100__ $$aPardalopoulos S., J.
000013223 24500 $$aSpatial component analysis of 3-d displacement and storey-drift envelopes of r.c. buildings under seismic loads

000013223 24630 $$n2.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000013223 260__ $$bNational Technical University of Athens, 2009
000013223 506__ $$arestricted
000013223 520__ $$2eng$$aDesign and seismic assessment of structures based on the attainment of a specified performance state, defined by strain or drift limits, is a new concept. Knowledge of the spatial characteristics of the deformed shape of the structure at the state of its maximum response is of extreme significance for establishing deformation demands in the context of displacementbased seismic assessment or redesign. Furthermore, the knowledge of the structure’s deformed shape is necessary for the design and attachment of secondary systems (i.e. natural gas transmission pipelines), whose seismic response is multiply excited through the displacements at the point of the building where they are attached. This paper investigates the spatial envelope of the building’s displaced shape and the threedimensional distribution of drift for R.C. buildings, with and without irregularities in plan and in height, at the time of their maximum seismic response. Elastic and inelastic Incremental Dynamic Analyses have been carried out, with parameters of investigation being the structural configuration, the earthquake PGA and frequency content. The approximate displacement envelope of the structure’s seismic response is determined as a linear combination of the translational fundamental shapes in the two orthogonal directions of the plan and the pure mode of rotation, calculated by vibration-analysis procedures in the corresponding directions. This enables simple component analysis of the dynamic response of the structure, where, depending on the orientation of the ground motion, the participation of the components is estimated and used to establish the envelope of displacements and interstorey drift of the structure in space. The finding is tested and confirmed in the numerical output of calculated responses.

000013223 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013223 653__ $$aDrift; Modal Analysis; Deformed Shape; Displacement-Based seismic assessment; R.C. Buildings. Abstract. Design and seismic assessment of structures based on the attainment of a specified performance state, defined by strain or drift limits, is a new concept. Knowledge of the spatial characteristics of the deformed shape of the structure at the state of its maximum response is of extreme significance for establishing deformation demands in the context of displacementbased seismic assessment or redesign. Furthermore, the knowledge of the structure’s deformed shape is necessary for the design and attachment of secondary systems (i.e. natural gas transmission pipelines), whose seismic response is multiply excited through the displacements at the point of the building where they are attached. This paper investigates the spatial envelope of the building’s displaced shape and the threedimensional distribution of drift for R.C. buildings, with and without irregularities in plan and in height, at the time of their maximum seismic response. Elastic and inelastic Incremental Dynamic Analyses have been carried out, with parameters of investigation being the structural configuration, the earthquake PGA and frequency content. The approximate displacement envelope of the structure’s seismic response is determined as a linear combination of the translational fundamental shapes in the two orthogonal directions of the plan and the pure mode of rotation, calculated by vibration-analysis procedures in the corresponding directions. This enables simple component analysis of the dynamic response of the structure, where, depending on the orientation of the ground motion, the participation of the components is estimated and used to establish the envelope of displacements and interstorey drift of the structure in space. The finding is tested and confirmed in the numerical output of calculated responses.

000013223 7112_ $$aCOMPDYN 2009 - 2nd International Thematic Conference$$cIsland of Rhodes (GR)$$d2009-06-22 / 2009-06-24$$gCOMPDYN2009
000013223 720__ $$aPardalopoulos S., J.$$iPantazopoulou S., J.
000013223 8560_ $$ffischerc@itam.cas.cz
000013223 8564_ $$s1133040$$uhttps://invenio.itam.cas.cz/record/13223/files/CD313.pdf$$yOriginal version of the author's contribution as presented on CD, section: Seismic safety assessment of structures - iii (MS).
000013223 962__ $$r13074
000013223 980__ $$aPAPER