000011493 001__ 11493
000011493 005__ 20141205155916.0
000011493 04107 $$aeng
000011493 046__ $$k2008-10-12
000011493 100__ $$aSadashiva, Vinod.K.
000011493 24500 $$aDetermination of Irregularity Limits

000011493 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011493 260__ $$b
000011493 506__ $$arestricted
000011493 520__ $$2eng$$aVertical and horizontal regularity provisions in the current New Zealand seismic design standard, NZS 1170.5 (SNZ 2004) are based on overseas codes. These regularity limits are based on engineering judgment rather than on rigorous analysis. This paper outlines a simple and efficient method of determining structural irregularity limits for structures designed using different analysis procedures. As an example, the methodology is applied to simple models of shear-type structures with different amounts of mass irregularity located at different locations within the structure, all designed in accordance with the Equivalent Static Method of NZS 1170.5, including P-Delta effects. These models were then analysed using inelastic dynamic time history analysis for the 20 SAC 10 in 50 earthquake records for Los Angeles. The additional median interstorey drift responses due to mass irregularity was computed which can be limited to an acceptable level. Irregularity limits for use in design can then be defined for a specified level of confidence.

000011493 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011493 653__ $$aStructural Irregularity Limits, Vertical Mass Irregularity, Design Standards

000011493 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011493 720__ $$aSadashiva, Vinod.K.$$iMacRae, Gregory.A.$$iDeam, Bruce.L.
000011493 8560_ $$ffischerc@itam.cas.cz
000011493 8564_ $$s151721$$uhttps://invenio.itam.cas.cz/record/11493/files/05-01-0513.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-01-0513.
000011493 962__ $$r9324
000011493 980__ $$aPAPER