000018482 001__ 18482
000018482 005__ 20170118182224.0
000018482 04107 $$aeng
000018482 046__ $$k2017-01-09
000018482 100__ $$aHajirasouliha, Iman
000018482 24500 $$aOptimum Seismic Load Distribution for Performance-Based Design of Multi-Storey Structures on Different Soil Profiles

000018482 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018482 260__ $$b
000018482 506__ $$arestricted
000018482 520__ $$2eng$$aStructural configuration plays an important role on the seismic behaviour of structures. In recent earthquakes, structures with inappropriate distributions of strength and stiffness had inadequate performance due to configuration problems or wrong conceptual design. In the conventional seismic design methods, height-wise distribution of equivalent seismic loads seems to be related implicitly on the elastic vibration modes. Therefore, the employment of such a load pattern does not guarantee the optimum use of materials in the nonlinear range of response. In this study, a new optimisation method is used to find optimum lateral force distribution for seismic design of regular and irregular shear-buildings to achieve minimum structural damage. The proposed approach is based on the concept of uniform distribution of damage where the structural properties are modified so that inefficient material is gradually shifted from strong to weak areas of a structure. It is shown that the seismic performance of such a structure is better than those designed conventionally. By conducting the optimisation algorithm on shear-building models with various dynamic characteristics subjected to 75 synthetic spectrumcompatible earthquakes, the effects of target ductility demand, fundamental period, seismic excitation, number of storeys, damping ratio, ground motion intensity and soil profiles are investigated on the optimum distribution pattern. Based on the results of this study, a general load pattern is proposed for seismic design of regular and irregular building structures that is a function of soil type, fundamental period of the structure and the target ductility demand. It is shown that using the proposed load pattern leads to a more efficient use of structural materials and better seismic performance.

000018482 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018482 653__ $$aSeismic Design; Optimisation; Ductility; Load Distribution

000018482 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018482 720__ $$aHajirasouliha, Iman$$iPilakoutas, Kypros$$iMoghaddam, Hassan
000018482 8560_ $$ffischerc@itam.cas.cz
000018482 8564_ $$s276051$$uhttps://invenio.itam.cas.cz/record/18482/files/1544.pdf$$yOriginal version of the author's contribution as presented on USB, paper 1544.
000018482 962__ $$r16048
000018482 980__ $$aPAPER