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۱Optimal Structural Weight for Flexible–Base Buildings Under Strong Ground Motion Excitations
نویسنده(ها):
اطلاعات انتشار: Asian journal of civil engineering، هفدهم،شماره۴، Jun ۲۰۱۶، سال
تعداد صفحات: ۲۰
In this paper, an optimization methodology proposed for the achievement of optimal (minimum) structural weight for flexible–base shear buildings under earthquake excitation. The underlying soil is considered as a homogeneous half–space which is replaced by a simplified 3–DOF system, based on the concept of Cone Models. Through intensive nonlinear dynamic analyses of buildings with consideration of soil–structure interaction (SSI) effect subjected to a group of artificial earthquakes, and using uniform distribution of inter–story ductility demand over the height of structures, an optimization procedure for seismic design of inelastic shear–buildings incorporating SSI effects is developed to achieve minimum structural weight. It is shown that the seismic performance of such a structure is superior to those designed by code–compliant seismic load pattern such that the optimized structures experience significantly less structural weight as compared with those designed based on ASCE\SEI 7–10 load pattern.
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