Fragility analysis of structural pounding between adjacent structures arranged in series with various alignment configurations under near-field earthquakes

Abstract A major cause of local to total damages is related structural pounding in a large number past earthquakes. In general, these collisions take place as result differences the dynamic characteristics colliding structures. To acquire better perception behavior structures, this paper, three structures featuring different heights are modeled series and with various configurations next each other OpenSees. determine collision effects 4-, 8- 12-story adjacent reinforced concrete special moment resisting frames were considered. Then, by conducting an incremental analysis, their seismic limit state capacities assessed via 20 near-field record subsets recommended FEMA-P695. At last, for above buildings separation distances configurations, fragility curves determined, probability exceedance from primary Hazus-MH failure criteria was estimated. addition, results compared those obtained when phenomenon did not have phenomenon. The analyses show that arranging greatly affects collapse case shorter structure placed middle two taller it most critical situation among all case, higher reduction observed performance levels.