Marzieh Afsary - Master Student, Kharazmi University, Tehran, Iran
Jafar Keyvani Ghamsari - Department of Civil Engineering, Kharazmi University, Tehran, Iran

In this paper, the seismic performance of steel bundled tube structures subjected to near-field records by directivity effect is investigated. IDA (Incremental Dynamic Analysis) that is a powerful and step-by-step method is used. By limiting the intensity of records in the range of very high seismic region of Iranian Seismic code 2800 as the site of near-field records, IDA procedure is summarised and acceptable responses aregained. This procedure approves the good seismic performance of bundled tube structures as high-rise buildings.

bundled tube structures, Tall buildings, IDA procedure, near-field earthquakes