Site-response effects on RC buildings isolated by triple concave friction pendulum bearings


ATEŞ Ş. , Yurdakul M.

COMPUTERS AND CONCRETE, cilt.8, ss.693-715, 2011 (SCI İndekslerine Giren Dergi) identifier

  • Cilt numarası: 8 Konu: 6
  • Basım Tarihi: 2011
  • Dergi Adı: COMPUTERS AND CONCRETE
  • Sayfa Sayıları: ss.693-715

Özet

The main object of this study is to evaluate the seismic response effects on a reinforced concrete building isolated by triple concave friction pendulum (TCFP) bearings. The site-response effects arise from the difference in the local soil conditions at the support points of the buildings. The local soil conditions are, therefore, considered as soft, medium and firm; separately. The results on the responses of the Isolated building are compared with those of the non-isolated. The building model used in the time history analysis, which is a two-dimensional and eight-storey reinforced concrete building with and without the seismic isolation bearings and/or the local soil conditions, is composed of two-dimensional moment resisting frames for superstructure and of plane elements featuring plane-stress for substructure. The TCFP bearings for isolating the building are modelled as of a series arrangement of the three single concave friction pendulum (SCFP) bearings. In order to investigate the efficiency of both the seismic isolation bearings and the site-response effects on the buildings, the time history analyses are elaborately conducted. It is noted that the site-response effects are important for the isolated building constructed on soft, medium or firm type local foundation soil. The results of the analysis demonstrate that the site-response has significant effects on the response values of the structure-seismic isolation-foundation soil system.