Effectiveness of Soil-Structure Interaction and Dynamic Characteristics on Cable-Stayed Bridges Subjected to Multiple Support Excitation

ATEŞ Ş., Tonyali Z., Soyluk K., SAMBEROU A. M. S.

INTERNATIONAL JOURNAL OF STEEL STRUCTURES, cilt.18, sa.2, ss.554-568, 2018 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 18 Sayı: 2
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1007/s13296-018-0069-z
  • Dergi Adı: INTERNATIONAL JOURNAL OF STEEL STRUCTURES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.554-568
  • Anahtar Kelimeler: Multiple support excitations, Spatial variability of the ground motion, Cable-stayed bridges, Soil-structure interaction, Dynamic impedance functions, VARYING GROUND MOTIONS, LONG-SPAN BRIDGES, SEISMIC RESPONSE, EARTHQUAKE EXCITATIONS, SUSPENSION BRIDGES, FOUNDATION, SPECTRUM, MODEL, PILES, TIME
  • Karadeniz Teknik Üniversitesi Adresli: Evet

Özet

The purpose of the study is to determine the effects of multiple support excitations (MSE) and soil-structure interaction (SSI) on the dynamic characteristics of cable-stayed bridges founded on pile foundation groups. In the design of these structures, it is important to consider the effects of spatial variability of earthquake ground motions. To do this, the time histories of the ground motions are generated based on the spatially varying ground motion components of incoherence, wave-passage, and site-response. The effects of SSI on the response of a bridge subjected to the MSE are numerically illustrated using a three-dimensional model of Quincy Bayview cable-stayed bridge in the USA. The soil around the pile is linearly elastic, homogeneous isotropic half space represented by dynamic impedance functions based on the Winkler model of soil reaction. Structural responses obtained from the dynamic analysis of the bridge system show the importance of the SSI and the MSE effects on the dynamic responses of cable-stayed bridges.