Effect of dynamic soil-bridge interaction modeling assumptions on the calculated seismic response of integral bridges

Erhan S., DİCLELİ M.

SOIL DYNAMICS AND EARTHQUAKE ENGINEERING, vol.66, pp.42-55, 2014 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 66
  • Publication Date: 2014
  • Doi Number: 10.1016/j.solidyn.2014.06.033
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.42-55
  • Keywords: Seismic response integral bridge, Soil-bridge interaction, Modeling, STEEL H-PILES, PERFORMANCE
  • Middle East Technical University Affiliated: Yes


In this study, the effect of soil-structure modeling assumptions and simplifications on the seismic analyses results of integral bridges (lBs) is investigated. For this purpose, five structural models of lBs are built in decreasing levels of complexity starting from a nonlinear structural model including close numerical simulation of the behavior of the foundation and backfill soil and gradually simplifying the model to a level where the effect of backfill and foundation soil is totally excluded. Nonlinear time history analyses of the modeled lBs are then conducted using a set of ground motions with various intensities representing small, medium and large intensity earthquakes. The analyses results are then used to assess the effect of modeling complexity level on the calculated seismic response of IBs. The nonlinear soil-bridge interaction modeling assumptions are found to have considerable effects on the calculated seismic response of IBs under medium and large intensity earthquakes.(C) 2014 Elsevier Ltd. All rights reserved.