Soil-Foundation-Structure Interaction of Long-Span Bridge Structures

The Soil-Foundation-Structure Interaction (SFSI) effects considering a kinematic condition have been implemented during the retrofit evaluation of the Dumbarton and Antioch bridges in California. These are long-span bridge structures supported on pile foundations, and seismic ground excitation will vary with depth along the pile length. The effects of depth-varying ground motion were rigorously addressed in the analysis. Substructure models were used to reduce the number of degrees of freedom of the bridge model. This approach employs a bridge model without explicit foundation and yet it takes into account the effects of depth varying ground motions. The foundation substructure in the bridge model was represented by a linear 6x6 stiffness matrix representing the entire soil-pile system and a set of kinematic ground motion representing effective shaking arising from the depth-varying motions acting along the pile.

• Corporate Authors:

  Multidisciplinary Center for Earthquake Engineering Research

  State University of New York, 107 Red Jacket Quadrangle, P.O. Box 610025
  Buffalo, NY  United States  14261-0025
• Authors:
  • Shamsabadi, Anoosh
  • Law, Hubert K
  • Zand, Amir
• Conference:
  • Sixth National Seismic Conference on Bridges and Highways
  • Location: Charleston SC, United States
  • Date: 2008-7-28 to 2008-7-30
• Publication Date: 2008

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; Photos; References;
• Pagination: 10p
• Monograph Title: Sixth National Seismic Conference on Bridges and Highways: Seismic Technologies for Extreme Loads

Subject/Index Terms

• TRT Terms: Bridge foundations; Bridge substructures; Foundation soils; Long span bridges; Retrofitting; Seismicity; Soil structure interaction
• Identifier Terms: Antioch Bridge; Dumbarton Bridge
• Geographic Terms: California
• Subject Areas: Bridges and other structures; Geotechnology; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 01355910
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 28 2011 8:40AM