AN INVESTIGATION OF THE EFFECTIVENESS OF EXISTING BRIDGE DESIGN METHODOLOGY IN PROVIDING ADEQUATE STRUCTURAL RESISTANCE TO SEISMIC DISTURBANCES, PHASE III: NONLINEAR SOIL-STRUCTURE INTERACTION OF SKEW HIGHWAY BRIDGES

Four different mathematical model elements are incorporated into the three dimensional computer program which possess the capability of performing linear or nonlinear-time-history dynamic response analysis. Solid finite element modelling is used for the backfill soils and the abutment walls. The bridge deck, pier columns and pier caps are modelled using prismatic beam elements. A frictional element is used to model the discontinuous behavior at the interfaces of the backfill soils and abutments. Boundary elements provide foundation flexibility at the base of columns supported on either piles or spread footings. In the nonlinear mathematical model the effects of separation, impact and slippage at the interfaces between the abutment walls and the backfill soils are taken into consideration. Computational efficiency is achieved through the use of mathematical techniques including matrix reduction procedures, interaction procedures and variable time steps. A number of analytical solutions are carried out considering a skewed three-span bridge with backfill soils. Different mathematical models are used to study the parameters which may influence the seismic response of the bridge. /Author/

• Supplemental Notes:
  • Sponsored by DOT, Federal Highway Administration.
• Corporate Authors:

  University of California, Berkeley

  Campus Research Office, 118 California Hall
  Berkeley, CA  United States  94720
• Authors:
  • Chen, M
  • Penzien, J
• Publication Date: 1977-8

Media Info

• Features: Figures; Tables;
• Pagination: 107 p.

Subject/Index Terms

• TRT Terms: Abutments; Backfilling; Boundary value problems; Bridge design; Bridges; Computer programs; Dynamic loads; Finite element method; Highway bridges; Mathematical models; Seismology; Skew bridges; Soil structure; Structural analysis; Structural design
• Uncontrolled Terms: Boundary conditions; Dynamic response
• Old TRIS Terms: Backfills; Finite elements; Resistance
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00174421
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: FHWA-RD-77-169 Final Rpt., FCP 35A2012
• Contract Numbers: DOT-FH-11-7798
• Files: TRIS
• Created Date: Jun 14 1978 12:00AM