SEISMIC PERFORMANCE OF CONCRETE MULTI-COLUMN BENTS

As part of an ongoing investigation on seismic design of concrete bridges, two large-scale concrete multi-column bents were designed to state-of-the-art seismic design requirements and subjected to simulated earthquake loading at the University of California, San Diego. In detailing critical regions of the test units, in particular the cap beam/column connections, it was ensured that construction difficulties arising from reinforcement congestion would be eliminated. The design of the joints in the first test unit was simplified by using prestressing in the bent cap, which also facilitated introduction of precast construction for concrete multi-column bents. In the second test unit, joint reinforcement was minimized by utilizing efficient joint force transfer models. The competence of the joint reinforcement details, and hence the overall seismic performance of the bents, were examined by developing the maximum feasible shear demand in the joints. Design details and seismic performance of the multi-column test units are presented in this paper.

• Corporate Authors:

  California Department of Transportation

  1120 N Street
  Sacramento, CA  United States  95814
• Authors:
  • Sritharan, Sri
  • Priestley, MJN
  • Seible, F
• Conference:
  • Second National Seismic Conference on Bridges and Highways
  • Location: Sacramento, California
  • Date: 1997-7-8 to 1997-7-11
• Publication Date: 1997

Language

• English

Media Info

• Features: Figures; References;
• Pagination: p. 683-695

Subject/Index Terms

• TRT Terms: Beams; Bents; Columns; Concrete bridges; Earthquake resistant design; Joints; Load tests; Material reinforcement; Performance tests; Precast concrete; Prestressing; Structural connection
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00760132
• Record Type: Publication
• Files: TRIS, STATEDOT
• Created Date: Feb 4 1999 12:00AM