Simulation of self-centring fibre-reinforced concrete columns

A self-centring, segmentally precast concrete column system is considered for bridges in highly seismic regions to mitigate the problem of residual displacements. Residual displacements in bridge columns can occur following severe earthquakes, and are a key indicator of post-earthquake functionality. The column system makes use of unbonded, post-tensioned steel tendons to provide self-centring to the columns, and incorporates a ductile, fibre-reinforced, cement-based composite to dissipate hysteretic energy and improve the damage tolerance of the columns. Large-scale experiments on the column system were conducted under cyclic loading, and are simulated using finite-element analysis. The goal of the simulations is to validate the ability of the finite-element models to capture the cyclic response of the columns with respect to global structural response (lateral load against displacement response) and the evolution of damage and failure modes of the columns. The models were found to perform well. The models were then used to assess column behaviour when changes are made to the mechanical properties of ductile, fibre-reinforced material, and to evaluate possible benefits that can be achieved.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/17550777
• Authors:
  • LEE, W K
  • Billington, S L
• Publication Date: 2008

Language

• English

Media Info

• Pagination: 77-84
• Serial:
  • ENGINEERING AND COMPUTATIONAL MECHANICS (PROCEEDINGS OF THE ICE)
  • Volume: 161
  • Issue Number: EM2
  • ISSN: 1755-0777

Subject/Index Terms

• TRT Terms: Bridge piers; Failure; Fibers; Finite element method; Loss and damage; Mathematical models; Posttensioning; Reinforced concrete; Reinforcing materials; Repeated loads; Seismicity; Simulation; Support piles
• ITRD Terms: 3434: Bridge pier; 1614: Damage; 5520: Failure; 4557: Fibre; 6490: Finite element method; 6473: Mathematical model; 3399: Pile; 4789: Post tensioning; 4794: Reinforced concrete; 3471: Reinforcement (in mater); 5588: Repetitive loading; 5731: Seismic; 9103: Simulation
• Subject Areas: Bridges and other structures; Design; Geotechnology; Materials; I24: Design of Bridges and Retaining Walls; I32: Concrete; I43: Rock Mechanics;

Filing Info

• Accession Number: 01109611
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: Aug 25 2008 8:48AM