Modeling Slip in Stress-Laminated Timber Bridges: Comparison of Two Finite-Element-Method Approaches and Test Values

Finite-element (FE) simulations of the deformation behavior of a 5.4-m-long, 8-m-wide, and 0.27-m-thick stress-laminated timber bridge deck were conducted. The simulation results were compared with full-scale test results when using a load resembling an axle load placed near the edge and when cycling the load between a high and low value. Two separate approaches to nonlinear FE modeling were used. The first FE model simulates a frictional slip between the glulam beams with an elastic-plastic material model. The second FE model simulates a frictional slip by modeling each discrete contact surface between each beam in the deck. The results show good agreement between simulation and test results and reveal that the simulation model that models contact surfaces produces slightly better results at the expense of a greater modeling effort and increased computational time. Hysteresis in the load versus deformation curves is clearly visible and was due to significant slip between the glulam beams, which was successfully simulated.

• Record URL:
  • https://doi.org/10.1061/(ASCE)BE.1943-5592.0000595
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/32947845
• Supplemental Notes:
  • © 2014 American Society of Civil Engineers.
• Authors:
  • Ekholm, K
  • Ekevad, M
  • Kliger, I R
• Publication Date: 2014-9

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: 04014029
• Serial:
  • Journal of Bridge Engineering
  • Volume: 19
  • Issue Number: 9
  • Publisher: American Society of Civil Engineers
  • ISSN: 1084-0702
  • Serial URL: http://ojps.aip.org/beo

Subject/Index Terms

• TRT Terms: Axle load force; Beams; Bridge decks; Deformation; Deformation curve; Finite element method; Hysteresis; Laminated wood; Mathematical models; Repeated loads; Simulation; Wooden bridges
• Subject Areas: Bridges and other structures; Highways; Materials; I35: Miscellaneous Materials;

Filing Info

• Accession Number: 01526573
• Record Type: Publication
• Files: TRIS, ASCE
• Created Date: May 29 2014 9:28AM