CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

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

Kristoffer Ekholm (Institutionen för bygg- och miljöteknik, Konstruktionsteknik) ; M. Ekevad ; Robert Kliger (Institutionen för bygg- och miljöteknik, Konstruktionsteknik)
Journal of Bridge Engineering (1084-0702). Vol. 19 (2014), 9,
[Artikel, refereegranskad vetenskaplig]

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.

Nyckelord: Finite-element method (FEM), Interlaminar slip, Stress-laminated timber deck, Nonlinear modeling

Denna post skapades 2014-10-20.
CPL Pubid: 204569


Läs direkt!

Länk till annan sajt (kan kräva inloggning)

Institutioner (Chalmers)

Institutionen för bygg- och miljöteknik, Konstruktionsteknik



Chalmers infrastruktur