Stress-Laminated Timber Bridge Decks: Non-linear Effects in Ultimate and Serviceability Limit States
Paper i proceeding, 2013

Stress-laminated timber bridge decks made of glulam beams are advantageous when it comes to their strength, production and construction costs. The thickness of a deck with a specified span and width is typically determined by considering requirements relating to strength and stiffness stipulated in a design code and specifically in Europe the Eurocode 5. Linear stress calculations do not have inherent potential to simulate slip or gaps between beams, but experience from finite element (FE) simulations and full-scale tests shows that these nonlinear effects from slip and gaps between glulam beams exist. In this paper, comparisons between linear and non-linear FE results for two bridge decks with different spans, widths and thicknesses are made. Separate comparisons are made in the ultimate limit state (ULS) and the serviceability limit state (SLS). It is shown that non-linear effects may be important and should be considered, especially in the case of thin decks.

timber bridge deck

FEM

prestressed

finite element

stress laminated

Författare

Mats Ekevad

Peter Jacobsson

Robert Kliger

Chalmers, Bygg- och miljöteknik, Konstruktionsteknik

Proceedings of International Conference on Timber Bridges 2013- Las Vegas, Nevada USA

Styrkeområden

Building Futures

Ämneskategorier

Infrastrukturteknik

Mer information

Skapat

2017-10-07