Exact Stability Calculation for Timber Beams and Columns

Exact Stability Calculation for Timber Beams and Columns

Van der Put, T.A.C.M.

Civil Engineering and Geosciences

Structural Engineering

2013-07-12

A derivation is given of simplified, exact stability design rules according to limit analysis, applied to timber beam-columns. These rules are lacking but are necessary to be able to provide real and calculable reliability as is required according to European pacts and laws. Necessary therefore are the obtained exact combined bi-axial bending, compression and shear strength equations with the exact equilibrium equations under biaxial loading. As for other materials the elastic-full plastic limit design approach is applied, which is already known to precisely explain and predict uniaxial bending strength behavior. The strength derivation is based on choosing the location of the neutral line. This provides the stress distribution in the beam cross section in the ultimate state for that case, providing the possibility to calculate the associated ultimate bending moments in both main directions combined with the ultimate normal- and shear forces. The derived general strength and equilibrium equations are simplified to possible elementary design equations, applicable for building regulation.

timber beams
limit analysis
stability design
bi-axial bending strength
OA-Fund TU Delft

http://resolver.tudelft.nl/uuid:59816f3f-2b87-4b76-98ae-80c6de80c7ca

https://doi.org/10.2174/1874-836820130508001

Bentham Open

1874-8368

The Open Construction and Building Technology Journal, 7, 2013

Institutional Repository

journal article

© 2013 Van der Put, T.A.C.M.
Licensee Bentham Open
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