In the present work, the safety of existing traditional timber trusses is evaluated, with
particular emphasis on the structural robustness. Traditional Portuguese timber trusses are
analyzed probabilistically, using the information provided in the JCSS model code,
combined with action and resistance models provided in the Eurocodes.
Robustness is evaluated through introduction of a localized defect, simulating
deterioration, construction error or damages. The comparison between the reliability
index considering a defect and the corresponding index for an intact structure is defined
as a measure of susceptibility to local damage.
The reliability index is computed using Monte-Carlo simulation combined with linear
elastic finite elements for different examples.Cost Action E55 “Modelling of timber performance”
