Influence of structural irregularity on the q-behaviour factor of light-frame timber buildings by means of incremental dynamic analysis

This paper investigates the role of sheathing-to-framing connection ductility in evaluation structural q-behaviour factor for Light-Frame Timber (LFT) buildings, by means Incremental Dynamic Analyses (IDA). approach allows to consider nonlinear cyclic behaviour walls, which cannot be taken into account with static approaches used most available literature on LFT buildings. To this aim, Finite Element wall models, preliminary calibrated towards a full-scale experimental test, are built study six case-study both regular and non-regular, 2, 3 or 4 storeys, were designed according Eurocode Capacity Design provisions. Parametric analyses performed varying displacement-ductility panel. Finally, numerical results discussed terms factor, its sensitivity irregularities, respect existing code provisions timber