Behaviour factor for innovative massive timber shear walls

Abstract

Four massive wooden shear walls were analysed via experimental tests and numerical simulations. The specimens differ mainly in the method used to assemble the layers of timber boards: two of them are the well-known Cross-Laminated-Timber panels with glued interfaces, the other two are innovative massive timber panels adopting steel staples or wooden dovetail inserts to connect the layers. Quasi-static cyclic-loading tests were performed for each wall and main results are presented and analysed. A non-linear numerical model was calibrated on experimental results and used to perform non-linear dynamic analyses on specifically designed three-storey shear wall. The methods ensuring a reliable estimation of the intrinsic behaviour factor are presented and the definition of yielding and failure condition is discussed. The intrinsic behaviour factor values were calculated using results from non-linear dynamic analyses. Three limits of failure condition were analysed to estimate the correlated Peak Ground Acceleration and therefore the behaviour factor. A final interpretation of the obtained results is presented and some instructions about the choice of the suitable behaviour factor are given

Dynamic Simulation of an Irregular Masonry Building With Different Rehabilitation Methods Applied to Timber Floors

“…In this case, a phenomenological model with the non-linear hysteretic behaviour concentrated exclusively in the equivalent diagonal elements was adopted. This modelling strategy has already been used in literature to simulate the non-linear behaviour of deformable timber shear walls (e.g., [12]). The floor models were obtained subdivided the plan dimensions into a mesh of 6x4 floor modules (Figure 4a), having dimensions of 0.8x0.8m, in order to distribute the nodal masses ( Figure 4b) and to fit the discretization used in the wall modelling.…”

Effect of different modelling approaches on the prediction of the seismic response of multi-storey CLT buildings

“…in Ref. [22]. The advantages of the phenomenological modelling mainly regard the simplicity of the modelling that, nevertheless, can simulate the global behaviour of the wall including friction phenomena and second-order effects.…”

Seismic drift demands in multi‐storey cross‐laminated timber buildings

“…Accordingly, the benefits of CLT construction have underpinned the development of various building technologies involving different panel arrangements and connection details. In this regard, although the use of large CLT panels with a reduced number of on‐site joints has been traditionally favoured,() the advantages of small modular assemblages regarding their easier handling and improved energy dissipation capabilities are now being recognized …”