Ricerc@Sapienza

This contribution illustrates the main features of an original parametric Finite Element (FE) model developed using OpenSEES in order to study the response of timber light-frame shear walls under earthquake. Within the proposed FE model, the framing system and the sheathing panel are modeled as elastic elements while the connections are simulated through zero-length non-linear elements. In particular, it is assumed that the overall nonlinear seismic response of the wall rests on the cyclic behavior of the connections.

The seismic performance of timber light-frame shear walls is investigated in this paper with a focus on energy dissipation and ductility ensured by sheathing-to-framing connections. An original parametric finite element model has been developed in order to perform sensitivity analyses. The model considers the design variables affecting the racking load-carrying capacity of the wall. These variables include aspect ratio (height-to-width ratio), fastener spacing, number of vertical studs and framing elements cross-section size.