Shaking table testing of a multi-storey post-tensioned timber building

This paper describes the preliminary results of shaking table testing of a post-tensioned timber framed building performed in the structural laboratory of the University of Basilicata in Potenza, Italy. This experimental campaign is part of a series of experimental tests in collaboration with the University of Canterbury in Christchurch, New Zealand. The specimen is a 3-dimensional, 3-storey timber frame building, 2/3rd scaled and made up of frames in both directions composed of post-tensioned timber. During the testing programme the specimen will be tested both with and without the addition of dissipative steel angles which are designed to yield at a certain level drift. These steel angles release energy through hysteresis during movement thus increasing damping. This paper discusses the testing set-up, modelling methods and preliminary experimental dynamic tests. During the preliminary stage of testing, the specimen has been subjected to hammer impact excitations, sine-sweep ground motion and one natural earthquake record with a low level of seismic loading. The seismic response has been compared with numerical predictions using the finite element program SAP2000 in terms of periods of vibrations and a time-history response.