Innovative Joints with post-tensioned cables and dampers: analytical and numerical modelling

The innovative joints described in the present paper show rigidities comparable to those of welded joints and allow to dissipate the seismic energy in plastic field, even with small deformations, by means of particular elements. They are also able to self-centre the system at the end of the action of the cyclic loads through post-tensioned cables, avoiding plastic deformations in the column and the beam. A general analytical method for the behaviour of innovative joints with post-tensioned cables and dampers has been validated through experimental results available in literature for two types of joints. The results were also compared with those deriving from a three-dimensional numerical model showing again a good agreement.