Criteria for the structural analysis of precast buildings with dissipative connection systems of cladding wall panels

With reference to the connections of cladding wall panels of precast buildings, different types of dissipative devices have been recently proposed. They have been developed based on a comprehensive theoretical study and experimental verification. A problem with the method of structural analysis is still pending to allow for practical application of these devices in the design and execution of the overall construction in which they are installed. In general, non-linear time-history dynamic analysis can be applied on a 3-D model inclusive of frame, panels and their connections. However, this approach is demanding and not handy for the current design practice. A linear static or modal dynamic analysis based on the response spectrum could be applied, but at present the pertinent force-reducing behaviour factor is not given by the codes. Some simplified approximate approaches are hence presented in this paper, referring in particular to a friction based dissipative device to be used both in vertical and horizontal panels and to a plastic dissipative device to be used in horizontal panels. This latter, further to new constructions, can be applied also for the retrofitting or strengthening of existing buildings.