Role of structural details in progressive collapse of precast RC structures

Nowadays, the structural robustness is one of the most important challenges in structural engineering. During last years, several studies have been carried out to develop design strategies for mitigation of progressive col lapse risk through the achievement of sufficient robustness levels. However, most of the research has focused on cast in-situ concrete, with minor attention to precast structures. Therefore, a considerable effort to improve the knowledge about this issue is required. In this paper, different connection types and diaphragm configurations are analyzed to better understand their contribution when removing load-bearing elements (e.g. columns) in the alternate load path method. Special emphasis is given on structural detailing for distributed ties