SISTEMA DI CONNESSIONE TRA CONCI PREFABBRICATI PER LA REALIZZAZIONE DI UN ANELLO MODULARE PER TUNNEL, GALLERIE, CONDOTTE E SIMILI E ANELLO MODULARE COMPRENDENTE UN TALE SISTEMA DI CONNESSIONE

The present invention relates to a connection system (10) between segments for the construction of modular rings for tunnels, pipelines and the like, comprising: - a coupling seat (25), alongside a first lateral face (17) of a first prefabricated segment (11); - a corresponding coupling relief (27), projecting from a second lateral face (20) of a second prefabricated segment (12) arranged alongside said first prefabricated segment (11) with said second lateral face (20) alongside said first lateral face (17). The coupling relief (27) has a spacer collar (30), exiting from the second lateral face (20), and an anti-extraction coupling head (31) extending from the spacer collar (30) and having a larger transverse dimension than the corresponding transverse dimension of the spacer collar (30). The coupling seat (25) has: - an inlet opening (35) configured to enable the passage of the anti-extraction coupling head (31), - and a slot portion (36), open onto said inlet opening (35), which enables the sliding of the spacer collar (30) within it and is configured so as to prevent the slippage of the anti-extraction coupling head (31).