SEISMIC JOINT FOR UNDERWATER FLOATING TUNNELS

摘要

"SEISMIC JOINT FOR UNDERWATER FLOATING TUNNELS" Seismic joint for underwater floating tunnels consisting of: (a) a portion, having a transversal section which is essentially the same as the one of the tunnel, said portion is capable of being rigidly fastened to the land, at one end (A) thereof, and of being elastically constrained to the tunnel, at its other end (B); (b) a plurality of means capable of performing an elastic effect and a damping effect, interposed between the end (B) of the portion of the join, and the tunnel; (c) a collar welded onto the external surface of the end of the tunnel facing the end (B) of the portion, and capable of sliding on and along the external surface of said joint portion; (d) means for providing a water tight seal between the internal surface of the collar and the external surface of said joint portion.