THE LAST TUBE OF IMMERSED TUBE AND THE LAST JOINING METHOD

摘要

PROBLEM TO BE SOLVED: To provide the last tube of an immersed tube and the last joining method capable of being easily joined by absorbing even if there are some deviation in the existing tube bodies in a method for making the last joining between the existing tubes and the last tube. SOLUTION: In the last tube 1 for the last joining inserted and installed between the existing tubes A and B, the last tube 1 is divided in the direction of the axis, both divided tube bodies 1a and 1b are connected with an expansible joint 3 such as bellows 3a or the like forming a steel plate having cut-off efficiency along the circumferential wall in a corrugated form, bulk heads 5a and 5b are provided inside of the tube bodies 1a and 1b located on both sides of the expansible joint 3 to form a pressure chamber 6 capable of pouring and discharging water and a pressurizing pump 15 making water pressure inside of the pressure chamber 6 higher than the outside water pressure. COPYRIGHT: (C)2005,JPO&NCIPI