The invention relates to the technical field of
immersed tube tunnel construction, in particular to a segmented
prefabrication method of
immersed tube joints.The
prefabrication period of a single tubejoint can be remarkably shortened, the
prefabrication cost of a single joint cannot be increased greatly, a reinforcement cage or tube joints cannot be frequently jacked or cannot frequently ascend and descend in the prefabrication link, the
waiting period that the tube joints reach the strength required by moving can be shortened, the number of times of moving is obviously reduced, the crack control difficulty can be reduced easily, the forming quality of immersed tubes is improved, and then the
engineering quality is improved. Meanwhile, through the arrangement of a
steel bar binding area and a pouring area and matching of the reciprocating moving positions of
bed-jigs and a formwork in the method, the occupied area of the prefabrication area of a
single tube joint is compact, multipleprefabrication
assembly lines can be arranged in a width-limited site easily, arrangement of a prefabrication factory is facilitated, a hoisting
system does not need to be erected in the moving process of the reinforcement cage, the
bed-jigs and the formwork, safety is good, construction is convenient, and the construction period can be further shortened easily.