To provide an interposition jacking apparatus capable of installing a split caisson-body with an excellent accuracy with securing cutoff properties when the split caisson bodies are juxtaposed by an interposition jacking method in construction of a tunnel of a large section, and a split caisson-body interposition jacking method.
An interposition pipe-jacking machine 1 is composed of an external cylinder 2, an internal cylinder 3, in which a part can be slid in the external cylinder 2, an interposition jack 4 in the external cylinder 2 and a reaction-receiving cylindrical body 5 being mounted in the internal cylinder 3 and transmitting a reaction by an jack 4 to the split caisson bodies 8 at rears. The interposition pipe-jacking machine 1 is further composed of a rectangular or square-shaped outercoat 6 mounted on the outer periphery of the external cylinder 2. In the interposition pipe-jacking machine 1, a sealant 7 is arranged in an opening between the external cylinder 2 and the internal cylinder 3, a groove 61 extended in the tunnel extending-direction is formed to the outer peripheral surface of the outercoat 6 and the external shapes of the external cylinder 2 and the internal cylinder 3 are molded in similar figures respectively in a rectangle, in which a circular or corner section is curvature-molded, or a square, in which the corner section is curvature-molded. The split caisson bodies 8 are installed by the interposition jacking method by such an interposition pipe-jacking machine 1.
YUGUCHI MASAKI
OHATA YUTAKA
KOYANAGI YOSHIRO
HATTORI YOSHIFUMI
KADOTA KATSUMI
SUGIMORI MAKOTO
HASHIMOTO HIROHIDE
WAKABAYASHI MASANORI
NAKANO MASAAKI
ARAKI DAISUKE
ISHIKAWAJIMA HARIMA HEAVY IND
ISHIKAWAJIMA KENZAI KOGYO KK
KIDOH CONSTRUCTION CO LTD
Yuichi Kasai
Masaharu Yokoyama