The Furukawa Electric Co., Ltd.

Hiroki Manabe

Yoshihiro Shimada

Kenichi Ishii

Takahiro Sasaki

Takeharu Yamaguchi

Hiroyuki Sakakibara

Takashi Hori

Toru Kagoura

Michimasa Watanabe

Masahiro Minamide

This resin trough body has an approximately U-shape cross-sectional shape that includes a bottom section and side sections on the two sides. Vertical reinforcement ribs are formed at a prescribed interval on the outer surface of both side sections of a trough body of a prescribed length. Further, near the front and back ends of the trough body, horizontal ribs are formed so as to link two vertical ribs. An accommodation space for accommodating a grating lid is formed by a pair of L-shape members being fixed with bolts to a fixing jig that has been attached to the horizontal ribs. The grating lid is accommodated in said accommodation space, and the grating lid is fixed to a bolt fixing section, which is a mounting hole formed in the horizontal plane of the L-shape members.

Structure for attaching grating lid onto resin trough body; trough track; trough track forming method; and grating lid

Protrusion portions and recess portions are formed on a metal layer. The protrusion portions are repeatedly formed in a lattice shape at a pitch of P. Similarly, the recess portions are repeatedly formed in the lattice shape at the pitch of P. The protrusion portions and the recess portions are arranged in the same arrangement direction and arranged shifted to each other by half the pitch in the arrangement direction. The protrusion portions and the recess portions are formed independently of each other without contacting each other. In order to allow a multilayer tape to reliably follow the bending deformations of a power cable (submarine cable) in all directions, in an arbitrary cross-section taken in the longitudinal direction of the multilayer tape (in the axial direction of an impermeable layer), the protrusion portions or the recess portions are necessarily arranged at predetermined intervals.

Submarine cable and multilayer tape for impermeable layer of same

Ocean floating installations () are disposed on the ocean. The ocean floating installations () float on the ocean with the lower part of the ocean floating installations () being fixed to the seabed by mooring ropes (). Each of the ocean floating installations () is connected at a connection part () to a cable (), which is a first cable. Each of the cables () is connected at a connection part () to a cable (), which is a second cable. In other words, the ocean floating installations () are connected to each other by the cables () and the cable (). A connection is established with the cables () at the connection parts () located on the seabed. In other words, the cables () are installed on the seabed.

Undersea cable, undersea cable installation structure, and method for installing undersea cable

In a flexible tube for fluid transport, a resin layer is on the outer periphery of an interlocked tube for shielding the fluid flowing within the interlocked tube. An internal-pressure-resistant reinforcing layer is on the outer periphery of the resin layer for reinforcing primarily against internal pressure, etc. of the fluid flowing within the interlocked tube. An axial-force reinforcing layer is on the outer periphery of the internal-pressure-resistant reinforcing layer for primarily suppressing the interlocked tube from deforming in the axial direction of the flexible tube. The axial-force reinforcing layer is formed from alternately winding two layers of reinforcing strips with a long pitch. The reinforcing strips are each configured from a metal strip, a resin layer that covers the strip, and the like. The resin layer is resin to which a microparticulate sulfide-trapping material has been added.

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Tokyo, Japan

Hiroki Manabe