| 摘要 |
A selective reinforcement structure of pipes for high voltage cable is provided to prevent damage due to excessive load at the pipes by reinforcing the pipes from external pressure or impact by filling with cement mortar or hard foam. Cement mortar is filled into a space within a semi-circular shaped corrugated tube(25). Groove parts and convex parts are successively and repeatedly formed in a longitudinal direction. An input hole(35) is formed at one side of a wall. A separate supporter(38) is formed as a cohesive zone in the projected part of the convex parts. A tightening iron core is inserted into the supporter. |
