| 摘要 |
A prefabricated manhole for underground power transmission is provided to shorten a period of construction, to cut down the cost of construction and to obtain the best quality by forming in a strong type using steel bars, fixing bars and connecting bars. Disclosed is a prefabricated manhole for underground power transmission composed of many vertical bodies(32) and plural ring type perpendicular concrete bodies(11) projected to the center of the vertical main bodies and coupled in stages by steel bars(14), wherein the vertical body contains retreated grooves(17) formed on a socket and a spigot of two sides to fix projecting plate packings(16) for preventing the leakage of water, fixing bars(22) formed on each inner corner and coupled with a fixing bracket formed in an inner space to fix plural vertical bodies effectively, and connecting members(23) formed on two lower sides and assembled with connecting members of another vertical body with a fixing plate(24) and connecting bars(26) to fix a main body(10) on the concrete surface safely. |
