| 摘要 |
PROBLEM TO BE SOLVED: To provide a branch part structure of an underground construction, which can flexibly cope even with a branch part at which groove channels such as utility tunnels cross at an oblique angle, by preparing a plurality of precast corner wall members whose corner angles are adjusted, and facilitates construction thereof by connecting thereto ordinary box culverts as the groove channels. SOLUTION: In formation of the branch part structure, the corner wall members 1 each formed of side walls 3 erected from two mutually adjacent sides of a bottom slab 2, are set at four corners at intervals, and the box culverts 5 are each connected to both the mutually opposed side walls of the corner wall members to form the branch part Ha. The corner wall members are formed into a unitary body via the bottom slab by concrete poured on a bottom portion of the branch part, and an upper opening of the branch part is blocked with a top slab 7. COPYRIGHT: (C)2009,JPO&INPIT
|
