| 摘要 |
PROBLEM TO BE SOLVED: To provide an underground structure in which bar arrangement work can be easily performed in a section of transition from a concrete skeleton to a steel shell skeleton.SOLUTION: In an underground structure, a concrete skeleton A and a steel shell skeleton B are concurrently used. The steel shell skeleton B has a plurality of steel segments 60, 60,... which are installed along an earth retaining wall W in a boundary part between the steel shell skeleton B and the concrete skeleton A. Each of the steel segments 60, 60,... has a bottomed prism-shaped cylindrical part having an opened top surface. A main reinforcement 15 of a side wall part is arranged in an internal space of the cylindrical part, and the internal space is filled with concrete. |
