| 摘要 |
PURPOSE: A construction method of a structure for underground excavation is provided to execute works simply, evenly and rapidly and to complete works in a short time. CONSTITUTION: The construction method of a structure for underground excavation comprises the steps of forming a cylindrical pipe(P) with concrete or a steel segment(1), dividing a joint of a successive cylindrical pipe(P') into steel segment(1a), installing a temporary structure composed of a honeycomb fiber block(4), a horizontal plate(8) for an inner wall formation and a crisscross wedge(3) for a fiber block adhesion in the cylindrical pipe(P), then removing the segments(5,5',5"), a wedge(3a) and a fiber block of the part to be overlapped with a successive cylindrical pipe(P'), overlapping a successive cylindrical pipe(P'), injecting grouting solutions in grouting injection holes installed on the upper and lower adjacent sides to the front cylindrical pipe(P), installing a temporary structure in the successive cylindrical pipe(P') and removing a temporary structure except the horizontal plate(8) and the fabric block, connecting many cylindrical pipes to be overlapped by welding upper and lower parts where successive cylindrical pipes(P') of the cylindrical pipe(P) meet repeatedly, supporting the upper and lower parts where each cylindrical pipe meets by V-shaped bearing bars, installing reinforcing bars connected with upper and lower reinforcement joints and partition walls for anti-sagging concrete inward, then placing and curing concrete, and removing horizontal pipes(8), fiber blocks and the segment under each cylindrical pipe to form an inner wall.
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