| 摘要 |
PROBLEM TO BE SOLVED: To provide an inverted construction method capable of further shortening a construction period than the conventional inverted construction method when an underground structural body of a building is constructed. SOLUTION: After a primary excavation of the upper part of the inside of an earth retaining wall 1 is made, and a floor skeleton 4 on the first floor is constructed, a secondary excavation up to a floor level of the first basement is made, a first stage strut supporting 11 is erected under the first floor, a third excavation up to a position under a beam of the second basement is made at a dash by skipping over the first basement, a floor slab 6a on the second basement is precedently constructed, and work after fourth excavation in the lower part is carried out in parallel with rise work of the floor skeleton 5 on the first basement in the upper part (rise skeleton work on the second basement) by making the floor slab on the second basement as a boarder.
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