| 摘要 |
PROBLEM TO BE SOLVED: To construct an earth retaining wall in proximity to an existing building in a short time by driving column members formed of H-shape steel, at constant spaces around the pit excavation predetermined ground, and pressing in support wall plates between the respective column members to form the earth retaining wall. SOLUTION: Column members 1 formed of H-shape steel are driven at constant spaces around a pit excavation predetermined position in the ground, and support wall plates 2 formed of steel plates are pressed in between the adjacent columns 1, 1 to form earth retaining walls 3. The inside of the earth retaining walls 3 is excavated to form a pit. With the earth retaining walls 3 as an outer form of a concrete form, an inner form is disposed inside, and concrete is placed to form a concrete side wall. The respective column members 1 and support wall plates 2 are pulled out and removed, and finally concrete is placed at the bottom part of the pit. An auger machine and a support wall plate press-in excavating device fitted to a crawler crane are used to drive and remove the column members 1 and support wall plates 2. The earth retaining wall can therefore be formed in proximity to an adjacent existing building T in a short period of time.
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