PURPOSE: To reduce the occupied area on the ground so as to reduce the effect on the road-surface traffic, beautiful sight, existing burial facilities, and reduce the volume of earth to be excavated and the volume of earth to be refilled to economically construct an underground space.
CONSTITUTION: A supporting pile 11 is driven from the ground surface, and a starting shaft 12 for operators driving curved pipes, etc., is constructed around the upper end part of the supporting pile 11. Plural curved columnar bodies 13 made of downward-curved pipe, etc., are driven from the starting shaft 12 in a radial manner. Then, the upper end part of the supporting pile 11 and the curved columnar bodies 13 are integrally connected with each other to form an umbrella ribs-shaped supporting body 10 under the ground. The ground covered with the supporting body 10 is excavated, the excavated earth and sand are conveyed through the starting shaft 12, and the surrounding ground is lined to construct an underground space.
| JP2013083074 | CONNECTION DEVICE |
| JP2023031590 | PILE HEAD JOINT STRUCTURE |
TOYODA TOSHINORI
AOKI KENICHI
TSURUOKA SUSUMU
YAMAMOTO MINORU
FUJITA CORP
TOYODA TOSHINORI
CHIZAKI KOGYO KK
OKUMURA CORP
HAZAMA GUMI
MORIMOTOGUMI KK
SATO KOGYO