Title:
UNDERGROUND SKELETON CONSTRUCTING METHOD
Document Type and Number:
Japanese Patent JP2588075
Kind Code:
B2
Abstract:
PURPOSE: To construct the underground skeleton of a building almost with no manpower, and reduce construction pollutions such as noise, vibration, and ground subsidence by pumping of ground water.
CONSTITUTION: A retaining wall 1 and a cast-in-place pile 2 are constructed on the outer circumference and inner part of an underground body, respectively. An outer circumferential steel column 3 and a semi-PC steel column 4 are built in the retaining wall 1 and the internal pile 2, respectively. After primary excavation is conducted, a reinforced basket 5 for pressure-resisting slab is assembled on the excavated ground, a top slab 6 for reverse placing is constructed, and the reinforced basket 5 is lifted by a suspension wire 7 from the slab 6. Further, an excavation stabilizing solution plant 8 is placed on the top slab 6, and the ground under the slab is excavated to a determined depth by an underwater unmanned excavator 9. Underwater concrete is placed thereto to construct a pressure-resisting slab, and underground intermediate slabs are successively constructed from the upper floor while draining the water between the pressure-resisting slab and the retaining wall 1.
Inventors:
OONISHI YASUKAZU
Application Number:
JP16036191A
Publication Date:
March 05, 1997
Filing Date:
July 01, 1991
Export Citation:
Assignee:
FUJITA CORP
International Classes:
E02D29/00; (IPC1-7): E02D29/00
Attorney, Agent or Firm:
Shigefumi Okamoto (1 person outside)