Title:
BEAM PENETRATING AFTER LOWER PART CASTING TYPE CAST-IN-PLACE PILE METHOD
Document Type and Number:
WIPO Patent Application WO/2011/068329
Kind Code:
A3
Abstract:
The present invention relates to a construction method of a cast-in-place pile buried with a steel frame stiffener. A casing is penetrated into the ground and a drilling rig is dug through the ground so that a drilled hole is formed reaching a target depth. After that, concrete is poured for additional drilling and an additional drilled hole in the state that the upper end of the casing, is fixed on the surface of ground. A steel frame stiffener joined with a penetration member at the front end thereof is inserted into the drilled hole so that the concrete, poured into the additional drilled hole, is penetrated by the penetration member to be cured in the penetration state. As the curing of the concrete in the additional drilled hole is completed, concrete is poured simultaneously with the pulling out of the casing, thereby finishing a pile. According to the present invention, the steel frame stiffener is stably penetrated into the concrete which is pre-poured into the lower end portion of the pile so that the construction accuracy of the cast-in-place pile may be improved. In addition, the concrete integrity may be kept in the target depth of the pile so that the structural stability may be secured. Furthermore, it is possible to omit the step of cutting the upper end portion of the casing, which is essentially involved in the penetration of the stiffener into the pre-poured concrete, thereby simplifying the process and reducing materials.
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Inventors:
HAN DONG DEOK (KR)
Application Number:
PCT/KR2010/008377
Publication Date:
September 15, 2011
Filing Date:
November 25, 2010
Export Citation:
Assignee:
DAEHAN FOUNDATION ENG CO LTD (KR)
HAN DONG DEOK (KR)
HAN DONG DEOK (KR)
International Classes:
E02D5/38; E02D5/46; E02D5/62
Foreign References:
| KR100657176B1 | 2006-12-13 | |||
| KR100543727B1 | 2006-01-20 | |||
| JPH0321705A | 1991-01-30 | |||
| JPS5413681B2 | 1979-06-01 |
Attorney, Agent or Firm:
KANG, Hyun Seok (823-33 Yeoksam-Dong, Kangnam-gu, Seoul 135-933, KR)
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Claims: