Title:
CONSTRUCTION METHOD OF CAST-IN-PLACE CONCRETE PILE
Document Type and Number:
Japanese Patent JP2022165705
Kind Code:
A
Abstract:
To provide a construction method of a cast-in-place concrete pile for rationally and distinctively placing concretes having different strengths between an upper part and a lower part.SOLUTION: A method for constructing a cast-in-place concrete pile 1 includes a switching step of placing upper concrete 3 from below a prior placing height HL of lower concrete 2, thereby pushing up a part of the lower concrete 2 up to a predetermined height. The method performs, before the switching step, a slump acquisition work of acquiring a slump from a standing slump test using concrete composed of blending similar to the lower concrete 2, and a switching height estimation work of executing a flow analysis using numerical fluid dynamics based on the slump, and estimating a relation between the slump and a switching height h that is a height difference between the prior placing height HL and the predetermined height.SELECTED DRAWING: Figure 3
Inventors:
TOMITA NATSUMI
ISHIZAKI SADAYUKI
NARIHARA HIROYUKI
ISHIZAKI SADAYUKI
NARIHARA HIROYUKI
Application Number:
JP2021071166A
Publication Date:
November 01, 2022
Filing Date:
April 20, 2021
Export Citation:
Assignee:
TAISEI CORP
International Classes:
E02D5/34
Attorney, Agent or Firm:
Patent Attorney Corporation Isono International Patent and Trademark Office