Title:
CONSTRUCTION METHOD OF ROTARY PRESS-IN STEEL PIPE PILE
Document Type and Number:
Japanese Patent JP2016169591
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide bearing power of a steel pipe pile equal to or more than that made by a conventional rotary press-in method, besides being capable of reliably arriving at the target depth by rotary press-in, by improving workability by reducing penetration resistance.SOLUTION: A construction method of a rotary press-in steel pipe pile includes a first step of inserting a vibration rod 2 inside a steel pipe pile 1 and penetrating the steel pipe pile 1 in a state of vibrating the vibration rod 2 into the ground by rotatably pressing, a second step of making the steel pipe pile 1 reach a pile arrival target depth P1 thereof in a support layer G1 and a third step of extracting the vibration rod 2 from the inside of the steel pipe pile 1 while vibrating the same after the vibration rod 2 reaches a rod deepest target depth P2, and sediment Ga entering into the ground Gb and the steel pipe pile 1 just under the steel pipe pile 1 is compacted while extracting the vibration rod 2.SELECTED DRAWING: Figure 2
Inventors:
MORIYASU SHUNSUKE
MYONAKA SHINJI
ISHIHAMA YOSHIRO
KUSAKA HIROTAKA
TANAKA HIROMASA
MYONAKA SHINJI
ISHIHAMA YOSHIRO
KUSAKA HIROTAKA
TANAKA HIROMASA
Application Number:
JP2016044701A
Publication Date:
September 23, 2016
Filing Date:
March 08, 2016
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP
International Classes:
E02D7/20; E02D5/28; E02D13/00
Attorney, Agent or Firm:
Masatake Shiga
Mitsuo Teramoto
Sumio Tanai
Tomoo Katsumata
Hiroshi Yamaguchi
Mitsuo Teramoto
Sumio Tanai
Tomoo Katsumata
Hiroshi Yamaguchi