| 摘要 |
PROBLEM TO BE SOLVED: To provide a composite friction pile provided with projections formed on a surface of a core material of the composite friction pile, efficiently working against stratum. SOLUTION: The projections 1a-1c are attached to the surface of the core material P by changing at least either of mounting pitch and height in accordance with peripheral face friction performance between soil cement C and soil sections G<SB>1</SB>-G<SB>3</SB>. COPYRIGHT: (C)2009,JPO&INPIT
|
