SAMIL C&S

Product with Increased allowable axial load: Ultra High Strength Piles is a product evolved from high strength Piles with increased Pile allowable axial load. Economical product that improve Pile’s allowable axial load by 145%~147%(A type) through increasing compressive strength from conventional 78.5MPa to 110MPa.

Improvement of allowable axial load of 145%~147% compare to conventional Pile
- Increased skin friction force as a result of a measure to increase side bearing capacity, extended bearing capacity(Ext Pile, S-phc Pile, etc.) Pile construction technology improvement.
Reduction of number of Piles due to increase of bearing capacity
- Development of construction method that increase bearing capacity by connection Pile to soft rock (N-value over 60) → Occurs when bearing capacity increase caused by extended head and depth of penetration surpasses Pile strength.
Contribution to reduction of construction cost by performance improvement
- The increase requirement for Pile axial load must have the increase in concrete Concrete compressive strength or the increase in sectional area. If concrete compressive strength increase from 80Mpa to 130Mpa, allowable axial load increase by 62%.
Applicable Field
- No early appearance of rock mass or no weathered rock
  In case of the depth to weathered rock is deep
  In case of large thickness of weathered rock

초고강도 파일의 제원
Diameter D (㎜)	Thickness T (㎜)	Classification	Concrete Cross sectional area Ac (㎠)	Valid Prestress σce (N/㎟)	Allowable axis force(Pa) (kN)		Allowable axis force rate of increase
Diameter D (㎜)	Thickness T (㎜)	Classification	Concrete Cross sectional area Ac (㎠)	Valid Prestress σce (N/㎟)	Conventional Pile	Ultra High Strength	Allowable axis force rate of increase
500	80	A	1,056	3.92	1,731	2,539	147%
600	90	A	1,442	3.92	2,365	3,463	146%
700	100	A	1,885	3.92	3,091	4,530	147%
800	110	A	2,384	3.92	3,911	5,726	146%

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