PR Pile Construction Method

Product category

Construction & Civil engineering

Industrial field

Semiconductor & LCD, Construction & Civil engineering

Usage environment


The connection(pile head) of pile supporting the building has conventionally been coupled(rigid coupling) by fixing method. Since the pile head was damaged in the earthquake occurred offshore Miyagi Pref. and the earthquake occurred in southern area of Hyogo Pref., the P/R pile research council was established, to develop the coupling method in which the pile head was not rigidly coupled. The P/R pile research council conducted each experiment, to acquire general assessment (BCJ assessment - FD0013) from the Foundation, Building Center of Japan ahead of industry in Mar.2001, and further tried to improve the performance and cost repeatedly, to acquire the additional assessment(BCJ assessment - D0013-02).

  • Product Description


◆Clarification of pile head coupling status

It is possible to clarify the status of coupling between pile head and footing.

◆Reduced damage in pile head due to earthquake

The centralized stress is reduced at head of pile.

◆Reduced sectional area of upper structure

The bending moment to be transmitted from pile to upper structure is reduced radically.

◆Rationalized pile foundation design

Since the pile is not rigidly coupled to the upper structure, it is possible to examine the upper structure and lower structure separately.

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