Volume 4, Issue 3 September 2019

Serial Report

Terminologies in Press-in Engineering (Part 6)
IPA Editorial Committee
Following Terminologies Press-in Engineering (Part 5) in Volume 4, Issue 2, Part 6 is the last issue as follows:press-in parameters

operational parameters, such as maximum press-in force, press-in speed andthe penetration and extraction lengths during repeated and extraction
operation, determined as target values for the control of Silent Piler duringpile installation. Those are the items affecting the piling efficiency of thepress-in operation and construction time control.

reaction pilepiles/sheet piles previously installed into the ground that are gripped by Silent
Piler to obtain reaction force for the next pile installation

reaction standa stand for mounting counter weights to obtain reaction force during theinstallation of initial few piles/sheet piles to commence press-in operation

initial press-in

driving attachment

embedded wall(s)/structure(s)cantilever type embedded
retaining structure(s) / wall(s)combined wall structure by
Combi-Gyro Method
plugginga piling process to install an initial few piles/sheet piles while reaction
pile/sheet piles are not available
an equipment used for avoiding the chuck frame of the Gyro Piler fromtouching the steel tubular piles previously installed. It is used not only for theinstallation of steel tubular pile to the design elevation, but for the selfwalking of the Gyro Piler. It is also used to install joint members such as equal
angle steel between steel tubular piles.
generic term for continuous body of embedded wall(s)/structure(s) withpiles/sheet piles and it is mainly utilized for earth retaining function
the structure(s)/wall(s) formed by simply embedding piles/sheet piles andsteel tubular piles, without tie rods, anchors or braces, usually used as earth
retaining structureswall constructed with a combination of hat-shaped steel sheet piles and steel
tubular piles by the Combi-Gyro Method
situation in which the inside of an open-ended pile is plugged with inner soil
during pile installation. It also occurs in a concaved portion of the steel sheet
pile. This causes an increase in penetration resistance to pile installation.

interlock/interlockinga joint adjacent sheet piles in the longitudinal direction to form a continuous
wall or structure

prefabricated pile(s)piles/sheet piles commercially fabricated in a factory as a ready-made use onsite

bored pile

pile formed with or without a pile casing by excavating or boring a hole in theground and filling with plain or reinforced concrete. (EN 1536:2010)

driven pile

pile which is forced into the ground by impact/vibratory hammeringpile toebottom edge of pile/sheet pile

pile toe ring bitsa steel ring with cutting bits attached to the toe of a steel tubular pile, used
for rotary Press-in with cutting bits

pile top

top edge of pressed-in pile/sheet pileplanned installation line
hollow bored piling method(pile installation method byinner excavation)planned line for pile/sheet pile installation specified in construction plan
pile formed with a pile casing and installed with simultaneous excavation or
displacement of soil inside the casing

25