general sheet piling construction practice
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GENERAL SHEET PILING CONSTRUCTION PRACTICE(Based on Marina Barrage Project experience)
1) Usually from 2 ends moving towards the middle to avoid pile tilting (creeping)2) !et a stretch of pile panel" say 1#m long or within natural 2 corner piles
$%1) &n land' within the woring stretch" lay guide eam (*+, eam)$%2) &n sea' install ing post" ,+, cross eam and guide eams (,+, eam)- .lso install access using ,+,eam y the side of guide eam/) 0rive the 1st layer of sheet piles to the ground level (welding seams shall e staggered duringfarication)) .lternate pitching the 2nd tier sheet piles and join them to the 1st tier y welding) .lternate drive the 2nd tier sheet piles3) 4epeat the procedure /%-
5&67'1) Purpose of alternate driving'% !taggering welding point of neighouring piles% .void pile tilting (creeping)-
2) 8orner piles are special made for turning and joint-$) 12 ton for a pair" 9 ton for single sheet piles-/) 6here is relationship among sheet pile depth" soil condition" type of sheet pile used (+++" +:" or :+)and type of hammer to e used (hydraulic or viro" and the weight)- ;enerally" the harder of the soil"the deeper of the penetration" the igger and thicer si
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8lose view of the sheet pile spicing
>elding of splicing
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MP+ test (Magnetic Particle +nspection) for the welding joint
DRIVING-IN METHOD
(Based on Marina Barrage Project experience)
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+mpact @ammer 0riving' . 3%ton hydraulic hammer
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:iro%driving' . 12%ton viro hammer
:iro%driving' Power pac for viro hammer
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PRESS-IN METHOD (SILENT PILER)(7xtracted from the &riental%.rcelor and ;ien catalogues (2##))
Press%in principle
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Machine layout plan for typical silent piling
Machine layout elevation for typical silent piling
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!ilent piler for sheet piles
Driving Aids in Hard Si!"
% Pre%augering
% >ater jet
% Pre%drilling
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Pre%augering
Aeft' >ater jet 4ight' Pre%drilling
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DRIVING GUIDE AND CORNER PILES(Based on Marina Barrage Project experience)
Aay guide eams efore installation of sheet piles
8orner pile
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NORMAL DRIVING METHODS
% Pitch and drive
% Panel driving
% !taggered driving
% 8omination
Pan#! Driving M#$%d - A R#&''#nd#d Driving M#$%d(7xtracted from the &riental%.rcelor (2##))
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DRIVABILIT(7xtracted from the &riental%.rcelor (2##))
CROSS REFERENCEAand sheet piling production rateMarine sheet piling production rate
http://www.p3planningengineer.com/productivity/land%20sheet%20piling/land%20sheet%20piling.htmhttp://www.p3planningengineer.com/productivity/marine%20sheet%20piling/marine%20sheet%20piling.htmhttp://www.p3planningengineer.com/productivity/marine%20sheet%20piling/marine%20sheet%20piling.htmhttp://www.p3planningengineer.com/productivity/land%20sheet%20piling/land%20sheet%20piling.htm