how to do pile driving with percussion method

第 1 頁How To Do Pile Driving With Percussion Method | Piling | Pile Driving | Piling Construction

30/11/2010 15:48:47http://pile-driving.com/how-to-do-pile-driving-with-percussion-method/

Jetty & Seawater Intake

for chemicals, coal, power plants , marine

terminals in Indonesia

www.swijetty.com

Resonant Machines

High Tech Concrete Recycling Global

Leader-60% Less Job Costs

www.resonantmachines.com

Sheet pile design program

DeepXcav 2010 graphical & powerful with

structural design AISC, EC .

deepexcavation.com

Piling | Pile Driving | Piling Construction

Ads by

GooglePile Driving Sheet Piling Percussion Bored Pile

How To Do Pile Driving With Percussion Method

Posted by Harry Lee on April 15, 2009 at 8:26 pm · Under Pile Driving, Piling

There are several types of pile driving method in the piling construction, type of pile driving method used is

depending on the condition of soil and location of the site . However, different piling machine will be used with

different pile driving methods too. The specification for pile driving mentioned below is generally recommended

for pile driving of prestressed spun concrete piles by using percussion method . Engineers may be required to

modify some of the clauses to suit requirements of different site conditions.


1) Joints

The bending strength of a joint between two lengths of pile shall be equal or more than the bending strength of the

concrete shaft. When two lengths of pile are jointed, the end plates must bear over their complete areas. The two

end plates are then welded along their entire periphery with weld size as specified.

1.1 Welding of Joints

All welding shall be carried out in accordance with the requirements of B.S .5135:1974 - Metal-Arc Welding of carbon and carbon-manganese steel.

1.2 Tests for Approval of Welders

Welders shall be qualified in accordance with the requirementsof AWS Code D1.1. Only welders who pass the qualifying tests for the type of weld

specified shall be employed on the Works.

1.3 Examination of Welds

Butt welds between the end plates of the joints shall be tested using magnetic particle or dye penetrant test methods. Copies of these test records and reports

shall be furnished to the Engineer.

Where such examination reveals defects in the welds, the joints shall either be rejected or repaired. If repeat tests show the weld to be still defective, the

joint shall be rejected. The defective weld shall be removed, replaced with a fresh weld and re-examined.

For the purpose of this Clause, cracks, leaks, laminations, lack of complete fusion, undercutting or reduction in wall thickness adjacent to the weld shall

constitute a defect .

2) Pile Driving by Using Percussion Method

2.1 Pile Hammers

Shall be of size and type able to deliver consistently an effective dynamic energy suitable to the piles to be driven and the material into which they are to be

driven. Hammers shall be provided with proper driving helmets suited for the piles. Any indication of collapse of hoses, tripping of hose lining or any

erratic action of the hammer shall be cause for immediate shutdown until the problem has been corrected.

Pile hammers shall be operated at the full rated efficiency and capacity and in the manner specified by the manufacturer, except as directed otherwise by the

Engineer, or noted herein below under Reductiono of Hammer Energy.

When a steam or air hammer is used for driving any type of piles, both the volume and pressure of steam or air recommended by the manufacturer of the

hammer shall be maintained at all times to ensure full energy of the driving blows . Before pile driving is started, the Piling Contractors shall provide written

certification to the Engineer that the pile hammer, compressors and valves have been inspected and found to be in good working condition .

2.2 Reductiono of Hammer Energy

When the pile is set in a pre-jetted or pre-drilled hole or when the point of a prestressed concrete pile is passing through soft soil so that there is little or no

resistance to penetration of the pile, there is a possibility that longitudinal tensile stresses may be set up in the pile shaft by the elastic shock waves travelling

up and down the pile. For such driving conditions, the length of stroke of the hammer shall be reduced. Failure of the piles due to longitudinal tensile

stresses caused by excessive driving shall be the Contractor’s responsibility.

2.3 Pile Cushion Block

The heads of all prestressed concrete cylinder piles shall be protected with a soft wood cushion block at least 15 cm thick to effectively and uniformly



distribute hammer blog energy. The block shall be composed of layers of 20mm hi-grade marine plywood or approved equal, and of such dimensions as to

completely cover the concrete cross -section of the pile. The cushion block shall be inspected periodically during driving and no driving shall be done with a

block that has been unduly worn and compressed with use. Cushion blocks must be replaced when compressed to 1/2 their original thickness, when badly

worn or when burning.

2.4 Driving

The piles shall be driven to the driving resistance or tip elevation as determined by the Engineer from pile load tests. The maximum allowable variation at

the butt end of the pile shall be 150mm in any direction from the location shown on the Drawings or as directed by the Engineer. Any variation beyond

these limits shall be allowed or rejected at the sole discretion of the Engineer.

3) Cutting Off and Capping Piles

Tops of foundation piles shall be embedded in the concrete footing or pile cap for a minimum depth of 75mm (measured at center line of pile). When the

top elevation of a pile is below the elevation of the bottom of the cap, the pile shall, if approved by the Engineer be built up from the butt of the pile to the

elevatioon of the bottom of the cap by an approved method. The cuts shall be made accurately in clean, straight lines; care shall be exercised to avoid

damaging the remaining pile and to ensure full bearing between the footings (or pilecaps) and piles.

Bookmark

Related Articles

What Is ICP Piles

How To Produce Super Strength Pile (SS Pile)

Procedure Of How To Drive A Pile

AuGeo Piling System

What Is Bored Piles

Permalink for How To Do Pile Driving With Percussion Method

Pile Driver www.dd-eng.com

Sheet Pile Driver, Auger Vibro Hammer, Vibro

Ripper

Icanda Corporation www.icanda.com

Slurry Walls / Cutoff Walls Deep Foundation

Specialist

Leave a Comment for How To Do Pile Driving With Percussion Method

Name (required)

E-mail required)

URI

Submit Blog Comment



Ads by Google

Steel Sheet Pile

CFA Piles

Piles 13

Types of Piling

K-E Persson ABSeamless steelpipes,

Sheet Piles, Piling

equipment, and much

more!www.kepab.com

Detailing Software

Antiseismic

Technologies Static

Dynamic Analysis

Softwarewww.pi.gr

Rock Drills

Get Free ImportQuotes Export Ready

Suppliers From IndiaIndiaMART.com/Industrial_

Plants香香香香港港港港敲敲敲敲擊擊擊擊樂樂樂樂中中中中心心心心 HKPC

Rockin' regular

percussion courses!ABRSM, Drum set,

Parent & Childwww.hkpercussion .com

Zueblin Cage

MachinesAuto-Reinforce Precast

Products Concrete

Pipes Piles Poleswww.cagemachine .com

Categories

AuGeo Piling System

Bored Pile

Deep Foundation

ICP Pile

Micropile

Pile Driving

Piling

Piling Machine

Retaining Wall

Sheet Piling

Super Strength Pile

Recent Piling Articles

Structural Foundation - Retaining Wall and Bored Piles

What Is ICP Piles

AuGeo Piling System

What Is Micropile

Cold Formed Steel Sheet Piling


How To Drill Bored Pile

What Is Bored Piles

How To Produce Super Strength Pile (SS Pile)



How To Handle And Store Pile

Archives

June 2009

May 2009

April 2009

March 2009

Popular Tag

AuGeo Piling System Bored Pile Bored Piles Bored Piling Bored Piling Machine Cast-In-Situ Concrete Cold Formed Steel Concrete Pile Construction Deep Foundation

Extension Pile Ground Treatment ICP Piles Initial Pile Load Test Micropile Micro Pile Micro Piles Percussion Method Pile Pilecap Pile Driving Pile Head Piles Piling PilingConstruction Piling Contractor Piling Machine Precast Concrete Precast Concrete Pile Prestress Pile RC Square Pile Reinfored Concrete Retaining Wall Sheet Pile Sheet

Piling Spun Pile SS Pile Steel Pile Structural Foundation Super Strength Pile Timber Pile

Blogroll

Corrugated Drain Pipe

Dock Pilings

Vinyl Sheet Piling

Google AdSense Almost Spring Theme with SEO by David Law, based on Almost Spring theme

Piping Work | Concrete Curb | Piling | Pile Driving | Piling Construction

how to do pile driving with percussion method

Documents