DESIGN AND ANALYSIS OF DEEP FOUNDATION

1 / 31

# DESIGN AND ANALYSIS OF DEEP FOUNDATION - PowerPoint PPT Presentation

DESIGN AND ANALYSIS OF DEEP FOUNDATION. WEEK 10 DESIGN OF BORED PILE DESIGN OF GROUP AND RAKE PILE PILE SETTLEMENT. Learning Outcomes. Student should be able to: Design bored pile. (CO3-PO10) Design pile group. (CO3-PO10) Design rake pile.(CO3-PO10) Estimate pile settlement (CO3-PO10).

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

## PowerPoint Slideshow about 'DESIGN AND ANALYSIS OF DEEP FOUNDATION' - ferris-ross

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
DESIGN ANDANALYSIS OF DEEP FOUNDATION

WEEK 10

• DESIGN OF BORED PILE
• DESIGN OF GROUP AND RAKE PILE
• PILE SETTLEMENT
Learning Outcomes

Student should be able to:

• Design bored pile. (CO3-PO10)
• Design pile group. (CO3-PO10)
• Design rake pile.(CO3-PO10)
• Estimate pile settlement (CO3-PO10)

Bored Pile Design

In Kenny Hill residual soil ie sedimentary soil

Fsu = KsNs

Fbu = KbNb

Chiu and Perumalawamy (1987) used Ks = 2.5 Kb = 50

When socketed into rock, the skin and end bearing shall be based

On the allowable friction and end bearing values

Structural Capacity is taken as F = 0.25fcuA

Where fcu = concrete strength at 28 days

A = cross sectional area of bored pile

Optimise by designing geotechnical capacity to equal structural

capacity

PILE SPACING

MINIMUN OF 3 DIAMETER CENTRE TO CENTRE OF PILE

FOR NON-CIRCULAR –CENTRE TO CENTRE SPACING

SHOULD BE AT LEAST BE SAME AS THE PERIMETER

A pile resists lateral load by mobilising passive pressure of

Surrounding soil.

• The soil reactions depends on
• Stiffness of the soil
• Stiffness of the pile
• Fixity of the ends of the pile
• Two categories:
• Short or rigid piles
• Long or elastic piles
Rake Pile