Project 2
This presentation is the property of its rightful owner.
Sponsored Links
1 / 21

Project 2 PowerPoint PPT Presentation


  • 55 Views
  • Uploaded on
  • Presentation posted in: General

Prepared by : En’am Sab’ Elaish Nour Kananh Majdolin Yasen Submitted to: Sami Al- Hijawe. Project 2. Support excavation systems. Case study. 1- Retaining walls : 2- Big Boulder Foundations 3- Soil Nailing 4- Solider Pile 5- Sheet piles 6- Freezing.

Download Presentation

Project 2

An Image/Link below is provided (as is) to download presentation

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


Project 2

Prepared by :

En’am Sab’ Elaish

NourKananh

MajdolinYasen

Submitted to:

Sami Al-Hijawe

Project 2


Support excavation systems

Support excavation systems


Case study

Case study


Type of excavation support system in general

1- Retaining walls:

2- Big Boulder Foundations

3- Soil Nailing

4- Solider Pile

5- Sheet piles

6- Freezing

Type of excavation support system ( In general)


The most commonly used methods in palestine are

1- Big Boulder

2-Row of Pile

3- Retaining Wall

The most commonly used methods in Palestine are:


Project 2

Row Pile Design


Excavation parameter

Excavation Parameter

Depth=7.5 m

Assumed :

Surcharge load= 10 KN/m2

Water depth =20m

Water density=9.81 KN/m2

Min. fluid density=5 KN/m2


Section parameter

Section parameter


Soil properties

ɣ=19 ɣ'=9

ɸ=30 = ɸ =20

Ka=0.28 Kp=5.74

Soil properties


Shape of pile

Shape of pile

Length=13

Penetration depth=5.5m

Excavation = 7.5


Deflection

Deflection = 6 cm OK

Deflection


Moment

Moment

Moment =751 KN/m2

Moment capacity =901.5/.8=1127 ok


Shear

Shear =179.9 KN/m

Shear capacity =305.6/0.8=382 KN/m ok

shear


Project 2

Retaining Wall Design


Retaining wall

Retaining wall


Check overturning

qall=400kN/m^2 Ka=0.2 Kp=5 ф=40° C=0

ɣ=19 KN/m3 =(2/3)*ɸ=26.7

q1=ɣ*h*k=21*7.51*0.2=31.542KN/m2

q2=kw=0.2*10=2 KN/m2

p1=0.5*q1*h=0.5*31.542*7.51=118.44KN

p2=q2*w=2*7.51=15.02KN

p1+p2=133.46KN

Moverturning=p1(h/3)+p2(h/2)=296.5+7.51=304.01KN

Check overturning


Project 2

W=∑Wn=493KNMn=1665KN.M∑=mresistingF.S=mresisting/moverturning1665/304.01=5.5>2….


Check sliding

Presisting/Psliding>or=1.5

psliding=133.46 kN

Presisting=(∑w*friction factor)+(ɣ*h*kp )

=(493*0.5)+(21*1.8*5)=602.5KN

Check sliding

  • = 4.5>1.5 Ok


Chick bearing pressure

M = P*e=293.21kN.m

Chick bearing pressure

KN/m^2

q1

<qallok

KN/m^2

q2

<qallok


The following conclusions can be made

1- The two alternatives of protection are goal for the required purpose .

2- The using of piles requires less time Of the excavation

3- The distance between the adjacent piles in the row is recommended to be less than 3*D

4- Piles are recommended to connect on the top y means of a reinforced concrete beam.

the following conclusions can be made :


Project 2

Thanks


  • Login