1 / 21

Project 2

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.

anika-browning
Télécharger la présentation

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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Prepared by : En’am Sab’ Elaish NourKananh MajdolinYasen Submitted to: Sami Al-Hijawe Project 2

  2. Support excavation systems

  3. Case study

  4. 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)

  5. 1- Big Boulder 2-Row of Pile 3- Retaining Wall The most commonly used methods in Palestine are:

  6. Row Pile Design

  7. 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

  8. Section parameter

  9. ɣ=19 ɣ'=9 ɸ=30 = ɸ =20 Ka=0.28 Kp=5.74 Soil properties

  10. Shape of pile Length=13 Penetration depth=5.5m Excavation = 7.5

  11. Deflection = 6 cm OK Deflection

  12. Moment Moment =751 KN/m2 Moment capacity =901.5/.8=1127 ok

  13. Shear =179.9 KN/m Shear capacity =305.6/0.8=382 KN/m ok shear

  14. Retaining Wall Design

  15. Retaining wall

  16. 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

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

  18. 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

  19. M = P*e=293.21kN.m Chick bearing pressure KN/m^2 q1 <qallok KN/m^2 q2 <qallok

  20. 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 :

  21. Thanks

More Related