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Analysis of Slope Stability & Design of Retaining Structure & Foundation for Multi-story Building 2011-2012 Graduation Project Seminar

# Analysis of Slope Stability & Design of Retaining Structure & Foundation for Multi-story Building

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Analysis of Slope Stability & Design of Retaining Structure & Foundation for Multi-story Building. Graduation Project Seminar. 2011-2012. Analysis of Slope Stability Design of Retaining Structure Design of Foundation for Multi-Story Building. Overview. AL-Iskan road at AL-Junaid district. - PowerPoint PPT Presentation

### Text of Analysis of Slope Stability & Design of Retaining Structure & Foundation for Multi-story Building

• Analysis of Slope Stability & Design of Retaining Structure & Foundation for Multi-story Building2011-2012Graduation Project Seminar

• Analysis of Slope StabilityDesign of Retaining StructureDesign of Foundation for Multi-Story Building

• AL-Iskan road at AL-Junaid district.

• Surveying Plan

• Longitudinal Cross Section for the site

• Slope stability is the slope of the soil that make it stable.

• There are several method to analysis slope stability:Infinite Slope.Logarithmic Spiral.Spencer.Morgenstern & Price.

• The project is dealing with slope of the soil by using GeoStudio software.This software is based on Morgenstern & Price method.It gives you a simple analysis for slope stability and critical slip for the soil.

• Model: Mohr-CoulombUnit Weight: 20 kN/mCohesion: zero kPaPhi: 20 Bedrock

• Critical slip at radius = .782

• Grouting and Injection.Injection of pile.Cement grout.Vegetation.Retaining Structure.

These methods increase the resistance and shear strength of the soil.

• Retaining Wall.Boulders Wall.

Retaining structure are designed using prokon and Geo5 software.

• Soil propertiesBearing capacity = 250 KN/m=20, fc=28 MPa, Fy=420 MPa, gsoil =20 KN/m2Surcharge = 15 KN/m2

• Safety factor against overall sliding = Fr/Fh = 1.519 Safety factor against overturning = Mr /Mo = 5.072Over turning(manually)= 3

Safety factor against sliding = 1.5Safety factor against overturning = 2.5

(Seismic Design )

• Properties of bouldersUnit weight=25KN/mAngle of internal friction=30Cohesion=0

• Using AllPile software to design pile foundation.design for two diameter (60, 80) cm and 3lengths (10, 12, 15) m.Soil properties:C=40KN/m , Phi=15 , Unit weight=18KN/m

D(cm)L(m)# of PilesAllowable Capacity(KN)601062530.63601263117.01601542623.56801042400.4801232204.76801532861.91

• Columns (185*20)Service Load = 655 KN

D(cm)L(m)# of PilesAllowable Capacity(KN)60102843.5460122103960151655.89

801021200.280121734.9280151953.97

• Design pile footing for column (20*80 cm).Diameter= 80 cm fc=400 kg/cm =32 MPa L=12 m #of piles = 4 pilesAllowable capacity=2940 KN pult. =2836 KN pserv. =2157 KN

Fu=2836/4=709 KN

• H=600mm

• THANK YOU

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