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TOPIC 7 SLOPE STABILITY Course: S0705 – Soil Mechanic Year: 2008.

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Presentation on theme: "TOPIC 7 SLOPE STABILITY Course: S0705 – Soil Mechanic Year: 2008."— Presentation transcript:

1 TOPIC 7 SLOPE STABILITY Course: S0705 – Soil Mechanic Year: 2008

2 Bina Nusantara CONTENT SLOPE FAILURE AND SLOPE STABILITY (SESSION : F2F) BISHOP METHOD (SESSION : F2F)

3 Bina Nusantara SLOPE FAILURE CAUSAL FACTOR OF FAILURE –THE SLOPE IS TOO STEEP –UNSUITABLE OF SOIL PROPERTIES –LESS COMPACTION –INFLUENCE OF PORE WATER AND OR RAIN –EARTHQUAKE –LIQUIFACTION –HUMAN MANNER

4 Bina Nusantara SLOPE FAILURE

5 Bina Nusantara FAILURE TYPE ROTATIONAL

6 Bina Nusantara FAILURE TYPE TRANSLATIONAL

7 Bina Nusantara FAILURE TYPE FALLING

8 Bina Nusantara FAILURE TYPE BLOCK SLIDE

9 Bina Nusantara FAILURE TYPE TOPPLE

10 Bina Nusantara FAILURE TYPE FLOW

11 Bina Nusantara SLOPE FAILURE

12 Bina Nusantara SLOPE FAILURE

13 Bina Nusantara SLOPE FAILURE

14 Bina Nusantara SLOPE FAILURE

15 Bina Nusantara SLOPE FAILURE

16 Bina Nusantara SLOPE STABILITY PURPOSE –SLOPE STABILITY ANALYSIS AGAINST LANDSLIDE –SELECTION OF THE SUITABLE SOIL PARAMETER –THE USE OF APPROPRIATE CALCULATION METHOD INCLUDE USING COMPUTER SOFTWARE –EFFICIENCY AND EFFECTIVENESS SOLUTION METHODS

17 Bina Nusantara PARAMETER AND ANALYSIS PARAMETER –TOTAL ( , c,  ) –EFFECTIVE (  ’, c’,  ’) ANALISIS –LIMIT EQUILIBRIUM THEORY (MOHR COULOMB FAILURE CRITERIA) FORCE EQUILIBRIUM FORCE AND MOMENT EQUILIBRIUM

18 Bina Nusantara CALCULATION METHOD FORCE EQUILIBRIUM –ORDINARY METHOD OF SLICES (OMS) –SIMPLIFIED BISHOP –SIMPLIFIED JANBU –CORPS OF ENGINEER –LOWE AND KARAFIATH –GENERALIZED JANBU FORCE AND MOMENT EQUILIBRIUM –BISHOP’S RIGOROUS –SPENCER –SARMA –MORGENSTERN-PRICE

19 Bina Nusantara TRANSLATIONAL LANDSLIDE INFINITE SLOPE –COHESIVE SOIL –COHESIONLESS SOIL FINITE SLOPE –PLANE FAILURE SURFACE –BLOCK SLIDE ANALYSIS

20 Bina Nusantara ROTATIONAL LANDSLIDE CIRCULAR SURFACE ANALYSIS –CIRCULAR ARC (  U = 0) METHOD –FRICTION CIRCLE METHOD METHOD OF SLICE –ORDINARY METHOD OF SLICES (OMS) –JANBU’S SIMPLIFIED METHOD –BISHOP’S SIMPLIFIED METHOD –MORGENSTERN – PRICE METHOD –ETC

21 Bina Nusantara ROTATIONAL LANDSLIDE METHOD OF SLICES

22 Bina Nusantara ROTATIONAL LANDSLIDE ORDINARY METHOD OF SLICES (OMS)

23 Bina Nusantara ROTATIONAL LANDSLIDE SIMPLIFIED BISHOP METHOD

24 Bina Nusantara ROTATIONAL LANDSLIDE A Slope of 20 m height and angle 2H:1V had been landslide as shown in following figure. The center of failure circle is at (35.1;55) and the failure circle radius is 38.1 m (35,1;55) (20;20) 38,1 m  = 16 kN/m 3  = 20 o c = 20 kN/m 2 Determine the safety factor of slope base on : -Ordinary Method of Slices -Bishop’s Method

25 Bina Nusantara ROTATIONAL LANDSLIDE

26 Bina Nusantara ROTATIONAL LANDSLIDE

27 Bina Nusantara ROTATIONAL LANDSLIDE

28 Bina Nusantara SOLUTION GRAVITY WALL

29 Bina Nusantara SOLUTION SOIL NAILING (TIE BACK)

30 Bina Nusantara SOLUTION SHEET PILE, PILE

31 Bina Nusantara SOLUTION REINFORCEMENT (STEEL, GEOSYNTHETIC)


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