dinding penahan tanah

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Sertifikasi HATTI: Tegangan Lateral dan Dinding Penahan Tanah Ir. Masyhur Irsyam, MSE., Ph.D. Teknik Sipil, Institut Teknologi Bandung

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Page 1: Dinding Penahan Tanah

Sertifikasi HATTI:Tegangan Lateral

danDinding Penahan Tanah

Ir. Masyhur Irsyam, MSE., Ph.D.Teknik Sipil, Institut Teknologi Bandung

Page 2: Dinding Penahan Tanah
Page 3: Dinding Penahan Tanah
Page 4: Dinding Penahan Tanah

(Retaining wall Gabion)

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(Retaining wall after construction)

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Sheet Pile

Page 7: Dinding Penahan Tanah

Braced Cut Excavation

Page 8: Dinding Penahan Tanah
Page 9: Dinding Penahan Tanah

CONTOH STRUKTUR SHEET PILE

Page 10: Dinding Penahan Tanah

Rekomendasi Buku Untuk Sheet Pile

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33

1

1

33

1

1

=45+/2

=45-/2

Test Triaxial:Arah Bidang Runtuh Terhadap 1

Page 12: Dinding Penahan Tanah

Mekanisme Aktif dan Passif

Page 13: Dinding Penahan Tanah

Mekanisme Aktif dan Passif

v=1

h=3

v=3

h=1

Page 14: Dinding Penahan Tanah

Mekanisme Aktif dan Passif

v=1

h=3

v=3

h=1

33

1

1

3 3

1 1

Page 15: Dinding Penahan Tanah

Hubungan Koefisien Lateral dan Regangan

Kp

Ka

Ko

Expansion CompressionLateral Strain

1=v3=h

13

Page 16: Dinding Penahan Tanah

1=v3=h

3

Besarnya Tegangan Aktif

33

1

1

a3=h=Ka. v

1

3

2 2/45tan

a

a

K

K

Pasir

Page 17: Dinding Penahan Tanah

Tekanan Aktif: Pasir

h=3 =1 x Ka

Lebih dari satu lapis :

h=3 =1 x Ka

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13

1

Besarnya Tegangan Pasif

3

1

3

1

Ka

1=

p1=h=Kp. v

3

1

pK

Page 19: Dinding Penahan Tanah

Tekanan Aktif dan Pasif: Pasir

Depth

hh Ka

Depth

h Kp

h

Page 20: Dinding Penahan Tanah

Tekanan Aktif dan Pasif: PasirAda Beban Merata

Depth

hh Ka

Depth

h Kp

qh

pp

p

q

pKaqKp

h = h +p) Kah = h +q) Kp

Page 21: Dinding Penahan Tanah

Tegangan Effektif

h

= .h

h1

h2

= h1 + ’h2 = (h1+ h2) - w.h2

‘= tegangan efektif = tegangan total = tegangan air pori

= -

’ = - w

Page 22: Dinding Penahan Tanah

Pengaruh Beban dan Air Tanah

a

a

a

Page 23: Dinding Penahan Tanah

Pengaruh kemiringan tanah diatas:

Page 24: Dinding Penahan Tanah

Cantilever & Gravity Wall

Cantilever Gravity Wall

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C

Pasir

Lempung

Page 26: Dinding Penahan Tanah

Penaruh C-Kohesi TanahTekanan Aktif Rankine

aava KcKK 2.3 Shear stress

Normal stress

(b)

Page 27: Dinding Penahan Tanah

Tekanan Pasif Rankine

ppvp KcKK 2.1 v

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Tekanan Aktif Rankine untuk Perencanaan

(c)

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Beban pada dinding

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Beban pada dinding

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Disain Dinding Penahan Tanah:Stabilitas

1. Overtuning2. Sliding3. Excentricity4. Bearing Capacity

Page 32: Dinding Penahan Tanah

Stabilitas Retaining Wall1. Overtuning2. Sliding3. Excentricity4. Bearing Capacity5. Over All Stability

1. Overturning

MR

MR

SF = 1.5 – 2.0

Page 33: Dinding Penahan Tanah

• 2. Sliding

• 3. Excentricity

Page 34: Dinding Penahan Tanah

• Overtuning

Pa

PhPv

Page 35: Dinding Penahan Tanah

• Overtuning

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Where ’ = effective normal stress on plane of shearing c = cohesion, or apparent cohesion = angle of friction

c

s = c + ’ tan

x

xx

x

x

Page 37: Dinding Penahan Tanah

• Sliding

Page 38: Dinding Penahan Tanah

• Sliding

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1. Contoh SoalBerikut ini gambar cross section dari cantilever retaining wall. Hitung angka keamanan (factor of safety) yang menyangkut overtuning dan sliding!!!

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1. Solusi :

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Page 43: Dinding Penahan Tanah

1. Contoh SoalBerikut ini gambar cross section dari cantilever retaining wall. Hitung angka keamanan (factor of safety) yang menyangkut overtuning dan sliding!!!

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Sheet Pile

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KLASIFIKASI STRUKTUR SHEET PILE

Steel Pipe Pile - Japan

Page 46: Dinding Penahan Tanah

Cantilever Pile/ Sheet Pile

Page 47: Dinding Penahan Tanah

Anchored Type

Page 48: Dinding Penahan Tanah

Anchored Type

Deadman Type Structure

Tie Rod Type Structure

Double Tie Rod Type Structure

Steel Pipe Pile - Japan

Page 49: Dinding Penahan Tanah

Tie Rod Type-I

Steel Pipe Pile - Japan

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Tie Rod Type-II

Steel Pipe Pile - Japan

Page 51: Dinding Penahan Tanah

Tie Rod Type-III

Steel Pipe Pile - Japan

Page 52: Dinding Penahan Tanah

Anchored Sheet Pile

Piling Handbook - Arcelor

Page 53: Dinding Penahan Tanah

Ground anchor

Sheet pile

Page 54: Dinding Penahan Tanah

Batter-Pile Anchor Type

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C 1.0 24o 16.5Sand

C

Very Soft Clay

Very Soft Clay

Very Soft Clay

Soft Clay

Soft Clay

65.0 4o 17.0Stiff Clay

80.0 4o 17.5Stiff Clay

0.00 mLWS

Existing Sea Bed

Eu = 250 Cu

-10.0 mLWS

+3.60 mLWS

25.4 1o 15.5

31.9 1o 16.0

41.9 1o 16.0

43.4 2o 16.5

29.4 1o 16.0

Dermaga Tanjung Emas

Page 56: Dinding Penahan Tanah
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Relieving Platform Type Structure

Steel Pipe Pile - Japan

Page 58: Dinding Penahan Tanah

Relieving Platforms Retaining Wall

Piling Handbook - British

Page 59: Dinding Penahan Tanah

Double Sheet Pile Wall Type

Page 60: Dinding Penahan Tanah

Double Sheet Pile Wall Type Structure

Steel Pipe Pile - Japan

Page 61: Dinding Penahan Tanah

Cellular Type Structure

Piling Handbook - Arcelor

Page 62: Dinding Penahan Tanah

Cofferdams

Piling Handbook - Arcelor

Page 63: Dinding Penahan Tanah

Piling Handbook - Arcelor

Page 64: Dinding Penahan Tanah
Page 65: Dinding Penahan Tanah

Cofferdams

Piling Handbook - Arcelor

Page 66: Dinding Penahan Tanah

Metoda Perhitungan Sheet Pile

1. Metoda Elemen Hingga

Anchor: Pegas

Sheet Pile: Beam Element

Parameter Tanah:C (kohesi)(Sudut geser dalam)E (Young’s modulus)(Poisson’s ratio)

M < M konvensional

Page 67: Dinding Penahan Tanah

2. Beam on Elastic Foundation

Tekanan aktif

Anchor: Pegas

Tahanan pasif tanah: Pegas

Page 68: Dinding Penahan Tanah

3. Metoda Konvensional

Tekanan Tanah Aktif dan Pasif

AnchorO

Keseimbangan Gaya Horizontal dan Momen di Titik O

Page 69: Dinding Penahan Tanah

Cantilever Pile/ Sheet Pile

Page 70: Dinding Penahan Tanah

Cantilever Pile/ Sheet Pile

Page 71: Dinding Penahan Tanah

Cantilever Pile/ Sheet Pile

33

1

1

3 3

1 1

Page 72: Dinding Penahan Tanah

Aktif Pasif

Tegangan Lateral Pada Cantilever Pile/ Sheet Pile

Page 73: Dinding Penahan Tanah

Cantilever Sheet Pile

C

O

D

Mc = 0OD = 1.20 OC

aktif pasif

Mmax pada zero shear

Page 74: Dinding Penahan Tanah

Cantilever Sheet Pile

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Metoda Konvensional: 1. Free Earth Support

o

Page 77: Dinding Penahan Tanah

33

1

1

3 3

1 1

Metoda Konvensional: 1. Free Earth Support

o

Page 78: Dinding Penahan Tanah

Tegangan Lateral Anchored Sheet Pile

Aktif Pasif

Page 79: Dinding Penahan Tanah

Metoda Konvensional: 1. Free Earth Support

Panjang teoritis d: Keseimbangan momen di titik O Gaya angkur : Keseimbangan gaya horizontal

O

aktif pasif

Page 80: Dinding Penahan Tanah

Metoda Konvensional: 1. Free Earth Support

Untuk Disain Panjang d : SF momen di titik O = 2.0

O

aktif pasif

Page 81: Dinding Penahan Tanah

Piling Handbook -British

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Page 83: Dinding Penahan Tanah
Page 84: Dinding Penahan Tanah

Metoda Konvensional: 2. Fixed Earth Support

o

Page 85: Dinding Penahan Tanah

Metoda Konvensional: 2. Fixed Earth Support

Aktif Pasif

Pasif Aktif

Page 86: Dinding Penahan Tanah

33

1

1

3 3

1 1

Metoda Konvensional: 2. Fixed Earth Support

3 3

1 1

Page 87: Dinding Penahan Tanah

Metoda Konvensional: 2. Fixed Earth Support

Aktif Pasif

Pasif Aktif

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Metoda Konvensional: 2. Fixed Earth Support

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Retaining Walls

Page 91: Dinding Penahan Tanah

Retaining Walls

Page 92: Dinding Penahan Tanah

CONTOH STRUKTUR SHEET PILE

Page 93: Dinding Penahan Tanah

Braced Cut Excavation

Page 94: Dinding Penahan Tanah
Page 95: Dinding Penahan Tanah
Page 96: Dinding Penahan Tanah
Page 97: Dinding Penahan Tanah

Multi-Strut Type

Page 98: Dinding Penahan Tanah
Page 99: Dinding Penahan Tanah

BORED PILE DENGAN DISKONTINUITAS DARI HASIL PENGUJIAN

TT

TL

TL

TL

TL

PIN

TU G

ESER

2

BM.1TL

TL

TTPINTU GESER 1

Page 100: Dinding Penahan Tanah
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ClaySand

Soft to Medium

Pa = H (1 –( ))4CH

HC > 4

Stiff

HC < 4

Page 108: Dinding Penahan Tanah

Thank You!

Page 109: Dinding Penahan Tanah

33

1

1

33

1

1

=45+/2

=45-/2

Test Triaxial:Arah Bidang Runtuh Terhadap 1

Page 110: Dinding Penahan Tanah

ClaySand

Soft to Medium

Pa = H (1 –( ))4CH

HC > 4

Stiff

HC < 4

Page 111: Dinding Penahan Tanah

Mekanisme Aktif dan Passif

v=1

h=3

v=3

h=1

33

1

1

3 3

1 1

Page 112: Dinding Penahan Tanah

Cantilever Pile/ Sheet Pile

33

1

1

3 3

1 1

Page 113: Dinding Penahan Tanah

33

1

1

3 3

1 1

Metoda Konvensional: 1. Free Earth Support

o

Page 114: Dinding Penahan Tanah

33

1

1

3 3

1 1

Metoda Konvensional: 2. Fixed Earth Support

o

3 3

1 1

Page 115: Dinding Penahan Tanah

Pengaruh Beban dan Air Tanah

a

a

a

Page 116: Dinding Penahan Tanah

Tekanan Aktif Rankine untuk Perencanaan

(c)

Page 117: Dinding Penahan Tanah

1. Contoh Soal1. Berikut ini gambar cross section dari cantilever retaining

wall. Hitung angka keamanan (factor of safety) yang menyangkut overtuning dan sliding!!!

Page 118: Dinding Penahan Tanah

Metoda Konvensional: 1. Free Earth Support

Panjang teoritis d: Keseimbangan momen di titik O Gaya angkur : Keseimbangan gaya horizontal

O

aktif pasif

Page 119: Dinding Penahan Tanah

Metoda Konvensional: 1. Free Earth Support

Untuk Disain Panjang d : SF momen di titik O = 2.0

O

aktif pasif

Page 120: Dinding Penahan Tanah