DINDING PENAHAN TANAH

JENIS JENIS DINDING PENAHAN TANAH 2

DESAIN OF GRAVITY AND SEMIGRAVITY WALLS Sumber : Bowles, Joseph E, Foundation analysis and design 3

DESIGN OF CANTILEVER RETAINING WALL Sumber : Bowles, Joseph E, Foundation analysis and design 7

DRAINAGE WALL 12

Sertifikasi HATTI: Tegangan Lateral dan Dinding Penahan Tanah Prof. Ir. Masyhur Irsyam, MSE., Ph.D. Teknik Sipil, Institut Teknologi Bandung Sheet Pile (Retaining wall Gabion) 1

Braced Cut Excavation CONTOH STRUKTUR SHEET PILE Contoh PelaksanaanDiapraghmWall Pembuatan Guide Wall 2

Clamshell Grabber Clamshell Grabber CWS (Cofrage Avec Waterstopper) Stopper baja untuk mencetak bentuk ujung kiri-kanan panel Rebar cage + anchor sleeve 3

Rebar cage + anchor sleeve Rebar Lifting Rebar Lifting Rebar Lifting 4

Concreting GEDUNG PERKANTORAN JAKARTA Ground Anchor Davy Sukamta 5

Ground Anchor GEDUNG KANTOR PLUIT SELATAN RAYA - JAKARTA Rekomendasi Buku Untuk Sheet Pile 6

11/8/2012 Test Triaxial: Arah Bidang Runtuh Terhadap Mekanisme Aktif dan Passif y=45-f/2 q=45+f/2 Mekanisme Aktif dan Passif Mekanisme Aktif dan Passif sv= sv= sh= sh= sv= sv= sh= sh= 7

Hubungan Koefisien Lateral dan Regangan t Besarnya Tegangan Aktif t f Kp t f Pasir f =sh =sv s =sh =sv s Ko sa==sh=ka. sv Expansion Ka Lateral Strain Compression Ka =tan2 45 f /2 Ka = Tekanan Aktif: Pasir Besarnya Tegangan Pasif t f sh==x Ka Lebih dari satu lapis : s sp==sh=kp. sv sh==x Ka K p = = 1 Ka = 8

Tekanan Aktif dan Pasif: Pasir Tekanan Aktif dan Pasif: Pasir Ada Beban Merata g h s g h q q p p s p g h Kp g h Ka g h qkp g h Kp sh = g h +q) Kp g h Ka pka g h Depth sh = g h +p) Ka Depth Depth Depth Tegangan Effektif Pengaruh Beban dan Air Tanah a h h2 g = g - gw s = g.h h1 s = gh1 + g h2 = g (h1+ h2) - gw.h2 a a s = s - s = tegangan efektif s = tegangan total 9

Pengaruh kemiringan tanah diatas: Cantilever & Gravity Wall Cantilever Gravity Wall Pasir Shear stress Penaruh C-Kohesi Tanah Tekanan Aktif Rankine =s.ka =svka 2c Ka C Lempung (b) Normal stress 10

Tekanan Pasif Rankine Tekanan Aktif Rankine untuk Perencanaan =sv.kp =svkp +2c Kp (c) Beban pada dinding Beban pada dinding 11

Disain Dinding Penahan Tanah: Stabilitas Retaining Wall 1. Overtuning Stabilitas 4. Bearing Capacity 1. Overtuning 2. Sliding 2. Sliding 3. Excentricity 1. Overturning SF = 1.5 2.0 4. Bearing Capacity 5. Over All Stability 3. Excentricity MR MR 2. Sliding Overtuning a 3. Excentricity Pv Pa Ph a 12

Overtuning t x x x x x f c s = c + s tan f s Where s = effective normal stress on plane of shearing c = cohesion, or apparent cohesion f = angle of friction Sliding Sliding 13

1. Contoh Soal Berikut ini gambar cross section dari cantilever retaining wall. Hitung angka keamanan (factor of safety) yang menyangkut overtuning dan sliding!!! 1. Solusi : 14

1. Contoh Soal Berikut ini gambar cross section dari cantilever retaining wall. Hitung angka keamanan (factor of safety) yang menyangkut overtuning dan sliding!!! Sheet Pile KLASIFIKASI STRUKTUR SHEET PILE Cantilever Pile/ Sheet Pile Steel Pipe Pile - Japan 15

Anchored Type Tie Rod Type Structure Anchored Type Deadman Type Structure Double TieRod Type Structure Tie Rod Type-I Tie Rod Type-II Steel Pipe Pile - Japan Steel Pipe Pile - Japan Steel Pipe Pile - Japan 16

Tie Rod Type-III Anchored Sheet Pile Steel Pipe Pile - Japan Piling Handbook - Arcelor Sheet pile Batter-Pile Anchor Type Ground anchor 17

Dermaga Tanjung Emas +3.60 mlws 0.00 mlws f -10.0 mlws g C Existing Very Soft SeaClay Bed 29.4 1o 16.0 Sand Very Soft Clay 31.9 1.0 1o 24o16.0 16.5 Very Soft Clay 25.4 1o 15.5 C f g Eu = 250 Cu Soft Clay 41.9 1o 16.0 Soft Clay 43.4 2o 16.5 Stiff Clay 65.0 4o 17.0 80.0 4o 17.5 Stiff Clay Relieving Platforms Retaining Wall Relieving Platform Type Structure Steel Pipe Pile - Japan Piling Handbook - British 18

Double Sheet Pile Wall Type Structure Double Sheet Pile Wall Type Steel Pipe Pile - Japan Cellular Type Structure Cofferdams Piling Handbook - Arcelor Piling Handbook - Arcelor 19

Piling Handbook - Arcelor Cofferdams Metoda Perhitungan Sheet Pile 1. Metoda Elemen Hingga Anchor: Pegas Sheet Pile: Beam Element Parameter Tanah: C (kohesi) f (Sudut geser dalam) E (Young s modulus) u (Poisson s ratio) Piling Handbook - Arcelor M < M konvensional 20

2. Beam on Elastic Foundation 3. Metoda Konvensional O Anchor Anchor: Pegas Tekanan Tanah Aktif dan Pasif Tekanan aktif Tahanan pasif tanah: Pegas Keseimbangan Gaya Horizontal dan Momen di Titik O Cantilever Pile/ Sheet Pile Cantilever Pile/ Sheet Pile 21

11/8/2012 Cantilever Pile/ Sheet Pile Tegangan Lateral Pada Cantilever Pile/ Sheet Pile Aktif Pasif Cantilever Sheet Pile O aktif pasif C D S Mc = 0 OD = 1.20 OC Mmax pada zero shear 22

11/8/2012 Metoda Konvensional: 1. Free Earth Support o Metoda Konvensional: 1. Free Earth Support Tegangan Lateral Anchored Sheet Pile o Aktif Pasif 23

Metoda Konvensional: 1. Free Earth Support Metoda Konvensional: 1. Free Earth Support O O aktif pasif aktif pasif Panjang teoritis d: Keseimbangan momen di titik O Gaya angkur : Keseimbangan gaya horizontal Untuk Disain Panjang d : SF momen di titik O = 2.0 Piling Handbook -British 24

11/8/2012 Metoda Konvensional: 2. Fixed Earth Support o Metoda Konvensional: 2. Fixed Earth Support Metoda Konvensional: 2. Fixed Earth Support Aktif Pasif Pasif Aktif 25

Metoda Konvensional: 2. Fixed Earth Support Aktif Pasif Pasif Aktif 2. Fixed Earth Support Retaining Walls Metoda Konvensional: 26

Retaining Walls CONTOH STRUKTUR SHEET PILE Braced Cut Excavation 27

Multi-Strut Type 28

PINTU GESER 1 TT TL TL BM.1 PINTU GESER 2 TL TT TL TL TL 11/8/2012 BORED PILE DENGAN DISKONTINUITAS DARI HASIL PENGUJIAN 29

Sand Clay Soft to Medium Stiff gh C >4 gh C <4 Thank You! gh 31