ANALISIS KESTABILAN LERENG MENGGUNAKAN PLAXIS

Parameter Tanah

Material Moddel Model Mohr-Coloumb Mohr-Coloumb Mohr-Coloumb Linear Elastis -

Type of Behaviour Type Undrained (A) Drained Drained Non Pourus -

Berat Kering γ unsat 18 18 18.8 24 kN/m³

Berat Basah γ sat 18.11 18.11 20.5 24 kN/m³

Permeabilitas x kx 0.000001 0.000001 0,001 - m//d

Permeabilitas y ky 0.000001 0.000001 0,001 - m/d

Modulus Young E' 25000 20000 6000 14862705 kN/m²

Poison's Ratio v 0.25 0.25 0.3 0.3 -

Kohesi c 78.1 81.8 2 - kN/m²

Sudut Geser φ 26.81 26.11 35 - º

Dilatansi ψ 0 0 5 - º

Unit Parameter Symbol Lempung Berpasir 1 Lempung Berpasir 2 Timbunan DPT Gravity Wall

Output Version 20.0.0.119

Project description

Project filename Step

Date

Company

Redatul Husna 2010921018 12/13/2022

Alfa 10 101 TB Mekanika Tanah II

Deformed mesh |u| (scaled up 0.500*10

^-3

times) Maximum value = 3570 m (Element 310 at Node 2473)

[*10³ m]

0 5 10 15 20 25 30 35 40 45 50 55

-4.00 0.00 4.00 8.00 12.00 16.00 20.00 24.00 28.00 32.00 36.00 40.00 44.00

-12.00 -8.00 -4.00 0.00 4.00 8.00 12.00 16.00

Output Version 20.0.0.119

Project description

Project filename Step

Date

Company

Redatul Husna 2010921018 12/13/2022

Alfa 10 101 TB Mekanika Tanah II

Total displacements |u| (scaled up 0.500*10

^-3

times) Maximum value = 3570 m (Element 310 at Node 2473)

-4.00 0.00 4.00 8.00 12.00 16.00 20.00 24.00 28.00 32.00 36.00 40.00 44.00

-8.00 -4.00 0.00 4.00 8.00 12.00 16.00

Project description : Alfa 10 Output Version 20.0.0.119 Company : TB Mekanika Tanah II

Project filename : Alfa 10

Output : Calculation information

Date : 12/13/2022 Page : 1

Step info

Phase Safety factor [Phase_1]

Step Initial

Calulation mode Classical mode

Step type Safety

Updated mesh False

Solver type Picos

Kernel type 64 bit

Extrapolation factor 1.000

Relative stiffness -0.05631E-12

Multipliers

Soil weight ΣM_Weight 1.000

Strength reduction factor M_sf -1.125E-3 ΣM_sf 10.29

Time Increment 0.000 End time 0.000

Staged construction

Active proportion total area M_Area 0.000 ΣM_Area 1.000

Active proportion of stage M_Stage 0.000 ΣM_Stage 0.000

Forces

F_X 0.000 kN/m

F_Y 0.000 kN/m

Consolidation

Realised P_Excess,Max 90.78 kN/m²

Output Version 20.0.0.119

Project description

Project filename Step

Date

Company

Redatul Husna 2010921018 12/13/2022

Alfa 18 101 TB Mekanika Tanah II

Deformed mesh |u| (scaled up 0.500*10

^-3

times) Maximum value = 1904 m (Element 23 at Node 3186)

[*10³ m]

0 4 8 12 16 20 24 28 32 36 40

-3.00 0.00 3.00 6.00 9.00 12.00 15.00 18.00 21.00 24.00 27.00 30.00 33.00

-6.00 -3.00 0.00 3.00 6.00 9.00 12.00

Output Version 20.0.0.119

Project description

Project filename Step

Date

Company

Redatul Husna 2010921018 12/13/2022

Alfa 18 101 TB Mekanika Tanah II

Total displacements |u| (scaled up 0.500*10

^-3

times) Maximum value = 1904 m (Element 23 at Node 3186)

-2.50 0.00 2.50 5.00 7.50 10.00 12.50 15.00 17.50 20.00 22.50 25.00 27.50 30.00 32.50

-5.00 -2.50 0.00 2.50 5.00 7.50 10.00 12.50

Project description : Alfa 18 Output Version 20.0.0.119 Company : TB Mekanika Tanah II

Project filename : Alfa 18

Output : Calculation information

Date : 12/13/2022 Page : 1

Step info

Phase Safety factor [Phase_1]

Step Initial

Calulation mode Classical mode

Step type Safety

Updated mesh False

Solver type Picos

Kernel type 64 bit

Extrapolation factor 1.000

Relative stiffness 0.01260E-12

Multipliers

Soil weight ΣM_Weight 1.000

Strength reduction factor M_sf 0.06353E-3 ΣM_sf 7.604

Time Increment 0.000 End time 0.000

Staged construction

Active proportion total area M_Area 0.000 ΣM_Area 1.000

Active proportion of stage M_Stage 0.000 ΣM_Stage 0.000

Forces

F_X 0.000 kN/m

F_Y 0.000 kN/m

Consolidation

Realised P_Excess,Max 94.12 kN/m²

Output Version 20.0.0.119

Project description

Project filename Step

Date

Company

Redatul Husna 2010921018 12/13/2022

Alfa 39 101 TB Mekanika Tanah II

Deformed mesh |u| (scaled up 1.00*10

^-3

times) Maximum value = 606.3 m (Element 755 at Node 5661)

[*10³ m]

0 2 4 6 8 10 12 14

-2.00 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00

-4.00 -2.00 0.00 2.00 4.00 6.00 8.00 10.00

Output Version 20.0.0.119

Project description

Project filename Step

Date

Company

Redatul Husna 2010921018 12/13/2022

Alfa 39 101 TB Mekanika Tanah II

Total displacements |u| (scaled up 1.00*10

^-3

times) Maximum value = 606.3 m (Element 755 at Node 5661)

-2.00 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00

-2.00 0.00 2.00 4.00 6.00 8.00 10.00

Project description : Alfa 39 Output Version 20.0.0.119 Company : TB Mekanika Tanah II

Project filename : Alfa 39

Output : Calculation information

Date : 12/13/2022 Page : 1

Step info

Phase Safety Factor [Phase_1]

Step Initial

Calulation mode Classical mode

Step type Safety

Updated mesh False

Solver type Picos

Kernel type 64 bit

Extrapolation factor 1.000

Relative stiffness 0.1274E-12

Multipliers

Soil weight ΣM_Weight 1.000

Strength reduction factor M_sf 8.173E-6 ΣM_sf 6.145

Time Increment 0.000 End time 0.000

Staged construction

Active proportion total area M_Area 0.000 ΣM_Area 1.000

Active proportion of stage M_Stage 0.000 ΣM_Stage 0.000

Forces

F_X 0.000 kN/m

F_Y 0.000 kN/m

Consolidation

Realised P_Excess,Max 87.83 kN/m²

Kelompok Keahlian Geoteknik

Departemen Teknik Sipil – Fakultas Teknik Universitas Andalas

Tugas Besar Mekanika Tanah II

Redatul Husna (2010921018)

Rekapitulasi:

Manual Plaxis

1 18 2.26 7.604

2 10 3.98 10.29

3 39 1.24 6.145

Percobaan Ke - Alfa SF

Kesimpulan:

Dari hasil perhitungan manual dan menggunakan software didapatkan hasil nilai

faktor keamanan berbeda. Dapat dilihat pada percobaan ke-2 dengan alfa 10º,

pada perhitungan manual didapat nilai SF = 3.98 sedangkan jika menggunakan

software nilai SF = 10.29. Jadi, untuk nilai faktor keamanannya Berbeda.

Output Version 20.0.0.119

Project description

Project filename Step

Date

Company

Redatul Husna 2010921018 12/13/2022

Stabilitas Lereng 1 TB Mekanika Tanah II

Deformed mesh |u| (scaled up 20.0 times)

Maximum value = 0.03135 m (Element 412 at Node 1695)

[m]

0 0.1 0.2 0.3 0.4 0.5 0.6

2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00

-2.00 0.00 2.00 4.00 6.00 8.00 10.00

Output Version 20.0.0.119

Project description

Project filename Step

Date

Company

Redatul Husna 2010921018 12/13/2022

Stabilitas Lereng 1 TB Mekanika Tanah II

Total displacements |u| (scaled up 20.0 times) Maximum value = 0.03135 m (Element 412 at Node 1695)

2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00

0.00 2.00 4.00 6.00 8.00

Output Version 20.0.0.119

Project description

Project filename Step

Date

Company

Redatul Husna 2010921018 12/13/2022

Stabilitas Lereng 101 TB Mekanika Tanah II

Deformed mesh |u| (scaled up 0.500*10

^-3

times) Maximum value = 1208 m (Element 1549 at Node 11172)

[*10³ m]

0 4 8 12 16 20 24 28 32

-2.50 0.00 2.50 5.00 7.50 10.00 12.50 15.00 17.50 20.00 22.50 25.00 27.50

-2.50 0.00 2.50 5.00 7.50 10.00 12.50

Output Version 20.0.0.119

Project description

Project filename Step

Date

Company

Redatul Husna 2010921018 12/13/2022

Stabilitas Lereng 101 TB Mekanika Tanah II

Total displacements |u| (scaled up 0.500*10

^-3

times) Maximum value = 1208 m (Element 1549 at Node 11172)

2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00

0.00 2.00 4.00 6.00 8.00

Output Version 20.0.0.119

Project description

Project filename Step

Date

Company

Redatul Husna 2010921018 12/14/2022

Stabilitas Lereng 101 TB Mekanika Tanah II

Cartesian effective stress σ'

_xx

(scaled up 0.0100 times)

Maximum value = 0.1574 kN/m² (Element 1008 at Node 92) Minimum value = -78.60 kN/m² (Element 1304 at Node 11570)

-2.00 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 24.00 26.00 28.00

-2.00 0.00 2.00 4.00 6.00 8.00 10.00 12.00

Output Version 20.0.0.119

Project description

Project filename Step

Date

Company

Redatul Husna 2010921018 12/14/2022

Stabilitas Lereng 101 TB Mekanika Tanah II

Cartesian effective stress σ'

_yy

(scaled up 5.00*10

^-3

times)

Maximum value = 6.972 kN/m² (Element 595 at Node 1557) Minimum value = -136.0 kN/m² (Element 1185 at Node 3814)

[kN/m²]

-140.00 -130.00 -120.00 -110.00 -100.00 -90.00 -80.00 -70.00 -60.00 -50.00 -40.00 -30.00 -20.00 -10.00 0.00 10.00

0.00 2.50 5.00 7.50 10.00 12.50 15.00 17.50 20.00 22.50 25.00 27.50

-2.50 0.00 2.50 5.00 7.50 10.00 12.50

Project description : Stabilitas Lereng Output Version 20.0.0.119 Company : TB Mekanika Tanah II

Project filename : Stabilitas Lereng Output : Calculation information

Date : 12/13/2022 Page : 1

Step info

Phase Cek Kondisi Exsisting [Phase_1]

Step Initial

Calulation mode Classical mode

Step type Safety

Updated mesh False

Solver type Picos

Kernel type 64 bit

Extrapolation factor 1.000

Relative stiffness 0.3018E-9

Multipliers

Soil weight ΣM_Weight 1.000

Strength reduction factor M_sf 0.01719E-3 ΣM_sf 4.532

Time Increment 0.000 End time 0.000

Staged construction

Active proportion total area M_Area 0.000 ΣM_Area 0.7927

Active proportion of stage M_Stage 0.000 ΣM_Stage 0.000

Forces

F_X 0.000 kN/m

F_Y 0.000 kN/m

Consolidation

Realised P_Excess,Max 41.09 kN/m²

Output Version 20.0.0.119

Project description

Project filename Step

Date

Company

Redatul Husna 2010921018 12/14/2022

Sebelum Pembebanan 166 TB Mekanika Tanah II

Deformed mesh |u| (scaled up 20.0 times) Maximum value = 0.05170 m (Element 93 at Node 8402)

[m]

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

-2.50 0.00 2.50 5.00 7.50 10.00 12.50 15.00 17.50 20.00 22.50 25.00 27.50

-2.50 0.00 2.50 5.00 7.50 10.00 12.50

Output Version 20.0.0.119

Project description

Project filename Step

Date

Company

Redatul Husna 2010921018 12/14/2022

Sebelum Pembebanan 166 TB Mekanika Tanah II

Total displacements |u| (scaled up 20.0 times) Maximum value = 0.05170 m (Element 93 at Node 8402)

-2.00 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 24.00 26.00

-2.00 0.00 2.00 4.00 6.00 8.00 10.00 12.00

Output Version 20.0.0.119

Project description

Project filename

Date

Company

Redatul Husna 2010921018 12/14/2022

Sebelum Pembebanan TB Mekanika Tanah II

Cartesian effective stress σ'

_xx

(scaled up 2.00*10

^-3

times)

Maximum value = 216.4 kN/m² (Element 1080 at Node 11327) Minimum value = -224.5 kN/m² (Element 1017 at Node 11928)

-2.00 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 24.00 26.00

-2.00 0.00 2.00 4.00 6.00 8.00 10.00 12.00

Output Version 20.0.0.119

Project description

Project filename

Date

Company

Redatul Husna 2010921018 12/14/2022

Sebelum Pembebanan TB Mekanika Tanah II

Cartesian effective stress σ'

_yy

(scaled up 0.500*10

^-3

times)

Maximum value = 1.005 kN/m² (Element 203 at Node 7528) Minimum value = -970.4 kN/m² (Element 1080 at Node 11325)

-2.00 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 24.00 26.00

-2.00 0.00 2.00 4.00 6.00 8.00 10.00 12.00

Project description : Sebelum Pembebanan Output Version 20.0.0.119 Company : TB Mekanika Tanah II

Project filename : Sebelum Pembebanan Output : Calculation information

Date : 12/14/2022 Page : 1

Step info

Phase Timbunan 2 [Phase_4]

Step Initial

Calulation mode Classical mode

Step type Plastic

Updated mesh False

Solver type Picos

Kernel type 64 bit

Extrapolation factor 0.4263

Relative stiffness 0.7207

Multipliers

Soil weight ΣM_Weight 1.000

Strength reduction factor M_sf 0.000 ΣM_sf 1.000

Time Increment 0.000 End time 0.000

Staged construction

Active proportion total area M_Area 3.641E-3 ΣM_Area 1.000

Active proportion of stage M_Stage 0.1244 ΣM_Stage 1.000

Forces

F_X 0.000 kN/m

F_Y 0.000 kN/m

Consolidation

Realised P_Excess,Max 37.26 kN/m²

Output Version 20.0.0.119

Project description

Project filename Step

Date

Company

Redatul Husna 2010921018 12/14/2022

Setelah Pembebanan 175 TB Mekanika Tanah II

Deformed mesh |u| (scaled up 10.0 times)

Maximum value = 0.06386 m (Element 154 at Node 7466)

[m]

0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6

-2.50 0.00 2.50 5.00 7.50 10.00 12.50 15.00 17.50 20.00 22.50 25.00 27.50

-2.50 0.00 2.50 5.00 7.50 10.00 12.50

Output Version 20.0.0.119

Project description

Project filename Step

Date

Company

Redatul Husna 2010921018 12/14/2022

Setelah Pembebanan 175 TB Mekanika Tanah II

Total displacements |u| (scaled up 10.0 times) Maximum value = 0.06386 m (Element 154 at Node 7466)

-2.00 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 24.00 26.00

-2.00 0.00 2.00 4.00 6.00 8.00 10.00 12.00

Output Version 20.0.0.119

Project description

Project filename Step

Date

Company

Redatul Husna 2010921018 12/14/2022

Setelah Pembebanan 175 TB Mekanika Tanah II

Cartesian effective stress σ'

_xx

(scaled up 2.00*10

^-3

times)

Maximum value = 251.0 kN/m² (Element 1080 at Node 11326) Minimum value = -239.7 kN/m² (Element 1017 at Node 11928)

-2.00 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 24.00 26.00

-2.00 0.00 2.00 4.00 6.00 8.00 10.00 12.00

Output Version 20.0.0.119

Project description

Project filename Step

Date

Company

Redatul Husna 2010921018 12/14/2022

Setelah Pembebanan 175 TB Mekanika Tanah II

Cartesian effective stress σ'

_yy

(scaled up 0.500*10

^-3

times)

Maximum value = 3.748 kN/m² (Element 203 at Node 7528) Minimum value = -869.6 kN/m² (Element 1080 at Node 11325)

-2.00 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 24.00 26.00

-2.00 0.00 2.00 4.00 6.00 8.00 10.00 12.00

Project description : Setelah Pembebanan Output Version 20.0.0.119 Company : TB Mekanika Tanah II

Project filename : Setelah Pembebanan Output : Calculation information

Date : 12/14/2022 Page : 1

Step info

Phase CeK dpt [Phase_6]

Step Initial

Calulation mode Classical mode

Step type Safety

Updated mesh False

Solver type Picos

Kernel type 64 bit

Extrapolation factor 1.000

Relative stiffness -0.09121E-6

Multipliers

Soil weight ΣM_Weight 1.000

Strength reduction factor M_sf 0.4610E-3 ΣM_sf 2.416

Time Increment 0.000 End time 0.000

Staged construction

Active proportion total area M_Area 0.000 ΣM_Area 1.000

Active proportion of stage M_Stage 0.000 ΣM_Stage 0.000

Forces

F_X 0.000 kN/m

F_Y 0.000 kN/m

Consolidation

Realised P_Excess,Max 73.94 kN/m²

Kelompok Keahlian Geoteknik

Departemen Teknik Sipil – Fakultas Teknik Universitas Andalas

Tugas Besar Mekanika Tanah II

Redatul Husna (2010921018)

Rekapitulasi :

Max Min Max Min

Kondisi Awal 4.532 0.157 -78.600 6.972 -136.000

DPT sebelum diberi beban 1.000 216.400 -224.500 1.005 -970.400 DPT setelah diberi beban 2.416 251.000 -239.700 3.748 -869.600 Tegangan Efektif (σ' x) Tegangan Efektif (σ' y)

Keadaan SF