Deformation analysis of anchored embedded wall#

Introduction#

The following tutorial describes the workflow for the deformation analysis of an anchored embedded wall. Guided by the task, all necessary input will be defined. After following all steps, the user will be able to model and calculate embedded walls and excavations. The ground-water flow by using module HYDRA is NOT subject of this tutorial, this will be shown in next tutorial.

Note

To understand this tutorial, a basic knowledge of the SSD is required. We recommend to see our online introduction videos.

Objectives and workflow steps#

  1. Start new project

  2. Define materials

  3. System generation in SOFiPLUS(-X)

    1. Soil layers

    2. Anchoring

  4. Load generation in SOFiPLUS(-X)

  5. Construction Stages Geotechnics - CSG

  6. Postprocessing (Results)

Project description#

The following construction steps should be modelled in the numerical analysis:

  • initial phase (K0=0.50)

  • installation of diaphragm wall

  • activation of surcharge loads

  • excavation step 1 to level -2.0 m

  • excavation step 2 to level -4.0 m

  • installation of anchor and prestressing

  • excavation step 3 to level -6.0 m

The surcharge of 10 kPa is a permanent load, the surcharge of 50 kPa is a variable load. Bedrock was assumed at a depth of 20 m below ground surface.

Result to be provided:

  • deformation of wall

  • design bending moment for the wall

../../_images/exp1-system.svg

Materials and cross-sections#

In the video below, it will be shown how to:

  • start with the SSD project

  • create materials and cross-sections.

Title:

Anchored Embedded Wall: Material and cross section generation

Quality:

1080p Full HD

Caption:

English

URL:

https://youtu.be/P_XfLPormD0
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See also

For more details why the SVAL input was used in the video “Anchored Embedded Wall: Material and cross section generation” see How to define the anchor cross-section properties?

Define the materials according the following table.

Number

Material

E [kN/m2]

μ [-]

γ [kN/m3]

γA [kN/m3]

Strength

1
Concrete
C 25/30

3.1476 × 107

0.20

25.0

—
fck=25.0 MPa
fcm=33.0 MPa

2
Reinforcement
B 500 B

2.0 × 108

0.30

78.5

—
fck=25.0 MPa
fcm=33.0 MPa

3
Soil
(hardening-soil)

30000

0.15

19.0

10.0
φ=27.50°
c=10 kPa

51
grouting body
(for anchor)

3.0 × 107

0.20

25

15

—

Define following cross-sections:

Number

Cross-Section

1
Rectangular cross-section
B/H = 1000/800 mm

51
Anchor (will be defined via cross-section properties AQUA SVAL input)
A = 45 cm2, Iy = 1000 cm4

System and load generation#

In this video below, the system and load definition in SOFiPLUS(-X) will be shown.

Title:

Anchored Embedded Wall: System and load generation

Quality:

1080p Full HD

Caption:

English

URL:

https://youtu.be/D6K7mmaz16Y
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Construction stage definition#

In this video below, how to define the construction stages will be shown.

Title:

Anchored Embedded Wall: Construction stage definition

Quality:

1080p Full HD

Caption:

English

URL:

https://youtu.be/oZLmqFkfwBc
Please accept marketing cookies to watch this video.thumbnail