Sequential Construction of a Geotextile-Reinforced Soil Retaining Wall Abaqus
This example been chosen from Example 7.5 Sam Helwany book
geosynthetic-reinforced soil (GRS) walls are used when a sudden change of elevation is desired Geosynthetics are made of polymers such as polyester, polyethylene
Two types of geosynthetics are widely used for soil reinforcement 1-geotextiles 2-geogrids
The part of the backfill that contains the reinforcement is called the reinforced soil, and the part of the backfill behind that is called the retained soil , see the picture below
In this example, we simulate sequential construction (layer by layer) of a geotextile-reinforced soil retaining wall in Abaqus software
The wall is constructed in 10 equal layers each 0.3 m thick. Each layer is constructed in a 1-second period, during which the self-weight of the soil layer is applied. The total construction time is 10 seconds
The geotextile reinforcement is 3 mm thick and has a elastic modulus of 20,000 kPa
For simulation Geotextile ,we use Beam elements
The soil is assumed to be elastoplastic, obeying the cap model with cap hardening properties
In the first calculation step, the entire wall is removed from the finite element mesh except for the bottom soil layer, the first reinforcement layer, and the first skin layer. Then the layers are added, one by one, in subsequent calculation steps. The self-weight of each layer is applied using the gravity option
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