Deformation Behaviors of Geogrid-reinforced Soil Walls: Single-Tier versus Two-Tier Walls
Received: 13 February 2025 | Revised: 5 March 2025 and 13 March 2025 | Accepted: 17 March 2025 | Online: 29 March 2025
Corresponding author: Pham Ngoc Thach
Abstract
Geogrid Reinforced Soil (GRS) walls are used in the construction of bridge abutments, highways, and areas with raised elevations. Regarding conventional GRS walls, the wall facing is usually designed in a single-tier configuration. However, when a large wall height is required, the facing can be designed in a multi-tier configuration. Multi-tiered walls exhibit a more complex behavior than single-tier walls due to interactions between the upper and lower tiers. To gain further understanding of these differences between the two types of GRS walls, a numerical study was conducted to compare the self-weight induced deformation of a single-tier GRS wall to this of a two-tier GRS wall. The deformation behaviors include the horizontal displacement of wall facing, the horizontal displacement of backfill surface, and the tensile strain of geogrid layers.
Keywords:
geogrid, reinforced soil wall, deformation behavior, finite element analysisDownloads
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