Influence of eccentricity of H-shaped steel in soil-cement wall on vertical bearing capacity
Influence of eccentricity of H-shaped steel in soil-cement wall on vertical bearing capacity
Soil-cement walls are a type of earth-retaining wall constructed by inserting H-shaped steel beams into soil-cement, which is made by mixing in-situ soil with a cement-based suspension. While earth-retaining walls are primarily expected to resist horizontal soil-water pressure, vertical bearing capacity is also required when using top-down construction methods or ground anchoring, or when the earth-retaining wall is used as a wall pile. When evaluating the vertical bearing capacity of an earth-retaining wall, consideration must be given not only to the vertical bearing capacity of the soil, but also to the bond resistance and shear resistance between the steel and the soil-cement and the bearing resistance of the soil-cement at the tip of the steel. Although H-shaped steel beams can be eccentric within the soil-cement cross section due to installation inaccuracy, the effect of steel eccentricity on vertical bearing capacity has not been investigated. Therefore, in this study, we conducted vertical loading tests on a cylindrical model pile using a pressurized tank. The model pile was extracted from one of the columns of a soil-cement wall (a row with several columns). The results confirm that the eccentricity of the steel reduces the bond resistance, shear resistance, and bearing resistance, but increases the residual bond resistance and shear resistance.
Ryo Kiritani; Shuichi Shimomura
11th International Conference on Physical Modelling in Geotechnics (ICPMG2026)
Special Session 1: Physical modelling – from Practice/Industry to Academia
https://doi.org/10.53243/ICPMG2026-42