Development of Plane Strain Ratio for Soil Nailing Wall in Clay

Abstract

Deep excavation analysis, the numerical modelling is now often utilized. Deep excavation is, in fact, a three-dimensional issue. Two-dimensional analysis is still often used for practical purposes. For deformation analysis, plane strain ratio (PSR) is an option to acquire three-dimensional behaviour from two-dimensional analysis. For braced excavations, PSR is well established, but it is yet unknown how to construct retaining walls using soil nails. The aim of this paper is to propose the PSR chart for a soil nailing wall used as a retaining structure in clayey soil with an asymmetrical layout. The excavation case history is adopted for this study. Later, the length (L) and width (B) of the excavated area were varied as part of three-dimensional parametric research to create a soil nailing wall PSR chart.