Design Methodology for Foundations on Stone Columnsby Robert C. Bachus, Georgia Inst of Technology, United States,
Richard D. Barksdale, Georgia Inst of Technology, United States,
Abstract: Stone columns offer the geotechnical engineer a valuable and viable technique for stabilizing sites underlain by soils ranging from soft clays to loose silty sands. A discussion of the design methodology prepared by the authors for the Federal Highway Administration (FHWA) is presented. While emphasis concentrates on soft soil applications, use of stone columns in loose silty sands is also discussed. Important considerations of structure type, design loadings, field construction and inspection aspects are presented. For appropriate soil and site conditions, stone columns can significantly accelerate the time for consolidation, improve stability, dissipate pore pressures and prevent liquefaction of subsurface soils.
Subject Headings: Soil stabilization | Soft soils | Stone columns | Rocks | Clays | Soil liquefaction | Consolidated soils | Soil pressure
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