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Geotechnical
Issue: Excessive settlement of soft soils and poor bearing capacity within stress bulb |
Solution: Improved Ground with Stone Columns or Deep Soil Mixing
Settlement Reduction Principle:
- Equal deformation in soil and reinforcing column.
- Vertical stress distribution according to column stiffness and area replacement ratio, Ar.
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Settlement Reduction Factor, n, by Ground Improvement Method:
- Vibro-Stone Columns, n: 2 –3
- Cement Deep Soil Mixing, n: 10 - 50
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Typical Allowable Bearing Capacities by Method
- Vibro-Stone Columns: 2,000 to 4,000 psf
- Cement deep Soil Mixing: 4,000 to 8,000 psf
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Factor Affecting Soil-Cement Product |
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