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Matakuliah : S2094 / Rekayasa Pondasi Tahun : 2005 Versi : 1.1

Matakuliah : S2094 / Rekayasa Pondasi Tahun : 2005 Versi : 1.1. Pertemuan 09 Penurunan Pondasi Dangkal. Shallow Foundations - Settlement. Design Requirements Overview of Settlement Analysis Methods Induced Stresses Beneath Shallow Foundations Settlement Analysis Based on Laboratory Tests

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Matakuliah : S2094 / Rekayasa Pondasi Tahun : 2005 Versi : 1.1

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  1. Matakuliah : S2094 / Rekayasa Pondasi Tahun : 2005 Versi : 1.1 Pertemuan 09Penurunan Pondasi Dangkal

  2. Shallow Foundations - Settlement • Design Requirements • Overview of Settlement Analysis Methods • Induced Stresses Beneath Shallow Foundations • Settlement Analysis Based on Laboratory Tests • Settlement Spreadsheet • Settlement in Analysis Based on In-situ Tests • Settlement in Stratified Soils • Differential Settlement • Rate of Settlement • Accuracy of Settlement Predictions

  3. Design Requirements • Total Settlement () • Differential Settlement(D)

  4.  versus D (b) Palacio de las Bellas Artes, Mexico City (a)Leaning Tower, Pisa

  5. Overview; Settlement Analysis • Plate Load Tests • Based on Laboratory Test Data • Based on In-situ Tests

  6. Plate Load Tests

  7. Methods for Calculating Induced Stresses • Boussinesq’s Method • Westergaard’s Method • Simplified Method • 60o Approximation ( CE 3321 textbook)

  8. Boussinesq’s Method

  9. Boussinesq’s Method

  10. Boussinesq’s Method

  11. Pressure BulbsNewmark’s Solution of Boussinesq Method

  12. Chart Solutions (Stress Bulbs)

  13. Chart Solutions (Stress Bulbs)

  14. Westergaard’s Method • Provided solution for layered soils • Point Loads

  15. Westergaard’s Method • For distributed loads

  16. Simplified Methods (Approximate) • For circular foundations (Poulos and Davis, 1974)

  17. Simplified Methods (Approximate) • For square foundations (Poulos and Davis, 1974)

  18. Simplified Methods (Approximate) • For continuous foundations (Poulos and Davis, 1974)

  19. Simplified Methods (Approximate) • For rectangular foundations (Poulos and Davis, 1974)

  20. Approximate Methods • 1:2 method (60° approximation)

  21. Computer Software FTGSETT (settlement.xls)

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