Stress Increment Solution Charts for Soil Consolidation Analysis

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Dr. Muhannad Ismeik
Dr. Muhannad Ismeik
1 University of Jordan

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Current practice of estimating average stress increment required for consolidation settlement computations employs mid-depth stress approach or multiple application of sublayer technique, which are tedious and difficult methods to implement for hand calculations. This paper presents simplified charts to estimate such a stress. The influence factor needed to estimate the average stress increment is calculated based on the integration of Boussinesq’s equations for common foundations and various soil configurations. The results are presented in a series of normalized nondimensional charts, which are independent of structural loads and soil characteristics. The derived charts are useful especially when the compressible layer is not directly located underneath the loaded foundation and they avoid the necessity of dividing the soil into a series of sublayers to obtain a realistic value of average stress increment. They can be readily implemented into design allowing accurate prediction of consolidation settlement or can serve as a powerful tool for optimizing and proportioning the dimensions of footings under certain allowable settlement where otherwise an iterative tedious solution is required. Illustrative examples are presented to demonstrate the applicability and efficiency of the suggested charts for consolidation settlement computations.

17 Cites in Articles

References

  1. A Balasubramaniam,R Brenner (1981). Consolidation and Settlement of Soft Clay.
  2. J Boussinesq (1885). Applications Des Potentiels a l'etude de l'equilibre et du Mouvement Des Solids Elastiques.
  3. J Bowles (1995). Foundation analysis and design.
  4. M Budhu (2000). Soil mechanics and foundations.
  5. J Cernica (1994). Geotechnical engineering: soil mechanics.
  6. D Coduto,M Yeung,W Kitch (2010). Geotechnical engineering: principles and practices.
  7. R Craig (2004). Craig's Soil Mechanics.
  8. B Das (2010). Principles of foundation engineering.
  9. I Dunn,L Anderson,F Kiefer (1980). Investigations in Science: A Modular Approach New York: John Wiley & Sons, 1974; Canada: Wiley Publishers of Canada, 1977.
  10. R Fadum (1948). Influence values for estimating stresses in elastic foundations.
  11. R Holtz,W Kovacs (1981). An introduction to geotechnical engineering.
  12. Muhannad Ismeik (2012). Practical evaluation of induced stress for calculation of consolidation settlement of soil.
  13. J Mcphail,P Hellen,S Britton,C Colvin,T Silvey,J Jones (2000). Evaluation of consolidation settlement using the sublayer method.
  14. N Newmark (1935). Simplified computation of vertical stress in elastic foundations.
  15. H Poulus,E Davis (1974). Elastic solutions for soil and rock mechanics.
  16. W Steinbrenner (1936). Fourth Conference on the Dynamics of Foundation Beds, Foundations, and Underground Structures.
  17. Karl Terzaghi (1943). Theoretical Soil Mechanics.

Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

Dr. Muhannad Ismeik. 2013. \u201cStress Increment Solution Charts for Soil Consolidation Analysis\u201d. Global Journal of Research in Engineering - J: General Engineering GJRE-J Volume 12 (GJRE Volume 12 Issue J4): .

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Journal Specifications

Crossref Journal DOI 10.17406/gjre

Print ISSN 0975-5861

e-ISSN 2249-4596

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v1.2

Issue date

January 6, 2013

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English

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Current practice of estimating average stress increment required for consolidation settlement computations employs mid-depth stress approach or multiple application of sublayer technique, which are tedious and difficult methods to implement for hand calculations. This paper presents simplified charts to estimate such a stress. The influence factor needed to estimate the average stress increment is calculated based on the integration of Boussinesq’s equations for common foundations and various soil configurations. The results are presented in a series of normalized nondimensional charts, which are independent of structural loads and soil characteristics. The derived charts are useful especially when the compressible layer is not directly located underneath the loaded foundation and they avoid the necessity of dividing the soil into a series of sublayers to obtain a realistic value of average stress increment. They can be readily implemented into design allowing accurate prediction of consolidation settlement or can serve as a powerful tool for optimizing and proportioning the dimensions of footings under certain allowable settlement where otherwise an iterative tedious solution is required. Illustrative examples are presented to demonstrate the applicability and efficiency of the suggested charts for consolidation settlement computations.

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Stress Increment Solution Charts for Soil Consolidation Analysis

Dr. Muhannad Ismeik
Dr. Muhannad Ismeik University of Jordan

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