Numerical Models for the Design of Shallow Foundations for Low-Rise Buildings
For lightly loaded shallow foundations, most problems are due to ground movements caused by factors not related to the weight of the building. Current methods for calculating ground movements associated with changes in the moisture content of partially saturated soils rely on largely empirical techniques and are only capable of providing an estimate of the likely movements. Particular difficulties involved in modelling the behaviour of shrinkable soils for shallow foundations are generally related to boundary conditions. The use of more realistic models for soil behaviour, together with the appropriate laboratory and field testing, could put design and analysis of shallow foundations on to a more rational and scientific basis, permitting the quantitative assessment of the relative merits of a number of different foundation solutions.
KeywordsGround Movement Saturated Soil Stress Path Matric Suction Expansive Soil
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- BURLAND J. B. (1965). Some aspects of the mechanical behaviour of partly saturated soils. Proceedings of the International Research and Engineering Conference on Expansive Clay Soils, Australia. Butterworth, 1: 270–278.Google Scholar
- COOLING L. F. (1951). Some foundation problems in Great Britain. Proceedings of Building Research Congress, London, September, Division 1, Part III: 157–164.Google Scholar
- COOLING L. F. AND WARD W. H. (1948). Some examples of foundation movements due to causes other than structural loads. Proceedings of 2nd International Conference on Soil Mechanics and Foundation Engineering, Rotterdam, 2: 162–167.Google Scholar
- CRILLY M. S., DRISCOLL R. M. C. AND CHANDLER R. J. (1992). Seasonal ground and water movement observations from an expansive clay site in the UK. Proceedings of the 7th International Conference on Expansive Soils, Dallas, 1: 313–318.Google Scholar
- DRISCOLL R. M. C., CRILLY M. S. AND BUTCHER A. P. (1996). Foundations for low-rise buildings. The Structural Engineer, vol. 74, 11/4: 179–185.Google Scholar
- HARDING H. J. B. AND GLOSSOP R. (1951). The influence of modern soil studies on the construction of foundations. Proceedings of Building Research Congress, London, September, Division 1, Part III: 146–156.Google Scholar
- NAYLOR D.J. (1997). Private communication.Google Scholar
- NAYLOR D.J., TONG S-L. AND SHAHKARAMI A.A. (1989). Numerical modelling of saturation shrinkage. Proceedings of the International Symposium on Numerical Models in Geomechanics, Niagara Falls, Canada, 636–647.Google Scholar
- NOBARI E. S. AND DUNCAN J. M. (1972). Movements in dams due to reservoir filling. Proceedings of the American Society of Civil Engineers Special Conference on Performance of Earth and Earth-supported structures. Purdue University, Indiana, 797–815.Google Scholar
- RANKINE W. J. M. (1862). Civil Engineering, p 380. 26th edition. Charles Griffin and Company, London.Google Scholar
- SKINNER H.D., CHARLES J.A. AND WATTS K.S. (1998). Ground deformations and stress redistribution due to a reduction in volume of zones of soil at depth. Accepted for publication in Geotechnique.Google Scholar