Influence of Geologic Development on Horizontal Stress in Soil

by Fred H. Kulhawy, Cornell Univ, United States,
John F. Beech, Cornell Univ, United States,
Charles H. Trautmann, Cornell Univ, United States,



Document Type: Proceeding Paper

Part of: Foundation Engineering: Current Principles and Practices

Abstract:

Geologic history commonly controls the stress in natural soils, so that an understanding of the geology allows an assessment of the horizontal stress. This paper describes mechanistically how stresses develop in soils and how mineralogy, pore water chemistry, diagenetic (post-depositional) processes, and other factors influence the in-situ stresses. Three equations are used to relate the horizontal stress to the friction angle and stress history for several soils. These results then are generalized to a variety of other soils and geologic environments. The results can be used directly in effective stress design equations requiring a knowledge of the horizontal stress.

Subject Headings: Soil stress | Geology | Foundation design | Subsurface investigation | Stress history | Stress analysis | Soil structures

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