Bearing Capacity and Settlement of Shallow Foundations Located on Liquefiable Cohesive Soil Layers

Liquefaction of sandy soils and corresponding bearing capacity and settlements of such soils are discussed in many research studies; however, estimation of the behavior of cohesive soil layers requires further research. The objective of this article is to introduce practical methods proposed by a number of studies in search of suitable methods to use instead of prescribing ground improvement for all cases. The advantages and limitations of these methods are mentioned so that scholars and engineers could utilize the proper method if it is required. Some of the described methods are somehow new and some others are old ones with years of successful practical experience behind them. The main finding is when a structure is not heavy, irregular in plan, tall or of high risk, bearing capacity and settlements could be estimated using simple equations and ground improvement may be avoided when the requirements are met.

Keywords:

Liquefaction , Clayey sand , Volumetric strain , Residual strength