Discussion on Application of Empirical Formulas for Ultimate Bearing Capacity

Abstract:

Terzaghi equation is widely used in practice to determine Ultimate Bearing Capacity (UBC). Recent research indicates that exact solution of UBC could be got with the slip line method if the soil is ideal elastic-plastic material. In this paper, dimensionless UBC is gained using ABC software based on the slip line method and is compared with that by Terzagh equation with based on empirical formula. It shows that error of UBC is caused by empirical formula. However, the accuracy of UBC relates to safety and economy of the engineering. Given empirical formulas have a wide application in practice, the scope of application of the four classic empirical formulas is discussed in different range of allowable error. The applicable scope of the four classic empirical formulas within the margin of error is discussed and the results can facilitate the application of classic empirical formulas in practice.

• Periodical: Advanced Materials Research (Volumes 919-921)
• Pages: 660-665
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.919-921.660
• Online since: April 2014
• Authors: Hui Wu Jin*, Hong Wei Song
• Keywords: Bearing Capacity of Foundation, Shallow Foundation, Slip Line

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