Earth pressures acting on a vertical shaft in multi-layered c -φ Soils

I. M. Lee, D. H. Kim, K. Y. Kim, Y. H. Lee, H. P. Moon

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

It is one of the important tasks to evaluate the earth pressure acting on a vertical shaft when designing underground structures. The earth pressure acting on a vertical circular shaft is less than that of a retaining wall in plain strain condition due to three dimensional arching effect. Several researchers have suggested equations to estimate the earth pressure on the vertical circular shaft and verified them by conducting model tests. However, each of estimations shows different results and is not applicable to the vertical shaft in multi-layered soils and/or c -φ soils. In this study, a new equation for estimating the earth pressure acting on the vertical shaft in c -φ soils is proposed by modifying the equations suggested by other researchers. A parametric study is performed to investigate the significance of the cohesion when estimating earth pressures in vertical shafts. A method which can estimate the earth pressure on vertical shafts in layered soils is also proposed by assuming a failure surface in layered soils and using the modified equation. To verify the proposed methods, measured data were collected from three in-situ vertical shafts constructed in multi-layered c -φ soils and compared with analytical solutions.

Original languageEnglish
Title of host publicationProceedings of the 17th International Conference on Soil Mechanics and Geotechnical Engineering
Subtitle of host publicationThe Academia and Practice of Geotechnical Engineering
Pages1409-1412
Number of pages4
DOIs
Publication statusPublished - 2009
Event17th International Conference on Soil Mechanics and Geotechnical Engineering, ICSMGE 2009 - Alexandria, Egypt
Duration: 2009 Oct 52009 Oct 9

Publication series

NameProceedings of the 17th International Conference on Soil Mechanics and Geotechnical Engineering: The Academia and Practice of Geotechnical Engineering
Volume2

Other

Other17th International Conference on Soil Mechanics and Geotechnical Engineering, ICSMGE 2009
CountryEgypt
CityAlexandria
Period09/10/509/10/9

Keywords

  • Earth pressure
  • In-situ measurement data
  • Layered c -φ soil
  • Multi-layered soil
  • Vertical shaft

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology

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  • Cite this

    Lee, I. M., Kim, D. H., Kim, K. Y., Lee, Y. H., & Moon, H. P. (2009). Earth pressures acting on a vertical shaft in multi-layered c -φ Soils. In Proceedings of the 17th International Conference on Soil Mechanics and Geotechnical Engineering: The Academia and Practice of Geotechnical Engineering (pp. 1409-1412). (Proceedings of the 17th International Conference on Soil Mechanics and Geotechnical Engineering: The Academia and Practice of Geotechnical Engineering; Vol. 2). https://doi.org/10.3233/978-1-60750-031-5-1409