pysigmap 0.1.3

Application software for calculating the preconsolidation pressure from the incremental loading oedometer testing

pySigmaP

Open-source application software developed in Python3 for interpreting the preconsolidation pressure of fine-grained soils in incremental loading oedometer testing. pySigmaP includes nine methods such as the methods of Casagrande, Pacheco-Silva, Butterfield, Oikawa, Becker et al., Morin, Onitsuka et al., Wang and Frost, and Boone.

• Free software: BSD 2-Clause License

• Documentation: https://pysigmap.readthedocs.io.

Features

• Documentation

• PyPI

• GitHub

• Open source and free software: BSD-2-Clause.

References

Becker, D. E., Crooks, J. H. A., Been, K., & Jefferies, M. G. (1987). Work as a criterion for determining in situ and yield stresses in clays. Canadian Geotechnical Journal, 24, 4, 549-564, https://doi.org/10.1139/t87-070.

Boone, S. J. (2010). A critical reappraisal of “preconsolidation pressure” interpretations using the oedometer test. Canadian Geotechnical Journal, 47, 3, 281-296. https://doi.org/10.1139/T09-093.

Butterfield, R. (1979). A natural compression law for soils (an advance on e–log p’). Geotechnique, 29, 4, 469-480, https://doi.org/10.1680/geot.1979.29.4.469.

Casagrande, A. (1936). The determination of pre-consolidation load and its practical significance. In Proceedings of the First International Conference on Soil Mechanins and Foundations Engineering, 3, 60-64.

Morin, P. (1988). Work as a criterion for determining in situ and yield stresses in clays: Discussion. Canadian Geotechnical Journal, 25, 4, 845-847, https://doi.org/10.1139/t88-096.

Oikawa, H. (1987). Compression Curve of Soft Soils. Soils and Foundations, 27, 3, 99-104, https://doi.org/10.3208/sandf1972.27.3_99.

Onitsuka, K., Hong, Z., Hara, Y., & Yoshitake, S. (1995). Interpretation of Oedometer Test Data for Natural Clays. Soils and Foundations, 35, 3, 61-70, https://doi.org/10.3208/sandf.35.61.

Pacheco Silva, F. 1970. A new graphical construction for determination of the pre-consolidation stress of a soil sample. In Proceedings of the 4th Brazilian Conference on Soil Mechanics and Foundation Engineering, Rio de Janeiro, Brazil. Vol. 2, No.1, pp. 225–232.

Wang, L. B., & Frost, J. D. (2004). Dissipated strain energy method for determining preconsolidation pressure. Canadian Geotechnical Journal, 41, 4, 760-768, https://doi.org/10.1139/t04-013.

History

0.1.0 (2020-10-10)

• First release on PyPI.

0.1.1 (2020-10-10)

• Minors updates to html documentation.

0.1.2 (2020-10-11)

• Minors updates to html documentation.

0.1.3 (2020-11-30)

• Improvements of figures styles.