Design Chart of a footing located on a Crest of the Unsaturated Soil slopes

Authors

  • Suhail A. A. Khattab Civil Engineering Department, University of Mosul, Mosul, Iraq
  • Bayer J. Al-Sulaifanie Civil Engineering Department, University of Mosul, Mosul, Iraq
  • Rabi' A. Mohammed Civil Engineering Department, University of Mosul, Mosul, Iraq

DOI:

https://doi.org/10.25007/ajnu.v8n4a463

Keywords:

Design Chart, footing, Unsaturated Soil, slope

Abstract

A parametric study points out the effect of various influential parameters on the stability of the unsaturated clayey and alluvial soil slopes using finite element computer programs of GEOSLOPE. The rainfall intensity and duration is considered as one of the studied parameters, three intensity values are selected (10, 24 and 50) mm/day (with different duration 10, 20, 30, 40, 50 and 60) day. Phreatic line level is the second parameter studied, at 2, 4, and 6m from surface. In addition to that, footing width is studied as the third parameter. Consequently, three different widths are selected (1, 2, and 3m). Slope angle is also selected as the fourth parameters; four different angles are selected (31, 45, 63 and 81) degree. As a result, a chart for routine design is obtained.

Downloads

Download data is not yet available.

References

1. Ahmadi, M.H., Asakereh, A., (2015), "Numerical Analysis of the Bearing Capacity of Strip Footing Adjacent to Slope", International Journal of Science and Engineering Investigations. Vol. 4, No. 46, pp. 49-53.
2. Briaud, J.L. and Gibbens, R. (1994), “Predicted and measured behavior of five large spread footings on sand”, in Proc. Prediction Symp. ASCE GSP41.
3. Chen, H., Lee, C.F., Law, K.T., 2004. Causative mechanism of rainfall-induced fill slope failures. Journal of Geotechnical and Geo-environmental Engineering, ASCE, 130, (6), 593–602.





4. Fredlund, D.G., Rahardjo, H., 1993. Soil Mechanics for Unsaturated Soils. ohn Wiley and Sons, Inc., USA
5. Kassim A, Gofar N, Lee M. L, Rahardjo H. (2012). Modeling of suction distributions in an unsaturated heterogeneous residual soil slope. Engineering Geology, 131–132: 70–82.
6. Lee M. L, Kassim A, Gofar N. 2011. Performances of two instrumented laboratory models for the study of rainfall infiltration into unsaturated soils. Engineering Geology, 117, 78–89.
7. Liu, G. R. and Quek, S. S., (2003), "The Finite Element Method", A Practical Course, Department of Mechanical Engineering, National University of Singapore.
8. Lyle, N. R., (2009), "Comprehensive Design Charts for the Footing on Slope Problem", University of Southern Queensland Faculty of Engineering and Surveying, Courses ENG4111 and ENG4112 Research Project.
9. Stormont, J.C., Anderson, C.E., 1999. Capillary barrier effect from underlying coarser soil layer. Journal of Geotechnical and Geo-environmental Engineering, ASCE, 125 (8), 641–648.
10. Travis, Q.B., Houston, S.L., Marinho, F.A.M., Schmeeckle, M., 2010. Unsaturated infinite slope stability considering surface flux. Journal of Geotechnical and Geo-environmental Engineering, ASCE, Vol. 136, No. 7, pp. 963–974.
11. Zou, Z.Y., Young, M.H., Wierenga, P.J., (2001), "Estimation of depth averaged unsaturated soil hydraulic properties from infiltration experiments", Journal of Hydrology, Vol. 242, No. (1–2), pp. 26–42.

Published

2019-11-06

How to Cite

Khattab, S. A. A., Al-Sulaifanie, B. J., & Mohammed, R. A. (2019). Design Chart of a footing located on a Crest of the Unsaturated Soil slopes. Academic Journal of Nawroz University, 8(4), 198–215. https://doi.org/10.25007/ajnu.v8n4a463

Issue

Section

Articles