Experience with Recent Soil Nail Construction in California
Publication: Geo-Congress 2024
ABSTRACT
This paper presents a case history on the design, construction, and performance of soil nail walls for the addition of express lanes along the I-405 freeway corridor in southern California. The walls were constructed to support vertical cuts into existing “old” embankment fills. Federal Highway Administration GEC 007 recommends ultimate bond strength values of 21−41 kPa for augured nails in silty sand fill. Ultimate bond strength values of 93−145 kPa were selected for design based on local experience, literature review, and engineering judgement. Back-calculated ultimate bond strength values from field pull-out tests were about 30 to greater than 145 kPa. The objective of the paper is to validate the original design with actual pull-out tests. It is concluded that the GEC 007 ultimate bond strength values for fill may be conservative, and higher values can be justified in old embankment highway fills in southern California.
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REFERENCES
AASHTO. (2012). LRFD Bridge Design Specifications, 6th Edition.
Caltrans. (2012). Fault Database, Version 2b, December 13.
Caltrans. (2014). Bridge Standard Details, July.
Caltrans. (2015a). Standard Specifications.
Caltrans. (2015b). Foundation Report Preparation for Earth Retaining Systems.
Caltrans. (2017a). Geotechnical Manual, Soil Nail Walls.
Caltrans. (2017b). ARS Online Tool. Version 2.3.09.
Caltrans. (2018). SNAIL User Manual.
FHWA (Federal Highway Administration). (2015). Soil Nail Walls Reference Manual., February.
GEO5 User Guide. (2022). https://download.fine.cz/manuals/geo_2022_userguide_en.pdf.
Geotechnical Engineering Office. (2005). Good practice in design of steel soil nails for soil cut slopes.
Gurpersaud, N., Vanapalli, S. K., and Sivathayalan, S. (2013). Semiempirical Method for Estimation of Pullout Capacity of Grouted Soil Nails in Saturated and Unsaturated Soil Environments, J. Geotech. Engrg. Div., 139(11), 1934–1943.
Kulhawy, F. H., and Mayne, P. W. (1990). Manual on estimating soil properties for foundation design. Electric Power Research Inst., Palo Alto, CA (USA); Cornell Univ., Ithaca, NY (USA). Geotechnical Engineering Group.
Li, J., Tham, L. G., Junaideen, S. M., Yue, Z. Q., and Lee, C. F. (2008). Loose Fill Slope Stabilization with Soil Nails: Full-Scale Test. J. Geotech. Engrg. Div., 134(3), 277–288.
Seo, H. J., Jeong, K. H., Choi, H., and Lee, I. M. (2012). Pullout resistance increase of soil nailing induced by pressurized grouting. J. Geotech. and Geoenviron. Engrg, 138(5), 604–613.
Slide2 Documentation. https://www.rocscience.com/help/slide2/documentation.
Su, L. J., Chan, T. C., Yin, J. H., Shiu, Y. K., and Chiu, S. L. (2008). Influence of overburden pressure on soil–nail pullout resistance in a compacted fill. J. Geotec. and Geoenviron. Engrg, 134(9), 1339–1347.
Yin, J. H., and Zhou, W. H. (2009). Influence of Grouting Pressure and Overburden Stress on the Interface Resistance of a Soil Nail. J. Geotech. Engrg. Div., 135(9), 1198–1208.
Zhang, L. L., Zhang, L. M., and Tang, W. H. (2009). Uncertainties of field pullout resistance of soil nails. J. Geotech. and Geoenviron. Engrg, 135(7), 966–972.
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Geo-Congress 2024
Pages: 315 - 330
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Published online: Feb 22, 2024
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