Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)
- 2008.10a
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- Pages.1614-1622
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- 2008
Effects of Multi-Pressurised Soil Nails in the Underground Excavation
가압식 쏘일네일링의 지반 굴착면 보강효과
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Cho, Jae-Yeon
(Dept. of Civil Engineering, Yonsei University)
;
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Lee, Cheol-Ju
(Dept. of Civil Engineering, Kangwon University)
;
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Jeong, Sang-Seom
(Dept. of Civil Engineering, Yonsei University)
- Published : 2008.10.10
Abstract
A series of three-dimensional numerical modelling have been conducted to clarify the behaviour of multi-pressurised soil nails with high strength steel pipes. In this study, the soil non-linearity, the soil-nail interaction and staged construction are considered. It has been found that pressurised soil nails can reduce lateral ground movement by 14-21% compared to general soil nails with very low pressure. In addition, ground settlement was reduced when using multi-pressurised soil nails. The pressurised soil nail may result in an increase in the surcharge loading on the ground surface.