- Volume 15 Issue 1
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A Study on the Pile Material Suited for Pile Supported Embankment Reinforced by Geosynthetics
토목섬유로 보강된 성토지지말뚝 구조에 적합한 말뚝재료의 개발
Choi, Choong-Lak;Lee, Kwang-Wu;Kim, Eun-Ho;Jung, Ji-Won
- Received : 2016.01.20
- Accepted : 2016.03.18
- Published : 2016.03.30
It is a current trend that the concrete track is applied for high speed railway. In the case of the railway embankment constructed on soft ground, the damage to concrete track which is sensitive to settlement such as distortion and deflection could be caused by very small amount of long term settlement. Pile Supported Embankment method can be considered as the effective method to control the residual settlement of the railway embankment on soft ground. The Geosynthetics is used inside of the embankment to maximize the arching effect transmitting the load of the embankment to the top of the piles. But, PHC piles that are generally used for bridge structures are also applied as the pile supporting the load of embankment concentrated by the effect of the Geosynthetics. That is very low efficiency in respect of pile material. So, in this study, the cast in place concrete pile was selected as the most suitable pile type for supporting the embankment by a case study and the optimum mixing condition of concrete using a by-product of industry was induced by performing the mixing designs and the compressive strength designs. And it is shown that the cast in place pile with the optimum mixing condition using the by-product of industry is 2.8 times more efficient than the PHC pile for the purpose of Pile Supported Embankment by the finite element analysis method.
Soft soil;Pile supported embankment;Pile material;Geo-grid
- Alexiew, D. and Gartung, E. (1999), "Geogrid reinforced railway embankment on piles-performance monitoring 1994-1998." Proc. of Geossinteeticos'99, Rio de Janeiro, Brazil, 403-411.
- Canadian Geotechnical Society (2006), Canadian Foundation Engineering Manual 4th Edition, BiTech Publishers Ltd..
- David (2005), "The Overriding Aspects of the Design of Geosynthetic-Reinforced Pile Supported Embankments." American Society of Civil Engineers.
- Kim, H.-S. and Jin, C.-S. (2000), "Fundamental Properties of Concrets Using Casting Foundry Fly Ash as an Admixture", Journal of Korea Concrete Institute, Vol.12, No.3, pp.87-94.
- Kim, J.-J. (2014), "Field application cases of carbon reduction purposed concrete using industrial by-product", Technical lecture for field application cases of industrial by-product and recycled coarse aggregate, Korean Recycled Construction Resource Institute, pp.41-95.
- Korean Concrete Institute (2012), Structural Concrete Design Code, Ministry of Land, Transport and Maritime Affairs.
- Korean Geotechnical Society (2009), Design criteria of structure foundation, Ministry of Land, Transport and Maritime Affairs.
- Lee, J.-Y., Choi, S.-H., Kang, S.-H. and Lee, K.-M. (1999), "Influence of Fly Ash Content with Respect to the Fresh and Mechanical Properties in Concrete", Journal of Korea Concrete Institute, Vol.11, No.6, pp.25-33.
- Lee, K.-W. (2006), Design method of the geosynthetic-reinforced and pile-supported embankment system to control lateral flow in soft grounds, Ph.D Thesis, University of Chung-Ang.
- Lee, M.-W., Heo, Yol. and Shin, E.-C. (2000), "Effectiveness of Reinforcement by Geogrid & Pile in Soft Clay", Journal of the Korean Society of Civil Engineers, Vol.20, No.5-C, pp.453-460.
- Lin, K.Q. and Wong, I.H. (1999), "Use of deep cement mixing to reduce settlements at bridge approaches." Journal of Geotechnical and Geoenvironmental Engineering, ASCE, 125(4), 309-320. https://doi.org/10.1061/(ASCE)1090-0241(1999)125:4(309)
- Tsukada, Y., Isoda, T., and Yamanouchi, T. (1993), "Geogrid Subgrade Reinforcement and deep foundation Improvement: Yono City, Japan." Proceedings, Geosynthetics Case Histories, International Society for Soil Mechanics and Foundation Engineering, Committee TC9, 158-159.
Supported by : Ministry of Land, Infrastructure and Transport of Korean government