Geomechanics and Engineering

  • 제24권1호
  • /
  • Pages.43-55
  • /
  • 2021
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  • 2005-307X(pISSN)
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  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Consolidation settlement of soil foundations containing organic matters subjected to embankment load

  • Feng, Ruiling (School of Civil Engineering, Beijing Jiaotong University) ;
  • Wang, Liyang (School of Civil Engineering, Beijing Jiaotong University) ;
  • Wei, Kang (School of Civil Engineering, Beijing Jiaotong University) ;
  • Zhao, Jiacheng (School of Civil Engineering, Beijing Jiaotong University)
  • 투고 : 2020.03.19
  • 심사 : 2020.12.22
  • 발행 : 2021.01.10
⟨ 이전 논문 다음 논문 ⟩

초록

Peatland is distributed in China widely, and organic matters in soil frequently induce problems in the construction and maintenance of highway engineering due to the high permeability and compressibility. In this paper, a selected site of Dali-Lijiang expressway was surveyed in China. A numerical model was built to predict the settlement of the foundation of the selected section employing the soft soil creep (SSC) model in PLAXIS 8.2. The model was subsequently verified by the result of field observance. Consequently, the parameters of 17 types of soils from different regions in China with organic contents varying from 1.1-74.9% were assigned to the numerical model to study the settlement characteristics. The calculated results showed that the duration of primary consolidation and proportion of primary settlement in the total settlement decreased with increasing organic content. Two empirical equations, for total consolidation settlement and secondary settlement, were proposed using multiple linear regression based on the calculated results from the numerical models. The analysis results of the significances of certain soil parameters demonstrated that the natural compression index, secondary compression index, cohesion and friction angle have significant linear relevance with both the total settlement and secondary settlement, while the initial coefficient of permeability exerts significant influence on the secondary settlement only.

키워드

과제정보

This work was supported by the National Science Foundation of China (Grant number 51778048).

참고문헌

  1. Acharya, M.P., Hendry, M.T. and Martin, C.D. (2017), "Creep behaviour of intact and remoulded fibrous peat", Acta Geotech., 10(2), 145. http://doi.org/10.1007/s11440-017-0545-1.
  2. Al-Khoury, R. (2002), Plaxis 2D: Version 8, Balkema, Lisse, The Netherlands.
  3. Boulanger, R.W., Arulnathan, R., Harder, L.F., Torres, R.A. and Driller, M.W. (1998), "Dynamic properties of Sherman Island peat", J. Geotech. Geoenviron. Eng., 124(1), 12-20. http://doi.org/10.1061/(ASCE)1090-0241(1998)124:1(12).
  4. Buttling, S., Cao, R., Lau, W. and Naicker, D. (2018), "Class A and Class C numerical predictions of the deformation of an embankment on soft ground", Comput. Geotech., 93, 191-203. http://doi.org/10.1016/j.compgeo.2017.06.017.
  5. Dehghanbanadaki, A., Motamedi, S. and Ahmad, K. (2020), "FEM-based modelling of stabilized fibrous peat by endbearing cement deep mixing columns", Geomech. Eng., 20(1), 75-86. http://doi.org/10.12989/gae.2020.20.1.075.
  6. Feng, R., Wu, L., Shen, Y., Wang, J. and Zhang, L. (2016), "Study on stress distribution rule of meadow soil ground under embankment", Chin. J. Highway Transport, 29(1), 29-35. http://doi.org/10.19721/j.cnki.1001-7372.2016.01.004.
  7. Fox, P.J., Edil, T.B. and Lan, L.T. (1994), "Closure to "Cα/Cc concept applied to compression of peat" by Patrick J. Fox, Tuncer B. Edil, and Li‐Tus Lan (August, 1992, Vol. 118, No. 8)", J. Geotech. Eng., 120(4), 767-770. http://doi.org/10.1061/(ASCE)0733-9410(1994)120:4(767).
  8. GB 50021-2001 (2001), Code for investigation of geotechnical engineering, Ministry of Construction of People's Republic of China; Beijing, China.
  9. GB/T 50123-1999 (1999), Standard for soil test method, Ministry of Construction of People's Republic of China, Beijing, China.
  10. Gong, Y. and Chok, Y.H. (2018), "Predicted and measured behaviour of a test embankment on Ballina clay", Comput. Geotech., 93, 178-190. http://doi.org/10.1016/j.compgeo.2017.06.003.
  11. Gouw, T.L. (2020), "Case histories on the application of vacuum preloading and geosynthetic-reinforced soil structures in Indonesia", Indian Geotech. J., 50(2), 213-237. http://doi.org/10.1007/s40098-019-00391-5.
  12. Gui, Y., Yu, Z., Liu, H., Cao, J. and Wang, Z. (2016), "Experimental study of the change law of consolidation coefficient of the plateau lacustrine peaty soil", Chin. J. Rock Mech. Eng., 35(S1), 3259-3267. http://doi.org/10.13722/j.cnki.jrme.2014.1445.
  13. Huang, J. (1999), "Engineering geological characteristics of peat soils in Qidian along the Nanning-Kunming Railway", Subgrade Eng., (06), 6-12.
  14. Huat, B.B.K., Prasad, A., Asadi, A. and Kazemian, S. (2014), Geotechnics of Organic Soils and Peat, CRC Press/Balkema, Leiden, The Netherlands.
  15. Jiang, Z. (2006), Peat Soils in Dianchi, Southwest Jiaotong University Press, Chengdu, China.
  16. Jorat, M.E., Kreiter, S., Morz, T., Moon, V. and de Lange, W. (2013), "Strength and compressibility characteristics of peat stabilized with sand columns", Geomech. Eng., 5(6), 575-594. http://doi.org/10.12989/gae.2013.5.6.575.
  17. JTG-B01-2014 (2015), Technical Standard of Highway Engineering, Ministry of Transport of the People's Republic of China; Beijing, China.
  18. Kalantari, B. (2011), "Strength evaluation of air cured, cement treated peat with blast furnace slag", Geomech. Eng., 3(3), 207-218. http://doi.org/10.12989/gae.2011.3.3.207.
  19. Kalantari, B. and Rezazade, R.K. (2015), "Compressibility behaviour of peat reinforced with precast stabilized peat columns and FEM analysis", Geomech. Eng., 9(4), 415-426. http://doi.org/10.12989/gae.2015.9.4.415.
  20. Kalantari, B., Prasad, A. and Huat, B.B.K. (2010), "Peat stabilization using cement, polypropylene and steel fibres", Geomech. Eng., 2(4), 321-335. http://doi.org/10.12989/gae.2010.2.4.321.
  21. Karunawardena, A., Oka, F. and Kimoto, S. (2011), "Elasto-viscoplastic modeling of the consolidation of Sri Lankan peaty clay", Geomech. Eng., 3(3), 233-254. http://doi.org/10.12989/gae.2011.3.3.233.
  22. Laloui, L., and Ferrari, A. (2013). Multiphysical Testing of Soils and Shales, Springer, Berlin, Germany, New York, U.S.A.
  23. Li, M. (2006), "Soft soil embankment consolidation settlement characteristics of Jiangmifeng-Huangsongdian first-class highway", M.Sc. Dissertation, Jilin University, Changchun, China.
  24. Liu, F., Er, L., Lv, Y. and Zhang, M. (2010), "Experiment of influence of decomposition degree on structure characteristics and strength of turfy soil", J. Jilin Univ. Earth Sci. Ed., 40(06), 1395-1400. http://doi.org/10.3969/j.issn.1671-5888.2010.06.023.
  25. Liu, Y. (2006), "Research on settlement and deformation characteristics of peat soil roadbed", Ph.D. Dissertation, Jilin University, Changchun, China
  26. Liu, Y. (2014), "Study on the influence of composition and micro structure on the of strength of peat soils in Dianchi", M.Sc. Dissertation, Kunming University of Science and Technology, Kunming, China.
  27. Lv, Y., Er, L., Xu, Y., Liu, F. and Zhang, M. (2011), "The mechanism of organic matter effect on physical and mechanical properties of turfy soil", Chin. J. Geotech. Eng., 33(4), 655-660.
  28. Ma, X. (2013), Carbon Reserves and Emissions of Peatlands in China, China Forestry Press, Beijing, China.
  29. Madaschi, A. and Gajo, A. (2015), "One-dimensional response of peaty soils subjected to a wide range of oedometric conditions", Geotechnique, 65(4), 274-286. http://doi.org/10.1680/geot.14.P.144.
  30. Madaschi, A. and Gajo, A. (2017), "A one-dimensional viscoelastic and viscoplastic constitutive approach to modeling the delayed behavior of clay and organic soils", Acta Geotech., 12(4), 827-847. http://doi.org/10.1007/s11440-016-0518-9.
  31. Mao, W. (2015), "Study on the permeability characteristic of turfy soil and its application in the East of Jilin Province", M.Sc. Dissertation, Jilin University, Changchun, China.
  32. Mesri, G. (2002), "Primary compression and secondary compression", Proceedings of the Symposium on Soil Behavior and Soft Ground Construction Honoring Charles C. "Chuck" Ladd, Cambridge, Massachusetts, U.S.A., October.
  33. Mesri, G. (2013), "Long-term consolidation behavior interpreted with isotache concept for worldwide clays: By Watabe, Y., Udaka, K., Nakatani, Y., Leroueil, S., 2012. Soils and Foundations 52(3), 449-464", Soils Found., 53(2), 357-359. http://doi.org/10.1016/j.sandf.2013.01.002.
  34. Mesri, G. and Ajlouni, M. (2007), "Engineering properties of fibrous peats", J. Geotech, Geoenviron. Eng., 133(7), 850-866. http://doi.org/10.1061/(ASCE)1090-0241(2007)133:7(850).
  35. Mesri, G. and Choi, Y.K. (1985), "Settlement analysis of embankments on soft clays", J. Geotech. Eng., 111(4), 441-464. http://doi.org/10.1061/(ASCE)0733-9410(1985)111:4(441).
  36. Mesri, G., Stark, T.D., Ajlouni, M.A. and Chen, C.S. (1997), "Secondary compression of peat with or without surcharging", J. Geotech. Geoenviron. Eng., 123(5), 411-421. http://doi.org/10.1061/(ASCE)1090-0241(1997)123:5(411).
  37. Mujah, D., Siaw, K.S. and Tasnim, S. (2016), "Numerical modelling of the consolidation behavior of peat soil improved by sand columns", Soil Mech. Found. Eng., 52(6), 317-321. http://doi.org/10.1007/s11204-016-9347-y.
  38. Nguyen, H.S., Tashiro, M., Inagaki, M., Yamada, S. and Noda, T. (2015), "Simulation and evaluation of improvement effects by vertical drains/vacuum consolidation on peat ground under embankment loading based on a macro-element method with water absorption and discharge functions", Soils Found., 55(5), 1044-1057. http://doi.org/10.1016/j.sandf.2015.09.007.
  39. Pronger, J., Schipper, L.A., Hill, R.B., Campbell, D.I. and McLeod, M. (2014), "Subsidence rates of drained agricultural peatlands in New Zealand and the relationship with time since drainage", J. Environ. Qual., 43(4), 1442-1449. http://doi.org/10.2134/jeq2013.12.0505.
  40. Puppala, A.J., Banerjee, A. and Congress, S.S.C. (2020), Geosynthetics in Geo-Infrastructure Applications, in Durability of Composite Systems, Woodhead Publishing, Oxford, U.K.
  41. Rezanezhad, F., Price, J.S., Quinton, W.L., Lennartz, B., Milojevic, T. and van Cappellen, P. (2016), "Structure of peat soils and implications for water storage, flow and solute transport: A review update for geochemists", Chem. Geol., 429, 75-84. http://doi.org/10.1016/j.chemgeo.2016.03.010.
  42. Samson, L. (1985), "Postconstruction settlement of an expressway built on peat by precompression", Can. Geotech. J., 22(3), 308-312. http://doi.org/10.1139/t85-044.
  43. Sridharan, A. and Nagaraj, H.B. (2001), "Compressibility behaviour of remoulded, fine-grained soils and correlation with index properties: Reply", Can. Geotech. J., 38(5), 1154. http://doi.org/10.1139/cgj-38-5-1154.
  44. Sun, X. (2006), "Experimental study on the engineering geological properties of peat soils in Dianchi", M.Sc. Dissertation, Kunming University of Science and Technology, Kunming, China.
  45. Tan, Y. (2008), "Finite element analysis of highway construction in peat bog", Can. Geotech. J., 45(2), 147-160. http://doi.org/10.1139/T07-076.
  46. Tashiro, M., Nguyen, S.H., Inagaki, M., Yamada, S. and Noda, T. (2015), "Simulation of large-scale deformation of ultra-soft peaty ground under test embankment loading and investigation of effective countermeasures against residual settlement and failure", Soils Found., 55(2), 343-358. http://doi.org/10.1016/j.sandf.2015.02.010.
  47. Tyurin, D.A. and Nevzorov, A.L. (2017), "Numerical simulation of long-term peat settlement under the sand embankment", Procedia Eng., 175, 51-56. http://doi.org/10.1016/j.proeng.2017.01.014.
  48. Wang, F. (2013), "Settlement observation of a pedestrian bridge and investigation of underlying west lake peat soil behavior", M.Sc. Dissertation, Zhejiang University, Hangzhou, China.
  49. Wang, Z., Er, L., Lv, Y. and Mao, W. (2017), "Study on effect of organic matter content and decomposition degree of turfy soil on its permeability", Subgrade Eng., (01), 18-21. http://doi.org/10.13379/j.issn.1003-8825.2017.01.04
  50. Wong, L.S. and Somanathan, S. (2019), "Analytical and numerical modelling of one-dimensional consolidation of stabilized peat", Civ. Eng. J., 5(2), 398-411. http://doi.org/10.28991/cej-2019-03091254.
  51. Xiong, E. (2005), "Research on physical properties and relationship between strain and stress of peat & peaty soil in Yunnan", M.Sc. Dissertation, Kunming University of Science and Technology, Kunming, China.
  52. Xu, Y. (2008), "Study on engineering geological properties and settlement of turfy soil in seasonal frozen region", Ph.D. Dissertation, Jilin University, Changchun, China.
  53. Yamada, S., Noda, T., Tashiro, M. and Nguyen, H.S. (2015), "Macro-element method with water absorption and discharge functions for vertical drains", Soils Found., 55(5), 1113-1128. http://doi.org/10.1016/j.sandf.2015.09.012.
  54. Yang, Z.X., Zhao, C.F., Xu, C.J., Wilkinson, S.P., Cai, Y.Q. and Pan, K. (2016), "Modelling the engineering behaviour of fibrous peat formed due to rapid anthropogenic terrestrialization in Hangzhou, China", Eng. Geol., 215, 25-35. http://doi.org/10.1016/j.enggeo.2016.10.009.
  55. Yu, Z. (2015), "Experimental study on consolidation and unloading- Rebound deformation of the plateau Lacustrine peaty soil", M.Sc. Dissertation, Kunming University of Science and Technology, Kunming, China.
  56. Zhang, Y. (2016), "A model test study of the distribution of additional stress and ultimate bearing capacity of meadow soil foundation under embankment", M.Sc. Dissertation, Beijing Jiaotong University, Beijing, China.
  57. Zhao, C. (2014), "Characterization and constitutive modeling of peat and its engineering application", M.Sc. Dissertation, Zhejiang University, Hangzhou, China.