Geomechanics and Engineering

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Plastic deformation characteristics of disintegrated carbonaceous mudstone under dynamic loading

  • Qiu, Xiang (Department of Civil Engineering, Changsha University of Science & Technology) ;
  • Yin, Yixiang (Department of Civil Engineering, Changsha University of Science & Technology) ;
  • Jiang, Huangbin (Department of Traffic & Transportation Engineering, Changsha University of Science & Technology) ;
  • Fu, Sini (Department of Civil Engineering, Changsha University of Science & Technology) ;
  • Li, Jinhong (Department of Civil Engineering, Changsha University of Science & Technology)
  • Received : 2021.06.16
  • Accepted : 2022.09.18
  • Published : 2022.10.10
⟨ Previous Next ⟩

Abstract

The excessive settlement and deformation of disintegrated carbonaceous mudstone (DCM) embankments under dynamic loading have long been problems for engineers and technicians. In this work, the characteristics and mechanism of the plastic deformation of DCM under different degrees of compaction, water contents and confining pressures were studied by static triaxial, dynamic triaxial and scanning electron microscopy testing. The research results show that the axial stress increases with increasing confining pressure and degree of compaction and decreases with increasing water content when DCM failure. The axial strain at failure of the DCM decreases with increasing confining pressure and degree of compaction and increases with increasing water content. Under cyclic dynamic stress, the change in the axial stress level of the DCM can be divided into four stages: the stable stage, transition stage, safety reserve stage and unstable stage, respectively. The effects of compaction, water content and confining pressure on the critical axial stress level which means shakedown of the DCM are similar. However, an increase in confining pressure reduces the effects of compaction and water content on the critical axial stress level. The main deformation of DCM is fatigue cracking. Based on the allowable critical axial stress, a method for embankment deformation control was proposed. This method can determine the degree of compaction and fill range of the embankment fill material according to the equilibrium moisture content of the DCM embankment.

Keywords

Acknowledgement

The research described in this paper was financially supported by the National Natural Science Foundation of China (Nos. 52278439, 51908073, 51838001 and 52078066), and the Natural Science Foundation Project of Hunan Provincial Department of Education (21B0317).

References

  1. Batenipour, H., Alfaro, M., Kurz, D. and Graham, J. (2014), "Deformations and ground temperatures at a road embankment in northern Canada", Can. Geotech. J., 51(3), 260-271. http://dx.doi.org/10.12989/gae.2020.20.2.103.
  2. Chen, H.H., Li, L, Li, J.P. and Sun, D.A. (2021), "A generic analytical elastic solution for excavation responses of an arbitrarily-shaped deep opening under biaxial in-situ stresses", Int. J. Geomech., 22(4), 04022023., https://doi.10.1061/(ASCE)GM.1943-5622.0002335.
  3. Cho, H.I., Kim, H.S., Sun, C.G. and Kim, D.S. (2020), "Settlement prediction for footings based on stress history from V S measurements", Geomech. Eng., 20(5), 371-384. https://doi.org/10.12989/gae.2020.20.5.371.
  4. Feng, R., Wang, L., Wei, K. and Zhao, J. (2021), "Consolidation settlement of soil foundations containing organic matters subjected to embankment load", Geomech. Eng., 24(1), 43-55. https://doi.org/10.12989/gae.2021.24.1.043.
  5. Francois, S., Karg, C., Haegeman, W. and Degrande, G. (2010), "A numerical model for foundation settlements due to deformation accumulation in granular soils under repeated small amplitude dynamic loading", Int. J. Numer. Anal. Meth. Geomech., 34(3), 273-296. https://doi.org/10.1002/nag.807.
  6. Fu, H. and Chen, C. (2020), "Effect of nanotalc on the shear strength of disintegrated carbonaceous mudstone", J. Nanosci. Nanotechnol., 20(8), 5049-5054. https://doi.org/10.1166/jnn.2020.18490.
  7. Fu, H., Chen, C., Zha, H., Yuan, D., Gao, Q.F., Zeng, L. and Jia, C. (2021), "Hydrophobic polymeric additives toward a long-term robust carbonaceous mudstone slope", Polym., 13(5), 802. https://doi.org/10.3390/polym13050802.
  8. Gao, Q.F., Dong, H., Huang, R. and Li, Z.F. (2019), "Structural characteristics and hydraulic conductivity of an eluvial-colluvial gravelly soil", Bull. Eng. Geol Environ., 78(7), 5011-5028. https://doi.org/10.1007/s10064-018-01455-1.
  9. Gonzalez, A., Cantero, D. and OBrien, E.J. (2011), "Dynamic increment for shear force due to heavy vehicles crossing a highway bridge", Comput. Struct., 89(23-24), 2261-2272. https://doi.org/10.1016/j.compstruc.2011.08.009.
  10. He, Z.M., Xiang, D. and Liu, Y.X. (2020), "Triaxial creep test and particle flow simulation of coarse-grained soil embankment filler", Front. Earth Sci., 8, 62. https://doi.org/10.3389/feart.2020.000629.
  11. Ilori, A.O. (2016), "Occurrence of shale soils along the Calabar-Itu highway, Southeastern Nigeria and their implication for the subgrade construction", SpringerPlus, 5(1), 1-13. https://doi.org/10.1186/s40064-016-1822-4.
  12. Ishikawa, T., Miura, S. and Sekine, E. (2014), "Simple plastic deformation analysis of ballasted track under repeated moving-wheel loads by cumulative damage model", Transp. Geotech., 1(4), 157-170. https://doi.org/10.1016/j.trgeo.2014.06.006.
  13. Kim, N.Y., Park, D.H., Jung, H.S. and Kim, M.I. (2020), "Deformation characteristics of tunnel bottom after construction under geological conditions of long-term deformation", Geomech. Eng., 21(2), 171-178. https://doi.org/10.12989/gae.2020.21.2.171.
  14. Kim, Y., Dang, M.Q., Do, T.M. and Lee, J.K. (2018), "Soil stabilization by ground bottom ash and red mud", Geomech. Eng., 16(1), 105-112. https://doi.org/10.12989/gae.2018.16.1.105.
  15. Lazorenko, G., Kasprzhitskii, A., Khakiev, Z. and Yavna, V. (2019), "Dynamic behavior and stability of soil foundation in heavy haul railway tracks: A review", Constr. Build. Mater., 205, 111-136. https://doi.org/10.1016/j.conbuildmat.2019.01.184.
  16. Nagrale, P.P. and Patil, A.P. (2017), "Improvement in engineering properties of subgrade soil due to stabilization and its effect on pavement response", Geomech. Eng., 12(2), 257-267. http://doi.org/10.12989/gae.2017.12.2.257.
  17. Petersen, H.I. (1998), "Morphology, formation and palaeo-environmental implications of naturally formed char particles in coals and carbonaceous mudstones", Fuel, 77(11), 1177-1183. https://doi.org/10.1016/S0016-2361(98)00021-0.
  18. Qiu, X., Li, J., Jiang, H., Fu, H. and Yang, S. (2021), "A nonlinear constitutive model for disintegrated carbonaceous mudstone based on logarithmic functions", Adv. Civil Eng., 2021, Article ID 6690169. https://doi.org/10.1155/2021/6690169.
  19. Ren, X.W., Tang, Y.Q., Li, J. and Yang, Q. (2012), "A prediction method using grey model for cumulative plastic deformation under cyclic loads", Nat. Hazard., 64(1), 441-457. https://doi.org/10.1007/s11069-012-0248-8.
  20. Sadisun, I.A., Bandono, B., Shimada, H., Ichinose, M. and Matsui, K. (2010), "Physical disintegration characterization of mudrocks subjected to slaking exposure and immersion tests", Indones. J. Geosci., 5(4), 219-225. https://:doi.org/10.17014/ijog.v5i4.105.
  21. Salour, F. and Erlingsson, S. (2017), "Permanent deformation characteristics of silty sand subgrades from multistage RLT tests", Int. J. Pave. Eng., 18(3), 236-246. https://doi.org/10.1080/10298436.2015.1065991.
  22. Venkatesh, N., Heeralal, M. and Pillai, R.J. (2020), "Resilient and permanent deformation behaviour of clayey subgrade soil subjected to repeated load triaxial tests", Eur. J. Environ. Civil Eng., 24(9), 1414-1429. https://doi.org/10.1080/19648189.2018.1472041.
  23. Wang, J.D., Gu, T.F. and Xu, Y.J. (2017), "Field tests of expansive soil embankment slope deformation under the effect of the rainfall evaporation cycle", Appl. Ecol. Environ. Res., 15(3), 343-357. http://doi.org/10.15666/aeer/1503_343357.
  24. Yang, S.R., Huang, W.H. and Liao, C.C. (2008), "Correlation between resilient modulus and plastic deformation for cohesive subgrade soil under repeated loading", Transp. Res. Record, 2053(1), 72-79. https://doi.org/10.3141/2053-09.
  25. Yu, Y., Wang, Z. and Sun, H. (2020), "Optimal design of stone columns reinforced soft clay foundation considering design robustness", Geomech. Eng., 22(4), 305-318. https://doi.org/10.12989/gae.2020.22.4.305.
  26. Zeng, L., Yu, H.C., Liu, J., Gao, Q.F. and Bian, H.B. (2021), "Mechanical behaviour of disintegrated carbonaceous mudstone under stress and cyclic drying/wetting", Constr. Build. Mater., 282, 122656. https://doi.org/10.1016/j.conbuildmat.2021.122656.
  27. Zhang, J., Peng, J., Zeng, L., Li, J. and Li, F. (2019), "Rapid estimation of resilient modulus of subgrade soils using performance-related soil properties", Int. J. Pave. Eng., 22(6), 732-739. https://doi.org/10.1080/10298436.2019.1643022.