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The Research on Treating Collapsible Loess by Down Whole Deep Compaction and Cement Fly-ash Gravel

Authors

  • Tao Xue Email The Fifth Engineering Co., Ltd. of CCCC Tunnel Engineering Co., Ltd
  • Shang Gao The Fifth Engineering Co., Ltd. of CCCC Tunnel Engineering Co., Ltd

DOI:

https://doi.org/10.30564/frae.v2i1.485
Received: 15 January 2019 | Published Online: 27 March 2019

Abstract

The treatment of loess foundation is always diffcult. The analysis of its advantages and mechanism of treating loess foundation by CFG, on the base of project geology, through construction example, we suggest the compound plan by both DDC and CFG. The tests illustrates that the down hole deep compaction and cement-fly ash-gravel are effective foundation treatment method to eliminate the collapsibility of loess, increase the bearing capacity and improve the behavior of composite foundations.

Keywords:

Down hole deep compaction, Cement fly ash-gravel, , Collapsible loess, Bearing capacity

References

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[2] YAN Han-sheng CAO Sen-hu HAN Mao-wei, Mechanism analyses of disposal of collapsed loess with CFG pile [J].Journal of Xi’an University of Architecture & Technology (Natural Science Edition), 2008,40(2). (in Chinese)

[3] JGJ94-94, Criterion of Construction pile foundation[S].Beijing: China Architecture and Building Press, 1995. (in Chinese)

[4] Q/TY06-1997, Technology specification of cement-fly ash gravel pile and CFG pile composite foundation[S]. (in Chinese)

[5] Kyle M. Rolins Ji-Hyoung Kim, U.S. Experience with dynamic compaction of collapsible soils[J]. Journal of Geotechnical and Geo-environmental Engineering, 1998(8):699-707.

[6] YAN Ming li. Technology of foundation treatment[M]. Beijing: China Environmental Science Press, 1993. (in Chinese)

[7] N. Makris. Soils-pile interaction during the passage of Rayleigh waves: an analytical solution[J]. Earthquake engineering and Structure dynamics, 1994, 23(2): 647-664.

[8] Novak, M., Sharnouby, B. EI., Stiffness Constant of Single Piles[J]. Journal of Geotechnical Engineering, 1983, 109(7):961-974.

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Issue

2019 Vol.2 No.1

Article Type

Article

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Copyright © 2019 Tao Xue, Shang Gao

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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.