Experiment and numerical simulation of explosion compaction in loess

LI Haichao; WEI Lianyu; CHANG Chunwei

doi:10.11883/byzcj-2016-0251

Volume 38 Issue 2

Jan. 2018

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Citation:

LI Haichao, WEI Lianyu, CHANG Chunwei. Experiment and numerical simulation of explosion compaction in loess[J]. Explosion And Shock Waves, 2018, 38(2): 289-294. doi: 10.11883/byzcj-2016-0251

Citation:

LI Haichao, WEI Lianyu, CHANG Chunwei. Experiment and numerical simulation of explosion compaction in loess[J]. Explosion And Shock Waves, 2018, 38(2): 289-294. doi: 10.11883/byzcj-2016-0251

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Experiment and numerical simulation of explosion compaction in loess

doi: 10.11883/byzcj-2016-0251

LI Haichao^{1, 2
,},
WEI Lianyu^{1, 3},
CHANG Chunwei²

1.
School of Civil Engineering and Transportation, Hebei University of Technology, Tianjin 300401, China
2.
National Defense Transportation Department, Army Military Transportation University, Tianjin 300161, China
3.
Civil Engineering Technology Research Center of Hebei Province, Tianjin 300401, China

Received Date: 2016-08-19
Rev Recd Date: 2016-11-16
Publish Date: 2018-03-25

Abstract

Abstract

In this work we at first designed and performed some small-scale explosion compaction (EC) outdoor experiments to study the application of EC technology in loess and to verify the feasibility and reliability of numerical simulation by computer software so that the risk of field experiments of EC on existing highways can be avoided. Then, we established the finite element models using the material parameters and the geometric dimensions of the outdoor experiments. Numerical simulations were carried out using ANSYS/LS-DYNA in combination with the above finite element models. By comparing the numerical simulation results with the measured ones in three aspects: the volume of the explosion cavities, the soil density after EC and the peak compressive stress acting on the soil, the feasibility and reliability of using ANSYS/LS-DYNA to simulate the EC of loess were verified. Moreover, the variation laws in the above three aspects were obtained. Our work can provide reference for numerical simulation of EC according to the conditions and the geometrical dimensions of actual loess subgrade.
- explosion compaction,
- ANSYS/LS-DYNA,
- numerical simulation,
- loess,
- explosion cavity

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References(13)

References

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