Lateral influence rules on explosion-compacted loess embankment by linear explosive bars

WEI Lianyu; LI Haichao; LIU Yanzhu

doi:10.11883/bzycj-2016-0298

Volume 38 Issue 1

Nov. 2017

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Article Navigation > Explosion And Shock Waves > 2018 > 38(1): 233-240

WEI Lianyu, LI Haichao, LIU Yanzhu. Lateral influence rules on explosion-compacted loess embankment by linear explosive bars[J]. Explosion And Shock Waves, 2018, 38(1): 233-240. doi: 10.11883/bzycj-2016-0298

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WEI Lianyu, LI Haichao, LIU Yanzhu. Lateral influence rules on explosion-compacted loess embankment by linear explosive bars[J]. Explosion And Shock Waves, 2018, 38(1): 233-240. doi: 10.11883/bzycj-2016-0298

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Lateral influence rules on explosion-compacted loess embankment by linear explosive bars

doi: 10.11883/bzycj-2016-0298

WEI Lianyu^{1, 2},
LI Haichao^{1, 3
,
,},
LIU Yanzhu⁴

1.
School of Civil Engineering and Transportation, Hebei University of Technology, Tianjin 300401, China
2.
Civil Engineering Technology Research Center, Hebei Province, Tianjin 300401, China
3.
National Defense Transportation Department, Military Transportation University, Tianjin 300161, China
4.
Road Maintenance and Management Center, Tianjin, Tianjin 300350, China

Received Date: 2016-09-28
Rev Recd Date: 2016-12-19
Publish Date: 2018-01-25

Abstract

Abstract

In order to rationally design the plane layout scheme of drilling holes for explosion compacting the loess embankment of an existing highway, this paper took the loess embankment of a highway reinforced by explosion compaction(EC) as an example and studied the lateral influence rules on EC with linear explosive bar. Firstly, a finite element model was established according to the actual geometry and material parameters of the highway. Then, based on the numerical simulation of sixteen cases carried out by ANSYS/LS-DYNA, the change rules of the horizontal radius of the explosion cavity, the peak values of soil density and their position, the lateral influence radius of explosion compacting loess embankment were obtained. These sixteen cases belong to two kinds of situations. One kind is of explosive bars with equal cross section and unequal length, while another one is of those with equal length and unequal cross section. Moreover, the relationship functions among the increment of soil density after EC with the explosive bar whose cross section was composed of two explosive tubes, the horizontal distance to the core of the explosive bar and the amount of explosive were fitted. Finally, combined with the actual EC engineering of the highway, the application of the above rules in the design of construction scheme was illustrated.
- road engineering,
- explosion compaction,
- linear explosive bar,
- loess embankment,
- lateral influence

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References

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