Research on Surface Overpressure and Deformation of Underground Frame Beam under Internal Blast Loads

Tian Li; Qiao Ying Jiang

doi:10.4028/www.scientific.net/AMR.790.391

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 790Research on Surface Overpressure and Deformation...

Research on Surface Overpressure and Deformation of Underground Frame Beam under Internal Blast Loads

Abstract:

The finite element model of a separately built one-storey underground frame was set up with software ANSYS/LS-DYNA and numerical simulation was done to study on surface overpressure and deformation of the underground frame beam under internal blast loads. It is found that the overpressure peak values on the beam end and middle surface are both much higher when the explosive is below the middle of beam and the peak on the middle surface goes up with the increment of explosive height while that on the beam end surface is not sensitive to the height. The numerical result also indicates that the soil around the frame nearly has no effect on surface overpressure of the frame beam. However, whether there is soil or not the beam deformation has much difference and the increment of the deformation is closely all the same for different soil thicknesses but under the circumstance of thicker soil the beam obtains less deformation upward in a short time after explosion.

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Periodical:

Advanced Materials Research (Volume 790)

Pages:

391-395

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.790.391

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Online since:

September 2013

Authors:

Tian Li, Qiao Ying Jiang

Keywords:

Beam, Deformation, Height of Explosive, Internal Blast Loads, Soil Around, Surface Overpressure, Underground Frame

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