Paper Title:
Explosion and Temperature Resistance of Underground Structures by Free Hexagons
  Abstract

It appears that sudden change of loading such as shock wave impinging on underground structures, which is mostly linked up with an extreme increase of temperature, causes immense disasters, which involve loss of human lives, heavy machine damage, long-lasting traffic troubles, decreasing of bearing capacity of the structural system, etc. A combination of shock wave due to both the elevated temperature accompanying explosion leads to cracking of the bearing system of underground openings, for example to cracking of concrete lining, i.e. to reduction of thickness of the bearing structures, etc. It has been previously proved that the free hexagon method serves for identifying the damage in the bearing system of underground structures very well. The dynamical influences have to be also emerged if extreme raise of temperature and explosion are involved in this problem; formulation is briefly mentioned and the results from numerical simulations are presented. It will be shown that the superheated vapor interacting with shock and temperature waves caused by the point charge inside of the underground open space may cause extensive occurrence of fissures on the surface exposed to the external loading envisaged.

  Info
Periodical
Key Engineering Materials (Volumes 488-489)
Edited by
Z. Tonković and M.H. Aliabadi
Pages
678-681
DOI
10.4028/www.scientific.net/KEM.488-489.678
Citation
P. P. Prochazka, T. S. Lok, "Explosion and Temperature Resistance of Underground Structures by Free Hexagons", Key Engineering Materials, Vols. 488-489, pp. 678-681, 2012
Online since
September 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Petr P. Prochazka, Martin V. Valek, Sarka Peskova
Abstract:Fiber reinforced concrete (FRC) exposed to extremely elevated temperature is of great concern in tunnel structures, for example. In the paper...
693
Authors: Petr P. Prochazka
Abstract:Recently it was shown that the temperature plays very important role in coupling with the impact of shock wave caused by explosion in a free...
185
Authors: Geng Zhi, Wei Yao Bi, Jia Jun Tang, Xue Kun Li, Yi Ming Rong
Chapter 3: Design, Fabrication and Analysis of Devices and Materials for the Applications of Machining Technologies
Abstract:Given that the grain geometry has an important impact on grinding process, it’s necessary to investigate the influence of grain shapes on...
340