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Resistance of the Defense Structure of an Aircraft Hangar to Emergency Impacts

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Abstract:

The article is devoted to the analysis of the operational suitability of the aircraft shelter structure under the action of an explosion, taking into account the nature of their spread through the soil backfills. The intensity of the decrease in the bearing capacity of the covering structure, which depends on the content of reinforcement in the structural element, is considered. Including, preventive measures are proposed for the progressive collapse of the hangar roof slabs in the event of a possible missile hit. The article considers various scenarios of explosive effects, under which the worst-case conditions for ensuring the reliability of the hangar structure during emergency effects were checked. Wave propagation during a ground explosion was analyzed. An example of calculating the arched hangar structure for a blast wave in the LIRA-FEM PC under the action of a surface explosive effect is provided. The results of the nonlinear calculation of the arch and the roofing slabs with an additional impact load of up to 20 tf/m2 are presented. The modeling of the nonlinear loading process was carried out taking into account the damping of the soil base of up to 10% on an area of up to 80 m2 with a dynamic coefficient of 1.2 in the PC LIRA-FEM, the calculation of the emergency load was performed with the specified TR (type of reinforcement).

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Periodical:

Advances in Science and Technology (Volume 170)

Pages:

81-88

DOI:

https://doi.org/10.4028/p-4FCQjJ

Citation:

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Online since:

November 2025

Authors:

Mariia Barabash*, Nataliia Kostyra, Valeriy Maksymenko, Illia Barmin

Keywords:

Crack Resistance, Critical Loads, Defense Structure, Emergency Explosive Impact, Finite Element Method, LIRA-FEM, Nonlinear Calculation, Progressive Collapse, Shell Structures, Stability

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© 2025 Trans Tech Publications Ltd. All Rights Reserved

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* - Corresponding Author

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