The effect of explosions in road tunnels on critical structural elements

In the present paper, the walls of a concrete frame used for over-decking in a road tunnel were first designed using the relevant design provisions. The response of the wall was then analysed using non-linear finite element analysis, and the results of the finite element analysis were compared to wh...

Celý popis

Uloženo v:
Podrobná bibliografie
Vydáno v:Expanding Underground - Knowledge and Passion to Make a Positive Impact on the World s. 3263 - 3271
Hlavní autoři: Peterson, V., Lozano, F., Johansson, M., Hallgren, M., Ansell, A., Magnusson, J.
Médium: Kapitola
Jazyk:angličtina
Vydáno: United Kingdom CRC Press 2023
Taylor & Francis Group
Vydání:1
Témata:
Finite Element Analysis Software Abaqus
Swedish Transport Administration
Vapour Cloud
Geological Strength Index
Monitor Points
Impulse Intensity
Overburden
Membrane Forces
Design Provisions
Frame Model
Vertical DOF
Vertical Restraints
Accidental Loads
Above Ground
FEA Model
Relative Turbulent Intensity
BIM Model
SDOF Model
Tunnel Configuration
Shear Reinforcement
Blast Loads
Road Tunnels
Wave Propagation Velocity
SEM
SCL
On-line přístup:Získat plný text
Tagy: Přidat tag
Žádné tagy, Buďte první, kdo vytvoří štítek k tomuto záznamu!
Popis
Shrnutí:In the present paper, the walls of a concrete frame used for over-decking in a road tunnel were first designed using the relevant design provisions. The response of the wall was then analysed using non-linear finite element analysis, and the results of the finite element analysis were compared to what was predicted using the design guidelines. Additionally, simulations of the blast load resulting from gas leakage during transportation were conducted as a separate study. The results from two vapour clouds containing gases of hydrogen and propane were compared. The response of the wall was analysed using non-linear finite element analysis, and the results of the finite element analysis were compared to what was predicted using the design guidelines. Transport on roads of combustible substances such as liquefied petroleum gas (LPG) or hydrogen is common, and the possible accidental explosion of such substances has had detrimental consequences, as reported by Strehlow. The simulations of the response using Abaqus and of the gas explosions using FLACS-CFD were conducted as two separate studies on the same tunnel configuration. The design provision showed a need for shear reinforcement, but the finite element analyses showed a negligible effect of it. The gas explosion analysis of a hydrogen cloud showed a higher average flame speed and larger maximum overpressure levels when compared to the analysis containing propane.
DOI:10.1201/9781003348030-395