Finite Element Analysis of Gas Leakage Diffusion and Dynamic Response of Explosion Structure in Underground Pipe Gallery Under Different Ventilation Modes

DOI

10.2991/978-94-6463-473-0_18How to use a DOI?

Keywords

Underground utility tunnels; gas tank; gas leakage diffusion; gas explosion; dynamic response; Upwind and downwind areas

Abstract

With the acceleration of urbanization and the expansion of city scale, the number of super-large and megacities has increased, which has led to a new round of upsurge in the construction of underground comprehensive pipe gallery projects. In this context, the safety of gas tanks has become the focus of the design, monitoring and maintenance of pipeline corridors. This article establishes a single-chamber model of a gas tank according to the specifications, obtains the diffusion range of the explosive gas cloud through ANSYS/FLUENT, and then uses ANSYS/LS-DYNA to establish the explosion source to analyze the dynamic response of the underground pipe gallery structure. It combines new simulation ideas of diffusion and explosion to study different ventilation The displacement force response and stress distribution of the gas tank structure under the model are used to make up for the limitations of experimental research methods such as safety risks and difficulties in reproducing working conditions. The calculation results show that the corner stress of the gas tank is the largest. Increasing the ventilation frequency of the gas tank can significantly reduce structural damage, especially for structures located in the upwind area.

Copyright

© 2024 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Download article (PDF)

TY  - CONF
AU  - Quanguo Han
AU  - Jun Dong
AU  - Guohua Li
PY  - 2024
DA  - 2024/08/22
TI  - Finite Element Analysis of Gas Leakage Diffusion and Dynamic Response of Explosion Structure in Underground Pipe Gallery Under Different Ventilation Modes
BT  - Proceedings of the 2024 3rd International Conference on Applied Mechanics and Engineering Structures (AMES 2024)
PB  - Atlantis Press
SP  - 170
EP  - 181
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-473-0_18
DO  - 10.2991/978-94-6463-473-0_18
ID  - Han2024
ER  -