Modeling of Tunnel Concrete Lining under Fire and Explosion Damage

This paper presents studies that focus on fire and explosion-induced damage of tunnel structures by employing the Discrete Element Method (DEM). By assuming a two-dimensional aggregate distribution and reconstructing the digital representation of the experimental concrete blocks, a numerical model o...

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Autores principales:	Zhaopeng Yang, Linbing Wang, Zhifei Gao
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi Limited 2021
Materias:	Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/78095f04ec634c60820b4420235852e8
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spelling	oai:doaj.org-article:78095f04ec634c60820b4420235852e82021-11-22T01:11:19ZModeling of Tunnel Concrete Lining under Fire and Explosion Damage1687-809410.1155/2021/8124972https://doaj.org/article/78095f04ec634c60820b4420235852e82021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/8124972https://doaj.org/toc/1687-8094This paper presents studies that focus on fire and explosion-induced damage of tunnel structures by employing the Discrete Element Method (DEM). By assuming a two-dimensional aggregate distribution and reconstructing the digital representation of the experimental concrete blocks, a numerical model of the tunnel lining concrete was established in the PFC2D program. The temperature distribution and the shock wave pressure at the surface of the tunnel lining were obtained by using Fluent and LS-Dyna separately; the final damage simulation of concrete section under different conditions was carried out in PFC2D. The results showed that PFC2D cooperatively provided more accurate and effective modeling and visualization of impact damage of concrete blocks. The visualizations of damage indicated the degree of damage more clearly and more intuitively. These findings also provide a potential method for further study of the damage assessment for entire tunnel lining structures.Zhaopeng YangLinbing WangZhifei GaoHindawi LimitedarticleEngineering (General). Civil engineering (General)TA1-2040ENAdvances in Civil Engineering, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Engineering (General). Civil engineering (General) TA1-2040 Zhaopeng Yang Linbing Wang Zhifei Gao Modeling of Tunnel Concrete Lining under Fire and Explosion Damage
description	This paper presents studies that focus on fire and explosion-induced damage of tunnel structures by employing the Discrete Element Method (DEM). By assuming a two-dimensional aggregate distribution and reconstructing the digital representation of the experimental concrete blocks, a numerical model of the tunnel lining concrete was established in the PFC2D program. The temperature distribution and the shock wave pressure at the surface of the tunnel lining were obtained by using Fluent and LS-Dyna separately; the final damage simulation of concrete section under different conditions was carried out in PFC2D. The results showed that PFC2D cooperatively provided more accurate and effective modeling and visualization of impact damage of concrete blocks. The visualizations of damage indicated the degree of damage more clearly and more intuitively. These findings also provide a potential method for further study of the damage assessment for entire tunnel lining structures.
format	article
author	Zhaopeng Yang Linbing Wang Zhifei Gao
author_facet	Zhaopeng Yang Linbing Wang Zhifei Gao
author_sort	Zhaopeng Yang
title	Modeling of Tunnel Concrete Lining under Fire and Explosion Damage
title_short	Modeling of Tunnel Concrete Lining under Fire and Explosion Damage
title_full	Modeling of Tunnel Concrete Lining under Fire and Explosion Damage
title_fullStr	Modeling of Tunnel Concrete Lining under Fire and Explosion Damage
title_full_unstemmed	Modeling of Tunnel Concrete Lining under Fire and Explosion Damage
title_sort	modeling of tunnel concrete lining under fire and explosion damage
publisher	Hindawi Limited
publishDate	2021
url	https://doaj.org/article/78095f04ec634c60820b4420235852e8
work_keys_str_mv	AT zhaopengyang modelingoftunnelconcreteliningunderfireandexplosiondamage AT linbingwang modelingoftunnelconcreteliningunderfireandexplosiondamage AT zhifeigao modelingoftunnelconcreteliningunderfireandexplosiondamage
_version_	1718418288583639040

Modeling of Tunnel Concrete Lining under Fire and Explosion Damage

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