Numerical Analysis of Fluid-Structure Interaction of Fire Doors in Cross-Passages of Subway Tunnels

Autor:	Yong-hang Sun, Kai Wei, Gui-xin Han, Yu Wang, Zhong Luo
Rok vydání:	2021
Předmět:	business.industry Airflow Fire door Structural engineering Deformation (meteorology) Computational fluid dynamics Finite element method law.invention Piston law Fluid–structure interaction Image warping business Geology
Zdroj:	Journal of Vibration Testing and System Dynamics. 5:19-32
ISSN:	2475-482X 2475-4811
Popis:	This study is concerned with the dynamic response of fire doors in cross-passages of subway tunnels. Fire doors in cross-passages of subway tunnels are prone to failure due to the piston effect. First, a full-size model of a section of tunnel in Shenyang Metro was established. Then, computational fluid dynamics (CFD) was used to simulate unsteady airflow under different train speeds. Pressure on the surface of the fire door was obtained and the pressure was set as the excitation on the finite element model of the fire door. Finally, the structural response of the fire door was obtained through explicit dynamics analysis. Maximum stress on the fire door structure was found to be 10.05 MPa. Consistent results were obtained with the actual failure warping deformation, it can be considered that the piston wind is the main factor leading to the warping deformation of the fire door. The findings provide guidance for the installation and maintenance of fire doors in metro tunnels.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::39f9e5927b76a98d38f9fef81dd7bd94 https://doi.org/10.5890/jvtsd.2021.03.002 Zobrazit plný text záznamu