Experimental and numerical study on fire development process and fire risk assessment of historic timber lounge bridges DOI Creative Commons

Zhekui Cui,

Qing Chun

Heritage Science, Journal Year: 2024, Volume and Issue: 12(1)

Published: Nov. 18, 2024

Abstract Historic timber lounge bridges are precious architectural heritages. But they sensitive to fire. In order obtain an adequate understanding of the fire vulnerability historical for their better conservation, this paper proposes a framework based on experiment and computational fluid dynamics (CFD) analysis. Dengyun Bridge, typical bridge with cantilever beams, was chosen carry out study development process risk assessment. Firstly, structural form loads were obtained by conducting on-site survey, then complex pyrolysis model ancient wood established in Fire Dynamic Simulator (FDS) according characteristic replaced from during its renovation. Secondly, Bridge simulated four crucial events defined. Finally, comprehensive index under those calculated applying Analytic hierarchy (AHP) Entropy method, some mitigation prevention strategies discussed accordingly. The results indicated that flashover point boundary development. After flashover, increased reached peak value rapidly. 1084 s (peak heat release rate), about 1.7 times 847 (flashover point). Mitigation strategies, such as flame-retardant treatment water-mist extinguishing system, proved be effective retard developed can provide scientific basis assessment conservation inherited bridges.

Language: Английский

ZnS Photonic Nanocrystals Dip-Coated on PDA-Coated Aluminum Sheets for Color-Based Temperature Sensing DOI

Qingwen Shi,

Hongxi Liu, Tao Peng

et al.

ACS Applied Nano Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 5, 2025

Language: Английский

Citations

0
Study on preparation and fire-resistant property of an organic silicone coating with compounding glass powder DOI
Jiaqing Zhang, Yi Guo,

Lingxin He

et al.

Journal of Coatings Technology and Research, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 24, 2025

Language: Английский

Citations

0
Development of Wood-Based functional composites for advanced sensing and energy conversion applications DOI
Sijia Sun, Yuting Zhang, Chaozheng Liu

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 497, P. 154853 - 154853

Published: Aug. 14, 2024

Language: Английский

Citations

2
Fabrication of Thermochromic Photonic Crystal Stickers with Highly Sensitive Response for Non-open Fire Sensing DOI

Aqing Tian,

Chen Pan,

Mingxiong Wu

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 22, 2024

Giving Timely warnings for fire is very crucial prevention and the protection of people's lives property. However, most current warning sensors give above 200 °C, which are not conducive to efficient accurate warnings. Therefore, it important develop high-temperature that can timely, portable at low temperatures (100 °C). Herein, simple nonopen flame thermochromic photonic crystal (PC) stickers were constructed using ZnS nanoparticles polyethylene (PE) films as main components. The structural color PC changed due chain motion PE chain, changement refractive index materials when heating. Thus, an early sensor (EFWS) was designed based on change stickers. EFWS timely visible sensing in 0.8 s 115 °C. be combined with indoor surveillance cameras key place monitoring (e.g., electrical equipment) households, aircraft, appliances, substations, etc.

Language: Английский

Citations

1
Experimental and numerical study on fire development process and fire risk assessment of historic timber lounge bridges DOI Creative Commons

Zhekui Cui,

Qing Chun

Heritage Science, Journal Year: 2024, Volume and Issue: 12(1)

Published: Nov. 18, 2024

Abstract Historic timber lounge bridges are precious architectural heritages. But they sensitive to fire. In order obtain an adequate understanding of the fire vulnerability historical for their better conservation, this paper proposes a framework based on experiment and computational fluid dynamics (CFD) analysis. Dengyun Bridge, typical bridge with cantilever beams, was chosen carry out study development process risk assessment. Firstly, structural form loads were obtained by conducting on-site survey, then complex pyrolysis model ancient wood established in Fire Dynamic Simulator (FDS) according characteristic replaced from during its renovation. Secondly, Bridge simulated four crucial events defined. Finally, comprehensive index under those calculated applying Analytic hierarchy (AHP) Entropy method, some mitigation prevention strategies discussed accordingly. The results indicated that flashover point boundary development. After flashover, increased reached peak value rapidly. 1084 s (peak heat release rate), about 1.7 times 847 (flashover point). Mitigation strategies, such as flame-retardant treatment water-mist extinguishing system, proved be effective retard developed can provide scientific basis assessment conservation inherited bridges.

Language: Английский

Citations

0