Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Stability assessment of a suspension bridge considering the tanker fire nearby steel-pylon
Abstract This paper presents an approach for investigating the stability performance of a three-pylons suspension bridge considering the tanker fire nearby middle steel-pylon. The proposed approach comprises of two steps, named as heat-transfer analysis and structural stability analysis. The first step involves the definition and simulation of fire scenarios, and the heat-transfer process from flame to the middle-pylon. The second step involves the stability performance under different fire scenarios, and the parametric study of burning time, fire area and fire location. Results show that the current fire temperature curves without considering height effects would strongly overestimate the influence of tanker fire. The stability coefficient drops significantly after 30 min and strongly dependent on the fire size and the burning location. The approach and the conclusions are of important value in the safety assessment, management, and maintenance of cable-supported bridges with steel pylons.
Highlights Damage of the middle steel pylon under a typical tanker fire is clarified. The structural stability under different fire scenarios is analyzed and compared. The impact of burning time, fire size and fire location on structural stability is quantified.
Stability assessment of a suspension bridge considering the tanker fire nearby steel-pylon
Abstract This paper presents an approach for investigating the stability performance of a three-pylons suspension bridge considering the tanker fire nearby middle steel-pylon. The proposed approach comprises of two steps, named as heat-transfer analysis and structural stability analysis. The first step involves the definition and simulation of fire scenarios, and the heat-transfer process from flame to the middle-pylon. The second step involves the stability performance under different fire scenarios, and the parametric study of burning time, fire area and fire location. Results show that the current fire temperature curves without considering height effects would strongly overestimate the influence of tanker fire. The stability coefficient drops significantly after 30 min and strongly dependent on the fire size and the burning location. The approach and the conclusions are of important value in the safety assessment, management, and maintenance of cable-supported bridges with steel pylons.
Highlights Damage of the middle steel pylon under a typical tanker fire is clarified. The structural stability under different fire scenarios is analyzed and compared. The impact of burning time, fire size and fire location on structural stability is quantified.
Stability assessment of a suspension bridge considering the tanker fire nearby steel-pylon
Cui, Chuanjie (Autor:in) / Chen, Airong (Autor:in) / Ma, Rujin (Autor:in)
29.05.2020
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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