The static performance of a three-pylon cable-stayed bridge under different fire scenarios

Bridges are important parts of traffic systems and need to provide the necessary safety for the traveling public. Fire is one of the most severe hazards that bridges may subject to during their lifetime. In recent years, due to rapid development of transportation systems, as well as increasing transport of hazardous materials, bridge fires have become a concern. Bridge fires caused by crashing of vehicles and burning of gasoline are much more severe than building fires and are characterized by a fast heating rate and a higher peak temperature which could lead to bridge collapse. Bridge failures during a fire can result in the disruption of commerce and services, and most importantly the loss of human life. It has become necessary to consider the potential exposure of bridges to flames from oil or liquefied petroleum gas fires. In this paper, potential fire scenarios relevant for a cable-stayed bridge crossing the Yangtze River are analyzed firstly, then the temperature distribution in key elements and the global structural behavior of the bridge under tanker truck fires is calculated by using general purpose finite element analysis software ANSYS. Numerical simulation results demonstrate that cable-stayed bridge may collapse under some specific fire scenarios and it is necessary to consider fire safety in bridge design.

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Static Performance of a Long-Span Concrete Cable-Stayed Bridge Subjected to Multiple-Cable Loss during Construction

Journal of Bridge Engineering ◽

10.1061/(asce)be.1943-5592.0001529 ◽

2020 ◽

Vol 25 (3) ◽

pp. 04020002 ◽

Cited By ~ 4

Author(s):

Yu Zhang ◽

Zhi Fang ◽

Ruinian Jiang ◽

Yu Xiang ◽

Haibin Long ◽

...

Keyword(s):

Cable Stayed Bridge ◽

Long Span ◽

Static Performance

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Evaluation of the Impact of Potential Fire Scenarios on Structural Elements of a Cable-Stayed Bridge

Journal of Fire Protection Engineering ◽

10.1177/1042391508095091 ◽

2009 ◽

Vol 19 (2) ◽

pp. 85-106 ◽

Cited By ~ 27

Author(s):

I. Bennetts ◽

K. Moinuddin

Keyword(s):

Structural Elements ◽

Cable Stayed Bridge ◽

Fire Scenarios ◽

The Impact

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Analysis on the Impact of the Backstays Forms on the Performance of Inclined Tower Cable-Stayed Bridge

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.533.127 ◽

2014 ◽

Vol 533 ◽

pp. 127-134

Author(s):

Bo Lei ◽

Ying Zhao Lv ◽

Wei Ren

Keyword(s):

Mechanical Property ◽

Dynamic Property ◽

Bending Moment ◽

Contrastive Analysis ◽

Visual Effect ◽

Cable Stayed Bridge ◽

Cable Force ◽

Static Performance ◽

The Difference ◽

The Impact

In order to study the differences between spaces twisted backstay inclined tower cable-stayed bridge and conventionally cable-arranged cable-stayed bridge in mechanical property, this paper, taking a single-stay inclined tower space twisted backstays cable-stayed bridge as the study project, adopting FEM by changing the form of the backstays, makes a contrastive analysis on the difference between space twisted backstays cable arrangement (TBCA) and fan-shaped backstays cable arrangement (FBCA) in such aspects as static performance, dynamic property and stability. Some conclusions are concluded: the TBCA is easy to cause such problems as uneven distributed cable force, larger girders bending moment and stress; the integral rigidity of TBCA is less than that of FBCA; in stability, these two differ little, etc. As far as the overall comparison is concerned, TBCA is basically rational from the point of stress. However, while obtaining a certain visual effect, its mechanical property decreases somewhat.

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