Study on Thermal and Structural Behavior of a Cable-Stayed Bridge under Potential Tanker Truck Fires
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.
cable-stayed bridge tanker truck fire fire resistant time numerical simulation
Yongjun Liu Bo Ning Yu Wang
School of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, China
国际会议
郑州
英文
684-688
2012-09-22（万方平台首次上网日期，不代表论文的发表时间）