火灾对桥梁承载能力的影响研究

Research on the Influence of Fire on the Bearing Capacity of Bridge

随着近年来高速公路里程的迅速增长,发生在高速公路上的火灾数量也居高不下.当火灾发生在桥梁结构上或者其附近时必然会对桥梁结构承载能力产生一定影响,如何判断火灾对桥梁承载能力的影响程度成为高速公路桥梁养护关注的焦点.论文以某高速公路跨线桥在火灾后承载能力的评定为依据,提出了火灾后桥梁承载能力判定的相关方法,可为火灾对桥梁承载能力的影响的评定提供参考.

With the rapid growth of highway mileage in recent years, the number of fires that occur on highways has remained ialgil. When the fire occurs on or near the bridge structure, it will inevitably have a certain impact on the beating capacity of the bridge structure. How to judge the impact of fire on the bearing capacity of the bridge has become the focus of highway bridge maintenance. Based on the evaluation of the bearing capacity of a highway flyover bridge after fire, this paper puts forward the relevant methods to determine the bearing capacity of the bridge after a fire, which can provide reference for the impact o ffire on the bearing capacity of the bridge.