Actions of Derailed Train on Structures in Eurocode：Impact Mechanism and Design Strategy

In order to study the impact mechanism and design method for a derailed train impacting against adjacent structures that are applicable to Chinese high-speed train, the UK Railway Group Standards GC/RT5112 and International Union of Railways leaflet UIC777-2R are analyzed, which are the basis to develop the Eurocode EN1991-1-7 in terms of the impact from the derailed train against the nearby structures, including the danger zone on both sides of the track, impact loads, preventive measures, etc. Then, the design strategy of accidental loads in Eurocode EN1991-1-7 is introduced; the main research achivements that have important influence on Eurcode about the impact mechanism from the derailed train against structures are reviewed. The results show that the research methods and design strategies of the Eurocode about the impact of a derailed train on adjacent structures are worth learning, but Chinese railways are different from European ones in aspects of structural features of high-speed rail stations, running speed, production methods of railroad track bed, train marshalling, etc., it is necessary to study the impact problems from derailed train against structures according to Chinese situations.