Xinzheng Lu~*,Tsinghua University,China Yansheng Zhang,Tsinghua University,China Jian-jing Jiang,Tsinghua University,China Aizhu Ren~1,Tsinghua University,China Jing Ning,Beijing Municipal Computing Center,Beijing,China
<正>According to statistic data supplied by relative departments,about half of the bridge-superstructures in Beijing have been impacted by over-high trucks.And over 20%of the bridge-superstructure failures in Beijing are due to over-high trucks' impact.Hence it is an important problem that needs to be studied for the safety of the traffic system.Current researches on the impacts between vehicles and structures are mostly focused on ship-bridge pier,car-bridge pier and car-barrier impact.The works on the impact between over-high truck and bridge-superstructure is lacked. This paper presents the nonlinear finite element(FE) simulation for the impact between over-high truck and bridge-superstructure.Besides the nonlinearity of geometry,material and contact,a more accurate reinforced concrete model with FE package of MSC.MARC is adopted in the FE model to give a more realistic simulation for the bridge girders.The whole impact process is simulated and the damages in truck and bridge-superstructures are discussed.
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