Study on Load-Limited Vehicle Models of Municipal Interchange Bridge
In order to propose load-limited vehicle models that can be used for the safety monitoring system response calculations for municipal interchange bridges,this paper took the vehicle load model proposed in the"Code for Design of the Municipal Bridge"and the"General Specifications for Design of Highway Bridges and Culverts,"and the data provided in the"Chinese Automobile Model Manual"as the objects for screen and study.Firstly,the vehicles were screened according to the number of axles,resulting in seven representative vehicles.Secondly,according to the engineering case of an municipal interchange bridge,a finite element model was established..The representative vehicles were loaded according to the predefined working conditions,and the section bending moment data were extracted to further analyze the impact of the representative vehicles on the bridge.The results showed that,in six working conditions,six out of the seven representative vehicles generated the maximum bending moment.Ultimately,after a series of calculation and analysis,this paper obtained the load-limited vehicle model suitable for municipal interchange bridges by evaluating the impact of vehicles using the bending moment as an index.
municipal interchange bridgesload-limited vehicle modelcontinuous curved box girderbridge safety monitoring technologyScreening of load-limited vehicles
NETL
NSTL
万方数据
