Under The Action Of Normal Operation And Heavyweight Vehicles Traffic Load Bridge Space Dynamic Response Analysis

With heavy goods highway transportation increasing demand and auto industry rapiddevelopment,highway heavyweight vehicle increasing number admitted and specifications arediverse and complex,heavyweight vehicle load distribution characteristics has beenchanged,to study the experimental observations to heavyweight vehicle load distributioncharacteristics as the basis,so choose typical highway to launch a full investigationheavyweight vehicle traffic load,and on the basis of research bridge response relation ofheavyweight and highwayⅠ level has the very vital significance.In addition, previous axlecoupling research often ignore vehicle speed and the randomness of the transverse position,therefore has a certain limitation,so the vehicle and vehicle speed bridge transverse position ofthe response is very necessary.This paper mainly studies include the following respects:1.Summarize random traffic survey method and survey bridges select, analyzedobjectively the time parameter character representative vehicles,and then according to thispaper studies the bridge response relation of heavyweight and highwayⅠ level, Introduced thetraffic load is introduced.the research method, the selection of survey bridge and Focuses onthe analysis heavyweight vehicle parameters.2. With the static and dynamic modified through continuous girder bridge for a finiteelement model of the benchmark model, in a random traffic load based on traffic survey, useof axle coupling vibration analysis program BDANS, through the comparison and analysis ofthe bridge response transverse position and not random vehicles random, random and notrandom speed, studying the normal operation of the vehicle lateral position and speed of thebridge response.3. With the static and dynamic modified through continuous girder bridge for a finiteelement model of the benchmark model, in heavyweight vehicle traffic load based on trafficsurvey, use of axle coupling vibration analysis program BDANS, through the comparison andanalysis of the car and highway level is introduced.the function respectively bridge response,studying the bridge response relationship between heavyweight vehicle andhighwayⅠ level.