Controlling Countermeasures for Adverse Effect of Vibration on Widening Bridge Splice Joints Due to Moving Vehicle
The dynamic action of moving vehicles is an important factor that adversely affects the performance of concrete stitch of the widening bridges.Considering the characteristics of dynamic interaction between cars and bridges,it is necessary to carry out re-search on reasonable control measures to widen bridges.Firstly,the influence mechanism of vibration caused by traffic load on wide-ning bridge splice joints was analyzed.According to related experimental research results,the control indexes of vertical relative de-formation and vibration speed were proposed.For standard span concrete bridges,based on the statistical results of large sample data of vehicle-bridge coupling vibration analysis,a comprehensive control measure design method combining traffic control and piecewise pou-ring construction was proposed.The analysis of engineering examples shows that the method has good engineering applicability and con-trol effect.
widening bridgeconcrete stitchvehicle-bridge coupled vibrationcritical vibration valuetraffic control
万方数据
维普
