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.
关键词
拓宽桥/混凝土拼接缝/车桥耦合振动/振动临界值/交通管制
Key words
widening bridge/concrete stitch/vehicle-bridge coupled vibration/critical vibration value/traffic control
维普
万方数据