A three-dimensional finite element model of the Huihe super large bridge on the Shuozhou-Huanghuagang railway was established to analyze the stress laws of the track-beam-pier of the bridge under different loads,and the differences between the two-dimensional and three-dimensional calculation models were compared.The results show that under bending and braking,the transverse force acting on the pier top is smaller than the longitudinal force acting on the pier top,while under expansion and contraction,the transverse force acting on the 3#—24#piers top is greater than the longitudinal force.The proportion of braking force transmitted from the track surface to the longitudinal and transverse directions of the pier top is 86%and 3%,respectively.The proportion of centrifugal force transmitted from the track surface to the longitudinal and transverse directions of the pier top is 12%and 86%,respectively.
维普
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