【摘要】 本文着重研究了铁路桥的纵向耦朕振动特性的计算方法及其近似计算的方法。指出桥墩的纵向耦联振动可以近似地归结为单墩加墩顶集中质量M来计算,但文献中关于M选取原则值得商榷。文中推出了选取M值的具体原则。用本文方法计算的结果与实测对比,吻合较好。更多还原

【Abstract】 This paper studies chiefly the calculating method and its approximation approach for the characteristics of longitudinal couplod vibration of rialway bridges and piers。 It is pointed out the longitudinal coupled vibration can be approximately summed up as the vibration of a single pier on which a concentrated mass M is applied, and the principle for selecting the M value stated in bibliography [1] is open to question。 Subsequently a concrete principle for selection of M value is worked out in this paper; the calculation results obtained by the proposed method agree fairly well with that from actual measurements.更多还原