大轴重机车对铁路干线常用桥梁适应性分析

Analysis on Adaptability for High Axle-loads Locomotive to Common Bridge in Main-line Railway

采用MIDAS软件和Fortran95语言动力分析软件分别计算27t和30t轴重货车车辆的垂向载荷对我国铁路干线常用跨度桥梁（主要是以主跨4m和8m的小跨度桥为控制跨度）所产生的跨中弯矩和桥端剪力以及动力响应，通过调整电力机车的轴式、轴重等参数，使机车的垂向载荷对同一跨度桥梁的跨中弯矩和桥端剪力以及动力响应相接近，从而选择出与货车响应相一致的机车轴重、轴式等参数。在不超过线路采用的中一活载标准的前提下，确定合理的机车轴重、轴式等参数。

This paper calculates middle-span bending torsions and end-span shearing forces and dynamics responses made by the vertical loads from wagon with 27 t and 30 t axle-load to common-span bridges in China railway main-line, special to the short-span ones with 4 m and 8 m main-spans. The change of the axle-arrangements and the axle-loads for electric locomotive makes closely the middle-span bending torsions and end-span shearing forces and dynamics responses made by the vertical loads from the locomotive to the wagons. In no more than lines used in the under the premise of live load standard, determine a reasonable locomotive axle, axle and other parameters.