青岛西站机务段铁路线路病害的施工维护方法探究

铁路线路作为我国铁路交通运输中最基础的设备,不仅可以推进我国铁路交通的正常运行,而且在促进社会主义经济的发展方面,也有着十分关键的作用。随着列车不断提速,对设备提出了更高的要求,但由于列车密度大、全部为重车并且是单方向运行,加大了对线路的冲击力,造成木枕线路爬行严重。设备保养单位对线路爬行进行整治,但因为整修后的设备,保养周期短,难以长久维持,所以必须对木枕线路爬行地段进行集中整治,全面整治,全面改善设备质量,尤其是小半径曲线地段,更应该高度重视,加强设备整修,保证铁路运输安全。本论文根据青岛西站机务段木枕线路爬行病害的目前状况,提出我单位铁路线路养护存在的主要问题和矛盾所在,针对这些问题提出解决方案和预防的方法。

Mechanics model of additional longitudinal force transmission between bridges and continuously welded rails with small resistance fasteners

A new mechanics model, which reveals additional longitudinal force transmission between the continuously welded rails and the bridges, is established on the fact that the influence of the mutual relative displacement (among) the rail, the sleeper and the beam is taken into account. An example is presented and numerical results are compared. The results show that the additional longitudinal forces calculated with the new model are less than those of the previous, especially in the case of the flexible pier bridges. The new model is also suitable for the analysis of the additional longitudinal force transmission between rails and bridges of ballastless track with small resistance fasteners without taking the sleeper displacement into account, and compared with the ballast bridges, the ballastless bridges have a much stronger additional longitudinal force transmission between the continuously welded rails and the bridges.