既有线提速接触网硬点消除的探讨

既有线第6次大面积提速给接触网平顺性提出了更高的要求，同时也给接触网的施工和维护单位的改造、检护、维修工作提出了新的课题。此文结合哈尔滨铁路局在既有线接触网整治中的成功做法和经验，就既有线提速以后如何消除接触网硬点和提高接触网平顺性进行了有益探讨。

Exploration of eliminating catenary hard spots after speed increase of existing railway lines

The sixth speed increase of existing lines across a greater area sets forth higher smoothness requirements of the overhead contact system,and also poses a new research study to the catenary installation and maintenance units in the work of renovation,inspection and maintenance of the system.This article,combined with the successful methods used for and experience in the catenary rectification of the existing lines under the Harbin Railway Administration,makes a useful exploration of how to remove the hard spots and improve the smoothness of the overhead contact system after the speed raise of the existing lines.