1摘要随着地铁牵引供电接触网悬挂形式的变迁，刚性悬挂技术在地铁中表现出了良好发展潜力。
虽然其一次投资费用稍高，但安全性能高，污染少，维护材料与人工费用少，远期效益明显。
在国外地铁界，架空刚性接触网已大量采用，效果很好。
架空刚性接触网有很多的特点：整体结构简洁、锚段关节和线岔安装调试方便、网两端无需设置下锚张力补偿装置、没有断线之忧、施工安装和维护检修精度要求高等等，另外架空刚性接触网能很好地满足低净空隧道要求，适用于地下铁道。
架空刚性接触网的运行维护检修缺少资料和经验，只能通过实践摸索和积累。
笔者针对成都地铁刚性接触网的实际情况，并参考了大量国内外资料，对架空刚性接触网的组成、特点和检修进行了粗浅探讨。
关键词：地铁; 牵引供电; 刚性接触网AbstractAs the subway traction power supply catenary suspension form of change, rigid suspended technique in the performance of a good development potential. Although one investment cost is a little bit higher, but the safety performance is high, less pollution, maintain material and artificial costs less, long-term benefit. In the foreign subway world, overhead rigid catenary already used in great quantities, the effect is very good. The overhead rigid catenary has a lot of features: the whole structure is simple, anchor, period of the joints and line installation convenient, nets with both ends without Settings anchor tension compensation devices, and not worry about break, construction installation and repair and maintenance of the precision requirement high and so on, in addition the overhead rigid catenary can well meet the requirements of low headroom tunnel, applicable to the underground. The overhead rigid catenary of repair and maintenance of lack of material and operation experience, can only through the practice of learning and accumulation. According to the chengdu subway rigid catenary of practice, and a reference foreign material, on overheadrigid catenary of composition, characteristics and the overhaul this paper has made some simple.【Key words】the subway; Traction power supply; Rigid catenary2前言成都地铁地下线路采用架空式刚性接触接触网，地面线路采用传统的柔性接触网。
