220kV双分裂双回路输电线路设计

摘要：本设计讲述了某平丘区段架空输电线路设计的全部内容，主要设计步骤是按《架空输电线路设计》书中的设计步骤，和现实中的设计步骤是不一样的。本设计包括导线、地线的比载计算、临界档距、最大弧垂的判断，力学特性的计算，金具的选取，定位排杆，代表档距的计算，各种校验，杆塔荷载的计算，接地装置的设计以及基础设计等。在本次设计中，重点是线路设计，杆塔定位和基础设计。

关键词： 导线  避雷线  比载  应力  弧垂  杆塔定位

Abstract：In this text, it includes all the steps in of overhead power transmission line design, which is Accordance with《the design of overhead power transmission line 》, but it is not the same with the reality .this article discussed the conductor and the ground wire's coMParing load critical span .the maximum arc-perpendiculer judgement .mechanics property's fixed position of shaft-tower. various checking .representative span's calculating. load ppplied on iron tower calculating. equipment used in the ground connection design. metal appliance  choose .In this paper, it is the focal point of line design. iron tower design and fundament design ,at last ,it is simply introduced the iron tower erecting's design and  fundament design followed with fundament construction.

Key words：conductor   overhead ground wire   coMParing load

stress arc-perpendiculer      fixed position of shaft-tower