Residual life assessment of electricity pylons-a case study

摘要：

This case study describes a structural integrity assessment of a 220 kV overhead power line.The line comprises 70 pylons over a distance of approximately 30 km,predominantly in a valley location.The pylons are spaced at intervals of approximately 400 m and each pylon is approximately 32 m in height.The line was originally constructed in the 1950s,approximately 50 years prior to the requested structural integrity assessment.This paper describes the independent assessment that was carried out.The review established site-specific safety factors at the time of original design and construction;at the time of the review (2007),accounting for the possible presence of the Thomasstahl steel;and in the future,at the anticipated end of pylon life (in 2012).

关键词： life structural assessment pylons

作者: John R Maguire

作者单位: Lloyds Register EMEA,Technical Investigations,71 Fenchurch Street.London,UK

会议类型: 国际会议

会议名称: The 8th International Conference on Damage Assessment of Structures(DAMAS 2009)(第八届结构损伤评价国际学术会议)

会议地点: 北京

会议语种:英文

页码: 219-228

在线出版日期: 2009-08-03（万方平台首次上网日期，不代表论文的发表时间）