输电线路混凝土电杆安全性评估方法研究

架空输电线路由于长期经受荷载以及恶劣环境等作用,混凝土电杆构件会出现混凝土保护层开裂、钢筋锈蚀等现象,严重影响输电线路安全稳定运行。依据混凝土电杆特点及现有研究成果,提出了输电线路混凝土电杆安全性的3阶段评估体系;并针对输电线路混凝土电杆提出安全状态评价方法;最后提出了输电线路混凝土电杆基于结构可靠性理论的安全性能评定方法。这些研究成果的提出,基本上建立了一套输电线路混凝土电杆安全性评估体系,为准确掌握输电线路混凝土电杆健康水平,完善设备状态检修工作内容,确保输电线路安全稳定运行具有现实意义。

Evaluation Method for Concrete Pole Safety of Overhead Transmission Line

It is common for the concrete poles of overhead transmission lines to crack in protection layer and rust in reinforcement due to the long-term load action and poor environment, which has significant adverse impacts on the function of overhead transmission lines. Based on the characteristics and relevant research results of concrete poles, a three-phase assessment system, an AHP(analytic hierarchy process)-based assessment method and a structural reliability theory-based gradation method are proposed respectively for the safety, safety state and safety performance of the concrete poles of overhead transmission lines. With these research results a complete safety assessment system is established for the concrete poles of overhead transmission lines, which is significant for accurately understanding the health state of the concrete poles, perfecting the service work of equipment and ensuring the steady function of overhead transmission lines.