Q460高强钢管在输电工程中的应用研究

Application Research on Q460 High-strength Steel Tube in Transmission Line Project

摘要: 随着电力走廊日益狭窄，导致塔型向多回路、大荷载发展，高强钢的应用迫在眉睫。本文依托某500 kV工程，针对高风速、多回路等条件，从国内外应用、材质、结构布置、真型试验、工程措施等多方面，进行塔型分析比较。结果表明：采用Q460高强钢管，能有效减轻塔重；塔身刚度好、挠度小；试验塔强度和构造措施均符合设计要求，并有一定的安全储备。因此，在大荷载条件下，应用Q460高强钢管具有明显的经济效益和社会效益。

Abstract: With the increasingly narrow power corridor, the tower type is developing to multi-loop and high load, and the application of high strength steel is imminent. Based on a 500 kV project, aimed at high wind speed, multi loop conditions, this paper analyzed and compared the tower type in many aspects, such as the domestic and foreign application type, material, structure arrangement, full-scale test, engineering measures. The results show that the weight of the steel tube can be reduced effectively by using Q460. The stiffness of the tower is good and the deflection is small. The test tower strength and construction measure meet the design requirements, and have certain safety reserves. Therefore, under the large load conditions, the application of Q460 high strength steel tube has obvious economic and social benefits.