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一、概述目前,我国设计和生产环形预应力混凝土电杆均采用Φ~56、Φ~55或~Φ~s7、Φ~s5作为主筋,近年来,由于制作Φ~b6冷拔低碳钢丝用的Φ8普通低碳钢热轧圆盘条货源紧张,影响了电杆行业的生产。为了解决这一问题,我厂于1985年开始研究以Φ~b4为主筋生产电杆(12m)的配筋方案,并于1986年4月通过了技术鉴定。经本县供电、邮电及水利系统三年来的实际使用表明,效果良好。由于制作Φ~b4用的Φ~b6.5热轧圆盘条
I. Overview At present, China’s design and production of circular prestressed concrete poles use Φ~56, Φ~55 or ~Φ~s7, Φ~s5 as the main ribs. In recent years, due to the production of Φ~b6 cold drawn low carbon steel wire, The Φ8 ordinary low-carbon steel hot-rolled discs have been under tight supply, which has affected the production of the pole industry. In order to solve this problem, in 1985, our factory began to study the reinforcement plan for the production of electric poles (12m) with Φ~b4 as the main reinforcement, and passed the technical appraisal in April 1986. The actual use of the county’s power supply, post and telecommunications and water conservancy systems over the past three years shows that the results are good. Due to the production of Φ~b4 Φ~b6.5 hot-rolled discs