一、概况自1965年以来,国内预应力混凝土电杆的试验研究取得了很大成果,在生产工艺上也积累了不少先进经验。特别是1966年3月建材部在武汉召开预应力混凝土电杆技术鉴定会议,总结交流了国内各单位在生产预应力混凝土电杆方面的经验,对全国预应 First, an overview Since 1965, the experimental research of domestic prestressed concrete pole has made great achievements in the production process has also accumulated a lot of advanced experience. In particular, in March 1966, the Ministry of Construction Materials held a meeting on the identification of prestressed concrete poles in Wuhan. The meeting summed up the experience of all domestic units in the production of prestressed concrete poles,