在国外,对较长的预应力混凝土电杆,为了解决运输问题并考虑到生产与安装的方便,常常把电杆分成几段制造,安装时才把各段接在一起。常用的接头方法有:美国的搭接法和法兰盘固定法,德国的栓接法,日本的焊接法等,现分别简介如下。搭接(Lap Splice) 这种接头方法如图1所示,把一段带底 In foreign countries, for the long prestressed concrete poles, in order to solve the transportation problem and take into account the convenience of production and installation, the poles are often divided into several sections, and the sections are connected together during installation. The commonly used joint methods are: the United States lap method and flange fixation method, Germany’s bolting method, Japan’s welding method, etc., are respectively introduced as follows. Lap Splice This joint method is shown in Figure 1, with a section of the bottom