自立式铁塔 meaning in English
self supporting tower
self-supporting tower
selfsupportingtower
Examples
- In view of the rapid development of electric undertaking and a sharp increase of steel products consumption , the state development planning commission , the former state water resources and hydropower ministry and state energy ministry have been urging that the building of steel towers should be strictly controlled in the construction of transformer substations ; and warning that the need of the present 500kv power transmission and transformer trusses can hardly be satisfied by ordinary steel and concrete electric poles or prestressed concrete poles , which have endangered the operation and longevity of the high voltage transmitting line due to the common problem of cracks by gravity
随着电力工业建设的迅速发展，钢材的用量急剧增长，为此，国家计委，原水电部和能源部一再强调在输变电工程建设中，应从严掌握自立式铁塔的建设。然而，一般的钢筋混凝土电杆或与预应力混凝土电杆，较普遍地存在着纵向裂缝问题，严重影响了高压输电线路的安全运行及其使用寿命，已不能适应高压输电杆塔和变电构架的要求。