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介绍高效预应力混凝土技术在贵阳第二长途电信枢纽工程１２ｍ 跨楼盖设计和施工中的应用，针对该工程采用外筒内框的结构形式，详细介绍了无粘结预应力的主要施工工艺。
The application of high-efficiency prestressed concrete technology in the design and construction of the 12m span floor cover of the second long-distance telecommunication hub project in Guiyang is introduced. The main construction process of non-cohesive prestressing is introduced in detail in terms of the structure of the outer cylinder inner frame.