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预应力钢筒砼管(PCCP)的研制在我国刚刚起步,而在欧美等国家已推广应用几十年。目前正在利比亚施工的世界最大引水工程也采用这种管型。其特点是省钢材、耐高压、高抗渗、接头密封性能好,具有相当大的发展前景。本文介绍这种管材研制方法,并进行了技术经济论证。我国管道业对预应力钢筒砼管应给予必要重视,使其能较快地得到应用和推广。
The development of pre-stressed steel pipe (PCCP) has just started in China, but has been applied in Europe and the United States and other countries for several decades. The world’s largest water diversion project currently under construction in Libya also uses this type of pipe. Its characteristics are the province’s steel products, high pressure resistance, high impermeability, good joint sealing performance, and it has considerable development prospects. This article describes this method of pipe development, and conducted a technical and economic argumentation. China’s pipeline industry should pay due attention to prestressed steel pipe sampans so that they can be applied and promoted quickly.