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近年来,为了不断提高预应力离心混凝土电杆的质量并使之标准化,对预应力离心混凝土电杆设计的一些技术参数作了进一步试验研究。本文主要介绍直径5毫米光面高强钢丝在电杆中应力传递长度试验及试验结果,同时也涉及电杆生产工艺中一些参数的测定,如预应力钢丝张拉控制应力的大小,钢丝应力的均匀性等。一、应力传递长度的一般规定在先张法预应力混凝土构件中,钢筋的预拉应力是通过钢筋和混凝土之间摩擦力和
In recent years, in order to continuously improve the quality and standardization of the prestressed concrete poles, further experimental researches have been conducted on some technical parameters of prestressed centrifugal concrete poles. This article mainly introduces the stress transfer length test and test results of a 5 mm diameter high-strength steel wire in a pole. It also involves the determination of some parameters in the production process of the pole, such as the prestressed wire tension control stress and the uniform steel wire stress. Sex etc. First, the general provisions of the length of stress transmission in the pre-tensioned prestressed concrete components, the pre-tension stress of the steel is through the friction between the steel and concrete and