Pressure-resistant culvert pipe with small section and circumferential stress and preparation process thereof
A small cross-section, culvert pipe technology, applied in the direction of pipes, rigid pipes, mechanical equipment, etc., can solve the problems of poor use effect, large amount of engineering, endangering physical and mental health, etc., and achieve the advantages of prolonging service life, high construction efficiency, and enhancing bending resistance Effect
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[0041] As shown in the drawings, the present invention includes a concrete culvert body 1 and a cylindrical skeleton made of ring bars and longitudinal bars arranged in the culvert body 1, which is characterized in that the cylindrical skeleton is composed of an inner layer skeleton 6 Constituted with the outer frame 2, the inner frame 6 is fixed with a longitudinal tube 9, the outer frame 2 is fixed with a continuously rotating positive rotation bobbin 3, and the longitudinal tube 9 on the inner frame 6 is provided with a Fixed, the other end is continuously stretched to produce prestressed steel strands 10, and the positive rotation bobbin tube 3 on the outer skeleton 2 is provided with steel strands 10 that are continuously stretched to produce prestressed steel strands. The culvert body 1 The inner wall is provided with a pulling anchor 12 connected to the steel strand 10 in the forward-rotating bobbin 3 for pulling and anchoring the steel strands in the forward-rotating bo...
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