Hydraulic performance of expanded steel pipe joint

• Published in: Transactions of The Japanese Society of Irrigation, Drainage and Reclamation Engineering Vol. 2004; no. 232; pp. 427 - 432
• Main Authors: Matsushima, S. (JFE Engineering Co. Ltd., Yokohama (Japan)), Imai, T, Tanaka, Y, Naka, T
• Format: Journal Article
• Language: Japanese
• Published: The Japanese Society of Irrigation, Drainage and Rural Engineering 2004
• Subjects: CIVIL ENGINEERING; CONSTRUCTION; Friction factor; Friction loss; HYDRAULIC ENGINEERING; Hydraulic performance; JOINTS (TIMBER); PERFORMANCE TESTING; Pipe end expanded joint; PIPES; Steel pipe
• ISSN: 0387-2335; 1884-7234
• DOI: 10.11408/jsidre1965.2004.427

Authors devised the expanded steel pipe joint characterized by the structure that utilized the ductility and the toughness of steel, and the elasticity of rubber for the purpose of improvement in the reliability of steel pipeline construction, or large construction nature. As compared with the conventional welding joint, the unevenness of an inside was large and hydraulic performance needed to be checked. Then, hydraulic experiment was conducted with the test tube of the diameter of a small sum using the new joint and the conventional welding joint, and the hydraulic performance was evaluated relatively. Moreover, while examining in the pipeline constructed with the actually new joint and verifying the result of a previous experiment, the friction factor which should be adopted in the hydraulic design of the pipeline which applied the new joint was examined. The hydraulic performance of the pipeline, which applied the new joint, was not based cm direction of a joint, but it was the conventional welding steel pipeline and more than equivalent, and when using the same friction factor (C= 130) as a welding steel pipeline, it turns out that it is a safety side at least.