Large Diameter Prestressed Concrete Cylinder Pipe Technology

Prestressed concrete cylinder pipe(for short"pccp")is the world's water works of the most widely used ideal pipe, and its basic material is steel, high strength steel, cement, sand and gravel. These materials are composed of concrete and steel composite tube die, then die outside the wound pre-stressed high-strength steel wire, steel wire roll shot outside the protective layer of cement mortar, the socket at both ends of a steel ring and steel for Sandy Bay and the overall form. The characteristics of this design is the performance of high-strength concrete and the corrosion resistance of metals and metal plates to the impermeability combine.In this paper, the needle 0.8 / 2 (0.8 MPa/2m depth) Large Diameter Prestressed Concrete Cylinder Pipe, from the structural design and analysis of the technical quality of the structure of the mechanism and structure of performance, through pilot studies to further define a reasonable process for welding steel jack parameters, steel tube welding parameters and welding reasonable methods to ensure accurate size for socket welding, solder joints to ensure a solid steel tube, steel tube hydraulic test watertight, water; to meet the performance requirements of the structure;In this paper, the die mold Molding installation, concrete pouring sequence of die methods, vibration control analysis of summing up the experimental points to determine a reasonable method of operation, according to raw materials and pouring concrete for determining the applicable requirements of the concrete mix to ensure that concrete molding die quality, while ensuring that the exact location of the steel tube.In this paper, the winding wire prestressing process to identify and eliminate the negative factors, so that after the pre-stressed to meet the design requirements imposed on, die on the prestressed wire wound conditions in their work can withstand all kinds of external loads, the uniform wire tension and the accuracy of pitch wire to meet the design requirements to ensure the quality of winding wire, directly reflects the tube under internal and external pressure.