Prestressed steel cylinder reinforced concrete pipe with steel socket and spigot

Abstract

The invention relates to a prestressed steel cylinder reinforced concrete pipe with a steel socket and a steel spigot, comprising a socket, a spigot, a concrete pipe core, a steel cylinder, a prestressed steel wire and a protecting layer, wherein the socket and the spigot in a concrete pipe core are fixedly installed with a longitudinal reinforced bar; and a connecting steel ring is respectively fixedly installed at two ends of the steel cylinder between the steel cylinder and the spigot and the socket in the radial direction. Through improvement, the invention still has excellent impermeability, corrosion resistance, prevention of non-uniform settlement, low cost of raw material and construction, simple construction process and convenient maintenance and can save external mould and control the wall thickness of the concrete pipe, thereby saving the production cost, reducing steps of forming concrete pipe core and improving the production efficiency.

Description

technical field [0001] The invention relates to a concrete pipe, in particular to a steel socket prestressed steel cylinder reinforced concrete pipe. Background technique [0002] The steel socket prestressed steel cylinder concrete pipe widely used in large-scale liquid transportation projects, because a steel cylinder is embedded in the concrete core, and the two ends of the steel cylinder are respectively coaxially fixed directly on the steel socket and the steel cylinder. On the socket, so that the entire concrete pipe itself forms a closed whole, thus effectively solving the problem of the delivery liquid seeping out of the concrete pipe wall due to the pressure of the delivery liquid. The existing prestressed steel cylinder concrete pipe with steel socket socket has the following problems in the manufacturing process: 1. The concrete pipe core is molded by the inner and outer molds. Since the inner and outer molds are customized, the inner and outer molds of the pipe m...

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Problems solved by technology

The existing prestressed steel cylinder concrete pipe with steel socket socket has the following problems in the manufacturing process: 1. The concrete pipe core is molded by the inner and outer molds. Since the inner and outer molds are customized, the inner and outer molds of the pipe mold The distance between the molds is a fixed value, corresponding to different working conditions and different working conditions of the same project, the wall thickness of the tube core can only be fine-tuned by adjusting the pitch of the prestressed steel wire. The forming process of this type of inner and outer mold cannot It is suitable for concrete pipes whose wall thickness can be adjusted freely; 2. The cost of the pipe mold used to form the concrete pipe core is relatively high, especially the outer mold in the pipe mold, whose weight accounts for about 1 / 3 of the entire pipe mold, and the production cost 3. In the forming process of the prestressed steel cylinder concrete pipe with steel socket socket, the concrete tube core takes a long time to form, and the tube core forming requires the cooperation of the outer mold, the inner mold, the bottom mold and the top mold. Each pipe mold takes a long time and the production efficiency is low

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