Steel faucet steel cylinder non-longitudinal rib prestressed concrete pipe

Abstract

The invention relates to a steel bell-and-spigot steel cylinder longitudinal-bar-free pre-stressed concrete pipe. A plurality of longitudinal bars which are axially embedded and have the same diameters are uniformly distributed in a pre-stressed concrete pipe core, and the two ends of each longitudinal bar are fixedly arranged on a pipe socket and a faucet of the pre-stressed concrete pipe core; and a steel cylinder is respectively and fixedly arranged on the pipe socket and the faucet of the pre-stressed concrete pipe core. The steel bell-and-spigot steel cylinder longitudinal-bar-free pre-stressed concrete pipe has simple overall structure, scientific and reasonable design, and good durability, barrier property and water resistance at joints; the longitudinal bars and the steel cylinder are adopted to replace the framework of steel reinforcement, thereby lowering steel consumption, facilitating convenient maintenance and simple operation, greatly reducing construction cost of the product, and creating the conditions for the wide application of the pre-stressed concrete pipes.

Description

technical field [0001] The invention relates to a concrete pipe, in particular to a prestressed concrete pipe with a steel socket and steel cylinder without longitudinal reinforcement. Background technique [0002] Steel socket prestressed concrete pipe is a pipe mainly used in municipal, water conservancy, electric power, and urban water supply and drainage systems. It is also often used in industrial water pipelines, farmland irrigation, and factory pipe networks. The current cost of prestressed concrete pipes with steel sockets is relatively high, and the main reasons for the high cost of prestressed concrete pipes with steel sockets are: 1. The rise in steel prices causes the cost to increase. The concrete pipe core is embedded with a cylindrical steel skeleton, which is formed by binding or welding multiple longitudinal bars and circumferential steel bars, and the amount of steel used is relatively large; 2. The manufacturing cost of the steel skeleton is relatively hig...

AI Technical Summary

Problems solved by technology

When the steel frame is bound manually, the production efficiency is low, the production cycle is long, and the defective rate is high; when the steel frame is fixed by welding with special equipment, although the production cycle is shortened and the defective rate is reduced, the mechanical equipment higher cost

[0003] At present, in the actual production of prestressed concrete pipes with steel sockets, micro-cracks are prone to appear at the socket end and socket end of the inner wall of the pipe, and the longitudinal tension of the pipe core is not high enough to cause micro-cracks

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