SU857621A1 - Iron-reinforced concrete pipeline - Google Patents

Description

one

The invention relates to the construction of non-circular section steel-reinforced concrete pipelines provided with steel linings.

The steel-reinforced concrete pipeline is known to have a non-circular, for example, rectangular section, comprising steel shells provided with stiffening ribs, at which the intersections of the shells form crosses, whose branches are turned into concrete and rigidly connected to the reinforcement 1.

The disadvantage of this pipeline is the lack of operational reliability, due to the formation of stress concentrations in the corners of steel shells, as well as increased steel consumption for the formation of continuous crosses at the intersections of the shells.

The steel-reinforced concrete pipeline is known to be non-circular, for example rectangular, with a cross-section with internal steel shells provided with stiffening ribs and forming crosses and anchor rods at their intersections, the ends of which are embedded in concrete, with

This ends of the steel shells, forming a cross, made in the form of combs 2.

The disadvantage of this pipeline design is the difficulty of its tightness in the corners (at the intersection of the dies), as well as the concentration of stresses in the corners held together by the assembly.

The purpose of the invention is to increase the operational reliability of the pipeline.

The goal is achieved by the fact that the remaining shells in the corners of the pipeline

10 are installed with each other with a gap and provided with additional stiffening ribs, hermetically welded to the shells.

FIG. 1 shows the pipeline, cross section; in fig. 2 — node I in FIG. one.

15

The pipeline is a closed frame 1 of rectangular cross section, made of concrete or reinforced concrete. From the inside, the pipeline is lined with steel shells 2, on the outer surface of which reinforcing ribs 3 of rigidity are attached, for example, from steel strips.

In the corners of the pipeline between the shells of its adjacent elements, gaps 4 are formed.

Claims (1)

Claim Steel-reinforced concrete pipeline of a non-circular, for example rectangular, cross-section with internal steel shells equipped with anchor rods welded at the corners of the pipeline and stiffeners whose ends are embedded in concrete, characterized in that, in order to increase the operational reliability of the pipeline, steel shells are installed in the corners of the pipeline between themselves with a gap and are equipped with additional stiffeners hermetically welded to the shells.