RU2002986C1 - Ferroconcrete pipe and butt joint of pipes - Google Patents

Abstract

SUMMARY OF THE INVENTION: A steel spiral seam cylinder is provided with spiral stiffeners directed into the pipe. The spirals of springs are wound on the outer surface of the cylinder in the opposite direction with spiral stiffeners. The stiffening ribs are made multi-start and are located along the spiral seam. The spiral-seam cylinder is made with outlets at the ends of the pipe, and the pipe with the inner and outer protective layers. 2 sec and 1 zlf-py, 6 oia

Description

The invention relates to the construction industry and can be used in all sectors of the national economy for the construction of underground pressure pipelines.

The purpose of the invention is to simplify the construction of reinforced concrete pipes and to increase the reliability of the butt joint of pipes.

Figure 1 shows a half-diametrical section of a reinforced concrete pipe connected to a similar pipe; figure 2 is a section aa in figure 1; on figs - section BB in fig. 1; Fig. 4 is a half-diametrical section of a reinforced concrete pipe without an inner protective layer connected to an analog pipe; figure 5 is a section bb in figure 4; 6 is a butt joint of reinforced concrete pipes, not protected by a sleeve.

The reinforced concrete pipe contains a core made in the form of a steel spiral suture cylinder 1 with spiral stiffening ribs 2 directed inside the pipe and spiral springs 3 made of steel wire wound on its outer surface, the turns of which are arranged in the opposite direction to spiral stiffeners, the outer 4 and 5 inner layers 4 and 6 of fine-grained hydraulic concrete or synthetic plastic. Spiral stiffening ribs 2 are multi-start and are located along a spiral seam. Layer 4 has conical ends 6, the smaller conical section of which is located at the outer surface of the cylinder 1.

The spiral suture cylinder 1 is placed in layers 4 and 5 with outlets 7 on both sides, designed for rigid connection with multi-helical end-to-end spiral stiffeners 2 with corresponding stiffeners of the abutting pipe.

The reinforced concrete pipe in the second case (see FIGS. 4 and 5) can be made with one layer 4 of fine-grained hydro-technical concrete or synthetic plastic. Joint reinforced, joint

Claims (3)

1. Reinforced concrete pipe comprising a Steel spiral seam cylinder provided with spiral stiffeners directed inside the pipe, spring spirals wound on the outer surface of the cylinder in the opposite direction to spiral stiffeners, outer and inner protective layers, characterized in that the spiral stiffeners multi-run5 5 0 5 0 5 0 5 0 the wearing elements of which are made in the form of a steel tightening ring 8 with rods 9 rigidly fixed inside it around the circumference, arranged parallel to the longitudinal axis of the pipes at an equal distance from each other, equipped with a channel-shaped connector 10 with holes, one end 11 of the tightening ring 8 is fixed in the hole of the channel-shaped connector inseparably, and the other end 12 is able to tighten the ring 8 with the nut 13. The outlets 7 of the steel cylinders and the steel tightening ring 8 with the rods 9 are protected by a conical coupling 14 of concrete, the smaller conical base of which is located at the outer surface of the pipe. During installation, reinforced concrete pipes are joined by outlets 7, combining multi-way spiral stiffening ribs 2 of cylinder 1 stiffness with corresponding ribs of the joined pipe and rigidly connected, for example, by electro-welding. Then, a ring 8 with rods 9 and a connector 10 is installed on the joint, the threaded end 12 is inserted into the hole of the connector and tightened with a nut 13 until the rods 9 are snug, the ends of which are welded to the cylinders. After that, the pipe connection is protected from the outside by a monolithic device concrete coupling 14, and from the inside, the joint is filled with cement mortar 15. Such a construction of a reinforced concrete pipe can be of considerable interest to the national economy, since the proposed technical solution allows to reduce metal consumption, simplify manufacturing, guarantee water tightness, increase the reliability and service life of underground switching. (56) USSR Copyright Certificate No. 956892, cl. F 16 L 9/08, 1982. USSR copyright certificate No. 1341439, cl. F 16 L 13/02, 1987. ny located along the spiral a seam, and the spiral-seam cylinder is made with protrusions at the ends of the pipe. 2. The pipe according to claim 1, characterized in that it is made with one outer protective layer 5. 3. A butt joint of pipes containing pipes with a steel core and connecting elements, characterized in that the stiffening ribs of the joined pipes are rigidly bonded end-to-end, connecting the elements are made in the form of a steel tightening ring with rods rigidly fixed inside it around the circumference, located parallel to the longitudinal openings of the channel-shaped connector are inseparable, and the other with the possibility of tightening the ring with a nut, and the core outlets and the axes of the pipes at an equal distance from 5, the ring is protected by a conical coupling, the other equipped with a channel-shaped one, the smaller base of which is located with a unifier with holes, one at the outer surface, the end of the tightening ring is fixed in openings of the channel-shaped connector are inseparable, and the other with the possibility of tightening the ring with a nut, and the core outlets and the ring is protected by a conical sleeve, the smaller base of which is located on the outer surface, 9 AND 1 5 FIG. 2 Bb Fig.Z S 9 X FIG. 5 / 10 15 FIG. at