RU1781360C - Lintel - Google Patents

Abstract

Usage: in hydraulic engineering, in the construction of lintels, which serve to protect objects under construction from watercourses, for example, entrance portals of spillway tunnels. SUMMARY OF THE INVENTION: horizontal joints are formed between the blocks along the wall along the wall along the height of the building bridge. Holes are made in the blocks, which are aligned in height with the holes of adjacent blocks to form uniform channels. The holes are filled with non-explosive destructive substance, placed in a waterproof shell. 2 ill.

Description

The invention relates to the field of hydraulic engineering, and more particularly, to the construction of lintels to protect objects under construction from waterways, for example, entrance portals of spillway tunnels.

The purpose of the invention is to increase the efficiency of work by eliminating the explosive and reducing the hydrodynamic effects on the constructed structure while eliminating the lintel.

In FIG. 1 shows a plan section; in FIG. 2 is a section AA in FIG. 1.

The jumper is made in the form of an arched concrete wall of blocks 1, separated from each other by a layer of anti-adhesive 2 material, for example, bitumen; between the rows of blocks 1, horizontal seams 3 are formed along the wall along the height. In blocks 1, holes 4 are made, which are aligned in height with the holes of adjacent blocks 1, forming single channels. The holes are filled with non-explosive destructive substance 5, placed in a waterproof shell. As an non-explosive destructive substance, for example, a mixture of modified lime with a predominance of calcium oxide can be used (see, for example, Zh. Tekhnika Molodezhi, 1985, No. 9, p. 7), and a waterproof shell can be made of a plastic film. Inside the non-explosive destructive substance 5, perforated tubes 6 made of a low-strength material, for example, plastic, are located coaxially with the holes 4; inside the pipes with a step equal to the distance between the horizontal seams 3 of the wall, the transverse diaphragms 7 are tightly located, located above the horizontal seams 3, for example by 10-20 cm. The upper ends of the pipes 6 and the holes 4 in the wall are hermetically sealed with temporary caps 8, for example steel caps on

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sealant. Along the perimeter, perimeter seams 9 between the jumper wall and the structure are sealed with sealant 10.

A jumper is made as follows. On the prepared base in front of the inlet of the tunnel 11, prefabricated wall blocks 1 are laid (they can be made in place), matching the height of their holes 4, After the walls are erected, perforated pipes 6 are installed in the holes 4 and sprinkled with Modified lime 5 for the whole the height of the holes 4. Close the ends of the pipes 6 and holes 4 with protective caps 8 and coat them with sealant 10. Seal 10 with a sealant 10 perimeter seam 9 between the wall and the structure of the entrance portal 12 of the tunnel.

When the water level rises, the protective caps are removed from the holes 4 and pipes 6 from the openings 4 and pipes 6. When overflowing through the water bridge, from the end of the hole 4 enters lime 5 and into the perforated pipes 6; through holes 4 in pipes 6, water penetrates lime 5 and reacts with the latter. In this case, the content in the openings 4 is expanded and the upper bed of blocks 1 is destroyed to the level of the upper horizontal constructional seam 3. When the upper bed is destroyed and the jumper is destroyed, the pipe sections 6 with diaphragms 7 protruding from the underlying bed of blocks 1 are also destroyed. this inlet into the pipes 6 of the underlying bed of blocks 1, through which water enters the lime around the pipes, increasing its volume and destroys concrete.

Thus, a sequential automatic destruction of the concrete wall of the bridge with a given intensity occurs.

Claims (1)

The claims A building lintel made in the form of an arched concrete wall of blocks separated from each other by a layer of release material and containing holes for the placement of explosive, which means that in order to increase operational efficiency by eliminating explosive and reducing dynamic impact on the constructed structure during the elimination of the bridge, horizontal seams are formed between the blocks along the wall, the holes in the blocks are periodically made along the entire length of the wall, vertically aligned to the entire height Tenkai non-explosive and are filled with a breaking substance, placed in a watertight casing, wherein the inside of Great destructive. The perforated pipes from the low-strength mzterial are placed in the plane, in the plane of which, with a step equal to the distance between the horizontal seams of the lintel, transverse diaphragms are fixed located above the horizontal construction joints in the lintel, and the upper ends of the pipes and holes in the lintel are covered by temporary sealed caps-plugs. P. Figure 1 ff-5 10. .U - /: / k9 - / - rv. / s-- "; y-e / zj FIG. 2