SU1502752A1 - Reinforcement lattice - Google Patents

Abstract

The invention can be used for the manufacture of base plates, which allows to increase the carrying capacity of the grid and simplify its manufacture. The grid contains longitudinal 1 and transverse 2 rods, freely superimposed without connection with alternation from two sides relative to each other at their intersections. On the perimeter of the grid there is a contour element 3, to which the ends of the rods are welded. The stiffness of the cross section of the contour element is greater than the stiffness of the rods. 1 hp ff, 4 ill.

Description

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The invention relates to reinforcing meshes for reinforced concrete elements and can be used for the manufacture of base plates, for example, supports for a high-voltage transmission line.

The purpose of the invention is to increase the carrying capacity of the grid and simplify its manufacture.

FIG. 1 shows a grid, a general view; in fig. 2 shows section A-A in FIG. 1, when performing a contour element of the rods of a round profile; in fig. 3 - the same, from the rolling profile; in fig. 4 shows a section BB in FIG. one.

The reinforcing mesh contains longitudinal 1 and transverse 2 rods, freely superimposed without connection with alternation from two sides relative to each other at their intersections. On the perimeter of the grid there is a contour element 3, to which the ends of the rods 1 and 2 are welded.

The stiffness of the cross-section of the contour element 3 is greater than the stiffness of the rods 1 and 2, which is achieved by the implementation of this element from the assortments with a large moment of inertia of its own section, for example from the rolling profile 4. When performing the contour element 3 of the round rods 5, their diameter must be greater than the diameter of the rods 1 and 2.

In the fabrication of the reinforcement mesh, the longitudinal 1 and transverse 2 rods are laid crosswise with the contour element 3 with a predetermined pitch. So that they alternate from two sides relative to each other at the points of mutual intersections. Then KON1TS51 rods 1 and 2 are welded by spot welding and contour element 3, without welding the rods together at intersections.

As a part of a reinforced concrete slab of the foundation, reinforcing mesh rods

they are bent according to the type of a beam with clamped ends, for which the maximum bending moment is less than for a beam that lies freely on the supports. The alternation of rods from two sides relative to each other allows to obtain intermediate supports along the length of each rod at their intersections, which are located below the cross rods, which also improves the distribution of loads in the grid plane. Making the contour element from the rolling profile increases its rigidity both in the plane of the mesh, which is necessary for perceiving stresses from the deflection of the rods, and in its transverse direction, which is necessary for perceiving lateral loads by the contour element itself.

Thus, the invention makes it possible to increase the carrying capacity of the grid by optimally perceiving it with bending load rods, as well as to simplify its manufacture by eliminating the welding of rods at their intersections without reducing the strength of the grid.

Claims (2)

1. Armaturn mesh containing longitudinal and transverse rods arranged alternately from two sides relative to each other at intersections, in order to increase its bearing capacity and simplify production, along its perimeter there is a contour an element whose cross-sectional stiffness is greater than the stubble's stiffness, which at the same time freely superimposed on each other and attached by ends to the contour element. 2. Mesh according to claim 1, characterized in that the contour element is made of a rolling profile. f (-A Q FIG. g  CL Phie 3 : Compiled by V. Gerasimov Editor A. Motyl Tehred L. Oliynyk Proofreader M Pojo Order 5058/42 Circulation 644 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 about about about BUT . Subscription