SU870629A1 - Prefabricated ferroconcrete three-dimensional roof - Google Patents

Description

(54) PRECAST CONCRETE MIXTURE

COATING

I

The invention relates to the field of construction and can be used as precast reinforced concrete spatial coatings.

A spatial coverage is known, including contour elements made in the form of trusses and four interconnected shells made in the form of gipars from separate interconnected plates 1.

The disadvantage of this coating is the increased complexity of its construction.

A spatial coverage is known, including contour elements made in the form of plugs, and four interconnected between splices made in the form of hypars 2.

The disadvantages of such a coating are its limited dimensions and the increased labor intensity of manufacture.

The closest known technical solution to the present invention is precast reinforced concrete spatially covering, including contour elements and interconnected shells, outlined on the surface of negative Gaussian curvature and made of separate interconnected rectangular plates 3.

The disadvantages of this coating are a large number of plate sizes, increased labor intensity and material consumption.

The purpose of the invention is to unify, reduce the labor intensity of manufacturing and material intensity.

The goal is achieved by the fact that in precast reinforced concrete spatial coverage, which includes contour elements and interconnected shells, outlined along the surface of negative Gaussian curvature and made of separate interconnected rectangular or

Claims (3)

, 5 trapezoidal in terms of plates, the surface of each shell is made in the form of a convex-concave part of the torus surface, and each of the plates forming the shell is in the form of a convex-concave or cylindrical element, and in the direction of the convex curves of the torus plate are rigidly connected , and in the direction of concave curves, discrete connections. In this case, discrete connections can be made in the form of plates or rods attached to the plates; FIG. 1 shows the formation of the shell from the surface of the torus; in fig. 2 - axonometric shell in the form of a convex-concave surface of the torus; in fig. 3 the same in terms of; in fig. 4 shows a variant of a coating of shells in a perspective view; in fig. 5 - the same in terms of; in fig. 6 - shell plate with a surface in the form of a convex-concave part of the torus surface; in fig. 7 - shell plate with a cylindrical surface; in fig. 8 - node I; in fig. 9 - discrete connection of plates using reinforcing bars; in fig. 10 - discrete connection of plates with the help of overlays. Precast reinforced concrete spatial coating is formed by shells 1, the surface of which is made in the form of a convex-concave part of the surface of torus 2. Each shell 1 consists of precast reinforced concrete plates 3 and contour elements 4. Precast reinforced concrete plates 3, having a rectangular or trapezoidal shape in plan, can be made with a cylindrical surface or in the form of a convex-concave part of the torus surface. In the direction of the concave crimping torus, the plates 3 are connected by discrete connections, for example, in the form of reinforcement outlets 5. In the direction of the convex curves of the torus, the plates 3 are rigidly interconnected, for example, by monolithic schvukh between the concrete slabs 6. supplied with embedded parts 7 and connected in the direction of the concave torus curves with the lugs 8. The reinforcement or lining can be interconnected, for example, using electric welding 9. In the direction of the convex curves of the torus plate 3 with a cylindrical eskoy surface formed as a cylindrical surface. In the direction of the concave curves of the torus, the straight sides of these plates are inscribed into the concave forming surfaces of the torus. If the plates 3 are made in the form of a convex-concave surface of the torus, then the surface of the plate coincides with the surface of the shell. In the direction of the concave curves of the torus, the width of the seams between the plates is constant. Along the convex curves of the torus, the width of the schws is constant only in the case of a trapezoidal plan of the plates; in the case of rectangular plates, the width of the shvs increases as one approaches the contour elements of the fragment. The advantages of forming a shell from a convex-concave part of the surface of a torus of cylindrical plates are the possibility of unification and obtaining the minimum number of sizes of these plates. In addition, from such plates it is possible to assemble shells with a surface of positive Gaussian curvature. With such a cutting of the surface of the shell, the possibility of assembling without flattened scaffolding by the method of enlarging assembly appears. In this case, several slabs are connected into arched blocks provided with temporary fasteners-sprenges. These blocks are located along the convex curves of the torus. The estimated economic effect from the introduction of the invention should be 15-20 rubles / m. Claim 1. Composite reinforced spatial coating, including contour elements and interconnected shells, outlined on the surface of negative Gaussian curvature and made of separate interconnected rectangular or trapezoidal in terms of plates, characterized in that, in order to unify, reduce the laboriousness of manufacturing and material intensity the surface of each shell is made in the form of a convex-concave part of the torus surface, and each of the plates forming the shell is in the form of a convex a concave or cylindrical element, and in the direction of the convex curves of the torus plate are interconnected rigidly, and in the direction of the concave curves - discrete connections. 2. The coating according to claim 1, characterized in that the discrete communications are made in the form of overlays. 3. Coverage on PP. 1 and 2, characterized in that the discrete links are made in the form of rods. Sources of information taken into account in the examination 1. Ziegel K. Structure and form in modern architecture. Stroyizdat, 1965, p. 222, fig. 180. 2. Glukhovsky K.-A. and others. Manufacturing and installation of reinforced concrete shells. L., Stroyizdat, 1967, p. 194, fig. 85. 3. Mileykovsky I. Ye. And others. Gipar. M., .Stroyizdat, 1978, p. 23, fig. 15. Fig.e s f s 0t / .ff fug, 10