RU101455U1 - PREFABRICATED ROAD REINFORCED CONCRETE PLATE AND DESIGN OF ROAD COVERING WITH ITS APPLICATION - Google Patents

Abstract

 1. Prefabricated road reinforced concrete slab having longitudinal voids in the concrete body for tensioning the reinforcement, characterized in that it is made by continuous molding on long stands and prestressed by high-strength wire or ropes in the upper, lower and / or middle planes of the cross section of the slab, and to combine the slabs into a continuous roadway, in the slab along the entire length there are one or more cavities open in the upper part, in which are placed ropes strained onto concrete, fixed on ends of the collet by a washer-metallic conductors. ! 2. Precast reinforced concrete slab according to claim 1, characterized in that the combination of slabs in the roadway occurs due to the laying of slabs with a transverse overlap at half the slab width, for which the slabs are made of the main and additional (half) size in width, and the slab length it can be any and is limited only by the possibility of transportation and installation, which is carried out by a special capture of the cavity.

Description

The utility model relates to the field of construction, in particular to general-purpose pavements (roads, aerodrome stripes and any sites with high static and dynamic loads).

Known prefabricated road slabs, see, for example, the Handbook "Materials and products for the construction of roads", ed. N.V. Gorelysheva, Moscow, Transport, 1986, pp. 2553 ... 257, which are combined into a roadway with welded brackets, sheet piling elements with monolithing, or other methods described, for example, in BCH 197-91 “Instructions for the design of rigid road clothes ”, Moscow, 1992, Ch. "The design of pavements with prefabricated coatings", pp.2.21 ... 2.27. However, these known plates are metal-consuming, difficult to manufacture and assemble, and during operation, subsidence of the plates relative to each other is possible.

Known prefabricated road plates according to patents No. 94580 Е01С 3/00 and No. 2371536 Е01С 5/10, which have longitudinal voids in the concrete body for tensioning the reinforcement. Known plates have a number of disadvantages: prestressing reinforcement in longitudinal voids is protected only by the coating, which does not guarantee reliability and durability; during operation, subsidence of plates relative to each other is possible; plates are made in metal molds, which does not guarantee the accuracy of geometric dimensions; longitudinal voids in the concrete body are closed in the upper part, which creates difficulties in pulling the tensioned ropes.

The proposed reinforced concrete slab is made by continuous molding on long stands. Prestressing is performed by high-strength wire or ropes in the upper and lower planes of the cross section of the plate. To unite the slabs into a continuous roadway, the slab along the entire length has one or several cavities open in the upper part, for placing ropes strained onto concrete in them and then monolithing the cavities with a highly mobile, mainly concrete mixture, which does not need vibration and due to which the ropes guaranteed to be protected from corrosion. The ropes are pulled by a jack on concrete, mainly in the upper and lower planes of the cross-section of cylindrical cavities (but reinforcement is possible, for example, only in the middle, only in the lower, or only in the upper plane, depending on the purpose of the road surface and calculation) and are fixed at the ends with clamping collets through metal washers-conductors. Thus, in the cavity of the slabs, pre-stressed beams (for the length of the stand) are actually formed, which have a cross section equal to the section of the cavities and form a single unit with the array of slabs and the roadway. The combination of plates is carried out on a horizon in a stand of 20-40, or more plates, depending on the purpose of the roadway, terrain, etc. On the long ends of the slabs there is a groove on one side and a ridge on the other, due to which, when connected, the rigidity in the cross section of the roadway increases. Compression and expansion seams are formed at the joints of the stands, in the monolithic part of which are clamping collets and metal conductor washers, which protect them from corrosion.

The combination of the proposed plates in the roadway occurs due to the laying of plates with a transverse overlap half the width of the plate, due to which the roadway does not move in width and significantly increases the stiffness of the coating. Plates are made of the main and additional (half) size in width. The length of the plate can be any and is limited only by the possibility of transportation and installation. Installation of plates is carried out by a special grip on the cavity.

A utility model is illustrated in the drawings.

Figure 1 shows a perspective view of the main plate.

Figure 2 shows a perspective view of the additional plate, which is two times narrower than the main plate.

Figure 3 shows the road surface in plan, from which it can be seen that the main plates 1 (Figs. 3, 4 and 5) are mounted with a transverse overlap at half the width of the plate, and additional plates 2 (Figs. 3, 4 and 5) are laid through a row at the edges of the canvas. At the joints of stands 3 (FIG. 3), compression and expansion joints are formed with cast concrete.

The cross section along A-A (row with main and additional plates) is shown in Fig. 4, and the cross-section along BB (row with main plates) is shown in Fig. 5, where the ropes 4 stretched onto concrete are visible (Figs. 4 and 5 ), monolithic with a highly mobile mixture of cavity 5 (FIGS. 4 and 5) and plate reinforcement with high-strength wire 6 (FIGS. 4 and 5).

Figure 6 shows a perspective view of the pairing of plates with a transverse overlap at half the width of the pavement plate.

In Fig.7 and Fig.8 shows sections BB and GG, which depict the clamping collets 7 (Fig.7 and 8) and the metal washer-conductor 8 (Fig.7 and 8).

Figure 9 shows variants of the cross section of the cavities.

Claims (2)

1. Prefabricated road reinforced concrete slab having longitudinal voids in the concrete body for tensioning the reinforcement, characterized in that it is made by continuous molding on long stands and prestressed by high-strength wire or ropes in the upper, lower and / or middle planes of the cross section of the slab, and to combine the slabs into a continuous roadway, in the slab along the entire length there are one or more cavities open in the upper part, in which are placed ropes strained onto concrete, fixed on ends of the collet by a washer-metallic conductors. 2. Precast reinforced concrete slab according to claim 1, characterized in that the combination of slabs in the roadway occurs due to the laying of slabs with a transverse overlap at half the slab width, for which the slabs are made of the main and additional (half) size in width, and the slab length it can be any and is limited only by the possibility of transportation and installation, which is carried out by a special capture of the cavity.