EA006820B1 - Prefabricard monolithic reinforced concrete frame of mult-storey building - Google Patents

Abstract

The invention relates to construction industry, in particular, to reinforced-concrete frames of different purpose and number of storeys being constructed or reconstructed in different regions, including seismic, using production of industrialized house-building complexes. The technical result – safe of labour and material costs, providing full use of traditional cassette unit of vertical forming for production of prefabricated frames thus providing transfer to mass construction of multistorey apartment and social-purpose buildings of open architecture-construction system with up-to-date consumption properties. Building frame is constructed of columns 1, prefabricated flat plates 2 of a traditional cassette production. The reinforced concrete plates 2 in each cell of frame flouring disk are connected in pairs into an integral plate by a rigid grouting joint 5 in which projections 6 from reinforcement 7 made on one side of each plate are arranged overlapped. In frame collar beams 3,4 are made from monolithic reinforced concrete. Prefabricated plates 2 connected in one plate rest upon lower shelves of collar beam 3,4 over the perimeter of each cell with tight adjoin of side edges by upper shelves. Plates 2 are connected by rigid ties to monolithic collar beams atop the perimeter of each cell. Wherein, the rigid ties of plates formed by prefabricated plates 2 with monolithic collar beams atop the perimeter of each cell can be made in the form of discrete welding connections of reinforcing bars or steel cover plates fixed to embedded parts of prefabricated plates and monolithic collar beams. The collar beams 3 and 4 are rigidly connected therebetween and with grouting joints 5 and made as an integral piece. The monolithic collar beams 3 and 4 are rigidly connected in cell's corners over the whole length and width of the building into a flat multispan frame arranged in the plane of each flooring. Above prefabricated plates 2 in each frame cell there can be arranged a monolithic reinforced concrete plate 13 made conjointly with collar beams 3, 4 and grouting joints 5 and provided atop with reinforcement in the form of reinforcement mesh anchored into collar beams at ends and rigidly connecting atop prefabricated plates 2 with monolithic collar beams 3 and 4. Upper surface of prefabricated plates 2 perpendicular to grouting joint 5 can be provided with alternating combs and grooves, and the upper monolithic plate is provided with combs arranged in grooves of the prefabricated plate 2. Monolithic plate 13 in each cell can be made thickened relative to lower prefabricated plate 2 and provided along grouting joint 5 with nonremovable blockouts, forming internal cavities 17 in monolithic plate 13. Collar beams 3 can be made two-layered along the ends of prefabricated plates 2, including from bottom prefabricated linear elements connected to the upper monolithic layer by projections upwards of reinforcement frame 21 of collar beam 3.

Description

The invention relates to the field of construction, in particular to the reinforced concrete frames of buildings of various purposes and heights constructed or reconstructed in various geographic regions, including seismic, with maximum use of products of enterprises of industrial housing.

The frame of multi-storey buildings is known, including reinforced concrete columns with holes, prefabricated pre-tensioned crossbars and floor slabs with gaps between their ends, resting on the crossbars of the plates are made with inclined end surfaces, and the gaps between the ends of the plates and the holes in the columns are monolithic with release of working reinforcement from the ends of the plates [1].

The frame is easy to erect. However, its use creates a rather rigid planning structure of the house, since the pitch of the columns in this frame must be maintained uniform and regular throughout the house due to the presence of prefabricated elements of crossbars, on which the prefabricated plates are supported. In addition, the prefabricated elements of the crossbars that project downwardly exclude free planning solutions or require the installation of suspended ceilings. For this reason, the design of the frame is not economical enough and does not allow to fully implement the required variety of buildings.

Known prefabricated monolithic frame, including prefabricated reinforced concrete columns with holes and floor slabs, supported by two opposite ends, made with a negative slope, monolithic between them prefabricated joints, forming embedded in the columns crossbars. The crossbars are made with the upper through longitudinal reinforcement, passed through the holes of the columns, and from the bottom, wound up in the blind sockets of the columns. Holes and sockets in columns are monolithic, along with girths [2].

The known frame is relatively simple in construction, it includes prefabricated flat plates of traditional cassette production of house-building factories, and the volume of solid concrete is negligible. However, the known frame is not sufficiently reliable, since the support of the prefabricated plates on the bearing crossbars with inclined ends, even with their high-precision manufacturing, causes a wedging effect and the likelihood of the frame frames moving apart from the supporting crossbars. In this case, there is a danger of failure of the first individual plates, unrelated to the bolts, and then the chain destruction of the entire frame of the building. Even with real small and permissible deviations in the accuracy of the manufacture of precast plates, this situation is almost inevitable.

Closest to the proposed technical solution is a frame of a multi-storey building, adopted for the prototype and includes columns with cutouts and exposing their longitudinal reinforcement in the level of floors, prefabricated floor plates equipped with end faces with discrete releases of reinforcement, and along the side faces with longitudinal grooves and inclined edges, and monolithic areas, made in the form of reinforced concrete beams, combining precast slabs and forming with them a single overlap disk, rigidly connected with Olona [3].

The frame provides for the use of prefabricated flat plates of traditional cassette production of house-building plants, it is characterized by high structural reliability.

The disadvantage of the frame is the complexity of manufacturing prefabricated plates with the release of working reinforcement at both ends in the conditions of cassette production, as well as a complex assembly combining the releases of the working reinforcement of the plates with the working reinforcement of girders. This causes an increase in labor costs in the manufacture of precast plates and in the construction of the frame, as well as increased consumption of reinforcing steel for its construction.

The present invention solves the problem of simplifying the design of the frame and reducing labor costs in the manufacture of precast slabs in traditional cassette installations house-building plants (DSC), and in the production of works on a building site, as well as reducing metal consumption. In addition, providing high structural reliability of the frame, the technical solution allows to significantly expand the planning possibilities of the building. To do this, in the proposed frame, the overlapping discs are flat with the possibility of increasing the pitch size of the columns in the plan, and the grid of columns can be irregular, determined by the planning needs.

The solution of the task is achieved by the fact that in the precast-monolithic reinforced concrete frame of a multi-storey building, including reinforced concrete columns with cutouts and exposure of their longitudinal reinforcement in the floor levels, prefabricated floor slabs equipped with discrete releases of the reinforcement on the frontal sides, and along the lateral faces made with longitudinal grooves and inclined edges, and monolithic areas, made in the form of reinforced concrete beams, connecting the prefabricated plates and forming together with them in the form of cells, a single crossover disk ytiya rigidly connected to the columns, each cell frame, bounded on all sides by a monolithic reinforced concrete girders, prefabricated plates fixedly connected in pairs with each other into a single plate by means of releases of operating valves disposed in overlapping seam grouting between connected pairs of prefabricated slabs. Each formed plate on the outer lateral sides is made with an undercut, provided with an upper shelf projecting to the side, and supported by this upper shelf is an undercut on the lower shelves bordering monolithic reinforced concrete beams with a tight junction of the side faces of the crossbars and side plates. On top of each plate along the contour of each cell is equipped with rigid

- 1 006820 connections with monolithic bolts, and monolithic bolts for the entire length of the temperature section and the width of the building, in turn, are rigidly connected at the corners of the cells into a single flat multi-span frame.

Each plate formed by precast plates on top can be rigidly connected along the contour of the cell with monolithic bolts by means of discrete welded joints of reinforcement or steel plates attached to embedded parts of precast plates and monolithic bolts.

A monolithic reinforced concrete slab, made integral with monolithic reinforced concrete bolts and monolithic joints, reinforced in the form of a grid with working reinforcement anchored at the ends in monolithic bolts, and rigidly combining the slabs with monolithic ribs on top, can be placed in each cell of the frame above the precast slabs. .

Prefab slabs in each cell of the frame can be provided on the upper surface along the normal to the joint grout with alternating ridges and grooves, the upper monolithic slab is equipped in this case with ridges placed in the slots of the precast slab.

In each cell of the frame, the upper monolithic slab can be made thicker relative to the lower precast slab and can be equipped along the joint with monoliths with non-removable hollow cores, which form internal voids in the monolithic slab.

The crossbars located along the ends of the prefabricated plates can be made of two-layer, including the bottom of the prefabricated linear elements, combined with the upper monolithic layer by means of releases to the top of the rebar frame.

Carrying out the frame in the proposed form with a pair of rigid combination of prefabricated plates in each cell, bounded on all sides by monolithic reinforced concrete bolts, into a single plate by means of releases of their working reinforcement placed overlap in the joint of monolithing between the combined pair of prefabricated plates, allows us to solve several important tasks at the same time. In this case, the release of working valves are required only on one side of each precast plate. They are simple to perform from the top open side of the precast slab when it is molded in a traditional vertical cassette. The device of such releases of working valves does not require any additional costs. In this case, the two slabs are reliably joined together by a hard monolithing seam located between them by means of fittings, and the monolithic concrete of the monolithic seam has a high quality of adhesion to the rough side face of the prefabricated slabs, while making them a new one.

Performing each plate formed by precast plates, with a trimmer fitted with an upper flange protruding along its entire perimeter, makes it possible to evenly support this plate along its contour to the lower shelves bordering the plate monolithic bolts with tight contact to their side faces and ensure efficient joint operation under the load of precast plates and monolithic bolts. At the same time, each plate supported along the contour, when making joints for homonolishing prefabricated slabs with monolithic bolts, can additionally also ensure the integrity of the entire overlap disk under any possible impacts and overload loads even without additional measures. In addition, the tight contact of the side edges of the plate contour and monolithic bolts allows to realize unloading strut forces in the plates and due to this, the steel consumption for both reinforcement of the plates and monolithic bolts is reduced. In addition, the presence of unloading spacers created by these conditions, and taking them into account when calculating the carcass, allows to increase the cell size and, accordingly, the pitch of the carcass columns in the plan without overspending reinforcing steel. This allows you to expand the planning possibilities of buildings.

The device along the perimeter of each cell along the top of the plates of rigid connections with monolithic bolts allows for additional clamping of precast plates in monolithic bolts and due to this, noticeably reduce the amount of bending and torsion moments in the middle sections of each cell of the frame and create a more uniform stress-strain state in all sections of the disk overlap, reduce the deflections in its sections between the columns.

Performing monolithic bolts over the entire length of the temperature sections and the width of the building rigidly connected at the corners of the cells into a single flat multi-span frame placed in the plane of each overlap ensures not only the continuity of their work under the influence of the load, but also great opportunities for its redistribution to adjacent less stressed spans. In this case, an additional effect is also achieved, which consists in the fact that monolithic girders form a cross network that completely eliminates the probability of chain destruction of the framework, including during seismic and similar dynamic effects. In addition, the network of crossbars created in the overlap disk allows for flat discs of floors and the irregular structure of the frame columns, since the position of the columns can be shifted along any crossbar from the node of their intersection. It also expands the possibilities of planning solutions, since the framework simply adapts to almost any architectural and planning solutions of buildings.

Performing the combination of each plate formed by precast plates on top with monolithic bolts by means of discrete welded joints attached to embedded parts of the connecting elements, ensures a high rate and ease of work. This also allows

- 2 006820 It is possible to use traditional cassette production for the manufacture of precast plates at no additional cost.

Placing a monolithic reinforced concrete slab, built together with monolithic bolts and homogeneous joints, over the prefab slabs in each cell, significantly expands the consumer qualities of the skeleton and allows significantly (by 30-50%) to increase the height of the overlapping disk section and, accordingly, overlapping spans and grid sizes of columns without overrun of reinforcing steel. A significant increase in the stiffness of the cross sections of the frame of the frame also allows you to increase the length of the crossbar consoles for the outer rows of columns to accommodate balconies, loggias, bay windows, etc.

The implementation of precast plates in each cell with alternating ridges and grooves on the upper surface, and the upper monolithic slab with ridges placed in the grooves of the precast plate, allows you to develop the contact area between these plates and ensure their effective joint operation at any load level possible during operation. If a monolithic slab is equipped with an upper grid with working reinforcement, anchored in monolithic bolts, and a tongue-and-groove joint of the composite and monolithic plates, the reliability of the overlapping drive under load and its load bearing capacity increase significantly, since the upper monolithic and lower assembly plates work together as a single bendable design and eliminated the danger of its separation by contact of the plates.

Placing in each cell along the joints of monolithing in the upper monolithic slab core and making it thicker relative to the lower precast plates allows a 1.5-1.6 times reduction in the mass of overlap and by reducing the magnitude of the permanent load, reduce the consumption of steel for the reinforcement of the floors, as well as provide a significant increase in span spans in the direction of both rows of columns. This increases the efficiency of the frame and allows you to further expand its planning capabilities.

The implementation of the bolts located along the ends of the prefabricated plates and which are bearing, two-layer, including prefabricated linear elements, combined with the upper monolithic layer by means of the reinforcement cage of the transom to the top, also makes it possible to increase the size of the spans blocked by this crossbar or to reduce the consumption of steel for their reinforcement.

These advantages in their amount mean that the use of the proposed frame with the products of house-building factories, in essence, means transferring them, at almost no additional cost, with the construction of outdated houses with a rigid structural scheme for the construction of houses of an open architectural and construction system with modern consumer qualities of planning, comfort at the minimum cost of construction and maintenance.

Comparative analysis with the prototype allows us to conclude that the claimed technical solution differs from the prototype with new features: (1) in each cell of the framework bounded on all sides by monolithic reinforced concrete bolts, prefabricated plates are pairwise rigidly interconnected into a single plate by means of their working reinforcement placed overlapping in the joint seam between the pair of prefabricated plates to be joined; (2) each plate formed on the outer sides is made with an undercut, provided with an upper shelf projecting to the side; (3) the plate is supported by the top shelf trimming on the lower shelves bordering the monolithic reinforced concrete beams with a tight junction of their side faces; (4) the grouting joints of prefabricated slabs and monolithic bolts are made in one piece; (5) on top of the perimeter of each cell, the plates are provided with rigid connections with monolithic bolts; (6) monolithic bolts for the entire length and width of the building, in turn, are rigidly connected at the corners of the cells into a single flat multi-span frame located in the plane of overlap; (7) each plate formed by precast plates is rigidly connected on top of the cell contour with monolithic reinforced concrete beams by means of discrete welded joints attached to embedded parts of precast plates and monolithic crossbars; (8) a monolithic reinforced concrete slab is placed in each cell of the skeleton above the precast slabs; it is made integral with the crossbars and the joints of the homonolation and rigidly unites the precast slabs on top of the monolithic crossbars, and on top contains reinforcement in the form of a grid with working reinforcement anchored at the ends in monolithic crossbars; (9) prefabricated plates on the upper surface along the normal to the seam of monolithing provided with alternating ridges and grooves; (10) the upper monolithic slab is lowered with ridges placed in the grooves of the precast slab; (11) in each cell, the upper monolithic slab is made thicker relative to the precast slab and provided with the homonolation along the seam with non-removable hollow cores, which form internal voids in the monolithic slab; (12) The girders located along the ends of the prefabricated plates are made of two-layer, including the bottom of the prefabricated linear elements, combined with the upper monolithic layer by means of releases to the top of the rebar cage.

In general, the proposed technical solution, according to the authors, meets the criterion of novelty, since the above listed features are not known in aggregate, and the achieved technical results of this solution ensure the achievement of the task, exceed the known ones and provide a super-total result when implementing the proposed technical solution. This is by

- 3 006820 allows to consider the proposed technical solution to the relevant requirements of the inventive step.

The essence of the proposed technical solution is illustrated by drawings. FIG. 1 shows the proposed frame, fragment, type in the plan; in fig. 2 is the same, section A-A in FIG. one; in fig. 3 is the same, section A-A in FIG. 1 at the device of the upper monolithic reinforced concrete slab with a comb-like connection with a precast slab; in fig. 4 is the same, section A-A in FIG. 1 with a thickened monolithic plate and the device in it internal voids; in fig. 5 is the same, section A-A in FIG. 1, with a double layer girder; in fig. 6 is the same, section BB in FIG. 1 at the interface of prefabricated slabs along the seam of monolithing; in fig. 7 is the same, section BB in FIG. 1 with the device of the upper monolithic reinforced concrete slab with a comb-like interface with a precast slab; in fig. 8 is the same, section BB in FIG. 1 with a thickened upper monolithic slab with voids; in fig. 9 shows the proposed frame, node A in FIG. 1 shows an example of mating the overlapping disc with an angular column; in fig. 10 is the same, node B in FIG. 1 shows an example of mating the overlapping disk with the middle column; in fig. 11 - precast disk slab; in fig. 12 - modular refined disk slab; in fig. 13 is a precast disk slab with alternating grooves and ridges on the upper surface; in fig. 14 - the construction of the proposed frame with the device disk overlap on supporting platforms; in fig. 15 is the same as in FIG. 14, section BB; in fig. 16 is a diagram of precast plates in a cassette installation; in fig. 17 is the same as in FIG. 16 in the manufacture of precast plates, provided on the upper edge of alternating grooves and ridges; in fig. 18 is a diagram of a conventional cassette installation for the manufacture of flat plates of solid section.

The proposed frame (Fig. 1-13) includes columns 1, prefabricated flat plates 2 of solid section. In the alignments of the columns 1 in mutually perpendicular directions there are continuous monolithic reinforced concrete carriers 3 and 4 connected crossbars, which form closed cells in the plane of the overlapping disk. In each cell, prefabricated plates 2 are placed in pairs and joined together in a single plate with a seam 5 of monolithic.

In the joints of monolithing 5 overlapping are the outlets 6 of the working armature 7 prefabricated plates 2 rigidly merging in pairs into a single plate. The plates 2 of each plate are contoured along the contour, fitted with an upper shelf projecting to the side 8. The shelf is supported by this shelf on the lower shelves 9 bordering crossbars 3 and 4. At the same time, thanks to the execution of the girders 3 and 4 of monolithic reinforced concrete, close contact of the side faces of the plates 2 plates with the adjacent girders 3 and 4 is ensured. e piece 10, and the same inserts 11 may be placed on the upper surface of monolithic crossbars 3 and 4 when concreting. Through rebar shorter 12, welded to the mortgage parts 10 and 11, prefabricated plates 2 on top are rigidly connected with crossbars 3 and 4 in the form of discrete ties distributed along the perimeter of each cell of the overlap disk. Additional connection of the prefabricated plates 2 with bolts 3 is carried out by the fact that the bolts 3 are made integral with the seams 5 of monolithic and rigidly connected to each other.

Above the precast plates 2 can be placed monolithic reinforced concrete plate 13, made at the same time with the crossbars 3 and 4 and the seams 5 of monolithic. This plate 13 within each cell of the frame contains reinforcing mesh 14 with working reinforcement, anchored ends in bolts 3 and 4. Monolithic reinforced concrete plate 13 provides rigid combination of precast plates 2 on top with crossbars 3 and 4. To improve adhesion of concrete precast plate 2 with monolithic With a slab 13, a precast slab on the upper surface can be made with alternating ridges 15 and grooves 16. With the device of a monolithic slab 13 under such a slab 2 used as fixed formwork, the concrete mixture of the slab 13 fills in the grooves 16 with formation in which the ridges of the upper plate. In this case, due to the development of the contact area, the resistance of the composite bending plate to the action of transverse forces increases and the danger of plate separation under any possible loads is eliminated.

The monolithic reinforced concrete slab 13 can be made thickened relative to the precast slab 2 located above it and contain non-removable hollow cores 17, which form internal voids in the slab 13. Void forming 17 can be made cylindrical, spherical or other streamlined shape in the form of hollow bodies of waterproof material, such as recycled polyethylene. To ensure the joint operation of the precast plate 2 and the monolithic plate 13 in this case, on the upper surface of the plate 2 are embedded parts 18, to which, prior to the installation of non-removable hollow cores 17, a lightweight reinforcement cage 19 is attached to the welding. This wire frame 19 ensures joint operation under the load of the precast 2 and monolithic 13 slabs and, in addition, together with the upper grid 14 fixes the position of the hollow cores 17, preventing their ascent when laying monolithic concrete slab 13.

Bearing beams 3, located along the ends of the prefabricated plates 2, can be made of two-layer. In this case, the precast concrete element forming the lower shelf 20 is placed on the bottom, on which the prefabricated plates 2 can be supported with the ends. Reinforcement frame 21 is released from the prefabricated element 20, which unites the transom 3 into one unit. due to the development of the height of the section, it is essential to reduce the consumption of steel for its reinforcement and increase the size of the spans to be covered. Crossbar 3 of this design can

- 4 006820 to be successfully applied to public buildings with suspended ceilings, as well as to the extreme rows of columns of residential buildings, placing it in floor-supported exterior walls.

The proposed frame, being a frame-linkage system under a static scheme, under load, works as a single, multiple statically indeterminate multi-storey spatial structure. On each floor, the vertical load is directly perceived by the prefabricated rigid plates 2, which are rigidly joined in pairs by the seam, as a solid plate, supported within each frame cell along the contour, and redistribute it to the crossbars 3 and 4, and the crossbars 3 and 4 pass it to the columns 1. When This, under the action of the vertical load, thanks to the realized conditions for supporting the precast plates 2 on the crossbars 3 and 4, through the upper flange 8 and the seam 5 provides a uniform and uniform stress state in the frame elements, which creates conditions for achieving the maximum metal frame. In the design of the frame floors, as shown by tests, under the action of a load of any level up to the destructive, joint work of monolithic bolts 3 and 4 and precast plates 2, as well as precast plates 2 and monolithic plates 13 is ensured. In general, this also allowed for an increase in rigidity sections of floors to reduce their deflections. As a result, it became possible not only to reduce the consumption of steel for reinforcement, but also to ensure an increase in the length of the spans to be covered. So, with precast slabs 2 solid section 16 cm thick, the largest mesh size of the columns reaches 6.20 x 6.20 m, with a continuous two-layer precast monolithic slab, the effective mesh size of the columns can exceed 6.60 x 6.60 m, and with a monolithic slab 13 with hollow cores the effective size of the grid of columns can reach 7.20 x 7.20 m. Thus, the proposed framework allows for the implementation of almost any architectural and planning solution of a building. In addition, the implementation of monolithic bolts for the entire length and width of the building in the presence of their rigid connection with each other in the corners of the cells allows you to implement an irregular grid of columns 1. In this case, the position of columns 1 can be shifted from the corner of the cell along any of the crossbars 3 or 4 ( see Fig. 9 and 10) and occupy a position that is most appropriate for the adopted architectural and planning decisions at home.

When mating monolithic bolts 3 and 4 between each other and columns 1 is adopted, along with increasing the efficiency of the frame to the effect of vertical load, in combination with stiffness diaphragms (not indicated), the resistance to twisting and shear of the overlapping disks of the proposed frame to the effect of the horizontal load increases, torsion significantly increases the rigidity of the entire frame.

Thus, in comparison with the known, differing application of only discrete links, in the proposed framework, the redistribution of forces between the elements of the framework is most fully realized, the danger of chain destruction is completely excluded. Compared with the prototype [3], by increasing the size of the grid of columns, the planning capabilities have been significantly expanded. The frame is fully used products cassette production DSC.

The proposed frame is erected in the following sequence. First, install the columns, then in the columns of columns 1 (Fig. 14, 15) mount supporting telescopic devices 22 with formwork 23 for monolithic bolts 3 and 4. Mount the reinforcement plates of supporting bolts 22 and then assemble the prefabricated plates on the formwork 23 of supporting devices 22 2. Along the seams of monolithing under the releases of the reinforcement hang the formwork seams flush with the bottom surface of the plates 2. Then along the seams of monolithing on the reinforcement releases separate rods are laid and fixed. After all the reinforcement has been laid, simultaneous concreting of girders 3 and 4, joint grouting 5 and filling of the openings in columns 1 to their entire height at the level of overlap are performed. After a set of monolithic concrete of the required strength, welds of the joints 12 are made using the embedded parts 10 and 11. Then the supporting devices 22 and the formwork are dismantled and rearranged to the finished floor for the next overlap device. When constructing a monolithic reinforced concrete slab 13 above the precast plates 2, the concreting of the slab 13 is performed simultaneously with the concreting of the girders 3, 4 of the seam 5 and through openings (not indicated) in the columns 1. At the same time, on the scaffolding 22 and 23, the prefabricated plates 2 are pre-positioned with alternating slots 16 and the ridges 15 up or in their absence, the slab 2 is positioned upwards with embedded parts 18 and a wire reinforcement cage 19 is fixed to them for welding, in which non-removable core-forming elements 17 are fixed. After setting the required strength, monolithic the concrete elements 3, 4, 5, 13, the supporting devices 22 and 23 are removed from under the overlap, and the overlap is suitable for loading it with the technological load arising (from the supporting devices 22, 23, the material of the external walls and partitions, etc.) with erecting the next floor of the building.

The presented technology of the construction of the frame is extremely simple in execution, it complements the advantages of its design, provides all-weather capability and a high rate of construction. The manufacture of precast plates 2 for the frame is produced in traditional cassette installations of vertical formation (Fig. 16-18). For education in plates 2 trim with a protruding shelf 8 in each cavity 24 of the cartridge formed by formwork shields 25 formwork, along the contour (bottom and vertical ends) secure the liner 26. Working reinforcement 7 plates 2 to concreting placed in cavities 24 with outlets 6 upwards. For the device alternating grooves 16 and ridges 15 in the cavity 24 of the cassette is mounted forming the liner 27. For the manufacture of prefabricated elements (plates 2, columns 1), as well as for mono

- 5 006820 lithic elements of frame 3, 4, 5, 13 in BelNIIS developed special compositions of self-compacting gravity concrete mixes. These compositions make it possible to obtain prefabricated products with increased accuracy of geometric dimensions, as well as high-strength concrete for both precast and monolithic frame elements, with virtually no vibration. Accelerated strength of these concretes allows us to provide all-weather and high-speed construction of the proposed building frame with minimal energy consumption.

The proposed technical solution will be implemented during the construction of multi-storey buildings with the maximum use of traditional products of house-building factories, which, in general, will ensure their transfer to the construction of modern residential and public buildings of open architectural and construction systems.

Information sources

1. RF patent № 2184816, cl. EV 1/20, BI No. 19, 03.22.2001.

2. RF patent number 2087633, cl. Е04В 1/18, BI No. 23, 08.20.1997.

3. RF patent № 2134751, cl. Е04В 1/18, Е04Н 9/02, BI No. 23, 08/20/1999.

Claims (6)

CLAIM 1. Prefabricated monolithic reinforced concrete frame of a multi-storey building, including reinforced concrete columns with cutouts and exposing their longitudinal reinforcement at the floor levels, prefabricated floor slabs equipped with discrete outlets of working reinforcement at the end sides, and made along longitudinal sides with longitudinal grooves and inclined faces, and monolithic sections made in the form of reinforced concrete crossbars connecting prefabricated slabs and forming together with them in the form of cells a single disk of overlap, rigidly connected with columns, distinguishing the fact that in each cell of the skeleton disk of the frame, bounded on all sides by monolithic reinforced concrete crossbars, the precast plates are rigidly interconnected in pairs in a single plate by means of the releases of their working fittings, which are overlapped in the mono-seam between each joined pair of precast plates, each formed plate on the outer lateral sides, it is trimmed with a top shelf protruding to the sides and the upper shelf of the trim is supported on the lower shelves of the bordering monolithic reinforced concrete gels with tight adjacency of their side faces, monolithic seams of prefabricated plates and monolithic crossbars are made in one piece, on top of the perimeter of each cell plates are provided with rigid bonds with monolithic crossbars, and monolithic crossbars for the entire length and width of the building, in turn, are rigidly connected along corners of the cells in a single flat multi-span frame placed in the plane of each floor. 2. The building frame according to claim 1, characterized in that the rigid bonds formed by the prefabricated plates of plates with monolithic crossbars on top of the perimeter of each cell are made in the form of discrete welded joints of reinforcing bars or steel plates attached to embedded parts of prefabricated plates and monolithic crossbars. 3. The building frame according to claim 1, characterized in that in each cell of the frame above the precast plates there is a monolithic reinforced concrete slab made integrally with crossbars and monolithic seams, provided with reinforcement in the form of a mesh with working reinforcement, anchored at the ends in monolithic crossbars, and rigidly combining prefabricated slabs with monolithic crossbars on top. 4. The building frame according to claims 1, 3, characterized in that the prefabricated slabs on the upper surface normal to the monolithic seam are provided with alternating ridges and grooves, and the upper monolithic slab is provided with lower ridges placed in the grooves of the prefabricated plate. 5. The building frame according to claims 1, 3, characterized in that the monolithic slab in each cell is made thickened relative to the lower prefabricated slab and is provided along with the monolithic seam with non-removable hollow formers with the formation of internal voids in the monolithic slab. 6. The building frame according to claims 1, 3, characterized in that the crossbars located along the ends of the prefabricated slabs are made of two-layer ones that include prefabricated linear elements from the bottom, combined with the upper monolithic layer by releasing upwards the reinforcement cage of the crossbar.