RU220490U1 - Precast concrete foundation - Google Patents

Abstract

The utility model relates to foundation structures and can be used both in the construction of tanks made of fiberglass and metal, and in the installation of block-modular buildings and structures. The technical result is to increase the reliability of a prefabricated reinforced concrete foundation by placing prefabricated support slabs-crossbars and connecting slabs made of steel-reinforced concrete with embedded parts and with optimal dimensions, laying support slabs-crossbars in two rows in a horizontal plane, and connecting them, in that same plane and at right angles to the laying line and in the center of the crossbar slabs, with connecting slabs. The technical result is achieved by the fact that the prefabricated reinforced concrete foundation includes support slabs made in the form of reinforced concrete blocks with holes and connecting slabs placed between them. In this case, the support plates-crossbars and connecting slabs are made of concrete reinforced with steel reinforcement with embedded parts, in addition, the support plates-crossbars are made in the form of a rectangular parallelepiped with a ratio of length L, width N and height H equal to L:N:H=3 :1:0.4. Moreover, on one of the sides of the crossbar plate from below there is a protrusion with a width b equal to 0.2 N. Each crossbar plate is equipped with two rectangular slots with the ratio of their length m and width d equal to m: d = 2.7: l, and location along the length of the slab along the horizontal axis, equal to S and between them F = 2S. Moreover, the inner surface of the slots is made in the form of a wedge-shaped transition with angles of inclination to the sides - 3°. Along the edges of the upper edge of the crossbar slab, eight square-shaped embedded parts with side dimensions C = 0.12 N are evenly located, as well as four recesses with dimensions Q = 2w, and the recesses are equipped with slings in the form of metal loops. Two embedded parts of the same dimensions are located on the side of the ledge of the crossbar plate. To form a prefabricated foundation, crossbar slabs are connected to each other in a chain in an amount depending on the required length of the foundation and placed in two rows in a horizontal plane, and between them, at right angles to the line of laying the crossbar slabs, there are connecting slabs. The latter are also made in the form of rectangular parallelepipeds with a ratio of length L, width N and height H equal to L:N:H=2:1:0.4. The connecting plates on their two end sides are equipped with projections of width b=0.2N from above. Along the edges of their upper faces there are four embedded parts and in the center there are two recesses with a metal loop.

Description

The utility model relates to foundation structures and can be used both in the construction of underground or above-ground tanks made of fiberglass and metal, and in the installation of block-modular buildings and structures.

Known is the “Slab foundation for a tank”, consisting of a solid reinforced concrete slab and a compensating gasket of variable thickness made of easily compressible material between the slab and the soil foundation in the peripheral zone, characterized in that settlements and deflections of the foundation slab are leveled by reducing the rigidity of the soil foundation by laying damping gaskets calculated thickness in peripheral zones (RF Patent for invention No. 2655457, IPC: E02D 27/38; published on May 28, 2018).

The well-known “Shallow slab-ribbed foundation” contains foundation ribs buried in the ground along the power axes of the building, a thin solid slab in the span zone and a damping gasket between the slab and the soil base, which is made of a highly compressible slab material, the thickness of which is selected from the transfer conditions onto the foundation soil through the foundation ribs of pressure, ensuring the settlement of these ribs by an amount equal to the thickness of the damping pad and corresponding to the design resistance of the said soil, with exhaustion of the compression of the material of the damping pad, it is possible to compress it with the formation of a single foundation and a compaction zone underneath it in the strong surface layers of the soil with redistribution of its thrust force from the span of the foundation to its ribs (RF Patent for invention No. 2561441, IPC: E02D 27/00; published on August 27, 2015).

1. Strip foundation, including a base slab made of prefabricated base slabs, characterized in that the prefabricated slabs are installed at an angle of 30-60° to the direction of the longitudinal axis of the foundation.

2. Strip foundation according to claim 1, characterized in that grooves for reinforcement are provided at the ends of the base slabs and along the sides along the length of the transverse dimension of the slab, and longitudinal V-shaped grooves are made along the large sides of the slabs, and on the other side there are V-shaped protrusions.

3. Strip foundation according to claim 1, characterized in that the grooves for the reinforcement are made in the form of an inverted trapezoid in cross section (RF Patent for PM No. 107188, IPC: E02D 27/00; published on 08/10/2011).

Known is a “Castle prefabricated strip foundation, including a base plate and rows of foundation blocks placed on it, characterized in that the base plate has a front inclined and butted surface, an upper rib for groove fastening into the lock of the overlying block; foundation blocks have vertical and horizontal grooves protruding beyond the edges of the bed and spoon surfaces by 1/3 of the width; in this case, the last row of the strip foundation is made of a block having a flat upper horizontal surface for supporting wall materials during the construction of overlying walls (RF Patent for invention No. 2477770, IPC: E02D 27/00, published 06/10/2009).

Known is a “Strip reinforced concrete foundation containing a concrete body, a longitudinal rod working, transverse rod steel reinforcement in the form of clamps installed in the span of the structure at the height of the reinforcement with a step corresponding to the design pitch of the cracks, and U-shaped reinforced elements reinforcing the corners, combined with longitudinal reinforcement, characterized in that the longitudinal working rod, transverse rod steel reinforcement in the form of clamps and U-shaped reinforcing elements at the corners are made with an ellipsoidal cross-section, the long axis of the reinforcement ellipse is combined with the maximum loads on the strip foundation, for longitudinal rod working , transverse vertical and horizontal reinforcement and U-shaped reinforcement elements reinforcing the corners (RF Patent for invention No. 2716533, IPC: E02D 27/00; published 03/12/2020).

The closest technical solution is a “Prefabricated reinforced concrete foundation, including supporting cross-shaped elements made in the form of reinforced concrete blocks with holes and placed at the intersection of internal and external walls and columns, piece elements placed between them and pre-stressed reinforcement passed into the holes of the supporting cross-shaped elements , characterized in that the supporting cross-shaped elements are made in the form of two semi-arches united by intersecting beam-ribs, and the piece elements are additionally equipped with keys and holes through which prestressed reinforcement is passed, while the prestressed reinforcement is made in the form of reinforcing ropes placed in a special shell, and the piece elements are connected by means of a key connection and combined with each other and with supporting cross-shaped elements by prestressed reinforcement with tension on hardened concrete (RF Patent for PM No. 83519, IPC: E02D 27/00, published 06/10/2009).

The purpose of the utility model is to construct an easily erectable foundation for tanks and block-modular structures under any weather and geological conditions.

The technical result is to increase the reliability of a prefabricated reinforced concrete foundation by placing prefabricated support slabs-crossbars and connecting slabs made of steel-reinforced concrete with embedded parts and with optimal dimensions, laying support slabs-crossbars in two rows in a horizontal plane, and connecting them, in that same plane and at right angles to the laying line and in the center of the crossbar slabs, with connecting slabs.

The technical result is achieved by the fact that the prefabricated reinforced concrete foundation includes support slabs made in the form of reinforced concrete blocks with holes and connecting slabs placed between them. In this case, the support plates-crossbars and connecting slabs are made of concrete reinforced with steel reinforcement with embedded parts, in addition, the support plates-crossbars are made in the form of a rectangular parallelepiped with a ratio of length L, width N and height H equal to L:N:H=3: 1:0.4. Moreover, on one of the sides of the crossbar plate from below there is a protrusion with a width b equal to 0.2 N. Each crossbar plate is equipped with two rectangular slots with a ratio of their length m and width d equal to m: d = 2.7: 1, and location along the length of the slab along the horizontal axis, equal to S and between them F=2S. Moreover, the inner surface of the slots is made in the form of a wedge-shaped transition with angles of inclination to the sides - 3°. Along the edges of the upper edge of the crossbar slab, eight square-shaped embedded parts with side dimensions C = 0.12 N are evenly located, as well as four recesses with dimensions Q = 2w, and the recesses are equipped with slings in the form of metal loops. Two embedded parts of the same dimensions are located on the side of the ledge of the crossbar plate. In this case, to form a prefabricated foundation, crossbar slabs are connected to each other in a chain in an amount depending on the required length of the foundation and placed in two rows in a horizontal plane, and between them, in the same plane and at right angles to the line of laying crossbar slabs and in the center of the latter, there are connecting plates. The latter are also made in the form of rectangular parallelepipeds, with a ratio of length L, width N and height H equal to L:N:H=2:1:0.4. The connecting plates on their two end sides are equipped with projections on top, also of width b=0.2N. Along the edges of their upper faces there are four embedded parts and in the center there are two recesses with a metal loop.

The prefabricated reinforced concrete foundation is illustrated by drawings in Figs 1 and 2.

fig. 1 - Prefabricated reinforced concrete foundation (drawing diagram of the foundation section);

fig. 2 - Prefabricated reinforced concrete foundation (general view of the assembled foundation)

1 - Crossbar plate body

2 - Bonding plate body

3 - Embedded parts

4 - Connection fittings

5 - Recesses with slings

6 - Rectangular slots

7 - Protrusions of the crossbar plate

8 - Protrusions of the binding plate

Examples of concrete implementation

The design of the prefabricated reinforced concrete foundation “FlowLiad” consists of crossbar slabs 1, connected to each other in a chain in an amount depending on the required length of the foundation and placed in two rows in a horizontal plane. The support plates-crossbars 1 are made in the form of a rectangular parallelepiped, the ratio of length L being, for example, 3000 mm, width N=1000 mm and height H-400 mm, and accordingly L:N:H=3:1:0.4. Between the slabs-transoms 1, in the same plane and at right angles to the line of laying the slabs-transoms in their center, there are connecting slabs 2, which are also made in the form of rectangular parallelepipeds, with a ratio of length L, width N and height H equal to L :N:H=2:1:0.4. Moreover, the connecting slabs 2, depending on the required width of the foundation, can be of different sizes, for example 3000 mm × 1000 mm × 400 mm or 1000 mm × 1000 mm × 400 mm. Along the edges of the upper edge of the crossbar slab, eight square-shaped embedded parts 3 with side dimensions of C = 120 mm, respectively, C = 0.12 N are evenly located. Along the edges of the upper edge of the crossbar slab 1, eight square-shaped embedded parts 3 with side dimensions are located C = 0.12 N. Two embedded parts 3 of the same dimensions are located on the side of the protrusion 7 of the crossbar slab 1. The embedded parts 3 located at the junction of the crossbar slabs 1 with the connecting slabs 2 are equipped with connecting fittings 4, Crossbar slabs 1 and the connecting plates 2 are equipped with recesses 5 with dimensions length Q=200 mm and width equal to depth w=100 mm, and accordingly w=2Q, while the recesses 5 are equipped with slings in the form of metal loops. The crossbar plate 1 is equipped with two rectangular slots 6 with a length t-800 mm and a width d=300 mm, a ratio m:d=2.7:1, respectively, and an arrangement along the length of the plate L-3000 mm, equal to S=350 mm and between them F=700 mm, respectively, the ratio F=2S. The inner surface of the slots is made in the form of a wedge-shaped transition with an inclination angle of 3° to the side. All crossbar slabs on one side along the entire length from below are equipped with a protrusion 7 with a width of b = 200 mm, equal to 0.2N, and the connecting plates 2 on their two side sides along the length from above are equipped with protrusions 8 with a width of b = 0.2N, and Along the edges of their upper faces there are four embedded parts 3 and in the center there are two recesses 5 with a metal loop.

The “Prefabricated reinforced concrete foundation” offered as a useful model has increased reliability and allows you to easily and quickly build foundations for tanks and block-modular structures under any weather and geological conditions.

Claims (1)

A prefabricated reinforced concrete foundation, including support slabs made in the form of reinforced concrete blocks with holes and connecting elements placed between them, characterized in that the support slabs-transoms and connecting slabs are made of concrete reinforced with steel reinforcement with embedded parts, while the support slabs-transoms are made in in the form of a rectangular parallelepiped with a ratio of length L, width N and height H equal to L:N:H=3:1:0.4, and on one side of the crossbar plate from below there is a protrusion of width b equal to 0.2 N, except In addition, each slab-transom is equipped with two rectangular slots with a ratio of their length m and width d equal to m: d = 2.7: l, and an arrangement along the length of the slab along the horizontal axis equal to S and between them F = 2S, and the internal surface of the slots is made in the form of a wedge-shaped transition with angles of inclination to the sides - 3°, and along the edges of the upper edge of the crossbar plate, eight square-shaped embedded parts with side dimensions C = 0.12 N are evenly located, as well as four recesses with dimensions Q = 2w, while the recesses are equipped with slings in the form of metal loops, in addition, two embedded parts of the same dimensions are located on the side of the protrusion of the crossbar slab, while to form a prefabricated foundation, the crossbar slabs are connected to each other in a chain in an amount depending from the required length of the foundation and are placed in two rows in a horizontal plane, and between them, in the same plane and at right angles to the line of laying the crossbar slabs and in the center of the latter, there are connecting slabs, which are also made in the form of rectangular parallelepipeds, with the ratio length L, width N and height H, equal to L:N:H=2:1:0.4, in addition, the connecting plates on their two end sides are equipped with protrusions also with a width b=0.2N, and at the edges of their upper faces There are four embedded parts and two recesses with slings in the form of metal loops in the center.