DE102019118371A1 - Building board made of concrete with composite reinforcement - Google Patents

Abstract

The invention relates to a building board with reinforcement cage, with longitudinally stressed reinforcement, which are covered at the plate ends with volumetric rectangular spirals, vertical scaffolding assembly loops and concrete injections. The cage consists of an elliptical body, the longitudinal axis of which coincides with the maximum load on the building board. The values of the axes of the ellipse of the body of the composite reinforcement is chosen proportional to the calculated loads along the axis of the building board, the maximum load acting in the middle of the length of the longitudinal reinforcement.

Description

The invention relates to construction, and in particular to constructions of concrete building panels with composite reinforcement, e.g. Ceiling tiles.

A building board (patent RU No. 2026939 IPC E04C 2/06, published 20.01.1995). This building board consists of a reinforcement cage with longitudinal reinforcement and three-dimensional spirals that comprise this longitudinal reinforcement, and grouting concrete. The three-dimensional spiral is designed with spiral windings that have a trapezoidal profile in the cross-section of the building boards. The three-dimensional spiral is arranged at the ends and in the middle of the building board with the same number of turns. The reinforcement cage is provided with flat comb-shaped spirals at the end points of the building board. These spirals are inserted in the three-dimensional spirals in the transverse direction. This building board has a low strength criticized.

A device is known, namely a support made of concrete with composite reinforcement for overhead line masts (patent RU No. 178875 IPC E 04 H 12/12 published April 20, 2018, Patent Bulletin No. 11). This column includes the main concrete volume, prestressed load-bearing reinforcement, a spiral and assembly and installation eyelets. The spiral is attached to the load-bearing reinforcement at the column ends and at the places where the spiral slope changes. The load-bearing reinforcement is made of high-strength composite reinforcement. The composite reinforcement has an oval cross-sectional shape. The reinforcement is installed with the longer axis of the oval, which coincides with the long axis of the beam cross section. The known device has an insufficient strength of the building board.

The closest to the present invention is the building board (patent RU No. 2100540 IPC E04C 2/06, published December 27, 1997), which contains a reinforcement cage with longitudinal reinforcement, three-dimensional rectangular spirals, vertical scaffolding, mounting eyelets and grouting concrete. The three-dimensional rectangular spirals encompass the reinforcement on the end faces of the building board. The deficiency of this device is an insufficiently high strength of the building board.

With the present invention, a technical effect is brought about, namely the strength of the building board made of concrete with composite reinforcement is increased. The technical effect is achieved in a concrete building board with composite reinforcement. The building board consists of a reinforcement cage with a longitudinal reinforcement, three-dimensional rectangular spirals that enclose the reinforcement on the end faces of the building board, vertical scaffolding, mounting eyelets and grouting concrete. The longitudinal reinforcement is made of composite material and has an elliptical cross-section. The longer axis of the ellipse in cross section coincides with the maximum stresses on the building board. The axis sizes of the ellipse of the composite reinforcement bar are designed in proportion to the calculated stresses with respect to the axes of the building board in cross section in the middle of the length (on the half length).

The increase in the strength of the concrete building board with composite reinforcement is that with a change in the geometric shape of the reinforcement with the same surface and the same material, the section modulus increases in the direction of the longer axis of the ellipse. The longer axis of the ellipse is brought into line with the maximum stress on the building board. This means that the reliability of the construction increases compared to a round reinforcement (with a round cross-section).

The increase in the load-bearing capacity of the building board is also determined when an optimal size ratio of the larger axis of the ellipse to the smaller one is determined in the spatial positioning of the composite reinforcement when the building board is subjected to force.

1. 1 die Höchstbeanspruchung der Bauplatte aus Beton mit Verbundwerkstoff-Bewehrung und deren maximales Widerstandsmoment;
2. 2 den ellipsenförmigen Querschnitt des Bewehrungsstabs der beanspruchten Vorrichtung;
3. 3 den kreisförmigen Querschnitt des Bewehrungsstabs gemäß dem Prototyp;
4. 4 die längere Achse der Ellipse, die mit der Höchst-beanspruchung der Bewehrung bei deren räumlichen Positionierung zusammenfällt;
5. 5 die kürzere Achse der Ellipse, die mit der Höchstbeanspruchung der Bewehrung nicht zusammenfällt;
6. 6 die Achse des Kreises, die mit der Höchstbeanspruchung der Bewehrung zusammenfällt;
7. 7 ein Fragment der Bauplatte aus Beton mit Verbundwerkstoff-Bewehrung.

In the accompanying figure, the spatial positioning of the cross-section of the composite reinforcement bar according to the prototype and that of the claimed device in the building plate made of concrete with composite reinforcement is shown schematically. The reference symbols in the figure denote:

1. 1 the maximum load of the building board made of concrete with composite reinforcement and its maximum section modulus;
2. 2 shows the elliptical cross section of the reinforcing bar of the claimed device;
3. Figure 3 shows the circular cross section of the rebar according to the prototype;
4. 4 the longer axis of the ellipse, which coincides with the maximum stress of the reinforcement in its spatial positioning;
5. 5 the shorter axis of the ellipse, which does not coincide with the maximum stress on the reinforcement;
6. 6 the axis of the circle that coincides with the maximum stress on the reinforcement;
7. 7 is a fragment of the concrete building board with composite reinforcement.

The relationship between the size relationships of the axes of the ellipse and the section modulus in relation to the main central axes of the ellipse is shown in the attached table according to the analytical data [4].

The moments of resistance with regard to the elliptical axes of the maximum stress with the different growing ratios of the larger axis to the smaller one and an area which is equal to the cross-sectional area of the circle of 14 mm increase (see table). The resistance moments with respect to the axes of the minimum stress decrease under the similar conditions. The total resistance moments with respect to the two axes increase slightly.

• Die berechneten Beanspruchungen bezüglich der Achsen des Querschnitts in der Mitte der Länge (auf der Halblänge) der Bauplatte bestimmen die Größe der Ellipsenachsen des Verbundwerkstoff-Bewehrungsstabs. Die Bauplatte aus Beton mit Verbundwerkstoff-Bewehrung ist aus Beton und Verbundwerkstoff-Bewehrung ausgebildet. In der Einbaulage (Montageposition) wird der Bewehrungskorb mit der Längsspannbewehrung auf den Untersatz (Trog) der Form positioniert. Dabei ist die Ellipse im Querschnitt der Bewehrung nach den Höchstbeanspruchungen der Bauplatte ausgerichtet. Durch die Höchstbeanspruchungen wird die Bewehrung dabei an den Stirnflächen der Bauplatte mithilfe der dreidimensionalen rechteckförmigen Spiralen und einer zusätzlichen dreidimensionalen Spirale in der Mitte der Bauplatte festgehalten. Stempel werden eingeführt; zwischen den Stempeln werden die senkrechten Gerüste eingeordnet, die Montageösen werden befestigt.

The concrete building board with the composite reinforcement is manufactured as follows:

• The calculated stresses with respect to the axes of the cross-section in the middle of the length (on the half-length) of the building board determine the size of the ellipse axes of the composite reinforcement bar. The building board made of concrete with composite reinforcement is made of concrete and composite reinforcement. In the installation position (assembly position) the reinforcement cage with the longitudinal reinforcement is positioned on the base (trough) of the form. The cross section of the reinforcement's ellipse is aligned with the maximum loads on the building board. Due to the maximum loads, the reinforcement is held on the end faces of the building board using the three-dimensional rectangular spirals and an additional three-dimensional spiral in the middle of the building board. Stamps are introduced; The vertical scaffolding is placed between the stamps and the mounting eyes are attached.

The composite reinforcement in the form of bars with an elliptical cross section is installed when calculating the acting forces so that the tensile stresses are absorbed and the areas of the structure that are subjected to pressure are reinforced. Such reinforcement is particularly suitable for production and has no sharp edges that cut into concrete and thereby cause crack formation.

The proposed design (structure) of the building board made of concrete with composite reinforcement makes it possible to facilitate the manufacturing technology of the building boards. This is done by ensuring the possibility of using seamless reinforcement elements, reinforcement brackets made of plastic. The maximum load on the building board is increased with the aid of composite reinforcement with an elliptical cross-section. The axis sizes of the ellipse in cross-section are designed proportionally to the calculated loads with respect to the axes of the building board.

After all, it can be stated that it is a building board made of concrete with composite reinforcement, which consists of a reinforcement cage with longitudinal reinforcement, three-dimensional rectangular spirals that encompass the reinforcement on the end faces of the building board, as well as vertical scaffolding, assembly eyelets and grouting concrete.

The longitudinal reinforcement is made of composite material and has an elliptical cross-section. The longer axis of the ellipse in cross section coincides with the maximum stresses on the building board. The axis size of the ellipse of the composite reinforcement bar is designed proportionally to the calculated stresses with respect to the axes of the building board in cross section in the middle of the length (on the half length).

literature sources

1. 1. Patent RU Nr. 2026939 IPC E04C 2/06, veröffentl. 20.01.1995
2. 2. Patent RU Nr.2100540 IPC E04C 2/06, veröffentl. 27.12.1997
3. 3. Patent RU Nr.2100540 IPC E04C 2/06, veröffentl. 27.12.1997
4. 4. Handbuch für Festigkeitslehre / G.S. Pissarenko, A.P. Jakowlew, W.W. Matwejew; Hrsg. G.S. Pissarenko - 2. Auflage, überarbeitet und ergänzt. - Kijew: Nauk. dumka, 1988. - 736 S. (S. 58, 74) .

Tabelle Bauplatte aus Beton mit Verbundwerkstoff-Bewehrung Parameterbezeichnung Kreis, Durchmesser 14 mm Ellipse 1. Achsenlänge, mm 14 × 14 15,8599 × 12,3584 18,541394 × 10,570924 22,766353 × 8,6508726 2. Größenverhältnis der Ellipsenachsen i=1,0 i=1,283 i=1,754 i=2,619 3. Querschnittsfläche, cm² 1,5386 1,5386 1,5386 1,5386 4. Widerstandsmoment bezüglich der max. Achse, cm³ 0,26926 0,305035 0,356596 0,4399735 5. Widerstandsmoment bezüglich der min. Achse, cm³ 0,26926 0,237686 0,203304 0,1671833 6. Gesamter Widerstandsmoment, cm³ 0,53852 0,542716 0,5599015 0,6071568

1. 1st patent RU No. 2026939 IPC E04C 2/06, published 20.01.1995
2. 2nd patent RU No. 2100540 IPC E04C 2/06, published 27.12.1997
3. 3rd patent RU No. 2100540 IPC E04C 2/06, published 27.12.1997
4. 4. Manual for strength theory / GS Pissarenko, AP Jakowlew, WW Matwejew; Edited by GS Pissarenko - 2nd edition, revised and supplemented. - Kiev: Nauk. dumka, 1988. - 736 p. (p. 58, 74) ,

table Building board made of concrete with composite reinforcement parameter name Circle, diameter 14 mm ellipse 1. Axle length, mm 14 × 14 15.8599 x 12.3584 18.541394 × 10.570924 22.766353 × 8.6508726 2. Size ratio of the ellipse axes i = 1,0 i = 1.283 i = 1.754 i = 2.619 3. Cross-sectional area, cm ² 1.5386 1.5386 1.5386 1.5386 4. section modulus with respect to the max. Axis, cm ³ 0.26926 0.305035 0.356596 0.4399735 5. section modulus with respect to the min. Axis, cm ³ 0.26926 0.237686 0.203304 0.1671833 6. Total section modulus, cm ³ 0.53852 0.542716 0.5599015 0.6071568

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• RU 2026939 [0002, 0015]
• RU 178875 [0003]
• RU 2100540 [0015]

Non-patent literature cited

• G. S. Pissarenko, A.P. Jakowlew, W.W. Matveyev; Ed. G.S. Pissarenko - 2nd edition, revised and supplemented. - Kiev: Nauk. dumka, 1988. - 736 p. (p. 58, 74) [0015]

Claims (1)

Building board with reinforcement cage, with longitudinally stressed reinforcement, which are covered at the plate ends with volumetric rectangular spirals, vertical scaffolding assembly loops and concrete injections, characterized in that the cage consists of an elliptical body, the longitudinal axis of which coincides with the maximum load on the building board and that the values of Axes of the ellipse of the body of the composite reinforcement is chosen proportional to the calculated loads along the axis of the building board, the maximum load acting in the middle of the length of the longitudinal reinforcement.

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