EP3728756A1 - Column-ceiling node for a reinforced concrete ceiling and two concrete columns in storey construction - Google Patents
Column-ceiling node for a reinforced concrete ceiling and two concrete columns in storey constructionInfo
- Publication number
- EP3728756A1 EP3728756A1 EP18826915.3A EP18826915A EP3728756A1 EP 3728756 A1 EP3728756 A1 EP 3728756A1 EP 18826915 A EP18826915 A EP 18826915A EP 3728756 A1 EP3728756 A1 EP 3728756A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- concrete
- support
- ceiling
- concrete support
- column
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000004567 concrete Substances 0.000 title claims abstract description 255
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 71
- 238000010276 construction Methods 0.000 title abstract description 19
- 230000002787 reinforcement Effects 0.000 claims description 52
- 229910000831 Steel Inorganic materials 0.000 claims description 21
- 239000010959 steel Substances 0.000 claims description 21
- 239000011440 grout Substances 0.000 claims description 12
- 239000011372 high-strength concrete Substances 0.000 claims description 11
- 239000002131 composite material Substances 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 13
- 210000002435 tendon Anatomy 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 239000004570 mortar (masonry) Substances 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000005253 cladding Methods 0.000 description 3
- 238000009415 formwork Methods 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 238000012549 training Methods 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000009365 direct transmission Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/43—Floor structures of extraordinary design; Features relating to the elastic stability; Floor structures specially designed for resting on columns only, e.g. mushroom floors
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/30—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts being composed of two or more materials; Composite steel and concrete constructions
Definitions
- Support ceiling node for a reinforced concrete slab and two concrete columns in the
- the invention relates to a support ceiling node for a reinforced concrete ceiling and two prefabricated concrete columns in the storey building, wherein the upper end of the lower concrete support and the lower end of the upper concrete support are disposed adjacent to the reinforced concrete ceiling, wherein the support axes of the concrete columns are substantially along a common line extend.
- Supports are used in structural engineering for the derivation of vertical loads.
- the cross-sections of columns can be made by using a high proportion of longitudinal reinforcement (eg 20% of the total cross-sectional area), by inserting steel profiles in the so-called composite columns and by using high-strength concrete from C70 / 85 to C100 / 115 or even higher Strengths, be reduced. Decisive for the reduction of the column cross sections is the achievement of a larger usable floor area.
- Reinforced concrete ceilings are only subjected to high stress in a few areas of their entire area. For this reason, for example, reinforced concrete flat slabs are usually made of low strength concrete, e.g. C30 / 37, made. In the highly stressed areas near the supports, a higher proportion of reinforcing steel is laid in the ceilings. Tendons in the floor slabs can be used to relieve the highly stressed areas and to improve the deformation behavior.
- the column ceiling node is a weak point in the support system for the removal of vertical loads in concrete structures because of the lower concrete strength compared to the columns and because of the discontinuity of the longitudinal reinforcement.
- a steel structure in the column ceiling node can be carried out.
- Such a steel structure is marketed, for example, under the name "Geilinger Europilz” by the company Spannverbund Bausysteme GmbH (CH-8180 Bülach)
- CH-8180 Bülach Spannverbund Bausysteme GmbH
- the cross-sectional area of the pillars in the pillar ceiling node is not reduced.
- the discontinuity of the longitudinal reinforcement of the precast columns in the column ceiling node represents a weak point, which is detrimental to the load capacity and for deformations in use.
- JP 8027937 The possibility of forming the highly stressed ceiling area of a flat ceiling in the immediate vicinity of a concrete support by means of a prefabricated element made of high-strength concrete is described in JP 8027937.
- the prefabricated element has according to JP 8027937 a square plan with Side dimensions between the triple support diameter and a quarter of the span of the flat ceiling.
- the prefabricated element according to JP 8027937 contains a ceiling reinforcement which is to be connected to the reinforcement of the Ortbetondecke by lap joint or by means of socket joint. Compared with the conventional production in which the reinforcement of the flat ceiling is laid by the column ceiling node, this results in an increased effort in the implementation and execution of the reinforcement of the flat ceiling.
- EP 174 994 9 A2 prefabricate the arranged under the column ceiling node concrete support and the element of high strength concrete in one piece.
- a disadvantage of this embodiment is the apparent in Fig. 2 of EP 174 994 9 A2 apparent loss of cross-sectional area of the lower support in the column ceiling node. This reduction in the cross section of the lower support results in a loss of bearing capacity in the S tützen ceiling node.
- a disadvantage of the support ceiling node shown in US 1,031,044 is the high Effort for the production and assembly of the individual prefabricated elements, for the concreting of the cavities 59 and 61 in the support ceiling node and for producing the concrete cylinder under the upper concrete support 19. It is particularly disadvantageous that the concrete volume in the column ceiling node and in the concrete cylinder below the upper concrete support 19 is manufactured on the construction site. It is known that high-strength concretes are used in precast plants, but are generally not used on the construction site because of the high expenses for transport and the timely introduction. If the entire casting work on the construction site is carried out with high-strength grouting mortar, a very high expenditure is incurred for the purchase of the expensive grouting mortar.
- the Greek columns of antiquity have enlarged cross-sectional dimensions at their ends.
- the formation of a capital at the upper end is favorable from a static point of view.
- the superimposition of prismatic beams of stone on a round concrete support would lead to a high edge pressure, because the Auflagerung would not be along a line, but in one point would be. High edge pressures can cause the material of the support to chip off at the location of the beam support.
- FIG. 4 of DE 173035 Another example of a concrete support with enlarged cross-sectional dimensions is shown in FIG. 4 of DE 173035.
- this concrete support prefabricated column segments are stacked with recesses on the site. Subsequently, a reinforcement is inserted into the recesses and the recesses are filled with cement mortar.
- the concrete support has a capital at its upper end. Beams are supported on the capital.
- FIG. 4 of DE 173035 shows that the lower end of the upper support has no enlarged cross-sectional dimensions.
- the object of the present invention to provide a column ceiling node which addresses the above drawbacks and can be used in contemporary storey construction.
- the support ceiling node should have sufficient carrying capacity for passage of the normal force of the upper support and be easier and less expensive to produce compared to the known designs made of steel.
- the support ceiling node should allow in comparison to the known concrete construction solutions, the passage of the normal force of the upper support without loss of bearing capacity and with little deformation in use.
- the subject matter of claim 1 is characterized in that it provides a column ceiling node for a reinforced concrete floor and two prefabricated concrete columns in the storey, wherein the cross section in the region of the upper end of the lower concrete support is greater than a cross section of the middle half of the longitudinal extent of the lower concrete support , and wherein the cross section in the region of the lower end of the upper concrete support is greater than a cross section of the middle half of the longitudinal extent of the upper concrete support.
- the invention advantageously makes it possible to apply the usual and proven design of the roof reinforcement in the pillar ceiling node, which takes place by means of a shock-free implementation of the reinforcement and the tendons by the pillar ceiling node, and at the same time the carrying capacity of the support ceiling node for receiving the normal force of the upper To increase concrete support in comparison to the known Ortbetonaus entryen.
- the basic idea of the invention is to increase the cross-sectional areas of the lower and the upper support in areas adjacent to the reinforced concrete floor. If the enlarged cross-sectional areas are arranged only in the floor construction, i. Beyond the clear room height, a total reduction of the support surface in the rooms of a storey building is possible.
- the concrete columns and possibly intervening designed as a flat ceiling reinforced concrete ceiling, which has sufficient carrying capacity for passing the normal force of the upper concrete support, compared to the known designs, especially for columns made of reinforced concrete, simpler and cheaper to manufacture.
- the arrangement of the ceiling reinforcement in the column ceiling node economic design implementation of the ceiling reinforcement in the column ceiling node is possible.
- the upper end of the lower concrete support is at the bottom and the lower end of the upper concrete support is located at the top of the reinforced concrete ceiling.
- the upper end of the lower concrete support and the lower end of the upper concrete support touch. As a result, a shock training is possible.
- At least one concrete support has a substantially constant cross section along the middle half. This offers advantages in the production, among other things.
- the upper quarter of the longitudinal extent of the lower concrete support in the region of the adjacent to the reinforced concrete ceiling upper end of the lower concrete support its largest cross-sectional area. This can be advantageous, for example if the lower concrete support has to take on additional load in addition to the normal force of the upper concrete support, for example by additional ribs of the reinforced concrete ceiling. For similar considerations, it is also preferred if the lower quarter of the longitudinal extent of the upper concrete support has its largest cross-sectional area in the region of the lower end of the upper concrete support adjoining the reinforced concrete floor.
- At least one concrete support is made of a high-strength or ultrahigh-strength concrete.
- At least one concrete support has a longitudinal reinforcement which projects from the upper end of the lower concrete support into the reinforced concrete ceiling. In this way, the construction in the area of the support ceiling node can be reinforced without having to increase the support surface.
- the longitudinal reinforcement is expediently formed from fiber composite materials.
- the concrete support can be further reinforced without having to increase the support surface.
- At least one concrete support has a cavity arranged along its longitudinal extension, wherein the cavity preferably has a cylindrical cross-section and is particularly preferably axially symmetrical with respect to the support axis. In this way, the concrete support, for example, be subsequently shed.
- a steel plate preferably normal to the column axis, is arranged at the upper end of the lower concrete support and / or at the lower end of the upper concrete support. In this way, among other things, the bearing behavior of Column cover knot improves without having to increase the support surface.
- a stiffening reinforcement is arranged in the upper quarter and / or in the lower quarter of the longitudinal extent of at least one concrete support, preferably in the area (s) of enlarged cross sections. In this way, the construction in the area of the support ceiling node can be reinforced without having to increase the support surface.
- an annular reinforcement and / or an orthogonal movement is arranged in the reinforced concrete ceiling between upper reinforcement layers and lower reinforcement layers.
- the construction in the area of the support ceiling node can be reinforced without having to increase the support surface.
- at least one body of high-strength and / or ultra-high-strength concrete is arranged in a region of the reinforced concrete floor, which is arranged between the upper end of the lower concrete support and the lower end of the upper concrete support. In this way, the construction in the area of the support ceiling node can be reinforced without having to increase the support surface.
- a double bottom is arranged on the reinforced concrete floor, wherein all areas of enlarged cross sections are located at the lower end of an upper concrete support within the height of the double floor.
- the slightly enlarged support surface can be recovered in the lower area and the total floor area can be increased, in the area under the raised floor all sorts of installations can be accommodated.
- the cross-sectional area in the region of the upper end of the lower concrete support is greater than equal to the cross-sectional area in the region of the lower end of the upper concrete support executed.
- a ratio of the largest cross-sectional area in the upper quarter of the lower concrete support or in the lower quarter of the upper concrete support to the cross-sectional area in the middle half of the longitudinal extent of the concrete support between 1.1 and 25, preferably between 2 and 4 is provided. In this way the compromise between reduction of the support surface and necessary load-bearing capacity of the construction can be optimized.
- cross-section in the broader sense means “cross-sectional area”.
- substantially in the present specification and claims means that manufacturing tolerances and / or tolerances that may result from the design are included; that is to say, a deviation which is familiar to the person skilled in the art, for example from one of the support axes 5 of the concrete columns from the common straight line, has no influence on a solution according to the invention of the object of the invention.
- Fig. 1 is a sectional view of a first embodiment according to the invention a support ceiling node according to the drawn in Figure 2 sectional plane I-I.
- FIG. 2 shows a section according to the section plane II - II drawn in FIG. 1;
- Fig. 3 is a sectional view through two column ceiling nodes of Figures 1 and 2, and an intermediate projectile.
- Fig. 4 is a sectional view of a second embodiment of a support ceiling knot according to the invention.
- Fig. 5 is a sectional view of a third embodiment of a support ceiling knot according to the invention.
- Fig. 6 is a sectional view of a fourth embodiment of a support ceiling knot according to the invention
- Fig. 7 is a sectional view of a fifth embodiment of a support ceiling knot according to the invention
- Fig. 8 is a sectional view of a sixth embodiment of a support ceiling knot according to the invention.
- FIG. 9 shows a sectional view through six support ceiling nodes of a seventh embodiment according to the invention.
- FIG. 10 shows a section according to the sectional plane X-X shown in FIG. 9;
- FIG. 11 shows the detail A of FIG. 9 in a view
- Fig. 12 is a corresponding to FIG. 12 view of a corner support.
- FIGS. 1 to 3 show a first exemplary embodiment of a support ceiling knot 1 according to the invention.
- FIG. 1 shows an example of a column ceiling node 1 according to the invention, wherein a reinforced concrete floor 11 is arranged between two prefabricated concrete columns 2, a lower concrete column 3 and an upper concrete column 4.
- the concrete columns 2 have a longitudinal extent, which can be divided into a middle half 6, an upper quarter 9 and a lower quarter 10.
- the support axes 5 of the concrete columns 2 extend substantially along a common straight line.
- the cross-section in the area of the lower concrete support upper end 7 arranged on an underside 14 of the reinforced concrete ceiling 11 is larger than a cross-section of the middle half 6 of the longitudinal extension of the lower concrete support 3.
- the cross-section in the region of, on an upper side 15 of the reinforced concrete ceiling 11 arranged lower end 8 of the upper concrete support 4 is greater than a cross section of the middle half 6 of the longitudinal extent of the upper concrete support. 4
- the diameter of the concrete columns 2 with an exemplary circular cross-section increases from substantially 0.5 m ("meter") to substantially 1.0 m in the areas adjacent to the reinforced concrete floor 11 and is in the region of an upper end 7 of the lower one Concrete support 3 and in the region of a lower end 8 of the upper concrete support 4 substantially 1.0 m. Because the area of a circular concrete column 2 increases with the square of the diameter, the passage of the normal force of the upper concrete support 4 in the lower concrete support 3 four times the area in the ceiling area available. For example, if the concrete columns 2 have a concrete strength of 160 N / mm 2 , a strength of 40 N / mm 2 for the reinforced concrete ceiling 11 is sufficient in this example. In this simplified calculation example, the influence of a longitudinal reinforcement 17 contained in a concrete support 2 was not considered.
- the lower end 8 of the upper concrete support 4 disappears according to FIG. 1 in a double floor 22. In this way, the entire floor area or the entire space can be used over it.
- the increased cross-sectional area of the upper concrete support 4 therefore plays no role in determining the rentable floor area.
- a longitudinal reinforcement 17 of the lower concrete support 3 protrudes in this example in the reinforced concrete ceiling 11, which is formed as a flat ceiling 12.
- a part of the longitudinal reinforcement 17 is designed in the area in which the cross section of the lower concrete support 3 is increased, with deflections.
- a Umschnümngsbewehrung 18 may be arranged, as shown by way of example.
- the upper end 7 of the lower concrete support 3 may have a surface with serrations 23 in order to better enable the absorption of the compressive force of the upper concrete support 4, which is passed through the reinforced concrete ceiling 11.
- the lower end of the upper concrete support 8 may optionally have a steel plate 20.
- the longitudinal reinforcement 17 of the upper concrete support 4 may be welded to the steel plate 20.
- a layer 24 of grout can be arranged under the steel plate 20, a layer 24 of grout.
- the reinforced concrete floor 11 has four horizontally arranged reinforcement layers 16 in this example. Two reinforcing layers 16 are in the vicinity of the underside 14 of the reinforced concrete slab 11 and two reinforcing layers 16 are arranged in the vicinity of the upper side 15 of the reinforced concrete slab 11.
- annular reinforcement 19 which absorbs tensile forces arising due to the enlargement of the cross-sectional areas of the lower concrete support 3 and the upper concrete support 4 in the reinforced concrete slab 11, may additionally be arranged.
- Fig. 2 the lower two reinforcement layers 16, the longitudinal reinforcement 17 of the lower concrete support 3 and the annular reinforcement 19 are shown.
- annular reinforcement 19 may be laid between the lower and upper reinforcement layers 16 of the reinforced concrete ceiling 11 and an orthogonal reinforcement.
- the arrangement of two stacked column ceiling nodes 1 is shown in FIG.
- the arranged between the two reinforced concrete floors 11 concrete columns 2 have in the upper quarter 9 of the lower concrete support 3 and the lower quarter 10 of the upper concrete support 4 cross sections that are larger than the cross section in the middle half 6 of the longitudinal extent of the concrete support 2.
- On the reinforced concrete slabs 11 raised floors 22 are arranged.
- the areas of the concrete columns 2 with the enlarged cross-sectional areas, which are arranged on the upper sides 15 of the reinforced concrete slabs 11, lie below or within the heights of the false floors 22.
- the support axes 5 of the three concrete columns 2 shown in FIG. 3 lie substantially on a vertically arranged one straight.
- FIG. 4 A sectional view of a second embodiment of a column ceiling knot 1 according to the invention is shown in FIG. 4.
- the lower concrete support 3 and the upper concrete support 4 are made of ultra-high-strength concrete and have no reinforcement. Alternatively, they can have a reinforcement. For the sake of clarity, the reinforcement of the reinforced concrete ceiling 11 is not shown in this embodiment.
- the reinforced concrete ceiling 11 is executed in this example as a ribbed ceiling 13.
- the width of a rib 25 of the reinforced concrete slab 11 is greater than the cross-sectional dimensions at the upper end 7 of the lower concrete support 3 and at the lower end 8 of the upper concrete support 4.
- body 21 made of high-strength and / or ultra-high-strength concrete, which are advantageous for the passage of the normal force of the upper concrete support 4 through the reinforced concrete ceiling 11 in the lower concrete support 3, be arranged, as exemplified in Fig. 4.
- a recess 33 is made on the upper side 15 of the reinforced concrete ceiling 11.
- FIG. 4 shows that the bodies 21 protrude into the layer 24 of potting mortar. This is particularly favorable for achieving a high load-bearing capacity in the column ceiling node 1, because the strength of the layer 24 of grouting mortar is higher than the strength of the concrete of the reinforced concrete floor 11. Accordingly, could a longitudinal reinforcement 17 from the lower concrete support 3 in the layer 24 from protrude high-strength grout.
- the lower concrete support 3 and the upper concrete support 4 have in this example a square cross-section.
- the cross section in the region of the upper end 7 of the lower concrete support 3 is greater than the cross section in the region of the lower end 8 of the upper Concrete support 4, because the lower concrete support 3 in addition to the normal force of the upper concrete support 4 has yet to record the registered by the ribs 25 of the reinforced concrete ceiling 11 load.
- the lower concrete support 3 is designed for architectural reasons in this embodiment, that the largest cross-sectional dimension is not present in the region of the upper end 7 of the lower concrete support 3, but a cross section in the upper quarter 9, but outside the region of the upper end 7, the lower concrete support 3 is greater than the cross section in the region of the upper end 7 of the lower concrete support.
- a cross section in the lower quarter 10, but outside the region of the lower end 8, the upper concrete support 4 may be greater than the cross section in the region of the lower end 8 of the upper concrete support 4.
- the largest cross-sectional dimension in the region of the lower end 8 of the upper concrete support 4. is constant over a certain height.
- FIG. 5 A sectional view of a third embodiment of a column ceiling knot 1 according to the invention is shown in FIG. 5.
- the lower concrete support 3 and the upper concrete support 4 have in this example in the middle half 6 of their longitudinal extent circular cross-sections.
- the lower concrete support 3 has a frustoconical widening 27 in the upper quarter 9. Between the largest cross-section of the conical widening 27 and the upper end 7, the lower concrete support 3 has a circular cross section with a constant diameter.
- the upper concrete support 4 has in the lower quarter 10 a frustoconical widening 27.
- a steel plate 20 is fixed, which is arranged substantially normal to the support axis 5.
- FIG. 5 shows that the reinforced concrete ceiling 11 in this exemplary embodiment adjoins the lower concrete support 3 laterally. It may be advantageous to form the lateral surface 26 of the cylindrical portion, which adjoins the upper end 7 of the lower concrete support 3, with a toothing 23 in order to better connect the reinforced concrete ceiling 11 to allow the lower concrete support 3.
- FIG. 6 A sectional view of a fourth embodiment of a column ceiling knot 1 according to the invention is shown in FIG. 6 dargesteht.
- the lower concrete support 3 and the upper concrete support 4 have in this example in the middle half 6 of their longitudinal extent circular cross-sections.
- the lower concrete support 3 has a frustoconical widening 27 in the upper quarter 9.
- the upper concrete support 4 has in the lower quarter 10 a frustoconical widening 27.
- the upper concrete support 4 has a circular cross section with a constant diameter. In this embodiment, a contact of the upper end 7 of the lower concrete support 3 and the lower end 8 of the upper concrete support 4 takes place.
- FIG. 6 shows that the reinforced concrete floor 11 in this exemplary embodiment adjoins the upper concrete support 4 laterally. It may be advantageous to form the lateral surface 26 of the cylindrical portion, which adjoins the lower end 8 of the upper concrete support 4, with a toothing 23 in order to allow a better connection of the reinforced concrete ceiling 11 to the upper concrete support 4.
- FIG. 7 A sectional view of a fifth embodiment of a column ceiling knot 1 according to the invention is shown in FIG. 7.
- the lower concrete support 3 and the upper concrete support 4 have in this example in the middle half 6 of their longitudinal extent circular cross-sections.
- the lower concrete support 3 has a frustoconical widening 27 in the upper quarter 9. Between the largest cross-section of the frusto-conical expansion 27 and the upper end 7, the lower concrete support 3 has a circular cross-section of constant diameter, which is smaller than the largest diameter of the frusto-conical expansion 27 on.
- At the upper end 7 of the lower concrete support 3 and at the lower end 8 of the upper concrete support 4 each steel plates 20 are mounted.
- the reinforced concrete ceiling 11 which is formed in this example as a flat ceiling 12, in this example, on the truncated conical widening 27 of the lower concrete support 3.
- a sectional view of a sixth embodiment of a support ceiling knot 1 according to the invention is shown in FIG. 8.
- the lower concrete support 3 and the upper concrete support 4 have in this example in the middle half 6 of their longitudinal extent circular cross-sections.
- the lower concrete support 3 has a frustoconical widening 27 in the upper quarter 9.
- the upper concrete support 4 has in the lower quarter 10 a frustoconical widening 27.
- In the support ceiling node 1 is a touch of the upper end 7 of the lower concrete support 3 and the lower end 8 of the upper concrete support 4 instead.
- the reinforced concrete ceiling 11 is connected to the frusto-conical widening 27 of the upper concrete support 4.
- FIGS. 9 to 12 show a seventh example according to the invention for a column ceiling node 1 according to the invention.
- a sectional view of the seventh embodiment of a support ceiling knot 1 according to the invention is shown in FIG. 9.
- This embodiment shows that it is possible to form prefabricated concrete columns 2 with column ceiling nodes 1 according to the invention, which have a length which corresponds to twice the floor height.
- the installation of prefabricated concrete columns 2 with a length that corresponds to twice the floor height leads to an acceleration of the construction process, because the time-consuming setting up and Einjust Schlieren the concrete columns 2 must be done only on every second floor.
- FIG. 9 shows that it is possible to connect diagonal bars 28 to the column ceiling node 1 according to the invention.
- the connection of a pressure-loaded diagonal bar 28 can take place according to FIG. 9 with steel plates 20 at the ends of the diagonal bar 28 and / or with layers 24 of grout applied to the construction site.
- the arrangement and bias of a tendon 29 allows the absorption of tensile forces in a diagonal bar 28.
- a lower anchorage 30 of the arranged in the diagonal bars 28 tendon 29 is shown in Fig. 9.
- the section through an exemplary diagonal bar 28 shown in FIG. 10 shows that the tendon 29 is disposed within a cladding tube 31 and that the volume between the tendon 29 and the cladding 31 is filled with grout 32.
- FIG. 11 The detail A of FIG. 9 is shown in FIG. 11 in a view.
- the concrete columns 2 have rectangular cross-sections in this example.
- a side dimension of the lower concrete support 3 is increased in the upper quarter 9.
- the area of the lower concrete support 3 arranged within the height of the reinforced concrete floor 11 has a constant cross-section which is greater than the cross-section in the middle half 6 of the longitudinal extent of the lower concrete support 3.
- the upper concrete support 4 has a cross-sectional area adjacent to its lower end 8 which is bigger than that Cross section in the middle half 6 of its longitudinal extent.
- the upper concrete support 4 is equipped at its lower end 8 with a steel plate 20. Between the upper end 7 of the lower concrete support 3 and the lower end 8 of the upper concrete support 4, a layer 24 of grout is arranged.
- the reinforced concrete ceiling 11 is laterally connected to the support ceiling node 1 in this embodiment, because in this example, the concrete columns 2 are arranged in the facade of a skyscraper.
- a toothing 23 is present in the contact surface between the reinforced concrete ceiling 11 and the lower concrete support 3.
- FIG. 12 shows a detail corresponding to FIG. 11 for a column ceiling node 1 arranged in a corner of the skyscraper.
- concrete columns 2 with a circular or square cross-section were described.
- concrete columns can have any cross-sectional shapes, for example a polygonal or elliptical shape.
- the present invention encompasses all conventional types of concrete known to the person skilled in the art as well as other common pourable building materials, such as, for example, ice or castable synthetic resin.
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Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA51072/2017A AT520529B1 (en) | 2017-12-22 | 2017-12-22 | Support ceiling node for a reinforced concrete floor and two concrete columns in the storey |
ATA50453/2018A AT520519B1 (en) | 2018-06-06 | 2018-06-06 | Support ceiling node for a reinforced concrete floor and two concrete columns in the storey |
PCT/AT2018/060293 WO2019118998A1 (en) | 2017-12-22 | 2018-12-11 | Column-ceiling node for a reinforced concrete ceiling and two concrete columns in storey construction |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3728756A1 true EP3728756A1 (en) | 2020-10-28 |
EP3728756B1 EP3728756B1 (en) | 2023-07-26 |
EP3728756C0 EP3728756C0 (en) | 2023-07-26 |
Family
ID=64901242
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP18826915.3A Active EP3728756B1 (en) | 2017-12-22 | 2018-12-11 | Column-ceiling node for a reinforced concrete ceiling and two concrete columns in storey construction |
Country Status (2)
Country | Link |
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EP (1) | EP3728756B1 (en) |
WO (1) | WO2019118998A1 (en) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE173035C (en) * | 1905-03-11 | 1906-07-05 | PROCESS FOR THE MANUFACTURE OF IRON CONCRETE STRUCTURES | |
US1031044A (en) * | 1910-04-14 | 1912-07-02 | Unit Construction Co | Concrete construction. |
DE20012636U1 (en) * | 2000-07-19 | 2001-02-15 | Heymann Susanne | Device for the production of concrete columns with capital training |
-
2018
- 2018-12-11 EP EP18826915.3A patent/EP3728756B1/en active Active
- 2018-12-11 WO PCT/AT2018/060293 patent/WO2019118998A1/en unknown
Also Published As
Publication number | Publication date |
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EP3728756B1 (en) | 2023-07-26 |
WO2019118998A1 (en) | 2019-06-27 |
EP3728756C0 (en) | 2023-07-26 |
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