AT400600B - Joint element for steel frameworks - Google Patents
Joint element for steel frameworks Download PDFInfo
- Publication number
- AT400600B AT400600B AT213291A AT213291A AT400600B AT 400600 B AT400600 B AT 400600B AT 213291 A AT213291 A AT 213291A AT 213291 A AT213291 A AT 213291A AT 400600 B AT400600 B AT 400600B
- Authority
- AT
- Austria
- Prior art keywords
- rod
- node
- node element
- ball
- tubular steel
- Prior art date
Links
Classifications
-
- 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
- E04B1/19—Three-dimensional framework structures
- E04B1/1903—Connecting nodes specially adapted therefor
- E04B1/1906—Connecting nodes specially adapted therefor with central spherical, semispherical or polyhedral connecting element
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C3/08—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with apertured web, e.g. with a web consisting of bar-like components; Honeycomb girders
-
- 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
- E04B1/19—Three-dimensional framework structures
- E04B2001/1924—Struts specially adapted therefor
- E04B2001/1927—Struts specially adapted therefor of essentially circular cross section
-
- 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
- E04B1/19—Three-dimensional framework structures
- E04B2001/1924—Struts specially adapted therefor
- E04B2001/1936—Winged profiles, e.g. with a L-, T-, U- or X-shaped cross section
-
- 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
- E04B1/19—Three-dimensional framework structures
- E04B2001/1957—Details of connections between nodes and struts
- E04B2001/1972—Welded or glued connection
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0486—Truss like structures composed of separate truss elements
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention relates to joint elements, comprising hollow or solid spheres, for a steel framework, in the case of which, in order to reduce the loading in the joint connections and to stiffen the joints, the bars 3 are led through the joint element 1, it being possible for points of inflection of the bars which are led through to be provided in the lead-through. <IMAGE>
Description
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EMI1.1
stab, vorzugsweise der Gurtstab, insbesondere zentrisch, durch den Knoten hindurchgeführt ist.
Es sind Stahifachwerke, insbesondere Raumfachwerke bekannt, bei denen die Fachwerksstäbe an Knotenelementen angeschweisst sind. Diese Konstruktion hat den Nachteil, dass die vollen Stabkräfte der Fachwerksstäbe an die Knotenelemente angeschlossen werden müssen.
Dadurch werden Hohlkugeln relativ gross, dickwandig und die Anschlussschweissnähte hoch beansprucht.
Durchgehende Stäbe durch einen Kugelknoten sind aus der GB PS 366 951 (Fig. 4) bekannt. Da aber die Anschlussstäbe senkrecht zur Kugeloberfläche an dieser angeschlossen sind, geht der Kraftfluss über die Kugelwandstärke. Die Schweissnähte sind hoch beansprucht und die Kugelgrösse wird durch den Platzbedarf der Anschlussstäbe bestimmt. Die DE-AS 1 116 374 offenbart eine ähnliche Konstruktion, wobei der durchgehende Stab durch eine Zwischenwand ersetzt wird. Eine zumindest teilweise Verbindung der Stäbe untereinander, also ein direkter Kraftschluss, ist nicht geoffenbart. In diesem Sinn liegt auch die DE-AS 1 261 300, die eine verschweissbare Steckkonstruktion zeigt, und die AT-PS 275 117 (Verbundkonstruktion mit Zuggliedern) neben der Erfindung.
Die Erfindung hat es sich zur Aufgabe gestellt, einerseits die Kugelwandstärke und auch das Kugelvolumen zu vermindern, andererseits den Schweissaufwand für den Anschluss der Fachwerkstäbe zu reduzieren.
Die Erfindung ist dadurch gekennzeichnet, dass zumindest ein Teil der Diagonaistäbe zumindest teilweise sowohl am Gurtstab als auch am Knotenelement angeschlossen sind. Weiters wird durch die Durchführung eines Stabes durch den Kugelknoten die Querkontraktion der Kugel bei Beanspruchung aus anderen an der Kugel angeschlossenen Stäben reduziert und die Kugel so zusätzlich versteift und ihre Tragfähigkeit erhöht.
Im Bereich des Kugelknotens entsteht durch den durchgeführten Stab in Kombination mit dem Kugelknoten eine Verstärkung, so dass es auch möglich ist, Streben nicht vollständig an den Kugelknoten anzuschliessen, sondern nur teilweise an diesen anzuschliessen und den verbleibenden Teil an den durchgehenden unverschwächten Stab durch Schweissung anzuschliessen.
Ein grosser Vorteil der Erfindung liegt darin, dass durch den inneren Stabanschluss der Knoten verkleinert wird und dadurch der Fachwerksstab schlanker erscheint und dass durch den erfindungsgemässen Knotenpunkt der Herstellungs- und Montageaufwand reduziert wird.
Die so beschriebene Konstruktion lässt sich durch Anwendung von T-Profilgurten statt Rohren - meist in exzentrischer Anordnung - noch weiter variieren. Der aussenliegende Flansch ist ausserhalb der Kugel angeordnet und nur die Stege werden durch die Kugel hindurchgeführt. Auf diese Weise lässt sich ein Tragrost mit ebenen Deckflächen als Gurtung eines Raumfachwerkes erstellen.
Die vorliegende Erfindung wird in den Zeichnungen durch die Gegenüberstellung des Standes der Technik mit der Erfindung in drei Figuren beispielsweise erläutert.
Fig. 1 zeigt eine Knotenausbildung gemäss dem Stand der Technik, bei dem alle Fachwerksstäbe (2) an die Hohlkugel des Fachwerkknotens (1) direkt angeschweisst sind.
Fig. 2 Zeigt als Beispiel den neuen Knoten mit der Durchführung eines Fachwerkstabes durch die Hohlkugel und gleichzeitig den Anschluss von Streben (2) teilweise an die Hohlkugel und teilweise am durchgeführten Stab.
In Fig. 3 ist ein Raumfachwerkteil bestehend aus zwei Kugelknoten (1) und (1') dargestellt, die durch die Streben (2) unter Bildung eines (räumlichen) Stahifachwerkes verbunden sind.
Die Fachwerkstäbe sind im unteren Bereich der Zeichnung als Rohre (3), die durch die Hohlkugel (1') hindurchgeführt und angeschweisst werden und Rohre (3qu), die an die Hohlkugel stumpf angeschweisst sind, ausgebildet. Die Hohlkugel (1') hat somit nur die Aufgabe, die Kräfte aus den Streben (2') in den durchgeführten Stab (3) und den quer dazu liegenden Stab (3qu) einzuleiten. Der durchgeführte Stab bewirkt eine Verstärkung der Kugel auch in der Querrichtung.
Ebenfalls im unteren Teil der Zeichnung des Fachwerksträgers ist durch strichlierte Linien dargestellt, dass auch Fachwerksstäbe (3') durch die Kugel geführt werden können, die im Knotenpunkt eine Krümmung aufweisen bzw. im Knotenpunkt geknickt sind.
Im oberen Teil der Zeichnung ist ein T-Profil (4) als Gurt dargestellt, welches mit seinem Steg durch einen Schlitz der Kugel geführt ist und dort angeschweisst wird. Am Flansch des T-Profiles (4), der in einer Ebene mit dem des Querstabes (4 qu) liegt, kann dadurch leicht die Dachhaut bzw. ein Fussboden montiert werden, ohne dass zusätzliche Träger bzw. Sparren notwendig sind.
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rod, preferably the belt rod, in particular centrally, is passed through the knot.
Steel trusses, in particular space trusses, are known in which the truss rods are welded to node elements. This construction has the disadvantage that the full bar forces of the truss bars have to be connected to the node elements.
As a result, hollow spheres are relatively large, thick-walled and the connection welds are subjected to high stress.
Continuous bars through a ball knot are known from GB PS 366 951 (Fig. 4). However, since the connecting rods are connected to the surface of the sphere perpendicular to it, the force flow goes beyond the thickness of the sphere. The weld seams are subject to high stress and the ball size is determined by the space required by the connecting rods. DE-AS 1 116 374 discloses a similar construction, the continuous rod being replaced by an intermediate wall. An at least partial connection of the rods to one another, that is to say a direct adhesion, is not disclosed. The DE-AS 1 261 300, which shows a weldable plug-in construction, and the AT-PS 275 117 (composite construction with tension members) also lie in this sense in addition to the invention.
The invention has set itself the task of reducing the ball wall thickness and the ball volume on the one hand, and reducing the welding effort for the connection of the truss rods on the other hand.
The invention is characterized in that at least some of the diagonal rods are at least partially connected to both the belt rod and the node element. Furthermore, by carrying out a rod through the ball knot, the transverse contraction of the ball when stressed by other rods connected to the ball is reduced and the ball is additionally stiffened and its load-bearing capacity is increased.
In the area of the ball knot, the rod carried out in combination with the ball knot creates a reinforcement, so that it is also possible not to connect struts completely to the ball knot, but only to connect them partially and to connect the remaining part to the continuous, non-weakened rod by welding .
A great advantage of the invention lies in the fact that the knot is made smaller by the inner rod connection, and thus the half-timbered rod appears slimmer, and that the manufacturing and assembly effort is reduced by the knot according to the invention.
The construction described in this way can be varied even further by using T-profile belts instead of pipes - usually in an eccentric arrangement. The external flange is arranged outside the ball and only the webs are passed through the ball. In this way, a supporting grate with flat top surfaces can be created as a girder for a room framework.
The present invention is illustrated in the drawings by comparing the prior art with the invention in three figures, for example.
Fig. 1 shows a knot formation according to the prior art, in which all truss rods (2) are directly welded to the hollow ball of the truss node (1).
Fig. 2 shows an example of the new node with the implementation of a truss through the hollow ball and at the same time the connection of struts (2) partly to the hollow ball and partly to the rod.
In Fig. 3, a space frame part consisting of two ball nodes (1) and (1 ') is shown, which are connected by the struts (2) to form a (spatial) steel framework.
The truss rods are formed in the lower area of the drawing as tubes (3) which are passed through and welded through the hollow sphere (1 ') and tubes (3qu) which are butt welded to the hollow sphere. The hollow ball (1 ') thus only has the task of introducing the forces from the struts (2') into the rod (3) and the rod (3qu) lying transversely thereto. The rod carried out also strengthens the ball in the transverse direction.
Also in the lower part of the drawing of the truss is shown by dashed lines that truss bars (3 ') can also be guided through the ball, which have a curvature in the node or are bent in the node.
In the upper part of the drawing, a T-profile (4) is shown as a belt, which is led with its web through a slot in the ball and is welded there. On the flange of the T-profile (4), which lies in one plane with that of the crossbar (4 qu), the roof skin or a floor can easily be installed without the need for additional beams or rafters.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT213291A AT400600B (en) | 1991-10-25 | 1991-10-25 | Joint element for steel frameworks |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT213291A AT400600B (en) | 1991-10-25 | 1991-10-25 | Joint element for steel frameworks |
Publications (2)
Publication Number | Publication Date |
---|---|
ATA213291A ATA213291A (en) | 1995-06-15 |
AT400600B true AT400600B (en) | 1996-01-25 |
Family
ID=3528456
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT213291A AT400600B (en) | 1991-10-25 | 1991-10-25 | Joint element for steel frameworks |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT400600B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1327729A1 (en) * | 2002-01-10 | 2003-07-16 | Metka, Gesellschaft m.b.H. | Lattice girder for building stages, scaffoldings or the like |
FR2993291A1 (en) * | 2012-07-13 | 2014-01-17 | Stx France Sa | Nodal junction part for connecting metal tube to metal element of foundation structure i.e. jacket, of offshore oil rig or wind mill, has openings that are delimited with set of edges of metal part for junction of nodal part to tube |
CN106121038A (en) * | 2016-08-18 | 2016-11-16 | 安徽富煌建筑设计研究有限公司 | A kind of prestressing force cable body anchorage ball node |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB366951A (en) * | 1930-11-05 | 1932-02-05 | Aubrey Frederic Burstall | Improvements in or relating to the fabrication of metallic structures |
DE1116374B (en) * | 1955-06-21 | 1961-11-02 | Mannesmann Ag | Junction training for trusses made of steel tubes |
DE1261300B (en) * | 1965-04-22 | 1968-02-15 | Huennebeck Ag | Diamond framework |
AT275117B (en) * | 1966-07-27 | 1969-10-10 | Ernst Baumann | Planar or spatial framework formed from compression and tension elements |
-
1991
- 1991-10-25 AT AT213291A patent/AT400600B/en not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB366951A (en) * | 1930-11-05 | 1932-02-05 | Aubrey Frederic Burstall | Improvements in or relating to the fabrication of metallic structures |
DE1116374B (en) * | 1955-06-21 | 1961-11-02 | Mannesmann Ag | Junction training for trusses made of steel tubes |
DE1261300B (en) * | 1965-04-22 | 1968-02-15 | Huennebeck Ag | Diamond framework |
AT275117B (en) * | 1966-07-27 | 1969-10-10 | Ernst Baumann | Planar or spatial framework formed from compression and tension elements |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1327729A1 (en) * | 2002-01-10 | 2003-07-16 | Metka, Gesellschaft m.b.H. | Lattice girder for building stages, scaffoldings or the like |
FR2993291A1 (en) * | 2012-07-13 | 2014-01-17 | Stx France Sa | Nodal junction part for connecting metal tube to metal element of foundation structure i.e. jacket, of offshore oil rig or wind mill, has openings that are delimited with set of edges of metal part for junction of nodal part to tube |
CN106121038A (en) * | 2016-08-18 | 2016-11-16 | 安徽富煌建筑设计研究有限公司 | A kind of prestressing force cable body anchorage ball node |
Also Published As
Publication number | Publication date |
---|---|
ATA213291A (en) | 1995-06-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ELJ | Ceased due to non-payment of the annual fee |