DE2444017A1 - Load bearing girder - has upright with transverse web section bearing deformable, tapering thrust fillet - Google Patents

Load bearing girder - has upright with transverse web section bearing deformable, tapering thrust fillet

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Publication number
DE2444017A1
DE2444017A1 DE2444017A DE2444017A DE2444017A1 DE 2444017 A1 DE2444017 A1 DE 2444017A1 DE 2444017 A DE2444017 A DE 2444017A DE 2444017 A DE2444017 A DE 2444017A DE 2444017 A1 DE2444017 A1 DE 2444017A1
Authority
DE
Germany
Prior art keywords
profile
fillet
thrust
web section
cross
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.)
Withdrawn
Application number
DE2444017A
Other languages
German (de)
Inventor
Hermann Dr Ing Danckert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Volkswagen AG
Original Assignee
Volkswagen AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Volkswagen AG filed Critical Volkswagen AG
Priority to DE2444017A priority Critical patent/DE2444017A1/en
Publication of DE2444017A1 publication Critical patent/DE2444017A1/en
Withdrawn legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C3/06Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0408Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section
    • E04C2003/0413Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section being built up from several parts
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0408Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section
    • E04C2003/0421Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section comprising one single unitary part
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0426Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section
    • E04C2003/043Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section the hollow cross-section comprising at least one enclosed cavity
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0426Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section
    • E04C2003/0434Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section the open cross-section free of enclosed cavities
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0443Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
    • E04C2003/0452H- or I-shaped
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0443Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
    • E04C2003/0465Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section square- or rectangular-shaped

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Vibration Dampers (AREA)

Abstract

R.S.J. girder with an upright whose bearing ability is related to the load to be applied, and a web section (3) which, on its side facing the direction of load application, has a thrust fillet (6) which is vertical to the web section (3) when viewed in cross-section. The formation of the thrust fillet (6) is such that before damage due to localised concentrated thrust loads occurs to the upright (2) and the web section (4) which form the profile girder, a plastic deformation of the thrust fillet (6) takes place. The thrust fillet (6) decreases in cross-section upwards away from the web section (3). Both web section (3) and thrust fillet (6) comprise a one-piece profile (1).

Description

Biege träger I)ie Erfindung betrifft einen Biegeträger mit einem bezüglich der aufzunehmenden Kräfte vor zumindest einem Steg und im Querschnitt senkrecht zu diesem verlaufenden Schenkelbereich. Derartige Biegeträger werden bespielsweise als I- oder T-Profil ausgebildet. Mit ihrem relativ langen Steg liegen sie zumindest ungefähr parallel zur Richtung der auf zunehmenden Kräfte, damit ein möglichst hohes Widerstandsmoment vorhanden ist. Bending beam I) he invention relates to a bending beam with a with regard to the forces to be absorbed in front of at least one web and in cross section perpendicular to this leg area. Such bending beams are for example designed as an I or T profile. With their relatively long bridge, they are at least lying roughly parallel to the direction of the increasing forces, so as high as possible Moment of resistance is present.

Die bekannten Biegeträger versagen jedoch häufig dann, wenn sie durch örtlich konzentrierte Stoßkräfte hoch belastet werden, wie dies beispielsweise bei Längsträgern in Eraftfahrzeugen bei seitlichen Stößen häufig der Fall ist.However, the known bending beams often fail when they go through locally concentrated impact forces are highly stressed, as for example at Side members in Eraftfahrzeugen in side impacts is often the case.

Bei aus relativ schwerem Material, wie Stahl, hergestellten Biegeträgern ist die Erklärung hierfür vor allem darin zu sehen, daß dann die Trägheitskräfte infolge )i' großen Trägermasse zu hoch werden. Bei geschlossenen oder offenen Leichtprofilen ergibt sich eine Gefährdung dadurch, daß an der - vorher nicht bestimmbaren - Krafteinleitungsstelle erforderliche Verstärkungen in der Struktur fehlen.With bending beams made of a relatively heavy material such as steel the explanation for this is to be seen above all in the fact that then the inertial forces as a result of) i 'large carrier mass become too high. With closed or open lightweight profiles there is a risk that at the - previously not determinable - force introduction point necessary reinforcements in the structure are missing.

Der Erfindung liegt die Aufgabe zugrunde, einen Biegeträger der eingangs genannten Art so auszubilden, daß er auch bei örtlich konzentrierten Stoßkräften die gewünschte Festigkeit besitzt. Die erfindungsgemäße Lösung dieser Aufgabe ist dadurch gekennzeichnet, daß der Schenkelbereich auf seiner den Kräften zugekehrten Seite eine im Querschnitt senkrecht auf ihm stehende Stoßleiste solcher Auslegung trägt, daß bei örtw lich konzentrierten Stoßkräften vor einer Beschädigung des durch Steg und Schenkelbereich gebildeten Profilträgers eine plastische Verformung der Stoßleiste erfolgt.The invention is based on the object of providing a bending beam of the initially specified called type so that it can also be used with locally concentrated impact forces has the desired strength. The inventive solution to this problem is characterized in that the leg area on its facing the forces Side a bumper bar of such design standing perpendicular to it in cross-section contributes that at locally concentrated impact forces from damage to the through Web and leg area formed profile carrier a plastic deformation of the Bumper strip takes place.

Lurch die Erfindung lassen sich auch billige Beichtbauprofile - in offener oder geschlossener Bauweise - verwenden, ohne daß die Gefahr besteht, daß durch örtlich konzentriert auftretende Stoßkräfte eine gefährliche Beschädigung des Profils auftritt. Diese vorteilhafte Wirkung der bei dem erfindungsgemäßen Bieiräger vorgesehenen Stoßleiste beruht darauf, daß die Stoßleiste einerseits die Wirkung schlagartiger Beanspruchungen durch zumindest teilweise Plastifizierung mildert und sie außerdem zur i'eatigkeitßerhöhung des Trägers beiträgt.With the invention, cheap confessional profiles - in open or closed construction - use without the risk of dangerous damage due to locally concentrated impact forces of the profile occurs. This advantageous effect of the bending beam according to the invention provided bumper strip is based on the fact that the bumper strip on the one hand the effect mitigates sudden stresses through at least partial plasticization and it also contributes to the increase in fatigue of the wearer.

Verwendet man ein Profil aus Leichtmetall, so erhält man außerdem den Vorteil einer Verringerung der Trägheitskräfte infolge Verringerung der Trägermasse gegenüber aus Stahl bestehenden Biegeträgern. Auf jeden Fall werden die Grägheitskräfte, die infolge der Beschleunigung der Trägermasse auftreten, so weit herabgesetzt, daß der Querschnitt des durch Steg und Schenkelbereich gebildeten Profilträgers nicht zerstört wird.If you use a profile made of light metal, you also get the advantage of a reduction in the inertial forces due to a reduction in the carrier mass compared to bending beams made of steel. In any case, the inertial forces which occur as a result of the acceleration of the carrier mass, reduced so far, that the cross section of the profile beam formed by the web and leg area is not destroyed.

Im folgenden wird die Erfindung anhand der beiden figürlich dargestellten Ausführungsbeispiele erläutert. Während Figur 1 die erfindungsgemäße Ausgestaltung eines üblichen Biegeträgers mit I-Profil wiedergibt, bezieht sich Figur 2 auf ein Kastenprofil. In beiden Fällen ist der Biegeträger perspektivisch dargestellt.In the following the invention is shown figuratively on the basis of the two Embodiments explained. While Figure 1 shows the embodiment according to the invention reproduces a conventional bending beam with I-profile, Figure 2 refers to a Box profile. In both cases, the bending beam is shown in perspective.

Betrachtet man zunächst Figur 1, so besitzt der allgemein mit 1 bezeichnete Profilträger einen einzigen Steg 2 zwischen den beiden Schenkelbereichen 3 und 4, von denen der erstgenannte der Krafteinwirkung zugekehrt ist. Die Symmetrieachse des Querschnitts dieser Trägeranordnung ist mit 5 bezeichnet.If one first considers FIG. 1, then the one generally designated by 1 has Profile support a single web 2 between the two leg areas 3 and 4, of which the former is directed towards the action of force. The axis of symmetry the cross section of this carrier arrangement is denoted by 5.

Erfindungsgemäß erstreckt sich in Richtung der Symmetrieachse 5 über die gesamte Länge des Profilträgers 1 die Stoßleiste 6, die einen mit zunehmender Entfernung von dem Schenkelbereich 3 abnehmenden Querschnitt haben kann. Sie ist so dimensioniert, daß bei einem auftretenden Stoß zunächst eine plastische Verformung der Stoßleiste 6 auftritt, ehe - bei Stoßkräften, für die die Trägeranordnung nicht ausgelegt ist - auch eine Beschädigung oder gar Zerstörung des Profilträgers 1 auftritt.According to the invention extends in the direction of the axis of symmetry 5 the entire length of the profile beam 1, the bumper bar 6, the one with increasing Distance from the leg region 3 may have decreasing cross-section. she is dimensioned in such a way that a plastic deformation occurs first when an impact occurs the bumper bar 6 occurs before - at impact forces for which the carrier assembly does not is designed - damage or even destruction of the profile beam 1 occurs.

Während in dem Ausführungsbeispiel nach Figur 1 nur ein Steg 2 vorhanden war, enthält der Profilträger 10 in dem Ausführungsbeispiel nach Figur 2 die beiden Schenkel 11 und 12, die parallel zueinander verlaufen und den ersten Schenkelbereich 13 mit dem zweiten Schenkelbereich-14 verbinden. Zusammengesetzt ist der Profilträger 10 aus dem die Bereiche 11, 12 und 13 aufweisenden U-Profil und dem allgemein mit 15 bezeichneten T-Profil; der Mittelsteg 16 des T-Profils 15 ragt als Stoßleiste nach außen, Die beiden Profile sind durch Schweißverbindungen miteinander starr verbunden.While in the embodiment of Figure 1 only one web 2 is present was, the profile support 10 in the embodiment of Figure 2 contains the two Legs 11 and 12, which run parallel to one another and the first leg area Connect 13 to the second leg area-14. The profile beam is assembled 10 from the U-profile having the areas 11, 12 and 13 and the general with 15 designated T-profile; the central web 16 of the T-profile 15 protrudes as a bumper strip to the outside, the two profiles are rigidly welded to one another tied together.

Während in dem Ausführungsbeispiel nach Figur 1 der gesamte Biegeträger einschließlich der Stoßleiste 6 durch einen Zieh-oder Walzprozeß als einheitliches Profil hergestellt ist, benötigt der Biegeträger nach Figur 2 zwei Profile, nämlich ein U-Profil und ein U-Profil, die damit zusammengeschweißt werden. Auch hier erstreckt sich die Stoßleiste 16 längs der Querschnitts-Symmetrieachse 17.While in the embodiment of Figure 1, the entire bending beam including the bumper bar 6 by a pulling or pulling Rolling process is manufactured as a uniform profile, the bending beam according to FIG. 2 is required two profiles, namely a U-profile and a U-profile, which are welded together with it will. Here too, the bumper strip 16 extends along the cross-sectional axis of symmetry 17th

Bei Verwendung eines Kastenträger-Profils, wie es Figur 2 wiedergibt, stützt sich die Stoßleiste 16 über die beiden Schenkel des Schenkelbereichs 14 auf die Schenkel 11 und 12 des U-Profils ab. Zu der bleibenden Verformung der Stoßleiste 16 tritt hier noch eine gewisse Federung durch die Schenkel des Schenkelbereichs 14 auf, die ebenfalls zur Milderung der schlagartigen Stoßbeanspruchung beiträgt. Der lange Eraftübertragungsweg von der Rraftei-eleitungsstelle an der Stoßleiste 16 bis zu den Schenkeln 11 und 12 des U-Profils sorgt für eine breite KraftserteilumgS so daß die Schenkel 4 und und 5 relativ leicht ausgeführt werden können Dies wiederum hat über die Verringerung der Masse des Biegeträgers einen günstigen Einfluß auf die Widerstandsfähigkeit desselben gegenüber stoßartigen punktförmigen BeanspruchtrngenWhen using a box girder profile, as shown in Figure 2, the bumper strip 16 is supported by the two legs of the leg region 14 the legs 11 and 12 of the U-profile. About the permanent deformation of the bumper bar 16 there is still a certain resilience due to the legs of the leg area 14, which also helps to alleviate the sudden impact stress. The long power transmission path from the power line to the bumper 16 up to the legs 11 and 12 of the U-profile ensures a wide power section so that the legs 4 and 5 and 5 can be carried out relatively easily. This in turn has a beneficial effect on reducing the mass of the bending beam the resistance of the same to shock-like punctiform stresses

Claims (5)

ANSPRÜCHE W Biegeträger mit einem bezüglich der aufzunehmenden Kräfte vor zumindest einem Steg und im Querschnitt senkrecht zu diesem verlaufenden Schenkelbereich, dadurch gekennzeichnet, daß der Schenkelbereich (3) auf seiner den Kräften zugekehrten Seite eine im Querschnitt senkrecht auf ihm stehende Stoßleiste (6) solcher Auslegung trägt, daß bei örtlich konzentrierten Stoßkräften vor einer Beschädigung des durch Steg (2) und Schenkelbereich (4) gebildeten Profilträgers (1) eine plastische Verformung der Stoßleiste (6) erfolgt. CLAIMS W Bending beam with one with respect to the forces to be absorbed in front of at least one web and in cross section perpendicular to this leg area, characterized in that the leg area (3) on its facing the forces Side a bumper bar (6) of this type standing perpendicular to it in cross-section contributes that with locally concentrated impact forces from damage to the through Web (2) and leg area (4) formed profile support (1) a plastic deformation the bumper strip (6) takes place. 2. Biegeträger nach Anspruch 1, dadurch gekennzeichnet, daß die Stoßleiste (6) einen mit zunehmender Entfernung von dem Schenkelbereich (3) abnehmenden Querschnitt besitzt. 2. bending beam according to claim 1, characterized in that the bumper strip (6) a cross-section that decreases with increasing distance from the leg region (3) owns. 3. Biegeträger nach Anspruch 1 oder zwei, dadurch gekennzeichnet, daß Schenkelbereich (3) und Stoßleiste (6) ein einstückiges Profil (1) sind. 3. bending beam according to claim 1 or two, characterized in that that leg area (3) and bumper strip (6) are a one-piece profile (1). 4. Biegeträger nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Stoßleiste (6) auf einer Querschnitts-Symmetrieachse (5) liegt.4. bending beam according to one of claims 1 to 3, characterized in that that the bumper strip (6) lies on a cross-sectional axis of symmetry (5). 5. Biegeträger nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß ein U-Profil (10) und ein T-Profil (15) zusammengesetzt sind, dessen nach außen weisender Mittelsteg die Stoßleiste (16) bildet. 5. bending beam according to one of claims 1 to 4, characterized in that that a U-profile (10) and a T-profile (15) are composed, whose outward facing center web forms the bumper strip (16).
DE2444017A 1974-09-14 1974-09-14 Load bearing girder - has upright with transverse web section bearing deformable, tapering thrust fillet Withdrawn DE2444017A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2444017A DE2444017A1 (en) 1974-09-14 1974-09-14 Load bearing girder - has upright with transverse web section bearing deformable, tapering thrust fillet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2444017A DE2444017A1 (en) 1974-09-14 1974-09-14 Load bearing girder - has upright with transverse web section bearing deformable, tapering thrust fillet

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DE2444017A1 true DE2444017A1 (en) 1976-03-25

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DE2444017A Withdrawn DE2444017A1 (en) 1974-09-14 1974-09-14 Load bearing girder - has upright with transverse web section bearing deformable, tapering thrust fillet

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008064836B3 (en) 2007-02-13 2023-07-20 Torsten Kiefer Mullion strip for attachment to a vertical jamb section of a doorway and mounting device for attachment to the jamb of a doorway

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008064836B3 (en) 2007-02-13 2023-07-20 Torsten Kiefer Mullion strip for attachment to a vertical jamb section of a doorway and mounting device for attachment to the jamb of a doorway

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