EP0693600B1 - Poutre mixte à vibration amortie - Google Patents

Poutre mixte à vibration amortie Download PDF

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Publication number
EP0693600B1
EP0693600B1 EP95110313A EP95110313A EP0693600B1 EP 0693600 B1 EP0693600 B1 EP 0693600B1 EP 95110313 A EP95110313 A EP 95110313A EP 95110313 A EP95110313 A EP 95110313A EP 0693600 B1 EP0693600 B1 EP 0693600B1
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EP
European Patent Office
Prior art keywords
composite beam
beam according
lower flange
elements
composite
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.)
Expired - Lifetime
Application number
EP95110313A
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German (de)
English (en)
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EP0693600A1 (fr
Inventor
Gernot Wolperding
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.)
Spannverbund Gesellschaft fur Verbundtrager GmbH
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Spannverbund Gesellschaft fur Verbundtrager GmbH
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Publication of EP0693600A1 publication Critical patent/EP0693600A1/fr
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Classifications

    • 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
    • E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
    • E04C3/291—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures with apertured web
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
    • E01D2/02—Bridges characterised by the cross-section of their bearing spanning structure of the I-girder type
    • 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
    • E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
    • E04C3/293—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being steel and concrete
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00—Material constitution of bridges
    • E01D2101/20—Concrete, stone or stone-like material
    • E01D2101/24—Concrete
    • E01D2101/26—Concrete reinforced
    • E01D2101/268—Composite concrete-metal

Definitions

  • the present invention relates to a composite beam as used in construction, and which essentially consists of a first element that can withstand tensile loads and one with the first element firmly connected second, pressure-resistant element.
  • a Composite beams have been known for a long time. He is e.g. B. described in DE 2 206 140.
  • the bending stiffness of the steel girder can, however, be combined with one that can withstand pressure or pressure-resistant element considerably increase.
  • This composite is generally produced with a layer of concrete or concrete slab on the top or top flange of the steel girder rests and which is firmly connected to the steel girder in several places.
  • So-called stud bolts are used for this connection, that is, with a head Provided steel pins that are welded to the top chord and protrude upwards from it.
  • a neutral line that is, a line inside the steel beam, along which the material is neither a compression nor an expansion experiences, exactly along the middle of the connecting the upper chord and the lower chord of the wearer Web.
  • the concrete slab which is firmly cast with the top flange of a double-T beam, has in this the deflection area absorbing pressure forces has a substantially larger cross section than the upper chord of the steel girder and therefore sets a much larger pressure force Resistance to the steel girder's upper chord alone.
  • the one with the top chord tight connected concrete slab allows only a slight compression of the top chord, the neutral one Line moves in the web in the direction of the top chord and for absorbing the tensile forces there is a larger cross section of the steel beam available, due to the displacement resistance to the neutral line even with a given stretch of the lower flange deflection is increased. In other words, the deflection is given Load significantly reduced, the system as a whole more rigid.
  • Such a composite beam which at its two ends on corresponding support surfaces rests at the same time as a structure capable of vibration.
  • the resonance frequency decreases of such a vibrating structure with the increase in the total mass of the System and the increase in the distance between the support points more and more thereby into a frequency range, within which also typical human loads, Vehicles and other machines occur.
  • This resonance phenomenon is from bridges also known to laypeople, for example, marching columns are not in step May cross bridges, because under certain circumstances the step frequency with the resonance frequency of the bridge match, causing them to collapse could.
  • halls that are used by vehicles for example fork lifts, or in which If there are large crowds and move around, there should be no carrying ones if possible
  • DE-A 2 241 327 describes a composite beam with a first element opposite a second element can be moved to a limited extent.
  • the reinforced beam described therein made of steel and / or concrete is designed as a pressure element and only serves to reinforce the Carrier and not the vibration damping.
  • BE-A-795 916 and FR-A-2 128 569 also show composite beams with one another moving elements. With the BE-A-795 916 this flexibility is due to the assembly of the Composite beam limited. When assembled, there is no longer any mobility. At the FR-A-2 128 569 does indeed have a little play against a second element Element. Rather, this serves to compensate for non-adapted expansion coefficients and not the vibration absorption or transmission.
  • the present invention lies in relation to the prior art described above therefore the task is based on a composite beam with the features mentioned create that is improved in terms of its vibration behavior.
  • This object is achieved in that at least a section of the first or second Element compared to the other element or a third, with the first or second element connected element is limited movement, and that a Energy absorbing damping material between the moving elements or sections of the elements is arranged, in which with a relative movement of the relevant Sections generate frictional heat and thus kinetic energy is consumed.
  • the element that can be loaded under pressure and the element that can be loaded under tension are still solid connected with each other, but according to the invention it is nevertheless ensured that the occurring Loads of at least portions of the first and second elements are relative move towards each other, creating friction and every movement and especially Vibrations in the resonance range are damped.
  • first and second elements move relative to each other, but you get the same effect, if a third (or further) element with the first or second element essentially is firmly connected and the mentioned section-wise relative movement and thus a corresponding friction allows. In both cases, every movement of the composite beam dampened by this friction. It is sufficient if the movement play against each other movable sections is on the order of a few tenths of a millimeter and for example at least 0.1 mm. However, the maximum shift should preferably be used of the elements against each other at a permissible maximum static load 0.5 mm, this play being the difference between the positions without and with load understand is.
  • An embodiment of the invention is preferred in which the frictional engagement is performed by Clamping screws are ensured, which in each case in at least one of the connected thereby Elements are included in a mounting hole with play as these clamping screws do not create a firm, immovable connection between the two elements should, but only the parts should be pressed so tightly together that one occurring relative movement between them considerable frictional forces are to be overcome.
  • first element and the second element at at least two clearly spaced apart points are rigidly connected to each other and have no rigid connection between these points.
  • first element and the second element at at least two clearly spaced apart points are rigidly connected to each other and have no rigid connection between these points.
  • connection between these two elements that means head bolts on the double-T beam, only in the end sections of the double-T beam be present so that in the rest of the area, ie over more than 70% of the length of the T-beam away, no fixed connection between the beam and concrete slab is provided. That when such a composite beam is loaded, relative movements between the top chord and the concrete ceiling on top of it, is still associated with the Figures are explained and described.
  • the distance of the points of the elements to be rigidly connected is selectable. This distance can then be chosen so that the natural frequency of the third Element differs significantly from the typically occurring loading frequency and the natural frequency of the basic element differs.
  • the natural frequency of the Basic element also to any harmonics of the fundamental frequency of the third element be spaced.
  • the Invention is generally applicable to all types of composite beams, in which one on train resilient or a tensile load and a resilient or compressive load receiving element are interconnected, regardless of the specific design of these two elements.
  • the element resilient to tension can also be a (rectangular) tube or a truss, or a double T-beam, whose bridge is designed as a truss.
  • the description continues to be based on the embodiment with a composite of double T-beam with an overlying Concrete slab.
  • a further embodiment of the invention thereby contributes to a further improvement and Optimization of the vibration behavior in that a third element is provided, the Mass is at least 3% of the mass of the first element that can withstand tensile loads and that this third element via at least partially loaded elastomer springs on the first or second element is suspended or mounted on one of these elements.
  • a third element over elastomer blocks on the lower flange of a Steel beam is suspended, it has proven to be advantageous if such elastomer blocks and the corresponding third elements are arranged so that the elastomer elements be at least partially pressurized. Furthermore, it has proven to be beneficial if the mass of such a third element is at least 3% and preferably between 4 and 10% of the mass of the first element loaded under tension, the latter is in generally a double-T steel beam with a reinforced concrete slab on the upper or lower flange lies on.
  • the third element is a compact, block-shaped absorber mass is formed, whereby the term "absorber mass” express should be that vibrations are absorbed or "eradicated” by this mass.
  • this absorber mass is in a recess provided in the chamber concrete of a double-T beam, which is the first element that can withstand tensile loads represents.
  • This block can be moved and opened relative to the chamber concrete in its recess Elastomer springs stored in the recess. It is understood that the block in question Recess must have some play to be relative to the wearer and the to be able to move other chamber concrete to absorb vibrations.
  • the inserted block, which forms the absorber mass preferably also consists of Concrete.
  • fire protection is not provided by the chamber concrete formed and the absorber mass made of concrete only serves to reduce the vibrations.
  • one is on the lower flange of a double T steel beam suspended undervoltage provided, which forms or carries the absorber mass.
  • this undervoltage has a tension band, which trapezoidal and thus partially stretched parallel to the lower flange, two Rod-shaped, attached to the ends of the short parallel trapezoidal side and under pressure Resilient parts keep the drawstring at a distance from the lower flange.
  • the relevant rod-shaped Parts can be strips, bars, rods or even plate-shaped elements.
  • the tension band expediently consists of a steel part, preferably one Flat steel element or round steel element. On the undervoltage or on the parallel to the A tension mass is arranged in the lower chord of the tension band, and this too
  • the drawstring itself can be designed to be correspondingly massive and can serve as an absorber mass.
  • This Absorber mass is also attached to rod-shaped or strip-shaped elements that become the Lower flange of the double-T beam and, if necessary, through holes in it extend so that the absorber mass with the help of these rods and via intermediate Elastomer springs are suspended from the double T-beam.
  • the suspension can also a chamber concrete that may be provided on the double-T beam.
  • the chamber concrete can be sectioned into an upper and a lower section Bearing block to be divided, the tensile rods which are the absorber mass wear, are attached to the upper bracket, the lower bracket z. B. on the lower flange of the double-T support and elastomer springs in a gap or space are arranged between the upper and the lower bearing block.
  • the invention particularly preferred in which two sections of a gap between the upper and lower bracket V-shaped relative to each other run, the in these relatively inclined sections Elastomer spring elements are arranged.
  • the rubbing intermediate layers are e.g. formed from two stainless steel plates, the neighboring surfaces are roughened and with a certain contact pressure on each other rub.
  • the contact pressure can be adjusted by a pre-tensioned screw connection in each Application can be set exactly, the screw length and the screw diameter be determined so that in the horizontal displacement generated in the screw permissible bending stresses occur.
  • the rubbing layers can also be made of plastic sheets, the surfaces of which are roughened are exist.
  • the friction surfaces are made of synthetic resin paints, in which fine quartz sand is sprinkled.
  • FIG. 1 A longitudinal section can be seen in FIG. 1 and a longitudinal section in the right partial image Cross section through a composite beam, which essentially consists of a double-T beam 1 Steel and a concrete plate 2 lying thereon, firmly connected to the upper flange 3.
  • An energy-absorbing damping element is designated by 13.
  • the double-T beam 1 consists of an upper flange 3 (also called an upper flange), one Web 4 and a lower flange 5 (lower flange). As can be seen in the longitudinal section, are the two end sections of the upper flange 3 are provided with a plurality of head bolts 6, which are fixed Ensure that the concrete slab 2 is anchored to the top chord 3 or to the double-T beam should.
  • FIG. 2 shows forces a and f in the partial images Torque distributions and horizontal shifts between areas of the double-T beam 1 and the concrete slab 2.
  • the normal force curve is in the vertical direction Concrete pressure plate recorded over the length of the beam.
  • the torque line of the Double-T beam initially without considering the coupling to the concrete slab, however with an assumed uniform load from above.
  • the bending moment that occurs is positive according to the usual conventions, but is applied downwards. This essentially results in a parabolic shape with a for the moment line Vertex in the middle between the two support points 7.
  • the deflection of the double-T girder is caused by the head bolts and the concrete pressure plate 2 1 a counterforce because the head bolts 6 due to the deflection tend to be moved towards each other from the two ends, this movement however, the extensive incompressibility of the concrete slab 2 stands in the way. Because in the concrete slab 2 there is a uniform pressure distribution in the longitudinal direction, are accordingly on the Head bolts 6 acting at the two opposite ends, the head bolts exerted forces away from each other with respect to the neutral line 17 of Effectively attack the double-T beam 1 using a lever. This causes a constant, in comparison bending moment opposite to the previously considered deflection, which in Figure 2c is reproduced.
  • FIG. 2d The total torque line resulting from the superimposition of the bending moment line 2b and by coupling to the concrete pressure plate 2nd is shown in Figure 2d.
  • Figure 2e shows the normal force line of the steel beam of the is exposed to a tensile load for reasons of balance with the concrete compressive force.
  • FIG. 2g is the schematic Amount of the relative displacement plotted over the length of the beam.
  • FIG. 3 Another embodiment of the invention is shown in FIG. 3.
  • an additional lower base plate 10 is attached to the lower flange 5.
  • a firm connection 11, for example by welding, is in turn only at the ends of the base plate 10 and the lower flange 5.
  • clamping screws 12 ensure that the two elements 10, 5 in any case remain in frictional engagement with one another.
  • connection 11 between the base plate 10 and the lower flange 5 deliberately a distance between the base plate 10 and the lower flange 5 is produced so that a gap or a gap 15 is formed.
  • Different attenuators can be inserted into this gap, for example one Hose filled with a viscous material, a gel or the like.
  • At the Bending of the composite girder according to FIG. 5 again results in relative displacement and also deformations, in particular a narrowing of the gap 15, so that here again Deformation and friction work is done, which strongly dampens the movements and the occurrence of resonance vibrations at least largely resonance amplitudes prevented.
  • Clamping screws 12 are provided, by means of which the base plate 10 is tightened according to FIG. 3 the lower flange 5 is to be pressed in order to make the frictional forces correspondingly large.
  • These clamping screws are expediently arranged precisely where the strongest Relative movements between the lower flange 5 and the base plate 10 occur.
  • the base plate 10 is there is freely tensioned and can swing like a string.
  • the clamping screws 14 are in this Case primarily intended for the natural frequency of the vibratable base plate 10 increase.
  • the carrier can therefore be chosen more easily and with a smaller profile cross section than this is possible due to the safety design based on conventional criteria.
  • a composite carrier can be seen in FIG. 6 in a side view or in a longitudinal section, which consists of a double-T steel beam 1 and a concrete slab 2 fastened thereon.
  • the Both ends of the carrier 1 rest on supports 7.
  • the connection between steel girders 1 and concrete slab 1 takes place, as in the previous embodiments, near the Support area by protruding into the concrete and on the upper chord of the steel girder welded head bolts.
  • a trapezoidal tension band 21 On the lower flange 5 of the steel beam 1 is a trapezoidal tension band 21 with its attached both ends near the support points 7. Two rigid bars, plates or webs 22 tension the drawstring 21 downwards into the trapezoid shape mentioned.
  • the drawstring can consist of a plate or band-shaped steel element. In the middle area, in which the drawstring 21 otherwise between the two end points of the short trapezoidal side would sag, it is via rods or plates 23 and intermediate elastomer springs 27 suspended from the lower flange 5 of the steel beam 1.
  • a preferred way of suspending the tension band 21 in the middle between the bars 22 can be seen in cross section according to FIG. 7.
  • this bearing block 25 consisting of two there may be separate sections, which are provided on each side of the web, on the other hand, however, recesses can also be provided in the web, through which at least in sections a connection between the two sides of the web 4th arranged bearing block parts 25 can be produced.
  • the lower bracket 25 has two walls sloping relative to each other V-shaped, which is also characterized by a horizontal lower Section can be connected.
  • the upper bearing block 26 is complementary to this, that is to say it has a cross section Trapezoidal shape with two V-shaped outer walls running relative to each other, which are the same Have slope like the V-shaped inner walls of the lower bracket 25, where that both bearing blocks 25, 26 complement each other.
  • the bearing block 26 is relative raised to the pedestal 25, so arise between the inclined External walls corresponding column, in which elastomeric springs 27 or elastomer blocks are arranged.
  • the rods or are on rods 28 and possibly also cross struts Web plates 23, on which in turn the absorber mass or the drawstring 21 hang, with the upper bracket 26 connected.
  • FIG. 8 shows another variant of a vibration damping system according to the presented present invention.
  • the composite beam 1 according to Figure 8 consists of the upper concrete slab 2 and a double-T steel beam 1.
  • the connection between these two elements is done in the same way as in the previously described embodiments.
  • Embodiment are defined between the upper flange 3, lower flange 5 and web 4 Gaps filled with so-called "chamber concrete" 32, the one with a Reinforcement 8 is provided.
  • this chamber concrete 32 forms an optical cladding of the steel beam 1, but primarily serves to protect the steel beam 1, in particular when a possible fire. If steel girders in the event of fire are exposed to direct flame or generally exposed to intense heat, occurring, high temperatures quickly lose strength, so that the composite carrier then breaks altogether under the existing load.
  • a recess is provided in the chamber concrete, in which a as Absorber mass serving block 30 is mounted on elastomer springs 27.
  • the recess and the Block 30 are designed so that block 30 essentially fills the recess, wherein however, all around small joints remain, so that the block supported on the elastomer springs 27 30 can move relative to the rest of the chamber concrete 32 and the steel beam 1. Similar to the previously described embodiment, they may then occurring vibrations of the system through relative movements between the Block 30 and the rest of the system due to the coupling by the elastomer springs 27 subdued.
  • the block 30 is adapted to the shape of the corresponding recess takes over he function in this area of the chamber concrete 32 as flame or fire protection. It is particularly expedient if the block 30 is also made of concrete. To in this The area of the recess can improve the protection against heat even further can also be provided with gradations, and the block 30 then has corresponding projections on, so that block 30 and chamber concrete 32 overlap each other in the area of the joints, so that the joints 31 are completely covered.
  • the springs 27 consist of plates or blocks made of an elastomer Material, of course, such elastomer springs can also by others damped spring system can be replaced, for example by a combination of normal Steel springs with shock absorbers, through hydraulic multi-chamber systems, in which by Relative movements forced a liquid to flow back and forth due to a bottleneck will etc.
  • FIG. 9 shows a section of a cross section through the steel beam 1 which can be subjected to tension and an adjacent pressure-resistant second or third element 3, which in one Area in which parts 1, 2 can in principle be displaced relative to one another by small distances are, but are held together by a clamping screw 12, which has a Load distribution plate 33 presses a pair of roughened steel plates 34 together one plate with the first element and the other plate with the second element connected is.
  • the Tensioning screw 12 is designed to occur during this displacement
  • a special sliding layer 35 is provided, e.g. consists of slide films or a good lubricious coating, so that to the force which is required in this area to move elements 1 and 2 against each other move, contribute almost exclusively to the roughened plates 34.
  • These plates 34 can of course consist of a material other than steel and can especially plastic plates.
  • the plates 34 can also by one Synthetic resin painting, which e.g. Quartz sand is added.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Bridges Or Land Bridges (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Vibration Prevention Devices (AREA)
  • Springs (AREA)
  • Laminated Bodies (AREA)

Claims (22)

  1. Poutre composite, constituée d'un premier élément (1) pouvant être chargé en traction et d'un deuxième élément (2), pouvant être chargé en compression, assemblé à demeure au premier élément (1), caractérisée en ce qu'au moins un segment du premier élément ou du deuxième élément peut subir un déplacement limité par rapport à l'autre élément, c'est-à-dire respectivement au deuxième ou au premier élément, ou par rapport à un troisième élément, assemblé au premier ou au deuxième élément, et en ce qu'un matériau d'amortissement (13, 18) absorbant l'énergie est disposé entre les segments, mobiles l'un par rapport à l'autre, des éléments (1, 2, 10).
  2. Poutre composite selon la revendication 1, caractérisée en ce que le jeu de déplacement maximal d'éléments mobiles l'un par rapport à l'autre des éléments est d'au moins 0,1 et de préférence d'au moins 0,5 mm.
  3. Poutre composite selon la revendication 1 ou 2, caractérisé en ce que le jeu de déplacement maximal de segments, mobiles l'un par rapport à l'autre, des éléments (1, 2, 8, 10) est d'au plus 10 mm.
  4. Poutre composite selon l'une des revendications 1 à 3, caractérisé en ce que les segments mobiles l'un par rapport à l'autre sont en prise directe ou indirecte, par frottement, l'un avec l'autre.
  5. Poutre composite selon la revendication 4, caractérisée en ce que la prise par frottement est réalisée par des vis de serrage (12), qui sont logées avec jeu dans des trous, et qui appuient l'un contre l'autre les segments, mobiles l'un par rapport à l'autre, des éléments (1, 2, 10).
  6. Poutre composite selon l'une des revendications 1 à 5, caractérisée en ce que le premier et le deuxième éléments sont reliés l'un à l'autre en au moins deux points disposés relativement loin l'un de l'autre, de préférence dans la zone des extrémités de la poutre composite.
  7. Poutre composite selon l'une des revendications 1 à 6, caractérisée en ce que le troisième élément comporte deux éléments d'assemblage, ou plus, au voisinage de ses extrémités ou à des distances différentes, de sorte que la distance maximale entre deux éléments d'assemblage soit sélectionnable.
  8. Poutre composite selon l'une des revendications 1 à 7, caractérisée en ce que le premier élément (1) pouvant être chargé en traction est une poutre en H.
  9. Poutre composite selon la revendication 8, caractérisée en ce que les espaces libres formés entre l'âme (4) et la membrure supérieure (3) et la membrure inférieure (5) sont remplis de béton de remplissage (16).
  10. Poutre composite selon la revendication 9, caractérisée en ce que des éléments (8) chargés en traction sont prévus dans le béton de remplissage au voisinage de la membrure inférieure (5).
  11. Poutre composite selon l'une des revendications 1 à 10, caractérisée en ce que l'élément chargé en traction est une poutre en treillis.
  12. Poutre composite selon la revendication 11 et l'une des revendications 8 à 10, caractérisée en ce que l'âme d'une poutre en H est formée d'un treillis.
  13. Poutre composite selon l'une des revendications 1 à 12, caractérisée en ce que, de préférence en position latérale contre la membrure inférieure (5), et sur une plaque de base (10) configurée de préférence plus large que la membrure inférieure (5), sont fixés des blocs élastomères (18), qui absorbent les forces de cisaillement en présence d'un déplacement relatif de la membrure inférieure (5) et de la plaque de base (10).
  14. Poutre composite selon l'une des revendications 1 à 13, caractérisée en ce que le troisième élément a une masse d'au moins 3 % de la masse du premier élément (1), et est, par l'intermédiaire de ressorts (27) en élastomère chargés en compression, suspendu au premier ou au deuxième élément (1, 2) ou logé sur l'un de ces éléments (1, 2).
  15. Poutre composite selon la revendication 14, caractérisée en ce que la masse du troisième élément est comprise entre 4 et 20 % de la masse du premier élément.
  16. Poutre composite selon l'une des revendications 1 à 15, caractérisée en ce que le troisième élément est configuré comme une masse d'amortissement compacte en forme de bloc.
  17. Poutre composite selon la revendication 16, caractérisée en ce qu'on prévoit un évidement dans le béton de remplissage d'un premier élément (1) configuré sous la forme d'une poutre en acier en H, la masse d'amortissement étant logée dans cet évidement sur des ressorts en élastomères.
  18. Poutre composite selon la revendication 16, caractérisée en ce que la masse d'amortissement (30) est elle aussi constituée de béton, et, dans l'évidement prévu à cet effet, recouvre presque complètement l'âme (4) de la poutre en acier.
  19. Poutre en acier selon l'une des revendications 1 à 18, caractérisée en ce que l'on prévoit, contre la membrure inférieure (5) (semelle inférieure) d'une poutre en acier en H, servant de premier élément (1), une structure de sous-contrainte (20), suspendue à la membrure inférieure (5) de la poutre en acier.
  20. Poutre composite selon la revendication 19, caractérisée en ce que la structure de sous-contrainte est constituée d'un tirant (21) tendu parallèlement à la membrure inférieure (5), tirant qui, avec la membrure inférieure, définit une forme trapézoïdale, deux pièces en forme de barre, s'appuyant sur la plus petite des bases parallèles du trapèze et pouvant être chargées en compression, étant maintenues à distance de la membrure inférieure (5).
  21. Poutre composite selon la revendication 19 ou 20, caractérisée en ce que la structure de sous-contrainte comporte une masse d'amortissement (21), qui est constituée d'un tirant proprement dit ou d'un élément supplémentaire, la masse d'amortissement étant, par l'intermédiaire d'éléments en forme de barre ou de baguette, ainsi que de ressorts en élastomère intercalés, suspendue à la poutre en acier ou à son béton de remplissage.
  22. Poutre composite selon l'une des revendications 1 à 21, caractérisée en ce qu'une ou plusieurs surfaces de frottement et/ou une ou plusieurs feuilles de glissement sont disposées entre des pièces mobiles l'une par rapport à l'autre.
EP95110313A 1994-07-18 1995-07-02 Poutre mixte à vibration amortie Expired - Lifetime EP0693600B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4425310 1994-07-18
DE4425310A DE4425310A1 (de) 1994-07-18 1994-07-18 Schwingungsarmer Verbundträger

Publications (2)

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EP0693600A1 EP0693600A1 (fr) 1996-01-24
EP0693600B1 true EP0693600B1 (fr) 2001-02-07

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EP95110313A Expired - Lifetime EP0693600B1 (fr) 1994-07-18 1995-07-02 Poutre mixte à vibration amortie

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EP (1) EP0693600B1 (fr)
AT (1) ATE199104T1 (fr)
DE (2) DE4425310A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10125741A1 (de) * 2001-05-25 2002-11-28 Gernot Wolperding Schwingungsgedämpftes Trägersystem sowie Verfahren zur Schwingungsdämpfung
CN108867345B (zh) * 2018-09-11 2023-12-29 中建五局土木工程有限公司 一种节省城市桥梁下空间的钢桥梁隐形盖梁结构及其施工方法
DE102019112608A1 (de) * 2019-05-14 2020-11-19 Max Bögl Stiftung & Co. Kg Betonfertigteilplatte und Verbundbauteil mit einer Betonfertigteilplatte
CN111058569B (zh) * 2019-12-27 2021-09-10 西安理工大学 一种多钢梁-混凝土组合超扁梁及扁梁的施工方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1018618A (fr) * 1950-02-08 1953-01-09 Construction composée
US2809074A (en) * 1953-05-05 1957-10-08 Mcdonald James Leonard Structural beam with fire extinguisher
US3260024A (en) * 1962-05-02 1966-07-12 Greulich Gerald Gregory Prestressed girder
FR1544207A (fr) * 1967-09-22 1968-10-31 Poutre métallique composite, à précontrainte
GB1373061A (en) 1971-03-05 1974-11-06 Raaber N Reinforced girder
DE2206140C3 (de) 1972-02-09 1978-06-29 Preflex-Verbundtraeger Gmbh, 6270 Idstein Verbundträger
DE2241327A1 (de) 1972-08-23 1974-02-28 Irnfried Dipl Ing Brendel Verstaerkter traeger aus stahl und/oder beton
BE795916A (fr) 1973-02-26 1973-06-18 Noel Albert D G Elements de construction mixtes 'acier-beton'
DE2455993A1 (de) * 1974-11-27 1976-08-12 Karlheinz Prof Dr Ing Roik Verfahren zum vorspannen von verbundtraegern mit nachtraeglichem verbund, insbesondere brueckentraegern
LU77749A1 (de) * 1977-07-12 1979-03-26 Arbed Verbundtraeger
US4343123A (en) * 1979-07-16 1982-08-10 Roosseno Soerjohadikusumo Composite bridge with precompression system
DE3006010A1 (de) * 1980-02-18 1981-08-20 Oskar Dipl.-Ing. Dr.rer.nat. 8000 München Bschorr Daempfung von bauwerken
FR2627526A1 (fr) * 1988-02-19 1989-08-25 Roret Jean Procede de fabrication d'une structure mixte beton-metal et structure ainsi obtenue
JP2536924B2 (ja) * 1988-05-06 1996-09-25 住友ゴム工業株式会社 免震支承

Also Published As

Publication number Publication date
ATE199104T1 (de) 2001-02-15
EP0693600A1 (fr) 1996-01-24
DE4425310A1 (de) 1996-02-22
DE59509009D1 (de) 2001-03-15

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