Classifications

• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
  • E01D19/00—Structural or constructional details of bridges
  • E01D19/06—Arrangement, construction or bridging of expansion joints
• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
  • E01D19/00—Structural or constructional details of bridges
  • E01D19/06—Arrangement, construction or bridging of expansion joints
  • E01D19/062—Joints having intermediate beams

Definitions

• the invention relates to a toothed plate arrangement for a device for bridging expansion joints on bridges or similar structures with a joint between the bridge and the foundation.
• the invention further relates to a method for fastening such a toothed plate arrangement on the bridging device and a bridging device which comprises the toothed plate arrangement according to the invention.
• Bridge structures are sometimes subject to extreme expansions due to the large temperature fluctuations that occur in nature.
• the expansion path that occurs is bridged by expansion collar bridging constructions, on the one hand to allow a safe and, on the other hand, to comfortably drive over these expansion joints.
• the total bridge expansion path is divided into individual gaps with a maximum width of 80 mm. These gaps must be run over by the road vehicles. The gap width of 80 mm was considered reasonable, both in terms of the comfort for the vehicles and the noise generated when rolling over.
• the cover plates are detachably connected to the carriers by screws in order to be able to install the elastic sealing tapes underneath or to replace them after damage.
• These screw connections are exposed to shocks, impacts and vibrations from the vehicles traveling over them. There is a risk that the screw connection will loosen or loosen.
• the fact that the cover plate rests on the adjacent supports can cause rattling or impact noises due to vibrations, the effects of building movements and tire forces.
• the top plates cover the adjacent joint edge profiles or the lamellae in such a way that the sealing tape is not accessible from above. Even if the slats were pushed apart. As a result, when installing the sealing tapes or replacing them, the plates must first be unscrewed, the sealing tapes inserted, and the plates then screwed on again. Because of this screw connection, conventional bridging constructions cannot be retrofitted with this construction, since the lamellas would have to be provided with holes for fastening the plates, which would weaken the cross-section and thereby reduce the fatigue strength of the lamellas subjected to alternating bending.
• the plates are now not screwed to the lamella, which prevents rattling noises, but the welding or bonding of the plates to the top of the lamella shown in the publication has disadvantages.
• the lower edges of the Plates welded to the top of the slat. Part of the weld seam is in the difficult to access area between the lamella edges and the overlying toothed plates, which makes subsequent welding of the toothed plates on the lamellae of built-in bridging devices more difficult.
• an adhesive connection can also be provided, but the adhesive effect of an adhesive connection compared to a weld is significantly lower, so that the plate can come loose over time.
• the object of the invention is to provide a tooth plate arrangement for a bridging device, a method for fastening such a tooth plate arrangement to a bridging device and a bridging device which includes such a tooth plate arrangement, which secure and firm connection between the bridging device and Tooth plates enables, the connection is simple and inexpensive to manufacture and has a higher long-term durability.
• a tooth plate arrangement according to claim 1 a method for fastening such a tooth plate arrangement on a bridging device according to claim 23 and a bridging device according to claim 27 in that the tooth plate has at least one opening extending from its top to its underside for attaching a weld having.
• This opening creates an easily accessible area for the attachment of welds, the attachment of the weld seam becoming independent of the edge shape of the respective tooth plate. Because these weld seams are only freely accessible from above, retrofitting already installed bridging devices with toothed plates is possible in a simple manner, and the weld seams can also be checked well.
• the opening is cylindrical.
• the opening is funnel-shaped with one of the tooth plate formed on the top to the underside of the tooth plate increasing diameter. Since the opening is usually filled with a potting compound, such as bitumen, after the tsarine plate has been welded to the lamella, a funnel-shaped opening brings about a better hold of the potting compound in this opening.
• the edge of the opening on the upper side of the tooth plate is rounded, as a result of which sharp edges are avoided.
• the toothed plate according to the invention preferably consists of a foot part which is provided for fastening on the top side of the slats and of a flange part which adjoins the foot part.
• the foot part is essentially oval in shape at its edge, so that after fastening on the top side of the slats, it is at a short distance from the slat edges.
• This oval shape ensures in particular that there is no protrusion of the foot part over the slat edges when the tooth plate is arranged obliquely on the slat. Since the edge of the foot part always comes close to the edges of the top of the lamella in such an oval shape, the foot part provides a large contact surface of the tooth plate on the top of the lamella.
• the tooth plate has a seal on its underside, which creates a seal between the top side of the lamella and the underside of the tooth plate after the tooth plate is fastened to the lamella.
• This seal ensures that no moisture can penetrate into the space between the underside of the toothed plate and the top of the lamella, which could lead to corrosion of the weld seam provided at the opening of the toothed plate, which improves the long-term durability of the lamella.
• At least one groove encircling the opening is provided on the underside of the toothed plate, which is provided in particular for receiving sealing compound.
• a recessed area adjoining the groove and extending radially outward is provided.
• the groove preferably runs in such a way that after the tooth plate is attached to the top of the lamella, it is at a short distance from the edges of the lamella. This can be achieved in particular in that the groove is not circular around the opening, but has an oval shape. This makes it easy to apply corrosion protection material (eg corrosion-resistant paint) between the top of the lamella and the underside of the toothed plate.
• corrosion protection material eg corrosion-resistant paint
• an essentially wedge-shaped recess is provided for receiving a seal, preferably a rubber ring.
• a recessed section extending radially outward from the edge of the opening on the underside of the toothed plate is provided, to which the support areas of the underside of the toothed plate adjoin. This makes it possible to define defined contact areas of the tooth plate on the lamella.
• the recessed portion is preferably made by forging.
• the tooth plate arrangement is constructed in three parts.
• the edges of the tooth plates can be wave-shaped, but a zigzag shape of the edges of the tooth plates is also possible.
• the toothed plates which are provided for arrangement on middle lamellae of a bridging device, are formed by individual rhomboid-shaped bodies, and the teeth of the toothed plates preferably have an angle of approximately 60 °, which makes it possible that after Fastening the tooth plates on the sipe on the one hand allows a sufficiently large gap between two plates to insert a sealing tape, and on the other hand there are enough teeth per tire width to effect an effective noise reduction.
• a body can also be used with rhombic bodies connected to one another by a web.
• individual rectangular bodies are used as tooth plates.
• these bodies are also connected to one another via webs.
• the tooth plates are provided with a layer of elastic, abrasion-resistant material, the layer preferably being applied on its upper sides.
• the method according to the invention for fastening the tooth plate arrangement according to the invention to the lamella of a bridging device is carried out as follows: In a first step, the tooth plates are placed on the top of the lamella. In the following, the tooth plates are then pressed onto the top of the lamella, so that a full-surface support of the underside of the tooth plate is created on the top of the lamella. Finally, the tooth plate is welded to the lamella on the edge of the opening located on the underside of the tooth plate, and in a last step the opening is sealed with a casting compound, e.g. Bitumen, filled up. By filling the opening with bitumen, the weld edge is also sealed from the top of the tooth plate, so that corrosion of the weld seam is avoided. Furthermore, a smooth surface of the top of the tooth plate is created, whereby noise is further reduced.
• a casting compound e.g. Bitumen
• sealing compound is filled into the groove and / or the possibly provided recessed area adjoining the groove before the tooth plates are pressed on. This causes the sealing compound to be pressed radially outward from the groove and / or the recessed area when the tooth plate is pressed on. This results in an improved seal between the tooth plate and the top of the lamella.
• the teeth of the tooth plates are placed obliquely on the lamella. This is done in particular if the direction of ascent of the expansion joint is not perpendicular to the direction of extension of the lamella. The angle of the central axis of the tooth plates to the direction of expansion of the lamella is approximately 60 °.
• the bridging device according to the invention is used in particular in bridge construction for bridging expansion joints and is characterized in that it comprises the toothed plate arrangement according to the invention just described.
• the teeth of the toothed plate arrangement are supported so that they cantilever over the joint and their length is dimensioned such that when the middle plate is moved in connection with the lamella, a vertically continuous gap between two adjacent middle plates which is freely accessible from above in the horizontal direction and two adjacent slats or between the central plate and the edge plate, as well as the slat and the edge support, so that a sealing tape can be inserted or removed between the slats or slats and the edge supports.
• the bridging device is designed such that the projection of the teeth of the toothed plate arrangement in the rest position of the bridging device is provided with a horizontally variable gap between the outer surface of the teeth and the adjacent lamellae or edge supports.
• the device is arranged obliquely to the direction of the course of the road, the central axis of the teeth of the toothed plate arrangement and crossbeams, which are provided under the slats also arranged obliquely, running in the direction of the course of the road.
• a wave-shaped or zigzag-shaped gap is provided between two adjacent plates, which is approximately half the width of one underneath lying gap between two adjacent slats. This results in a particularly good noise reduction.
• the teeth of the toothed plate on adjacent lamellae are arranged, in a further exemplary embodiment, essentially mutually offset in the direction of expansion of the lamellae.
• the toothed plate arrangement is arranged on the lamellae in such a way that the tips of toothed plates arranged on adjacent lamellae and essentially opposite one another overlap with one another in the opening direction on the bridging device. This further improves noise reduction.
• Fig. 1 shows a cross section along the line A-A of Fig. 2 through a device for bridging expansion joints for bridges, the device having the toothed plate arrangement according to the invention
• Figure 2 is a top view of the device of Figure 1;
• Fig. 3 is a top view of the device of Fig. 1 with the center plate shifted;
• FIG. 5 is an embodiment according to FIG. 4 with a displaced lamella
• 6 is a further embodiment of the invention with tooth plates in a rhombic shape, the teeth of the tooth plates being arranged perpendicular to the direction of the lamellae;
• FIG. 7 is an embodiment of the invention with diamond-like tooth plates, the teeth of the tooth plates being arranged obliquely to the direction of the lamellae;
• Fig. 11 is a sectional view of the diamond-shaped body of Fig. 6 along line B-B;
• Figure 12 shows a sectional view of a diamond-shaped body similar to the body of Figure 11;
• Fig. 13 is a sectional view taken along the line C-C of Fig. 11.
• FIG. 1 shows a cross section through a device 1 for bridging expansion joints on bridges.
• a joint 4 is left to accommodate the bridge expansion in the event of temperature fluctuations.
• the joint 4 is covered with a multi-part toothed plate arrangement 8 lying in the plane of the roadway surfaces 7.
• the toothed plates 20 of the toothed plate arrangement are fastened on the upper side of lamellae 21 arranged between the expansion joints, and sealing strips 23 are provided between the lamellae and between the two edge supports 24 of the expansion joint and the respective adjacent lamellae.
• the tooth plate arrangement shown in Fig. 2 shows a wave-shaped embodiment.
• the wave troughs lie above the slats 21 and the wave crest 26 protrudes beyond the upper slat edges.
• the underside of the protruding corners or bulges of the tooth plates 20 are higher than the upper lamella surface. This allows the dental plates do not touch the slats, as indicated by the arrow 17 in FIG. 1, thereby avoiding knocking or rattling noises that would occur between the slats 21 and the plates 20.
• the tooth plates 20 also have through openings arranged at regular intervals, the through openings always lying above the top of a lamella and the tooth plates being welded to the lower edge of the through openings on the top side of the lamella.
• Both the embodiment of a toothed plate arrangement shown in FIGS. 2 and 3, as well as the exemplary embodiments according to FIGS. 4 to 7, include fingertips, the angle of which at the tip of the imaginary isosceles triangle 26, 36, 46, 56 is approximately 60 °, thereby increase the flank spacing from plate to plate when pulling apart the adjacent plates.
• This makes it possible to use the sealing tape 23 in a meandering shape from above by bending.
• the critical angle of 60 ° has proven to be advantageous, since with a larger angle, ie with blunt triangles, the distance between the individual fingers becomes too large and too few fingers or teeth are arranged next to one another.
• a ratio of 1: 2 has proven to be the optimal distance ratio of the serpentine or wave-shaped gap 25, 35 between the plate teeth of two center plates to the distance between the slats below. In this case, optimum noise reduction is possible while the slat with the associated center plates can be moved at the same time.
• Fig. 4 shows a device for bridging expansion joints on bridges, which is arranged obliquely to the direction of the roadway, whereby a noise reduction is obtained by the inclined driving of the vehicles on the center plates or the slats below.
• the plate teeth of the plates 30 are arranged asymmetrically in this embodiment to enable the plate teeth to point in the direction of travel of the vehicles.
• FIG. 6 and 7 show further embodiments of the tooth plate arrangement according to the invention, the tooth plates now being formed from individual rhomboid-like bodies 40. These bodies each have a central opening 9 for welding the bodies to the lamella 41 underneath. As can be seen from FIG. 6, the tips of the bodies are arranged perpendicular to the lamella 41 and by moving the middle lamella in FIG. 6, the gap 45 is enlarged to such an extent that it is possible to insert a sealing tape. From FIG. 6 it can also be seen that in the direction of the tips of the diamond-shaped bodies, ie perpendicular to the direction of expansion of the lamellae, there is an overlap of adjacent finger tips on adjacent lamellae. The overlap is shown in Fig. 6 and designated a. Such an overlap is desirable because it further reduces the noise reduction when driving over the expansion joint.
• FIG. 7 shows a lamella arrangement similar to that of FIG. 6, but the rhombic bodies are no longer arranged perpendicular to the direction of expansion of the lamellae, but at an oblique angle.
• This arrangement is used when the direction of ascent of the expansion joint is not perpendicular to the direction of expansion of the slats.
• the tips of the bodies are then arranged in such a way that they point in the direction of travel which is indicated by an arrow in FIG. 7.
• there is again an overlap of adjacent tips of the rhombic bodies on adjacent lamellae in the drive-up direction as is indicated by the distance b. This also reduces noise again.
• FIG. 8 shows a continuous tooth plate which consists of rhombic bodies 50 which essentially correspond to the bodies in FIG. 6, the Bodies, however, are connected to one another via a central web 52.
• FIG. 9 shows an embodiment in which the tooth plate arrangement consists of individual rectangular bodies 61 which are arranged obliquely on the lamella 60.
• a continuous tooth plate 70 can also be used, which consists of rectangular sections which are connected to one another via a narrow web 72.
• FIG. 11 shows the cross-sectional view along the line BB of a diamond-shaped body according to FIG. 6.
• the body 40 consists of a foot part exists, which is placed on the top of the slats and which is followed by a flange part projecting beyond the slats.
• the rhombic body 40 has a cylindrical opening 9 with upper rounded edges. This opening is welded to the lamella 41 at its lower edge.
• the weld seam is designated in FIG. 11 with the reference number 11 and is shown in dark color. It can also be seen that a recessed section 12 adjoins the weld seam, which is produced by forging. At this section, the bearing area 13 of the body on the lamella is in turn connected radially outward.
• the contact area is limited by a circumferential groove 14.
• a recessed area 15 adjoins the groove in the direction of the left and right edge of the slat, which extends to the respective edges of the top of the slat.
• the groove and the recessed areas 15 are filled with sealing compound and thus enable the underside of the body to be sealed off from the top of the lamella, thereby preventing corrosion on the weld seam.
• the opening 9 of the body is filled with a potting material 10, preferably bitumen, whereby a smooth upper side of the body 40 is achieved and a further sealing of the weld seam is achieved to avoid corrosion.
• the upper side of the body 40 also has a flattened area 16 in its edge region, by means of which a further reduction in noise is achieved when the body is passed over.
• FIG. 12 shows an embodiment of the diamond-shaped body 40 'similar to that shown in FIG. 11, but the opening is not cylindrical. Instead, there is a funnel-shaped opening, the diameter of which increases from the top of the body to the bottom of the body. This opening is also filled with a potting compound 10. The funnel-shaped design of the opening prevents the potting compound from breaking out of the opening. Furthermore, this embodiment differs from the filling form from FIG. 11 in that instead of a groove 14 filled with sealing compound and a recess 15, a wedge-shaped receptacle 18 is provided on the underside of the body, in which a sealing ring 17 is received. This ring enables the underside of the body to be sealed off from the lamella 41.
• FIG. 12 shows an embodiment of the diamond-shaped body 40 'similar to that shown in FIG. 11, but the opening is not cylindrical. Instead, there is a funnel-shaped opening, the diameter of which increases from the top of the body to the bottom of the body. This opening is also filled with a potting compound 10. The
• 13 shows a plan view of the diamond-shaped body according to FIG. 11.
• the contact areas 13 of the body on the lamella are shown hatched.
• 13 shows in particular that the foot part of the body is essentially oval in shape at its edges. This prevents the foot part from protruding over the top of the slats when the body is placed obliquely on the slats.
• the groove 14 and the recessed area 15 do not extend in a circle around the opening 9, but also run in an oval shape, so that they come as close as possible to the respective edges of the top of the lamella.

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• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Bridges Or Land Bridges (AREA)
• Road Paving Structures (AREA)
• Gears, Cams (AREA)

Priority Applications (7)

Applications Claiming Priority (1)

Publications (1)

Family

ID=8164109

Family Applications (1)

Country Status (7)

Cited By (4)

Families Citing this family (5)

Citations (2)

Family Cites Families (1)

• 2000
  • 2000-09-26 AU AU2000275231A patent/AU2000275231A1/en not_active Abandoned
  • 2000-09-26 KR KR1020027006777A patent/KR100779960B1/ko not_active IP Right Cessation
  • 2000-09-26 DE DE50012790T patent/DE50012790D1/de not_active Expired - Lifetime
  • 2000-09-26 WO PCT/EP2000/009417 patent/WO2002027102A1/de active IP Right Grant
  • 2000-09-26 CN CNB008186626A patent/CN1194141C/zh not_active Expired - Fee Related
  • 2000-09-26 EP EP00964237A patent/EP1327026B1/de not_active Expired - Lifetime
  • 2000-09-26 JP JP2002530454A patent/JP4236923B2/ja not_active Expired - Lifetime

Patent Citations (2)

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