Classifications

• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
  • E01C9/00—Special pavings; Pavings for special parts of roads or airfields
  • E01C9/04—Pavings for railroad level-crossings

Definitions

• the invention relates to a level crossing, in which the roadway in the track area is formed by concrete slabs, the space between the two rails of a track being filled by inner slabs, which bridge this space and lead from one rail to the other on the track the inner rail feet are elastically supported, and the outer side of the rails of the track is then arranged with outer plates, which are elastically supported over a strip-shaped area outside the rails with an edge on the outer lying rail feet and are supported on their bodies opposite this edge on support bodies are.
• the concrete slabs forming the roadway are formed from cement-bound concrete and a steel frame embodying the edges of the slabs.
• the presence of a steel frame gives rise to electrical insulation problems in the inner plates if the rails of the track have to be insulated from one another in order to form a signal circuit for track vacancy detection and train-actuated signaling and control processes.
• Difficulties also arise with such rail-like road crossings in the area of the outer plates with plates made of cement-bound concrete and a steel frame, because these outer plates are damaged by the loads acting on them, which have a number of different directions of action due to construction and traffic. It is namely that the outer plates in that they are supported with an edge on the rails of the track, while their outer edge rests on bearing bodies independent of the track, often heavily asymmetrically loaded.
• the railroad crossing of the type mentioned at the outset which is designed according to the invention, is characterized in that the inner plates bridging the space between the rails of a track are frameless, reinforced concrete plastic plates, which consist in particular of polyester bet ⁇ n. With this training, the above-mentioned objective can be met well. It is preferably provided that the outer plates each covering a strip-shaped area on the outer sides of the track are frameless, reinforced concrete plastic plates, which consist in particular of polyester concrete. Plastic concrete is practically not electrically conductive, and the risk of the two rails of a track being short-circuited is practically eliminated due to the frameless construction of the inner plates made of plastic concrete.
• the stone or sand material is not bound by cement, but by a synthetic resin, in particular a bond with a polyester resin.
• the reinforcement is designed on the one hand analogously to the static requirements as in the case of cement-bound concrete slabs, and on the other hand, when designing the reinforcement, its property, which counteracts the occurrence of shrinkage during the manufacture of the slabs, is taken into account.
• the design, in association with the design of the inner plates as frameless plastic concrete slabs provided with reinforcement also surprisingly provides the outer plates in the form of frameless plastic concrete slabs provided with reinforcement significant improvements in the properties of use, without increasing the overall economic outlay, and substantially reduces the maintenance work required, which adversely affects the flow of traffic on rail and road.
• the outer panels which due to their smaller width compared to the inner panels, can be assumed to be less stress than they are with the inner panels, are subjected to highly non-uniform loads, and it can be provided by the design of the outer panels as frameless reinforcement Plastic concrete slabs are surprisingly better able to take this stress into account than with cement-bound concrete slabs that have a steel frame.
• the elimination of the steel frame in the configuration according to the invention is economically advantageous for the outer plates and considerably simplifies production in the case of special forms of plates, such as are required in the area of switches and track extensions.
• top of the plastic concrete slabs is rough as a grain.
• Such training can be achieved in various ways.
• An education that does not require any special manufacturing equipment and has good durability is characterized in that a top layer into which a granular material is introduced, the grains being spaced from one another, is provided.
• the plastic concrete slabs have hollows on their upper side, into which pins or brackets, which are embedded in these slabs, protrude from the hollow wall surface to form points of attack for hoists or the like.
• Such troughs can be made relatively small, so that they do not significantly affect the uniformity of the road surface, and such troughs also do not require any special cover, since if necessary dirt, earth, sand or the like can be removed without any difficulty in order to bring hoists into the To be able to hang in a pin or bracket.
• Securing the plastic concrete slabs against displacement in the longitudinal direction of the track provides for holding bodies which engage in cutouts which are provided on the longitudinal edges of the plastic concrete slabs supported on the rail feet and form a free space for the rail fastening parts, and that these holding bodies are screwed to the track with the rail shark and / or with other rail fasteners, such as concrete sleeper spring nails.
• the holding bodies are thus fixed to the rail fastening elements of the track against longitudinal displacement and in turn hold the concrete slabs against shifting in the longitudinal direction of the track.
• the holding bodies can have the shape of blocks or rods, for example.
• a particularly advantageous embodiment is characterized in that the holding bodies are designed as U-shaped brackets which are fastened at their base to or with the rail retaining screws and come to rest with their legs on the side surfaces of the cutouts. This embodiment is structurally simple and can be easily installed, the installation being facilitated by the elasticity of the stirrup shape and also an advantageous elasticity of the fixing of the concrete slabs being achieved. Fixing the holding body with the spring nails of concrete sleepers is also an option.
• the underside of the outer plates rest on a line-like support of elastic strips which are attached to the support bodies at their edge zone opposite the rails.
• This line-like support of the outer panels on elastic strips results in an advantageous equalization of the stresses occurring in the outer panels under the influence of traffic loads and can be provided for the panels made of plastic concrete without pressure-compensating metal inserts.
• the bearing body has grooves on its upper side, into which the elastic strips are inserted. It is furthermore favorable for a good fit if one provides that the elastic strips have at least two layers of different flexibility, the more flexible layer facing the overlying outer panels.
• traffic loads can also be further improved advantageously in that the elastic strips attached to the bearing bodies, on which the outer plates rest, run continuously under the joint between adjacent outer plates.
• this results in a favorable distribution of the load in the outer panels and also a simplification of the installation manipulation of these panels, if one provides that the outer panels are each supported approximately one third of their longitudinal extent by the elastic strips starting from the joints and thus each Outer plate rests on the elastic strips for approximately two thirds of its length.
• the support bodies are designed in the form of support stones, the length of which corresponds to the length of an outer plate, and that the elastic strips arranged on the individual support bodies are approximately two thirds of the length Have the length of a support body.
• the support body is a cast-in upwardly protruding metal plate, which extends in the longitudinal direction of the relevant support body, or a number of cast-in supports Metal plates protruding above, which protrude upwards and are aligned with one another in the longitudinal direction of the relevant support body.
• FIG. 4 is a plan view of a section of a road crossing designed according to the invention, in which holding bodies are provided for securing the concrete slabs,
• FIG. 6 shows an embodiment of a support body of a road crossing designed according to the invention in section
• FIG. 7 shows a top view of an outer edge bearing of the outer plate of a road crossing according to the invention
• FIG. 8 shows a further embodiment of a support body of a road crossing according to the invention in section.
• the roadway in the region of track 1 is formed by plates 2, 3, which are made of plastic concrete.
• the track 1 consists of rails 4, 5, which are fastened with rail holding plates 6 and rail holding screws 7 on sleepers 8, which in turn rest on a ballast bed 9.
• the space between the rails 4, 5 is filled by the inner plates 2, which each lead this space, cantilevered, from one rail 4 to the other rail 5 of the track; the inner plates are elastically supported on the inner rail feet 4a, 5a; for this purpose, lugs 2a, 2b are formed on the longitudinal edges of the inner plates, which engage in groove-like rubber profiles 10, which in turn rest on the rail feet 4a, 5a and on the rail webs 4b, 5b.
• the on the rails 4, 5 The outer plates 3 of the track, which are subsequently arranged on the outside, have lugs 3a which, for the elastic support of the edge of the outer plates 3 facing the rails, engage in rubber profiles 11 which rest on the outside on the rail foot 4a or 5a and on the rail web 4b or 5b. On their side opposite the rail-side edge, the outer plates 3 are supported on support bodies 12.
• the plastic concrete slabs 2, 3 have a top layer 15 on their upper side, into which a granular material is introduced, the individual grains being spaced apart from one another.
• FIGS. 3a, 3b and 3c show on an enlarged scale in section the areas of troughs 18, which are provided in plastic concrete slabs 2, 3 and in which project from the trough wall surface 17, pins 20 or brackets 21, which form attack points for hoists or the like.
• the length 23 of the inner plates 2 corresponds approximately to twice the center distance 24 of two adjacent sleepers 8 of the track 1.
• holding bodies 26 are provided in the embodiment shown in FIGS. 4 and 5, which engage in recesses 27 which engage on the longitudinal edges of the concrete slabs 2 supported on the rail feet, 3 or on the lugs 2a, 2b provided there and form a free space for the rail fastening parts.
• the holding bodies 26 in turn have openings 28, into which the rail retaining screws 7 of the track 1 engage. The result is simple and good fastening if the holding body 26 is screwed down with the rail holding screws 7.
• the holding bodies are designed as U-shaped brackets which are fastened to the base 30 with the rail holding screws and come into contact with their legs 31 on the side surfaces 32 of the cutouts 27.
• a groove 35 is provided on the upper side 34 thereof, into which an elastic strip 14 is inserted.
• the elastic strip 14 has two layers 14a, 14b, which differ from one another in their flexibility. The less resilient layer 14a is inserted into the groove 35 and anchors the bar 14 in this groove, while the more resilient layer 14b forms a line-like support for the overlying outer plate 3 of the road crossing.
• a rib 36 is formed on the top of the support body.
• FIG. 8 Another embodiment of such a support body, which is shown in section in Fig. 8, has a metal plate 37 to secure the outer plates 3 against migration to the outside, which protrudes from the top 34 of the bearing body 12 upwards and in the longitudinal direction thereof Support body extends.
• this metal plate 37 is bent at an angle at its cast end.
• a number of shorter metal plates can also be provided, which are aligned with one another in the longitudinal direction of the support body 12.
• the outer plates 3 made of plastic concrete are mounted on support bodies 12, the length of which corresponds to the length of an outer plate, and the support bodies 12 are provided with elastic strips 14, which form a line-like support for the outer plates 3.
• the elastic strips 14 are inserted in grooves 35, which are provided on the upper side 34 of the support body 12.
• the elastic strips 14 have a length of approximately two thirds of the length of the support body 12.
• the support body 12 are offset relative to the outer plates 3 in the longitudinal direction of the track in such a way that the strips 14 run continuously under the joints 38 between adjacent outer plates 3 and thereby Outer plates 3 are supported by the elastic strips 14, starting from the parting lines 3 ⁇ , to a length 39 which corresponds approximately to one third of the longitudinal extent of the outer plates 3, so that each outer plate 3 as a whole is approximately two thirds of its length on the elastic strips 14 lies on.

Landscapes

• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Road Paving Structures (AREA)
• Noodles (AREA)
• Ropes Or Cables (AREA)
• Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
• Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
• Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
• Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
• Electrotherapy Devices (AREA)
• Control Of Eletrric Generators (AREA)
• Amplifiers (AREA)
• Bipolar Transistors (AREA)
• Control Of Vehicles With Linear Motors And Vehicles That Are Magnetically Levitated (AREA)
• Inorganic Insulating Materials (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

Family

ID=3508515

Family Applications (1)

Country Status (8)

Cited By (4)

Families Citing this family (3)

Citations (8)

Family Cites Families (9)

• 1985
  • 1985-04-19 AT AT0118885A patent/AT390085B/de not_active IP Right Cessation
• 1986
  • 1986-04-08 AU AU56975/86A patent/AU593798B2/en not_active Expired
  • 1986-04-08 EP EP86902267A patent/EP0218643B1/de not_active Expired - Lifetime
  • 1986-04-08 WO PCT/AT1986/000027 patent/WO1986006428A1/de active IP Right Grant
  • 1986-04-08 AT AT86902267T patent/ATE49429T1/de not_active IP Right Cessation
  • 1986-04-08 DE DE8686902267T patent/DE3668198D1/de not_active Expired - Lifetime
  • 1986-12-16 DK DK605486A patent/DK160516C/da not_active IP Right Cessation
  • 1986-12-18 NO NO865164A patent/NO865164L/no unknown
  • 1986-12-18 FI FI865197A patent/FI87379C/fi not_active IP Right Cessation

Patent Citations (8)

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