Classifications

• • 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
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
  • B60L13/00—Electric propulsion for monorail vehicles, suspension vehicles or rack railways; Magnetic suspension or levitation for vehicles
• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
  • E01B25/00—Tracks for special kinds of railways
  • E01B25/30—Tracks for magnetic suspension or levitation vehicles
  • E01B25/305—Rails or supporting constructions
• • 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
  • E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
  • B60L2200/00—Type of vehicles
  • B60L2200/26—Rail vehicles
• • 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
  • E01D2101/28—Concrete reinforced prestressed

Definitions

• the present invention relates to a multi-span beam made of concrete, in particular reinforced concrete or prestressed concrete, according to the preamble of the independent claims.
• Carriers which span two or more fields.
• a disadvantage of these previously known multi-span girders is that when the girders are subjected to high loads, in particular with a large span, the girders bend. This deflection, which is problem-free with conventional girders, such as those used for motorway bridges or railway bridges, can cause malfunctions in modern track-bound vehicles in high-speed traffic, in particular in magnetic levitation trains.
• the magnetic levitation trains must be guided on functional components which are arranged on the carrier and which must meet extremely precise positioning requirements. sen. Reinforced concrete girders for high-speed carriageways with steel attachments arranged thereon for guiding the magnetic levitation railways have so far not been realized as multi-span girders for the reasons of the inventor's knowledge.
• the present invention therefore has as its object to avoid the existing disadvantages and, in particular, to create a multi-span girder which fulfills the high requirements for high-speed railways, in particular magnetic levitation trains, and yet permits extremely large spans for economical construction of the carriageway.
• the multi-span girder according to the invention is made of concrete, in particular reinforced concrete or prestressed concrete, and is provided with supports.
• the supports are located at each end of a field of the beam.
• the girder is made from at least one prefabricated concrete part, for example a reinforced concrete or prestressed concrete part, a particularly precise and stable manufacture of the multi-field girder is made possible.
• the precast concrete can be produced in a production hall that has optimal climatic conditions. Post-processing of the finished part is also possible, so that the multi-field girder can be delivered to the construction site as a precisely manufactured component.
• a multi-field carrier according to the invention which largely retains its shape even under great loads.
• the true-to-shape pre-tensioning of the multi-span girder prevents the girder from undergoing shape changes in its cross section due to shrinking or creeping.
• the appropriately pre-stressed beam experiences through only changes in length and no shortening in cross-section.
• the multi-field girder can be used particularly advantageously if a precise position of the girder is also required on the girder during its use or of attachments.
• the prestressing element is advantageously a tendon.
• the prestressing elements can be concreted, tensioned tension wires (prestressing bed tension), connected after the concreting of the beam to the beam, not connected to the beam (tension without bond) or arranged externally on the beam.
• a multi-span girder according to the invention made of concrete, in particular reinforced concrete, is particularly suitable for arranging a route of a track-bound vehicle in high-speed traffic, in particular a magnetic levitation train. Due to their construction over multiple fields, multi-span girders make it largely problem-free to change the length of the joints or joints created between the individual girders for the traffic of the high-speed vehicle. Due to the small number of joints that are subject to a change in length, this makes a multi-span girder particularly suitable for driving highly sensitive vehicles.
• the multi-field carrier according to the invention is therefore used in particular for use in magnetic levitation vehicles that can be guided with extreme accuracy.
• At least one field, preferably a plurality of fields of the multi-field girder are made from a prefabricated concrete part. If the multi-span girder consists of several precast concrete parts coupled to one another, the coupling takes place in such a way that the girder acts like a single girder with regard to its expansion. This means that expansion joints to the adjacent multi-span beams are not between the individual fields of a single multi-field carrier are present.
• the multi-span girder is made from several individual prefabricated concrete cables, each of which bridges a field.
• the multi-field girder is made from its single prefabricated concrete part, since the accuracy of the dimensions of the multi-field girder can be kept particularly high.
• the prestressing elements arranged in the support have curved profiles in the vertical direction, a true-to-shape prestressing of the multi-field support can be obtained.
• the curve-shaped courses are in places similar to a parabola or wave-shaped, the high points of the curve in the area of the supports and their low points being provided essentially in the middle of each field.
• the course of at least some of the prestressing elements essentially corresponds to the moment course of the carrier, the dimensionally correct prestressing of the carrier can be obtained particularly advantageously.
• the force can be adjusted after installation of the support or the pretensioning elements in the support so that it is individually true to shape for the support Preload causes. This can also be corrected if the relevant parameters for the true-to-shape pre-tension change during use of the beam.
• the prestressing element is firmly connected to the prefabricated concrete part by being cast in during the manufacture of the prefabricated concrete part. In this way, an exact course of the prestressing element in the precast concrete part can be obtained.
• the anchoring of the prestressing element in the precast concrete part is particularly easy to achieve as a result. hold.
• the prestressing element is arranged to be longitudinally movable within the precast concrete part in order to be able to apply a corresponding clamping force to the precast concrete part.
• the prestressing element is interchangeably connected to the prefabricated concrete part, it can be installed in particular after the production of the prefabricated concrete part or can be replaced if the prestressing element is damaged. This interchangeability ensures long use of the precast concrete element, as it is particularly easy to maintain.
• the carrier has at least one web, a cross-section of the carrier that is particularly favorable with regard to its deflection is selected. Due to the web, the carrier has a substantially T-shaped cross-section, which makes it particularly suitable with regard to the deflection and the shape-correct pre-tensioning of the carrier, in order to serve as the basis for the travel path of a high-speed means of transport.
• the carrier can either be designed with a full cross section or with a hollow box cross section.
• a box girder in particular has a very high stability and particularly favorable shape-accurate changes in length.
• the pretensioning elements are arranged in the web or webs, this results in a combination between the cross-sectional shape of the carrier and the pretensioning of the carrier, which is currently regarded as optimal, while maintaining its cross-sectional shape in the event of changes in length.
• the course of the prestressing elements is curved in the vertical direction, in places similar to a parabola or a sine curve, or wavy.
• the high points of the curve lie in the area of the supports and the low points of the curve essentially in the middle of each field of the beam. This can advantageously pre-curve each Field of the carrier can be achieved.
• the curve essentially begins at a high point, reaches at least one low point within the field and has a further high point in the area of the Aufiagers. Then there will be at least one low point for the second field and finally a last high point towards the repository.
• This curve of the pretensioning element results in a curvature with a corresponding tensioning of these pretensioning elements, which curvature is directed against the usual sag of the carrier.
• the prestressing element tries to take a straight line and thereby causes the reinforced concrete beam to curve against the line of the prestressing element guide.
• an actual dimension of the beam is obtained which is optimal for the driving operation of the vehicle.
• the two webs of the carrier are connected as abutments at the ends of the carrier, preferably in the region of each support of the carrier, with a plate arranged transversely to the longitudinal direction of the carrier.
• This plate which serves as an abutment, ensures that the support is stable with regard to its torsion and, moreover, as sufficient fastening for the pretensioning elements and for attaching hydraulic presses for tensioning the pretensioning elements.
• the prestressing element is arranged in a cladding tube.
• the cladding tube is preferably concreted into the web as an empty tube.
• the prestressing element is passed through the empty tube and attached to the bearing points.
• the cladding tube is concreted in a line in the webs as to how the prestressing element should subsequently run.
• ventilation is provided for the cladding tube at the high point.
• a fixed bearing and two floating bearings are provided for mounting the carrier.
• three floating bearings can also be provided for fastening the carrier on the supports, since the extremely high weight of the long multi-field girders means that there is no fear of an inadmissible displacement of the carriers.
• the carrier can be divided into segments in a particularly advantageous and inventive manner.
• the segments then preferably have an integral fraction of the total length of the carrier.
• the individual segments are finally connected to each other to form the multi-field girder.
• the connection is made in such a way that forces and vibrations occur in the carrier as in a continuous multi-field carrier.
• a segment construction in which one segment is provided per field of the multi-field carrier has proven to be particularly advantageous. For example, a two-field carrier then consists of two segments, each of which has the length of one field.
• each prestressing element has its own cladding tube.
• the pretensioning element begins at the free end of the multi-field carrier and extends into the next field. It therefore ranges from one high point to the next high point.
• the biasing element of the following segment begins in the previous segment and runs through the second segment, for example. If this second segment is already the last segment, ie if it is a two-field girder, this prestressing element ends at the end of the second segment. In the case of a multi-field girder with more than two fields, the prestressing element of the second segment extends into the third segment. An overlap of the prestressing elements is also generated here.
• a prestressing element overlap thus takes place in the area of the central supports or inner supports.
• the multi-field girder even though it is composed of several individual segments, still acts like a multi-field girder made of one piece with regard to its sound, vibration and expansion behavior. It is thus obtained in a particularly advantageous manner, a multi-field girder with all the advantages of the multi-field girder, without its disadvantages, namely the transport from the place of manufacture to the place of use, as well as the exact positioning at the place of use, since the individual segments are handled much more easily with conventional means of production and transportation can be.
• each segment end that corresponds to another segment must be sponsored, a fugue provided.
• This joint has special facilities and designs to maintain a good connection with the neighboring segment.
• the joint is concreted.
• a particularly high-quality concrete is used, which is particularly well suited for pouring the joint without creating voids.
• the joint is at least partially filled with foam. This advantageously has the effect that the surface pressure on the areas of the joint which are not filled with foam is correspondingly high and thus permits good tensioning of the joint. It is hereby reliably achieved that the penetration of water, which could destroy the joint concrete, is prevented.
• a separating layer is arranged on one side of the joint filling material. The separating layer has the effect that when the two segments are taken apart for transport to the place of use, the shape of the joint exists and the two segments can fit together on site without any problems. The separating layer separates the joint filling material from one side of the segment.
• the joint then has the corresponding shape at the end of the segment, which means that the segments can be easily assembled at the construction site.
• the joint filling material While one side of the joint filling material is provided with the separating layer, it is important on the other side of the joint filling material that it has good contact with the other segment. To ensure good contact between the segment and the joint filling material, the segment is roughened on the face of the joint. This will create a very good connection between the joint filling material and the segment of the carrier.
• a positive connection between the joint filling material and the end faces of the segments is provided.
• a type of toothing has proven to be advantageous.
• the joint filling material on one end face of the segment can also be provided with this toothing in addition to the roughening in order to create a good and permanent connection between the joint filling material and the segment. If the separating layer is attached to the other side of the joint filling material, the interlocking results in an exact positioning between the two segments when the two segments are assembled at the construction site. As a result, the connection of the two segments, which has already been measured and in the correct position in the production facility, is restored by the toothing which interlocks between the joint filling material and the segment.
• a toothing is provided on the end face of the carrier segment.
• the positioning of the individual segments in the x, y and z axes is clearly defined.
• one or more guide bolts can possibly also be concreted in at one end of a segment in addition to a toothing of the joint.
• the guide pin protrudes slightly beyond the end of the segment and into the joint.
• a corresponding shape is created to the end of the guide bolt.
• the guide pin is used for an exact positioning of the segments according to the best before the joint was filled. position.
• a sleeve is advantageously concreted in the joint, which corresponds to the guide pin. For this purpose, the sleeve is pushed onto the guide pin while the joint is being filled.
• the sleeve When the individual segments are disassembled and joined, the sleeve will remain in the joint filling material while the guide pin moves out of the sleeve. Exact positioning of the segments is achieved by re-inserting guide bolts into the sleeve. It when the sleeve or the corresponding end of the guide pin have a conical shape is particularly advantageous. This makes it easier to insert the guide pin into the sleeve when the individual segments are joined together.
• screws and dowels can be used to join the individual segments. While the dowels are arranged in one segment, the other segment has a through hole, for example in the plate of the carrier, in order to receive the screw. By connecting the screw to the dowel, the two segments or the joint filling material are clamped.
• a prestressing element can also be used, which, for example, extends through the two plates of the supports of the segments. Which in turn causes a clamping of the segments is achieved by this biasing member are screwed with nuts' to the projecting ends of the biasing members.
• the carrier is designed as a box girder, it is particularly advantageous if the box girder is used as a cable route or for mounting carrier elements for cables. Such lines can be provided, for example, for power supply or data transmission.
• the box girder has entry openings. This allows maintenance or inspection personnel to enter the box girder and carry out the necessary examinations or work in it.
• FIG. 1 shows a one-piece two-field girder
• FIG. 2 shows a two-field carrier made up of two segments
• FIG. 3 shows a section III-III from FIG. 2
• FIG. 4 shows a section IV-IV from FIG. 2,
• FIG. 5 shows a connection point between two segments
• FIG. 6 the end face of a segment
• Figure 7 is a fugue.
• the following exemplary embodiments describe multi-field girders which are used, for example, for arranging add-on parts for magnetic levitation trains.
• the girders are shown as hollow box girders, but can also be designed as girders with one or more webs with a full cross section.
• Tendons 5 are shown as prestressing elements.
• a multi-field carrier 1 is shown. It is a girder that spans two fields, i.e. a two-field girder.
• the carrier 1 has three supports 2.1, 2.2, 2.3, which support the carrier on supports, not shown.
• the beam 1 is a reinforced concrete part which has two cavities 3. With appropriate strength, the separation of the two cavities 3 in the area of the support 2.2 can also be omitted.
• Each cavity 3 has an entry hole 4 for inspection of the cavity 3.
• the entry hole 4 is large enough to allow a maintenance person to get into the cavity 3 and to carry out inspections with regard to the structural condition of the carrier 1.
• a tendon 5 is arranged in a wave shape, in the manner of a sine curve, in places in the form of a parabola.
• the tendon 5 has a high point of its lines in the area of the supports 2.1, 2.2 and 2.3.
• the low points of the curve lie approximately in the middle of each field.
• the tendon 5 is attached to the ends of the carrier 1.
• the tensioning of the tensioning element 5 causes the support 1 to be pre-tensioned, so that the support 1 bends against the curve of the tensioning element 5. This means that the support 1 bends between the supports 2.1 and 2.2 and between the supports 2.2 and 2.3 depending on the need or tension of the tendon upwards.
• the tendon 5 is fixed in the plate 8.
• the tendon 5 is tensioned and is anchored in the plate 8, which serves as an abutment for the tendon 5. In this way, a permanent prestress of the tendon 5 is obtained.
• a vent opening 9 is provided in the area of the high point at the support 2.2.
• FIG. 2 also shows a side view of a two-field carrier 1, which, in contrast to the exemplary embodiment in FIG. 1, is composed of two segments 10.1 and 10.2.
• the segment 10.1 is supported with supports 2.1 and 2.2 on supports, not shown.
• the support 2.2 is divided into two, with a part of the support 2.2 facing the carrier 10.1. arranges and the other part is assigned to the carrier segment 10.2.
• the carrier segments 10.1 and 10.2 and the support 2.2 are connected to one another by means of a joint 12.
• the joint 12 will be explained in more detail later.
• Each of the carrier segments 10.1 and 10.2 has a cavity 3, which is closed with a plate 8 or 8.1 or 8.2.
• each carrier segment can have an entry hole 4 (not shown) in order to be able to carry out maintenance and assembly work within the cavity 3.
• the tendon is also divided into two segments, namely tendons 5.1 and 5.2.
• the tendons 5.1 and 5.2 overlap in the area of the center support 2.2 or within the plates 8.1 and 8.2.
• Each of the tendons 5.1 and 5.2 has its high point in the plate 8 or 8.1 and 8.2.
• the low point is approximately in the middle of the carrier segment 10.1 or 10.2.
• Each tendon 5.1 and 5.2 is fixed in the area of the plates 8 or 8.1 or 8.2 and tensioned by means of hydraulic presses, not shown. This results in a pre-tensioning of the segments 10.1 and 10.2.
• the overlap of the tendons 5.1 and 5.2 in the area of the support 2.2 results in a very firm connection between the support segments 10.1 and 10.2.
• the vibration, strain and sound behavior will be similar to a one-piece multi-field beam 1.
• the tendon 5.2 is anchored from the cavity 3 of the support segment 10.2.
• the tendon 5.1 is in turn anchored from the cavity 3 of the carrier segment 10.1.
• a very firm connection is thus created between the carrier segments 10.1 and 10.2.
• the joint 12 is also effected by means of a plurality of tendons 13 which are arranged in the supports 2.2 and in regions (not shown) of the plates 8.1 and 8.2.
• the tendons 13 press the segments 10.1 and 10.2 together against the joint 12 and thus produce a firmly connected multi-field beam 1.
• FIG. 3 shows a section III-III from FIG. 2.
• the carrier segment 10.1 is accordingly a hollow profile with upper and lower belts 6 and lateral webs 7.
• the cross section has an essentially trapezoidal shape.
• the upper belt 6 has arms which protrude from the profile and which are used for fastening brackets 33 and / or attachments for guiding a magnetic levitation train.
• a line 25 is arranged within the cavity 3. Supply lines for power or data transmission or other lines are laid in line 25.
• the line route 25 can of course also be laid in other areas of the cavity 3, which in particular facilitate the maintenance work in the cavity 3.
• a cladding tube 14 is concreted in.
• the tendons 5.2 and 5.4 run within the tube 14.
• the tendons 5.2 or 5.4 are inserted into the cladding tube 14 after the manufacture of the carrier segment 10.1 and, after assembly with the further segment or, in the case of a one-piece multi-field carrier, subsequently brought to the required prestressing after the manufacture.
• the cladding tube 14 is concreted into the carrier 10.1 in a position which corresponds to the course of the tendon 5 in order to obtain a prestressing of the carrier 10.1 z.
• FIG. 4 shows a section IV-IV from FIG. 2. It shows a section through the carrier segment 10.1 immediately before the support 2.2.
• the cladding tubes 14 and the tendons 5.2 and 5.4 are almost at the high point of their curve.
• the beginning of the overlap of tendons 5.1 and 5.2 or 5.3 and 5.4 can also be seen. While the tendons 5.2 and 5.4 still run in the area of the web 7, the tendons 5.1 and 5.3 are laterally distorted. This lateral distortion of the tendons 5.1 and 5.3 enables the overlap with the tendons 5.2 and 5.4.
• the attachment of fasteners and hydraulic presses for tensioning tendons 5.1 and 5.3 are provided.
• the abutments of the tendons 5.1 and 5.3 are located in the area of the plate 8.1 and are therefore reliably supported on the support segment 10.1.
• Tendons 13 are arranged within the plate 8.1 and in the supports 2.2.
• the tendons 13 are threaded rods which firmly connect the halves of the support 2.2 and the plate 8.1 and the plate 8.2, not shown, and thus press the segments 10.1 and 10.2 against the joint, not shown.
• the tendons 13 are only hinted at here. Of course, they can be arranged at other or further locations in the area of the cross section.
• Figure 5 shows a sketched longitudinal section in plan view of the center support 2.2.
• the carrier segments 10.1 and 10.2 are firmly connected to one another in the area of this center support 2.2.
• the connection is made by means of the tendons 13, which extend through the support halves 2.2 through a joint 12 and through the plates 8.1 and 8.2 into the cavity 3.
• the tendons 13 are preferably threaded rods with nuts, which tension the support segments 10.1 and 10.2 against the joint 12 by means of a bracing.
• the tendons 5.1 to 5.4 run in the webs 7 or in the plates 8.1 and 8.2.
• the ends of the tendons 5.1 to 5.4 are warped horizontally in the direction of the cavity 3. In this way, an overlap of the tendons 5.1 to 5.4 is achieved and, moreover, the tensioning of the respective tendons is made possible because the ends of the tendons 5.1 to 5.4 end in the cavity 3.
• part of the joint of the support segments 10.1 and 10.2 is provided with an elastic insert 15.
• the elastic insert 15 has the effect that the area of the ends of the carrier segments 10.1 and 10.2, which is effective for pressing the carrier segments 10.1 and 10.2 together, is reduced.
• a high surface pressure is obtained by the tendons 13 and the tendons 5.1 to 5.4 in the region of the joint 12, which for a ensures permanent and trouble-free connection of the support segments 10 1 and 10 2 and also maintains the positive properties of the one-piece construction of a multi-field support despite the segment construction
• FIG. 6 shows the view of an end face of the support segment 10 1.
• a part of the end face is provided with the elastic insert 15 to reduce the area of the end face which is effective for the contact pressure.
• a plurality of tendons 13 are provided for connecting the support segment 10 1 to the support segment 10 2 (not shown)
• hollow tubes 14 are concreted in, in which the tendons 5 run over the whole.
• a large number of toothings 18 are provided across the cross-sectional area of the end face. The toothings 18 engage in the joint 12 (not shown) and thus bring about a displacement-safe and positionally accurate positioning of the support segments 10 1 and 10 2 relative to one another.
• the toothings 18 are oriented in different directions in order to provide forces in all transverse directions of the wearer
• the support 2 2 sits on two bearings 19 which are fastened on a support 30.
• the bearings 19 are produced in such a way that concrete is injected into the formwork (not shown) by means of injection hoses 20 which are located in the support 2 2 Fills the formwork After the concrete has hardened, the formwork is removed, which creates the bearing 19.
• the support segment 10 1 is temporarily stored on the support 30 on hydraulic presses.
• the bearing 19 can also be largely preformed and an appropriate compensating layer can only be introduced for the precise alignment of the support segment 10 1.
• Other manufacturing methods as are customary in bridge construction can also be used
• FIG. 7 shows a detailed view of a joint 12 in section.
• the support segments 10 1 and 10 2 abut the joint 12.
• an end face of a carrier segment 10.1 or 10.2 is roughened.
• the joint 12 which consists of a particularly high-quality concrete, is firmly connected to the end face of the corresponding support segment 10.1 and 10.2.
• the opposite end face of the support segment 0.2 or 10.1 is provided with a release agent, as a result of which the concrete of the joint 12 does not bond to the end face of the corresponding support segment 10.2 or 10.1.
• the support segments 10.1 and 10.2 can thus be removed from one another again, the concrete of the joint 12 sticking to the end face which was previously roughened.
• the teeth 18, which are arranged in both end faces, on the one hand provide a firm connection between the concrete of the joint 12 and the end face of the support segment 0.1 or 10.2.
• a precise fit is also achieved when reassembling the carrier segments 10.1 and 10.2. This also results in a positive connection of the support segments 10.1 and 10.2, which can absorb certain forces that act laterally on the support segments 10.1 and 10.2.
• a guide pin 21 An additional positioning aid and reinforcement of the connection of the carrier segments 10.1 and 10.2 to one another is achieved by a guide pin 21.
• the guide pin 21 is concreted into the support segment 10.1 and projects with its conical end into the joint 12.
• a corresponding sleeve 22 is placed on the conical end of the guide bolt 21 and concreted in together with the joint 12.
• the sleeve 22 is removed from the conical end of the guide pin 21.
• the conical end of the guide pin 21 is again inserted into the sleeve 22, as a result of which the positioning of the support segments 10.1 and 10.2 with respect to one another, as it was during the pouring of the joint 12, is obtained again.
• screw connections with dowels can be used instead of or in addition to the guide bolts 21 and the sleeve 22 and the teeth 18.
• dowels screws or threaded rods are arranged in one support segment, while corresponding dowels are embedded in the other support segment. A corresponding contact pressure or positive fit can also be obtained in this way.
• the present invention is not restricted to the exemplary embodiments shown.
• several fields can be connected to one another with the segment construction shown.
• the guiding of the tendons can be arranged as required in order to obtain the appropriate prestress.
• the arrangement of the tendons 5, although currently considered to be particularly advantageous, is not necessarily to be carried out in the webs of the hollow beam profile.
• the pre-stressing of the components can take place both immediately after manufacture or during manufacture of the beams or only at the construction site after settling on the corresponding supports, one of the special features of the manufacture of the multi-piece construction can be seen in this that the bracing of the individual support segments takes place after their positioning on the supports.
• a two-field girder is made from two one-piece girder beams.
• the multi-field beam is thus produced without it can be disassembled and reassembled. In some cases this is sufficient.
• a prestressed bed prestress, a prestress with or without bond, an external prestress or combinations thereof can also be carried out according to the invention.

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Publications (1)

Family

ID=7917196

Family Applications (1)

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Cited By (3)

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Citations (10)

Family Cites Families (8)

• 1999
  • 1999-08-09 DE DE19936756A patent/DE19936756A1/de not_active Withdrawn
• 2000
  • 2000-08-04 EP EP00958382A patent/EP1204798A1/de not_active Withdrawn
  • 2000-08-04 EA EA200200236A patent/EA200200236A1/ru unknown
  • 2000-08-04 JP JP2001515379A patent/JP2003506599A/ja active Pending
  • 2000-08-04 CZ CZ2002419A patent/CZ2002419A3/cs unknown
  • 2000-08-04 TR TR2002/00335T patent/TR200200335T2/xx unknown
  • 2000-08-04 WO PCT/EP2000/007592 patent/WO2001011142A1/de not_active Application Discontinuation
  • 2000-08-04 AU AU69926/00A patent/AU6992600A/en not_active Abandoned
  • 2000-08-04 BR BR0013217-9A patent/BR0013217A/pt not_active Application Discontinuation
  • 2000-08-04 KR KR1020027001892A patent/KR20020046279A/ko not_active Application Discontinuation
  • 2000-08-04 PL PL00354616A patent/PL354616A1/xx unknown
  • 2000-08-04 CA CA002381638A patent/CA2381638A1/en not_active Abandoned
  • 2000-08-04 CN CN00801142A patent/CN1313919A/zh active Pending

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