Bridge and method for building a bridge

Abstract

A bridge designed as a multi-span bridge. The bridge includes a bridge superstructure having superstructure sections each of which traverse one span of the multi-span bridge. Each of the bridge superstructure sections has longitudinal beams arranged adjacent to one another transversely with respect to their longitudinal direction, and traverse beams which connect the longitudinal beams to one another. Each of the longitudinal beams has a main beam section and anchor blocks arranged laterally thereon. The transverse beams are created using in-situ concrete. The transverse beams include a central transverse beam. Two bridge superstructure sections arranged one behind the other in a longitudinal direction are connected by the central transverse beam arranged therebetween. A prestressing tendon braces two of the bridge superstructure sections arranged directly one behind the other in the longitudinal direction against one another. The prestressing tendon is fixed to at least one of the anchor blocks.

What is claimed is: 
     
         1 - 14 . (canceled) 
     
     
         15 . A bridge which is designed as a multi-span bridge having two or more spans, the bridge comprising a bridge superstructure comprising:
 two or more bridge superstructure sections each of which traverse one span of the multi-span bridge, each of the two or more bridge superstructure sections comprising,
 a plurality of longitudinal beams which are arranged adjacent to one another transversely with respect to their longitudinal direction, each of the plurality of longitudinal beams comprising a main beam section and anchor blocks which are arranged laterally on the main beam section, and 
 transverse beams which are configured to connect the plurality of longitudinal beams to one another, the transverse beams being created using in-situ concrete, the transverse beams comprising a central transverse beam, 
 wherein, 
 two bridge superstructure sections which are arranged one behind the other in a longitudinal direction are connected by the central transverse beam which is arranged therebetween; and 
   at least one prestressing tendon which is configured to brace two of the bridge superstructure sections which are arranged directly one behind the other in the longitudinal direction against one another, the at least one prestressing tendon being fixed to at least one of the anchor blocks.   
     
     
         16 . The bridge as recited in  claim 15 , wherein,
 the plurality of longitudinal beams includes a first longitudinal beam and a second longitudinal beam which is arranged adjacent to the first longitudinal beam in the longitudinal direction, and   the at least one prestressing tendon is arranged to extend from the anchor block of the first longitudinal beam through the main beam section of the second longitudinal beam.   
     
     
         17 . The bridge as recited in  claim 16 , wherein the at least one prestressing tendon is fixed to the anchor block via at least one of a prestressing anchor and a dead-end anchor. 
     
     
         18 . The bridge as recited in  claim 16 , wherein,
 the bridge is designed as a multi-span bridge having three or more spans,   the bridge comprises three or more bridge superstructure sections each of which traverse one span of the multi-span bridge,   the plurality of longitudinal beams further includes a third longitudinal beam which is arranged adjacent to the second longitudinal beam in the longitudinal direction, and   the at least one prestressing tendon extends to the anchor block of the third longitudinal beam.   
     
     
         19 . The bridge as recited in  claim 15 , wherein, as seen in a view of the bridge superstructure from above, the at least one prestressing tendon is spaced from an imaginary centerline which extends in the longitudinal direction through the plurality of longitudinal beams to a greater extent in a region of the anchor blocks, in which the prestressing tendon begins and ends, than in a region centrally between the anchor blocks. 
     
     
         20 . The bridge as recited in  claim 15 , wherein, as seen in a view from a side at a right angle to the longitudinal direction, the at least one prestressing tendon is arranged so as to extend closer to a top side of the bridge superstructure in a region of the central transverse beam than in a region centrally between two transverse beams. 
     
     
         21 . The bridge as recited in  claim 20 , wherein the bridge superstructure further comprises a carriageway slab which is created using in-situ concrete. 
     
     
         22 . The bridge as recited in  claim 21 , wherein, in the region of the central transverse beam, the at least one prestressing tendon is further arranged to extend through the carriageway slab. 
     
     
         23 . The bridge as recited in  claim 21 , wherein,
 each of the plurality of longitudinal beams further comprises a deck surface section, and   the plurality of longitudinal beams are arranged so that the deck surface sections form, transversely with respect to the longitudinal direction of the plurality of longitudinal beams, a continuous deck surface on which the carriageway slab is arranged.   
     
     
         24 . A method for erecting a bridge which is designed as a multi-span bridge having at least two spans, the bridge comprising a bridge superstructure comprising two or more bridge superstructure sections each of which each traverse one span of the multi-span bridge, the method comprising:
 providing longitudinal beams each of which comprise a main beam section, anchor blocks which are arranged laterally on the main beam section, and cladding tubes for prestressing tendons;   providing transverse beams which are configured to connect the plurality of longitudinal beams to one another, the transverse beams being created using in-situ concrete;   positioning the longitudinal beams adjacent with respect to one another transversely with respect to their longitudinal direction;   connecting mutually adjacent longitudinal beams to one another in respective end regions via the transverse beams;   supplementing the cladding tubes for the prestressing tendons to traverse one or more bridge piers;   connecting two bridge superstructure sections which are arranged directly one behind the other in the longitudinal direction on the bridge substructure via a central transverse beam which is created via in-situ concrete, wherein the cladding tubes are arranged to emerge upwardly from the longitudinal beam adjacent to a region in which the central transverse beam is created using the in-situ concrete;   guiding the prestressing tendons through the cladding tubes after the central transverse beam has been created using the in-situ concrete;   bracing at least the bridge superstructure sections which are arranged directly one behind the other in the longitudinal direction against one another via the prestressing tendons; and   fixing at least one of the prestressing tendons to one of the anchor blocks.   
     
     
         25 . The method as recited in  claim 24 , further comprising:
 at least partially pre-fabricating the two or more bridge superstructure sections at a location which is remote from the bridge;   transporting the two or more bridge superstructure sections which have been at least partially prefabricated from the location which is remote from the bridge to a location of the bridge; and   moving the respective superstructure sections of the two or more bridge superstructure sections to traverse the associated spans of the multi-span bridge into place on a relevant part of the bridge substructure of the multi-span bridge.   
     
     
         26 . The method as recited in  claim 24 , wherein,
 at least some of the cladding tubes are designed to be continuous in the longitudinal direction, and   the prestressing tendons are guided through the cladding tubes which are designed to be continuous in the longitudinal direction so as to provide a continuous prestress.   
     
     
         27 . The method as recited in  claim 24 , wherein at least some of the cladding tubes are designed so that the prestressing tendons which are guided therethrough only extend over one or two of the bridge piers. 
     
     
         28 . The method as recited in  claim 24 , wherein,
 the longitudinal beams includes a first longitudinal beam and a second longitudinal beam that is adjacent to the first longitudinal beam in the longitudinal direction,   at least one of the prestressing tendons is guided so as to extend from the anchor block of the first longitudinal beam through the main beam section of the second longitudinal beam, and   the longitudinal beams situated one behind the other in the longitudinal direction are braced against one another via the at least one of the prestressing tendons.