Method for the production of a deck slab for a bridge

Abstract

“A method for producing a construction section of a deck slab for a bridge includes the following operations: producing a bottom layer composed of a segment and having cross beams, which are arranged in the transverse direction in regard to the longitudinal axis of the longitudinal bridge girder, from reinforced concrete; transporting the bottom layer having the cross beams for a construction section of the deck slab using a conveyor device from an assembly site to an installation site and lowering it into the installation position; producing a top concrete layer for a construction section of the deck slab on the bottom layer; removing the bottom layer having the cross beams for a construction section of the deck slab from the conveyor device and moving the conveyor device away from the installation site.”

1 - 14 . (canceled) 
     
     
         15 . A method for the production of a construction section of a deck slab for a bridge, wherein:
 a—there is produced at an assembly site, from reinforced concrete, a bottom layer composed of one or more segments and having cross beams, which are arranged at an angle of between 70° and 90° to a longitudinal axis of a longitudinal bridge girder;   b—the bottom layer having the cross beams is transported for the construction section of the deck slab, using one or more conveyor device, from the assembly site to an installation site and lowered into an installation position;   c—there is laid onto the bottom layer having the cross beams a top concrete layer for the construction section of the deck slab, wherein there is laid a reinforcement to be arranged within the top concrete layer before the application of the top concrete layer;   d—the bottom layer having the cross beams is removed for the construction section of the deck slab, from the conveyor device, before or after the application of the top concrete layer; and   e—the conveyor device is moved away from the installation site and conveyed to the assembly site in order to pick up there a further bottom layer having cross beams for a construction section of the deck slab.   
     
     
         16 . A method according to  claim 15 , wherein the bottom layer having the cross beams is removed for the construction section of the deck slab after being lowered from the conveyor device, the conveyor device is moved away from the installation site and only then the top concrete layer is being applied thereupon. 
     
     
         17 . A method according to  claim 15 , wherein the cross beams are produced in advance as prefabricated beams, are laid on the assembly site and only then the bottom layer is being produced. 
     
     
         18 . A method according to  claim 15 , wherein the bottom layer is produced from prefabricated slabs and the cross beams are connected to the prefabricated slabs by way of welding, screwing, or starter bars. 
     
     
         19 . A method according to  claim 15 , wherein there are arranged within the cross beams anchors for lifting the bottom layer and the cross beams and/or there is arranged in one of the cross beams a tendon in the longitudinal direction of that cross beam. 
     
     
         20 . A method according to  claim 15 , wherein there are connected to one another two cross beams, which are arranged in different segments, by way of a structural steel connection. 
     
     
         21 . A method according to  claim 15 , wherein the top concrete layer is applied in two operations and a second part of the top concrete layer is produced only after a first part of the top concrete layer has reached a predetermined minimum rigidity. 
     
     
         22 . A method according to  claim 15 , wherein the bottom layer and/or the cross beams are produced having one or more haunches. 
     
     
         23 . A method according to  claim 15 , wherein the bottom layer and/or the cross beams are produced having a variable thickness. 
     
     
         24 . A method according to  claim 15 , wherein a segment of the bottom layer having cross beams is shifted transversally to the longitudinal axis of the longitudinal bridge girder and/or rotated in regard thereto after being raised at the assembly site, is transported from the assembly site to the installation site in this shifted and/or rotated position and is then installed at the installation site by cross shift and/or a rotation into the scheduled installation position. 
     
     
         25 . A method according to  claims 15 , wherein there is connected at the assembly site a bottom layer composed of two or more segments and having cross beams via a first top concrete layer or an alternative technique of connection to a bottom layer comprising one segment and having cross beams. 
     
     
         26 . A method according to  claim 15 , wherein:
 the bottom layer having the cross beams is produced as a segment;   the conveyor device is made of a front part, a rear part and two or more longitudinal girders;   the front part and the rear part of the conveyor device are connected to one another by the two or more longitudinal girders;   the front part and the rear part of the conveyor device are moved on support constructions;   the bottom layer having the cross beams is arranged between the front part and the rear part and underneath the longitudinal girders of the conveyor device; and   there will not be arranged any construction elements for connecting the front part and the rear part of the conveyor device underneath the bottom layer having the cross beam during the lowering operation at the installation site.   
     
     
         27 . A method according to  claim 15 , wherein:
 the conveyor device is made of a front part and a rear part and two or more longitudinal girders;   wherein for shifting the conveyor device in order to produce a next construction section of a deck slab, the front part and the rear part of the conveyor device are moved on support constructions in the longitudinal direction of the bridge;   wherein the front part and the rear part of the conveyor device are connected to one another by the two longitudinal girders; and   there is created at the longitudinal girders a construction for lifting and/or lowering the bottom layer having the cross beams, which is arranged between the front part and the rear part and underneath the longitudinal girders of the conveyor device.   
     
     
         28 . (canceled) 
     
     
         29 . A method according to  claim 15 , wherein the bottom layer is produced from prefabricated elements, wherein the prefabricated elements comprise two or more prefabricated slabs and one cross beam connecting the at least two prefabricated slabs with each other, wherein the prefabricated elements are laid on mounting girders at the assembly site and the prefabricated elements are connected to a segment.