Drivable building structure

Abstract

A drivable building structure is provided including a first partial construction and a second partial construction movable relative to the first. The first partial construction has a first substructure and a first roadway structure which forms a first drivable surface, and the second partial construction has a second substructure and a second roadway structure which forms a second drivable surface. An expansion joint is between the first substructure and the second. A bridging structure extends between the first roadway structure and the second. The bridging structure spans the expansion joint and has a support plate and an expansion body. The expansion body is supported by the support plate, is cast on site from casting compound, and forms a drivable surface. The expansion body casting compound is polymer-based. The expansion body has a multi-layer structure produced in successive casting operations, and at least two of the layers have different compositions.

What is claimed is: 
     
         1 . A drivable building structure ( 1 ) having a first partial building structure ( 2 . 1 ;  2 . 1 ′;  2 . 1 ″) and a second partial building structure ( 2 . 2 ;  2 . 2 ′;  2 . 2 ″) drivable relative thereto, wherein
 the first partial building structure ( 2 . 1 ;  2 . 1 ′;  2 . 1 ″) comprises a first substructure ( 3 . 1 ;  3 . 1 ′;  3 . 1 ″) and a first roadway construction ( 4 . 1 ) forming a first drivable surface ( 5 ) and the second partial building structure ( 2 . 2 ;  2 . 2 ′;  2 . 2 ″) comprises a second substructure ( 3 . 2 ;  3 . 2 ′;  3 . 2 ″) and a second roadway construction ( 4 . 2 ) forming a second drivable surface ( 5 ), 
 an expansion joint ( 7 ) is present between the first substructure ( 3 . 1 ;  3 . 1 ′;  3 . 1 ″) and the second substructure ( 3 . 2 ;  3 . 2 ′;  3 . 2 ″) and 
 a bridging structure ( 9 ;  9 ′;  9 ″) spanning the expansion joint ( 7 ) and having a bracing plate ( 17 ;  17 ′;  17 ″) and an expansion body ( 10 ) braced thereby, cast in place from casting compound and forming a drivable surface ( 8 ) extends between the first roadway construction ( 4 . 1 ) and the second roadway construction ( 4 . 2 ), 
 
       with the following features:
 the casting compound of the expansion body is polymer-based; 
 the expansion body ( 10 ) has a multi-layered construction generated in several casting processes performed in succession; 
 at least two of the layers ( 31 ,  32 ,  33 ) of the expansion body ( 10 ) have compositions differing from one another. 
 
     
     
         2 . The drivable building structure of  claim 1 , wherein the casting compounds of the layers ( 31 ,  32 ,  33 ) of the expansion body ( 10 ) having different compositions are filled with different aggregates (Z). 
     
     
         3 . The drivable building structure of  claim 2 , wherein the casting compounds of the layers ( 31 ,  32 ,  33 ) of the expansion body ( 10 ) having different compositions have a matching polymer base. 
     
     
         4 . The drivable building structure of  claim 2 , wherein an aggregate (Z) of the uppermost layer ( 33 ) of the expansion body ( 10 ) forming the drivable surface ( 8 ) is provided with harder fillers than is an aggregate (Z) of a deeper layer ( 31 ,  32 ) of the expansion body ( 10 ). 
     
     
         5 . The drivable building structure of  claim 4 , wherein the fillers of the uppermost layer ( 33 ) of the expansion body ( 10 ) comprise hard particles (e.g. corundum). 
     
     
         6 . The drivable building structure of  claim 5 , wherein the uppermost layer ( 33 ) of the expansion body ( 10 ) consists at least up to 80 wt %, preferably at least up to 95 wt %, of polymer and hard particles. 
     
     
         7 . The drivable building structure of  claim 6 , wherein the ratio by weight of hard particles to polymer is between 0.75 and 0.95, preferably between 0.8 and 0.9. 
     
     
         8 . The drivable building structure of  claim 4 , wherein the fillers at least of one deeper layer ( 31 ,  32 ) of the expansion body comprise EPDM granules and/or rubber granules. 
     
     
         9 . The drivable building structure of  claim 8 , wherein the deeper layer ( 31 .  32 ) of the expansion body ( 10 ) containing EPDM granules and/or rubber granules as filler consists at least up to 80 wt %, preferably at least up to 95 wt % of polymer and EPDM and/or rubber granules. 
     
     
         10 . The drivable building structure of  claim 9 , wherein the ratio by weight of the total of EPDM granules and rubber granules to polymer is between 0.15 and 0.35, preferably between 0.2 and 0.3. 
     
     
         11 . The drivable building structure of  claim 1 , wherein the bridging structure has two base structures ( 13 . 1 ,  13 . 2 ;  13 . 1 ′,  13 . 2 ′;  13 . 1 ″,  13 . 2 ″) connected with the substructure ( 3 . 1 ,  3 . 2 ;  3 . 1 ′,  3 . 2 ′;  3 . 1 ″,  3 . 2 ″) of the respective partial building structure ( 2 . 1 ,  2 . 2 ;  2 . 1 ′,  2 . 2 ′;  2 . 1 ″,  2 . 2 ″), wherein the bracing plate ( 17 ;  17 ′;  17 ″) is received between portions ( 15 ) of the two base structures ( 13 . 1 ,  13 . 2 ;  13 . 1 ′,  13 . 2 ′;  13 . 1 ″,  13 . 2 ″) respectively forming a frame ( 16 ). 
     
     
         12 . The drivable building structure of  claim 11 , wherein the upper edges of the frames ( 16 ) and the surfaces ( 18 ) of the base structures ( 13 . 1 ,  13 . 2 ;  13 . 1 ′,  13 . 2 ′;  13 . 1 ″,  13 . 2 ″) adjoining them are substantially at the same level as the surface ( 19 ) of the bracing plate ( 17 ;  17 ′;  17 ″). 
     
     
         13 . The drivable building structure of  claim 11 , wherein the base structures ( 13 . 1 ,  13 . 2 ;  13 . 1 ′,  13 . 2 ′;  13 . 1 ″,  13 . 2 ″) are designed with a stepped configuration such that they have support portions extending under the bracing plate ( 17 ;  17 ′;  17 ″). 
     
     
         14 . The drivable building structure of  claim 11 , wherein the base structures ( 13 . 1 ,  13 . 2 ;  13 . 1 ′,  13 . 2 ′;  13 . 1 ″,  13 . 2 ″) consist of polymer concrete. 
     
     
         15 . The drivable building structure of  claim 11 , wherein retaining means for fixation of the expansion body ( 10 ) at its rims are mounted on the two base structures ( 13 . 1 ,  13 . 2 ;  13 . 1 ′,  13 . 2 ′;  13 . 1 ″,  13 . 2 ″). 
     
     
         16 . The drivable building structure of  claim 11 , wherein at least one of the base structures ( 13 . 1 ′) has a drivable surface ( 39 ). 
     
     
         17 . The drivable building structure of  claim 11 , wherein the base structures ( 13 . 1 ,  13 . 2 ;  13 . 1 ′,  13 . 2 ′;  13 . 1 ″,  13 . 2 ″) respectively have, for expansion body ( 10 ), an adhesive face ( 38 ) that is oriented substantially parallel to the working direction (A) of the expansion joint. 
     
     
         18 . The drivable building structure of  claim 11 , wherein a seal ( 6 ′) present between the substructure ( 3 . 1 ′) and the roadway construction ( 4 . 1 ) of a partial building structure ( 2 . 1 ′) extends under the associated base structure ( 13 . 1 ′). 
     
     
         19 . The drivable building structure of  claim 11 , wherein a bracing plate ( 17 ;  17 ′) is provided that is not divided in working direction (A) of the expansion joint. 
     
     
         20 . The drivable building structure of  claim 19 , wherein a highly compressible filler strip ( 21 ;  21 ′) extends along at least one end side-viewed in the working direction (A) of the expansion joint ( 7 )—of the bracing plate ( 17 ;  17 ′). 
     
     
         21 . The drivable building structure of  claim 18 , wherein the bracing plate ( 17 ′) that is not divided is fixed unilaterally on the substructure ( 3 . 1 ′) and/or on a base structure ( 13 . 1 ′) that may be placed thereon of one of the two partial building structures ( 2 . 1 ′). 
     
     
         22 . The drivable building structure of  claim 1 , wherein the bracing plate ( 17 ″) is designed in divided manner in working direction (A) of the expansion joint ( 7 ) and has two bracing-plate portions fixed respectively on the substructure ( 3 . 1 ″,  3 . 2 ″) of one of the two partial building structures ( 2 . 1 ″,  2 . 2 ″). 
     
     
         23 . The drivable building structure of  claim 22 , wherein the two fixed bracing-plate portions are designed to mesh into one another in toothed manner. 
     
     
         24 . The drivable building structure of  claim 22 , wherein the bracing plate ( 17 ″) is of a three-piece design in working direction (A) of the expansion joint ( 7 ), wherein the two fixed bracing-plate portions respectively form a rim portion ( 41 ,  43 ), between which a free bracing-plate portion ( 44 ) is received that on both sides is meshed in toothed manner with the respective adjoining rim portion ( 41 ,  43 ). 
     
     
         25 . The drivable building structure of  claim 1 , wherein a separating course ( 29 ) designed in particular as an elastomer web, especially as EPDM film ( 30 ), is situated between the bracing plate ( 17 ;  17 ′;  17 ″) and the expansion body ( 10 ). 
     
     
         26 . The drivable building structure of  claim 1 , wherein the polymer-based casting compound of the expansion body is provided especially with PMMA, PU and/or polyurea as the polymer base. 
     
     
         27 . The drivable building structure of  claim 26 , wherein PMMA forms the polymer base of the polymer-based casting compound of the expansion body for all layers ( 31 ,  32 ,  33 ) of the expansion body ( 10 ), wherein the expansion body ( 10 ) has an elongation after break of at least 100%, preferably at least 120%, in each of its layers ( 31 ,  32 ,  33 ). 
     
     
         28 . The drivable building structure of  claim 1 , wherein at least the lowermost layer ( 31 ) of the expansion body ( 10 ) consists of several portions joined to one another in longitudinal direction of the expansion joint ( 7 ) and cast in succession, and in that at least the uppermost layer ( 33 ) of the expansion body ( 10 ) is cast continuously, in a single work cycle, over the entire length of the expansion joint ( 7 ).