JOINT FOR MAIN SPAN STRUCTURE CONNECTION WITH ACCESS (EXIT) SPAN STRUCTURE ADJOINING THERETO Russian patent published in 2007 - IPC E01D2/00 E01C1/04 

FIELD: bridge construction, particularly bridges characterized by the cross-section of their bearing spanning structure.

SUBSTANCE: joint comprises metal main span structure provided with diaphragms and orthotrophic roadway slab having transversal ribs extending transversely to longitudinal span structure axis. Diaphragms are also transversal thereto. United with main span structure is access (exit) one. Access (exit) span structure includes several layers and comprises longitudinal beams extending along exit axis. The beams are connected with each other by means of diaphragms and include roadway cooperating with longitudinal beam and made as orthotrophic slab having stricture similar to that of orthotrophic roadway slab. Said orthotrophic slab is supported by longitudinal beams of access (exit) span structure. Transversal ribs of orthotrophic slab and access (exit) span structure diaphragm extend in the same direction with transversal rib extensions and main span structure diaphragms. The access (exit) span structure is joined with main beams of main span structure through diaphragms. Longitudinal beams of access (exit) span structure are connected with transversal ribs of orthotrophic roadway slab of access (exit) span structure.

EFFECT: possibility to provide access (exit) in any main span structure point.

4 dwg