In order to meet the needs of motor vehicles,non-motorized vehicles and pedestrians crossing the river at the same time,the double-deck bridge with separation of motor vehicles and non-motorized vehicles has been applied in many urban constructions,achieving intensive utilization of river-crossing channels and improving the traffic conditions of motor vehicles and non-motorized vehicles,and also becoming a hydrophilic viewing platform for people.The structural forms of the double-deck bridge with separation of motor vehicles and non-motorized vehicles mainly include truss beam structure,cantilever structure and suspension structure.Combined with a case,according to the characteristics of medium span of main bridge and approach bridge,the lower slow-moving bridge adopts continuous steel box girder structure,and the transverse tie beam of wide bridge deck H-pier column is used as the fulcrum of continuous beam,and the upper and lower bridge decks share piers;the stiffness of the upper concrete beam is used between the spans,and the lower deck is suspended by the vertical suspension rods,forming a combination of beam and suspension systems.In the limited hoisting construction space,the steel box girder is erected as the transportation channel,and the segments are transported to the site by the rail-type girder carrier,and the special bridge erecting machine is used for span by span segment suspension and splicing construction.The design and construction experience can provide reference for similar engineering.
motor vehicle and non-motorized vehicle separationdouble-deck bridgecontinuous box girdersuspension rodsuspension and splicing
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