Abstract:Due to the requirements of landscape modeling, the canopy of the pedestrian bridge is often designed as a complex special-shaped structure. Under the action of wind load, it will have a greater impact on the force of the UHPC main beam structure with thin plate. Taking a UHPC box girder pedestrian bridge in the expressway reconstruction of a road in Guangzhou as the research object, the key nodes of the UHPC pedestrian bridge with complex canopy structure under wind load are analyzed and studied, including the anti-torque calculation of prefabricated ultrahigh concrete bridge, the joint treatment of precast box girder segment with high torque, the treatment mode of main canopy bar at the anchoring point of box girder, and the post-pouring treatment of bridge stairway corbels and transverse partitions with super-wide transportation width.
