The steel structure platform bridge is generally built in the section with large traffic flow and dense pedestrians, which is used to avoid the direct contact between traffic flow and pedestrians, ensure the safety of pedestrians, increase the speed and reduce the occurrence of traffic accidents.
Steel structure flatform bridge has large span, beautiful appearance, safety and stability; steel structure has light weight, high strength and large span, which is suitable for long-span bridges, and platform bridge can just be suitable for long-span design; steel structure platform bridge reduces the use of sand, stone and ash, and its materials can be recycled, with good environmental protection performance. The steel structure pedestrian overpass has good seismic (vibration) performance, when people walk on it, it will not produce shaking motion.
Compared with other ways of crossing the street, the steel structure platform bridge is safer, simpler and faster. The steel structure pedestrian overpass also has its shortcomings. For the elderly and the disabled, the overpass will cause their travel inconvenience. But now many overpasses are based on the consideration of humanization, some will set up escalators or escalators for the disabled.
