Stunning mountain highway elevated bridge column group

The overall view of the double row parallel rectangular thin-walled high pier elevated bridge is that large rectangular concrete piers stand neatly on a large excavated red soil foundation pit. Multiple layers of carbon fiber reinforced steel strips are horizontally wrapped around the outer surface of the pier body, and horizontal connecting beams are set up above and below to enhance overall stability. The bridge deck beams and slabs have been fully erected. Excavators and engineering transport vehicles are synchronously carrying out slope support and earthwork finishing operations in the foundation pit under the bridge. This carbon fiber external reinforcement process is a mainstream mature technology for reinforcing and repairing existing elevated structures and diseases in mountainous deep excavation areas. The site is a deep foundation pit formed by large-scale excavation. After excavation, the stress of the soil on both sides is released, which easily generates lateral soil pressure on the completed bridge piers. In addition, the temperature difference between day and night in mountainous areas and the alternation of dry and wet rainwater can cause durability hazards such as fine cracks and surface weathering and peeling on the concrete pier body, directly affecting the long-term traffic safety of the elevated road. Therefore, the project adopts a carbon fiber composite reinforcement system. A transverse carbon fiber band is pasted on the cleaned and polished surface of the pier body to form a continuous surrounding tensile restraint layer, limiting the continuous expansion of concrete cracks. The transverse connecting beam rigidly connects the parallel bridge piers as a whole, dispersing the lateral displacement risk caused by unilateral soil pressure. Carbon fiber material has an extremely light weight and far higher strength than ordinary steel. After reinforcement, it will not significantly increase the weight of the bridge pier, nor does it require a larg