Municipal road and bridge engineering has the characteristics of large scale and complex technology, which requires more advanced construction technology in the construction process. Among them, prestressed constructi...Municipal road and bridge engineering has the characteristics of large scale and complex technology, which requires more advanced construction technology in the construction process. Among them, prestressed construction technology can greatly improve the engineering quality of road and bridge engineering, and has the advantages of easy operation and low cost. Precast box girder has been widely used in road and bridge engineering. The common spans are 25m, 30m, 40m and so on. As a simply supported beam structure, the larger the span, the greater the bending moment in the beam under vehicle load. In the construction of roads and bridges, it is necessary to promote the application of prestressed construction technology, carry out construction operations in strict accordance with the key points of prestressed construction technology, improve the construction efficiency and construction quality of road and bridge projects, prolong the service life of road and bridge projects, and provide a strong guarantee for people's travel safety.展开更多
文摘Municipal road and bridge engineering has the characteristics of large scale and complex technology, which requires more advanced construction technology in the construction process. Among them, prestressed construction technology can greatly improve the engineering quality of road and bridge engineering, and has the advantages of easy operation and low cost. Precast box girder has been widely used in road and bridge engineering. The common spans are 25m, 30m, 40m and so on. As a simply supported beam structure, the larger the span, the greater the bending moment in the beam under vehicle load. In the construction of roads and bridges, it is necessary to promote the application of prestressed construction technology, carry out construction operations in strict accordance with the key points of prestressed construction technology, improve the construction efficiency and construction quality of road and bridge projects, prolong the service life of road and bridge projects, and provide a strong guarantee for people's travel safety.
