Prestressed reinforced concrete hollow slab bridge is one of the most widely used bridge types in China because of its advantages:simple structure,economy,high durability and beautiful shape.Based on the analysis of prototype test theory,a hollow plate simply supported bridge is strengthened,and the flexural performance of three simply supported hollow plate beams under load and different reinforcement forms are compared.The results show that under the first order load of highway,the bending stiffness of hollow floor can be increased by 20.2%.The bond between the pavement layer and the main beam is strengthened after the reinforcement of the pavement layer,which can effectively overcome the strain lag of the concrete in the compression zone of the composite structure.Through the addition of the overlay,the height of the section of the composite structure can be improved,the stiffness of the beam be strengthened,the strain of the fiber on the edge of the concrete be reduced,and the anti-cracking performance of the beam be improved.
维普
万方数据