Preplex beam and method of construction of bridge superstructure using this preflex beam and deck plate

摘要

Construction of the preplex to allow the construction of the superstructure of the bridge quickly, safely, sexually and economically without the use of demoulding frames requiring pedestals, and the superstructure of the bridge using the preflex beam and deck plate The method relates to a conventional preflex beam having a reinforcing flange reinforced only by reinforced concrete, wherein the reinforcing-concrete reinforcing web (3) is applied to the web (2) except the lower part of the upper flange (6). And the upper flange (2) on the upper sides of the reinforcing web (3) to form a coping (4) throughout the length of the preflex beam to serve as a deck plate support instead of a formwork for top plate construction. The web (2), except for the lower part of 6), is reinforced with reinforcing-concrete reinforcing webs (3), and the upper sides of the reinforcing webs (3) Copings (4) are formed throughout this area, and on the sides of the reinforcing webs (3) there are connecting roots (5) for side connections with adjacent preflex beams and between the upper flanges (6) and the upper surface of the copings (4). The deck plate for replacing the formwork for top plate construction between the copings (4,4) of the adjacent preflex beam (1,1) is placed on the piers with the preflex beam (1,1) from which the upper muscle (7) (10), the connecting rods (5, 5) are connected to each other by the connecting reinforcing bar (13) and then the formwork is installed and the upper barrel connecting bars (7, 7) are connected to the upper plate (15) After the concrete of the cross beam is cured, the formwork is demolished and the deck plate 10 is a permanent method of construction of the bridge superstructure.