Improved prestressed steel reinforced concrete beam and bridge construction method using the same beam

摘要

The present invention end portions are produced by introducing a prestress to type I beam middle has the abdomen is central bore type I steel beam through holes a central portion of the I-shaped steel is formed by connecting each other in the I-beams at both ends of T-shaped steel or steel by installing prestressed steel reinforced concrete beam to the fulcrum portion relates to a construction method for simple bridges or by installing them continuously connected to each other to install the bridge.; Both ends of the I-type beam the central section of the T-shaped steel or the steel sheet forming the tube study of a predetermined size in the abdominal center portion of the I-shaped steel is formed by connecting each other in the I-beam in the both end portions T-shaped steel material part and the I-type steel forming a connecting portion at the respective side end portions of a predetermined length, it creates a central bore type I steel beam install a pair of the fixing bracket to the upper surface of both sides of the T-shaped steel material of the upper flange of the I-beam steel, and; As reinforcement for reinforced on the outside of the central bore type I steel beam, extending the reinforcement of constant length to the connection portion of the side end portions, and a plurality of install the PC steel anchorage for fixing a PC steel wires in the connection portion, and the connecting portion by installing triangular feet on the steel bottom flange, and introducing the into the bottom of the beam bottom flange which buried the gyojwa device support, and then poured curing the central bore type I concrete to the steel beam, except for the connection prestressed in the following the PC steel Prestressed after making the steel-reinforced concrete beam,; The prestressed steel reinforced concrete beams the angle of intersection and shift the fulcrum portion installed vertically and horizontally in simple bridges the installation, or to each other and subsequently installed in the prestressed steel reinforcement opposite sides of the steel upper flanges and the connection abdomen of the connection formed on both sides of the concrete beam to the respective steel upper flange connection and the connection plate to install a prestressed steel-reinforced concrete bridge beam to install continuous bridge sequencing respectively bolted abdominal connection plate.; The simple T or sequencing bridge is the central portion is the through hole far been produced by a light beam, the portion on the other hand, the central cylinder study in which to reduce the dead load of the bridge is frontal cement action connection plate than the weight of the conventional I-type steel used to effect that flew and to resist deflection by connecting up and down a weight enemy than the conventional beam hameuroseo to enhance the load carrying capacity strength efficiently and reduce the construction cost of strongly to the load acting on the bridge whereas the manufacturing cost reduction effect the economic value is to enable the installation of the enhanced bridge.