Steel bar binding and corrugated pipe locating device for precasting box girder

Abstract

The invention discloses a steel bar binding and locating and corrugated pipe pipeline coordinate locating device adopted in box girder precasting construction. The device comprises inverted-trapezoid-shaped locating structure units. The lower ends of the inverted-trapezoid-shaped locating structure units are connected through longitudinal steel bars (4) to form a box girder steel bar framework. Bottom stirrup locating bars (6) are arranged between the longitudinal steel bars (4). The upper ends of the inverted-trapezoid-shaped locating structure units are also provided with top stirrup locating bars (5). Transverse sleeves (7) are mounted on the waists of the inverted-trapezoid-shaped locating structure units. The transverse sleeves (7) are matched with horizontal steel bar locating plug pin devices (8) and corrugated pipe locating plug pin devices (9). The horizontal steel bar locating plug pin devices (8) and the corrugated pipe locating plug pin devices (9) are used for web horizontal steel bar locating and corrugated pipe pipeline coordinate locating respectively. The device is suitable for box girder precasting construction of an expressway through a post-tensioning method and achieves the technical effect of locating of web horizontal bars, web stirrups and corrugated pipe pipeline coordinates during box girder precasting through the post-tensioning method. With respect to construction of a precast hollow slab, a steel bar locating frame and a corrugated pipe pipeline coordinate locating device can also be designed and made according to the device.

Description

technical field [0001] The invention relates to a device for binding and positioning steel bars of post-tensioned prefabricated box girders and bellows pipe coordinates for expressways. Background technique [0002] In the past, prefabricated box girder reinforcement was bound using steel binding molds, and the tires were used to control the position and spacing of steel bars, the inclination and verticality of web stirrups. When designing, processing and manufacturing the mold, not only the strength and rigidity of the mold should be considered to meet the external loads such as the self-weight of the steel bar and the operator, but also the convenience of the steel bar binding operation and accurate positioning should be considered to ensure that the steel bar binding is installed within the allowable deviation range. Make the quality of the steel skeleton and mesh conform to the design and specification requirements. The bottom web binding mold of the existing prestresse...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a post-tensioned prestressed prefabricated box girder steel bar binding location and bellows positioning device to adapt to the box girder bottom plate, web horizontal tendon and stirrup spacing, and prestress Reinforced corrugated pipe coordinates need to overcome the shortcomings of existing technologies such as spatial position interference, steel bar spacing, and inaccurate bellows pipe coordinates

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