Prefabricated segment bridge joint structure and construction method

Abstract

The invention discloses a prefabricated segment bridge joint structure which comprises a bridge prefabricated segment, one end of the bridge prefabricated segment is provided with a trapezoidal shear concave key, and the other end of the bridge prefabricated segment is provided with a trapezoidal shear convex key; frameworks are installed on the inner sides of the bridge prefabricated segments, strip-shaped steel plates are installed on the frameworks, and one ends of the strip-shaped steel plates extend into the trapezoid shear convex keys. A prefabricated segment bridge joint construction method comprises the following steps that the size is determined, and materials are prepared; manufacturing a reinforcement cage and mounting strip-shaped steel plates; a formwork is erected, concrete is poured, and the bridge prefabricated segments are formed; coating epoxy resin glue; and assembling the bridge prefabricated sections. The shear resistance of the prefabricated segment bridge joint is improved through the combined action of the bridge prefabricated segments and the strip-shaped steel plates, shear key damage caused by collision in the transportation or construction process is avoided, the trapezoidal shear convex keys and the trapezoidal shear concave keys are connected through the clamping mechanisms, and the installation efficiency is improved; the problem that the shear capacity of the prefabricated bridge joint is insufficient is effectively solved.

Description

technical field [0001] The invention belongs to the technical field of bridge engineering, and particularly relates to a prefabricated segment bridge joint structure and a construction method. Background technique [0002] The rapid bridge construction technology can realize the standardized design, factory prefabrication, mechanized transportation, and assembly construction of bridge construction, and combined with intelligent and information technology, realize the full prefabricated assembly construction of bridge construction, with fast on-site construction speed and existing environment. It has many advantages such as low interference, high structural construction quality, and high construction safety. [0003] The division of segments makes the bridge structure have multiple joints, which makes the mechanical properties of prefabricated components different from those of cast-in-place bridges. In order to improve the mechanical properties and durability of prefabricat...

AI Technical Summary

Problems solved by technology

[0006] In view of this, the object of the present invention is to provide a prefabricated section bridge joint structure and construction method, which is used to solve the problem of installation of connecting steel bars after the splicing of bridge prefabricated sections in the prior art, which makes the operation troublesome and the concrete shear force The key is relatively fragile, and it is prone to collision during transportation and construction, resulting in the failure of the shear key, and the concrete shear key is easily sheared under the shear load

Images