Modular hinged prefabricated assembled truss composite beam structure

Abstract

The invention discloses a modular hinged prefabricated assembled truss composite beam structure which comprises a main truss rod. The number of the panel assemblies is multiple, and the multiple panel assemblies are arranged in the longitudinal bridge direction; a plurality of main truss rods are arranged below the panel assembly at intervals in the transverse bridge direction, and every two adjacent main truss rods are hinged in the longitudinal bridge direction. A plurality of joints are formed in the panel assembly, the plurality of joints divide the panel assembly into a first panel and a second panel, and at least two main truss rods are arranged below each of the first panel and the second panel; a longitudinal bridge direction support assembly; a transverse bridge direction supporting assembly; the adjacent first panels and second panels are connected through the wet joints, and the two adjacent first panels and the two adjacent second panels are connected through the wet joints. According to the invention, the problem of fatigue cracking of the concrete bridge deck at each connection part caused by over-strong constraint of the concrete bridge deck and the truss rod piece of the traditional truss composite beam bridge is avoided, meanwhile, the full-factor factory prefabrication and modular rapid assembly mode of the bridge structure is realized, and the construction speed is accelerated.

Description

technical field [0001] The invention relates to the technical field of truss composite girder bridges, in particular to a modular hinged prefabricated assembled truss composite girder structure. Background technique [0002] Truss members are widely used in bridge engineering relying on their own advantages such as light weight, clear force, and easy assembly. However, as shown in the accompanying drawings figure 1 In the traditional truss composite beam shown, the truss members are directly inserted into the concrete bridge deck, and are cast as a whole with the concrete bridge deck, which makes the concrete bridge deck and the truss members form fixed end restraints. Due to the large difference in stiffness between the two, fatigue cracking is likely to occur at the junction of the truss member and the concrete bridge deck under the reciprocating action of the vehicle load, which increases the risk of long-term exposure to the corrosive environment inside the bridge deck....

AI Technical Summary

Problems solved by technology

Due to the large difference in stiffness between the two, under the reciprocating action of the vehicle load, fatigue cracks are likely to occur at the junction of the truss members and the concrete bridge deck, which increases the risk of long-term exposure of the bridge deck to the corrosive environment. In severe cases, it directly affects safety of bridge structures

Images