Assembly type hollow slab bridge adopting bracket to replace ribbet to transmit force

Abstract

The invention relates to an assembly type hollow slab bridge adopting a bracket to replace a ribbet to transmit force, comprising a side slab and a middle slab of an assembly type hollow slab, wherein which the side slab and the middle slab of an assembly type hollow slab are mutually matched, a part or all of the top slab of the middle slab of the assembly type hollow slab extends towards one side to form a prominent bracket, and a combination part of a web slab and the top slab at the other side is provided with a bracket supporting surface matched with the bracket; and the top slab at one side of the side slab of the assembly type hollow slab is provided with a bracket matched with the bracket supporting surface of the middle slab of the assembly type hollow slab, or the combination part of the web slab and the top slab at one side of the side slab of the assembly type hollow slab is provided with a bracket supporting surface matched with the bracket of the middle slab of the assembly type hollow slab. The force transmission mode by adopting the bracket structure to transmit shearing force is clear, can be used for transmitting the shearing force between adjacent hollow slabs along the transverse direction of the bridge, improving the transverse connection between the assembly type hollow slabs and homogenizing the transverse load distribution and has the advantages of simple structure, mature design and calculation, no need of changing the bridge deck pavement and simple and convenient construction.

Description

technical field [0001] The invention relates to the field of construction, in particular to an assembled hollow slab bridge that uses corbels instead of grooved joints for force transmission. Background technique [0002] The existing prefabricated hollow slab bridges are composed of several prefabricated reinforced concrete or prestressed concrete hollow slabs of a certain width (reinforced concrete hollow slabs are used when the bridge span is small, and prestressed concrete hollow slabs are used when the bridge span is large. The prestressed concrete hollow slab commonly used in bridge engineering is used as an example to illustrate), and the hollow slabs are connected with the bridge deck by filling the concrete with the tongue-and-groove joint between the slabs, forming a hollow slab bridge that is assembled first and then integrated. The hollow slab of this type of bridge can be prefabricated in the factory or the beam factory on the construction site. The cross sectio...

AI Technical Summary

Problems solved by technology

When the pavement effect of the bridge deck is not considered, since the adjacent hollow slabs are only connected by grooved steel bars and concrete, the ability to transmit shear force is limited, and the transverse integrity of the bridge is poor, and the bridge deck is prone to occurrence of grooves at the position of grooved joints. The cracks along the longitudinal direction of the bridge, especially the concrete of the tongue and groove joints between the slabs, loosen and fall off, resulting in insufficient horizontal connection of the whole bridge, forming a single plate under force, destroying the pavement layer of the bridge deck, causing driving bumps, and thus affecting the bridge. The normal use and durability of the bridge have left many hidden dangers to the safety of bridge traffic.

[0003] Chinese patent document CN101644032A discloses a road bridge reinforcement process of removing beams and adding ribs, but it also fails to solve the above problems

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