Steel deck composite pavement structure laying grid type shear connectors

Abstract

The invention discloses a steel deck composite pavement structure laying grid type shear connectors. The steel deck composite pavement structure comprises a steel deck plate, a lightweight concrete lower surface layer laid on the steel deck plate and an asphalt concrete upper surface layer laid on the lightweight concrete lower surface layer, wherein a waterproof bonding layer is arranged between the lightweight concrete lower surface layer and the asphalt concrete upper surface layer; the grid type shear connectors are laid in the lightweight concrete lower surface layer, the grid type shear connectors comprise multiple longitudinal connectors which are laid in the longitudinal direction of a bridge and multiple transverse connectors which are laid in the transverse direction of the bridge, and the multiple longitudinal connectors are connected into a whole through the multiple transverse connectors; the longitudinal connectors are of long strip-shaped steel plates fixed on the steel desk plate and the transverse connectors are of steel bar bundles; and a plurality of holes are formed at the middle parts of the long strip-shaped steel plates from the front to the back. The steel deck composite pavement structure disclosed by the invention has the advantages of simple structure, reasonable design, simplicity and convenience in construction and good stress performance, and can solve the problems that an asphalt surface layer of the existing steel desk pavement structure is prone to rutting, slippage delamination, upheaval and the like.

Description

technical field [0001] The invention relates to a bridge deck pavement structure, in particular to a steel bridge deck composite pavement structure with grid-type shear connectors. Background technique [0002] At present, with the construction and development of long-span bridges in my country, steel deck pavement is more and more widely used in long-span bridges due to its characteristics of convenient construction, light weight, and economical economy. A large number of existing bridges at home and abroad have used this pavement form. Nowadays, most of the surface layers of steel bridge deck pavement structures are asphalt surface layers formed of asphalt pavement materials. The force and deformation of the asphalt pavement are very complex, so in the actual use process, the commonly used asphalt pavement has the following defects and deficiencies to varying degrees: First, the tensile strength, shear strength and compressive strength of asphalt pavement materials are re...

AI Technical Summary

Problems solved by technology

Nowadays, most of the surface layers of steel bridge deck pavement structures are asphalt surface layers formed of asphalt pavement materials. The force and deformation of the asphalt pavement are very complex, so in the actual use process, the commonly used asphalt pavement has the following defects and deficiencies to varying degrees: First, the tensile strength, shear strength and compressive strength of asphalt pavement materials are relatively low. The phenomenon of cracking, delamination and rutting of the steel bridge pavement structure is very common; second, the thermal stability of the asphalt pavement layer is insufficient, and the mixture of the pavement layer will The material is easy to creep and correspondingly forms permanent deformation, and long-term accumulation will cause rutting; third, the asphalt pavement has a greater tendency to follow the deformation of the steel bridge deck, which can easily lead to the formation of rutting, wrapping and other diseases on the pavement; Fourth, the bonding force between the asphalt pavement and the steel bridge deck is insufficient, which is prone to slipping and delamination, and then cracking

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