Non-steel seamless bridge expansion joint device and construction technology thereof

Abstract

The invention relates to a novel safe bridge expansion joint structure, in particular to non-steel seamless bridge expansion joint device and a construction technology thereof. The non-steel seamlessbridge expansion joint device mainly comprises leveling layers, a water proof layer, an expansion layer, a bonding layer, an asphalt paving layer and a wearing surface layer, the leveling layer, the water proof layer, the expansion layer, the bonding layer, the asphalt paving layer and the wearing surface layer are based on the bottom surface of the expansion position of a bridge body, the leveling layers are high strength mortar layers, the water proof layer is an asphalt water proof protective sliding layer and is paved on the surfaces of the two leveling layers, the expansion layer is of composite layer structure, and the expansion layer comprises an expansion carrier layer and stress releasing layers on the two sides; and the bonding layer, the asphalt paving layer and the wearing surface layer are paved on the expansion layer, and the wearing surface layer comprises a stress releasing strip layer with the same thickness as the wearing surface layer. According to the non-steel seamless bridge expansion joint device, structure design is safe and practical, the construction technology is simple, the action function of expansion joint improvement is achieved after construction iscompleted, thus vehicle runs smoothly, vehicle load can not directly act on the bridge body or the expansion joint, consuming time of mounting construction is short, the structure is convenient to maintain, environmental protection and energy saving are achieved, and large amount of steel materials and concrete materials can be saved.

Description

technical field [0001] The invention relates to a novel and safe bridge expansion joint structure, in particular to a steelless seamless bridge expansion joint device and its construction technology. Background technique [0002] In the current bridge construction, in order to meet the expansion and contraction deformation requirements of the bridge, expansion joints are set between the two girder ends, between the girder end and the abutment, or at the hinge position of the bridge to meet the deformation requirements of the bridge deck. The setting requires that the expansion joints can freely expand and contract in two directions parallel to and perpendicular to the bridge axis, and are firm and reliable. The displacement and connection between the superstructure caused by the vehicle load and bridge building materials, if the telescopic device of the skew bridge is damaged, will seriously affect the speed, comfort and safety of driving, and even cause serious driving safe...

AI Technical Summary

Problems solved by technology

[0002] In the current bridge construction, in order to meet the expansion and contraction deformation requirements of the bridge, expansion joints are set between the two girder ends, between the girder end and the abutment, or at the hinge position of the bridge to meet the deformation requirements of the bridge deck. The setting requires that the expansion joints can freely expand and contract in two directions parallel to and perpendicular to the bridge axis, and are firm and reliable. The displacement and connection between the superstructure caused by the vehicle load and bridge building materials, if the telescopic device of the skew bridge is damaged, it will seriously affect the speed, comfort and safety of driving, and even cause serious driving safety accidents

[0003] At present, bridge expansion joints are basically made of section steel, and then reinforced concrete is used to install them at the expansion joints of the bridge. No matter what type of expansion joint it is, it needs to be processed, manufactured, transported, hoisted, installed and other procedures to complete the production. ;When the expansion joint is installed, it needs to be fixed with steel bars, and then high-grade concrete is rammed. The production and installation of the expansion joint in this process requires a large amount of special steel and reinforced concrete. This expansion joint structure is easy to produce under the repeated action of driving load After the damage, the same amount of non-renewable garbage will be produced. At the same time, the same amount of steel and reinforced concrete is required for repair during the repair process, and the repair time is longer, which seriously affects the smooth flow of traffic.

[0004] The construction quality of the bridge expansion joints is also closely related to the construction technology, especially the expansion joints in the construction process or after construction need to be directly exposed to the outside, and the direct contact with the wheels is very easy to cause damage. In addition, the existing bridge In the expansion joint, due to its structural factors, not only the noise is loud when the vehicle is running, but also it is easy to be damaged and it is difficult to repair the expansion joint when it is damaged, which seriously affects the driving safety and comfort.

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