Novel bridge expansion joint

Abstract

The utility model relates to the technical field of expansion joints, and provides a novel bridge expansion joint which comprises a first bridge body, a second bridge body and a bridge expansion structure, the first bridge body is connected with the second bridge body through the bridge expansion structure, and the bridge expansion structure comprises an expansion device and an expansion joint steel rail arranged on a displacement box of the expansion device. The bridge telescopic structure further comprises a sealing glue layer, the two sides of the expansion joint steel rail are partially embedded into the lower portion of the first bridge body and the lower portion of the second bridge body respectively, and a first wave groove sunken towards the interior of the first bridge body is formed in the face, facing the expansion joint steel rail, of the first bridge body. The face, facing the expansion joint steel rail, of the second bridge body is provided with a second wave groove concaved towards the interior of the second bridge body, a groove formed by the first bridge body, the second bridge body and the expansion joint steel rail is filled with the sealant layer, and the upper surface of the first sealant layer is flush with the upper surface of the first bridge body and the upper surface of the second bridge body. The bridge expansion joint solves the problems that an existing bridge expansion joint is complex in structure, high in maintenance cost and poor in flatness with a bridge floor.

Description

TECHNICAL FIELD

[0001] The utility model relates to expansion joint technical field, especially a new type bridge expansion joint. BACKGROUND

[0002] At present, there are many highway bridges and provincial and county bridges in our country, in order to ensure driving safety, especially the detection, maintenance and other aspects of the bridge, the investigation and maintenance are carried out irregularly to ensure the service life of the bridge.

[0003] The bridge expansion joint is the main part of the bridge part, can play the expansion function of the bridge in the temperature difference and driving process, can balance between the bridge and the road surface, and makes driving safe and noiseless. Bridge expansion joint refers to the expansion joint set between two beam ends, beam end and abutment or hinge position of the bridge to meet the requirement of bridge deformation, which requires the expansion joint to freely expand in two directions parallel and perpendicular to the bridge axis, and be firm and reliable, smooth, without bump and noise when vehicles drive, and can prevent rainwater and garbage and soil from seeping in and blocking, and the installation, inspection, maintenance and elimination of dirt are simple and convenient, the rail and bridge deck pavement are disconnected at the expansion joint, and the function of the bridge expansion joint is to adjust the displacement and connection between the superstructure caused by vehicle load and bridge building materials. CONTENT

[0004] Therefore, aiming at the above problems, the utility model provides a new type bridge expansion joint which reduces the damage of the expansion joint steel rail and the repeated maintenance cost, and improves the flatness between the bridge deck and the expansion joint.

[0005] To solve the technical problem, the utility model adopts the following scheme: a new type bridge expansion joint, which comprises a first bridge body, a second bridge body and a bridge expansion structure, the first bridge body and the second bridge body are connected through the bridge expansion structure, the bridge expansion structure comprises an expansion device and an expansion joint steel rail arranged on a displacement box of the expansion device, the bridge expansion structure further comprises a sealing adhesive layer, two sides of the expansion joint steel rail are respectively partially embedded in the lower part of the first bridge body and the second bridge body, one side of the first bridge body facing the expansion joint steel rail is provided with a first wave groove recessed into the first bridge body, one side of the second bridge body facing the expansion joint steel rail is provided with a second wave groove recessed into the second bridge body, and the sealing adhesive layer is filled in the groove formed by the first bridge body, the second bridge body and the expansion joint steel rail, and the upper surface of the first sealing adhesive layer is flush with the upper surfaces of the first bridge body and the second bridge body.

[0006] Further improvement, the thickness of the sealing adhesive layer above the top of the expansion joint steel rail is 1cm-3cm.

[0007] The utility model discloses the beneficial effect is: set up the sealing rubber layer of new structure on bridge expansion structure, that is, through setting up first wave trough and second wave trough on first bridge body and second bridge body respectively, pours and fills the sealing rubber layer on the groove that first bridge body and second bridge body and expansion joint steel rail constitute, so that first bridge body and second bridge body constitute the deformation expansion joint with elastic shock attenuation and buffer performance under the cooperation of sealing rubber layer, make first bridge body or second bridge body and sealing rubber layer constitute a spring structure, the steel structure expansion and contraction force between first bridge body and second bridge body is buffered and attenuated by the deformation expansion joint structure of the application, thereby reducing the abrasion intensity of expansion joint steel rail, prolonging the service life of expansion joint, reducing the damage and repeated repair cost of expansion joint steel rail, reducing the cleaning and reducing the safety risk during cleaning of the maintenance department, avoiding the rigid collision of the vehicle to expansion joint steel rail, also reducing the safety accident and potential safety hazard of highway driving, and the pouring and filling of sealing rubber layer can also effectively improve the flatness between bridge deck and expansion joint, and the rigid support of expansion joint steel rail and the flexible cooperation of sealing rubber layer realize the combination of rigidity and flexibility, so that the bridge expansion structure is durable, and the vehicle driving through the bridge expansion joint is noiseless, undulating, achieves the effect of soft overcomes the hard, makes the vehicle more comfortable and stable when driving, has no shaking feeling, has no sound feeling, achieves the effect of flat, safe, stable and smooth, and the sealing rubber layer is flush with first bridge body and second bridge body, which can effectively prevent rainwater penetration and dust and sand from falling into the bridge expansion joint and damage the expansion device structure of the bridge expansion structure, and the expansion joint does not need to be cleaned regularly, and can be widely applied. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 It is the part sectional structure schematic diagram of the utility model embodiment. DETAILED DESCRIPTION

[0009] The utility model will be further illustrated in combination with the drawings and specific embodiment, wherein the expansion device structure in bridge expansion structure is the existing structure, and a plurality of expansion devices have been disclosed in Chinese patent documents, such as: CN202121210946.2, CN202221802033.4, CN202222068375.4, CN202122388734.X and the like, and only the innovative design part structure of the application is described in detail below.

[0010] REFERENCE Figure 1, preferably the utility model discloses a novel bridge expansion joint, including first bridge body 1, second bridge body 2 and bridge expansion structure, first bridge body 1 with second bridge body 2 is connected through bridge expansion structure, and the bridge expansion structure includes expansion device, expansion joint steel rail 3 and sealing rubber layer 4 arranged on the displacement box of expansion device, the first bridge body 1 is provided with the first wave groove 11 recessed to the first bridge body 1 on the side to expansion joint steel rail 3, the second bridge body 2 is provided with the second wave groove 21 recessed to the second bridge body 2 on the side to expansion joint steel rail 3, the sealing rubber layer 4 is filled in the groove formed by first bridge body 1 and second bridge body 2 and expansion joint steel rail 3 and sealing rubber layer 4 upper surface is flush with the upper surface of first bridge body 1 and the upper surface of second bridge body 2.

[0011] The thickness of the sealing rubber layer on the top of the expansion joint steel rail in the above embodiment is preferably 1cm-3cm. The thickness of the sealing rubber layer on the top of the expansion joint steel rail is set on the basis that the upper surface of the sealing rubber layer is flush with the upper surface of the first bridge body and the upper surface of the second bridge body. If the surface difference is greater than 3cm, a layer of steel plate can be added on the top of the expansion joint steel rail to fill the thickness difference between the expansion joint steel rail and the upper surface of the first bridge body or the upper surface of the second bridge body, effectively ensuring the structure performance of the sealing rubber layer and the expansion joint steel rail.

[0012] Although the utility model is specifically shown and introduced in combination with the preferred embodiment, those skilled in the art should understand that various changes can be made to the utility model in form and details without departing from the spirit and scope of the utility model defined by the appended claims, and all are within the protection scope of the utility model.

Claims

1. A novel bridge expansion joint, comprising a first bridge body, a second bridge body, and a bridge expansion structure, wherein the first bridge body and the second bridge body are connected by the bridge expansion structure, and the bridge expansion structure includes an expansion device and an expansion joint rail disposed on the displacement box of the expansion device, characterized in that: The bridge expansion structure further comprises a sealing glue layer, two sides of the expansion joint steel rail are respectively partially embedded in lower parts of the first bridge body and the second bridge body, one side of the first bridge body facing the expansion joint steel rail is provided with a first wave groove recessed into the first bridge body, one side of the second bridge body facing the expansion joint steel rail is provided with a second wave groove recessed into the second bridge body, and the sealing glue layer is filled in a groove formed by the first bridge body, the second bridge body and the expansion joint steel rail and an upper surface of the first sealing glue layer is flush with upper surfaces of the first bridge body and the second bridge body.

2. The novel bridge expansion joint according to claim 1, characterized in that: The sealing glue layer is located above the top of the expansion joint steel rail and has a thickness of 1cm-3cm.

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