CN219430516U - Hidden plate type bridge expansion device - Google Patents

Abstract

The utility model discloses a hidden plate type bridge expansion device, which comprises a fixed cassette, wherein the fixed cassette consists of a straight section and an inclined section, the included angle between the inclined section and the horizontal direction is between 0 and 15 degrees, and the inclined section is embedded at one side beam end; one end of the seam crossing plate is in a comb tooth shape, each comb tooth is inserted into a corresponding fixed cassette, and the other end of the seam crossing plate is anchored at the beam end at the other side through the anchor bolt. According to the utility model, the structure of the traditional steel comb plate expansion device is improved, a fixed cassette structure is introduced, the seam crossing plate comb teeth can freely slide in the fixed cassette, meanwhile, the comb teeth can be restrained and limited, and uneven roads caused by upwarp and deformation of the comb teeth are avoided.

Description

Hidden plate type bridge expansion device

Technical Field

The utility model relates to the technical field of bridge expansion joint construction, in particular to a hidden plate type bridge expansion device.

Background

Because bridge telescoping device mainly sets up in the weaker position of structure such as beam end, not only directly bear the repeated impact effect of wheel load, expose in the nature for a long time moreover, the service environment is abominable, very easily causes the damage of telescoping device and causes bridge floor and beam slab's destruction. The damage of the bridge expansion joint can cause great vehicle impact load, worsen driving conditions and drastically reduce the service life of the bridge. This requires the bridge expansion joints to have good durability, waterproofness, driving comfort, construction convenience, and economic rationality.

The existing bridge comb plate expansion device is more in application and has the following main characteristics: the expansion joint is made of pure steel, and cannot adapt to the multidirectional displacement of the expansion joint part, so that the expansion device is broken and damaged when being provided with parts such as anchoring parts; the telescopic performance of the comb is realized through the mutually meshed comb teeth, the comb teeth are easy to warp and deform, and the driving safety is seriously affected.

Disclosure of Invention

Aiming at the problems that the comb plate expansion device is high in rigidity, comb teeth are easy to warp and deform, maintenance workload is high and the like, the utility model provides the hidden plate type bridge expansion device and a construction method thereof. The elastic deformation of the telescopic device can meet the requirement of multidirectional displacement of the bridge beam end such as horizontal, vertical and torsion. The structure of the pre-buried fixed cassette is adopted for the first time, the fixed cassette is embedded in notch concrete, the seam crossing plate comb teeth can slide freely in the fixed cassette, meanwhile, the comb teeth can be restrained and limited, uneven roads caused by upwarp and deformation of the comb teeth are avoided, in addition, the contact surface between wheels and the telescopic device is reduced by the fixed cassette structure, and driving noise can be reduced; by improving the construction method, the construction is simple and convenient, and large construction machinery is not needed.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

a hidden panel bridge expansion device comprising:

the fixed cassette consists of a straight section and an inclined section, wherein the included angle between the inclined section and the horizontal direction is 0-15 DEG, and the inclined section is embedded at one side beam end;

and one end of the seam crossing plate is in a comb tooth shape, each comb tooth is inserted into a corresponding fixed cassette, and the other end of the seam crossing plate is anchored at the beam end at the other side through the anchor bolt.

The utility model further discloses the following technology:

preferably, the beam end gap is provided with a water guide structure.

Preferably, the seam crossing plate top and the comb teeth are flexible structures, the seam crossing plate is internally provided with a steel plate, the steel plate is arranged at the bottom of the seam crossing plate, the built-in steel plate spans a beam end gap, a stainless steel sliding plate is arranged above one side beam end, and the steel plate is in contact with the stainless steel sliding plate.

Preferably, the beam end at the other side is provided with a notch, the threaded sleeve is embedded in the notch of the beam body, and the joint crossing plate is provided with an anchor bolt screwed into the threaded sleeve.

Preferably, the threaded sleeve is fixedly connected with the embedded bars at the beam end at the other side through spot welding.

Preferably, stress relief grooves are formed in the seam crossing plate and located between the anchoring bolts.

Preferably, the fixed cassette is welded and fixed through a positioning steel bar and a side beam end embedded steel bar.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the structure of the traditional steel comb plate expansion device is improved, a fixed cassette structure is introduced, the seam crossing plate comb teeth can freely slide in the fixed cassette, and meanwhile, the comb teeth can be restrained and limited, so that uneven roads caused by upwarp and deformation of the comb teeth are avoided;

the fixed cassette structure reduces the contact surface between the wheels and the telescopic device, and can reduce driving noise. The stress release groove is arranged between the anchor bolts, so that stress concentration between the anchor bolts and the seam crossing plate can be reduced.

The top of the seam crossing plate and the comb teeth are flexible structures, and the requirements of multi-directional deflection of the bridge beam end such as horizontal, vertical, torsion and the like are met through elastic deformation of the seam crossing plate and the comb teeth.

The built-in steel plate can increase the seam crossing capacity, increase the rigidity of the telescopic device and ensure the structural safety.

A brand new hidden plate type bridge expansion device is created, meanwhile, large-scale construction machinery is not needed, quick construction can be realized, and the hidden plate type bridge expansion device is suitable for popularization and application.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic view of a cross-stitch plate of the present utility model;

FIG. 3 is a schematic view of a fixed cassette of the present utility model;

FIG. 4 is a schematic view of the present utility model in a mated state with a fixed cassette and a slit plate;

the numbers in the figures are: 1-fixed cassette, 1 a-fixed cassette straight section, 1 b-fixed cassette inclined section, 2-seam crossing plate, 3-built-in steel plate, 4-water guide structure, 5-stainless steel slide plate, 6-positioning steel bar, 7-anchoring bolt, 8-thread sleeve, 9-stress releasing groove, 10-comb teeth, 11-notch concrete, 12-notch embedded steel bar and 13-cutting line.

The specific embodiment is as follows:

the present utility model will be described in further detail with reference to the following examples, so that the technical means, the creation characteristics, the achievement of the purpose and the effect achieved by the present utility model can be easily understood. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

As shown in fig. 1-4, the hidden plate type bridge expansion device consists of a fixed cassette 1, a seam crossing plate 2, a built-in steel plate 3, a water guide structure 4, a stainless steel sliding plate 5, a positioning steel bar 6, an anchor bolt 7, a threaded sleeve 8 and a stress release groove 9;

one end of the seam crossing plate 2 is provided with comb teeth 10, each comb tooth 10 is inserted into the corresponding fixed cassette 1, and the other end is anchored at the beam end at the other side through an anchor bolt 7;

the fixed cassette 1 is made of stainless steel plate materials and has a thickness of 6mm, and comprises a fixed cassette straight section 1a and a fixed cassette inclined section 1b, wherein the fixed cassette inclined section 1b is embedded at one side beam end according to 15 degrees, and the fixed cassette straight section 1a is flush with a road surface.

The top of the seam crossing plate 2 and the comb teeth 10 are made of flexible composite materials, the built-in steel plate 3 is arranged at the bottom of the seam crossing plate 2, the thickness of the built-in steel plate 3 is 20-30 mm, a gap at the beam end is crossed, the rigidity of the telescopic device can be improved by the built-in steel plate 3, and the seam crossing capability is enhanced; the anchor bolt 7 is a high-strength bolt;

the water guide structure 4 is arranged at the gap of the beam end;

the stainless steel sliding plate 5 is arranged above the beam body at one side of the fixed cassette 1 and below the seam crossing plate 2;

the threaded sleeve 8 is pre-buried in the notch of the beam body, and the anchor bolt 7 is screwed into the threaded sleeve 8 after the telescopic device is installed;

stress relief grooves 9 are provided in the cross-stitch plate 2 between the anchor bolts 7 to reduce stress concentration between the anchor bolts 7 and the cross-stitch plate 2.

The fixed cassette 1 is welded and fixed through the positioning steel bars 6 and the beam body notch embedded steel bars 12.

The comb teeth 13 of the slit plate 2 have certain flexibility, can bend within the range of 0-15 degrees and can slide freely in the fixed cassette 1.

The threaded sleeve 8 is fixedly connected with the notch embedded bars 12 through spot welding.

The construction method comprises the following steps:

step (1): accurately marking the mounting position of the telescopic device at the notch position of the beam end where the telescopic device needs to be mounted, drawing a cutting line 13, and cleaning;

step (2): positioning and fixing the cassette 1:

a, aligning and positioning the matched seam crossing plate 2 and the fixed cassette 1;

b, installing the anchor bolt 7 and the threaded sleeve 8 into the hole of the seam crossing plate 2;

d, determining the length of the positioning steel bar 6 at the bottom of the fixed cassette 1 according to the angle of the inclined section 1b of the fixed cassette, and welding the fixed cassette 1 and the positioning steel bar 6 after determining the length of the positioning steel bar 6;

step (3): the positioning steel bar 6 below the fixed cassette 1 and the notch embedded steel bar 12 are welded and fixed, after the fixed cassette is well fixed, the seam crossing plate 2 and the fixed cassette 1 are aligned again, the flat section 1a of the fixed cassette is ensured to be horizontal and flush with road surfaces on two sides, and the comb teeth 13 of the seam crossing plate 2 can slide freely in the fixed cassette 1.

Step (4): manufacturing templates according to the shape of the telescopic device and the actual size of the notch, and installing the templates firmly to ensure that gaps among the templates are compact;

step (5): after the template is positioned and fixed, the two sides of the top of the water guide structure 4 are glued and pressed on the template, the pasting width of the water guide structure 4 on the inner side of the template is not less than 40mm, and the water guide structure 4 is fixed by iron nails, so that the bonding degree of the water guide structure 4 and the template is controlled to be kept flat, and the cast concrete after bending and insertion is not needed.

Step (6): the elevation and levelness of the seam crossing plate 2 are adjusted, and the top surface of the seam crossing plate 2 is kept flush with the pavement on two sides;

step (7): after the leveling of the telescopic device is finished, the threaded sleeve 8 and the notch embedded bars 12 are welded and fixed;

step (8): adopting fine stone concrete, and synchronously pouring the fine stone concrete on two longitudinal sides, wherein vibration is reinforced in the pouring process, so that the bottom concrete of the telescopic device is compact and smooth;

step (9): coating screw tightening glue on the anchor bolt 7, adjusting the torque force of the electric wrench to the lowest level, and screwing in the anchor bolt 7; and then adjusting the torque force of the electric spanner to a preset value, screwing the anchor bolts 7, and uniformly stressing each anchor bolt 7.

Step (10): the anchor bolt holes are fully sealed by adopting the elastic asphalt crack pouring adhesive 14, and the elastic asphalt crack pouring adhesive 14 is flush with the surface of the telescopic device.

Step (11): the notch concrete 11 should be cured.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the foregoing embodiments, and that the foregoing utility model and description are merely illustrative of the principles of this utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (7)

1. The utility model provides a hidden plate type bridge telescoping device which characterized in that includes:

the fixed cassette comprises a straight section and an inclined section, wherein an included angle between the inclined section and the horizontal direction is 0-15 DEG, and the inclined section is embedded at one side beam end;

and one end of the seam crossing plate is in a comb tooth shape, each comb tooth is inserted into a corresponding fixed cassette, and the other end of the seam crossing plate is anchored at the beam end at the other side through an anchor bolt.

2. The hidden plate type bridge expansion device according to claim 1, wherein a water guide structure is arranged at a gap of the beam end.

3. The hidden plate type bridge expansion device according to claim 1, wherein the top of the seam crossing plate and the comb teeth are of flexible structures, steel plates are arranged in the seam crossing plate and are arranged at the bottom of the seam crossing plate, the steel plates are arranged in the gap between the beam ends, a stainless steel sliding plate is arranged above one side beam end, and the steel plates are in contact with the stainless steel sliding plate.

4. The hidden plate type bridge expansion device according to claim 1, wherein the beam end on the other side is provided with a notch, the threaded sleeve is embedded in the notch of the beam body, and the joint crossing plate is provided with an anchor bolt screwed into the threaded sleeve.

5. The hidden panel bridge expansion device according to claim 4, wherein the threaded sleeve is fixed by spot welding with the embedded bars at the beam end at the other side.

6. The hidden panel bridge expansion apparatus of claim 4, wherein said seam crossing plate is provided with stress relief grooves between the anchor bolts.

7. The hidden plate type bridge expansion device according to claim 1, wherein the fixed cassette is welded and fixed through positioning steel bars and embedded steel bars at one side beam end.