CN214939239U - Bridge expansion joint device with rapid repair function - Google Patents
Bridge expansion joint device with rapid repair function Download PDFInfo
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- CN214939239U CN214939239U CN202120839144.1U CN202120839144U CN214939239U CN 214939239 U CN214939239 U CN 214939239U CN 202120839144 U CN202120839144 U CN 202120839144U CN 214939239 U CN214939239 U CN 214939239U
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- expansion joint
- rubber pad
- steel plate
- rapid repair
- bridge expansion
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Abstract
The utility model discloses a possess quick prosthetic bridge expansion joint device for secondary concreting position takes place easily to collapse mouthful, crumples and contracts and the change that leads to consumes long problem in solving current expansion joint mounting structure. The beam expansion joint device comprises expansion joint sub modules which are symmetrically arranged, wherein two expansion joint sub modules are fixed in a secondary concrete construction mode, rubber gasket mounting grooves are formed in each expansion joint sub module by arranging steel plates, and rubber gaskets are fixedly bonded in the grooves through bonding agents. This expansion joint device sets up the rubber pad that can conveniently change through local institutional advancement, has reduced the degree of difficulty that the expansion joint was locally changed during the operation, reduces traditional expansion joint whole change for the change of local rubber pad, pours the secondary and mixes earth wet-type operation, changes into special binder and bonds for traditional 2 to 3 days's construction cycle compression can be accomplished for 2 hours.
Description
Technical Field
The utility model relates to a bridge expansion joint technical field.
Background
The bridge expansion joint device structure comprises anchoring ribs, deformed steel and rubber sealing parts on hardware, wherein the deformed steel is fixed through the combination of the anchoring ribs and concrete, the deformed steel can be customized according to different requirements of the expansion joint, and the deformed steel is used for forming a rigid support at the boundary position of the expansion joint.
The rigid deformed steel and the anchoring rib are connected in a welding mode, namely a welding stress point exists between the rigid deformed steel and the anchoring rib, the deformed steel is located at the boundary position of the expansion joint, the impact force F of a vehicle is applied to the deformed steel in the front face, the deformed steel is in a long strip-shaped structure, the deformed steel at the position has the tendency of local deformation and vibration relative to a secondary pouring concrete block under the repeated rolling of a passing wheel, and the deformation between the deformed steel and the concrete is unequal, so that the damage of the expansion joint is further aggravated.
The damage of the expansion joint at present is shown as local deformation of deformed steel and the opening collapse of secondary pouring concrete in the early stage.
The research shows that the damage phenomenon of the expansion joint is complex and variable, and after comprehensive analysis, the influencing factors comprise the following parts:
1. the bridge expansion joint device is arranged at the weak part of the beam end structure, and directly bears the repeated impact action of the load of the wheel.
2. The bridge expansion joint device is arranged at the weak part of the beam end structure, is exposed in the atmosphere for a long time, is in a severe environment, and has gaps between the concrete pouring area and the joint parts of deformed steel, the concrete pouring area, the asphalt pavement and the like.
3. The bridge expansion joint device is arranged at the weak part of the beam end structure, and the rigidity of the deformed steel is different from the rigidity and toughness of the concrete.
4. The bridge expansion joint installation itself is not properly designed to cause premature failure of the bridge expansion joint installation.
Aiming at the problem, at present, experts and scholars at home and abroad carry out a great deal of research, and the current research direction mainly shows that:
therefore, the utility model discloses from the construction angle starting, provide a technical scheme that can effectively solve the too early destruction of expansion joint. In particular to the damage of secondary concrete pouring at the expansion joint.
And after the expansion joint device is locally damaged, the expansion joint device can be quickly replaced, so that the problems of long replacement period and long traffic sealing period of the conventional expansion joint device are solved, because the expansion joint device is replaced by chiseling secondary concrete for laying again at present, the period of 2 to 3 days is needed for replacing one expansion joint and maintaining, all or part of lanes are needed to be sealed in the period, and the influence on traffic is huge, particularly on expressways.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model provides a bridge expansion joint device with quick repair is used for solving the problem that the replacement time-consuming is long that secondary concreting position takes place easily to collapse mouthful, crumples and leads to in the current expansion joint mounting structure.
The utility model provides a technical scheme that its technical problem adopted does:
the bridge expansion joint device comprises expansion joint sub-modules which are symmetrically arranged, wherein the two expansion joint sub-modules are fixed by secondary concrete construction, and a rubber sealing element is arranged between the two expansion joint sub-modules,
a rubber pad mounting groove is formed in each expansion joint submodule through arranging a steel plate, and a rubber pad is adhered and fixed in the groove through a bonding agent.
Further, a rivet or a fastening screw is arranged between the rubber pad and the steel plate.
Further, the steel plate is a stainless steel plate, and the stainless steel has a flanging.
Further, the steel plate is provided with at least one grouting hole.
Furthermore, the bridge expansion joint device is an embedded type butt joint expansion joint device.
Furthermore, the expansion joint submodule comprises an anchoring rib, deformed steel, a stainless steel plate and a rubber pad, wherein the stainless steel plate is connected with the anchoring rib and the deformed steel in a welding mode.
Furthermore, the bridge expansion joint device is a comb-tooth type expansion joint device.
Further, the expansion joint submodule comprises an anchoring rib, a comb plate, a stainless steel plate and a rubber pad, wherein the stainless steel plate is connected with the anchoring rib and the comb plate in a welding mode.
Further, the adhesive is cold-vulcanization adhesive SK 313.
The utility model has the advantages that:
this expansion joint device sets up the rubber pad that can conveniently change through local institutional advancement, has reduced the degree of difficulty that the expansion joint was locally changed during the operation, reduces traditional expansion joint whole change for the change of local rubber pad, pours the secondary and mixes earth wet-type operation, changes into special binder and bonds for traditional 2 to 3 days's construction cycle compression can be accomplished for 2 hours.
Drawings
Fig. 1 is a view illustrating an installation of a conventional embedded type docking expansion joint device.
Fig. 2 is an installation diagram of the middle embedded type butt joint expansion joint device of the utility model.
Fig. 3 shows the installation of the expansion joint device (single side).
Fig. 4 shows one of the expansion joint installation processes.
Fig. 5 shows a second process of installing the expansion joint.
Fig. 6 is a perspective view of a stainless steel plate.
Fig. 7 is a view (one side) showing installation of the expansion joint device according to the fourth embodiment.
Fig. 8 is a view (one side) showing installation of the expansion joint device in the fifth embodiment.
In the figure:
10 special-shaped steel, 11 rubber inlaid layers,
20, anchoring the ribs, wherein the ribs are fixed on the frame,
30 stainless steel plates, 31 grouting holes, 32 flanging,
40 of a rubber cushion, and a rubber cushion,
50 of the rubber sealing element,
01, a comb plate is arranged on the upper surface of the comb plate,
00 expansion joint.
Detailed Description
Example one
The utility model discloses the people is through the analysis, causes the early premature failure's of expansion joint reason as follows:
the expansion joint is unreasonable in design, the existing expansion joint device is fixed through secondary grooving and secondary concrete pouring, the expansion joint device is fixed through fixing, the fixing mode is rigid fixing, and the problems of opening collapse and collapse are easily caused particularly at the secondary concrete part under the high-speed impact of wheels.
The replacement of the expansion joint is inconvenient. After the expansion joint warp, need change it, the mode of change is for rejecting the secondary concrete, installs new expansion joint device again, and the consuming time of this process is greater than first installation expansion joint, generally needs 2 days to 3 days about can the construction finish, seriously influences the passage of road.
The bridge expansion joint device structure comprises expansion joint sub modules on the left side and the right side and a rubber sealing element 50 arranged between the two sub modules, wherein in the embodiment, the anchoring ribs and concrete are combined to fix deformed steel and are arranged in pairs, and the expansion joint sub modules are arranged on the two sides of the expansion joint 00 and are respectively arranged on the left side and the right side.
In this embodiment, a fixed butt-joint expansion joint device is taken as an example, and the expansion joint device is generally used in conventional bridge engineering with an expansion amount of less than 40 mm. The embedded fixed type butt joint expansion joint device utilizes steel members with different shapes to firmly embed and fix the rubber strips (belts) with different shapes, absorbs the deformation of a beam body through the tension and compression deformation of the rubber strips (belts), and the telescopic body can be in a compressed state.
Referring to fig. 1 to 6, the expansion joint device in this embodiment includes expansion joint sub-modules symmetrically arranged, two expansion joint sub-modules are fixed by secondary concrete construction, and a rubber sealing member is arranged between the two expansion joint sub-modules. The following describes one of the expansion joint sub-modules with reference to the accompanying drawings, and further discloses the whole technology. The expansion joint sub-module is provided with an anchoring rib, deformed steel, a stainless steel plate and a rubber pad, and the technology and the implementation thereof are understood through detailed introduction.
The deformed steel 10 is integrally hot-rolled 16Mn steel, and has the advantages of simple structure, convenience in installation, obvious reliability, comfortableness and durability.
The deformed steel bar 10 has a back side welding anchoring rib 20, which improves the bonding firmness of the part and the concrete.
A horizontal stainless plate 30 is provided at a central position of the deformed steel 10, the stainless plate 30 is horizontally provided to completely cover the secondary concrete pouring area, and a grouting hole 31 formed by laser cutting is provided at the stainless plate 30.
The stainless steel plate 30 has the advantage of being non-rusty, and on the premise of sufficiently removing rust, the stainless steel plate 30 can be replaced by a common steel plate.
In this embodiment, the stainless steel plate is made of a plate having a thickness of 2 mm. Specifically, the stainless steel plate in this embodiment has a flange 32 that is the same thickness as the rubber pad.
The stainless steel plate 30 is made of metal plates, specifically, the flanges are formed by bending through a bending machine after leveling, the inner edges of the flanges are provided, and the rubber pads are tightened in an edge folding mode.
A rubber pad mounting region having a thickness of 20 mm is formed above the stainless steel plate 30, and bonding is performed by a dedicated adhesive in the region.
The rubber pad 40 is fixed in the upper area of the stainless steel plate in a bonding mode, and when the rubber pad 40 is damaged, the rubber pad can be replaced quickly. That is to say, when the highway is newly built, the device is fixed and maintained through concrete, the expansion joint device is fixed, and the device comprises a permanent fixing part and an easily replaceable part, wherein the easily replaceable part is a rubber pad. And through the implementation of the rubber pad, the impact of the wheel to the permanent fixed part is reduced, and the possibility of secondary concrete damage is further reduced.
Further, the rubber pad 40 may be cut from a black cloth-sandwiched abrasion-resistant vulcanized rubber roll, which may be sized by the manufacturer.
Taking a new road as an example, the following is to the technology of the utility model is described in detail through a specific construction process:
in the newly-built highway engineering, the stainless steel plate 30, the deformed steel and the anchoring ribs are welded and fixed together, that is, the welding work is finished in a factory, that is, the stainless steel plate belongs to a part of the expansion joint device.
1) And (5) opening a reserved groove. After the pavement of the asphalt pavement of the highway is finished, the width, the depth and the embedded steel bars of the preformed groove should meet the requirements of design drawings, and the preformed groove is compounded to meet the requirements of installation of the expansion joint.
2) And (6) cleaning the reserved tank. Cleaning up the dirt, dust and other unnecessary sundries at the notch position of the reserved groove, and completely cleaning up the dirt, dust and other unnecessary sundries.
3) And (4) placing. The asphalt pavements at two sides are used as elevations, and hoisting equipment is used for placing the expansion joint in the groove opening, so that the top surface of the expansion joint is the same as the elevation of the pavement.
4) And welding the anchoring ribs in the telescopic seam device with the embedded steel bars on the bridge. After the telescopic device is correctly positioned, the anchoring bars on one side of the telescopic device are connected with the embedded bars of the preformed groove and welded, one anchoring bar can be welded at intervals during welding, and then the anchoring bars on the other side are welded according to the steps. After the telescopic device is confirmed to be fixed, the clamp can be detached, and then the rest unwelded anchoring steel bars and the embedded steel bars are completely welded, so that the telescopic device is reliably anchored.
5) Foam strips are filled between the stainless steel plates and the slots and in gaps between the deformed steel and the slots, so that the condition that the concrete does not leak during grouting is ensured.
6) Grouting and maintaining. Pouring secondary concrete mortar into the cavity below the pouring port of the stainless steel plate, and matching with a vibrating rod to carry out tamping vibration.
7) Cleaning the stainless steel plate, cleaning the stainless steel surface and making it rough using sand blasting or sanding, preferably to a depth of 30 μm. And removing oil stains on the metal surface by using a cleaning agent SK353, brushing a layer of metal primer SK363, and completely drying the metal primer to improve the adhesive force between the metal adhesive surface and the rubber. The rubber surface is fully polished by using a polishing mode, dust is removed by using a clean and dry brush, and surface stains are cleaned by using a cleaning agent SK 353.
8) The bonding of rubber pad adopts cold vulcanization bonding agent SK313, carries out even rubber coating to the side of the bottom surface of rubber pad and both sides to with the quick lock of this rubber pad in foretell installing zone, this cold vulcanization bonding agent SK313 bonds fast, and peel strength is big, can realize the effective connection to rubber pad and corrosion resistant plate, its open time: 10 minutes to 30 minutes.
9) And after the maintenance is carried out for half an hour, the traffic can be released.
In newly-built highway engineering, through the mode of reserving the rubber pad installation area and designing the rubber pad of easily changing, improve the expansion joint, this kind of structural design makes the impact major part of vehicle act on the rubber pad, can convenient and fast's change after the rubber pad damage, has improved the efficiency of changing for the change maintenance time of traditional expansion joint is shortened by 2 days to 3 days and is within 3 hours, great shortening the adverse effect to the traffic.
During the later service period of the highway, after the rubber pad on the upper part is damaged early by the vehicle, the rubber pad is replaced in time, and the concrete replacement method comprises the following steps:
the damaged rubber pad is removed by using a steel shovel, the rubber pad is cleaned and replaced by a new rubber pad, and the replacement work of the rubber pad can be completed within 3 hours generally.
Furthermore, the rubber pad is a cloth-sandwiched rubber plate, and the high-carbon rubber cloth-sandwiched design is adopted, so that the impact resistance and the wear resistance of the rubber pad are improved. In the specific implementation process, the rubber plate with a certain width can be customized by a rubber plate manufacturing factory, and the rubber plate can be cut according to the actual construction requirement to obtain the required size.
Furthermore, the rubber pad and the stainless steel plate can be fastened by fastening screws and fastening rivets, so that the connection strength between the rubber pad and the stainless steel plate is improved.
The improvement further comprises that the edge positions of two sides of the rubber pad are designed to be meshed with the deformed steel, the combined part of the deformed steel is designed to be combined by a clamping groove, and the joint action is carried out in a clamping and bonding mode, so that the connection strength between the rubber pad and the deformed steel is improved.
Example two
The upper surface of the deformed steel is grooved, specifically, the grooves are grooved at intervals of 20 mm, the grooving direction is perpendicular to the length direction of the deformed steel, and the steel-rubber interval arrangement mode is formed in the mode that hard rubber blocks are bonded in the grooves in a cold mode, so that an impact-resistant structure is formed.
The above-mentioned slots are arranged in an oblique manner, i.e. the slot direction is not exactly the same as the lane direction, but exists at a certain angle.
EXAMPLE III
The application of the technology in road reconstruction is as follows:
this embodiment is based on the reconstruction of traditional expansion joint, and specific process is as follows:
1) the existing expansion joint device of make full use of road carries out local concrete with the damaged position at first and chisels, chisels the degree of depth and uses to expose partial embedded steel bar and partial anchor muscle as the best.
2) Arrange the corrosion resistant plate in anchor muscle top to use welded connection's mode to connect, make the corrosion resistant plate fixed in this position, and use the depth gauge to carry out the degree of depth location, guarantee among the welding process that the distance between corrosion resistant plate and the bituminous paving benchmark satisfies the altitude requirement of rubber pad, polish after the welding, make the corrosion resistant plate upper surface be in smooth state basically.
3) Grouting and maintaining. Pouring secondary concrete mortar into the cavity below the pouring port of the stainless steel plate, and matching with a vibrating rod to carry out tamping vibration.
4) Cleaning the stainless steel plate, cleaning the stainless steel surface and making it rough using sand blasting or sanding, preferably to a depth of 30 μm. And removing oil stains on the metal surface by using a cleaning agent SK353, brushing a layer of metal primer SK363, and completely drying the metal primer to improve the adhesive force between the metal adhesive surface and the rubber. The rubber surface is fully polished by using a polishing mode, dust is removed by using a clean and dry brush, and surface stains are cleaned by using a cleaning agent SK 353.
5) The rubber pad is bonded by cold vulcanization adhesive SK313, the cold vulcanization adhesive SK313 has high rapid bonding peeling strength and opening time: 10 minutes to 30 minutes.
Example four
Referring to fig. 7, a comb-shaped expansion joint device is taken as an example for explaining the application of the technology in the installation of the comb-shaped expansion joint.
In this embodiment, the fishback 01 in the fishback expansion joint is located the position at expansion joint, and near this type of expansion joint, the width of rubber pad is obviously less than the width of rubber pad in embodiment one.
EXAMPLE five
Referring to fig. 8, in the present embodiment, the deformed steel is partially modified, and the rigid impact of the wheel on the deformed steel is further reduced by the modification, specifically, a rubber inlay layer 11 is adhered to the surface of the deformed steel, that is, the upper surface of the deformed steel, where the wheel is rolled, to form a protective layer, and the rubber inlay layer has triangular cross sections with different thicknesses, so as to protect and delay the rigid impact of the wheel on the deformed steel.
The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should be able to make various modifications and improvements to the present invention without departing from the spirit of the present invention.
Claims (9)
1. The bridge expansion joint device with rapid repair comprises expansion joint sub-modules which are symmetrically arranged, two expansion joint sub-modules are fixed by secondary concrete construction, and a rubber sealing element is arranged between the two expansion joint sub-modules,
a rubber pad mounting groove is formed in each expansion joint submodule through arranging a steel plate, and a rubber pad is adhered and fixed in the groove through a bonding agent.
2. The apparatus for bridge expansion joint with rapid repair of claim 1, wherein a rivet or a fastening screw is disposed between the rubber pad and the steel plate.
3. The apparatus for bridge expansion joint with rapid repair of claim 2, wherein the steel plate is a stainless steel plate, and the stainless steel plate has a flange.
4. The apparatus for bridge expansion joint with rapid repair of claim 3, wherein said steel plate has at least one grouting hole.
5. The apparatus for rapid repair of a bridge expansion joint according to claim 1, wherein the apparatus for rapid repair of a bridge expansion joint is a fixed butt joint expansion joint apparatus.
6. The bridge expansion joint device with rapid repair function according to claim 5, wherein the sub-module of the expansion joint comprises an anchoring rib, a deformed steel, a stainless steel plate and a rubber pad, wherein the stainless steel plate is welded with the anchoring rib and the deformed steel.
7. The apparatus for bridge expansion joint with rapid repair of claim 1, wherein the apparatus for bridge expansion joint with rapid repair is a comb-type expansion joint apparatus.
8. The bridge expansion joint device with rapid repair of claim 7, wherein the sub-module of the expansion joint comprises an anchoring rib, a comb plate, a stainless steel plate and a rubber pad, wherein the stainless steel plate is welded with the anchoring rib and the comb plate.
9. The bridge expansion joint device with rapid repair of claim 1, wherein the adhesive is cold-vulcanized adhesive SK 313.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120839144.1U CN214939239U (en) | 2021-04-22 | 2021-04-22 | Bridge expansion joint device with rapid repair function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120839144.1U CN214939239U (en) | 2021-04-22 | 2021-04-22 | Bridge expansion joint device with rapid repair function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214939239U true CN214939239U (en) | 2021-11-30 |
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ID=79066134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120839144.1U Active CN214939239U (en) | 2021-04-22 | 2021-04-22 | Bridge expansion joint device with rapid repair function |
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| Country | Link |
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| CN (1) | CN214939239U (en) |
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2021
- 2021-04-22 CN CN202120839144.1U patent/CN214939239U/en active Active
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