CN219430502U - Bridge beam end watertight fittings - Google Patents
Bridge beam end watertight fittings Download PDFInfo
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- CN219430502U CN219430502U CN202320658450.4U CN202320658450U CN219430502U CN 219430502 U CN219430502 U CN 219430502U CN 202320658450 U CN202320658450 U CN 202320658450U CN 219430502 U CN219430502 U CN 219430502U
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- rubber
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- sealing
- waterproof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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Abstract
The utility model discloses a bridge beam end waterproof device, which relates to the technical field of bridge waterproof and comprises the following components: the sealing air bag is used for being fixed in a joint between the two beam ends, and the sealing air bag is abutted with the two beam ends at the two ends so as to seal the joint between the two beam ends; the pressure control device is used for being communicated with the sealing air bag so as to inflate or deflate the sealing air bag to keep constant sealing pressure in the sealing air bag, and the waterproof device is simple in structure, convenient to construct and capable of effectively improving waterproof effect.
Description
Technical Field
The utility model relates to a bridge waterproof technology field especially relates to a bridge beam end watertight fittings.
Background
Concrete bridges in railway construction in China are generally prefabricated according to the design requirements of drawings, and are installed after maintenance. A certain gap is reserved between the beam ends, the bridge beam end waterproof device is arranged at the bridge beam end, is an important part of a bridge, plays a waterproof role on the lower structure between the adjacent beam ends or the beam and the bridge abutment, can adapt to the deformation of the beam body, and the existing bridge beam end waterproof device mainly comprises two types, namely a waterproof device consisting of profile steel and waterproof rubber belts, but the rubber belts are easily scratched or damaged in the installation process, and has great influence on the waterproof performance of the bridge beam end waterproof device in the use process; the other is a polyurethane elastomer waterproof device, when in construction, the end face of the beam is required to be coated with a cross-section agent, the bonding strength of the polyurethane elastomer and the bridge concrete layer is improved, the polyurethane elastomer is mainly bonded with the cross section of the beam for waterproof, but the beam is contracted, the gap between the seams is increased, when the elastomer is in a stretching state, the elastomer is easy to separate from the cross section of the bridge, and the waterproof effect is lost.
Disclosure of Invention
The novel purpose of use is to provide a bridge beam end watertight fittings to solve the problem that above-mentioned prior art exists, simple structure, convenient construction effectively improve the water-proof effects.
In order to achieve the above purpose, the present application provides the following scheme:
use novel waterproof device that provides a bridge beam end, include: the sealing air bag is used for being fixed in a joint between two beam ends, and the sealing air bag is abutted with the two beam ends at two ends so as to seal the joint between the two beam ends; the pressure control device is used for communicating with the sealing air bag to inflate or deflate the sealing air bag so as to keep constant sealing pressure in the sealing air bag.
Preferably, the pressure control device comprises a gas relief valve and an automatic pressure compensating device, the sealed air bag is provided with a gas inlet and a gas outlet, the gas relief valve is connected and communicated with the gas outlet, the gas relief valve is used for discharging gas from the sealed air bag so as to enable the sealing pressure in the sealed air bag exceeding a design value to be reduced to the design value, the automatic pressure compensating device is connected and communicated with the gas inlet, and the automatic pressure compensating device is used for inflating the sealed air bag so as to enable the sealing pressure in the sealed air bag lower than the design value to be increased to the design value.
Preferably, the device further comprises a plurality of hanging rings, each hanging ring is fixedly connected with the top of the sealing air bag, and one end, away from the sealing air bag, of each hanging ring is used for being fixedly connected with the beam end.
Preferably, the sealing airbag comprises a rubber lining layer, a rubber supporting structure layer and a rubber waterproof layer which are sequentially arranged from inside to outside.
Preferably, the thickness of the rubber lining layer is 4-8 mm, the rubber lining layer is formed by taking chlorinated butyl rubber as a matrix, taking carbon black N330 and CF carbon black as reinforcing agents and matching with a functional rubber reinforcing agent Creat-E1 to carry out high-temperature vulcanization.
Preferably, the thickness of the rubber supporting structure layer is 6-15 mm, the rubber supporting structure layer takes natural rubber as a matrix and is matched with a modulus enhancer HMZ and a thermoplastic elastomer resinEA52-40, carbon black N774 as reinforcing agent, and high-temperature vulcanization.
Preferably, the rubber supporting structure layer is internally provided with a ply, and the number of layers of the ply is 1-4.
Preferably, the thickness of the rubber waterproof layer is 4-8 mm, the rubber waterproof layer is formed by taking chlorinated polyethylene as a matrix, dioctyl phthalate or dioctyl sebacate as a plasticizer, carbon black N330 as a reinforcing agent, halloysite nanotubes as a surface reinforcing material and vulcanizing at a high temperature.
Preferably, the sealing airbag further comprises a self-adhesive layer, and the self-adhesive layer is coated on the surface of the rubber waterproof layer so as to bond and fix the sealing airbag and the beam end.
Preferably, the thickness of the self-adhesive layer is 0.8-1.5 mm, and an isolating film is adhered to one side of the self-adhesive layer, which is far away from the rubber waterproof layer.
Compared with the prior art, the novel use has the following technical effects:
the utility model provides a bridge beam end watertight fittings, install the sealing airbag at two beam ends and be in compression state all the time after the beam end butt at both ends to avoid the risk of droing, can seal the seam between two beam ends, ensure the water-proof effects, guarantee the sealing pressure of sealing airbag invariable through setting up the pressure control device that communicates with sealing airbag, under the high temperature weather, inside gas expansion, the internal pressure increases, in order to avoid the pressure too big, pressure control device unloads partial pressure through the blowdown; when the temperature is reduced, the internal air pressure is reduced, so that enough sealing pressure is ensured, the pressure control device inflates the sealing air bag, the pressure in the sealing air bag reaches a set value, the sealing effect of the sealing air bag on the joint between the two ends is ensured, the structure is simple, the construction is convenient, and the waterproof effect is effectively improved.
Drawings
In order to more clearly illustrate the novel embodiments or the technical solutions of the prior art, the drawings required for the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the novel embodiments, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a bridge girder end waterproof device provided by the utility model;
fig. 2 is a cross-sectional view of a sealing airbag in the bridge girder end waterproof device provided by the utility model;
fig. 3 is a schematic structural view of the bridge girder end waterproof device provided by the utility model in use;
in the figure: 1. sealing the air bag; 2. a gas pressure release valve; 3. an automatic pressure compensating device; 4. a hanging ring; 5. a self-adhesive layer; 6. a rubber waterproof layer; 7. a rubber support structure layer; 8. a rubber inner liner; 9. and a beam end.
Detailed Description
The technical solutions of the novel embodiments of the present utility model will be clearly and completely described below with reference to the drawings of the novel embodiments of the present utility model, and it is apparent that the described embodiments are only some of the novel embodiments of the present utility model, not all embodiments. All other embodiments, based on the embodiments in the present use novel, that a person of ordinary skill in the art would obtain without making any inventive effort are within the scope of the present use novel protection.
The novel purpose of use is to provide a bridge beam end watertight fittings to solve the problem that above-mentioned prior art exists, simple structure, convenient construction effectively improve the water-proof effects.
In order to make the above objects, features and advantages of the present utility model more comprehensible, the present utility model is described in further detail below with reference to the accompanying drawings and detailed description.
This novel waterproof device that provides a bridge beam end that uses, as shown in fig. 1 ~ 3, include: the sealing airbag 1 and the pressure control device, wherein the sealing airbag 1 is used for being fixed in a joint between two beam ends 9, and the sealing airbag 1 is abutted with the two beam ends 9 at two ends to seal the joint between the two beam ends 9; the pressure control device is used for being communicated with the sealing air bag 1 to inflate or deflate the sealing air bag 1 to keep constant sealing pressure in the sealing air bag 1, the sealing air bag 1 arranged at the two beam ends 9 is always in a compressed state after being abutted against the beam ends 9 at the two ends, so that the falling risk is avoided, the joint between the two beam ends 9 can be sealed, the waterproof effect is ensured, the sealing pressure of the sealing air bag 1 is ensured to be constant by arranging the pressure control device communicated with the sealing air bag 1, the internal gas is inflated and the internal pressure is increased in high-temperature weather, and in order to avoid overlarge pressure, the pressure control device removes part of pressure through deflation; when the temperature is reduced, the internal air pressure is reduced, in order to ensure enough sealing pressure, the pressure control device inflates the sealing air bag 1, so that the pressure in the sealing air bag 1 reaches a set value, the sealing effect of the sealing air bag 1 on the joint between the two ends is ensured, the structure is simple, the construction is convenient, and the waterproof effect is effectively improved.
In a preferred embodiment, the pressure control device comprises a gas relief valve 2 and an automatic pressure compensating device 3, the sealed airbag 1 is provided with a gas inlet and a gas outlet, the gas relief valve 2 is connected and communicated with the gas outlet, the gas relief valve 2 comprises a device for comparing with the sealed pressure of the sealed airbag 1, the gas relief valve 2 is used for discharging gas of the sealed airbag 1 so as to enable the sealed pressure in the sealed airbag 1 exceeding a design value to be reduced to the design value, the automatic pressure compensating device 3 is connected and communicated with the gas inlet, a device for monitoring the sealed pressure of the sealed airbag 1 is arranged in the automatic pressure compensating device 3 and can compare with the design value according to the monitored sealed pressure, the automatic pressure compensating device 3 is used for inflating the sealed airbag 1 so as to enable the sealed pressure in the sealed airbag 1 lower than the design value to be increased to the design value, the structure is simple, the pressure relief value of the gas relief valve 2 and the pressurizing range of the automatic pressure compensating device 3 are set according to the design value of the sealed pressure in the sealed airbag 1, the internal gas is expanded at high temperature, the internal pressure is increased so as to avoid the excessive pressure, the gas relief valve 2 is opened and partial pressure is discharged; when the air temperature is reduced, the internal air pressure is reduced, and the automatic pressure compensating device 3 starts to work so as to ensure enough sealing pressure and enable the pressure in the sealing air bag 1 to reach a set value.
In a preferred embodiment, bridge beam end watertight fittings still includes a plurality of rings 4, and each rings 4 is fixed with the top of sealed gasbag 1, and rings 4 are kept away from sealed gasbag 1's one end and are used for with beam end 9 fixed connection, and the beam end at both ends all has rings to be connected, simple structure, conveniently carries out handling installation to sealed gasbag 1 to through fixing rings 4 and beam end 9, can be further guarantee with sealed gasbag 1 fixed the seam crossing between two beam ends 9.
In a preferred embodiment, the sealed airbag 1 comprises a rubber lining layer 8, a rubber supporting structure layer 7 and a rubber waterproof layer 6 which are sequentially arranged from inside to outside, the rubber lining layer 8 can ensure the air tightness of the sealed airbag 1, the rubber supporting structure layer 7 can effectively control the deformation of the airbag under the action of air pressure, and the rubber waterproof layer 6 can effectively provide a waterproof function for the sealed airbag 1.
In a preferred embodiment, the thickness of the rubber inner liner 8 is 4-8 mm, the rubber inner liner 8 is formed by taking chlorinated butyl rubber as a matrix, taking carbon black N330 and CF carbon black as reinforcing agents and matching with a functional rubber reinforcing agent Creat-E1 through high-temperature vulcanization, the chlorinated butyl rubber has good air tightness, and the air tightness of the inner liner can be further improved after the CF carbon black and the functional rubber reinforcing agent Creat-E1 are filled and reinforced, so that the overflow of internal gas is effectively blocked, and the internal air pressure is kept stable.
In a preferred embodiment, the thickness of the rubber support structure layer 7 is 6-15 mm, the rubber support structure layer 7 is based on natural rubber, and the modulus enhancer HMZ and the thermoplastic elastomer resin are combinedEA52-40, which is formed by high temperature vulcanization with carbon black N774 as a reinforcing agent, and a modulus reinforcing agent HMZ and thermoplastic elastomer resin in the rubber support structure layer 7>The EA52-40 can effectively improve the tensile modulus and the stretching strength of the natural rubber, and the reinforcing agent selected in the embodiment is high stretching carbon black N774, so that the stretching strength of the rubber material can be further improved, and the deformation of the air bag under the action of air pressure can be effectively controlled.
In a preferred embodiment, the rubber support structure layer 7 is internally provided with plies, the number of plies being 1-4.
In a preferred embodiment, the thickness of the rubber waterproof layer 6 is 4-8 mm, the rubber waterproof layer 6 uses chlorinated polyethylene as a matrix, dioctyl phthalate or dioctyl sebacate as a plasticizer, carbon black N330 as a reinforcing agent, halloysite nanotubes as a surface reinforcing material, and is vulcanized at a high temperature, the rubber waterproof layer 6 uses chlorinated polyethylene with excellent ageing resistance as the matrix, and dioctyl phthalate (DOP) or dioctyl sebacate (DOS) as the plasticizer, so that the cold resistance of the chlorinated polyethylene can be effectively improved, the chlorinated polyethylene has good mechanical properties after being reinforced by the carbon black N330, the surface properties of the halloysite nanotubes can be effectively improved after being filled, and the bonding strength of the halloysite nanotubes and the self-adhesive layer 5 can be enhanced.
In a preferred embodiment, the sealing airbag 1 further comprises a self-adhesive layer 5, wherein the self-adhesive layer 5 is coated on the surface of the rubber waterproof layer 6 to bond and fix the sealing airbag 1 with the beam ends 9, and the sealing airbag is simple in structure and convenient to operate, and further the self-adhesive layer 5 is bonded and fixed with the beam ends 9, so that the sealing airbag 1 is fixed at the joint between the two beam ends 9.
In a preferred embodiment, the thickness of the self-adhesive layer 5 is 0.8-1.5 mm, and the isolating film is stuck on one side of the self-adhesive layer 5 far away from the rubber waterproof layer 6, so that the structure is simple, the use is convenient, and the isolating film can be torn off before the use.
Specific examples are applied to the novel use to illustrate the novel use principle and implementation mode, and the description of the examples is only used for helping to understand the novel use method and core ideas thereof; also, those skilled in the art will appreciate that the conception upon which this disclosure is based may readily be utilized as a basis for the designing of other structures for carrying out the several purposes of the present utility model. In summary, the present description should not be construed as limiting the novel use of the present utility model.
Claims (10)
1. A bridge beam end watertight fittings, its characterized in that: comprising the following steps:
the sealing air bag is used for being fixed in a joint between two beam ends and is abutted with the two beam ends at two ends so as to seal the joint between the two beam ends;
and the pressure control device is used for communicating with the sealing air bag so as to inflate or deflate the sealing air bag to keep constant sealing pressure in the sealing air bag.
2. The bridge girder end waterproof device according to claim 1, wherein: the pressure control device comprises a gas pressure release valve and an automatic pressure supplementing device, the gas pressure release valve is provided with a gas inlet and a gas outlet, the gas pressure release valve is connected and communicated with the gas outlet, the gas pressure release valve is used for releasing gas of the sealed airbag so that the sealing pressure in the sealed airbag exceeding a design value is reduced to the design value, the automatic pressure supplementing device is connected and communicated with the gas inlet, and the automatic pressure supplementing device is used for inflating the sealed airbag so that the sealing pressure in the sealed airbag lower than the design value is increased to the design value.
3. The bridge girder end waterproof device according to claim 1, wherein: the sealing device further comprises a plurality of hanging rings, each hanging ring is fixedly connected with the top of the sealing air bag, and one end, away from the sealing air bag, of each hanging ring is used for being fixedly connected with the beam end.
4. The bridge girder end waterproof device according to claim 1, wherein: the sealing airbag comprises a rubber lining layer, a rubber supporting structure layer and a rubber waterproof layer which are sequentially arranged from inside to outside.
5. The bridge girder end waterproof device according to claim 4, wherein: the thickness of the rubber lining layer is 4-8 mm, the rubber lining layer is formed by taking chlorinated butyl rubber as a matrix, taking carbon black N330 and CF carbon black as reinforcing agents and matching with a functional rubber reinforcing agent Creat-E1 to be vulcanized at a high temperature.
6. The bridge girder end waterproof device according to claim 5, wherein: the thickness of the rubber supporting structure layer is 6-15 mm,the rubber supporting structure layer takes natural rubber as a matrix and is matched with a modulus enhancer HMZ and thermoplastic elastomer resinEA52-40, carbon black N774 as reinforcing agent, and high-temperature vulcanization.
7. The bridge girder end waterproof device according to claim 6, wherein: the inner part of the rubber supporting structure layer is provided with a ply layer, and the number of the ply layer is 1-4.
8. The bridge girder end waterproof device according to claim 7, wherein: the thickness of the rubber waterproof layer is 4-8 mm, the rubber waterproof layer is formed by taking chlorinated polyethylene as a matrix, dioctyl phthalate or dioctyl sebacate as a plasticizer, carbon black N330 as a reinforcing agent, halloysite nanotubes as a surface reinforcing material and vulcanizing at high temperature.
9. The bridge girder end waterproof device according to claim 8, wherein: the sealing air bag further comprises a self-adhesive layer, and the self-adhesive layer is coated on the surface of the rubber waterproof layer so as to bond and fix the sealing air bag and the beam end.
10. The bridge girder end waterproof device according to claim 9, wherein: the thickness of the self-adhesive layer is 0.8-1.5 mm, and an isolating film is adhered to one side of the self-adhesive layer, which is far away from the rubber waterproof layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320658450.4U CN219430502U (en) | 2023-03-30 | 2023-03-30 | Bridge beam end watertight fittings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320658450.4U CN219430502U (en) | 2023-03-30 | 2023-03-30 | Bridge beam end watertight fittings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219430502U true CN219430502U (en) | 2023-07-28 |
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ID=87344539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320658450.4U Active CN219430502U (en) | 2023-03-30 | 2023-03-30 | Bridge beam end watertight fittings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219430502U (en) |
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2023
- 2023-03-30 CN CN202320658450.4U patent/CN219430502U/en active Active
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