CN206667033U - Bridge bolts the safeguard structure of system - Google Patents

Bridge bolts the safeguard structure of system Download PDF

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Publication number
CN206667033U
CN206667033U CN201621478981.1U CN201621478981U CN206667033U CN 206667033 U CN206667033 U CN 206667033U CN 201621478981 U CN201621478981 U CN 201621478981U CN 206667033 U CN206667033 U CN 206667033U
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China
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safeguard structure
bolt
bridge
coating
rubbing surface
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CN201621478981.1U
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周春侠
李紫跃
倪雅
高海棠
刘国彬
赵青青
邵宁
冷阳光
王金明
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JIANGSU CUMT DAZHENG SURFACE ENGINEERING TECHNOLOGY CO LTD
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JIANGSU CUMT DAZHENG SURFACE ENGINEERING TECHNOLOGY CO LTD
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Abstract

The utility model discloses a kind of safeguard structure of bridge bolt system, including steel matrix rubbing surface safeguard structure, bolt safeguard structure and junction safeguard structure;Steel matrix rubbing surface safeguard structure is in friction surface cover(2)Upper outer lower face surface and rubbing surface core plate(1)Outer surface and friction surface cover(2)Thermal spray metal layer is attached with relative region(3), each thermal spray metal layer(3)On be attached with nonskid coating(4);Bolt safeguard structure is in bolt(5)Outer surface to rub surface cover(2)Vulcanizable rubber sealant is wrapped up at the gap that outer surface connects(6);Junction safeguard structure is in rubbing surface core plate(1)The junction gap that end docking forms(7)And friction surface cover(2)End to rubbing surface core plate(1)Equal filling and vulcanization type rubber sealant at the gap that outer surface connects(6).So as to improve the corrosion resistance of bridge and sealing, bridge life is effectively extended.

Description

Bridge bolts the safeguard structure of system
Technical field
A kind of safeguard structure of bridge bolt system is the utility model is related to, belongs to bridge long-life technical field of anticorrosion.
Background technology
In bridge construction, steel structural bridge is played due to the performance advantage of itself in highway and railroad bridge construction Unique effect, especially itself is light, load resistant power is strong, the manufacturing cycle is short, installation facility, and can realize low-angle scissors crossing The features such as bolted and welded girder Steel Bridge obtained being widely applied very much.As shown in figure 1, existing highway bridge bolt system includes rubbing surface core Plate(1), friction surface cover(2)And high-strength bolt(5), two pieces of rubbing surface core plates(1)End splicing, and top and bottom of junction On be covered each by a friction surface cover(2), and pass through uniform high-strength bolt(5)It is fixed together.Bolted and welded girder Steel Bridge is built, Construction of the connection to whole bridge between Qi Liang and beam plays very important effect.In order to reliably be connected, except making With outside high intensity Special connecting bolt, the antiseptic property and resistant slide ability of girder steel joint face are improved, i.e., how to increase joint face The anti-corrosion time limit and coefficient of friction turn into the key technology for improving rubbing surface connection reliability.
In professional standard TB/T 1527-2004《Railway steel bridge protects application》In, it is proposed that utilize thermal spraying aluminum or inorganic The method of zinc-rich antirust non-skid coating, prepares the Coating of increasing friction of bolted and welded girder Steel Bridge joint face, and specific coating specification is:Using electricity Arc sprays aluminium, and coating layer thickness is 150 ± 50 μm, or uses inorganic zinc-rich antirust non-skid coating, and coating layer thickness is 120 ± 40 μm of paintings The anti-slip coefficient of layer is not less than 0.550, and the exposed aluminium surface of rod member bolt point, inorganic zinc-rich antirust non-skid coating surface are with applying The special epoxy zinc-rich anti-corrosive primer of application is answered by material coating lap-joint.After girder steel assembling, the exposed aluminized coating of bolt point uses epoxy Seal coat carries out sealing of hole, sealing of hole thickness degree no requirement (NR), should coat seal coat to not being absorbed as stopping;Painting should be added corresponding after sealing of hole Matched coating.Application epoxy zinc-rich anti-corrosive primer at bolt point bolt, bolt head, application front bolt answer oil removing, nut and pad It should wash and remove saponification film.
Meng Lixin etc.(Research [J] sufacings of Steel Bridge joint face Coating of increasing friction technology of preparing, August the 33rd in 2004 Rolled up for the 4th phase)The electric arc spraying of spelter coating is first carried out in pretreated substrate surface, the spraying of aluminized coating is then carried out, makes base Material surface is formed using zinc as bottom, and aluminium is the composite coating of face coat.Wherein 40-80 μm of spelter coating thickness, spelter coating spraying The electric arc spraying process parameter constant of the spraying aluminized coating of aluminized coating on spelter coating surface should be carried out in 1h afterwards, coating layer thickness is 80-110μm.Bottom spray zinc can strengthen the corrosion protection to steel substrate, mitigate sprayed-on Al layer because concrete dynamic modulus is easily corroded by aqueous vapor Corrosion is produced in coating bottom and carries out Test of Friction measure the defects of destroy anchoring strength of coating, after process modification, is obtained It is 0.802 to the average arithmetic value of coating coefficient of friction, meets relevant criterion requirement, achieve preferable application effect.
Above-mentioned prior art, positive increasing is all achieved in actual applications and is rubbed effect, but rubbing surface anti-corrosive properties be present The major defect of energy and sealing property deficiency.Single inorganic zinc-rich layer and sprayed-on Al layer, which either spray zinc sprayed-on Al layer, can not all meet The long-lasting protection requirement of Steel Bridge.Zinc sprayed-on Al layer is such as sprayed, as seasonal variations steel part is flexible and bridge floor vibration influence, high-strength bolt Exposed face and rubbing surface edge coating can be exposed in environment.Due to the sealing at high-strength bolt exposed face and rubbing surface edge compared with Difference, corrosive medium can rapidly permeate into coating and be corroded and constantly corrode steel substrate, cause rubbing surface coating adhesion to decline, So as to lose the increasing effect of rubbing.And because existing individually inorganic zinc-rich layer either sprays zinc sprayed-on Al layer with sprayed-on Al layer, its thickness connects Nearly 200 μm, during long service, bridge is in continuous stress variation so that coating layer thickness is acted on not due to creep Disconnected to reduce, so as to cause high-strength bolt to loosen, the operation to bridge produces very big potential safety hazard.
To sum up, existing Coating of increasing friction can not meet Steel Bridge 100 years or even the technology in 120 years life-spans used above will Ask, therefore urgently improve.
Utility model content
For above-mentioned existing technical problem, the utility model offer one kind is simple in construction, anti-slip coefficient is high, corrosion resistance The safeguard structure of excellent, good airproof performance the bridge bolt system of energy, to improve the increasing of rubbing surface mill effect, extends the anti-corrosion of rubbing surface The time limit, the sealing and water proofing property of bolt system are improved, so as to extend the service life of bridge bolt system.
To achieve the above object, the utility model provides a kind of safeguard structure of bridge bolt system, including steel matrix is rubbed Wiping face safeguard structure, bolt safeguard structure and junction safeguard structure.
The steel matrix rubbing surface safeguard structure is upper outer lower face surface and rubbing surface the core plate appearance in friction surface cover Face is attached with thermal spray metal layer on the region relative with friction surface cover, and is attached with each thermal spray metal layer anti-skidding Coating;
The bolt safeguard structure is to be wrapped up at bolt outer surface to the gap to connect with friction surface cover outer surface Vulcanizable rubber sealant;
The junction safeguard structure is in the junction gap that the docking of rubbing surface core plate end forms and friction cover Equal filling and vulcanization type rubber sealant at plate end to the gap to connect with rubbing surface core plate outer surface.
Further, described vulcanizable rubber sealant coating uses silane modified polyether sealant.
Further, described thermal spray metal coating is zinc-copper-titanium alloy metal coating.Further, the thickness of the coating For 80-100 μm.
Further, described nonskid coating is the inorganic zinc-rich nonskid coating with inorganic zinc-rich antirust non-skid coating application. Further, the thickness of the coating is 80-120 μm.
Compared with prior art, the utility model has the following advantages that:
(1)The thermal spraying zinc-copper-titanium alloy material on bridge bolt system steel matrix rubbing surface outer surface, the metal coating Corrosion resisting property it is good, anti-slip coefficient is high, coating porosity is low, can to bridge bolt system steel matrix rubbing surface play protection Effect;In the metal coating surface application inorganic zinc-rich antirust non-skid coating, space caused by metal coating can be closed, enters one Step isolation corrosive medium, and anti-slipping property energy can be increased.
(2)In bridge bolt system bolt exposed surface parcel vulcanizable rubber sealant, avoid in bridge military service process In, corrosive medium and steam enter bolt system friction face steel matrix by the gap of bolt exposed surface, improve bolt system The sealing and water proofing property of system.
(3)Vulcanizable rubber sealant coating is wrapped up and filled using silane modified polyether sealant, and existing Sealant, which is compared, following characteristics:1. the silane modified polyether sealant is one-component, it is not necessary to scene mixing, avoids scene The problems such as project progress caused by confusion is slow, mixing is uneven, micro-bubble;2. the silane modified polyether sealant 100% contains admittedly Amount, has no irritating odor, environmentally friendly;3. the silane modified polyether sealant adhesive force reaches 7.0KN/m, adhesion performance It is more excellent;4. the elongation at break of the silane modified polyether sealant is 450%~700%, its elasticity is substantially better than polysulfide rubber Sealant;5. the density of the silane modified polyether sealant is smaller, bridge load can be under equal conditions reduced, is had well Workability, elastic performance and sealing property, it can effectively ensure construction quality.
(4)In bridge bolt system steel matrix rubbing surface junction filling and vulcanization type rubber sealant, avoid taking in bridge During labour, corrosive medium and steam enter bolt system steel matrix rubbing surface by bolting the gap of system junction, improve The sealing and water proofing property of bolt system.
In summary, the utility model composite construction totally improves the corrosion resistance and sealing of bridge, effectively extends The service life of bridge.
Brief description of the drawings
Fig. 1 is the structural representation of existing highway bridge bolt system;
Fig. 2 is the utility model bridge bolt systematic protection structural representation;
Fig. 3 is the decomposing schematic representation of steel matrix rubbing surface safeguard structure;
In figure:1st, rubbing surface core plate, 2, friction surface cover, 3, thermal spray metal layer, 4, nonskid coating, 5, bolt, 6, sulphur Change type rubber sealant, 7, junction gap.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.
Embodiment 1:The construction process of the safeguard structure application of this bridge bolt system.
1-1, system application steel matrix rubbing surface safeguard structure is bolted to bridge in factory, process is as follows:
1-1-1, steel matrix rubbing surface core plate 1 and friction surface cover 2 are bolted to Steel Bridge using derusting by sandblasting mode first Carry out surface cleaning processing so that the surface cleanness of rubbing surface core plate 1 and friction surface cover 2 after processing reaches Sa3 levels, table Surface roughness reaches Rz60-80 μm;
1-1-2, friction surface cover 2 the upper outer surface of outer lower face surface and rubbing surface core plate 1 with friction the phase of surface cover 2 To region on to adhere to thickness be 80 μm of thermal spray metal layer 3, i.e., spray to form zinc-copper-titanium alloy painting using thermal spraying apparatus Layer, this layer of adhesive force is more than 10MPa, anti-slip coefficient is more than 0.808, and salt-fog resistant time is more than 2000h, more than national related mark Alignment request.
1-1-3, throughout adhere to the nonskid coating 4 that thickness is 80 μm on thermal spray metal layer 3 respectively, i.e., using inorganic richness The application of zinc antirust non-skid coating together or twice inorganic zinc-rich antirust nonskid coating 4.
As shown in figure 3, the steel matrix rubbing surface safeguard structure that above-mentioned operation obtains has excellent adhesive force, good physical Mechanical performance and long-acting, excellent anti-corrosion capability, it is ensured that joint face, which has, stablizes lasting frictional force, realizes that Steel Bridge connects The reliability connect, extend the service life of steel structure bridge.
1-2, carry out anti-corrosion protection to bolt 5 stubborn eventually at the construction field (site), application bolt safeguard structure, process is as follows:
1-2-1, first, rubbing surface core plate 1 and friction surface cover 2 have been carried out above-mentioned metal coating+paint coatings and prevented Shield, after the completion for the treatment of that bolt 5 is twisted eventually, punished in exposed surface to the gap to connect with friction surface cover 2 outer surface of each bolt 5 Not Bao Guo vulcanizable rubber sealant 6, i.e., using silane modified polyether sealant, obtain bolt safeguard structure, as shown in Figure 2. In this way, just avoiding extraneous steam by entering to bolt space in bolt system, bolt system further increasing Sealing and water proofing property.
1-3, application junction safeguard structure, process are as follows in Cheng Qiaohou or after the completion of mating formation:
1-3-1, the junction gap 7 formed and friction surface cover 2 end are being docked in the end of rubbing surface core plate 1 extremely Vulcanizable rubber sealant 6 is smeared at the gap to connect with the outer surface of rubbing surface core plate 1, forms junction safeguard structure, such as Shown in Fig. 3.In this way, the steam for just avoiding the external world passes through steel matrix rubbing surface junction gap 7 and friction surface cover 2 end Enter at portion to the gap to connect with the outer surface of rubbing surface core plate 1 in bolt system, further increasing the close of bolt system Envelope property and water proofing property.
Embodiment 2:The construction process of the safeguard structure application of this bridge bolt system.
2-1, steel matrix rubbing surface safeguard structure is completed in factory, process is different with the step 1-1 in embodiment 1 It is that the thickness of thermal spray metal layer 3 is 90 μm, the thickness that nonskid coating 4 is adhered on thermal spray metal layer 3 is 100 μm.
2-2, at the construction field (site) bolt safeguard structure, process is the same as the step 1-2 in embodiment 1.
2-3, junction safeguard structure of constructing in Cheng Qiaohou or after the completion of mating formation, process is the same as the step 1- in embodiment 1 3。
Embodiment 3:The construction process of the safeguard structure application of this bridge bolt system.
3-1, steel matrix rubbing surface safeguard structure is completed in factory, process is different with the step 1-1 in embodiment 1 It is that the thickness of thermal spray metal layer 3 is 100 μm, the thickness that nonskid coating 4 is adhered on thermal spray metal layer 3 is 120 μm.
3-2, at the construction field (site) bolt safeguard structure, process is the same as the step 1-2 in embodiment 1.
3-3, junction safeguard structure of constructing in Cheng Qiaohou or after the completion of mating formation, process is the same as the step 1- in embodiment 1 3。
Zinc-copper-titanium alloy material, inorganic zinc-rich antirust non-skid coating, vulcanizable rubber needed for above-described embodiment 1-3 is close Device therefor in the raw material such as agent and work progress is sealed, can be directly in market purchasing.Zinc-copper-titanium alloy material used can be adopted DZ-ZCT3 × 100 produced with Jiangsu Zhongkuangdazheng Surface Engineering Techn Co., Ltd., its corrosion resisting property is excellent, anti-slip coefficient It is high, higher with the adhesive force of rubbing surface core plate 1, friction surface cover 2 and paint coatings.Silane modified polyether sealant used can The DZ-MS330 products produced using Jiangsu Zhongkuangdazheng Surface Engineering Techn Co., Ltd., belong to environmentally friendly machine, one-component, Density is small, adhesive force and elastic performance are more excellent.
In a word, the utility model combines thermal spray metal layer with nonskid coating, to rubbing surface core plate 1 and rubbing surface Cover plate 2 has good closed effect, and existing excellent adhesive force acts on cathodic protection, has corrosion-resistant slide-resistant to ensure resistant slide again The effect of coefficient, the erosion of corrosive medium can be effectively prevented, ensure that bolt system joint face has and stablize lasting frictional force, it is real The reliability of existing bridge steel structure connection.Also, at the outer surface of bolt 5, junction gap 7, friction surface cover 2 both ends to friction The outer surface joint of face core plate 1 wrap up respectively with filling and vulcanization type rubber sealant, avoid steam by screwed joint, rub The space that the junction gap 7 of wiping face core plate 1, rubbing surface core plate 1 connect with friction surface cover 2 enters bolt system, improves bolt The sealing water proofing property of welding system.

Claims (6)

1. a kind of safeguard structure of bridge bolt system, it is characterised in that protected including steel matrix rubbing surface safeguard structure, bolt Structure and junction safeguard structure;
The steel matrix rubbing surface safeguard structure is in friction surface cover(2)Upper outer lower face surface and rubbing surface core plate(1)Outside Surface and friction surface cover(2)Thermal spray metal layer is attached with relative region(3), and each thermal spray metal layer(3)On It is attached with nonskid coating(4);
The bolt safeguard structure is in bolt(5)Outer surface to rub surface cover(2)Wrapped at the gap that outer surface connects Wrap up in vulcanizable rubber sealant(6);
The junction safeguard structure is in rubbing surface core plate(1)The junction gap that end docking forms(7)And rubbing surface Cover plate(2)End to rubbing surface core plate(1)Equal filling and vulcanization type rubber sealant at the gap that outer surface connects(6).
A kind of 2. safeguard structure of bridge bolt system according to claim 1, it is characterised in that described vulcanization type rubber Glue sealant(6)Using silane modified polyether sealant.
A kind of 3. safeguard structure of bridge bolt system according to claim 1 or 2, it is characterised in that described thermal jet Matel coated layer(3)For zinc-copper-titanium alloy metal coating.
A kind of 4. safeguard structure of bridge bolt system according to claim 3, it is characterised in that described thermal jet oil gidling Belong to layer(3)Thickness be 80-100 μm.
5. the safeguard structure of a kind of bridge bolt system according to claim 1 or 2, it is characterised in that described is anti-skidding Coating(4)For with the inorganic zinc-rich nonskid coating of inorganic zinc-rich antirust non-skid coating application.
A kind of 6. safeguard structure of bridge bolt system according to claim 5, it is characterised in that described nonskid coating (4)Thickness be 80-120 μm.
CN201621478981.1U 2016-12-30 2016-12-30 Bridge bolts the safeguard structure of system Active CN206667033U (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112129929A (en) * 2020-09-30 2020-12-25 重庆百信实业有限公司 Method for detecting comprehensive performance of track coating

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112129929A (en) * 2020-09-30 2020-12-25 重庆百信实业有限公司 Method for detecting comprehensive performance of track coating
CN112129929B (en) * 2020-09-30 2022-11-15 重庆百信实业有限公司 Method for detecting comprehensive performance of track coating

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