CN104032673A - Laminated rubber support reinforced by combining fine high-strength steel wire meshes and steel fibers - Google Patents
Laminated rubber support reinforced by combining fine high-strength steel wire meshes and steel fibers Download PDFInfo
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- CN104032673A CN104032673A CN201410268010.3A CN201410268010A CN104032673A CN 104032673 A CN104032673 A CN 104032673A CN 201410268010 A CN201410268010 A CN 201410268010A CN 104032673 A CN104032673 A CN 104032673A
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Abstract
The invention relates to a laminated rubber support reinforced by combining fine high-strength steel wire meshes with steel fibers. The laminated rubber support consists of rubber bodies, fine high-strength steel wire meshes, outer-layer protecting rubber and steel fibers, wherein the fine high-strength steel wire meshes are thick meshes woven by high-strength steel wires, and the fine high-strength steel wire meshes are closely distributed in the rubber bodies layer by layer to restrain the side deformation of the rubber bodies, so that the support has rigidity and load-bearing capacity required by normal use; steel fiber materials are distributed in rubber in disorder, so that the mechanical property of the rubber bodies is improved, the connection of the fine high-strength steel wire meshes and composite rubber materials is closer, and the restraining effect is enhanced; favorable deformation capacity of the fine high-strength steel wire meshes and the connection action of the steel fibers ensure that the rubber bodies and the high-strength steel wire meshes can still synergistically work under the condition of extreme deformation, and the problems of adhesive failure and the like cannot occur. Under the action of earthquake, the laminated rubber support allows larger shearing deformation until upper and lower surfaces completely break away from a contact surface to present an overturning state and even generate horizontal scrolling, the earthquake force of an upper structure is prevented from being transmitted to a lower structure, the effect of earthquake insulation is exerted, and the safety of a bridge structure is ensured.
Description
Technical field
The invention belongs to bridge engineering, earthquake engineering technical field, be specifically related to a kind of new-type compounded rubber bearing: be particularly related to the laminated rubber bases that a kind of fine and closely woven high-strength steel mesh is put more energy in conjunction with steel fibre.
Background technology
At present in the highway bridge construction of China, laminated rubber bearing, laminated rubber bases etc. are progressively widely used, become the main flow of domestic and abroad bridge bearing, and shock absorption and insulation rubber support subtracts the important measures of shock insulation as bridge, obtain increasing attention, and obtained great development.For the non-bearing of putting more energy into, due to the Incoercibility of rubber, rubber deformation only has to side expansion, can produce larger stretcher strain, thereby it is aging to produce stress at the rubber at protruding drum place.The rubber bodies inside of tradition laminated rubber bearing is to be mutually alternately combined into by TR thin rubber sheet and steel sheet, the lateral expansion of constraint rubber, but board-like bearing is because layer steel plate thickness of putting more energy into is larger, shared height of support large percentage, in the time suffering rarely occurred earthquake, its shear strain ability is limited, is cut up or lose its due effect because board-like bearing can not roll.Also there is the shortcomings such as height of support is higher, and weight is heavier in board-like bearing simultaneously.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, provide one to there is constraint rubber deformation, possess higher vertical bearing capacity, meet normal usage function, and can under earthquake or great percussion, be out of shape, rotate by bearing, reduce the light-duty Novel rubber support of superstructure seismic forces on substructure impact.
For reaching above object, the present invention breaks original neoprene bearing mentality of designing, adopt following solution: be embedded in the lateral deformation of rubber bodies internal constraint rubber with the fine and closely woven high-strength steel mesh of multilayer, the necessary vertical rigidity of neoprene bearing and supporting capacity are provided, high-strength steel mesh constraint system connects each layer of rubber mutually, and bearing rubber bodies effective layer thickness ratio increases obviously.The short steel fibre that mixes random distribution in rubber bodies forms a kind of novel heterogeneous composite rubber material simultaneously, control rubber lateral expansion, improve the mechanical property of rubber, make the connection of fine and closely woven high-strength steel mesh and composite rubber material more tight, strengthen binding effect, far exceed the built-in steel-sheet effect of contraction of traditional neoprene bearing, thereby can greatly increase the axial carrying capacity of bearing, and stress distribution in compounded rubber body is more rational.
Under normal operating condition, bearing has the function identical with traditional laminated rubber bearing.Under compared with small earthquake effect, bearing generation shear strain, consumed energy, simultaneously, rubber bodies can provide the girder that restoring force makes bridge in the mechanism of earthquake, can effectively reset with geological process rear support and substantially not depart from jointly, thereby ensures the traffic capacity after bridge shake; Under severe earthquake action, because fine and closely woven high-strength steel mesh has good deformability, energy and the good collaborative work of compounded rubber body, can there is moderate finite deformation until upper and lower contact surface comes to nothing and then starts rolling in the present invention, beam body can not reduce suddenly because of bearing generation unstable failure, avoid the seismic forces of superstructure to be delivered to substructure, played function of shock insulation, guaranteed bridge structure safe.Meanwhile, because the present invention has isotropic feature, bearing is applied widely, and can play a role to the earthquake motion input from all directions, same bearing performance, and the present invention highly more low weight is lighter, and this just facilitates transport and the installation of bearing.
The laminated rubber bases that the fine and closely woven high-strength steel mesh that the present invention proposes is put more energy in conjunction with steel fibre.Formed by outer layer protection rubber 1, inner rubber 2, fine and closely woven high-strength steel mesh 4 and steel fibre 5, described high-strength fine and closely woven steel screen layer 4 by the high tensile steel wire 3 being mutually vertically staggered by connecting to form frame construction, described inner rubber 2 and high-strength fine and closely woven steel screen layer 4 are alternately arranged and are bonded from top to bottom, in described inner rubber 2, there is the steel fibre 5 of random distribution, described high-strength fine and closely woven steel screen layer 4 forms reliable bonding with inner rubber 2 through sulfuration, alternately arranges that high-strength fine and closely woven steel screen layer 4 and inner rubber 2 peripheries after bonding are enclosed with outer layer protection rubber 1; Under earthquake or great percussion; the outer layer protection rubber 1 that is positioned at bearing upper and lower surface all can disengage face completely; even bearing is the state of toppling; occurred level rolls; beam body can not reduce suddenly because of bearing generation unstable failure; avoid the seismic forces of superstructure to be delivered to substructure, played and subtract function of shock insulation.
In the present invention, described fine and closely woven high-strength steel mesh 4 is worked out by high tensile steel wire 3 colligations, welding or the mode of alternately interting.But form of presentation is not limited to above this kind.
In the present invention, the design parameter such as the layout number of plies, spacing of the shape of described bearing and interior detail density high-strength gauze wire cloth is set according to designing requirement, and the layout number of plies and the arrangement pitch of fine and closely woven high-strength steel mesh are determined on a case-by-case basis.
In the present invention, the steel fiber material that distributed on described bearing rubber inside is random, steel fibre scatters quantity, distribution method and distribution position and can require adjust according to Design and manufacture.
In the present invention, described compounded rubber body be by random distribution the composite rubber material of steel fiber material make.
In the present invention, fine and closely woven high-strength steel mesh is compiled into close net by high tensile steel wire.
The invention has the beneficial effects as follows:
1) the fine and closely woven high-strength steel mesh of the lamination of scheme neoprene bearing inside has retrained the lateral deformation producing when rubber is subject to load effectively, thereby avoids rubber lateral expansion to cause the excessive acceleration of tensile stress ageing of rubber, has improved vertical bearing capacity and vertical rigidity;
2) in scheme neoprene bearing random distribution steel fiber material, improve the mechanical property of rubber bodies, controlled the lateral deformation of rubber bodies; Steel fiber material makes the connection of fine and closely woven high-strength steel mesh and composite rubber material more tight, strengthens binding effect, far exceedes the built-in steel-sheet effect of contraction of traditional neoprene bearing.
3) horizontal rigidity of scheme neoprene bearing is less compared to traditional laminated rubber bearing, in the time that the lateral deformation of scheme bearing is excessive, fine and closely woven high-strength steel mesh can be out of shape with rubber, even can be with rubber bodies one side rolling, and steel fiber material in rubber bodies effectively raises the connection effect of compounded rubber body and fine and closely woven gauze wire cloth, can there is not gauze wire cloth degumming phenomenon in scheme bearing.
4) in scheme bearing, the thickness of fine and closely woven high-strength steel mesh is less than the steel plate of laminated rubber bearing, and compared with the laminated rubber bearing of equal height, the scheme bearing inside number of plies of putting more energy into is more, better to the effect of contraction of rubber.Meanwhile, owing to having saved thick and heavy steel plate, scheme bearing is more light.
5) in scheme bearing, fine and closely woven high-strength steel mesh has very strong deformability, under geological process, allow scheme bearing generation moderate finite deformation until roll, beam body can not reduce suddenly because of bearing generation unstable failure, avoid the seismic forces of superstructure to be delivered to substructure, play function of shock insulation, guaranteed bridge structure safe.
In a word, the present invention is applicable on the building of railway bridge, road bridge, urban viaduct and various suspension frame structures and so on, rises and subtracts function of shock insulation, the shortcoming of having avoided ordinary rubber bearing to exist.
Brief description of the drawings
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is 1/4 sectional view of the present invention.
Fig. 2 is facade view of the present invention.
Fig. 3 is section plan of the present invention.
Number in the figure: 1. outer layer protection rubber, 2. inner rubber, 3. high tensile steel wire, 4. fine and closely woven high-strength steel mesh, 5. steel fibre.
Detailed description of the invention
For the auditor that the makes Patent Office especially public can be expressly understood technical spirit of the present invention and beneficial effect more, applicant elaborates the mode with embodiment below by reference to the accompanying drawings.
Embodiment 1: ask for an interview Fig. 1, Fig. 2, Fig. 3, the fine and closely woven high-strength steel mesh lamination neoprene bearing of putting more energy into is made up of outer layer protection rubber 1, inner rubber 2, fine and closely woven high-strength steel mesh 4 and steel fibre 5.Fine and closely woven high-strength steel mesh 4 is worked out by high tensile steel wire 3, then stacks and puts in mould being added with the rubber of steel fiber material and the fine and closely woven high-strength steel mesh 4 of multilayer, and finally sulfuration forms entirety, and appearance is wrapped with outer layer protection rubber 1.
In the time that scheme bearing bears vertical load, rubber expands laterally, but fine and closely woven high-strength steel mesh 4 and steel fibre 5 are gathered because inner rubber 2 is interior, effectively retrain the lateral expansion of rubber, vertical compression reduces, necessary vertical rigidity and supporting capacity when thereby scheme bearing obtains normal use, while is due to the existence of steel fibre 5, make the connection of fine and closely woven high-strength steel mesh 4 and inner rubber 2 more tight, strengthen binding effect, not only far exceed the built-in steel-sheet effect of contraction of traditional neoprene bearing, and the stress distribution of rubber is more rational; In the time that scheme bearing is subject to horizontal force action, rubber generation shear strain, meets its horizontal movement needs.
Under earthquake or great percussion, the shear strain of scheme bearing is larger, the upper and lower contact surface of scheme bearing edge starts to come to nothing, in the time that distortion further increases, its whole surface all can depart from roof and floor completely and be the state of toppling, even can roll by occurred level, avoided the earthquake of superstructure or percussion to be delivered to substructure, ensure structural safety.Consider that fine and closely woven high-strength steel mesh 4 has very strong deformability, and steel fibre 5 that inner rubber 2 and fine and closely woven high-strength steel mesh 4 are connected is more tight, even if occurring to roll, scheme bearing loses original form, fine and closely woven high-strength steel mesh 4, inner rubber 2 and steel fibre 5 still can collaborative works, do not affect original performance of scheme bearing.
Adopt high tensile steel wire to work out as the fine and closely woven high-strength steel mesh of one of technical essential of the present invention, in fine and closely woven high-strength steel mesh, gauge of wire, material and form of presentation can be adjusted according to designing requirement.
In the present invention, the shape of scheme bearing can be adjusted according to designing requirement.
In the present invention, in scheme bearing, the layout number of plies of gauze wire cloth and spacing can be adjusted according to designing requirement.
In the present invention, distribution method and the position of the steel fiber material in scheme bearing rubber bodies can be adjusted according to designing requirement.
Above-mentioned is not all the restriction to the present invention program to the description of embodiment; therefore; protection scope of the present invention is not only confined to above-described embodiment; any what make according to the present invention design is only pro forma but not substantial various amendment and improvement, within all should being considered as dropping on protection scope of the present invention.
Claims (4)
1. the laminated rubber bases that fine and closely woven high-strength steel mesh is put more energy in conjunction with steel fibre, by outer layer protection rubber (1), inner rubber (2), fine and closely woven high-strength steel mesh (4) and steel fibre (5) form, it is characterized in that described high-strength fine and closely woven steel screen layer (4) by the high tensile steel wire being mutually vertically staggered (3) by connecting to form frame construction, described inner rubber (2) and high-strength fine and closely woven steel screen layer (4) are alternately arranged and are bonded from top to bottom, in described inner rubber (2), there is the steel fibre (5) of random distribution, described high-strength fine and closely woven steel screen layer (4) forms reliable bonding with inner rubber (2) through sulfuration, alternately arrange that high-strength fine and closely woven steel screen layer (4) and inner rubber (2) periphery after bonding are enclosed with outer layer protection rubber (1), under earthquake or great percussion, the outer layer protection rubber (1) that is positioned at bearing upper and lower surface all can disengage face completely, even bearing is the state of toppling, occurred level rolls, beam body can not reduce suddenly because of bearing generation unstable failure, avoid the seismic forces of superstructure to be delivered to substructure, played and subtract function of shock insulation.
2. the laminated rubber bases that fine and closely woven high-strength steel mesh according to claim 1 is put more energy in conjunction with steel fibre, it is characterized in that in described rubber, fine and closely woven high-strength steel mesh is worked out by high tensile steel wire colligation, welding or the mode of alternately interting, but form of presentation is not limited to above this kind.
3. the laminated rubber bases that fine and closely woven high-strength steel mesh is put more energy in conjunction with steel fibre according to claim 1, is characterized in that the shape of described bearing and the design parameter such as the layout number of plies, spacing of interior detail density high-strength gauze wire cloth set according to designing requirement.
4. the laminated rubber bases that fine and closely woven high-strength steel mesh is put more energy in conjunction with steel fibre according to claim 1, is characterized in that the material of described steel fibre, and steel fibre scatters quantity, distribution method and distribution position and can require adjust according to Design and manufacture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410268010.3A CN104032673A (en) | 2014-06-17 | 2014-06-17 | Laminated rubber support reinforced by combining fine high-strength steel wire meshes and steel fibers |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410268010.3A CN104032673A (en) | 2014-06-17 | 2014-06-17 | Laminated rubber support reinforced by combining fine high-strength steel wire meshes and steel fibers |
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| CN104032673A true CN104032673A (en) | 2014-09-10 |
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| CN201410268010.3A Pending CN104032673A (en) | 2014-06-17 | 2014-06-17 | Laminated rubber support reinforced by combining fine high-strength steel wire meshes and steel fibers |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105887666A (en) * | 2016-04-20 | 2016-08-24 | 南昌航空大学 | Easily rotary plate-type rubber support |
| CN108824179A (en) * | 2018-08-21 | 2018-11-16 | 南京林业大学 | A kind of enhanced rubber support of constraint |
| CN111501535A (en) * | 2020-05-21 | 2020-08-07 | 汪友仙 | Assembled road and bridge pier stud structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105887666A (en) * | 2016-04-20 | 2016-08-24 | 南昌航空大学 | Easily rotary plate-type rubber support |
| CN108824179A (en) * | 2018-08-21 | 2018-11-16 | 南京林业大学 | A kind of enhanced rubber support of constraint |
| CN111501535A (en) * | 2020-05-21 | 2020-08-07 | 汪友仙 | Assembled road and bridge pier stud structure |
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Application publication date: 20140910 |
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