CN105714671B - Many bent plate damping absorption devices are overlapped for self-anchored suspension bridge combined type super-elasticity - Google Patents
Many bent plate damping absorption devices are overlapped for self-anchored suspension bridge combined type super-elasticity Download PDFInfo
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- CN105714671B CN105714671B CN201610141493.XA CN201610141493A CN105714671B CN 105714671 B CN105714671 B CN 105714671B CN 201610141493 A CN201610141493 A CN 201610141493A CN 105714671 B CN105714671 B CN 105714671B
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- plate
- many bent
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- suspension bridge
- damper
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/02—Suspension bridges
Abstract
Many bent plate damping absorption devices are overlapped the invention discloses the combined type super-elasticity for self-anchored suspension bridge, the device is that a kind of combined type super-elasticity overlaps many bent plate damping absorption devices, possess certain energy dissipation capacity under earthquake and normal load so that slowing down the destructiveness of bridge, belong to the antidetonation shock attenuation technical field of Structural Engineering.The device is applied on self-anchored suspension bridge, it not only meets bearing capacity and intensity requirement and with certain energy dissipation capacity under the dynamic load functions such as normal wind load, vehicle traveling and brake, and can be filled in larger earthquake and can realize power consumption, can also with external drive increase, device is occurred hyperelastic deformation, effectively improve the overall effective rigidity of self-anchored suspension bridge.So as to solve the problem of Stiffening Girder of Self-Anchored Suspension Bridge bears larger axial compressive force.
Description
Technical field
Energy dissipation capacity can be realized on self-anchored suspension bridge the present invention relates to one kind, girder of suspension bridge rigidity can be improved again
A kind of combined type structure, its wind, driving, brake normal condition in meet requirement for bearing capacity and strength build requirement, on ground
Earthquake centre has enough energy-dissipating properties, and sufficiently large firm of stiffening girder of suspension bridge (girder) can be supplied under rarely occurred earthquake
Degree, slows down the destructiveness of self-anchored suspension bridge, belongs to wind resistance, antidetonation and the cushion technique field of science of bridge building.
Background technology
In recent years, due to earthquake and the frequent generation of other natural calamities, huge threat is also generated to bridge.Earthquake
During generation, because seimic wave propagation is to ground, make abutment occurred level and vertical motion, and cause bridge also occurred level in itself
And vertical motion, so that each position produces inertia force on bridge, deform structure stress, when structure reactance is not enough to resist ground
When shaking load, that is, destroy.Influence of the earthquake to underground soil, makes pier sinking and tilts to produce very large deformation, cause bridge
Produce heavy damage.Sand liquefaction, foundation failure bank slope sliding, also leads to bridge and significantly destroys or even collapse.In addition, having
Although a little bridges can bear earthquake and vibration force in intensity, due to the connection of bridge top and the bottom structure loosely, globality poor is past
Toward that can cause to produce excessive relative displacement between the structure of bridge upper and lower part, so as to cause bridge collapse.Therefore bridge energy dissipating subtracts
Shake technology be increasingly subject in the world pay attention to, by bridge structure set damping dissipation energy device, by damping consumption wind or
Earthquake load inputs most of vibrational energy of bridge structure, so as to reduce the dynamic respons of structure.
Current most of self-anchored suspension bridge, main push-towing rope is directly anchored in beam-ends of putting more energy into, and tension of main cable is directly passed to
Stiff girder, horizontal component is delivered on stiff girder in axle power mode, and stiff girder subjects huge main push-towing rope horizontal force, and this is accomplished by
Beam section of putting more energy into increases, so as to increase the deadweight of beam, main push-towing rope section, and then the increase of main push-towing rope steel using amount is increased in turn, is not only made
Valency is significantly increased, and limits the increase of self-anchored suspension bridge across footpath.Influenceed in addition by main push-towing rope nonlinear interaction, suspension rod
Tensioning it is also more complicated.The drawbacks of this solution for putting more energy into beam section has certain.This exogenous wind, earthquake, vehicle
Traveling and brake also result in obvious dynamic action to stiff girder, and these long-term dynamic responses are caused to a certain degree to suspension bridge
Fatigue, have a strong impact on the security of bridge.
But these problems of the defect and presence for self-anchored suspension bridge, conventional method is normally only using increase resistance
The mode of Buddhist nun's device carries out damping processing, but is limited to the architectural characteristic of self-anchored suspension bridge and installs control, only adds damper not
The problem of fully and effectively solving across footpath and vibration damping, can not solve to bear larger axial direction on Stiffening Girder of Self-Anchored Suspension Bridge
The problem of pressure.
In order to improve such case, the present invention passes through to changing between Stiffening Girder of Self-Anchored Suspension Bridge end and access bridge section
Make, a kind of damper is installed and the modular appliance of many bent plates is overlapped, not only in normal wind load, vehicle traveling and brake etc.
Intensity requirement is met under dynamic response and possesses certain energy dissipation capacity, and the fully realization power consumption in larger earthquake, moreover it is possible to
The rigidity of Stiffening Girder of Self-Anchored Suspension Bridge is improved by overlapping the hyperelastic deformation of many bent plates.So as to solve self-anchored suspension bridge
The problem of stiff girder bears larger axle power, and the realization fully power consumption in earthquake.
The content of the invention
The single increase of larger axial compressive force is born in order to improve Stiffening Girder of Self-Anchored Suspension Bridge to put more energy into this feelings of beam section
Condition, and realize only by single increase damper the situation that bridge fully consumes energy in earthquake, the present invention pass through to from
Anchoring type rope-suspension bridge is put more energy into and transformed between beam-ends and access bridge section, is installed a kind of damper and is overlapped the combined type dress of many bent plates
Put, not only in normal wind load, meet intensity requirement under the dynamic response such as vehicle traveling and brake and possess certain power consumption
Ability, and the fully realization power consumption in larger earthquake, moreover it is possible to hanged by the hyperelastic deformation raising self-anchored type for overlapping many bent plates
The rigidity of cable bridge stiff girder.So as to solve the problem of Stiffening Girder of Self-Anchored Suspension Bridge bears larger axle power, and in earthquake
Realize fully power consumption.
To achieve these goals, this invention takes following technical scheme：
Combined type super-elasticity for self-anchored suspension bridge overlaps many bent plate damping absorption devices, main how curved including overlapping
Plate 1, U bolt 2, shank of bolt 3, nut 4, welding spring 5, damper 6, welding rod member 7, fixation steel plate 8, fixed steel framework
Frame 9；Many bent plates 1 and damper 6 are overlapped respectively by high strength exploitation on fixation steel plate 8 and fixed steel frame 9,
Overlap many bent plates 1, damper 6, fixation steel plate 8, one modular appliance of the fixed formation of steel frame 9.The modular appliance
Installed in putting more energy between beam-ends and access bridge section for self-anchored suspension bridge, many bent plates 1 are overlapped outer in wind, driving, brake and earthquake etc.
Hyperelastic deformation will be produced under portion's power excitation, cushioning effect is played to malformation and effective passive energy dissipation is carried out.
Overlap many bent plates 1 to be formed by stacking for the plate that multiple length differ, each plate is sequentially overlapped, overlap many bent plates 1
Longitudinal section is triangle；There is space between each plate for overlapping many bent plates 1 to ensure to realize nonlinear contact between each plate.
Linked together between each plate for overlapping many bent plates 1 by high-strength bolt, bolt one end is connected to fixation steel plate 8
On, the other end is connected on fixed steel frame 9.
Locked together between each plate end for overlapping many bent plates 1 by U bolt 2, not only can guarantee that plate end it
Between fixation it is more firm, and make between each plate preferably nonlinear contact.
Overlap the longer plate two ends of many bent plates 1 to be welded on fixation steel plate 8 by welding spring 5, make many bent plates 1 of overlapping
Fixation is more firm, fully plays effect that rigidity is improved after its hyperelastic deformation, and have under the excitation of normal external power
Small effectiveness in vibration suppression.
The two ends of damper 6 are connected on fixation steel plate 8 by larger one end of nut 4, and the other end is connected to fixation
On steel frame 9, the both sides of damper 6 are welded on fixed steel frame 9 by welding rod member 7.On the one hand preferably fixation subtracts
Dampener body of shaking part, on the one hand makes damper preferably realize power consumption.
The type of damper 6 can select Viscous fluid damper or friction damper, it is desirable to which resistance is more than axle power
1.5 times of design load and more than, it is ensured that damper can normal kinetic act on it is effectively worked.
The function of the present invention is as follows：
Overlap many bent plates 1 to be fastened with centre bolt, the end of plate is locked by U bolt 2, between plate existing
Gap.If external drive is increased, nonlinear contact is gradually produced between each plate, rigidity increases rapidly, device is occurred superlastic
Property deformation, so as to play cushioning effect to Stiffening Girder of Self-Anchored Suspension Bridge deformation, and effectively improve the entirety of self-anchored suspension bridge
Effective rigidity.
Overlap many plates of bent plate 1 and use spring steel 65Mn or the hot-rolled steel such as spring steel 60Si2Mn or spring steel 50CrVA, this
A little high, elastic good, quenching degree of spring steel intensity are high, also spring steel is good than usual for plasticity and toughness, in shock and vibration or long-term
Hand under stress, with stronger tension, compression strength, elastic limit, high fatigue strength, make many bent plates 1 of overlapping more effectively hair
Wave its effect.
Damper 6 is connected on fixed steel frame 9 with high-strength bolt, by fixation steel plate 8 with overlapping many phases of bent plate 1
Connection, can fully consume energy under external impetus excitation, be interacted with overlapping many bent plates 1, common under outside dynamic action
Realize that oscillation damping and energy dissipating is acted on, give full play of damper 6 and overlap the superposition work(that many bent plates 1 connect into modular appliance
Effect.
Self-anchored type is arranged on after two major part dampers 6 of the present invention and many bent plates 1 of overlapping are connected completely
Between the girder end of suspension bridge and access bridge section, played a role jointly under external impetus excitation, not only bridge is possessed energy-dissipating and shock-absorbing
Ability, the nonlinear contact overlapped between many plates of bent plate 1 brings it about hyperelastic deformation, and rigidity increases sharply immediately, from
And solve the problems, such as that Stiffening Girder of Self-Anchored Suspension Bridge bears larger axial compressive force, reduce the destruction to bridge.
Compared with prior art, advantages of the present invention is as follows：
1) present invention combines damper and many bent plates of overlapping, and common play is made under external impetus excitation
With, the ability for not only making bridge possess energy-dissipating and shock-absorbing can also make rigidity increase sharply by overlapping many bent plate hyperelastic deformations,
Solve the problems, such as that Stiffening Girder of Self-Anchored Suspension Bridge bears larger axle power, without the scheme by beam section of putting more energy into, so as to subtract
The deadweight of girder, reduces the bearing capacity of main push-towing rope, realizes reduction cost, increases the across footpath of bridge.
2) present invention is applied on self-anchored suspension bridge using many bent plates are overlapped, and is existed between many bent plate plates of overlapping certain
Space, by overlapping the nonlinear contact gradually produced between many bent plate plates, rigidity is improved rapidly, device occur superlastic
Property deformation, so as to play cushioning effect to Stiffening Girder of Self-Anchored Suspension Bridge deformation, and effectively improve the entirety of self-anchored suspension bridge
Effective rigidity.
3) end of the longer plate piece in many bent plates of present invention overlapping is welded on fixation steel plate by welding spring, is welded
Spring can not only fix many bent plates of overlapping well, moreover it is possible to play small damping, buffering in wind, driving, brake and earthquake and make
With passing to many bent plates of overlapping by external impetus effect is effective, many bent plates of overlapping is more effectively played its effect.
4) damper of the present invention is connected on fixed steel frame with high-strength bolt, how curved with overlapping by fixation steel plate
Plate is connected, and can fully be consumed energy under external impetus excitation, is interacted with overlapping many bent plates, under outside dynamic action altogether
It is same to realize that oscillation damping and energy dissipating is acted on.
Brief description of the drawings
Fig. 1 is the plan of single damper modular appliance of the invention.
Fig. 2 is the plan of two damper modular appliances of the invention.
Fig. 3 is the stereogram of single damper modular appliance of the invention.
Fig. 4 is the stereogram of two damper modular appliances of the invention.
Fig. 5 is the front view of self-anchored suspension bridge of the present invention.
In figure：1- overlap many bent plates, 2-U shapes bolt, 3- shanks of bolt, 4- nuts, 5- welding spring, 6- dampers,
7- welding rod member, 8- fixation steel plates, 9- fix steel frame, 10- self-anchored suspension bridges, 11- stiffening girder of suspension bridge, 12- access bridges section.
Embodiment
Embodiment 1：
The embodiment that the invention will now be described in detail with reference to the accompanying drawings.
As shown in figure 1, being that combined type super-elasticity of the present invention overlaps many bent plate damping absorption devices, it is many that it mainly includes overlapping
Bent plate 1, U bolt 2, shank of bolt 3, nut 4, welding spring 5, damper 6, welding rod member 7, fixation steel plate 8, fixed steel
Framework 9, self-anchored suspension bridge 10, stiffening girder of suspension bridge 11, access bridge section 12.
The main span span of certain self-anchored suspension bridge is 50m, and end bay is 15m, and two access bridges sections are 10m, suspension bridge always across
Spend for 100m.The width of suspension bridge is that spacing is 5m, the total high 20m of bridge tower between 15m, suspension rod, wherein the high 10m of upper bridge tower, lower bridge
Tower height 10m.The main push-towing rope of self-anchored suspension bridge is directly anchored at the two ends of stiff girder, eliminates setting gravity type earth anchor, breaks through ground
Domain is limited.
Overlap many bent plates 1 to be fastened with centre bolt, end U bolt 2 is locked, overlap many plates of bent plate 1 and use hot rolling
Spring steel 65Mn, 60Si2Mn or 50CrVA, selection anchor bolt (shank of bolt 3, nut 4), the strength grade of U bolt 2 are 10.9
Level.
Then, overlapping many bent plates 1, spring 5 is welded on fixation steel plate 8, the welding rod member 7 of damper 6 is welded with welding
It is connected on fixed steel frame 9, its solder design form is T-shaped connection, and weld seam form is angle welding, welding spring 5 and welding
Rod member 7 uses Q345 steel.
The many bent plates 1 of the overlapping assembled and damper 6 are bolted to fixation steel plate 8 and fixed using stiffness
On steel frame 9, same high-strength bolt also uses strength grade for 10.9 grades, and fixation steel plate 8 and fixed steel frame 9 select steel
For Q345.
Finally, that this combined type super-elasticity first overlapped into many bent plate damping absorption device precast assemblies in factory is good, treat from
After the completion of the construction of anchoring type rope-suspension bridge main part, this modular appliance is transported to job site directly it is anchored at suspension bridge and add
Between strength beam-ends and access bridge section, the engineering time is both saved, construction cost can be reduced again.
It is above the exemplary embodiments of the present invention, but the implementation not limited to this of the present invention.
Claims (5)
1. overlap many bent plate damping absorption devices for self-anchored suspension bridge combined type super-elasticity, it is characterised in that：Device master
To include overlapping many bent plates (1), U bolt (2), shank of bolt (3), nut (4), welding spring (5), damper (6), weldering
Extension bar part (7), fixation steel plate (8), fixed steel frame (9)；Many bent plates (1) are overlapped by high strength exploitation in fixation steel plate
(8) and on fixed steel frame (9), damper (6) is by high strength exploitation in fixation steel plate (8) and fixed steel frame
(9) on；Overlap many bent plates (1), damper (6), fixation steel plate (8), one combined type dress of fixed steel frame (9) formation
Put；The modular appliance is arranged on the putting more energy between beam-ends and access bridge section of self-anchored suspension bridge, overlap many bent plates (1) in wind, OK
Hyperelastic deformation will be produced under car, brake and the excitation of earthquake external impetus, cushioning effect is played to malformation and is carried out effective
Passive energy dissipation；
Overlap many bent plates (1) to be formed by stacking for the plate that multiple length differ, each plate is sequentially overlapped, overlap many bent plates (1)
Longitudinal section is triangle；There is space between each plate for overlapping many bent plates (1) to ensure to realize non-linear connect between each plate
Touch；
Linked together between each plate for overlapping many bent plates (1) by high-strength bolt, bolt one end is connected to fixation steel plate (8)
On, the other end is connected on fixed steel frame (9)；
Overlap and locked together by U bolt (2) between each plate end of many bent plates (1), not only can guarantee that plate end it
Between fixation it is more firm, and make between each plate preferably nonlinear contact；
Overlap the longer plate two ends of many bent plates (1) to be welded on fixation steel plate (8) by welding spring (5), make overlapping how curved
Plate (1) fixation is more firm, fully plays effect that rigidity is improved after its hyperelastic deformation, and under the excitation of normal external power
With small effectiveness in vibration suppression；
Damper (6) two ends are connected on fixation steel plate (8) by larger nut (4) one end, and the other end is connected to solid
Determine on steel frame (9), damper (6) both sides are welded on fixed steel frame (9) by welding rod member (7)；On the one hand more
Good fixation damper main part, on the one hand makes damper preferably realize power consumption；
The type of damper (6) can select Viscous fluid damper or friction damper, it is desirable to which resistance is set more than axle power
1.5 times of evaluation and more than, it is ensured that damper can normal kinetic act on it is effectively worked.
2. the self-anchored suspension bridge combined type super-elasticity according to claim 1 that is used for overlaps many bent plate damping absorption devices,
It is characterized in that：Overlap many bent plates (1) to be fastened with centre bolt, the end of plate is locked by U bolt (2), between plate
There is gap；If external drive is increased, nonlinear contact is gradually produced between each plate, rigidity increases rapidly, sends out device
Raw hyperelastic deformation, so as to play cushioning effect to Stiffening Girder of Self-Anchored Suspension Bridge deformation, and effectively improves self-anchored suspension bridge
Overall effective rigidity.
3. the self-anchored suspension bridge combined type super-elasticity according to claim 1 that is used for overlaps many bent plate damping absorption devices,
It is characterized in that：Many bent plates (1) plate is overlapped using spring steel 65Mn or spring steel 60Si2Mn or spring steel 50CrVA.
4. the self-anchored suspension bridge combined type super-elasticity according to claim 1 that is used for overlaps many bent plate damping absorption devices,
It is characterized in that：Damper (6) is connected on fixed steel frame (9) with high-strength bolt, passes through fixation steel plate (8) and overlapping
Many bent plates (1) are connected, and can fully be consumed energy under external impetus excitation, are interacted with overlapping many bent plates (1), dynamic in outside
Realize that oscillation damping and energy dissipating is acted on jointly under power effect, give full play of damper (6) and many bent plates (1) of overlapping connect into combination
Superposition effect of formula device.
5. the self-anchored suspension bridge combined type super-elasticity according to claim 1 that is used for overlaps many bent plate damping absorption devices,
It is characterized in that：Self-anchored type suspension cable is arranged on after two major part dampers (6) and many bent plates (1) connections of overlapping are complete
Between the girder end of bridge and access bridge section, played a role jointly under external impetus excitation, bridge is possessed the energy of energy-dissipating and shock-absorbing
Power, the nonlinear contact overlapped between many bent plate (1) plates brings it about hyperelastic deformation, and rigidity increases sharply immediately, so that
Solve the problems, such as that Stiffening Girder of Self-Anchored Suspension Bridge bears larger axial compressive force, reduce the destruction to bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610141493.XA CN105714671B (en) | 2016-03-13 | 2016-03-13 | Many bent plate damping absorption devices are overlapped for self-anchored suspension bridge combined type super-elasticity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610141493.XA CN105714671B (en) | 2016-03-13 | 2016-03-13 | Many bent plate damping absorption devices are overlapped for self-anchored suspension bridge combined type super-elasticity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105714671A CN105714671A (en) | 2016-06-29 |
| CN105714671B true CN105714671B (en) | 2017-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610141493.XA Expired - Fee Related CN105714671B (en) | 2016-03-13 | 2016-03-13 | Many bent plate damping absorption devices are overlapped for self-anchored suspension bridge combined type super-elasticity |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3279983B2 (en) * | 1998-06-29 | 2002-04-30 | 株式会社ピー・エス | Construction method of corrugated steel web girder and corrugated steel web girder bridge |
| KR100962677B1 (en) * | 2008-02-27 | 2010-06-15 | 연세대학교 산학협력단 | Assembled bridge for constructing an assembled bridge |
| CN201305821Y (en) * | 2008-10-16 | 2009-09-09 | 靳顷 | Omnidirectional vibration isolating bearing |
| CN101713226B (en) * | 2009-10-23 | 2011-03-09 | 广州大学 | Beam-column joint strengthening arc-shaped lead viscoelastic damper |
| CN201521041U (en) * | 2009-10-23 | 2010-07-07 | 广州大学 | Strengthening arc-shaped viscoelastic damper for beam-column joint |
| CN101942904B (en) * | 2010-08-27 | 2012-07-04 | 北京工业大学 | Steel plate-type tensioning and anchoring system for prestress steel stranded wire reinforced concrete flexural member |
| CN203049785U (en) * | 2012-12-05 | 2013-07-10 | 上海英谷桥梁科技有限公司 | Shock absorption support utilizing shock-absorption control apparatus |
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| CN105714671A (en) | 2016-06-29 |
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Granted publication date: 20171107 Termination date: 20200313 |