CN106677053B - A kind of girder for steel box girder bridge - Google Patents
A kind of girder for steel box girder bridge Download PDFInfo
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- CN106677053B CN106677053B CN201510751406.8A CN201510751406A CN106677053B CN 106677053 B CN106677053 B CN 106677053B CN 201510751406 A CN201510751406 A CN 201510751406A CN 106677053 B CN106677053 B CN 106677053B
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- girder
- damping unit
- tuning quality
- bottom plate
- steel box
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 56
- 239000010959 steel Substances 0.000 title claims abstract description 56
- 238000013016 damping Methods 0.000 claims abstract description 87
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 52
- 239000000758 substrate Substances 0.000 claims description 30
- 239000000428 dust Substances 0.000 description 14
- 238000010276 construction Methods 0.000 description 5
- 241000276425 Xiphophorus maculatus Species 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000001629 suppression Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
- E01D2101/34—Metal non-ferrous, e.g. aluminium
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The present invention proposes a kind of girder for steel box girder bridge comprising：Tuning quality damping unit and the steel box-girder for accommodating tuning quality damping unit.Tuning quality damping unit is mounted in steel box-girder, for steel box bridge vibration damping.Since steel box-girder accommodates tuning quality damping unit, thus eliminating the need the falling from high altitude risks of tuning quality damping unit and its component.Simultaneously as tuning quality damping unit is mounted in steel box-girder, tuning quality damping unit is not take up the exterior space of steel box bridge, and the more compact structure of steel box bridge is also more attractive.In addition, since tuning quality damping unit is mounted in steel box-girder, tuning quality damping unit applies overturning square smaller to steel box-girder, and steel box bridge entirety stress is more reasonable.
Description
Technical field
The present invention relates to a kind of bridge decreasing vibration techniques, more particularly to a kind of girder for steel box girder bridge.
Background technology
With the development of urban construction, various high-rise, high-rise buildings and thin and tall structure, long span building object increasingly increase
It is more.Meanwhile urban traffic network is more and more flourishing, the bridge structures such as overpass of various large spans have obtained widely answering
With bringing great convenience to the trip of people.But although such tower buildings and bridge strength and stiffness compare appearance
Easily meet design requirement, the frequency of vertical motion is universal all relatively low, holds under the Under Dynamic Loads such as high wind, pedestrian or vehicle
It easily resonates, uncomfortable feeling is brought to pedestrian, while works self structure being caused to damage, or even seriously threaten people
With the safety of vehicle.
How to prevent this kind of large span, low frequency configuration object from destructive resonance occurs as having to set about solving in engineering construction
Realistic problem certainly.It was verified that tuned mass damper (TMD) is a kind of effective vibration control apparatus, its intrinsic frequency
Rate may be adjusted to the natural frequency of vibration close to structure, and the resonance energy of energy absorbing structure reaches and subtracts to reduce the resonance of structure
The purpose of small structural response.
Existing tuned mass damper is typically mounted on the bridge floor of steel box girder bridge or hangs upside down the bridge in steel box girder bridge
Bottom.When tuned mass damper is mounted on bridge floor, then the space of bridge floor can be occupied.Tuning quality mounted on bridge floor damps
Device is generally arranged at the outside of bridge floor, and since the arm of force is longer, bridge needs to carry very big transverse bending moment load.In addition, adjusting
The humorous outdoor installation of mass damper is exposed to the sun by the erosion of wind and rain and sunlight for a long time, and performance declines fast, and effectiveness in vibration suppression subtracts
It is weak.When tuned mass damper is mounted on bridge bottom, since tuned mass damper is hung upside down in bridge bottom and tuning quality damping
Device quality is very big, it is thus evident that tuned mass damper has the risk fallen.To prevent tuned mass damper and its internal member
Part is from falling from high altitude, between the reliability and tuned mass damper and steel box girder bridge of the connection of tuned mass damper inside
Connection reliability requirement it is very high, thus in a disguised form improve production cost.
Invention content
In view of the above technical problems, the present invention proposes a kind of girder for steel box girder bridge comprising：Tuning quality hinders
Buddhist nun's device and the steel box-girder for accommodating the tuning quality damping unit.
In a specific embodiment, the steel box-girder includes bottom plate, is parallel to the top plate of the bottom plate and opposite
Two blocks of webs that both sides are separately connected the bottom plate and the top plate and extending direction is mutually parallel,
The bottom plate, the top plate and two blocks of webs enclose the tuning quality damping unit, the tuning quality
Damping unit is relatively fixed with the bottom plate and connect.
In a specific embodiment, two blocks of webs are symmetrically disposed in the opposite both sides of bottom plate, the tuning
The distance of Tuned mass damper device to two blocks of webs is equal.
In a specific embodiment, girder is provided with multiple tuning quality damping units, multiple tuning qualities
Damping unit is arranged in order along the straight line of the extending direction perpendicular to the web, and the multiple tuning quality damping unit is symmetrical
It is arranged on bottom plate.
In a specific embodiment, the girder further includes being arranged on the bottom plate, being located at the bottom plate and institute
It states between top plate and extending direction rib identical with the extending direction of the web and is arranged multiple on the bottom plate
Pedestal,
The pedestal includes being located at single rib both sides and connecting perpendicular to two pieces of risers of the bottom plate and respectively
It is connected to transverse slat of two pieces of risers close to the end of the top plate,
The tuning quality damping unit includes the pedestal on the transverse slat being mounted on the multiple pedestal.
In a specific embodiment, the tuning quality damping unit further includes mass block and is arranged at described
Between pedestal and the mass block and both ends are respectively connected to the elastic element and damper of the pedestal and the mass block,
Wherein, the quality of the mass block is adjustable.
In a specific embodiment, the pedestal is plate-like, the mass block include it is parallel with the pedestal and
The adjustment block of the substrate and setting being connected respectively with the elastic element and the damper on the substrate, passes through setting
The quantity of the adjustment block adjusts the quality of the mass block.
In a specific embodiment, the side for deviating from the pedestal in the substrate is arranged in the adjustment block.
In a specific embodiment, adjustment block described in polylith stacks gradually and adjacent two pieces of adjustment blocks are mutually solid
Fixed, adjustment block described in polylith is arranged in the center of the substrate.
In a specific embodiment, the substrate is provided with the side coil positioned at the elastic element and to the bottom
The protrusion of seat direction protrusion.
In a specific embodiment, the protrusion in truncated cone-shaped and is arranged in the center of the substrate, the tuning
Tuned mass damper device is provided with equally distributed multiple elastic elements and multiple resistances in the circumferential direction of the protrusion
Buddhist nun's device.
In a specific embodiment, elastic element is helical spring.
In a specific embodiment, tuning quality damping unit further includes extending vertically to pedestal from mass block, inserting
Enter pedestal and with the polished rod of pedestal clearance fit, elastic element is sleeved on polished rod.
In a specific embodiment, the both ends of damper are hinged with mass block and pedestal respectively.
In a specific embodiment, tuning quality damping unit further include be circumferentially positioned at it is dust-proof on substrate side wall
Plate, dust excluding plate form the dust cover for accommodating pedestal with substrate.
Tuning quality damping unit is mounted in steel box-girder, for steel box bridge vibration damping.It is tuned since steel box-girder accommodates
Tuned mass damper device, thus eliminating the need the falling from high altitude risks of tuning quality damping unit and its component.Simultaneously as tuning
Tuned mass damper device is mounted in steel box-girder, and tuning quality damping unit is not take up the exterior space of steel box bridge, steel box bridge
More compact structure, it is also more attractive.In addition, since tuning quality damping unit is mounted in steel box-girder, tuning quality damping dress
It sets and overturning square smaller is applied to steel box-girder, steel box bridge entirety stress is more reasonable.
Description of the drawings
The invention will be described in more detail below based on embodiments and refering to the accompanying drawings.Wherein：
Fig. 1 shows the schematic elevation view of the girder in one embodiment of the present invention；
Fig. 2 shows the schematic diagram of the tuning quality damping unit in Fig. 1；
Fig. 3 shows the upward view of the mass block in Fig. 2.
In the accompanying drawings, identical component uses identical reference numeral.Attached drawing is not drawn according to actual ratio.
Specific implementation mode
The present invention will be further described with reference to the accompanying drawings.
Fig. 1 shows the girder 1 in a kind of embodiment.The girder 1 includes steel box-girder 200 and tuning quality damping unit
100.Tuning quality damping unit 100 is arranged in steel box-girder 200.
Steel box-girder 200 includes top plate 202, bottom plate 201 and two blocks of webs 203.Top plate 202, bottom plate 201 and web 203 are equal
It is plate-like.Top plate 202 is mutually parallel with bottom plate 201.Two blocks of webs 203 are arranged between top plate 202 and bottom plate 201.Web
203 be the platy structure of bar shaped.The opposite both ends of web 203 are separately connected top plate 202 and bottom plate 201.Two blocks of webs 203
Extending direction is mutually parallel.Two blocks of webs 203 are usually symmetricly set on the both sides of bottom plate 201.In this way, web 203, top plate 202
The box structure that an opposite end is not closed out is enclosed with bottom plate 201.Support master of the steel box-girder 200 as steel box girder bridge
Body, for carrying and supporting bridge floor.It is identical compared with other in material quantity since steel box-girder 200 is in cavity structure
Section form can provide bending resistance and the torsional rigidity of bigger, therefore especially suitable for curved bridge and the straight line for bearing larger eccentric load
Bridge.The width of bottom plate 201 is usually less than the width of top plate 202.
Tuning quality damping unit 100 is mounted in steel box-girder 200, for steel box bridge vibration damping.Due to steel box-girder 200
Tuning quality damping unit 100 is accommodated, thus eliminating the need tuning quality damping unit 100 and its falling from high altitude wind of component
Danger.Simultaneously as tuning quality damping unit 100 is mounted in steel box-girder 200, tuning quality damping unit 100 is not take up steel
The exterior space of box bridge, the more compact structure of steel box bridge are also more attractive.In addition, since tuning quality damping unit 100 is pacified
In steel box-girder 200, tuning quality damping unit 100 applies overturning square smaller, steel box bridge entirety stress to steel box-girder 200
More rationally.
Preferably, tuning quality damping unit 100 is relatively fixed with bottom plate 201.Vibrations on this steel box bridge pass through bottom
Plate 201, which is transmitted on tuning quality damping unit 100, carries out vibration damping, good damping result.Especially, tuning quality damping unit
The load that 100 gravity are formed directly acts on bottom plate 201, and bottom plate 201 is typically directly connected to the bridge pier of steel box bridge, steel case
The stress of bridge is more reasonable.
Preferentially, two blocks of webs 203 are symmetrically disposed in the opposite both sides of bottom plate 201.Tuning quality damping unit 100 arrives
The distance between two blocks of webs 203 are equal.Since top plate 202 is usually arranged wider than bottom plate 201, after top plate 202 is by load
Moment of flexure is applied to bottom plate 201 by web 203, the middle part of bottom plate 201 has the trend being folded upward at, and tuning quality damping fills
100 middle parts for being located at bottom plate 201 are set, the load that tuning quality damping unit 100 applies bottom plate 201 can offset part backplane
201 moments of flexure born so that bottom plate 201 is more difficult to be distorted.
Preferably, girder 1 further includes a plurality of rib 300 and multiple pedestals 400.The elongated platy structure of rib 300.
The side of rib 300 is connected on bottom plate 201.The extending direction of rib 300 is consistent with the extending direction of web 203.Rib
300 perpendicular to bottom plate 201.Rib 300 is used to reinforce the lateral structural strength of bottom plate 201.Pedestal 400 is for installing tuning quality
Damping unit 100.Pedestal 400 includes two risers 401 and transverse slat 402.Bottom plate 201 is fixed in one end of riser 401, can be with
By the way of welding.Two risers 401 are located at the both sides of same rib 300.Riser 401 is parallel to rib 300.
Transverse slat 402 is connected to end of two risers 401 close to top.Transverse slat 402 with tuning quality damping unit 100 for being connected
It connects.Transverse slat 402 can be bolted or be welded between the pedestal 10 of tuning quality damping unit 100.Pedestal 400 is to adjust
Humorous Tuned mass damper device 100 provides mounting substrate, and this pedestal 400 is adapted to be equipped with the bottom plate 201 of rib 300 very well,
The structural strength of itself is higher simultaneously, can firmly connect tuning quality damping unit 100 and bottom plate 201.
Fig. 2 shows a kind of tuning quality damping unit 100 in the present embodiment.The tuning quality damping unit 100 wraps
Include pedestal 10, mass block 40, elastic element 60 and damper 50.Pedestal 10 is relatively fixed with bottom plate 201.Pedestal 10 is preferably pacified
On pedestal 400.Elastic element 60 and damper 50 are arranged between pedestal 10 and mass block 40.Elastic element 60 and damping
Device 50 is all connected to pedestal 10 and mass block 40.Mass block 40 is installed upward, and elastic element 60 supports mass block 40.
In the present embodiment, pedestal 10 is in rough platy structure.Pedestal 10 includes flat ontology 11 and setting
Lower elastic element mounting base 12 on ontology 11 and bottombearing damper mounting base 13.Ontology 11 is preferably steel plate.Lower elastic element
Mounting base 12 and bottombearing damper mounting base 13 are arranged in the same plate face of ontology 11.Lower elastic element mounting base 12 is under
Damper mounting stand 13 is respectively used to elastic elements 60 and damper 50 successively.Lower elastic element mounting base 12 and lower damping
The quantity of device mounting base 13 is determined according to the quantity of elastic element 60 and damper 50 respectively.Elastic element 60 and damper 50
Quantity can be it is multiple, such as elastic element 60 be four, damper 50 be two.
Mass block 40 includes substrate 49 and adjustment block 41.Substrate 49 is in rough platy structure.Substrate 49 can be one
Molding structure.In the present embodiment, for convenience of transporting and processing, substrate 49 is by improving quality block 42 and lower mass block 43 splices
It forms.Improve quality block 42 and lower mass block 43 is in rough plate, improve quality block 42 and lower mass block 43 it is stacked together and
It is mutually parallel with the ontology of pedestal 10 11.Lower mass block 43 is located at mass block 40 close to the side of pedestal 10.Lower mass block 43
It is provided with upper elastic element mounting base 45 and upper damper mounting stand 46 on towards the plate face of pedestal 10.Upper elastic element mounting base
45 is equal with the quantity of lower elastic element mounting base 12 and be aligned, and upper damper mounting stand 46 is installed with bottombearing damper
The quantity of seat 13 is equal and corresponds alignment.Adjustment block 41 is arranged on substrate 49, comes by adjusting the quantity of adjustment block 41
Adjust the quality of mass block 40.Adjustment block 41 is preferably fixed to substrate 49 away from the side of pedestal 10 so that it is convenient to increase and decrease adjustment
Block 41.Adjustment block 41 is arranged to slab construction, and adjustment block 41 is covered on substrate 49, can be reduced the center of gravity of mass block 40, be made
Tuning quality damping unit 100 is more stable.It may be used and be welded and fixed between adjustment block 41 and substrate 49.
Elastic element 60 can be bellows, ring spring, helical spring, rubber spring, gas spring, rubber spring
Deng.In the present embodiment, elastic element 60 uses helical spring.Elastic element 60 is arranged between mass block 40 and pedestal 10.
The both ends of elastic element 60 are separately fixed at elastic element mounting base 45 and lower elastic element mounting base on one group be mutually aligned
On 12.Elastic element 60 supports mass block 40.
Damper 50 can be fluid viscous damper.The both ends of damper 50 are separately fixed on one group be mutually aligned
On damper mounting stand 46 and bottombearing damper mounting base 13.Damper 50 is usually disposed as vertical with pedestal 10.Pedestal 10 is installed
In the upper of bottom plate 201, elastic element 60 supports mass block 40.When steel box girder bridge is shaken in the vertical direction, elasticity member
Part 60, which absorbs the vibration energy of part steel box girder bridge and passes it on mass block 40, makes mass block 40 move back and forth.Mass block
40 it is reciprocating when damper 50 consume mass block 40 kinetic energy, thus, it is possible to consume the vibration energy of steel box girder bridge.
Conventionally, as the estimation and tuning quality damping unit to the natural frequency of vibration make or the reasons such as installation
The error of generation, error is larger between the intrinsic frequency and the natural frequency of vibration of structure of existing tuning quality damping unit, tuning
Tuned mass damper device can not play maximum efficiency.
In the present embodiment, the quality of mass block 40 influences the intrinsic frequency of tuning quality damping unit 100, can pass through
At the scene adjust mass block 40 quality come change the intrinsic frequency of tuning quality damping unit 100 make the intrinsic frequency close to
The even equal to natural frequency of vibration of steel box girder bridge realizes the best effectiveness in vibration suppression of tuning quality damping unit 100 with this.Especially
Be, this tuning quality damping unit 100 when being installed on steel box girder bridge, without to the tuning quality damping unit 100 into
Row dismounting adjustment, which can be realized, is adjusted the intrinsic frequency of itself, simplifies the installation tune of tuning quality damping unit 100
Try is rapid, reduces difficulty of construction, reduces the construction time.
Preferably, tuning quality damping unit 100 is provided with polylith adjustment block 41, and polylith adjustment block 41 is sequentially laminated on one
It rises.Adjacent two pieces of adjustment blocks 41 are fixed to each other, such as weld together.Adjustment block 41 is arranged at the center of substrate 49.In this way
It is easy that the center of gravity of mass block 40 is kept to keep 40 stress of mass block more reasonable in the center of substrate 49.
Preferably, substrate 49 is additionally provided with the protrusion 44 protruded to 10 direction of pedestal.The protrusion 44 is arranged in elastic element
60 side coil.In the present embodiment, protrusion 44 is arranged on the lower mass block 43 of substrate 49 and is protruded to 10 direction of pedestal.If
Space between mass block 40 and pedestal 10 can be made full use of by setting this protrusion 44, make the knot of tuning quality damping unit 100
Structure is more compact, occupied space is less.Meanwhile after the protrusion 44 is arranged, the center of gravity of tuning quality damping unit 100 is lower, tuning
Tuned mass damper device 100 is more firm.It is highly preferred that tuning quality damping unit 100 is provided with multiple elastic elements 60 and multiple
Damper 50.As shown in figure 3, protrusion 44 is in truncated cone-shaped and is arranged in the center of substrate 49.Multiple elastic elements 60 and multiple resistances
Buddhist nun's device 50 is looped around around protrusion 44, and is uniformly distributed in the circumferential direction of protrusion 44.100 stress of tuning quality damping unit
More rationally, more firm.
Preferably, tuning quality damping unit 100 is additionally provided with polished rod 70.Polished rod 70 is stretched from mass block 40 to pedestal 10
Go out, one end of which is fixed in upper elastic element mounting base 45.The extending direction of polished rod 70 is vertical direction.Lower elastic element installation
Seat 12 is arranged to tubular, and runs through the ontology 11 of pedestal 10 vertically.Polished rod 70 passes through lower elastic element mounting base 12, and under
12 clearance fit of elastic element mounting base.Pedestal 400 has been lifted pedestal 10 and has formed allowing for the movement of polished rod 70 below pedestal 10
Bit space.Elastic element 60 is helical spring, and elastic element 60 is sleeved on polished rod 70.Mass block 40 is constrained to be only capable of by polished rod 70
It is vertically moving, it prevents mass block 40 from swinging, increases the stability of tuning quality damping unit 100 and vertical
Effectiveness in vibration suppression on direction.Meanwhile helical spring is possible to bend in compression, but since helical spring is sleeved on polished rod 70
On, polished rod 70 limits helical spring and is bent to avoid it.
Preferably, the both ends of damper 50 are hinged with mass block 40 and pedestal 10 respectively.Upper damper mounting stand 46 is under
Damper mounting stand 13 is hinged seat, and the both ends of damper 50 are both provided with hinged seat.The hinged seat at 50 both ends of damper point
It is not linked together by axis pin with upper damper mounting stand 46 and bottombearing damper mounting base 13.Connection can be in certain journey in this way
Damper 50 is protected on degree, extends the service life of damper 50.
Preferably, tuning quality damping unit 100 further includes polylith dust excluding plate (not shown).Dust excluding plate is arranged in substrate 49
Each side wall on, dust excluding plate and substrate 49 form dust cover.Dust cover accommodates pedestal 10.In this way, dust cover is by dust cover
Interior or exterior space separates, contaminated to avoid part of the tuning quality damping unit 100 in dust cover, extends tuning quality damping
The service life of device 100.Dust excluding plate can be polyvinyl chloride panel.It is highly preferred that dust excluding plate is clamped by top board 47 and lower platen 48,
Top board 47, dust excluding plate and lower platen 48 are fixed to base by rivet or screw across top board 47, dust excluding plate and lower platen 48
On plate 49.
In a specific embodiment, girder is provided with multiple tuning quality damping units, multiple tuning quality dampings
Device is arranged in order along the straight line of the extending direction perpendicular to web 203, and multiple tuning quality damping units are about two blocks of webs
Centre position between 203 is symmetrical arranged.Multiple tuning quality damping units are arranged side by side especially suitable for large-scale girder knot
Structure, and 201 stress of bottom plate is evenly.
Although by reference to preferred embodiment, invention has been described, the case where not departing from the scope of the present invention
Under, various improvement can be carried out to it and can replace component therein with equivalent.Especially, as long as there is no structures to rush
Prominent, items technical characteristic mentioned in the various embodiments can be combined in any way.The invention is not limited in texts
Disclosed in specific embodiment, but include all technical solutions fallen within the scope of the appended claims.
Claims (4)
1. a kind of girder for steel box girder bridge, which is characterized in that including：Tuning quality damping unit and the receiving tuning
The steel box-girder of Tuned mass damper device,
The girder further include be arranged on the bottom plate, between the bottom plate and the top plate and extending direction with it is described
The identical rib of extending direction of web and the multiple pedestals being arranged on the bottom plate,
The pedestal includes being located at single rib both sides and perpendicular to two pieces of risers of the bottom plate and being connected to
Two pieces of risers close to the end of the top plate transverse slat,
The tuning quality damping unit includes the pedestal on the transverse slat of the multiple pedestal,
The tuning quality damping unit further includes mass block and is arranged between the pedestal and the mass block and two
End is respectively connected to the elastic element and damper of the pedestal and the mass block, wherein the quality of the mass block can
It adjusts,
The mass block includes substrate that is parallel with the pedestal and being connected respectively with the elastic element and the damper
And the adjustment block of setting on the substrate, the quality of the mass block is adjusted by the way that the quantity of the adjustment block is arranged,
The side for deviating from the pedestal in the substrate is arranged in the adjustment block,
Adjustment block described in polylith stacks gradually and adjacent two pieces of adjustment blocks are fixed to each other, and adjustment block described in polylith is arranged in institute
The center of substrate is stated,
The protrusion that the substrate is provided with the side coil positioned at the elastic element and is protruded to the pedestal direction,
The protrusion is in truncated cone-shaped and is arranged in the center of the substrate, and the tuning quality damping unit is provided with described
Equally distributed multiple elastic elements and multiple dampers in the circumferential direction of protrusion.
2. girder according to claim 1, which is characterized in that the steel box-girder includes bottom plate, is parallel to the bottom plate
Two blocks of webs that top plate and opposite both sides are separately connected the bottom plate and the top plate and that extending direction is mutually parallel,
The bottom plate, the top plate and two blocks of webs enclose the tuning quality damping unit, the tuning quality damping
Device is relatively fixed with the bottom plate and connect.
3. girder according to claim 2, which is characterized in that two blocks of webs are symmetrically disposed in opposite two of bottom plate
The distance of side, tuning quality damping unit to two blocks of webs is equal.
4. girder according to claim 2, which is characterized in that girder is provided with multiple tuning quality damping units,
Multiple tuning quality damping units are arranged in order along the straight line of the extending direction perpendicular to the web, the multiple tuning quality
Damping unit is symmetricly set on bottom plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510751406.8A CN106677053B (en) | 2015-11-06 | 2015-11-06 | A kind of girder for steel box girder bridge |
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| CN201510751406.8A CN106677053B (en) | 2015-11-06 | 2015-11-06 | A kind of girder for steel box girder bridge |
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| CN106677053B true CN106677053B (en) | 2018-09-18 |
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| CN109488723B (en) * | 2018-12-29 | 2024-08-13 | 东莞中子科学中心 | Tuned mass damper of particle accelerator |
| CN112359701B (en) * | 2020-11-02 | 2021-08-20 | 中铁五局集团第一工程有限责任公司 | Steel box girder |
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| CN1715574A (en) * | 2005-06-30 | 2006-01-04 | 安徽工业大学 | Sliding Multi-Dimensional Vibration Isolation Device |
| CN1718929A (en) * | 2005-07-24 | 2006-01-11 | 大连理工大学 | Two-way adjustable tuned mass damper |
| CN101457554A (en) * | 2007-12-14 | 2009-06-17 | 尹学军 | Damping ratio adjustable tuning quality damper |
| CN202954449U (en) * | 2012-11-22 | 2013-05-29 | 南京丹普科技工程有限公司 | Horizontal type tuned mass damper |
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2015
- 2015-11-06 CN CN201510751406.8A patent/CN106677053B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2618823A1 (en) * | 1987-04-28 | 1989-02-03 | Shimizu Construction Co Ltd | METHOD FOR LIMITING STRUCTURE REACTION TO EXTERNAL DISTURBANCES, AND APPARATUS FOR IMPLEMENTING SAID STRUCTURE |
| CN1715574A (en) * | 2005-06-30 | 2006-01-04 | 安徽工业大学 | Sliding Multi-Dimensional Vibration Isolation Device |
| CN1718929A (en) * | 2005-07-24 | 2006-01-11 | 大连理工大学 | Two-way adjustable tuned mass damper |
| CN101457554A (en) * | 2007-12-14 | 2009-06-17 | 尹学军 | Damping ratio adjustable tuning quality damper |
| CN202954449U (en) * | 2012-11-22 | 2013-05-29 | 南京丹普科技工程有限公司 | Horizontal type tuned mass damper |
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| Publication number | Publication date |
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| CN106677053A (en) | 2017-05-17 |
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