CN110130231A - A kind of combination support bridge plane swivel system - Google Patents
A kind of combination support bridge plane swivel system Download PDFInfo
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- CN110130231A CN110130231A CN201910419560.3A CN201910419560A CN110130231A CN 110130231 A CN110130231 A CN 110130231A CN 201910419560 A CN201910419560 A CN 201910419560A CN 110130231 A CN110130231 A CN 110130231A
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- 238000010276 construction Methods 0.000 description 13
- 229910000831 Steel Inorganic materials 0.000 description 3
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- 230000001965 increasing effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 239000003224 coccidiostatic agent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
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- 238000005303 weighing Methods 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
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Classifications
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/08—Methods or apparatus specially adapted for erecting or assembling bridges by rotational movement of the bridge or bridge sections
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Abstract
The present invention provides a kind of combination support bridge plane swivel systems, including lower part suspended deck structure, center flexural pivot, the turntable for being used to support bridge to be turned and for drive turntable rotate power mechanism, lower part suspended deck structure is equipped with the supporting table for being used to support center flexural pivot, center flexural pivot is pivotally mounted to turntable bottom, and center flexural pivot corresponds to the bridge pier bottom center region arrangement of bridge to be turned, the outside of supporting table is equipped with round circular orbit on the suspended deck structure of lower part, and round circular orbit uplink walks to be disposed with the more roller trolleys for support turntable.The invention is using center flexural pivot and the common stress of roller trolley, it treats swivel bridge and forms multi-point support, it overcomes existing single flexural pivot swivel load and all concentrates on the transmitting nearby of center flexural pivot, the problem of causing lower part suspended deck structure discontinuity, and substantially increase the stability against overturning during swivel.
Description
Technical field
The invention belongs to Bridge Designs and technical field of construction, and in particular to a kind of combination support bridge plane swivel system
System.
Background technique
Compared to forms of construction work such as support cast-in-place, Hanging Basket cantilever and fabrication and erections, Bridge Rotation Construction Technique is to existing railway, public affairs
The traffic operation influence time on road is most short, therefore in recent years, bridge plane swivel construction technology in newly-built viaduct Midspan sag and
It is widely applied in the engineerings such as highway.
Currently, bridge plane swivel is all made of single flexural pivot rotor system, however which has some limitations:
(1) single flexural pivot swivel mode is single-point support system, and only center flexural pivot transmits load between upper and lower turntable, works as bridge
When wider, upper and lower turntable stress is more unfavorable, needs to increase the thickness of cushion cap and configures a large amount of presstressed reinforcing steels；And because of load collection
In near the flexural pivot of center, cushion cap lower part pile foundation bears vertical lotus in the part pile foundation that the swivel stage only has close to centre
It carries, stress is extremely uneven, and stake is long to be controlled by the biggish several piles of intermediate stress, causes Pile Foundations Design not economical enough.
(2) it for tall and slender structures such as continuous beam with high-pier and cable-stayed bridges, is affected by wind load, bridge rolls when swivel
Risk is larger, and such as using conventional single flexural pivot swivel, the main frictional force by the upper and lower spherical surface of flexural pivot is resisted horizontal wind excitation and produced
Raw tilting moment, whole resistance to capsizing is lower, needs stability against overturning when other ancillary measures being taken to improve swivel.
Summary of the invention
The purpose of the present invention is provide a kind of using astrosphere for drawbacks described above existing for existing single flexural pivot swivel mode
The combination support bridge plane swivel system of hinge plus roller vehicle cooperative bearing, can at least solve the segmental defect of the prior art.
The technical solution of the present invention is to provide a kind of combination support bridge plane swivel systems, including lower part suspended deck structure
With center flexural pivot, further include be used to support the turntable of bridge to be turned, and for drive turntable rotate power mechanism；It is described
Lower part suspended deck structure is equipped with the supporting table for being used to support center flexural pivot, and the center flexural pivot is pivotally mounted to turntable bottom,
And center flexural pivot corresponds to the bridge pier bottom center region arrangement of bridge to be turned, supporting table is outer on the lower part suspended deck structure
Side is equipped with round circular orbit, and the round circular orbit uplink walks to be disposed with the more roller trolleys for turntable described in support.
Further, the center of circle of the round circular orbit and the center flexural pivot flat circle heart arranged concentric；The turntable
For cylindrical carousel, and its axis passes through the center of circle of the round circular orbit.
Further, more roller trolleys on the round circular orbit are along round circular orbit circumferential direction equidistantly distributed.
Further, the corresponding edge for being located at the turntable of the round circular orbit, and the radius of round circular orbit is less than
The radius of turn of the bridge pier of bridge to be turned.
Further, every roller trolley includes bogie frame, be installed on the walking mechanism of the bogie frame bottom with
And it installs in the support column on the bogie frame table top；Each support column is connected with the turntable bottom and common support institute
Turntable is stated, each support column passes through hydraulic jack respectively and connects with the corresponding bogie frame, passes through the hydraulic jack
Top controls the load that the corresponding support column is undertaken.
Further, the bogie frame of the roller trolley is equipped with the guiding for being oriented to support column elevating movement
Structure.
Further, the guide frame includes in band of column shape and the inner slider that is installed on the bogie frame, Yi Jicheng
Band of column shape and the outer slide plate for being installed on the support column bottom；The outer slide plate coaxial sleeve is set to outside the inner slider and can be opposite
Inner slider slides up and down, and the hydraulic jack is contained in corresponding inner slider.
Further, the hydraulic jack is self-adaptive hydraulic jack.
Further, each support column passes through the more hydraulic jack top supports.
Further, the power mechanism includes hauling rope, and the hauling rope is embedded in the turntable edge in advance, is used for tensioning
Drive turntable rotation.
Compared with prior art, beneficial effects of the present invention:
(1) this combination support bridge plane swivel system provided by the invention using center flexural pivot and roller trolley jointly by
Power, and with center flexural pivot for main force mechanism, roller trolley is to assist the mode of force mechanism to treat swivel bridge to form multiple spot
Support overcomes existing single flexural pivot swivel load and all concentrates on the transmitting nearby of center flexural pivot, causes lower part suspended deck structure stress
Non-uniform problem.
(2) this combination support bridge plane swivel system provided by the invention props up astrosphere hinge by supporting table
Support, and center flexural pivot carries out turntable at separate rotation center to support at center of turntable, while by more roller trolleys
Support, support construction is reliable and stable, and substantially increases the stability against overturning during swivel.
It (3), can be with by setting hydraulic jack in this combination support bridge plane swivel system provided by the invention
The load that adjustment support column is born can exist so that each supporting point uniformly undertakes load during adaptive bridge rotating
Complicated loads change situation, guarantee the synchronization of the jacking position of each support column, effectively improve whole in construction by swing
The resistance to capsizing of structure.
(4) power knot of this combination support bridge plane swivel system provided by the invention using hauling rope as swivel
Structure drives turntable and superstructure rotation, each roller trolley not drive to avoid the accurate control to each roller trolley, turns
It is easy to operate.
The present invention is described in further details below with reference to attached drawing.
Detailed description of the invention
Fig. 1 is the schematic view of facade structure of combination support bridge plane swivel system in the embodiment of the present invention；
Fig. 2 is the side structure schematic view of combination support bridge plane swivel system in the embodiment of the present invention；
Fig. 3 is the top plan view structural schematic diagram of combination support bridge plane swivel system in the embodiment of the present invention；
Fig. 4 is the structural schematic diagram of roller trolley in combination support bridge plane swivel system in the embodiment of the present invention.
Description of symbols: 1, pile foundation；2, cushion cap；3, turntable；4, bridge pier；5, beam body；6, round circular orbit；7, idler wheel is small
Vehicle；8, supporting table；9, center flexural pivot；10, hauling rope；11, walking mechanism；12, bogie frame；13, inner slider；14, outer slide plate；
15, support column；16, hydraulic jack.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " center ", "upper", "lower", "front", "rear", " left side ",
The orientation or positional relationship of the instructions such as " right side ", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on the figure
Orientation or positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention；?
In description of the invention, unless otherwise indicated, the meaning of " plurality " is two or more.
As shown in Figure 1, Figure 2 and Figure 3, a kind of combination support bridge plane swivel system is present embodiments provided, including under
Portion's suspended deck structure, center flexural pivot 9, the turntable 3 for being used to support bridge to be turned and the engine for driving turntable 3 to rotate
Structure；The lower part suspended deck structure includes cushion cap 2 and cushion cap support unit, which can be used what multiple pile foundations 1 supported
Structure, above-mentioned bridge to be turned generally comprise bridge pier 4 and beam body 5 to be turned, bridge pier 4 and the equal support of beam body 5 on turntable 3,
It is rotated together with turntable 3.The cushion cap 2 of the lower part suspended deck structure is equipped with the supporting table 8 for being used to support center flexural pivot 9, support
8 upper surface of platform is equipped with center flexural pivot 9 to the cambered surface groove of cooperation, and 9 top of center flexural pivot is pivotally mounted to 3 bottom of turntable
Portion, 9 lower rotatable of center flexural pivot are installed in the cambered surface groove of supporting table 8, and center flexural pivot 9 corresponds to bridge to be turned
4 bottom center region of bridge pier arrangement, by supporting table 8 bear center flexural pivot 9 transmit load, it is attached to improve center flexural pivot 9
The stability and load support strength of nearly support construction；The outside of supporting table 8 is equipped with circle on the lower part suspended deck structure simultaneously
Circular orbit 6,6 uplink of round circular orbit walk to be disposed with the more roller trolleys 7 for turntable 3 described in support, such shape
It is that main force mechanism is supported at 3 center of turntable at center flexural pivot 9 and the common stress of roller trolley 7, and with center flexural pivot 9, together
When roller trolley 7 be auxiliary force mechanism, far from treating swivel bridge shape to the mode that turntable 3 is supported at rotation center
At multi-point support, overcomes existing single flexural pivot swivel load and all concentrate on the transmitting nearby of center flexural pivot 9, cause lower part cushion cap knot
The problem of structure discontinuity, and substantially increase the stability against overturning during swivel.Wherein, power in the present embodiment
Mechanism includes hauling rope 10, and the hauling rope 10 is embedded in 3 edge of turntable in advance, passes through hauling rope 10 in construction by swing
Tensioning traction turntable 3 rotation and drive the integrally-built rotation in 3 top of turntable, each roller trolley 7 not drive.
As preferred embodiment, the center of circle of the round circular orbit 6 and the 9 concentric cloth in the plane center of circle of center flexural pivot
It sets；The turntable 3 is cylindrical carousel, i.e., horizontal cross-section is circle, then its axis passes through the center of circle of the round circular orbit 6,
More roller trolleys 7 on the round circular orbit 6 are conducive to uniformly bear top along the circumferential equidistantly distributed of round circular orbit 6
Load.
It advanced optimizes, the round circular orbit 6 is the corresponding edge for being located at the turntable 3, i.e. circular ring shape rail together
The position as far as possible far from 3 rotation center of turntable is arranged in road 3, and the radius of round circular orbit 6 is less than the bridge of bridge to be turned
The radius of turn of pier 4, is effectively improved the stress of turntable 3, lower part suspended deck structure, and it is steady to improve the antidumping in construction by swing
It is qualitative.
As an implementation, as shown in figure 4, every roller trolley 7 includes bogie frame 12, it is installed on described
It the walking mechanism 11 of 12 bottom of vehicle frame and installs in the support column 15 on 12 table top of bogie frame；Each support column 15 is
With 3 bottom of turntable be connected and common support described in turntable 3, each support column 15 respectively by hydraulic jack 16 with it is right
The bogie frame 12 answered connects, and controls the load that the corresponding support column 15 is undertaken by the hydraulic jack 16.
Wherein, above-mentioned support column 15 preferably uses concrete filled steel tube pillar, lighter in weight, while structural strength with higher,
Support effect is preferable；Above-mentioned hydraulic jack 16 is preferably self-adaptive hydraulic jack, utilizes self-adaptive hydraulic control system
Top stretch of the hydraulic jack 16 during swivel is controlled, each supporting point may make uniformly to undertake load；Specifically, using certainly
The multiple hydraulic jacks 16 of hydraulic control system coordinated control are adapted to, it is made to have the big weight of jacking, large volume, there is complicated work
Make the ability of the component on surface, synchronous shift can be automatically finished, realizes the functions such as power and Bit andits control, each hydraulic jack 16
On be mounted on pressure sensor and displacement sensor, each pressure sensor and displacement sensor with above-mentioned self-adaptive hydraulic control
System processed is electrically connected, and is able to achieve the measurement of precision positions and power, carries out the feedback of position and power, once each hydraulic jack 16
Between position and power there are asynchronous, error signal will be generated, self-adaptive hydraulic control system is added to after amplifying signal
In command signal, the lifting strength for controlling each hydraulic jack 16 respectively is increased or reduced, and hydraulic jack 16 is made to measure position
It sets and changes with power, until eliminating asynchronous error；Above-mentioned self-adaptive hydraulic jack is the prior art, can be purchased by market
, details are not described herein again for specific structure.By setting hydraulic jack 16, the load that adjustable support column 15 is undertaken,
So that each supporting point uniformly undertakes load, can each support column 15 is shared in adaptive bridge rotating engineering loads change,
The synchronization for guaranteeing the jacking position of each support column 15 simultaneously, effectively improves integrally-built antidumping energy in construction by swing
Power.
It advanced optimizes, the bogie frame 12 of the roller trolley 7 is equipped with for carrying out to 15 elevating movement of support column
The guide frame of guiding guarantees that the support column 15 during top is stretched of hydraulic jack 16 guarantees swivel in moving straight up and down
The stability and reliability of construction.The conventional guidance mode such as guide sleeve and guiding axis cooperation can be used in the guide frame；This reality
Apply in example, as shown in figure 4, the guide frame include in band of column shape and the inner slider 13 that is installed on the bogie frame 12, with
And in band of column shape and it is installed on the outer slide plate 14 of 15 bottom of support column；14 coaxial sleeve of outer slide plate is set to the inner slider
It can slide up and down outside 13 and with respect to inner slider 13, the hydraulic jack 16 is contained in corresponding inner slider 13, the outer slide plate
14 preferably use transition fit mode with inner slider 13, to achieve the effect that avoid the shaking of support column 15 to be preferred.Further,
Each support column 15 is supported by the more hydraulic jacks 16, and each hydraulic jack 16 is contained in above-mentioned interior cunning
In the inner cavity of plate 13, more 16 cooperative bearings of hydraulic jack, cooperatings, the load that the co- controlling support column is undertaken,
Stable structure, reliable operation, fast response time.
Specifically, by taking the rotator construction of the only tower double plane cable stayed bridge of (200+226) m as an example, bridge deck width 32.5m, swivel
3.0 ten thousand tons of weight.When being turned using single flexural pivot, flexural pivot diameter about 4.8m, bridge pier transverse width 22m, turntable lateral dimension are needed
24m, when only supporting by single fulcrum (flexural pivot), top rotary table structure stress is difficult to meet the requirements, and implements under the conditions of three-level wind speed
When swivel, anti-coccidia index 1.03, less than the 1.3 of code requirement.And use center flexural pivot 9 provided by the above embodiment
Supporting bridge Liangping face rotor system is combined in conjunction with the common stress of roller trolley 7, as shown in fig. 1, is arranged 1 in 3 bottom of turntable
Center flexural pivot and 6 supporting points with roller trolley 7, design draft center flexural pivot 9 and bear 2.4 ten thousand tons of loads, and center flexural pivot 9 is flat
Face diameter 4.2m, each support column 15 bear 1000 tons of loads, the force path of upper load are as follows: 4-turntable of bridge pier, 3-center
Flexural pivot 9+ supporting point-2-pile foundation of cushion cap 1.It is computed, rotator construction stage anti-coccidia index has been increased to 14.3, simultaneously
Because load is more dispersed after increasing supporting point, there is larger change to the stress performance of bridge pier 4, turntable 3, cushion cap 2 and pile foundation 1
It is kind.Meanwhile the load that each concrete filled steel tube support column 15 and roller trolley 7 are born can be by self-adaptive hydraulic jack 16
It is controlled automatically at 1000 tons (deviation is less than 2%).
In addition, conventional list flexural pivot swivel scheme has the program of weighing balancing before swivel, to guarantee swivel structure
Center of gravity is overlapped with flexural pivot center, and flexural pivot is in central compression state.Idler wheel is combined using center flexural pivot 9 provided by the above embodiment
The common stress of trolley 7 combines supporting bridge Liangping face rotor system, can more easily realize function of weighing, concrete operation method
Are as follows: the automatic regulation function for first releasing self-adaptive hydraulic jack 16 reads each hydraulic thousand under the premise of guaranteeing 3 level of turntable
Then the counter-force value on jin top 16 keeps each 16 counter-force of hydraulic jack consistent (deviation is less than 1%) by adjusting the counterweight in beam body 5,
Balance swivel state is reached at this time, has then opened the automatic regulation function of jack again, allow each pillar stress to reach and set
Count the numerical value (1000 tons) drafted.
The foregoing examples are only illustrative of the present invention, does not constitute the limitation to protection scope of the present invention, all
It is within being all belonged to the scope of protection of the present invention with the same or similar design of the present invention.
Claims (10)
1. a kind of combination support bridge plane swivel system, including lower part suspended deck structure and center flexural pivot, it is characterised in that: also wrap
Include the turntable for being used to support bridge to be turned, and the power mechanism for driving turntable to rotate；On the lower part suspended deck structure
Equipped with the supporting table for being used to support center flexural pivot, the center flexural pivot is pivotally mounted to turntable bottom, and center flexural pivot is corresponding
Arrange that the outside of supporting table is equipped with circular ring shape rail on the lower part suspended deck structure in the bridge pier bottom center region of bridge to be turned
Road, the round circular orbit uplink walk to be disposed with the more roller trolleys for turntable described in support.
2. combination support bridge plane swivel system as described in claim 1, it is characterised in that: the circle of the round circular orbit
The heart and the center flexural pivot flat circle heart arranged concentric；The turntable is cylindrical carousel, and its axis passes through the circular ring shape
The center of circle of track.
3. combination support bridge plane swivel system as described in claim 1, it is characterised in that: on the round circular orbit
More roller trolleys are along round circular orbit circumferential direction equidistantly distributed.
4. combination support bridge plane swivel system as described in claim 1, it is characterised in that: the round circular orbit is corresponding
Positioned at the edge of the turntable, and the radius of round circular orbit is less than the radius of turn of the bridge pier of bridge to be turned.
5. combination support bridge plane swivel system as described in claim 1, it is characterised in that: every roller trolley packet
Bogie frame is included, the walking mechanism of the bogie frame bottom is installed on and is installed in the support column on the bogie frame table top；Respectively
The support column is connected with the turntable bottom and turntable described in support, each support column pass through hydraulic jack respectively jointly
Top is connected with the corresponding bogie frame, controls the load that the corresponding support column is undertaken by the hydraulic jack.
6. combination support bridge plane swivel system as claimed in claim 5, it is characterised in that: the trolley of the roller trolley
Frame is equipped with the guide frame for being oriented to support column elevating movement.
7. combination support bridge plane swivel system as claimed in claim 6, it is characterised in that: the guide frame includes being in
Band of column shape and the inner slider being installed on the bogie frame, and in band of column shape and it is installed on the outer cunning for supporting column bottom
Plate；The outer slide plate coaxial sleeve is set to outside the inner slider and can slide up and down with respect to inner slider, the hydraulic jack receiving
In in corresponding inner slider.
8. combination support bridge plane swivel system as claimed in claim 5, it is characterised in that: the hydraulic jack is certainly
Adapt to hydraulic jack.
9. the combination support bridge plane swivel system as described in claim 5 or 6 or 7 or 8, it is characterised in that: each described
Support column passes through the more hydraulic jack top supports.
10. combination support bridge plane swivel system as described in claim 1, it is characterised in that: the power mechanism includes
Hauling rope, the hauling rope are embedded in the turntable edge in advance, drive turntable rotation for tensioning.
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| CN201910419560.3A CN110130231A (en) | 2019-05-20 | 2019-05-20 | A kind of combination support bridge plane swivel system |
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| CN201910419560.3A CN110130231A (en) | 2019-05-20 | 2019-05-20 | A kind of combination support bridge plane swivel system |
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Cited By (8)
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|---|---|---|---|---|
| CN110468741A (en) * | 2019-08-19 | 2019-11-19 | 中铁武汉勘察设计研究院有限公司 | A kind of rolling support rotor system and method reducing swivel resistance |
| CN110761187A (en) * | 2019-09-19 | 2020-02-07 | 中铁十局集团第一工程有限公司 | Active control method for bridge horizontal rotation construction |
| CN111366299A (en) * | 2020-03-31 | 2020-07-03 | 中铁大桥科学研究院有限公司 | Method and device for measuring center of gravity of swivel part of swivel bridge |
| CN111945581A (en) * | 2020-07-08 | 2020-11-17 | 中电建路桥集团有限公司 | Construction method of swivel spherical hinge and slideway |
| CN112323646A (en) * | 2020-10-29 | 2021-02-05 | 德州市公路工程总公司 | Construction method and application of horizontal swivel system of rigid frame bridge |
| CN113106877A (en) * | 2021-03-08 | 2021-07-13 | 武汉二航路桥特种工程有限责任公司 | Existing bridge rotation utilization method |
| CN113235457A (en) * | 2021-05-21 | 2021-08-10 | 中铁二十二局集团第一工程有限公司 | Active control device for bridge rotation construction |
| CN113834678A (en) * | 2021-09-23 | 2021-12-24 | 中铁十一局集团第一工程有限公司 | Multipoint support type swivel bridge model test device and test method |
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