CN110080108A - It unites for falling boom support and falling girder system in tunnel - Google Patents
It unites for falling boom support and falling girder system in tunnel Download PDFInfo
- Publication number
- CN110080108A CN110080108A CN201910285183.9A CN201910285183A CN110080108A CN 110080108 A CN110080108 A CN 110080108A CN 201910285183 A CN201910285183 A CN 201910285183A CN 110080108 A CN110080108 A CN 110080108A
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- CN
- China
- Prior art keywords
- jack
- boom support
- decentralization
- tunnel
- falling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
Abstract
The present invention provides a kind of for falling boom support in tunnel, it include: reaction frame, including spaced two root posts, the stringer that support is fixed on two principal posts, two pull rods for being individually fixed in two columns close to one end of the stringer and tilting down extension；And beam equipment is fallen, the distribution beam of the stringer is fixedly supported to including decentralization jack and by the decentralization jack.Uniting for the girder system that falls in tunnel for boom support is fallen with this present invention also provides a kind of.It is of the invention for falling boom support and fall that girder system system good reliability, highly-safe, to fall beam high-efficient in tunnel compared with the relevant technologies.
Description
Technical field
The present invention relates to a kind of tunnel bridge engineering machinery field more particularly to it is a kind of in tunnel fall boom support and
Fall girder system system.
Background technique
It is high as China's urban highway traffic scale, overall trip speed, operating mileage and operation frequency etc. are constantly promoted
The construction of fast highway is more and more, and highway needs to cross over mountain after mountain all in meagrely-populated location mostly.
For being laid with the position of bridge between tunnel, laying generally uses jack combination cushion block when falling beam, falls beam every time
20mm, although this falls beam method stability good, its long construction period, low efficiency.
Therefore, it is necessary to provide, one kind is new to solve the above problems for falling boom support and falling girder system system in tunnel.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of short construction period, high-efficient and safety and stability fall beam branch
Frame.
In order to solve the above technical problems, the present invention provides a kind of for falling boom support in tunnel, comprising: reaction frame,
Including spaced two root posts, support be fixed on two principal posts stringer, be individually fixed in two columns
One end of the close stringer and two pull rods for tilting down extension；And beam equipment is fallen, including decentralization jack and by institute
State the distribution beam that decentralization jack is fixedly supported to the stringer.
Preferably, the decentralization jack is that punching transfers jack.
Preferably, the decentralization jack includes two and is spaced apart from each other setting.
Preferably, the beam equipment that falls further includes the leveling being located between the decentralization jack and the distribution beam
Plate.
Preferably, the leveling board is with a thickness of 50mm.
Preferably, the reaction frame further include both ends be respectively fixedly connected with the pull rod described in one group interconnected with it is described
Strut between column.
It preferably, include two struts, and two struts between every group of pull rod interconnected and the column
One end close to the column is spaced apart from each other, and is connected with each other close to one end of the pull rod.
Preferably, each decentralization jack assembles top one-way hydraulic lock and stall proof decline balanced valve.
The present invention also provides a kind of for falling girder system system in tunnel, comprising: falls boom support, the boom support that falls includes two
A and be oppositely arranged, the boom support that falls is to fall boom support described in above-mentioned any one provided by the invention；Hydraulic power unit, institute
Stating hydraulic power unit includes two, and two hydraulic power units are formed with the decentralization jack for falling boom support described in two respectively
Hydraulic circuit, for driving the decentralization jack to work；And control cabinet, the control cabinet respectively with two hydraulic power units
Electrical connection is worked with the hydraulic power unit is controlled.
Preferably, the control cabinet uses electro-hydraulic proportional control technology, passes through hydraulic power unit work described in electrical-liquid control
Make.
Compared to the prior art, the boom support that falls being used in tunnel of the invention is matched using reaction frame and decentralization jack
It closes and implements to fall beam, reaction frame provides load-bearing and support, and security and stability is good, and decentralization jack is that punching transfers jack, leads to
It crosses steel strand wires and is fixedly connected with the lower let-down beam of implementation with steel box-girder, fall that beam speed is fast, and high degree shortens construction period；It is fallen with this
Boom support is fallen in girder system system, controls two hydraulic power units by control cabinet, two hydraulic power units control respectively it is multiple under
Jack is put, jack is transferred by liquid electric proportional control and is implemented, good reliability, stability are high and to fall beam speed fast.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, in which:
Fig. 1 is the present invention for the structural schematic diagram for falling boom support in tunnel；
Fig. 2 is the present invention for another visual angle schematic diagram for falling boom support in tunnel；
Fig. 3 is the present invention for the structural schematic diagram for falling girder system system in tunnel.
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 the described embodiments are merely 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.
It please join shown in Fig. 1-2, the present invention provides a kind of for falling boom support 100 in tunnel, including reaction frame 1 and falls
Beam equipment 2.
The reaction frame 1 includes spaced two root posts 11, supports the stringer being fixed on two principal posts 11
12, two columns 11 are individually fixed in close to one end of the stringer 12 and tilt down extension two pull rods 13 and
Both ends are respectively fixedly connected with the strut 14 described in one group interconnected between pull rod 13 and the column 11.
13 one end fixed anchoring of pull rod is anchored point pre-embedded steel slab, reinforces reliability in ground.
It include two struts 14, and two struts 14 between every group of pull rod 13 and the column 11 interconnected
One end close to the column 11 is spaced apart from each other, and is connected with each other close to one end of the pull rod 13, which effectively increases instead
The stability of power frame 1.
The beam equipment 2 that falls includes transferring jack 21, the decentralization jack 21 being fixedly supported to the stringer 12
Distribution beam 22 and be located in it is described decentralization jack 21 and the distribution beam 22 between leveling board 23.
In present embodiment, the decentralization jack 21 is that punching transfers jack.Specifically, the decentralization jack
21 include two and are spaced apart from each other setting.
More preferably, each decentralization jack 21 assembles top one-way hydraulic lock (not shown) and stall proof decline balance
Valve (not shown), for can ensure that system automatic synchronization is self-locking when accidental power failure, pipeline rupture occurs in construction, structure is smoothly
A certain height is parked in without dropping, is improved reliability effectively and safety.
The leveling board 23 is used to fall balance adjustments when beam, specifically, the leveling board 23 is with a thickness of 50mm.
Incorporated by reference to shown in Fig. 3, the present invention also provides a kind of for falling girder system system 200, including present invention offer in tunnel
Above-mentioned fall boom support 100, hydraulic power unit 201 and control cabinet 202.
The boom support 100 that falls includes two and is oppositely arranged.
The hydraulic power unit 201 include two, two hydraulic power units 201 respectively with fall boom support 100 described in two
The decentralization jack 21 form hydraulic circuit, for driving the decentralization jack 21 work.
The control cabinet 202 is electrically connected with two hydraulic power units 201 respectively, with control 201 work of hydraulic power unit
Make.In present embodiment, the control cabinet 202 uses electro-hydraulic proportional control technology, passes through hydraulic pump described in electrical-liquid control
It stands 201 work, reliable peace and safety is good, control accuracy is high and it is fast to fall beam speed.
In present embodiment, it is described fall boom support 100 and carry ensure that single about 280 tons of steel box-girder body is stablized and fall.Steel
Box beam 3 is fixed on realization on decentralization jack 21 by steel strand wires 4 and anchorage 5 and falls beam.
For existing structure:
The beam period: traditional handicraft is fallen, falls 4 meters of depth of beam, about 10 days；And girder system is fallen using the present invention and is united: about 1 hour
Fall beam in place.
Safe and stable property: tradition falls beam, and using jack cushioning block to fall safety beam risk big, wants to cushion block lower stable
Ask high；And girder system system is fallen using the present invention and greatly reduces security risk.The beam period will be fallen by 10 days, be compressed to 1 hour, it is real
Existing high construction efficiency.
It falls beam process safety to stablize: falling that boom support stress is safely controllable, and falling each drop point of beam process can monitor in real time.
In present embodiment, falls boom support 100 and is used as load-supporting part:
The weight that receiving on stringer 12 transfers component is fixed on by jack 21 is transferred by steel strand wires 4 and anchorage.User
The quantity of decentralization jack 21 (i.e. punching decentralization jack) can be configured according to the size of decentralization weight (decentralization load),
Transferring jack 21 in each decentralization suspension centre can be used in parallel.
Steel strand wires 4 use high strength low relaxed prestress steel strand, nominal diameter 15.24mm, and tensile strength is
1860N/mm2, rupture pull force 260.7KN, minimum load 221.5KN of the elongation at 1%, every meter of weight is 1.1Kg.Steel
Twisted wire meets international standard ASTM A416-87a, and tensile strength, geometric dimension and surface quality all obtain strict guarantee.It adopts
With advanced design method (digital technology and finite element analysis technology) and stringent quality control method, to ensure the decentralization
Jack 21 is perfectly safe.
Transfer jack 21 i.e. transfer oil cylinder be core-theaded type structure, production process in strict accordance with ISO9000 quality standard into
The control of row quality.Every decentralization jack 21 carries out stringent test in factory, and test specifically includes that functional trial and resistance to
Long property test.In foreign project, decentralization jack 21 has passed through the U.S. and German stringent testing standard.
The characteristics of transferring jack is as follows:
(1) sealing element uses Germany technology, the sealing performance of decentralization jack is effectively ensured, to improve decentralization jack
Functional reliability；
(2) functional reliability of anchorage is higher；
(3) take modularized design, once breaking down in use process, can replace at any time, it is ensured that engineering it is smooth
It carries out；
(4) pressure x velocity control valve is installed in transferring jack, it is ensured that oil cylinder is steadily safe when band carries decline；
(5) use can also be combined in decentralization jack, is combined using 2 decentralization jack, forms 1 continuous decentralization thousand
Jin top.
When girder steel decentralization and whereabouts, each setting point arranges that 21,4 setting points of decentralization jack of 1 100t are arranged altogether
Jack 21 is transferred described in four 100t.
100t transfers jack specification and technical parameter:
Every decentralization jack 21 is equipped with one-way hydraulic lock, stall proof lowering means (balanced valve), anticipates in construction
It can ensure that system automatic synchronization is self-locking when outer power failure, pipeline rupture, structure is smoothly parked in a certain height without dropping；Then
In steel box-girder bottom, there is pushing tow buttress as Auxiliary support, sequence of construction is first to cut off the pushing tow buttress an of stroke, then transfer
One stroke so that between steel box-girder and pushing tow pier only one each stroke difference in height.
The hydraulic power unit 201 is the power drive portion for falling girder system system 200, its performance and reliability falls beam to entire
The reliable and stable work influence of system 200 is maximum.In the system of the hydraulic power unit 201, using ratio simultaneous techniques, in this way
The synchronous adjustment performance of whole system can be effectively improved.
The characteristics of hydraulic power unit:
Synchronously control in hydraulic decentralization is realized by electro-hydraulic proportional control technology using electro-hydraulic proportional control technology, is controlled
Precision height processed.It is integrally transferred in engineering in National Digital Library's steel construction, arranges 28 synchronous decentralization suspension centres altogether, use 64
Jack is transferred, using electro-hydraulic proportional control technology, the synchronous control accuracy between each point is in ± 1mm.
Load protection specially devises the load protection for transferring oil cylinder to every, makes in the system of hydraulic power unit 201
It is whole to transfer relatively reliable safety.
Clearly modularized design, for the requirement of different engineerings, comprehensively consider hydraulic power unit 201 versatility,
Reliability and the degree of automation.In different engineerings in use, since equipment arrangement and requirement are not quite similar, in order to improve
The design of the versatility of equipment, the system of hydraulic power unit 201 uses modular construction.
The import of main hydraulic Germany, in existing hydraulic power unit, crucial Hydraulic Elements are such as pumped, proportioning valve is adopted
With German product, the reliability of hydraulic system is greatly improved.
Double pump, double major loops and double ratio valve systems realize continuous decentralization, continuous decline and big flow driving.
According to mentioned above principle, and the arrangement of this engineering decentralization jack is combined, prepares 2 hydraulic power units 201, stream altogether
Amount is 80L/min.80L/min hydraulic power unit is double pump, double proportioning valves and two-way hydraulic power unit, and two-way can either be independently operated,
Also it can merge use.
It is configured according to above-mentioned hydraulic power unit, lowering velocity is up to 3~5 ms/h.
201 specification of hydraulic power unit and technical parameter:
| Model | Rated pressure | Metered flow | Pumping plant power | Remarks |
| TX-80-P-D | 31.5MPa | 80l/min | <50KW | Two-way ratio system |
In present embodiment, using sensing detection, it is mainly used to obtain location information, the load information of decentralization jack 21
It is lowered component aerial statue information with entire, and these information are transferred to the master of control cabinet 202 by live real-time network
Control computer.Main control computer can determine decentralization jack 21 according to the decentralization oil cylinder position information that current network transmits in this way
Next step movement, meanwhile, main control computer can also determine according to the decentralization load information and component posture information that network transmits
Determine the synchronous adjustment amount of whole system.
Main control computer in addition to control it is all it is described decentralization jack 21 integrating actions other than, it is necessary to guarantee it is each under
The position for putting suspension centre is synchronous.It is fallen in girder system system 200 described, sets main order and transfer suspension centre, other decentralization suspension centres are hung with main order
The position of point as a reference to be adjusted, thus, be all to follow decentralization suspension centre.
Main that decentralization suspension centre is enabled to determine the lowering velocity for entirely falling girder system system 200, operator can be according to hydraulic power unit 201
Assignment of traffic and other factors set lowering velocity.According to the present invention to fall 200 design of girder system system, maximum lowering velocity is not
Greater than 10 ms/h.The main setting for enabling lowering velocity is the proportioning valve in the system by proportional hydraulic pumping plant 201 to realize
's.
In addition, of the invention fall boom support 100 and fall the safety stock in girder system system 200 are as follows:
Fall safety beam coefficient: K=4x100/300t=1.3
Steel strand wires safety coefficient: 4x9x16t/300t=1.92
Fall Liang Sudu: v=3~5m/h
According to the design feature of steel construction itself, the arrangement of setting point is consistent with the Stiffness Distribution of structure, while
The structure stress situation of the structure stress situation and real use state that guarantee decentralization state is coincide substantially.In present embodiment
1 control cabinet 202 is selected to control two hydraulic power units 201, a hydraulic power unit 201 controls two decentralization jack
21 method, by girder steel steady fall to designed elevation.
Compared to the prior art, the boom support that falls being used in tunnel of the invention is matched using reaction frame and decentralization jack
It closes and implements to fall beam, reaction frame provides load-bearing and support, and security and stability is good, and decentralization jack is that punching transfers jack, leads to
It crosses steel strand wires and is fixedly connected with the lower let-down beam of implementation with steel box-girder, fall that beam speed is fast, and high degree shortens construction period；It is fallen with this
Boom support is fallen in girder system system, controls two hydraulic power units by control cabinet, two hydraulic power units control respectively it is multiple under
Jack is put, jack is transferred by liquid electric proportional control and is implemented, good reliability, stability are high and to fall beam speed fast.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of for falling boom support in tunnel characterized by comprising
Reaction frame, the stringer being fixed on two principal posts including spaced two root posts, support are individually fixed in two
Column described in root close to the stringer one end and tilt down two pull rods of extension；And
Beam equipment is fallen, the distribution beam of the stringer is fixedly supported to including decentralization jack and by the decentralization jack.
2. according to claim 1 for falling boom support in tunnel, which is characterized in that the decentralization jack is punching
Formula transfers jack.
3. according to claim 1 for falling boom support in tunnel, which is characterized in that the decentralization jack includes two
It is a and be spaced apart from each other setting.
4. according to claim 1 for falling boom support in tunnel, which is characterized in that the beam equipment that falls further includes folder
Leveling board between the decentralization jack and the distribution beam.
5. according to claim 4 for falling boom support in tunnel, which is characterized in that the leveling board with a thickness of
50mm。
6. according to claim 1 for falling boom support in tunnel, which is characterized in that the reaction frame further includes both ends
It is respectively fixedly connected with the strut described in one group interconnected between pull rod and the column.
7. according to claim 6 for falling boom support in tunnel, which is characterized in that every group of drawing interconnected
It include two struts between bar and the column, and two struts are spaced apart from each other close to one end of the column, close to described
One end of pull rod is connected with each other.
8. according to claim 1 for falling boom support in tunnel, which is characterized in that each decentralization jack is equal
Assembly top one-way hydraulic lock and stall proof decline balanced valve.
9. a kind of for falling girder system system in tunnel characterized by comprising
Boom support is fallen, the boom support that falls includes two and is oppositely arranged, and the boom support that falls is that claim 1~8 is any one
Boom support is fallen described in；
Hydraulic power unit, the hydraulic power unit include two, two hydraulic power units respectively with institute that boom support is fallen described in two
It states decentralization jack and forms hydraulic circuit, for driving the decentralization jack to work；And
Control cabinet, the control cabinet are electrically connected with two hydraulic power units respectively, are worked with the hydraulic power unit is controlled.
10. according to claim 9 for falling girder system system in tunnel, which is characterized in that the control cabinet is using electro-hydraulic
Ratio control technology is worked by hydraulic power unit described in electrical-liquid control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910285183.9A CN110080108A (en) | 2019-04-10 | 2019-04-10 | It unites for falling boom support and falling girder system in tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910285183.9A CN110080108A (en) | 2019-04-10 | 2019-04-10 | It unites for falling boom support and falling girder system in tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110080108A true CN110080108A (en) | 2019-08-02 |
Family
ID=67414705
Family Applications (1)
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|---|---|---|---|
| CN201910285183.9A Pending CN110080108A (en) | 2019-04-10 | 2019-04-10 | It unites for falling boom support and falling girder system in tunnel |
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2019
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Application publication date: 20190802 |