CN106400701B - A kind of list girder low level balanced cantilever assembly Bridge Erector - Google Patents
A kind of list girder low level balanced cantilever assembly Bridge Erector Download PDFInfo
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- CN106400701B CN106400701B CN201610721272.XA CN201610721272A CN106400701B CN 106400701 B CN106400701 B CN 106400701B CN 201610721272 A CN201610721272 A CN 201610721272A CN 106400701 B CN106400701 B CN 106400701B
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- girder
- crane
- supporting leg
- main supporting
- bridge erector
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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
- E01D21/10—Cantilevered erection
- E01D21/105—Balanced cantilevered erection
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- Engineering & Computer Science (AREA)
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- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
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Abstract
A kind of entitled single girder low level balanced cantilever assembly Bridge Erector of the present invention.Belong to prefabricated subsection balanced cantilever assembly bridge formation technical field.It mainly solves the problems, such as that existing Bridge Erector has larger and excessive height of conducting oneself with dignity.It is mainly characterized by：Including girder, preceding hoisting overhead travelling crane, rear hoisting overhead travelling crane, preceding main supporting leg, middle main supporting leg, rear main supporting leg, segment hanging beam and tensioning platform, girder is single rectangular frame structure, and girder top is provided with overhead crane orbit, and girder lower edge is provided with stainless steel track；The preceding hoisting overhead travelling crane, rear hoisting overhead travelling crane structure are identical, and including two independent hoist systems and overhead traveling crane across beam, for overhead traveling crane across girder span seat on the overhead crane orbit of girder, the top of two independent hoist systems is fixed on overhead traveling crane across the both ends of beam.The present invention has the characteristics that simple in structure, operation is easy and construction process is easy, and it is smaller to the active force of permanent structure to be mainly used for permanent structure design requirement Bridge Erector, and must pass through the situation of limit for height.
Description
Technical field
The invention belongs to prefabricated subsection balanced cantilever assembly bridge formation technical fields.More particularly to a kind of safe, light-duty, simple
Single, practical novel single girder low level balanced cantilever assembly Bridge Erector.
Background technology
Precast segment assembling technique is obtained with its good economic and social benefit at home and abroad in Urban Bridge construction
It is commonly used.Balanced cantilever assembly is as in a kind of more bridge construction for long across footpath of Precast Concrete Segmental Bridges technology.
Balanced cantilever, which is assembled in from construction, generally has truck crane to set a roof beam in place, erection crane is set a roof beam in place, girder erection by bridging machine.It wherein builds bridge rack
Beam is adopted extensively with the features such as its construction efficiency height, job safety, small, construction cost is less construction area requirement by unit in charge of construction
With being most common balanced cantilever assembling and construction method.
Certain project carries out prefabricated subsection balanced cantilever assembling construction using Bridge Erector, it is desirable that Bridge Erector is to the branch of bent cap pier stud
Counter-force must not exceed 2500kN, and Bridge Erector needs the door type structure by limit for height 5.7m.Pier stud bent cap both sides first to segment and
Pier stud bent cap is connected using wet seam.Domestic balanced cantilever Bridge Erector is using double main beam structures at present, and dead weight is larger, no
Construction support reaction requirement can be met；And in order to meet double girder bridge erecting machine construction needs, height of landing leg is larger, it is impossible to meet limit
High demand.
Invention content
The present invention is for more than project demand, devises a kind of light-duty low level balanced cantilever assembly Bridge Erector of single girder.
The Bridge Erector is lighter using single main beam structure and optimization design, construction weight.Leg structure designs relatively low, carries rising for segment
Weight overhead traveling crane is designed using straddle-type, further reduced Bridge Erector overall height, it is ensured that the door type structure that Bridge Erector passes through limit for height.
The present invention technical solution be：A kind of list girder low level balanced cantilever assembly Bridge Erector, including girder, preceding
Weight overhead traveling crane, rear hoisting overhead travelling crane, preceding main supporting leg, middle main supporting leg, rear main supporting leg, segment hanging beam and tensioning platform, it is characterised in that：Institute
The girder stated is single rectangular frame structure, is the most important support section of Bridge Erector, girder top is provided with overhead crane orbit, girder
Lower edge is provided with stainless steel track, and girder via is pushed for main supporting leg；The preceding hoisting overhead travelling crane, rear hoisting overhead travelling crane structure phase
Together, including two independent hoist systems and overhead traveling crane across beam, overhead traveling crane, on the overhead crane orbit of girder, is somebody's turn to do across girder span seat
The top of two independent hoist systems is fixed on overhead traveling crane across the both ends of beam.
Preceding hoisting overhead travelling crane, rear hoisting overhead travelling crane described in the technical solution of the present invention are respectively provided with two independent hoist engines
System, the hoist engine of an independent hoist system in two hoist systems is double wrap rope structure.
The hoist engine of the hoist system of preceding hoisting overhead travelling crane, rear hoisting overhead travelling crane described in the technical solution of the present invention
Equipped with the transverse-moving mechanism adjusted for segment horizontal direction；Preceding hoisting overhead travelling crane, rear hoisting overhead travelling crane are driven by sprocket wheel chain mechanism
To realize the back-and-forth motion on girder.The effect of Bridge Erector precast segmental beam construction is effectively raised using double Overhead travelling crane systems
Rate.
The present invention technical solution described in girder by structure it is identical module splicing forms, each module by
It cuboid frame and is fixed on the supermedial girder segment of each hack lever of cuboid frame under truss, girder segment truss and forms；
Setting workbench inside girder operates Bridge Erector for safety of workers；Girder side is provided with to show crane's major girder
The label of displacement distance, convenient for observing Bridge Erector via distance.
Preceding main supporting leg, middle main supporting leg described in the technical solution of the present invention is identical with the structure of rear main supporting leg,
Main function is support crane's major girder and pushes Bridge Erector via；Preceding main supporting leg, middle main supporting leg and rear main supporting leg by comprising
It is the via stent of via oil cylinder and clamping cylinder, equalizer, telescopic column, four telescopic oil cylinders, rotating beam, transversely-moving rack, traversing
Sliding rail forms；Girder is supported on by stainless steel track on the slide plate of equalizer, and slide plate is the slide plate of special nylon material, it is ensured that sliding
Plate and stainless steel track friction are smaller；Telescopic column is connected between equalizer and rotating beam, for adjusting the height of main supporting leg,
Ensure that main supporting leg meets Bridge Erector via or sets up the height of landing leg demand of longitudinal slope；Four telescopic oil cylinders are symmetrically fixed on equilibrium
Beam using the principle of 4 stress, 3 points of balances, needs to carry out height for jacking up or declining main depth of beam and other
The situation of adjustment；Rotating beam is arranged on the turntable of transversely-moving rack, and the setting of the rotating beam can make main supporting leg two parts up and down
Relative rotation occurs so as to which Bridge Erector be allow to set up camber beam；Transversely-moving rack is loaded on by sliding beam on transverse slide rail, sliding beam
On be provided with sliding oil cylinder, allow entire main supporting leg traversing and then ensure that Bridge Erector can set up multiple line with cross-line.
Tensioning platform described in the technical solution of the present invention is connect with prefabricated subsection using chain block；Tensioning is put down
The end position of platform is equipped with can be with the fixed positioning pin of prefabricated subsection.Tensioning platform is for carrying out segment after segment lifting
The workbench of tensioning, is installed on ground, as segment is lifted into high-altitude together.Chain block and positioning pin can prevent
Tensioning platform is fallen down from prefabricated subsection, so that it is guaranteed that safety.
According to construction process, wet seam is provided between segment and bent cap at first pair, segment hanger is used exclusively for carrying
First pair of segment is hung in order to which wet seam is constructed.Beam sections adjusting apparatus is provided with, it can be in transverse direction, longitudinal direction and height side
To adjustment beam sections, beam sections is made to reach design position.
The present invention has the characteristics that simple in structure, operation easily and construction process is easy.Present invention is mainly used for permanent knots
Structure design requirement Bridge Erector is smaller to the active force of permanent structure, and must pass through the situation of limit for height.
Description of the drawings
Fig. 1 is the structure total figure schematic diagram of the present invention.
Fig. 2 is structure section schematic diagram of the present invention.
Fig. 3 is girder segment of the present invention schematic diagram.
Fig. 4 is girder segment of the present invention side view.
Fig. 5 is the structure diagram of main supporting leg in the present invention.
Fig. 6 is that the present invention sets a roof beam in place schematic diagram one.
Fig. 7 is that the present invention sets a roof beam in place schematic diagram two.
Fig. 8 is via schematic diagram one of the present invention.
Fig. 9 is via schematic diagram two of the present invention.
Figure 10 is via schematic diagram three of the present invention.
Figure 11 is via schematic diagram four of the present invention.
In figure：Main branch after main supporting leg, 6- in main supporting leg, 5- before hoisting overhead travelling crane, 4- after hoisting overhead travelling crane, 3- before 1- girders, 2-
Leg, 7- segments hanging beam, 8- tensioning platform, truss, 11- workbenches, 12- marks under truss, 10- girders segment on 9- girders segment
Board, 13- vias stent, 14- equalizers, 15- telescopic oil cylinders, 16- telescopic columns, 17- rotating beams, 18- transversely-moving racks, 19- are traversing
Sliding rail.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
The component composition of Fig. 1 display present invention：Girder 1, preceding hoisting overhead travelling crane 2, rear hoisting overhead travelling crane 3, preceding main supporting leg 4, middle master
Supporting leg 5, rear main supporting leg 6, segment hanging beam 7 and tensioning platform 8.
As shown in Fig. 2, preceding hoisting overhead travelling crane 2,3 structure of rear hoisting overhead travelling crane are identical, including two independent hoist systems
With overhead traveling crane across beam, using the design principle of four-point hoisting three-point balancing.Overhead traveling crane is across girder span seat in the overhead crane orbit of girder 1
On, the top of two independent hoist systems is fixed on overhead traveling crane across the both ends of beam.Preceding hoisting overhead travelling crane 2, rear hoisting overhead travelling crane 3
Using straddle-type structure, hoist engine arrangement further reduced the height of Bridge Erector, Bridge Erector is overall high using sinkage type structure
Degree meets the requirement by door type structure limit for height.In 3 two preceding hoisting overhead travelling crane 2, rear hoisting overhead travelling crane independent hoist systems
The hoist engine of one independent hoist system is double wrap rope structure.The hoist system of preceding hoisting overhead travelling crane 2, rear hoisting overhead travelling crane 3
Hoist engine be equipped with for segment horizontal direction adjustment transverse-moving mechanism；Preceding hoisting overhead travelling crane 2, rear hoisting overhead travelling crane 3 pass through sprocket chain
The driving of item makes it be moved on girder 1 with being moved on girder 1, using double Overhead travelling crane systems, and it is prefabricated effectively to provide Bridge Erector
The efficiency of beam sections construction.
Fig. 3, Fig. 4 show the typical structure of crane's major girder 1.Girder 1 is single rectangular frame structure, is that Bridge Erector is most main
The support section wanted, 1 top of girder are provided with overhead crane orbit, and 1 lower edge of girder is provided with stainless steel track, are pushed for main supporting leg
Girder via.1 overall length 100m of girder is made of the identical module splicing of nine structures, each module by cuboid frame and
It is fixed on the supermedial girder segment of each hack lever of cuboid frame that truss 10 forms under truss 9, girder segment, is superimposed
Form complete module.Upper and lower frames, chord member, vertically and horizontally bar, hound and diagonal strut bar all weld together.Top and
Under(-)chassis is stitched together, and in node location vertical rod, hound and the support of diagonal strut bar connect.Each connection superposition
Part is fixed with four bolts and two 45mm axis pins.The chord member of the adjacent block of girder corresponds to splicing.Connecting portion is with four
A 52 special bolts and 40 axis pins are fixed.1 inside setting workbench 11 of girder, operates for safety of workers and builds bridge
Machine.1 side of girder is provided with the label 12 for showing crane's major girder displacement distance, convenient for observing Bridge Erector via distance.
The design feature of main supporting leg is further illustrated with reference to Fig. 5.The knot of preceding main supporting leg 4, middle main supporting leg 5 and rear main supporting leg 6
Structure is identical, and main function is support crane's major girder and pushes Bridge Erector via.Middle main supporting leg 5 is by via stent 13, equilibrium
Beam 14, telescopic column 16, four telescopic oil cylinders 15, rotating beam 17, transversely-moving rack 18, transverse slide rails 19 form.Via stent 13 wraps
Containing via oil cylinder and clamping cylinder, the operation principle of via stent 13 is as follows：Girder lower boom is clamped by clamping cylinder
Lower flange, the stretching of via oil cylinder can push girder to move ahead；Via oil cylinder stroke is treated in place after maximum position, clamping cylinder pine
It opens, via oil cylinder is recovered to the position of stroke minimum, and clamping cylinder clamps again, so moves in circles and the company of girder can be realized
It is continuous to move ahead.Girder 1 is supported on by stainless steel track on the slide plate of equalizer 14, and slide plate is the slide plate of special nylon material, it is ensured that
Slide plate and stainless steel track friction are smaller.Equalizer 14 is used for the stress of balanced main supporting leg, and slide plate can reduce girder and main branch
Friction coefficient between leg.Four telescopic oil cylinders 15 are symmetrically fixed on equalizer 14, using the principles of 4 stress, 3 points of balances,
For jacking up or declining the height of girder 1 and other situations for needing to carry out height adjustment.Telescopic column 16 is connected to
Between balance beam 14 and rotating beam 17, there is cushion block fixes main supporting leg height after being adjusted in place for telescopic oil cylinder on telescopic column 16
Degree, it is ensured that main supporting leg meets Bridge Erector via or sets up the height of landing leg demand of longitudinal slope.Rotating beam 17 is arranged on transversely-moving rack 18
On turntable, rotating beam 17 can be pushed to occur between transversely-moving rack 18 by oil cylinder existing to rotation, so as to fulfill rotation with frame
If camber beam.Transversely-moving rack 18, loaded on transverse slide rail 19, is provided with sliding oil cylinder by sliding beam in sliding beam, make entire main branch
Leg can be traversing and then ensures that Bridge Erector can set up multiple line with cross-line.
Tensioning platform 8 is connect with prefabricated subsection by chain block；The end position of tensioning platform 8 is equipped with can be with prefabricated section
The fixed positioning pin of section.Tensioning platform 8 is the workbench for carrying out segment tensioning after segment lifting, in prefabricated subsection
Also it is installation on ground, as segment is lifted into high-altitude together.Chain block and positioning pin can prevent tensioning platform 8 from prefabricated
It is fallen down on segment.
Fig. 6 to Fig. 7 is the schematic diagram of setting a roof beam in place of Bridge Erector, is described as follows.
After Fig. 6 shows that Bridge Erector is in place, preceding hoisting overhead travelling crane 2, rear hoisting overhead travelling crane 3 coordinate segment hanging beam to complete first pair of segment
After lifting, the enforcement of going forward side by side of first pair of wet seam between segment and bent cap of construction carries out tensioning with tensioning platform 8.Treat first pair
After segment is completed, preceding hoisting overhead travelling crane 2, rear hoisting overhead travelling crane 3 move segment width to P+1 pier studs and P-1 pier studs respectively
Distance, and lift second pair of segment.
It is that Bridge Erector constructs third to the 6th pair of segment using preceding hoisting overhead travelling crane 2, rear hoisting overhead travelling crane 3 successively that Fig. 7, which is shown,.
Bridge Erector construction finish it is previous across beam sections after, start via to next across erection, Specific construction step
It is as shown in Figs. 8 to 11, it is described as follows.
It is shown according to Fig. 8, hoisting overhead travelling crane 2 preceding first, rear hoisting overhead travelling crane 3 are run in front of Bridge Erector matches above P+1 pier studs
Weight.
As shown in figure 9, under the promotion of middle main 5 via oil cylinder of supporting leg, girder 1 is moved forward until the center of girder reaches
The center of pier stud P+1 and pier stud P, the distance of specific girder movement can be determined by label 12 on girder 1.
As shown in Figure 10, after step shown in Fig. 9 is completed, preceding hoisting overhead travelling crane 2, rear hoisting overhead travelling crane 3 move backward to pier
Counterweight above column P.The height of main supporting leg in being reduced later by the telescopic oil cylinder 15 and telescopic column 16 of supporting leg main in operation, from
And declining 1 rear end of crane's major girder, front end tilts.
As shown in figure 11, the main supporting leg on pier stud P-1 is had bad luck using crane and transport vehicle on pier stud P+2 in advance.After
Via stent 13 in continuous driving on main supporting leg 5 makes crane's major girder 1 continue to move ahead until crane's major girder 1 reaches specific bit
It puts.The height of supporting leg 5 makes crane's major girder 1 horizontal in adjustment bridge formation owner.Preceding hoisting overhead travelling crane 2, rear hoisting overhead travelling crane 3 run to P+
1 pier stud, so far Bridge Erector via process completion start to set up new one across prefabricated subsection.
Above that illustrative explanation has only been carried out to the present invention, specific implementation of the invention is not limited thereto.
The insubstantial modifications that any design using the present invention and technical solution carry out, within protection scope of the present invention.
Claims (5)
1. a kind of list girder low level balanced cantilever assembly Bridge Erector, including girder（1）, preceding hoisting overhead travelling crane（2）, rear hoisting overhead travelling crane
（3）, preceding main supporting leg（4）, middle main supporting leg（5）, rear main supporting leg（6）, segment hanging beam（7）With tensioning platform（8）, it is characterised in that：
The girder（1）It is the most important support section of Bridge Erector for single rectangular frame structure, girder（1）Top is provided with overhead traveling crane
Track, girder（1）Lower edge is provided with stainless steel track；The preceding hoisting overhead travelling crane（2）, rear hoisting overhead travelling crane（3）Structure is identical,
Including two independent hoist systems and overhead traveling crane across beam, overhead traveling crane is across girder span seat in girder（1）Overhead crane orbit on, this two
The top of a independent hoist system is fixed on overhead traveling crane across the both ends of beam；The preceding main supporting leg（4）, middle main supporting leg（5）
With rear main supporting leg（6）Structure it is identical；Preceding main supporting leg（4）, middle main supporting leg（5）With rear main supporting leg（6）By including via oil cylinder
With the via stent of clamping cylinder（13）, equalizer（14）, telescopic column（16）, four telescopic oil cylinders（15）, rotating beam（17）、
Transversely-moving rack（18）, transverse slide rail（19）Composition；Girder（1）Equalizer is supported on by stainless steel track（14）Slide plate on, it is sliding
Plate is the slide plate of special nylon material；Telescopic column（16）It is connected to equalizer（14）With rotating beam（17）Between；Four flexible oil
Cylinder（15）Symmetrically it is fixed on equalizer（14）；Rotating beam（17）It is arranged on transversely-moving rack（18）Turntable on；Transversely-moving rack（18）It is logical
Sliding beam is crossed loaded on transverse slide rail（19）On, sliding oil cylinder is provided in sliding beam.
2. a kind of single girder low level balanced cantilever assembly Bridge Erector according to claim 1, it is characterised in that：Before described
Hoisting overhead travelling crane（2）, rear hoisting overhead travelling crane（3）It is respectively provided with two independent hoist systems, one in two independent hoist systems
The hoist engine of independent hoist system is double wrap rope structure.
3. a kind of single girder low level balanced cantilever assembly Bridge Erector according to claim 1 or 2, it is characterised in that：It is described
Preceding hoisting overhead travelling crane（2）, rear hoisting overhead travelling crane（3）Hoist system hoist engine be equipped with for segment horizontal direction adjustment horizontal stroke
Telephone-moving structure.
4. a kind of single girder low level balanced cantilever assembly Bridge Erector according to claim 1 or 2, it is characterised in that：It is described
Girder（1）It is made of the identical module splicing of structure, each module is by cuboid frame and to be fixed on cuboid frame each
Truss on the supermedial girder segment of hack lever（9）, truss under girder segment（10）Composition；Girder（1）Inside setting workbench
（11）；Girder（1）Side is provided with the label for showing crane's major girder displacement distance（12）.
5. a kind of single girder low level balanced cantilever assembly Bridge Erector according to claim 1 or 2, it is characterised in that：It is described
Tensioning platform（8）Being respectively equipped with can be with girder（1）The chain block of connection and the chain block that can be connect with prefabricated subsection；
Even up platform（8）End position be equipped with can be with the fixed positioning pin of prefabricated subsection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610721272.XA CN106400701B (en) | 2016-08-25 | 2016-08-25 | A kind of list girder low level balanced cantilever assembly Bridge Erector |
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| CN201610721272.XA CN106400701B (en) | 2016-08-25 | 2016-08-25 | A kind of list girder low level balanced cantilever assembly Bridge Erector |
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| CN106400701A CN106400701A (en) | 2017-02-15 |
| CN106400701B true CN106400701B (en) | 2018-06-29 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109208478B (en) * | 2017-06-30 | 2021-03-19 | 中交第二航务工程局有限公司 | Integrated rapid construction method for prefabricated bridge |
| CN109183618B (en) * | 2017-06-30 | 2023-12-19 | 中交第二航务工程局有限公司 | Bridge girder erection machine for rapid construction of prefabricated bridge |
| CN109024308B (en) * | 2018-06-21 | 2019-06-28 | 上海建工集团股份有限公司 | The dead load control device and method of Bridge Erector |
| CN108677742B (en) * | 2018-08-02 | 2024-03-08 | 中铁工程机械研究设计院有限公司 | Movable cantilever bridge girder erection machine for full-prefabricated bridge pier, bearing platform and girder body assembled construction |
| CN109610346B (en) * | 2018-12-18 | 2020-10-16 | 腾达建设集团股份有限公司 | Cantilever beam adjusting method |
| CN109750609A (en) * | 2019-01-04 | 2019-05-14 | 腾达建设集团股份有限公司 | The whole flat turn device of Bridge Erector and the construction method of Bridge Erector entirety flat turn |
| CN110616637B (en) * | 2019-08-14 | 2021-06-15 | 中交二航局第二工程有限公司 | Overlength multifunctional integrated bridge girder erection machine and construction method for installing prefabricated bridge |
| CN111139742B (en) * | 2019-12-26 | 2022-03-29 | 中铁十七局集团第三工程有限公司 | Method for mounting and dismounting highway bridge girder erection machine |
| CN114045755A (en) * | 2021-11-23 | 2022-02-15 | 中铁七局集团有限公司 | Auxiliary trolley machine construction method for small clearance frame beam construction |
| CN114481844B (en) * | 2022-01-21 | 2024-04-30 | 中铁十一局集团有限公司 | Bridge girder erection machine is pieced together to festival |
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| CN1940183A (en) * | 2006-08-04 | 2007-04-04 | 铁道第五勘察设计院 | Continuous medium-spanning beamed motor bridge and its erection |
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