CN109881590A - Bridge steel box girder high altitude operation operating platform and building method - Google Patents
Bridge steel box girder high altitude operation operating platform and building method Download PDFInfo
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- CN109881590A CN109881590A CN201910313510.7A CN201910313510A CN109881590A CN 109881590 A CN109881590 A CN 109881590A CN 201910313510 A CN201910313510 A CN 201910313510A CN 109881590 A CN109881590 A CN 109881590A
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Abstract
The invention discloses bridge steel box girder high altitude operation operating platform and building method, which includes that steel pipe truss, two movable hanging frames and two hoist engines, steel pipe truss are rectangular parallelepiped structure；Two movable hanging frames to the longitudinally central line of operation steel box-girder as symmetry axis to be symmetricly set on at left and right sides of operation steel box-girder, each movable hanging frame is made of two F shape brackets and several connecting rods, each F shape bracket is made of mobile jib and two cross bars, two vertical bars are equipped between each two cross bar of F shape bracket, every vertical bar lower end extends downwardly and is lower than lower section cross bar, is equipped with idler wheel in the lower end that every vertical bar extends downwardly；Two of steel pipe truss wind up to be responsible for and be fixedly connected with two movable hanging frames；Two hoist engines are located at one end to operation steel box-girder cover top surface longitudinal direction, and are connect by wirerope with movable hanging frame；It winds up to be responsible for steel pipe truss two to operation steel box-girder bottom plate and be connected by four jacks.The operating platform does not influence traffic under bridge, at low cost, utilization rate is high.
Description
Technical field
The present invention relates to construction steel structure technical field of construction, and in particular to bridge steel box girder high altitude operation operating platform and
Building method.
Background technique
In municipal traffic science of bridge building, the big section of bridge pier span generally uses steel box girder, the steel of this form
Box section is larger, laterally, longitudinal length it is larger, generally use factory's segmentation framing sub-unit module making, on-site consolidation, whole
The construction method of body lifting, but sometimes for the reason of considering control engineering cost, reducing machinery expenses or in some municipal administrations
When in road reformation engineering without on-site consolidation place, it is necessary to be considered as segmentation framing lifting, overhead connection close up it is integral
Construction method.However, need to close up to steel box-girder overhead connection for being completed between two bridge piers after the upper air installing of steel box-girder
When contour idle job is painted on the welding of weld seam and coating steel box-girder surface, then need to set up operating platform, conventional method is to set up
On the spot integral-scaffold will affect normal vehicular traffic under bridge, and higher cost in this way.
Summary of the invention
In view of the above shortcomings of the prior art, the object of the invention is that provide do not influence vehicular traffic under bridge,
Bridge steel box girder high altitude operation operating platform and building method at low cost, utilization rate is high.
The technical scheme of the present invention is realized as follows:
Bridge steel box girder high altitude operation operating platform, including steel pipe truss, two movable hanging frames, two hoist engines and four fall
Chain, the steel pipe truss are rectangular parallelepiped structure, and You Lianggen winds up supervisor, two lower edges supervisor and several branch pipes composition, steel pipe purlin
The length of frame is greater than to operation steel box-girder maximum width.
Described two movable hanging frames to the longitudinally central line of operation steel box-girder as symmetry axis to be symmetricly set on to operation steel
At left and right sides of box beam, each movable hanging frame is made of two F shape brackets and several connecting rods, the F shape bracket phase of two movable hanging frames
To setting, each F shape bracket is made of mobile jib and two cross bars, and the mobile jib is vertically arranged, and two cross bars are set in parallel up and down
Mobile jib top and vertical with mobile jib, wherein the cross bar of top is located at mobile jib top, it is logical between two F shape brackets of each movable hanging frame
Cross that connecting rod is connected and fixed and horizontal distance between two F shape brackets is corresponding with the width of steel pipe truss；In each F shape bracket two
Two vertical bars are equipped between cross bar, two vertical bars are vertical with two cross bars, and every vertical bar lower end extends downwardly and is lower than lower section cross bar, every
The lower end that root vertical bar extends downwardly is equipped with idler wheel；Two movable hanging frames are mounted on by idler wheel to operation steel box-girder cover top surface
And it can be vertically moved along to operation steel box-girder.
Two of the steel pipe truss wind up be responsible for upper surface be respectively equipped with it is corresponding with every mobile jib of two movable hanging frames
Lifting lug I, every mobile jib lower end are equipped with the connection platform sling matched with corresponding lifting lug I, and connection platform sling and lifting lug I are solid by pin shaft
Fixed connection.
One end to operation steel box-girder cover top surface longitudinal direction is arranged in two hoist engine, and passes through wirerope and movement
Hanger connection；Corresponding steel pipe truss two, which winds up, below to operation steel box-girder bottom plate is responsible for upper surface and is respectively provided with two lifting lugs II,
Accordingly, to operation steel box-girder lower surface of base plate be equipped with the one-to-one lifting lug III of lifting lug II, four jacks
Wherein one end is connect with lifting lug II respectively, and the other end is connected with corresponding lifting lug III respectively.
Further, the mobile jib lower end is equipped with ring flange I, and the upper end for connecting platform sling is equipped with method corresponding with ring flange I
Blue disk II, ring flange I are fixedly connected with ring flange II by threaded fastener.
Further, it is equipped with adjusting rod between the mobile jib and connection platform sling, the upper end of the adjusting rod is equipped with and flange
The corresponding ring flange III of disk I, lower end are equipped with ring flange IV corresponding with ring flange II, the ring flange I and ring flange III, flange
Disk II is fixedly connected by threaded fastener with ring flange IV.
Further, two attachment beams, one end of every attachment beam and a wherein F shape bracket are equipped between two movable hanging frames
Cross bar connection, the other end connect with the other side and with the cross bar of the symmetrical F shape bracket of F shape bracket.
Further, the branch pipe of the steel pipe truss includes straight tube and inclined tube, and adjacent two straight tube and adjacent two are responsible for
Rectangle is formed, inclined tube is arranged along the diagonal line of rectangle, and the distance between adjacent two straight tube is less than or equal to 1m.
The building method of bridge steel box girder high altitude operation operating platform, this building method is to mentioned-above bridge steel box girder
High altitude operation operating platform is built, specifically includes the following steps:
(1) after being on the ground fixedly connected with two attachment beams with two movable hanging frames respectively, steel case is lifted into truck crane
On back plate, so that the idler wheel of movable hanging frame is placed on the upper surface of steel box-girder top plate, mobile jib is located at the left and right sides of steel box-girder
And it is hanging；
(2) jack one end is winded up with steel pipe truss two is responsible for the lifting lug II of upper surface and connect, the other end and corresponding steel box-girder bottom
The lifting lug III of plate lower surface connects, and so completes the installation of four jacks, all jacks is then dropped, so that steel pipe truss reaches
Working depth；
(3) the wind up lifting lug I of supervisor of the connection platform sling and steel pipe truss of movable hanging frame mobile jib lower end is connected using pin shaft,
And then movable hanging frame mobile jib and steel pipe truss are connected；
(4) two hoist engines are fixed on to operation steel box-girder cover top surface construction direction of advance one end and positioned at the end or so
Two sides, every hoist engine are simultaneously connected with corresponding movable hanging frame by wirerope respectively, the tension of starting hoist engine, winding steel wire
Rope so that the idler wheel on movable hanging frame be pulled to rotate, and then realizes that whole operation platform is mobile, and the high-altitude for completing steel box-girder is made
Industry.
Compared with prior art, the invention has the following beneficial effects:
1, the present invention is carrier using mounted steel box-girder, and adaptation to local conditions avoids and sets up the on the spot measures such as scaffold, not shadow
Vehicle normal pass under bridge is rung, while the construction site place that be also adapted to restricted clearance etc. complicated.
2, the present invention is using the steel box-girder that is installed as moving track, and by stages construction, more sets settable when necessary are together
Shi Zuoye improves working efficiency.
3, the present invention can adjust the height of the operating platform from the ground by adjusting jack length according to steel box-girder height
Degree, and can be connected and fixed steel pipe truss and movable hanging frame by using the adjusting rod of different size, so as to meet difference
The steel box-girder high altitude operation of height needs.
4, invention has the advantages of high efficiency, utilization rate is high, amortization is at low cost, and lifting work avoids answering for large lifting equipment
With economic benefit is obvious.
Detailed description of the invention
Fig. 1-using state structure diagram of the present invention.
Fig. 2-F shape supporting structure schematic diagram.
Fig. 3-steel pipe truss main view.
Wherein: 1- steel pipe truss；2- mobile jib；3- adjusting rod；4- attachment beam；5- jack；6- hoist engine；7- waits for operation steel case
Beam；8- idler wheel；9- cross bar；10- connecting rod；11- vertical bar；12- supervisor；13- inclined tube；14- straight tube；15- connection platform sling；16- is hung
Ear I；17- lifting lug II.
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and detailed description.
Referring to figure 1, figure 2 and figure 3, bridge steel box girder high altitude operation operating platform, including steel pipe truss 1, two mobile extension
Frame, two hoist engines, 6, four jacks 5 and eight idler wheels 8, the steel pipe truss 1 is rectangular parallelepiped structure, by supervisor 12 and several
Branch pipe is constituted, wherein supervisor 12 includes two wind up supervisor and two lower edges supervisors, for the frame of space cuboid, and branch pipe
It is divided into straight tube 14 and inclined tube 13 is constituted, constitutes triangular shaped rock-steady structure with supervisor, guarantee entire space cuboid lattice
The structure safety of frame body.The length of steel pipe truss is greater than to 7 maximum width of operation steel box-girder；Steel pipe truss is side in the present embodiment
Steel-pipe welding forms, and it is highly 1m that truss width, which is 2m, for placing power tool and support behaviour during high altitude operation
Make personnel's operation.
Described two movable hanging frames to the longitudinally central line of operation steel box-girder as symmetry axis to be symmetricly set on to operation steel
At left and right sides of box beam, each movable hanging frame is formed by two F shape brackets and several connecting rods 10, the F shape bracket of two movable hanging frames
It is oppositely arranged, each F shape bracket is made of mobile jib 2 and two cross bars 9, and the mobile jib 2 is vertically arranged, and two about 9 cross bars are in parallel
Setting on 2 top of mobile jib and vertical with mobile jib 2, wherein above cross bar 9 be located at 2 top of mobile jib, two F shapes of each movable hanging frame
It is connected and fixed between bracket by connecting rod 10 and horizontal distance between two F shape brackets is corresponding with the width of steel pipe truss 1；?
Two vertical bars 11 are equipped between each two cross bar of F shape bracket, two vertical bars 11 are vertical with two cross bars 9, and every 11 lower end of vertical bar is to downward
Lower section cross bar is stretched and be lower than, is equipped with idler wheel 8 in the lower end that every vertical bar extends downwardly；Two movable hanging frames are mounted on by idler wheel
It can vertically move to operation steel box-girder cover top surface and along to operation steel box-girder.
Two of the steel pipe truss 1 wind up be responsible for upper surface be respectively equipped with it is corresponding with the every mobile jib 2 of two movable hanging frames
Lifting lug I 16, every mobile jib lower end is equipped with the connection platform sling 15 that match with corresponding lifting lug I 16, connects platform sling 15 and lifting lug I
16 are fixedly connected by pin shaft, so that two movable hanging frames are fixedly connected with steel pipe truss.
One end to operation steel box-girder cover top surface longitudinal direction is arranged in two hoist engine 6, and by wirerope and moves
Dynamic hanger connection；Corresponding steel pipe truss two, which winds up, below to operation steel box-girder bottom plate is responsible for upper surface and is respectively provided with two lifting lugs II
17, accordingly, to operation steel box-girder lower surface of base plate be equipped with the one-to-one lifting lug III of lifting lug II 17, described four fall
Wherein one end of chain 5 is connect with lifting lug II 17 respectively, and the other end is connected with corresponding lifting lug III respectively.The jack 5 pulls
Cucurbit is a kind of using Manual hoisting tool simple, easy to carry, makes the lifting of steel pipe truss 1 to expire by dropping bangle item
The needs of high altitude operation of the foot to operation steel box-girder apart from ground different height.
The hoist engine 6 is winch, is the light and small heavy-duty hoisting equipment with the promotion of reel winding wire ropes or traction, volume
It raises after machine connect with movable hanging frame, starts hoist engine, so that idler wheel rolls on steel box-girder, to realize that draw operations are flat
Platform is vertically moved to operation steel box-girder.
2 lower end of mobile jib is equipped with ring flange I, and the upper end of connection platform sling 15 is equipped with ring flange II corresponding with ring flange I,
Ring flange I is fixedly connected with ring flange II by high-strength bolt.
Adjusting rod 3 is equipped between the mobile jib 2 and connection platform sling 15, it is right with ring flange I that the upper end of the adjusting rod 3 is equipped with
The ring flange III answered, lower end are equipped with ring flange IV corresponding with ring flange II, the ring flange I and ring flange III, ring flange II
It is fixedly connected by high-strength bolt with ring flange IV.In this way when the height of operation steel box-girder itself not necessarily when, so that it may
The adjusting rod for selecting different size, can thus lengthen the mobile jib of movable hanging frame, enable movable hanging frame and steel pipe
Truss is fixedly connected, to meet the high altitude operation to operation steel box-girder of different height.
Two attachment beams 4, the cross bar of one end of every attachment beam 4 and a wherein F shape bracket are equipped between two movable hanging frames
Connection, the other end are connect with the other side and with the cross bar of the symmetrical F shape bracket of F shape bracket.Attachment beam uses in the present embodiment
Square steel tube production, is located to the movable hanging frame at left and right sides of operation steel box-girder for tensing, prevents because of operating platform both ends stress
Unevenly phenomenon of toppling.
The branch pipe of the steel pipe truss includes straight tube and inclined tube, and adjacent two straight tube and adjacent two supervisor form rectangle,
Inclined tube is arranged along the diagonal line of rectangle, and the distance between adjacent two straight tube is less than or equal to 1m.High-altitude is carried out in operator in this way
In mechanism, enough support strengths can be provided to operator and the power tool being placed on above, ensure safety.
The building method of bridge steel box girder high altitude operation operating platform, the building method are to mentioned-above bridge steel box
Deck-molding idle job operating platform is built, specifically includes the following steps:
(1) after being on the ground fixedly connected with two attachment beams with two movable hanging frames respectively, steel case is lifted into truck crane
On back plate, so that the idler wheel of movable hanging frame is placed on the upper surface of steel box-girder top plate, mobile jib is located at the left and right sides of steel box-girder
And it is hanging；
(2) jack one end is winded up with steel pipe truss two is responsible for the lifting lug II of upper surface and connect, the other end and corresponding steel box-girder bottom
The lifting lug III of plate lower surface connects, and so completes the installation of four jacks, all jacks is then dropped, so that steel pipe truss reaches
Working depth；
(3) the wind up lifting lug I of supervisor of the connection platform sling and steel pipe truss of movable hanging frame mobile jib lower end is connected using pin shaft,
And then movable hanging frame mobile jib and steel pipe truss are connected；
(4) two hoist engines are fixed on to operation steel box-girder cover top surface construction direction of advance one end and positioned at the end or so
Two sides, every hoist engine are simultaneously connected with corresponding movable hanging frame by wirerope respectively, the tension of starting hoist engine, winding steel wire
Rope so that the idler wheel on movable hanging frame be pulled to rotate, and then realizes that whole operation platform is mobile, completes to make the high-altitude of steel box-girder
Industry.
A set of operating platform once continuously can carry out high altitude operation to the steel box-girder between two bridge piers, will after to be done
Operating platform is moved to the steel box-girder between lower two bridge piers, and during this, hoist engine can be remained stationary, moving operation
The other equipment of platform, while in order to improve working efficiency, operating platform can be covered more, operation is carried out to steel box-girder simultaneously.Into
Before row high altitude operation, it can be laid with bamboo springboard etc. in the plane of winding up where pipe of steel pipe truss two, be conducive to operator station in this way
Equipment, tool etc., are then lifted on steel pipe truss with truck crane by vertical and placement power tool again.Carrying out high altitude operation
When, to prevent roller-coaster, can be solved in one backing plate of idler wheel underlay.
Finally, it should be noted that the above embodiment of the present invention is only example to illustrate the invention, and it is not
It is the restriction to embodiment of the present invention.For those of ordinary skill in the art, on the basis of the above description also
Other various forms of variations and variation can be made.Here all embodiments can not be exhaustive.It is all to belong to this
The technical solution changes and variations that derived from of invention are still in the scope of protection of the present invention.
Claims (6)
1. bridge steel box girder high altitude operation operating platform, which is characterized in that including steel pipe truss, two movable hanging frames, two volumes
Raise machine and four jacks, the steel pipe truss is rectangular parallelepiped structure, You Lianggen wind up supervisor, two lower edges are responsible for and several branch pipes
It constitutes, the length of steel pipe truss is greater than to operation steel box-girder maximum width；
Described two movable hanging frames to the longitudinally central line of operation steel box-girder as symmetry axis to be symmetricly set on to operation steel box-girder
The left and right sides, each movable hanging frame are made of two F shape brackets and several connecting rods, and the F shape bracket of two movable hanging frames is set in opposite directions
It sets, each F shape bracket is made of mobile jib and two cross bars, and the mobile jib is vertically arranged, and two cross bars are set in parallel in mobile jib up and down
Top and vertical with mobile jib passes through company between two F shape brackets of each movable hanging frame wherein the cross bar of top is located at mobile jib top
Extension bar is connected and fixed and horizontal distance between two F shape brackets is corresponding with the width of steel pipe truss；In each two cross bar of F shape bracket
Between be equipped with two vertical bars, two vertical bars are vertical with two cross bars, and every vertical bar lower end extends downwardly and be lower than lower section cross bar, every erect
The lower end that bar extends downwardly is equipped with idler wheel；Two movable hanging frames are mounted on by idler wheel to operation steel box-girder cover top surface and can
It is vertically moved along to operation steel box-girder；
Two of the steel pipe truss, which wind up, to be responsible for upper surface and is respectively equipped with lifting lug corresponding with every mobile jib of two movable hanging frames
I, every mobile jib lower end is equipped with the connection platform sling matched with corresponding lifting lug I, connection platform sling and lifting lug I and connects by the way that pin shaft is fixed
It connects；
One end to operation steel box-girder cover top surface longitudinal direction is arranged in two hoist engine, and passes through wirerope and movable hanging frame
Connection；Corresponding steel pipe truss two, which winds up, below to operation steel box-girder bottom plate is responsible for upper surface and is respectively provided with two lifting lugs II, corresponding
Ground, to operation steel box-girder lower surface of base plate be equipped with the one-to-one lifting lug III of lifting lug II, four jacks are wherein
One end is connect with lifting lug II respectively, and the other end is connected with corresponding lifting lug III respectively.
2. bridge steel box girder high altitude operation operating platform according to claim 1, which is characterized in that the mobile jib lower end is set
There is ring flange I, the upper end for connecting platform sling is equipped with ring flange II corresponding with ring flange I, and ring flange I and ring flange II pass through screw thread
Fastener is fixedly connected.
3. bridge steel box girder high altitude operation operating platform according to claim 2, which is characterized in that the mobile jib with connect
Adjusting rod is equipped between platform sling, the upper end of the adjusting rod is equipped with ring flange III corresponding with ring flange I, and lower end is equipped with and flange
The corresponding ring flange IV of disk II, the ring flange I and ring flange III, ring flange II and ring flange IV are solid by threaded fastener
Fixed connection.
4. bridge steel box girder high altitude operation operating platform according to claim 1, which is characterized in that between two movable hanging frames
Equipped with two attachment beams, one end of every attachment beam is connect with the cross bar of a wherein F shape bracket, the other end and the other side and with this
The cross bar of the symmetrical F shape bracket of F shape bracket connects.
5. bridge steel box girder high altitude operation operating platform according to claim 1, which is characterized in that the steel pipe truss
Branch pipe includes straight tube and inclined tube, and adjacent two straight tube and adjacent two supervisor form rectangle, and inclined tube is arranged along the diagonal line of rectangle,
Distance between adjacent two straight tube is less than or equal to 1m.
6. the building method of bridge steel box girder high altitude operation operating platform, which is characterized in that this building method is to claim 4 institute
The bridge steel box girder high altitude operation operating platform stated is built, specifically includes the following steps:
(1) after being on the ground fixedly connected with two attachment beams with two movable hanging frames respectively, steel case is lifted into truck crane
On back plate, so that the idler wheel of movable hanging frame is placed on the upper surface of steel box-girder top plate, mobile jib is located at the left and right sides of steel box-girder
And it is hanging；
(2) jack one end is winded up with steel pipe truss two is responsible for the lifting lug II of upper surface and connect, the other end and corresponding steel box-girder bottom
The lifting lug III of plate lower surface connects, and so completes the installation of four jacks, all jacks is then dropped, so that steel pipe truss reaches
Working depth；
(3) the wind up lifting lug I of supervisor of the connection platform sling and steel pipe truss of movable hanging frame mobile jib lower end is connected using pin shaft,
And then movable hanging frame mobile jib and steel pipe truss are connected；
(4) two hoist engines are fixed on to operation steel box-girder cover top surface construction direction of advance one end and positioned at the end or so
Two sides, every hoist engine are simultaneously connected with corresponding movable hanging frame by wirerope respectively, the tension of starting hoist engine, winding steel wire
Rope so that the idler wheel on movable hanging frame be pulled to rotate, and then realizes that whole operation platform is mobile, and the high-altitude for completing steel box-girder is made
Industry.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110820579A (en) * | 2019-11-15 | 2020-02-21 | 广州市市政集团有限公司 | Construction method based on movable steel box girder road-crossing construction working platform |
| CN113338604A (en) * | 2021-06-15 | 2021-09-03 | 中国二十二冶集团有限公司 | Operating platform for high-altitude cantilever steel pipe truss construction and implementation method |
| CN114481862A (en) * | 2022-01-06 | 2022-05-13 | 中国五冶集团有限公司 | Movable truss device and construction process |
| CN114737480A (en) * | 2022-03-17 | 2022-07-12 | 中铁九桥工程有限公司 | Multifunctional offshore steel box girder construction platform |
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| 李国豪等: "《中国土木建筑百科辞典》", 中国建筑工业出版社, pages: 437 - 440 * |
| 李国豪等: "《电梯安装维修与保养安全技术》", 30 June 2011, 安徽科学技术出版社, pages: 181 - 185 * |
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| CN110820579A (en) * | 2019-11-15 | 2020-02-21 | 广州市市政集团有限公司 | Construction method based on movable steel box girder road-crossing construction working platform |
| CN113338604A (en) * | 2021-06-15 | 2021-09-03 | 中国二十二冶集团有限公司 | Operating platform for high-altitude cantilever steel pipe truss construction and implementation method |
| CN114481862A (en) * | 2022-01-06 | 2022-05-13 | 中国五冶集团有限公司 | Movable truss device and construction process |
| CN114737480A (en) * | 2022-03-17 | 2022-07-12 | 中铁九桥工程有限公司 | Multifunctional offshore steel box girder construction platform |
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