CN209538044U - A kind of arch rib of long-span steel arch bridge assembly falsework - Google Patents

A kind of arch rib of long-span steel arch bridge assembly falsework Download PDF

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Publication number
CN209538044U
CN209538044U CN201920045768.9U CN201920045768U CN209538044U CN 209538044 U CN209538044 U CN 209538044U CN 201920045768 U CN201920045768 U CN 201920045768U CN 209538044 U CN209538044 U CN 209538044U
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bridge
support frame
arch rib
upright bar
column
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CN201920045768.9U
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丁杰
曾勇
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Hunan Jin Haigang Construction Co Ltd
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Hunan Jin Haigang Construction Co Ltd
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Abstract

The utility model provides a kind of arch rib of long-span steel arch bridge assembly falsework, including upright bar and lacing, lacing is welded at left and right sides of column, upright bar is formed with column by the combination of lattice with lacing, the column that upright bar and lacing are composed is provided with 16 groups altogether, and X between column, Y direction is respectively arranged with a pair of suitable bridge and contacts truss to connection truss and direction across bridge, application and production suitable for construction building structure, compared to traditional arch rib assembly support frame, this kind of temporary support construction is completed and in arch rib arching and after stablizing, it is unloaded step by step by jack, separate support frame with arch rib, support frame is finally removed again, it must follow first to fill in support frame demolishing process and tear open afterwards, the principle first torn open is filled afterwards gradually to remove, transformation platform upper end arch rib is connected to jack pair, it can be square Just construction personnel accurately adjusts the absolute altitude of each segment arch rib, improves the installation accuracy of arch rib.

Description

A kind of arch rib of long-span steel arch bridge assembly falsework
Technical field
The utility model relates to construction building technical field of structures, specially a kind of arch rib of long-span steel arch bridge assembly Falsework.
Background technique
With the development of China's cause of modernization, the construction of the large bridges such as domestic all kinds of bridge spanning the seas, river-spanning bridge is got over Come more, these Longspan Bridges are steel structure bridge mostly, wherein steel arch bridge be used as across existing highway, railway, mountain valley, The type of bridge in river has obtained a large amount of application.
With emerging in multitude for steel construction arch bridge, various construction methods are also applied therewith, for example cantilever is spelled Dress method, branch frame in bulk method, stayed knotting method and the assembled method of jacking etc..But for easily just more than the steel construction of hundred meters of spans Most of construction method is all limited to the factors such as the environment of construction site, place range size for arch bridge.Currently, most widely used General or using setting up interim transverse girder between arch rib frame, the method for high altitude bulk carries out the installation of arch rib of long-span steel arch bridge, but It is for many long-span steel arch bridges, span reaches rice up to a hundred, and arch rib weight reaches thousands of tons of, and arch rib rise reaches tens of Rice, can encounter following point in high altitude bulk:
1, arch rib and stull weight are big, high to the structural bearing force request of temporary support;
2, arch rib rise is higher, its too high Out-of-plane Stability of support frame scaffolding height is difficult to ensure;
3, truss camber, lateral plane degree, absolute altitude, errors of centration are difficult to control.
Utility model content
(1) the technical issues of solving
In view of the deficiencies of the prior art, the utility model provides a kind of arch rib of long-span steel arch bridge assembly and temporarily props up Frame has reliable structure, simple installation, guarantees construction safety, facilitates the advantages that carrying out high accuracy install arch rib solve existing Arch rib assembly supporting frame construction difficulty is high, structural soundness is poor, arch rib splicing accuracy is not high problem.
(2) technical solution
To realize reliable above structure, simple installation, guarantee construction safety, facilitating the mesh such as progress high accuracy install arch rib , the utility model provides the following technical solutions: a kind of arch rib of long-span steel arch bridge assembly falsework, including upright bar with Lacing, the lacing are welded at left and right sides of upright bar, and the upright bar is formed with column by the combination of lattice with lacing, The column that the upright bar and lacing are composed is provided with X, Y direction between 16 groups and column altogether and is respectively arranged with a pair Truss is contacted to connection truss and direction across bridge along bridge, it is long to be arranged with multiple groups in the pillar construction that the upright bar is composed with lacing Consistent node section is spent, is fixed by way of being welded in bolt and fixing between the upright bar node section, the lacing is logical The setting of oblique diagonal form is crossed to be connected and fixed at each node section of upright bar;The suitable bridge joins to connection truss and direction across bridge It is truss by the rectangular frame structure of column-type, the suitable bridge contacts truss to connection truss and direction across bridge and passes through bolt pair The mode connect is fixed with upright bar;The column top that the upright bar and lacing are constituted is provided with transformation platform, the transformation platform It is made of flat surface top support frame crossbeam and top support frame stringer, the top support frame crossbeam is along bridge to being fixed on each column At the top of upright bar, the top support frame stringer direction across bridge is fixed on top support frame crossbeam, the setting of top support frame stringer upper end There is jack, jack bearing beam is equipped between the jack and top support frame stringer, the jack left and right sides is symmetrical It is provided with the interim bearing beam of a pair of of arch rib, direction across bridge is equipped with channel steel between the top support frame crossbeam, and the channel steel and top are held in the palm Frame crossbeam is fixedly connected in such a way that bolt docks, and the channel steel upper surface is equipped with steel mesh piece.
Further advantage, the top support frame crossbeam, top support frame stringer, jack bearing beam and the interim bearing beam of arch rib are equal For Two bors d's oeuveres or Three kinds of hors d'oeuvres I-steel.
Further advantage, between the column that the upright bar and lacing are constituted by along bridge to contacting truss and direction across bridge contacts Truss connection, and it is all made of space truss form to the connection that connection truss and direction across bridge contact truss and column along bridge, and Upright bar, column bottom end are fixedly connected with job location body frame when installation.
Further advantage, the jack structure type are screw jack, and jack upper end and arch rib when installing Lower surface fits closely.
Further advantage, it is horizontal that the channel steel is uniformly layed in two sides top support frame in such a way that direction across bridge, spacing is 650mm Lower flange of girder edge position, and channel steel upper surface is fixedly connected with steel mesh piece.
(3) beneficial effect
Compared with prior art, the utility model provides a kind of arch rib of long-span steel arch bridge assembly falsework, Have it is following the utility model has the advantages that
1, this kind of arch rib of long-span steel arch bridge assembly falsework, takes dress in work progress in the early stage with upright bar lacing Made of bracket in column and construction site install and fix, and all parts such as transformation platform upper end jack are passed through into top Bracket is horizontal, stringer docks fixation with rod end, to complete building for support frame, when carrying out arch rib assembling construction, by every side 9 segment production of arch rib point are marched into the arena, and pass through truck crane afterwards for the rib-hoisting of each segment to the corresponding arch rib of installed position On interim bearing beam, it will be fixed temporarily between the arch rib of each segment and by connecting plate between two sides arch rib and stull to guarantee It is stablized, and then site operation personnel are finely adjusted by the arch rib absolute altitude of each segment of jack pair, are corrected, then are welded into Arch completes arch rib and constructs in assembly, and compared to traditional arch rib assembly support frame, this kind of temporary support has been constructed At and arch rib arching and after stablizing, is unloaded step by step by jack, separate support frame with arch rib, finally remove again Support frame must be followed first to fill and be torn open afterwards in support frame demolishing process, filled the principle first torn open afterwards and gradually removed, be connected to jack pair Transformation platform upper end arch rib can facilitate construction personnel accurately to adjust the absolute altitude of each segment arch rib, improve the installation of arch rib Precision;
2, this kind of arch rib assembly temporary support simultaneously, by the lattice column being made of upright bar and lacing, and The fixed form of each segment of its column also subtracts while ensure that firm support frame structure, construction safety and construction quality The investment for having lacked large-scale hoisting machinery equipment reduces construction cost, and assembly, fine tuning, correction, the welding of each segment arch rib It is operated on the transformation platform on falsework platform with processes such as corrections, it is ensured that safety saves artificial, falsework As an Auxiliary support, the splicing accuracy of control arch rib is not only contributed in this project, also ensures that arch rib was being installed Overall stability in journey provides reference for similar engineering;
3 and in the construction process, construction personnel is each by screw type jack pair arch rib on transformation platform When segment is finely adjusted, guarantee that platform is firm in such a way that channel steel is fixed on top support frame crossbeam, while operating personnel is safe, It is avoided in work progress by steel mesh piece that place mat uniform on channel steel has, construction material etc. is fallen between rig bracket crossbeam To construction site, falling object from high altitude is avoided and has threatened to construction site staff, further ensured applying for support frame Work safety.
Detailed description of the invention
Fig. 1 is the main view of the utility model;
Fig. 2 is the side view of the utility model;
Fig. 3 is the main view of the utility model conversion platform;
Fig. 4 is the left view of the utility model conversion platform.
In figure: 1 upright bar, 2 lacings, 3 contact truss, 6 top support frames to connection truss, 4 transformation platforms, 5 direction across bridge along bridge Crossbeam, 7 top support frame stringers, 8 jack, 9 jack bearing beams, the interim bearing beam of 10 arch ribs, 11 channel steels, 12 steel mesh pieces.
Specific embodiment
Described embodiment that the following will be combined with the drawings in the embodiments of the present invention, is only the utility model one Divide embodiment, instead of all the embodiments.
Please refer to Fig. 1-4, a kind of arch rib of long-span steel arch bridge assembly falsework, including upright bar 1 and lacing 2, institute It states lacing 2 and is welded in 1 left and right sides of upright bar, the upright bar 1 is formed with column by the combination of lattice with lacing 2, institute It states upright bar 1 and column that lacing 2 is composed is provided with X, Y direction between 16 groups and column altogether and is respectively arranged with a pair Truss 5 is contacted to connection truss 3 and direction across bridge along bridge, is arranged in the pillar construction that the upright bar 1 is composed with lacing 2 more Node section consistent in length is organized, is fixed by way of being welded in bolt and fixing between 1 node section of upright bar, it is described to sew Item 2 is connected and fixed at each node section of upright bar 1 by the setting of oblique diagonal form;The suitable bridge to connection truss 3 with Direction across bridge contacts truss 5 by the rectangular frame structure of column-type, and the suitable bridge contacts truss 5 to connection truss 3 and direction across bridge It is fixed with upright bar 1 in such a way that bolt docks, pass through upright bar 1 in installation process and lacing 2 is in the mounting means of lattice Construct column, fixation is docked with the body frame that construction site is used for arch rib erection by upright bar 1 in column bottom end, while passing through every group Upright bar 1 carrys out stacked in multi-layers building stem height with lacing 2 with the dress of taking of sectional type, and passes through direction across bridge and contact truss 5 and Shun Qiao Every group of column is connected and fixed with the structure of rectangular box formula to connection truss 3;The column top that the upright bar 1 is constituted with lacing 2 End is provided with transformation platform 4, and the transformation platform 4 constitutes flat surface by top support frame crossbeam 6 and top support frame stringer 7, institute Top support frame crossbeam 6 is stated along bridge to 1 top of upright bar for being fixed on each column, 7 direction across bridge of top support frame stringer is fixed on On top support frame crossbeam 6,7 upper end of top support frame stringer is provided with jack 8, the jack 8 and top support frame stringer 7 Between be equipped with jack bearing beam 9, the interim bearing beam 10 of a pair of of arch rib, the top are symmetrically arranged at left and right sides of the jack 8 Direction across bridge is equipped with channel steel 11 between portion's yoke crosstie 6, and the channel steel 11 is with top support frame crossbeam 6 in such a way that bolt docks It is fixedly connected, 11 upper surface of channel steel is equipped with steel mesh piece 12, after dress is taken in column completion, by the top in transformation platform 4 It is fixed at the top of yoke crosstie 6 and upright bar 1, and jack 8 is fixed by top support frame stringer 7 and the interim bearing beam 10 of arch rib, encircle When rib is installed, by truck crane by the rib-hoisting of each segment to the interim bearing beam 10 of the corresponding arch rib of installed position, incite somebody to action It is fixed temporarily between the arch rib of each segment and by connecting plate between two sides arch rib and stull to guarantee its stabilization, passes through thousand Jin pushes up bearing beam 9 to increase the Maximum Contact area of jack 8 Yu lower end top support frame stringer 7, thus when jack 8 is pressurized, With biggish contact surface by 8 load of jack by the conduction of the pretty space of jack bearing beam 9 to top support frame stringer 7, scene is applied Worker person can finely tune the arch rib height of each segment on transformation platform 4 by using jack 8, and that completes arch rib takes dress.
In conclusion the top support frame crossbeam 6, top support frame stringer 7, jack bearing beam 9 and the interim bearing beam of arch rib 10 be Two bors d's oeuveres or Three kinds of hors d'oeuvres I-steel, itself I-steel is ensured at light aspect, while with cancelled structure wind resistance Can be strong, convenient for taking dress the advantages of, support frame structure intensity is improved, while facilitating the installation of support frame.
Between the column that the upright bar 1 and lacing 2 are constituted by along bridge to contacting truss 3 and direction across bridge contacts truss 5 and connects It connects, and is all made of space truss form to the connection that connection truss 3 and direction across bridge contact truss 5 and column along bridge, and install When upright bar 1, column bottom end be fixedly connected with job location body frame, between lattice column by along bridge to connection 3 He of truss Direction across bridge contacts truss 5 and connects, and to guarantee the monolithic stability of transverse girder between arch rib frame, and contacts truss and uses space truss form, makes It has enough rigidity.
8 structure type of jack is screw jack 8, and 8 upper end of jack and arch rib lower surface are tight when installation Closely connected conjunction, is arranged jack 8 on top support frame stringer 7, and construction personnel can accurately adjust each segment arch on transformation platform The absolute altitude of rib improves the installation accuracy of arch rib.
The channel steel 11 is uniformly layed in 6 lower flange of two sides top support frame crossbeam in such a way that direction across bridge, spacing is 650mm Position, and 11 upper surface of channel steel is fixedly connected with steel mesh piece 12, by setting up for steel mesh piece 12, provides safety to construction personnel Reliable operation side, while being also avoided that falling object from high altitude threatens to lower section personnel.
The instrument wherein applied in the utility model:
The model JRR-2006 of jack;
1 upright bar used in above-described embodiment, 2 lacings, 3 contact purlin to connection truss, 4 transformation platforms, 5 direction across bridge along bridge Frame, 6 top support frame crossbeams, 7 top support frame stringers, 8 jack, 9 jack bearing beams, the interim bearing beam of 10 arch ribs, 11 channel steels, 12 steel Mesh sheet can be bought by market or private customization obtains.
Above-described embodiment is served only for that the utility model is further described, no to the specific descriptions of the utility model It can be interpreted as the restriction to scope of protection of the utility model, the technician of this field is according to the content pair of above-mentioned utility model The utility model is made some nonessential modifications and adaptations and is each fallen within the protection scope of the utility model.

Claims (5)

1. a kind of arch rib of long-span steel arch bridge assembly falsework, including upright bar (1) and lacing (2), lacing (2) weldering It is connected at left and right sides of upright bar (1), it is characterised in that: the upright bar (1) is formed with lacing (2) by the combination of lattice The column that column, the upright bar (1) and lacing (2) are composed is provided with X between 16 groups and column, Y direction difference altogether A pair of suitable bridge is provided with to contact truss (5) to connection truss (3) and direction across bridge, what the upright bar (1) was composed with lacing (2) It is arranged with multiple groups node section consistent in length in pillar construction, is fixed between upright bar (1) node section by being welded in bolt Mode be fixed, the lacing (2) is connected and fixed on upright bar (1) each node section by the setting of oblique diagonal form Place;The suitable bridge contacts truss (5) to connection truss (3) and direction across bridge and passes through the rectangular frame structure of column-type, the suitable bridge It contacts to connection truss (3) with direction across bridge and is fixed by way of truss (5) is docked bolt with upright bar (1);The upright bar (1) With lacing (2) constitute column top be provided with transformation platform (4), the transformation platform (4) by top support frame crossbeam (6) with Top support frame stringer (7) constitutes flat surface, and the top support frame crossbeam (6) is pushed up along bridge to the upright bar (1) for being fixed on each column Portion, top support frame stringer (7) direction across bridge are fixed on top support frame crossbeam (6), and top support frame stringer (7) upper end is set It is equipped with jack (8), is equipped with jack bearing beam (9) between the jack (8) and top support frame stringer (7), it is described very heavy It is symmetrically arranged with the interim bearing beam of a pair of of arch rib (10) at left and right sides of top (8), direction across bridge is installed between the top support frame crossbeam (6) Have channel steel (11), the channel steel (11) is fixedly connected by way of being docked with top support frame crossbeam (6) bolt, the channel steel (11) upper surface is equipped with steel mesh piece (12).
2. a kind of arch rib of long-span steel arch bridge assembly falsework according to claim 1, it is characterised in that: described Top support frame crossbeam (6), top support frame stringer (7), jack bearing beam (9) and the interim bearing beam of arch rib (10) are Two bors d's oeuveres or three Spell I-steel.
3. a kind of arch rib of long-span steel arch bridge assembly falsework according to claim 1, it is characterised in that: described By being connect along bridge to connection truss (3) and direction across bridge connection truss (5) between the column that upright bar (1) is constituted with lacing (2), and When being all made of space truss form to the connection that connection truss (3) and direction across bridge contact truss (5) and column along bridge, and installing Upright bar (1), column bottom end are fixedly connected with job location body frame.
4. a kind of arch rib of long-span steel arch bridge assembly falsework according to claim 1, it is characterised in that: described Jack (8) structure type is screw jack (8), and jack (8) upper end is fitted closely with arch rib lower surface when installation.
5. a kind of arch rib of long-span steel arch bridge assembly falsework according to claim 1, it is characterised in that: described Channel steel (11) is uniformly layed in two sides top support frame crossbeam (6) lower flange position in such a way that direction across bridge, spacing is 650mm, and Channel steel (11) upper surface is fixedly connected with steel mesh piece (12).
CN201920045768.9U 2019-01-11 2019-01-11 A kind of arch rib of long-span steel arch bridge assembly falsework Active CN209538044U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110205933A (en) * 2019-01-11 2019-09-06 湖南金海钢结构有限公司 A kind of arch rib of long-span steel arch bridge assembly falsework
CN113756203A (en) * 2021-09-27 2021-12-07 中铁十九局集团第五工程有限公司 Bridge construction process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110205933A (en) * 2019-01-11 2019-09-06 湖南金海钢结构有限公司 A kind of arch rib of long-span steel arch bridge assembly falsework
CN113756203A (en) * 2021-09-27 2021-12-07 中铁十九局集团第五工程有限公司 Bridge construction process

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