CN109322252A - Interim matching, fixed structure and method for Large-span Steel Box Beam free cantilever erection - Google Patents
Interim matching, fixed structure and method for Large-span Steel Box Beam free cantilever erection Download PDFInfo
- Publication number
- CN109322252A CN109322252A CN201811202511.6A CN201811202511A CN109322252A CN 109322252 A CN109322252 A CN 109322252A CN 201811202511 A CN201811202511 A CN 201811202511A CN 109322252 A CN109322252 A CN 109322252A
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- Prior art keywords
- steel box
- bracket
- girder
- tooling
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/10—Cantilevered erection
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The present invention relates to a kind of interim matching, fixed structure and methods for Large-span Steel Box Beam free cantilever erection, the structure includes tooling, steel box-girder, " bracket ", tooling is respectively welded on the outside of the top plate of two sections of steel box-girders, drawing is connected by several Screw arbor with nut at both-ends between two toolings, be respectively welded on the inside of the bottom plate of two sections of steel box-girders " bracket ", under " bracket ", and upper " bracket " under " bracket " in two sections of steel box-girders splicings above and below overlap and shelve.The present invention has many advantages, such as economic, practical, quick, efficient, accurate, reusable, specific manifestation are as follows: accelerates the speed of steel box-girder floating jib section installation, improves the splicing accuracy of beam section, keeps steel box-girder smaller, more attractive at bridge line style deviation；Reduce crane barge to the holding time of navigable river；It recycles, reduces measure cost.
Description
Technical field
The present invention relates to it is a kind of matched for assembled interim of steel box girder cantilever, fixed structure, be particularly suitable for anxious curve,
Hyperbola, Large-span Steel Box Beam are constructed across quick, the accurate free cantilever erection such as river, road.
Background technique
Shanghai City north transverse passage-way new construction I Biao Beihong road overpass mainline crosses over Suzhou River, and span reaches 153m, is designed as double
Curve, single box single chamber steel box-girder construction；Construction is using cantilever+big segment closure assembling process.
It due to cantilever segment longer (10~14m of section length), heavier (most heavy 90t), and is curve shape, so to cantilever
Section between temporarily matching, fixation it is more demanding, it is necessary to be provided simultaneously with the mechanical characteristics such as shearing resistance, bending resistance, resistance to compression, antitorque.
Traditional code plate is used temporarily to be matched, fixed using between the steel box girder segment of Support Method installation, but for the cantilever
Segment only simply uses code plate, it is difficult to guarantee the precision of steel box girder assembling.
It finds a kind of not only economical, convenient and practical but also has innovative interim matching, fixation this moment imperative.
Summary of the invention
The purpose of the present invention is to solve large span, anxious curve, rapid, the accurate free cantilever erections of hyperbolic steel box beam
Technical problem, and a set of interim matching, fixed structure and the method assembled for steel box girder cantilever designed.
The technical scheme is that a kind of for the interim matching of Large-span Steel Box Beam free cantilever erection, fixed structure, packet
Tooling, steel box-girder, " bracket " are included, tooling is respectively welded on the outside of the top plate of two sections of steel box-girders, it is several right to pass through between two toolings
Draw screw rod to connect to drawing, be respectively welded on the inside of the bottom plate of two sections of steel box-girders " bracket ", under " bracket ", and upper " bracket " and under
" bracket " overlap joint is shelved up and down in two sections of steel box-girder splicings.
Further, it is opened in each tooling there are four Φ 40mm bolt hole, passes through four Φ 36mm Screw arbor with nut at both-ends between tooling
It is connected to drawing；The tension of every Screw arbor with nut at both-ends is 28t, shearing resistance 17t.
Further, upper " bracket " and under " bracket " overlap joint lay-down location level, perpendicular up and down in two sections of steel box-girders splicings
To interface there are the gap of 2cm, gap adjusts the elevation and plan-position of two sections of steel box-girders by pad sheet metal.
A kind of interim matching for Large-span Steel Box Beam free cantilever erection, fixed structure construction method, including following step
It is rapid:
(1) tooling, upper " bracket ", under " bracket ", the single component processing and fabricating of Screw arbor with nut at both-ends and steel box-girder processing system
Make；
(2) tooling, upper " bracket ", under after " bracket " acceptance(check), be accurately positioned, and be welded to steel box-girder top, bottom
On plate；
(3) in construction site, the boom segments of a upper steel box-girder carry out down after elevation, main line, camber retest-ok
The assembly of the boom segments of one steel box-girder；
(4) boom segments of steel box-girder are hung to assembled position, boom segments Primary Location by live crane barge；
(5) " bracket " on steel box-girder Mosaic face, under " bracket " dock, worn between tooling to drawing pull rod；
(6) it is finely tuned by loop wheel machine, Screw arbor with nut at both-ends is adjusted, and upper " bracket " level, vertical interface add between " bracket " under
It welds sheet metal to adjust, realizes the accurate positioning of the boom segments of steel box-girder；
(7) groove penetration welds between the beam body of steel box-girder, and crane barge pine hook is withdrawn from the arena after the completion of backing welding；
(8) weld seam all complete by welding, and Screw arbor with nut at both-ends is removed, tooling, upper " bracket ", under " bracket " cut off；
(9) boom segments for successively carrying out next segment steel case are assembled.
Beneficial achievement of the invention is:
(1) the problems such as conventional code plate welding quantity is more, intensity is low, adjustment is inconvenient, splicing locating periodically is long is solved；
(2) present invention is repeatable is recycled, and has saved measure cost；
(3) present invention realizes quick, the accurate construction of steel box girder cantilever assembly, and it is partially worse small, more beautiful to make into bridge line style
It sees；
(4) rapid free cantilever erection, reducing holding time of the crane barge to navigation channel, (large-scale self-propelled loop wheel machine is to social road
Occupancy), to society, traffic influence substantially reduce.
Detailed description of the invention
Fig. 1 is interim matching of the invention, fixed structure general arrangement；
Fig. 2 is tool structure figure；
(a) main view, (b) A-A cross-sectional view, (c) B-B cross-sectional view, (d) C-C cross-sectional view；
Fig. 3 be under " bracket " structural map；
(a) main view, (b) A-A cross-sectional view, (c) B-B cross-sectional view,
Fig. 4 is upper " bracket " structural map；
(a) main view, (b) A-A cross-sectional view, (c) B-B cross-sectional view, (d) C-C cross-sectional view.
Specific embodiment
With reference to the accompanying drawing with northern rainbow grade separation specific example, the embodiment for patent that the present invention is further explained.
As shown in Figures 1 to 4, the interim matching assembled for steel box girder cantilever of the invention, fixed structure, including tooling
1, split bolt 2, under " bracket " 3, upper " bracket " 4.
(1) tooling 1 is welded on the outside of the top plate of the first and second steel box-girder 5,6, and is arranged symmetrically in steel box-girder top plate piece two
Side；
(2) as opened shown in Fig. 2 (a)~(d) in each tooling 1, there are four Φ 40mm bolt hole, the first and second steel box-girders 5,6
Tooling 1 by four 2 pairs of Φ 36mm Screw arbor with nut at both-ends drawing, each 2 tension 28t of screw rod, shearing resistance 17t；
(3) under " bracket " 3 (see Fig. 3 (a)~(c)) and upper " bracket " 4 be respectively welded at first (see Fig. 4 (a)~(d)),
On the inside of the bottom plate of two steel box-girders 5,6, and it is arranged symmetrically in the two sides of box beam bottom plate piece；
(4) " bracket " 4 on, under " bracket " 3 overlap joint is shelved up and down in steel box-girder splicing, horizontal, vertical interface stays
There is the gap of 2cm, gap adjusts elevation and the plan-position of steel box-girder by pad sheet metal；(5) tooling 1, upper " bracket " 4,
Under " bracket " 3 be welded using 20mm thickness Q345 steel plate, need to together with steel box-girder processing and fabricating, be welded as a whole；
(6) steel box girder assembling and weld after the completion of, this measure is cut off in beam body, subsequent reuse.
Tooling 1, upper " bracket " 4, under " bracket " 3 be all made of the welding of 20mm thickness Q345 steel plate, weld seam form is between steel plate
Twin fillet wolt；Tooling 1, upper " bracket " 4, under the welding of " bracket " 3 complete and after acceptance(check), can weld with steel box-girder, weldering
Slit formula is also twin fillet wolt.Tooling 1, upper " bracket " 4, under " bracket " 3 must be accurately positioned with steel box-girder welding position, with
Guarantee subsequent steel box girder assembling precision.
Concrete construction method of the invention:
(1) tooling, upper " bracket ", under " bracket ", the single component processing and fabricating of Screw arbor with nut at both-ends, steel box-girder processing and fabricating；
(2) tooling, upper " bracket ", under after " bracket " acceptance(check), be accurately positioned, and be welded to steel box-girder top, bottom
Plate；
(3) steel box-girder is qualified through factory inspection and acceptance, site acceptance；
(4) in construction site, the boom segments of a upper steel box-girder carry out down after elevation, main line, camber retest-ok
The assembly of the boom segments of one steel box-girder；
(5) cantilever segment is hung to assembled position, preliminary (thick) positioning of boom segments by live crane barge (loop wheel machine)；
(6) " bracket " on steel box-girder Mosaic face, under " bracket " dock, worn between tooling to drawing pull rod；
(7) it is finely tuned by loop wheel machine, Screw arbor with nut at both-ends is adjusted, and upper " bracket " level, vertical interface add between " bracket " under
The a series of measures such as sheet metal adjusting are welded, realize the accurate positioning of steel box girder cantilever segment；
(8) groove penetration welds between the beam body of steel box-girder, and crane barge pine hook is withdrawn from the arena after the completion of backing welding；
(9) weld seam all complete by welding, and Screw arbor with nut at both-ends is removed, tooling, upper " bracket ", under " bracket " cut off；
(10) next segment steel box girder cantilever section assembling is successively carried out.
Claims (4)
1. a kind of for the interim matching of Large-span Steel Box Beam free cantilever erection, fixed structure, including tooling, steel box-girder, " bracket ",
It is characterized by: tooling is respectively welded on the outside of the top plate of two sections of steel box-girders, by several Screw arbor with nut at both-ends to drawing between two toolings
Connection, be respectively welded on the inside of the bottom plate of two sections of steel box-girders " bracket ", under " bracket ", and upper " bracket " and under " bracket " at two sections
Overlap joint is shelved up and down in steel box-girder splicing.
2. according to claim 1 for the interim matching of Large-span Steel Box Beam free cantilever erection, fixed structure, feature exists
In: it is opened in each tooling there are four Φ 40mm bolt hole, is connected by four Φ 36mm Screw arbor with nut at both-ends to drawing between tooling；Every
The tension of Screw arbor with nut at both-ends is 28t, shearing resistance 17t.
3. according to claim 1 for the interim matching of Large-span Steel Box Beam free cantilever erection, fixed structure, feature exists
In: upper " bracket " and under " bracket " overlap joint lay-down location level, vertical interface stay up and down in two sections of steel box-girders splicings
There is the gap of 2cm, gap adjusts the elevation and plan-position of two sections of steel box-girders by pad sheet metal.
4. a kind of using any interim matching for being used for Large-span Steel Box Beam free cantilever erection of claim 1-3, fixed knot
The construction method of structure, which comprises the following steps:
(1) tooling, upper " bracket ", under " bracket ", the single component processing and fabricating of Screw arbor with nut at both-ends and steel box-girder processing and fabricating；
(2) tooling, upper " bracket ", under after " bracket " acceptance(check), be accurately positioned, and be welded to steel box-girder top, on bottom plate；
(3) in construction site, the boom segments of a upper steel box-girder carry out next steel after elevation, main line, camber retest-ok
The assembly of the boom segments of box beam；
(4) boom segments of steel box-girder are hung to assembled position, boom segments Primary Location by live crane barge；
(5) " bracket " on steel box-girder Mosaic face, under " bracket " dock, worn between tooling to drawing pull rod；
(6) finely tuned by loop wheel machine, Screw arbor with nut at both-ends is adjusted, upper " bracket " under between " bracket " level, vertical interface be welded with it is thin
Steel plate is adjusted, and realizes the accurate positioning of the boom segments of steel box-girder；
(7) groove penetration welds between the beam body of steel box-girder, and crane barge pine hook is withdrawn from the arena after the completion of backing welding；
(8) weld seam all complete by welding, and Screw arbor with nut at both-ends is removed, tooling, upper " bracket ", under " bracket " cut off；
(9) next segment steel box girder cantilever section assembling is successively carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811202511.6A CN109322252A (en) | 2018-10-16 | 2018-10-16 | Interim matching, fixed structure and method for Large-span Steel Box Beam free cantilever erection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811202511.6A CN109322252A (en) | 2018-10-16 | 2018-10-16 | Interim matching, fixed structure and method for Large-span Steel Box Beam free cantilever erection |
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| Publication Number | Publication Date |
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| CN109322252A true CN109322252A (en) | 2019-02-12 |
Family
ID=65262701
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811202511.6A Pending CN109322252A (en) | 2018-10-16 | 2018-10-16 | Interim matching, fixed structure and method for Large-span Steel Box Beam free cantilever erection |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109898653A (en) * | 2019-03-30 | 2019-06-18 | 中国二十二冶集团有限公司 | Box beam joint connection in site method |
| CN111021256A (en) * | 2019-12-19 | 2020-04-17 | 中建六局土木工程有限公司 | Construction method for hoisting heavy-tonnage high-precision steel box girder |
| CN111042001A (en) * | 2020-01-16 | 2020-04-21 | 中建七局安装工程有限公司 | Temporary anchoring support-free construction method for prefabricated section beam closure section |
| CN111172885A (en) * | 2020-01-19 | 2020-05-19 | 石岩 | Steel box girder butt joint detection assembly and butt joint method |
| CN112095479A (en) * | 2020-09-22 | 2020-12-18 | 马亮 | Bridge translation butt joint positioner |
| CN114351598A (en) * | 2022-01-26 | 2022-04-15 | 中铁二十二局集团第三工程有限公司 | Construction method for hoisting steel box girder in confined space of complex navigation water area |
| CN114369993A (en) * | 2022-03-04 | 2022-04-19 | 中铁长安重工有限公司 | Steel box girder large section lap joint installation device and method |
| CN114960457A (en) * | 2022-06-30 | 2022-08-30 | 中国一冶集团有限公司 | Split type steel bridge hoisting horizontal interval fine adjustment device and construction method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109898653A (en) * | 2019-03-30 | 2019-06-18 | 中国二十二冶集团有限公司 | Box beam joint connection in site method |
| CN111021256A (en) * | 2019-12-19 | 2020-04-17 | 中建六局土木工程有限公司 | Construction method for hoisting heavy-tonnage high-precision steel box girder |
| CN111042001A (en) * | 2020-01-16 | 2020-04-21 | 中建七局安装工程有限公司 | Temporary anchoring support-free construction method for prefabricated section beam closure section |
| CN111042001B (en) * | 2020-01-16 | 2022-03-25 | 中建七局安装工程有限公司 | Temporary anchoring support-free construction method for prefabricated section beam closure section |
| CN111172885A (en) * | 2020-01-19 | 2020-05-19 | 石岩 | Steel box girder butt joint detection assembly and butt joint method |
| CN112095479A (en) * | 2020-09-22 | 2020-12-18 | 马亮 | Bridge translation butt joint positioner |
| CN114351598A (en) * | 2022-01-26 | 2022-04-15 | 中铁二十二局集团第三工程有限公司 | Construction method for hoisting steel box girder in confined space of complex navigation water area |
| CN114351598B (en) * | 2022-01-26 | 2023-09-22 | 中铁二十二局集团第三工程有限公司 | Hoisting construction method for steel box girder in limited space of complex navigable water area |
| CN114369993A (en) * | 2022-03-04 | 2022-04-19 | 中铁长安重工有限公司 | Steel box girder large section lap joint installation device and method |
| CN114960457A (en) * | 2022-06-30 | 2022-08-30 | 中国一冶集团有限公司 | Split type steel bridge hoisting horizontal interval fine adjustment device and construction method |
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