CN101324053A - Double line box girder downward mobile formwork bridge fabrication machine and construction method thereof - Google Patents
Double line box girder downward mobile formwork bridge fabrication machine and construction method thereof Download PDFInfo
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- CN101324053A CN101324053A CNA2008100299234A CN200810029923A CN101324053A CN 101324053 A CN101324053 A CN 101324053A CN A2008100299234 A CNA2008100299234 A CN A2008100299234A CN 200810029923 A CN200810029923 A CN 200810029923A CN 101324053 A CN101324053 A CN 101324053A
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Abstract
The invention discloses a downlink-typed movable formwork bridge fabrication machine used for dual-line box girders in passenger-dedicated line (PDL) of railway and a construction method thereof. The main beam of the bridge fabrication machine adopts two parallel groups of left and right main truss structures; the front end and the rear end of each group of main truss are respectively connected with a front guiding beam and a rear guiding beam; the upper sides between the two main trusses are fixed and connected by a plurality of sway bracings and the lower sides are connected with a plurality of lower carrying-pole beams; a beam-hoisting machine which can move along the longitudinal direction of the main truss is erected above the main truss; the two main trusses are supported on the two adjacent piers by a longitudinal and transverse slide carriage. The construction method of the invention adopts precast segmental girders in beam fields beside a bridge; concrete is cast in-situ after the segmental girders are hoisted in position so as to connect the beam wetly; the construction sequences of assembling the whole-cell box girder, stretching and drawing a prestressed tendon of the whole-cell box girder are carried out, thus realizing that dual-line simply supported continuous box girder is erected simultaneously. The bridge fabrication machine and the construction method of the invention have the outstanding advantages of large load bearing capability, synchronous erection of dual-line, precise controlling of the line shape, and saving the construction period, etc.
Description
Technical field
The present invention relates to the downward mobile formwork bridge fabrication machine and the job practices thereof of special line for passenger trains double line box girder.
Background technology
LONG-SPAN RAILWAY Line for Passenger Transportation concrete simple supported box beam load is big, needs two-wire to set up synchronously, and linear necessary precise control, and the construction period is short.Existing large span, large-tonnage bridge fabrication machine technology are that single line sets up, as are used for two-wire and set up, and then need at first build the line in the two-wire, build second line in the two-wire again.Its shortcoming is that single line changes two-wire, and overall structure need be done the part transformation of the way, and transformation of the way workload is big, and reinforces difficulty; Because the duration of two lines construction is inconsistent, concrete coagulates the phase difference, and the shrinkage and creep distortion of prestressed concrete is inharmonious, easily produces additional internal force at inside concrete, and case beam Linear Control difficulty; The supporting large-tonnage (100 tons) that provides is provided, hangs the ship that hangs waterborne of high 50m; Need to push up traversing 72.5cm at pier successively after the first line roof beam structure is established and just can reach design attitude, pier top, high-altitude large-tonnage is traversing, and security risk is big; Bridge fabrication machine need install and remove twice, and operation is relatively complicated; Duration is longer relatively.
Summary of the invention
The downward mobile formwork bridge fabrication machine and the job practices thereof that the purpose of this invention is to provide a kind of special line for passenger trains double line box girder, but two-wire set up synchronously, and linear precise control, the construction period is short.
For reaching above-mentioned purpose, the present invention adopts the bridge fabrication machine of following structure: the bridge fabrication machine girder adopt parallel about two groups of main truss structure, every group of main truss rear and front end is connected with forward and backward nose girder respectively; Upside is connected to a fixed by the multiple tracks horizontal-associate between two main trusses, and downside is connected with shoulder pole girder under the multiple tracks; Set up the main truss top can be along the bale handle loop wheel machine of the vertical traveling of main truss; Two main trusses are supported on adjacent two bridge piers by moving slide in length and breadth.
In order to guarantee that main truss has enough intensity and mounting or dismounting are convenient, described arbitrary group of main truss is the three truss structure, and be assembled by reassembling type military beam and self-control rod member.
Described bale handle loop wheel machine moving track is fixed on sheet upside in every group of main truss; Described bale handle loop wheel machine is a gantry crane, and two columns of gantry crane are erected at respectively on two moving tracks.
Described bridge fabrication machine advancing device is two continuous jack, and every jack is equipped with many steel strand.
The job practices of double line box girder downward mobile formwork bridge fabrication machine of the present invention is as follows:
A, at the fixing station that promotes of the adjacent two pier assembly units of the starting point of setting a roof beam in place, single group main truss and front and back nose girder promote by fixing that the station is whole to rise to the moving in length and breadth on the slide of adjacent two Dun Ding of the starting point of setting a roof beam in place behind spelling on the installation on ground platform; Horizontal-associate, following shoulder pole girder and bale handle loop wheel machine put in place by attached pier tower crane lifting and install;
B, prefabricated subsection beam are transported to bale handle loop wheel machine suspension centre below by the bridge floor flat car for transport of sills, and by the bale handle loop wheel machine each are lifted between adjacent twice shoulder pole girders of correspondence beam sections, and adjust to the design plane position;
After whole beam sections installations of C, same bridge opening, the wet seam reinforcing bar of welding, template are installed, prestressed bellows and reeving carries out the concrete cast; Apply prestressing force, stretch-draw, unloading and the demoulding, finish setting up of the first bridge opening beam sections;
D, main truss is dragged to default the moving in length and breadth on the slide of next bridge pier Dun Ding;
E, on the beam sections that construction finishes, lay the fortune beam orbit that passes through for beam transportation vehicle, repeat the step of B to E again, set up until whole bridge openings and finish;
F, at the fixing station that promotes of the adjacent two bridge pier assembly units of the terminal point of setting a roof beam in place, whole promote bridge fabrication machine list group main truss and transfer to set up bridge floor and decompose dismounting again.
Among the described step B, lifting puts in place the bale handle loop wheel machine to beam sections each successively by vertical order.
Among the described step C, the bale handle loop wheel machine carries out the concrete cast after retreating to the main truss rear again.Wet joint concrete reaches 85% o'clock of design strength and begins to apply prestressing force.
Among the described step D, by the dilatory main truss of bridge fabrication machine advancing device; Described bridge fabrication machine advancing device is two continuous jack that are equipped with many steel strand, and these two continuous jack are installed on the bridge pier in bridge fabrication machine the place ahead, by the dilatory two groups of main trusses reach of steel strand.
The present invention adopts the other beam of bridge field prefabricated subsection beam, the wet seam of cast-in-situ concrete behind the beam sections hoisted in position, and the sequence of construction of whole hole spelling, whole hole tensioned prestressing bar realizes setting up simultaneously two-wire freely-supported continuous box girder.The present invention has distinguishing features such as the load-bearing load is big, two-wire sets up synchronously, linear precise control, saving construction period, be applicable to that special line for passenger trains 64m concrete simple supported box beam two-wire sets up simultaneously, be specially adapted to the segmented prefabricated occasion of setting up of case beam, the box girder integral lifting of Sinilar engineering set up also can adopt bridge fabrication machine of the present invention and job practices.
Description of drawings
Fig. 1 is the structural representation of bridge fabrication machine assembly unit process.
Fig. 2 is the lateral view of Fig. 1.
Fig. 3 is the bridge fabrication machine agent structure schematic diagram that assembly unit is finished.
Fig. 4 is the A-A sectional view of Fig. 3, has shown beam sections installation in position state, not shown horizontal-associate.
Fig. 5 is the B-B sectional view of Fig. 3.
Fig. 6 is the bridge fabrication machine agent structure schematic diagram in the traveling process.
Fig. 7 is bridge fabrication machine construction process figure.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is described in further detail.
Bridge fabrication machine structure of the present invention such as Fig. 3, shown in Figure 5, bridge fabrication machine girder adopt parallel about two groups of main truss 4 structures, every group of main truss 4 rear and front ends are connected with front launching nose 5, back launching nose 7 respectively; Upside is connected to a fixed by multiple tracks horizontal-associate 13 between two main trusses 4, and downside is connected with shoulder pole girder 6 under the multiple tracks; Two main trusses 4 are supported on adjacent two bridge piers 12 by the slide 8 that moves in length and breadth of plate armature.Bridge fabrication machine employing high strength reassembling type military beam and new system rod member are assembled, two groups of main truss 4 center to center distance 12.8m, main truss span 64m, front launching nose 44m, back launching nose 40m, total length 148m; Main truss height 7.5m, nose girder purlin height is 2.5m.Single group purlin is made up of three truss, and girder space is 1.1m.Middle sheet main truss 41 upper fixed have the moving track 42 of bale handle loop wheel machine 3; Bale handle loop wheel machine 3 is a gantry crane, and the column of gantry crane is erected at respectively on this moving track 42.
The bridge fabrication machine work progress as shown in Figure 7.
At first, assembling bridge manufacturing machine: as shown in Figure 1 and Figure 2, the place respectively adorns a fixed lifting station 9 in adjacent two piers of the starting point of setting a roof beam in place 12 pier positions, be assembled into integral body on the platform for lining 11 that is provided with on ground by single group main truss 4, then by fixing promote that station 9 integral body rise to Dun12Ding mounted in advance move in length and breadth on the slide 8 in place.Horizontal-associate 13, following shoulder pole girder 6 and bale handle loop wheel machine 3 put in place by attached pier tower crane (not shown) lifting and install.C is bridge fabrication machine assembly unit position among Fig. 1, and D is the bridge fabrication machine on-station position.
After the bridge fabrication machine assembly unit is finished, as shown in Figure 3, transportation and lifting beam sections 2 to be set up.At the other Liang Chang prefabricated subsection beam of bridge, set up order by bridge opening and arrange; With loop wheel machine beam sections 2 is mentioned on the beam transportation vehicle, started beam transportation vehicle and to the bale handle loop wheel machine, stop.Bolster bearing (not shown) is installed on each time shoulder pole girder 6, utilize then on the bridge fabrication machine bale handle loop wheel machine 3 from front to back each beam sections 2 lifting to the top between two shoulder pole girders 6 of design appointment, and regulate the bolster bearing and make each beam sections in full accord with design height in error range.As shown in Figure 4.
After whole beam sections installations of same bridge opening, bale handle loop wheel machine 3 is return the rear, carries out the concrete cast.Steel strand, connect bellows, the wet seam reinforcing bar of colligation, upright wet seam template, the wet joint concrete of cast.Wet joint concrete reach design strength 85% after begin to apply prestressing force, carry out stretch-draw and unloading in three batches.After finishing, bridge fabrication machine is added the root steel strand by two continuous jack 10 that are fixed on the bridge pier of bridge fabrication machine the place ahead and is drawn the reach via hole.As shown in Figure 6.
Behind the bridge fabrication machine reach via hole, establish laying fortune beam orbit (not shown) on the beam sections of finishing 1 at rigid frame.Repeating top transportation then installs beam sections, concrete cast, applies prestressing force, stretch-draw, unloading, reach via hole, until finishing setting up of whole bridge openings.
After finishing last bridge opening and setting up, at the fixing station 9 that promotes of the adjacent two bridge pier assembly units of the terminal point of setting a roof beam in place, whole promote bridge fabrication machine list group main truss and transfer to set up bridge floor and decompose dismounting again.
The above-mentioned specific embodiment is the preferred embodiments of the present invention; can not limit claim of the present invention; other any change or other equivalent substitute mode that does not deviate from technical scheme of the present invention and made is included within protection scope of the present invention.
Claims (9)
1, a kind of double line box girder downward mobile formwork bridge fabrication machine is characterized in that: the bridge fabrication machine girder adopt parallel about two groups of main truss structure, every group of main truss rear and front end is connected with forward and backward nose girder respectively; Upside is connected to a fixed by the multiple tracks horizontal-associate between two main trusses, and downside is connected with shoulder pole girder under the multiple tracks; The main truss top is provided with can be along the bale handle loop wheel machine of the vertical traveling of main truss; Two main trusses are supported on adjacent two bridge piers by moving slide in length and breadth.
2, bridge fabrication machine according to claim 1 is characterized in that: described arbitrary group of main truss is the three truss structure, and be assembled by reassembling type military beam and self-control rod member.
3, bridge fabrication machine according to claim 2 is characterized in that: described bale handle loop wheel machine two moving tracks are separately fixed at sheet upside in every group of main truss; Described bale handle loop wheel machine be gantry crane, two columns of gantry crane are erected at respectively on described two moving tracks.
4, bridge fabrication machine according to claim 1 is characterized in that: described bridge fabrication machine advancing device is two continuous jack, and every jack is equipped with many steel strand.
5, the job practices of double line box girder downward mobile formwork bridge fabrication machine as claimed in claim 1 is characterized in that comprising the steps:
A, at the fixing station that promotes of the adjacent two pier assembly units of the starting point of setting a roof beam in place, single group main truss and front and back nose girder promote by fixing that the station is whole to rise to default the moving in length and breadth on the slide of adjacent two Dun Ding of the starting point of setting a roof beam in place behind spelling on the installation on ground platform; Horizontal-associate, following shoulder pole girder and bale handle loop wheel machine put in place by attached pier tower crane lifting and install;
B, prefabricated subsection beam are transported to bale handle loop wheel machine suspension centre below by the bridge floor flat car for transport of sills, and by the bale handle loop wheel machine each are lifted top between adjacent twice shoulder pole girders of correspondence to beam sections, and adjust to the design plane position;
After whole beam sections installations of C, same bridge opening, the wet seam reinforcing bar of welding, template are installed, prestressed bellows and reeving carries out the concrete cast; Apply prestressing force, stretch-draw, unloading and the demoulding, finish setting up of the first bridge opening beam sections;
D, main truss is dragged to default the moving in length and breadth on the slide of next bridge pier Dun Ding;
E, on the beam sections that construction finishes, lay the fortune beam orbit that passes through for beam transportation vehicle, repeat the step of B to E again, set up until whole bridge openings and finish;
F, at the fixing station that promotes of the adjacent two bridge pier assembly units of the terminal point of setting a roof beam in place, whole promote bridge fabrication machine list group main truss and transfer to set up bridge floor and decompose dismounting again.
6, job practices according to claim 5 is characterized in that: among the described step B, lifting puts in place the bale handle loop wheel machine to beam sections each successively by vertical order.
7, job practices according to claim 5 is characterized in that: among the described step C, the bale handle loop wheel machine carries out the concrete cast after retreating to the main truss rear again.
8, job practices according to claim 5 is characterized in that: among the described step C, wet joint concrete reaches 85% o'clock of design strength and begins to apply prestressing force.
9, job practices according to claim 5 is characterized in that: among the described step D, bridge fabrication machine is by the dilatory reach of advancing device; Described bridge fabrication machine advancing device is two continuous jack that are equipped with many steel strand, and these two continuous jack are installed on the bridge pier in bridge fabrication machine the place ahead, by the dilatory two groups of main trusses reach of steel strand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100299234A CN101324053A (en) | 2008-08-01 | 2008-08-01 | Double line box girder downward mobile formwork bridge fabrication machine and construction method thereof |
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| CNA2008100299234A CN101324053A (en) | 2008-08-01 | 2008-08-01 | Double line box girder downward mobile formwork bridge fabrication machine and construction method thereof |
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| CN101831876A (en) * | 2010-04-15 | 2010-09-15 | 中铁大桥局集团第五工程有限公司 | Movable bridge fabrication machine and bridging method thereof |
| CN101838968A (en) * | 2010-05-19 | 2010-09-22 | 中铁二十局集团有限公司 | Double track bridge construction process crossing existing railway operational lines |
| CN101787678B (en) * | 2010-02-08 | 2012-03-21 | 中铁一局集团有限公司 | Large-span section assembling bridge manufacturing machine and assembling construction process thereof |
| CN102747693A (en) * | 2012-07-27 | 2012-10-24 | 中铁一局集团有限公司 | Railway T-beam erecting construction method based on continuous beam laying reloading points |
| CN103382701A (en) * | 2013-06-03 | 2013-11-06 | 四川公路桥梁建设集团有限公司 | Transport system for corbel mechanism of under-deck non-self-propelled movable mould frame and mounting method of transport system |
| CN103437287A (en) * | 2013-07-16 | 2013-12-11 | 中铁十三局集团第五工程有限公司 | Full-span box girder segment assembling method applied to bridge construction |
| CN107165051A (en) * | 2017-05-15 | 2017-09-15 | 中铁三局集团线桥工程有限公司 | Elevated station list double line box girder erection construction method |
| CN108086169A (en) * | 2017-12-13 | 2018-05-29 | 中国铁建大桥工程局集团有限公司 | The installation method for improving of bridge construction mobile formwork |
| CN109095359A (en) * | 2018-10-15 | 2018-12-28 | 中铁六局集团广州工程有限公司 | Hanging apparatus and method |
| CN109204105A (en) * | 2018-10-24 | 2019-01-15 | 中建钢构有限公司 | The integration of transporting and building construction technology of transport vehicle and large heavy girder component |
| CN112211112A (en) * | 2020-09-03 | 2021-01-12 | 宁波市政工程建设集团股份有限公司 | Steel box girder installation method adopting double-guide-girder erection machine on existing bridge |
| CN112523087A (en) * | 2020-10-16 | 2021-03-19 | 保利长大工程有限公司 | A beam lifting station for beam slab erects |
| CN113756210A (en) * | 2021-10-19 | 2021-12-07 | 中交一公局第一工程有限公司 | Device and method for self-transporting and mounting top box girder across adjacent bent cap |
| CN114622488A (en) * | 2022-03-01 | 2022-06-14 | 中铁广州工程局集团有限公司 | Segment beam overwater lifting station and segment beam lifting method |
| CN114892662A (en) * | 2022-04-01 | 2022-08-12 | 中交第二航务工程局有限公司 | Full-automatic hoisting method suitable for underground prefabricated structure |
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2008
- 2008-08-01 CN CNA2008100299234A patent/CN101324053A/en active Pending
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| CN101787678B (en) * | 2010-02-08 | 2012-03-21 | 中铁一局集团有限公司 | Large-span section assembling bridge manufacturing machine and assembling construction process thereof |
| CN101831876A (en) * | 2010-04-15 | 2010-09-15 | 中铁大桥局集团第五工程有限公司 | Movable bridge fabrication machine and bridging method thereof |
| CN101831876B (en) * | 2010-04-15 | 2011-07-27 | 中铁大桥局集团第五工程有限公司 | Movable bridge fabrication machine and bridging method thereof |
| CN101838968A (en) * | 2010-05-19 | 2010-09-22 | 中铁二十局集团有限公司 | Double track bridge construction process crossing existing railway operational lines |
| CN101838968B (en) * | 2010-05-19 | 2011-06-29 | 中铁二十局集团有限公司 | Double track bridge construction process crossing existing railway operational lines |
| CN102747693A (en) * | 2012-07-27 | 2012-10-24 | 中铁一局集团有限公司 | Railway T-beam erecting construction method based on continuous beam laying reloading points |
| CN102747693B (en) * | 2012-07-27 | 2014-07-23 | 中铁一局集团有限公司 | Railway T-beam erecting construction method based on continuous beam laying reloading points |
| CN103382701A (en) * | 2013-06-03 | 2013-11-06 | 四川公路桥梁建设集团有限公司 | Transport system for corbel mechanism of under-deck non-self-propelled movable mould frame and mounting method of transport system |
| CN103437287A (en) * | 2013-07-16 | 2013-12-11 | 中铁十三局集团第五工程有限公司 | Full-span box girder segment assembling method applied to bridge construction |
| CN103437287B (en) * | 2013-07-16 | 2015-12-02 | 中铁建大桥工程局集团第五工程有限公司 | Be applied to the whole opening box girder section assembling method of bridge construction |
| CN107165051A (en) * | 2017-05-15 | 2017-09-15 | 中铁三局集团线桥工程有限公司 | Elevated station list double line box girder erection construction method |
| CN107165051B (en) * | 2017-05-15 | 2018-09-18 | 中铁三局集团线桥工程有限公司 | Elevated station list double line box girder erection construction method |
| CN108086169A (en) * | 2017-12-13 | 2018-05-29 | 中国铁建大桥工程局集团有限公司 | The installation method for improving of bridge construction mobile formwork |
| CN109095359A (en) * | 2018-10-15 | 2018-12-28 | 中铁六局集团广州工程有限公司 | Hanging apparatus and method |
| CN109204105A (en) * | 2018-10-24 | 2019-01-15 | 中建钢构有限公司 | The integration of transporting and building construction technology of transport vehicle and large heavy girder component |
| CN112211112A (en) * | 2020-09-03 | 2021-01-12 | 宁波市政工程建设集团股份有限公司 | Steel box girder installation method adopting double-guide-girder erection machine on existing bridge |
| CN112523087A (en) * | 2020-10-16 | 2021-03-19 | 保利长大工程有限公司 | A beam lifting station for beam slab erects |
| CN113756210A (en) * | 2021-10-19 | 2021-12-07 | 中交一公局第一工程有限公司 | Device and method for self-transporting and mounting top box girder across adjacent bent cap |
| CN113756210B (en) * | 2021-10-19 | 2023-02-10 | 中交一公局集团有限公司 | Device and method for self-transporting and mounting top box girder across adjacent bent cap |
| CN114622488A (en) * | 2022-03-01 | 2022-06-14 | 中铁广州工程局集团有限公司 | Segment beam overwater lifting station and segment beam lifting method |
| CN114622488B (en) * | 2022-03-01 | 2024-03-01 | 中铁广州工程局集团有限公司 | Section beam water lifting station and section beam lifting method |
| CN114892662A (en) * | 2022-04-01 | 2022-08-12 | 中交第二航务工程局有限公司 | Full-automatic hoisting method suitable for underground prefabricated structure |
| CN114892662B (en) * | 2022-04-01 | 2023-12-29 | 中交第二航务工程局有限公司 | Full-automatic hoisting method suitable for underground prefabricated structure |
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Open date: 20081217 |