CN102409616A - Construction method of bridge girder with ultra-small radius and bridge erecting machine used in same - Google Patents
Construction method of bridge girder with ultra-small radius and bridge erecting machine used in same Download PDFInfo
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- CN102409616A CN102409616A CN2011102684365A CN201110268436A CN102409616A CN 102409616 A CN102409616 A CN 102409616A CN 2011102684365 A CN2011102684365 A CN 2011102684365A CN 201110268436 A CN201110268436 A CN 201110268436A CN 102409616 A CN102409616 A CN 102409616A
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Abstract
The invention relates to a construction method of a bridge girder with an ultra-small radius and a bridge erecting machine used in the same. The bridge erecting machine used in the construction method of the bridge girder with the ultra-small radius is characterized in that the rear side of a middle outrigger of a truss body of the bridge erecting machine is equipped with a rear curved girder, a gear box and a trolley which can be disassembled and assembled. In the construction method, a two-step hole-passing mode is adopted by adding a temporary outrigger, and the construction method is safe and convenient and has the following beneficial effects that a counterweight method is not only used, as the counterweight balance process is multifarious and a girder slab can not be fed based on counterweight balance under an initial condition so that construction is very difficult; and on the physical basis of the bridge erecting machine for the construction method and special machinery, the temporary outrigger is transformed so as to complete small-radius bridging hole-passing operation in two steps, which saves time, simplifies procedures, improves safety and fully prevents the problems of overturning of the bridge erecting machine and the like.
Description
Technical field: the present invention relates to set a roof beam in place job practices and be used for its bridge formation machine of extra small radius.
Background technology: the job practices that traditional extra small radius is set a roof beam in place all is directly to adopt the method for counterweight to carry out via hole, like this, operates very numerous and diverse; And very difficult in the via hole construction that extra small radius is set a roof beam in place, expend time in, feeding beam bothers very much; Technical difficulty is big; Operation is difficult to accomplish, and accident often occurs because it is difficult to operation, crack and inefficacy etc. occur such as the Overturning of Bridge Girder Erecting Machine beam slab.
Summary of the invention: goal of the invention: convenient for a kind of via hole in two steps is provided, and safety, that adopts the method via hole that adds fulcrum is used for job practices that extra small radius sets a roof beam in place and the bridge formation machine that is used for it.
In order to reach as above purpose, the present invention takes following technical scheme:
Be used for the bridge formation machine of the job practices that extra small radius sets a roof beam in place, it is characterized in that: the rear side of the middle supporting leg of said bridge formation machine truss body has back curved beam, gear roller box, the dolly that can remove installation.
The job practices that the extra small radius of employing said apparatus is set a roof beam in place is characterized in that: comprise a mouthful following step:
A) lay bridge formation machine via hole track;
B) in jack-up in the supporting leg position, and be put into and be adjusted into direction of travel on the track; Beam slab is transported to the afterbody of bridge formation machine with flat car for transport of sills;
C) with jack with bridge formation machine main truss rear portion jack-up, rear support leg is lifted, lay down back curved beam and gear roller box, the dolly of rear support leg;
D) will back curved beam and gear roller box, dolly be installed in supporting leg front end certain distance as interim front leg strut;
E) supporting leg and interim front leg strut in the dependence carry out preceding half section via hole, during via hole to front leg strut arrival temporarily beam-ends, stop via hole;
F) the counterweight beam is placed on bridge formation machine truss body rear end counterweight;
G) the back sign indicating number of interim front leg strut plays two sleepers and stamps, and supports as the bridge formation machine temporarily;
H) unloading conduct back curved beam, gear roller box, the dolly of supporting leg temporarily, the interim supporting leg that unloads is transported to the rear support leg position with the crossbeam overhead traveling crane, back curved beam, gear roller box, dolly are installed, promptly is that back curved beam, gear roller box, dolly are resetted;
I) sleeper of removing the interim supporting leg position of conduct is stamped;
J) continue via hole, front leg strut arrived front bridge pier bent cap above; Accomplish preliminary via hole;
K) bridge machine rotation, traversing: bridge formation machine front leg strut is fixed, traversing middle supporting leg, and supporting leg is as far as possible near the small radius direction in making;
L) feeding beam.
The further technical scheme of job practices of the present invention is: said interim supporting leg supports in orbit fully.
The further technical scheme of job practices of the present invention is: the counterweight described in the step f refers to overhead traveling crane and can utilize beam slab to do counterweight then the lifting of beam slab front end.
The further technical scheme of job practices of the present invention is: adopt said method when setting up beam slab, take the order of outer side bar → interior side bar → central sill to set a roof beam in place.
The further technical scheme of job practices of the present invention is: also have a step before the step a, wet joint, the wet seam reinforcing bar of good and sound beam slab all are welded to connect with last hole.
The further technical scheme of job practices of the present invention is: among the said step k; Said bridge formation machine front end relies on front end bent cap center just to the little direction rotation of radius; The rear end is to the big direction rotation of radius, and bridge formation machine center line integral body moves to the small radius direction.
The further technical scheme of job practices of the present invention is: also have following steps between said step K and the I: remove bridge formation machine final section standard knot.
The further technical scheme of job practices of the present invention is: said step h is: the interim support that will unload is transported to the rear support leg position with the front beam overhead traveling crane; Back curved beam, gear roller box, dolly are installed; Pad with crowntree below the track, two beam wet joint positions pad with sleeper and widen.
Be used for the bridge formation machine of the job practices that extra small radius sets a roof beam in place, it is characterized in that: the front side of the middle supporting leg of said bridge formation machine truss body has and newly adds curved beam, gear roller box, dolly, and rear side has back curved beam, gear roller box, dolly.
Adopt as above the present invention of technical scheme, have following beneficial effect: not merely adopt counterweight, because the process of counterweight is a numerous and diverse process; And based on the primary condition counterweight, beam slab feeds not enter, and normal erection construction hardly maybe; Very difficult, method of the present invention and special-purpose machinery adopt the method that increases an interim supporting leg of conversion on the physical basis of bridge formation machine; Can be divided into for two steps, the bridge formation via hole of small radius is accomplished, save time; Operation is simple, and safety, has prevented problems such as toppling of bridge formation machine fully.
Description of drawings:
In order to further specify the present invention, further describe below in conjunction with accompanying drawing:
Fig. 1 is the structural representation of a kind of machine of building bridge of invention;
Fig. 2 is the initial step sketch map of the inventive method construction;
Fig. 3 is the sketch map of second state of job practices of the present invention;
Fig. 4 is the sketch map of the third state of job practices of the present invention;
Wherein: 1. newly add curved beam, gear roller box, dolly; 2. curved beam, gear roller box, dolly after; 3. middle supporting leg; 4. bridge formation machine truss body; 5. overhead traveling crane; 6. bridge formation machine; 7. counterweight beam; 8. put bridge floor; 9. do not put the bridge floor fulcrum.
The specific embodiment:
Below in conjunction with accompanying drawing embodiments of the invention are described, present embodiment is not construed as limiting the invention:
Embodiment 1: combine Fig. 1-Fig. 4
Be used for the bridge formation machine of the job practices that extra small radius sets a roof beam in place, it is characterized in that: the rear side of the middle supporting leg 3 of said bridge formation machine truss body 4 has back curved beam, gear roller box, the dolly 2 that can remove installation.
This device can adopt the following method via hole of constructing:
Be used for the bridge formation machine of the job practices that extra small radius sets a roof beam in place, it is characterized in that: the front side of the middle supporting leg 3 of said bridge formation machine truss body 4 has and newly adds curved beam, gear roller box, dolly 1, and rear side has back curved beam, gear roller box, dolly 2.
Be used for the bridge formation machine of the job practices that extra small radius sets a roof beam in place, it is characterized in that: the rear side of the middle supporting leg 3 of said bridge formation machine truss body 4 has back curved beam, gear roller box, the dolly 2 that can remove installation.
The job practices that the extra small radius that employing is as above installed is set a roof beam in place is characterized in that: comprise following steps:
A) lay bridge formation machine via hole track;
B) in jack-up in the supporting leg position, and be put into and be adjusted into direction of travel on the track; Beam slab is transported to the afterbody of bridge formation machine with flat car for transport of sills;
C) with jack with bridge formation machine main truss rear portion jack-up, rear support leg is lifted, lay down back curved beam and gear roller box, the dolly 2 of rear support leg;
D) will back curved beam and gear roller box, dolly 2 be installed in supporting leg front end certain distance as interim front leg strut;
E) supporting leg and interim front leg strut in the dependence carry out preceding half section via hole, during via hole to front leg strut arrival temporarily beam-ends, stop via hole;
F) counterweight beam 7 is placed on bridge formation machine truss body rear end counterweight;
G) the back sign indicating number of interim front leg strut plays two sleepers and stamps, and supports as the bridge formation machine temporarily;
H) unloading conduct back curved beam, gear roller box, the dolly 2 of supporting leg temporarily, the interim supporting leg that unloads is transported to the rear support leg position with the crossbeam overhead traveling crane, back curved beam, gear roller box, dolly 2 are installed, promptly is that back curved beam, gear roller box, dolly 2 are resetted;
I) sleeper of removing the interim supporting leg position of conduct is stamped;
J) continue via hole, front leg strut arrived front bridge pier bent cap above; Accomplish preliminary via hole;
K) bridge machine rotation, traversing: bridge formation machine front leg strut is fixed, traversing middle supporting leg, and supporting leg is as far as possible near the small radius direction in making;
L) feeding beam.
Fig. 1 shows that feeding beam is difficulty relatively, and Fig. 2 shows; Can remove back curved beam, gear roller box, the dolly 2 of installation and remove, and change to the front side of the middle supporting leg 3 of said bridge formation machine truss body 4,2. curved beam, gear roller box, dolly 2 usefulness are represented after this moment; When 2. this interim supporting leg has been arranged, advance one section earlier, cross preceding half sector hole; Be not to adopt the mode via hole that adds counterweight this moment, but adopt the mode that adds supporting leg to stablize via hole; Fig. 3 shows, continues to adopt the mode via hole of counterweight, because this moment, via hole can conveniently be accomplished.Middle here supporting leg 3 is for 1..
Adopt this mode via hole, can also prevent that the distance that whole beam is walked is shorter, and is because save time, safer because the beam of counterweight is difficult to feed bigger the time on curved surface.
Embodiment 2: based on embodiment 1;
Be used for the bridge formation machine of the job practices that extra small radius sets a roof beam in place, it is characterized in that: the front and back end of the middle supporting leg 3 of said bridge formation machine truss body 4 has respectively and newly adds curved beam, gear roller box, dolly 1 and back curved beam, gear roller box, dolly 2.
Need not move and support interim supporting leg this moment, because this place newly adds curved beam, gear roller box, dolly 1 effect of serving as interim supporting leg just arranged.
Or the via hole form of construction work of employing and embodiment 1 basically identical, different is to be put on the position that newly adds curved beam, gear roller box, dolly 1 without curved beam, gear roller box, dolly 2 after the dismounting.
Embodiment 3: based on above embodiment
The further technical scheme of job practices of the present invention is: said interim supporting leg supports in orbit fully.
Such purpose also can guarantee interim supporting leg performance function except on the basis that prevents the beam body and suffer damage.
The further technical scheme of job practices of the present invention is: the counterweight described in the step f refers to overhead traveling crane and can utilize beam to do counterweight then the lifting of beam slab front end.
The further technical scheme of job practices of the present invention is: adopt said method when setting up beam slab, take the order of outer side bar → interior side bar → central sill to set a roof beam in place.
Take such method can guarantee the stable of whole foundation.
The further technical scheme of job practices of the present invention is: also have a step before the step a, wet joint, the wet seam reinforcing bar of good and sound beam slab are welded to connect earlier with last hole.
Welding, is not only wet seam transverse joint, and the wet joint longitudinal seam is also arranged; Be in order to reinforce; Prevent to cause damage in the whole construction course, be not only the wet joint reinforcing bar, wet seam reinforcing bar is also arranged; Be in order the beam body to be connected into integral body, to increase the resistance to overturning that the bridge formation machine is crossed beam body above the control.
The further technical scheme of job practices of the present invention is: among the said step k, the traversing finger of said bridge formation machine, bridge formation machine front leg strut is fixed, traversing middle supporting leg, and supporting leg is as far as possible near the small radius direction in making.
Among the said step k, said bridge formation machine rotation refers to bridge formation machine front end to relying on front end bent cap center just to the little direction rotation of radius, and the rear end is to the big direction rotation of radius, and bridge formation machine center line integral body moves to the small radius direction.
In this step, gain control of degree, through calculating, control the central bearing point position well, the load in work progress is unlikely to damage the beam body, on the basis of not damaging the beam body, constructs.In addition certain chock in the time of necessary increases stressed surface area.
The further technical scheme of job practices of the present invention is: also have following steps between said step K and the I: remove bridge formation machine final section standard knot.
This step prevents operated mobile of step k or can not reach the standard of feeding beam.
The further technical scheme of job practices of the present invention is: said step h is: the interim support that will unload is transported to the rear support leg position with the front beam overhead traveling crane; Back curved beam, gear roller box, dolly are installed; Pad with crowntree below the track, two beam wet joint positions pad with sleeper and widen.
At last, because what write that draft adopts is non exhaustive mode, so the present invention can make the enforcement of some variants according to this manual and claims, and it is still in protection scope of the present invention.
Claims (10)
1. be used for the bridge formation machine of the job practices that extra small radius sets a roof beam in place, it is characterized in that: the front side of the middle supporting leg (3) of said bridge formation machine truss body (4) has and newly adds curved beam, gear roller box, dolly (1), and rear side has back curved beam, gear roller box, dolly (2).
2. be used for the bridge formation machine of the job practices that extra small radius sets a roof beam in place, it is characterized in that: the rear side of the middle supporting leg (3) of said bridge formation machine truss body (4) has back curved beam, gear roller box, the dolly (2) that can remove installation.
3. the job practices that the extra small radius that adopts claim 2 to install is set a roof beam in place is characterized in that: comprise following steps:
A. lay bridge formation machine via hole track;
B. jack-uping in middle supporting leg position, and is put into and is adjusted into direction of travel on the track; Beam slab is transported to the afterbody of bridge formation machine with flat car for transport of sills;
C. with jack with bridge formation machine main truss rear portion jack-up, rear support leg is lifted, lay down back curved beam and gear roller box, the dolly (2) of rear support leg;
D. will back curved beam and gear roller box, dolly (2) be installed in supporting leg front end certain distance as interim front leg strut;
E. supporting leg and interim front leg strut carry out preceding half section via hole in relying on, and when via hole arrives beam-ends to interim front leg strut, stop via hole;
F. counterweight beam (7) is placed on bridge formation machine truss body rear end counterweight;
The back sign indicating number of g. interim front leg strut plays two sleepers to be stamped, and supports as the bridge formation machine temporarily;
H. unloading back curved beam, gear roller box, dolly (2) as interim supporting leg, the interim supporting leg that unloads is transported to the rear support leg position with the crossbeam overhead traveling crane, back curved beam, gear roller box, dolly (2) are installed, promptly is that back curved beam, gear roller box, dolly (2) are resetted;
I. remove as the sleeper at interim supporting leg position and stamp;
J. continue via hole, front leg strut arrived front bridge pier bent cap above; Accomplish preliminary via hole;
K. bridge machine rotation, traversing: bridge formation machine front leg strut is fixed, traversing middle supporting leg, and supporting leg is as far as possible near the small radius direction in making;
L. feeding beam.
4. the job practices that extra small radius as claimed in claim 3 is set a roof beam in place is characterized in that: said interim supporting leg supports in orbit fully.
5. the job practices that extra small radius as claimed in claim 3 is set a roof beam in place is characterized in that: the counterweight described in the step f refers to overhead traveling crane and can utilize beam slab to do counterweight then the lifting of beam slab front end.
6. the job practices that extra small radius as claimed in claim 3 is set a roof beam in place is characterized in that: adopt said method when setting up beam slab, take the order of outer side bar → interior side bar → central sill to set a roof beam in place.
7. the job practices that extra small radius as claimed in claim 3 is set a roof beam in place is characterized in that: also have a step before the step a, wet joint, the wet seam reinforcing bar of good and sound beam slab all are welded to connect with last hole.
8. the job practices that extra small radius as claimed in claim 3 is set a roof beam in place; It is characterized in that: among the said step k; Said bridge formation machine front end forward end bent cap center is just to the little direction rotation of radius, and the rear end is to the big direction rotation of radius, and bridge formation machine center line integral body moves to the small radius direction.
9. the job practices that extra small radius as claimed in claim 3 is set a roof beam in place is characterized in that: also have following steps between said step K and the I: remove bridge formation machine final section standard knot.
10. the job practices that extra small radius as claimed in claim 3 is set a roof beam in place; It is characterized in that: said step h is: the interim support that will unload is transported to the rear support leg position with the crossbeam overhead traveling crane; Back curved beam, gear roller box, dolly are installed; Pad with crowntree below the track, two beam wet joint positions pad with sleeper and widen.
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| CN201110268436.5A CN102409616B (en) | 2011-09-09 | 2011-09-09 | Construction method of bridge girder with ultra-small radius and bridge erecting machine used in same |
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| CN201110268436.5A CN102409616B (en) | 2011-09-09 | 2011-09-09 | Construction method of bridge girder with ultra-small radius and bridge erecting machine used in same |
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| CN102409616A true CN102409616A (en) | 2012-04-11 |
| CN102409616B CN102409616B (en) | 2015-07-08 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103031811A (en) * | 2012-12-28 | 2013-04-10 | 中铁十一局集团有限公司 | Section-assembling bridge girder erection machine suitable for erecting bridges with minimum curve radii |
| CN103422441A (en) * | 2013-08-13 | 2013-12-04 | 中铁六局集团有限公司 | Perforating method for erecting long-span highway box girders by using DJ180 bridge erecting machine |
| CN103696374A (en) * | 2013-12-25 | 2014-04-02 | 中铁大桥勘测设计院集团有限公司 | Straddle method of cantilever of long-span simply supported steel truss beam of horizontal curve section |
| CN105839547A (en) * | 2016-06-12 | 2016-08-10 | 中铁二局集团有限公司 | Adjustable small-radius bridge girder erection machine and bridge girder erection method |
| CN108625298A (en) * | 2018-07-02 | 2018-10-09 | 中交四公局第五工程有限公司 | Widen middle supporting leg support roller slot Bridge Erector and construction method |
| CN111501564A (en) * | 2020-04-22 | 2020-08-07 | 中交第三航务工程局有限公司 | Corner arc track arrangement process |
| CN112376430A (en) * | 2020-10-27 | 2021-02-19 | 中铁十二局集团有限公司 | Transverse pushing construction method for bridge fabrication machine |
| CN115125848A (en) * | 2022-06-23 | 2022-09-30 | 保利长大工程有限公司 | Construction method of small-radius curve prefabricated plate beam |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103031811A (en) * | 2012-12-28 | 2013-04-10 | 中铁十一局集团有限公司 | Section-assembling bridge girder erection machine suitable for erecting bridges with minimum curve radii |
| CN103422441A (en) * | 2013-08-13 | 2013-12-04 | 中铁六局集团有限公司 | Perforating method for erecting long-span highway box girders by using DJ180 bridge erecting machine |
| CN103422441B (en) * | 2013-08-13 | 2015-10-28 | 中铁六局集团有限公司 | DJ180 Bridge Erector erection long-span highway box beam passing method |
| CN103696374A (en) * | 2013-12-25 | 2014-04-02 | 中铁大桥勘测设计院集团有限公司 | Straddle method of cantilever of long-span simply supported steel truss beam of horizontal curve section |
| CN103696374B (en) * | 2013-12-25 | 2015-10-28 | 中铁大桥勘测设计院集团有限公司 | Horizontal curve section is greatly across freely-supported steel trussed beam cantilever erection method |
| CN105839547A (en) * | 2016-06-12 | 2016-08-10 | 中铁二局集团有限公司 | Adjustable small-radius bridge girder erection machine and bridge girder erection method |
| CN108625298A (en) * | 2018-07-02 | 2018-10-09 | 中交四公局第五工程有限公司 | Widen middle supporting leg support roller slot Bridge Erector and construction method |
| CN108625298B (en) * | 2018-07-02 | 2024-04-26 | 中交建筑集团第五工程有限公司 | Bridge girder erection machine with widened middle supporting leg riding wheel groove and construction method |
| CN111501564A (en) * | 2020-04-22 | 2020-08-07 | 中交第三航务工程局有限公司 | Corner arc track arrangement process |
| CN112376430A (en) * | 2020-10-27 | 2021-02-19 | 中铁十二局集团有限公司 | Transverse pushing construction method for bridge fabrication machine |
| CN115125848A (en) * | 2022-06-23 | 2022-09-30 | 保利长大工程有限公司 | Construction method of small-radius curve prefabricated plate beam |
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