CN101713170A - Integral slide device and method of floor steel pipe column bracket of bridge end bay closure section construction - Google Patents
Integral slide device and method of floor steel pipe column bracket of bridge end bay closure section construction Download PDFInfo
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- CN101713170A CN101713170A CN200910209251A CN200910209251A CN101713170A CN 101713170 A CN101713170 A CN 101713170A CN 200910209251 A CN200910209251 A CN 200910209251A CN 200910209251 A CN200910209251 A CN 200910209251A CN 101713170 A CN101713170 A CN 101713170A
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Abstract
The invention relates to integral slip device and method of a floor steel pipe column bracket of a bridge end bay closure section construction. The device comprises a floorstand, a drawing mechanism and two slip tracks (5) symmetrically arranged on an expanded foundation (1), wherein two slip steel plates (20) are arranged on each slip track, and the slip steel plates move on the slip tracks under the action of the drawing mechanism; the lower parts of the slip tracks are supported on the expanded foundation (1) through a plurality of track leveling supporting seats (4); and the supporting seats have the effect of leveling and ensures that the whole tracks are horizontally arranged on the expanded foundation (1). The method comprises the following steps of: doing preparation works, measuring an elevation, mounting the floorstand and the drawing mechanism, implementing integral slip, and the like. The invention can effectively solve the problem of displacement of the whole bracket system in construction environments of large height and difficult going in and out of mechanical equipment and has the advantages of simple move mode, bracket dismounting procedure saving, turnover material loss reduction, construction period shortening, and the like.
Description
Technical field
The present invention relates to the whole mobile device of support, particularly relate to a kind of floor steel pipe column bracket of bridge end bay closure section construction integral slide device, and with the integral shift method of this support from a side integral shift of bridge to opposite side.
Background technology
The end bay of prestress concrete continuous rigid frame bridge beam all is that geology mostly is broken ground under the bridge in the beach district on limit, rivers riverbank usually, plant equipment turnover difficulty.When the pier position did not have aqua region on the riverbank, its end bay closure section construction adopts set up floor steel pipe column bracket enforcement cast-in-place construction.Before setting up, must handle ground earlier cast-in-place section construction bracket, to prevent the strutting system sedimentation.Be after adopting the expansion basis to carry out cure process, to carry out support again and set up generally speaking.Under the situation of this construction environment, for the double width bridge, after the construction of half range cast-in-situ box girder finishes, after taking strutting system to remove if construct during other half range, reinstall new strutting system again, not only the time cycle is long again, and the very difficult operation of plant equipment, spillage of material is also bigger.Under this construction environment, take integral support system displacement technology, demonstrated fully the superiority of this method, especially to highly higher strutting system, effect is particularly evident.With the entire bracket system from a side integral shift of bridge to opposite side, not only saved the duration, reduced spillage of material, also reduced the input of artificial and plant equipment simultaneously.
Summary of the invention
Technical problem to be solved by this invention is: a kind of whole mobile device of floor steel pipe column bracket that is applicable to bridge end bay closure section construction is provided, and provide a kind of with the integral shift method of this support from a side integral shift of bridge to opposite side, so that save the duration, reduce the input of spillage of material and artificial and plant equipment.
The present invention adopts following technical scheme to achieve these goals:
Floor steel pipe column bracket of bridge end bay closure section construction integral slide device provided by the invention, comprise and enlarge basis, two sliding rails, slippage steel plate, stand and haulage gears, wherein: two sliding rails are arranged symmetrically in and enlarge on the basis, be provided with two blocks of slippage steel plates above every sliding rail, this slippage steel plate moves on sliding rail under the effect of haulage gear; Every sliding rail is enlarging on the basis below by a plurality of track leveling seat supports, and these bearings have the leveling effect, makes the whole piece sliding rail be horizontal arrangement and is enlarging on the basis.
Floor steel pipe column bracket of bridge end bay closure section construction integral slipping method provided by the invention, its step comprises:
The first step, preparation:
Ground to cast-in-place section following boundary of works area of end bay is handled, and fluid concrete enlarges the basis, and presses the pre-buried a lot of leveling of design attitude bearing pre-embedded steel slab and two pre-embedded steel slabs to be shifted;
After cast-in-place section tensioning construction of the first half range end bay finishes, support top template downward modulation joint piece is unloaded, support top template and concrete are broken away from, remove the web template.
In second step, measure absolute altitude:
Measure the basic top mark height of expansion, determine sliding rail end face absolute altitude.
In the 3rd step, slot four steel pipe column bottoms:
According to the end face absolute altitude of sliding rail and the height of sliding rail, symmetrical grooving on sliding rail position, four steel pipe column bottoms.
The 4th step, the welding of slippage steel plate:
After the slippage steel plate passed steel pipe column, its bilateral symmetry was stretched out each 20cm of steel pipe column, and with the slippage steel plate by stiffened panel and steel pipe column notch upper end firm welding.
The 5th step, attachment rail leveling bearing and two sliding rails:
Attachment rail leveling bearing and two sliding rails, and with track leveling bearing and the leveling bearing pre-embedded steel slab welding that enlarges on the basis, simultaneously that track leveling bearing and the welding of sliding rail two ends is fixing.
The 6th step, the installation of Chain block mechanism:
A. Chain block mechanism is installed at front side below strutting system or rear side place:
Front side below strutting system or rear side place, its right side arrange one group of Chain block mechanism that is made of Chain block wire rope, front haulage Chain block, wire rope support carriers and haulage cable.Wait that with what an end span of haulage cable was crossed wire rope support carriers and sliding rail moving direction one end (the right-hand member head of sliding rail) is connected; The Chain block steel wire loop is on the steel pipe column in left side; The front haulage Chain block catches on the other end, the Chain block wire rope of haulage cable respectively by two hooks that are attached thereto.The wire rope support carriers is installed on the front end of sliding rail, in order to the supporting traction wire rope;
B. Chain block mechanism is installed at front side above strutting system or rear side place:
Front side above strutting system or rear side place, its right side arrange one group by last haulage cable, on draw the Chain block mechanism that Chain block and wire rope constitute, last haulage cable is enclosed within on the positive stop, steel wire loop on the steel pipe column on right side, on draw Chain block and catch on haulage cable, wire rope respectively by two hooks that are attached thereto.Place, front side above strutting system, its left side arrange one group by preceding buffer rope, on cushion the Chain block mechanism that Chain block and back buffer rope constitute, preceding buffer rope is enclosed within on the backstop, back buffer rope be enclosed within the left side steel pipe column on, on cushion Chain block by two hooks that are attached thereto catch on respectively preceding buffer rope, the back buffer rope.
The 7th step, notch about the lower end edge of four steel pipe columns is cut off steel pipe column with oxyacetylene metal-cutting, it is separated with the expansion basis.
The 8th step, the enforcement of floor steel pipe column bracket of bridge end bay closure section construction integral slipping:
The workman is assigned as 4 groups, each two groups up and down, below two groups of workmans spur the front haulage Chain block simultaneously forward, one group of workman of upper front spurs the traction Chain block forward, one group of workman of while upper back spurs slow letting go and draws cucurbit slowly to loosen, and guarantees that floor steel pipe column bracket steadily progressively moves forward.During operation, four groups of workmans will act in agreement up and down, carry out simultaneously.
The 9th step, treat that steel pipe column is displaced to assigned address after, with its with enlarge basic pre-embedded steel slab welding positioning stablity to be shifted.
Through above-mentioned steps, make of the work of whole floor steel pipe column bracket from a side integral shift of bridge to opposite side.
The present invention compared with prior art has following major advantage:
1. adopt steel pipe column bracket system integral shift construction technology, can disposable this integral support system be moved to the appointed place in short-range, and not remove original strutting system.
With described strutting system from a side integral shift of bridge to opposite side, compare with reinstalling again after the striking system, not only saved a large amount of circulation materials, and saved the input of plant equipment lifting and a large amount of artificial, economic benefit is obvious.
With described strutting system from a side integral shift of bridge to opposite side, not only saved the duration, short construction period does not need heavy mechanical equipment simultaneously in the displacement work progress, only need the small machine Chain block.
4. potential safety hazard is little, and construction period is safe and reliable.
In a word, the present invention adopts steel pipe column bracket system integral shift construction technology, can effectively solve the displacement problem of the integral support system under the construction environment highly high, that plant equipment is difficult to pass in and out, it is simple to have move mode, save the support mounting-dismounting programme, reduce the circulation material loss, shorten advantages such as construction period.
Description of drawings
Fig. 1 is the structural representation of floor steel pipe column bracket integral slide device of the present invention.
Fig. 2 is the vertical view of Fig. 1.
Among the figure: 1. enlarge the basis; 2. pre-embedded steel slab to be shifted; 3. leveling bearing pre-embedded steel slab; 4. track leveling bearing; 5. sliding rail; 6. haulage cable; 7. wire rope support carriers; 8. link up with; 9. front haulage Chain block; 10. Chain block wire rope; 11. steel pipe column; 12. positive stop; 13. last haulage cable; 14. last traction Chain block; 15. wire rope; 16. preceding buffer rope; 17. last buffering Chain block; 18. back buffer rope; 19. backstop; 20. slippage steel plate; 21. stiffened panel.
The specific embodiment:
The invention will be further described below in conjunction with embodiment and accompanying drawing.
Floor steel pipe column bracket of bridge end bay closure section construction integral slide device provided by the invention, its structure be as depicted in figs. 1 and 2: comprise enlarging basis 1, two sliding rail 5, slippage steel plate 20, stand and haulage gear.Two sliding rails 5 are arranged symmetrically in and enlarge on the basis 1, are provided with a slippage steel plate 20 above the every sliding rail, and this slippage steel plate can move on the sliding rail that is attached thereto under the effect of haulage gear; Every sliding rail is supported on below by a plurality of track leveling bearings 4 and enlarges on the basis 1, and these bearings have the leveling effect, makes the whole piece sliding rail be horizontal arrangement and is enlarging on the basis 1.
Described stand is provided with four steel pipe columns 11, their rectangular or square standing on the left part that enlarges basis 1; Connecting rod oblique with many or lateral arrangement links to each other between the adjacent steel tubing string, in order to increase intensity, rigidity and the stability of steel pipe column; Every pipe column lower end is fixed on the sliding rail; Form integrated support support sliding support bearing system (abbreviation strutting system) thus.
Described four steel pipe column 11 lower ends adopt following method to be fixed on the sliding rail:
Have the notch that passes for sliding rail 5 at every pipe column lower end, in order to fixing steel pipe column, and pass the reinforcement steel plate of notch in notch welding suitable for reading, form integrated support support sliding support bearing system (abbreviation strutting system), track install and fix finish after, open place suitable for reading at pipe column lower end four steel pipe columns below the notch are cut off with oxyacetylene metal-cutting, itself and root are disconnected.With Chain block steel pipe column is connected with sliding rail by wire rope at pipe column lower end then, utilizes pipe column lower end Chain block pulling force forward to make the slippage forward of strutting system integral body as the sliding friction between main pulling force, sliding rail and the slippage steel plate 20.The steel pipe column top is connected with the bridge pier block with steel pipe column with Chain block by wire rope, utilize pulling force that the pulling force of previous Chain block cooperates pipe column lower end towing bracket system forward, utilize simultaneously that the pulling force of a Chain block plays buffering and balance behind the top, up and down with joint efforts with strutting system integral body forward the steady slippage of short distance up to assigned address.With Chain block steel pipe column is connected with sliding rail by wire rope at pipe column lower end then, utilize pipe column lower end Chain block pulling force forward as main pulling force, sliding friction between track and the steel plate makes the slippage forward of strutting system integral body, the steel pipe column top is connected with the bridge pier block with steel pipe column with Chain block by wire rope, utilize pulling force that the pulling force of previous Chain block cooperates pipe column lower end towing bracket system forward, utilize simultaneously that the pulling force of a Chain block plays buffering and balance behind the top, up and down with joint efforts with the integral support system forward the steady slippage of short distance up to assigned address.
See Fig. 2, after slippage steel plate 20 passed steel pipe column, its bilateral symmetry was stretched out each 20cm of steel pipe column, and by stiffened panel 21 and steel pipe column notch upper end firm welding.
Described haulage gear is made up of two cover Chain block systems, they be symmetrically distributed in two sliding rails and the steel pipe column 11 that is attached thereto on.Every cover Chain block system is provided with two groups of Chain block mechanisms, wherein, one group of Chain block Distribution of Institutions both sides above strutting system, the remaining side of one group of Chain block arrangement of mechanism below strutting system, every group of Chain block mechanism is made up of Chain block and wire rope.
With a cover Chain block system is example, as depicted in figs. 1 and 2: the place, front side above strutting system, its right side arrange one group by last haulage cable 13, on draw the Chain block mechanism that Chain block 14 and wire rope 15 constitute, last haulage cable is enclosed within on the positive stop 12, steel wire loop on the steel pipe column 11 on right side, on draw Chain block and catch on haulage cable, wire rope respectively by two hooks that are attached thereto.Place, front side above strutting system, its left side arrange one group by preceding buffer rope 16, on cushion the Chain block mechanism that Chain block 17 and back buffer rope 18 constitute, preceding buffer rope is enclosed within on the backstop 19, back buffer rope be enclosed within the left side steel pipe column 11 on, on cushion Chain block by two hooks that are attached thereto catch on respectively preceding buffer rope, the back buffer rope.Place, front side below strutting system, one group of Chain block mechanism that is made of Chain block wire rope 10, front haulage Chain block 9, wire rope support carriers 7 and haulage cable 6 is arranged on its right side, haulage cable is enclosed within on the right-hand member head of sliding rail 5, the Chain block steel wire loop is on the steel pipe column 11 in left side, and the front haulage Chain block catches on Chain block wire rope, haulage cable respectively by two hooks 8 that are attached thereto.The wire rope support carriers is installed on the front end of sliding rail 5, in order to the supporting traction wire rope.
Be equipped with a plurality of equally distributed pre-embedded steel slabs 2 to be shifted and 3, two leveling bearings of two leveling bearing pre-embedded steel slabs pre-embedded steel slab and be distributed in the two ends that enlarge basis 1 at place, inside on the expansion basis 1 below sliding rail 5.
Described leveling bearing pre-embedded steel slab 3 is to weld with track leveling bearing 4 lower ends.Track leveling bearing 4 upper ends and the welding of sliding rail 5 lower ends are fixing.
The principle of floor steel pipe column bracket integral shift provided by the invention is: slot at pipe column lower end, the sliding rail that processes passed steel pipe column and be weldingly fixed on and enlarge on the basis, and pass the reinforcement steel plate of notch in notch welding suitable for reading, form integrated support support sliding support bearing system, track install and fix finish after, at pipe column lower end otch place suitable for reading four steel pipe columns are cut off with oxyacetylene metal-cutting, itself and root are disconnected.With Chain block steel pipe column is connected with sliding rail by wire rope at pipe column lower end then, utilize pipe column lower end Chain block pulling force forward as main pulling force, sliding friction between track and the steel plate makes the slippage forward of strutting system integral body, the steel pipe column top is connected with the bridge pier block with steel pipe column with Chain block by wire rope, utilize pulling force that the pulling force of previous Chain block cooperates pipe column lower end towing bracket system forward, utilize simultaneously that the pulling force of a Chain block plays buffering and balance behind the top, up and down with joint efforts with the integral support system forward the steady slippage of short distance up to assigned address.
The present invention adopts following method to realize the floor steel pipe column bracket integral shift, and its step comprises:
The first step, preparation:
Ground to cast-in-place section following boundary of works area of end bay is handled, and fluid concrete enlarges basis 1, and presses the pre-buried a lot of leveling of design attitude bearing pre-embedded steel slab 3 and two pre-embedded steel slabs 2 to be shifted.
After cast-in-place section tensioning construction of the first half range end bay finishes, support top template downward modulation joint piece is unloaded, support top template and concrete are broken away from, remove the web template.
In second step, measure absolute altitude:
Measure the basic 1 top mark height of expansion, determine sliding rail 5 end face absolute altitudes.
In the 3rd step, slot four steel pipe column 11 bottoms:
According to the end face absolute altitude of sliding rail 5 and the height of sliding rail 5, symmetrical grooving on sliding rail position, four steel pipe columns, 11 bottom.
The 4th step, the welding of slippage steel plate 20:
After slippage steel plate 20 passed steel pipe column 11, its bilateral symmetry was stretched out each 20cm of steel pipe column, and with slippage steel plate 20 by stiffened panel 21 and steel pipe column notch upper end firm welding.
The 5th step, attachment rail leveling bearing 4 and two sliding rails 5:
Attachment rail leveling bearing 4 and two sliding rails 5, and with track leveling bearing 4 and leveling bearing pre-embedded steel slab 3 welding that enlarge on the basis 1, simultaneously that track leveling bearing 4 is fixing with the welding of sliding rail two ends.
The 6th step, the installation of Chain block mechanism:
1. Chain block mechanism is installed at front side below strutting system or rear side place:
Front side below strutting system or rear side place, its right side arrange one group of Chain block mechanism that is made of Chain block wire rope 10, front haulage Chain block 9, wire rope support carriers 7 and haulage cable 6.Wait that with what an end span of haulage cable 6 was crossed wire rope support carriers 7 and sliding rail 5 moving direction one end (the right-hand member head of sliding rail 5) is connected; The Chain block steel wire loop is on the steel pipe column 11 in left side; The front haulage Chain block catches on the other end, the Chain block wire rope of haulage cable respectively by two hooks 8 that are attached thereto.The wire rope support carriers is installed on the front end of sliding rail 5, in order to the supporting traction wire rope.
2. Chain block mechanism is installed at front side above strutting system or rear side place:
Front side above strutting system or rear side place, its right side arrange one group by last haulage cable 13, on draw the Chain block mechanism that Chain block 14 and wire rope 15 constitute, last haulage cable is enclosed within on the positive stop 12, steel wire loop on the steel pipe column 11 on right side, on draw Chain block and catch on haulage cable, wire rope respectively by two hooks that are attached thereto.Place, front side above strutting system, its left side arrange one group by preceding buffer rope 16, on cushion the Chain block mechanism that Chain block 17 and back buffer rope 18 constitute, preceding buffer rope is enclosed within on the backstop 19, back buffer rope be enclosed within the left side steel pipe column 11 on, on cushion Chain block by two hooks that are attached thereto catch on respectively preceding buffer rope, the back buffer rope.
The 7th step, notch about the lower end edge of four steel pipe columns is cut off steel pipe column with oxyacetylene metal-cutting, it is separated with expansion basis 1.
The 8th step, the enforcement of floor steel pipe column bracket of bridge end bay closure section construction integral slipping:
The workman is assigned as 4 groups, each two groups up and down (promptly two sliding rail 5 places each two groups), below two groups of workmans spur front haulage Chain block 9 simultaneously forward, one group of workman of upper front spurs traction Chain block 14 forward, one group of workman of while upper back spurs slow letting go and draws cucurbit 17 slowly to loosen, and guarantees that floor steel pipe column bracket steadily progressively moves forward.During operation, four groups of workmans will act in agreement up and down, carry out simultaneously.
The 9th step, treat that steel pipe column 11 is displaced to assigned address after, with its with enlarge basis 1 pre-embedded steel slab 2 welding positioning stablities to be shifted.
Through above-mentioned steps, make of the work of whole floor steel pipe column bracket from a side integral shift of bridge to opposite side.
Claims (9)
1. floor steel pipe column bracket of bridge end bay closure section construction integral slide device, it is characterized in that this device comprises expansion basis (1), two sliding rails (5), slippage steel plate (20), stand and haulage gear, wherein: two sliding rails (5) are arranged symmetrically in and enlarge on the basis (1), be provided with two blocks of slippage steel plates (20) above every sliding rail, this slippage steel plate moves on sliding rail under the effect of haulage gear; Every sliding rail is supported on below by a plurality of track leveling bearings (4) and enlarges on the basis (1), and these bearings have the leveling effect, makes the whole piece sliding rail be horizontal arrangement and is enlarging on the basis (1).
2. floor steel pipe column bracket of bridge end bay closure section construction integral slide device according to claim 1 is characterized in that: described stand is provided with four steel pipe columns (11), their rectangular or square standing on the left part that enlarges basis (1); Connecting rod oblique with many or lateral arrangement links to each other between the adjacent steel tubing string, in order to increase intensity, rigidity and the stability of steel pipe column; Every pipe column lower end is fixed on the sliding rail; Form integrated support support sliding support bearing system thus.
3. according to the described floor steel pipe column bracket of bridge end bay closure section construction integral slide device of claim 2, it is characterized in that: described four steel pipe columns (11) lower end adopts following method to be fixed on the sliding rail (5):
Have the notch that passes for sliding rail (5) at every pipe column lower end, in order to fixing steel pipe column, and be stiffened panel (21) at the reinforcement steel plate that notch is passed in notch welding suitable for reading, form integrated support support sliding support bearing system, track install and fix finish after, open place suitable for reading at pipe column lower end four steel pipe columns below the notch are cut off with oxyacetylene metal-cutting, itself and root are disconnected; With Chain block steel pipe column is connected with sliding rail by wire rope at pipe column lower end then, utilizes pipe column lower end Chain block pulling force forward to make the slippage forward of strutting system integral body as the sliding friction between main pulling force, sliding rail and the slippage steel plate (20);
The steel pipe column top is connected with the bridge pier block with steel pipe column with Chain block by wire rope, utilize pulling force that the pulling force of previous Chain block cooperates pipe column lower end towing bracket system forward, utilize simultaneously that the pulling force of a Chain block plays buffering and balance behind the top, formation makes the strutting system integral body steady slippage of short distance making a concerted effort up to assigned address forward, with Chain block steel pipe column is connected with sliding rail by wire rope at pipe column lower end then, the steel pipe column top is connected with the bridge pier block with steel pipe column with Chain block by wire rope.
4. according to the described floor steel pipe column bracket of bridge end bay closure section construction integral slide device of claim 3, it is characterized in that: after slippage steel plate (20) passes steel pipe column, its bilateral symmetry is stretched out each 20cm of steel pipe column, and by stiffened panel (21) and steel pipe column notch upper end firm welding.
5. according to the described floor steel pipe column bracket of bridge end bay closure section construction integral slide device of claim 1, it is characterized in that: described haulage gear is made up of two cover Chain block systems, they be symmetrically distributed in two sliding rails and the steel pipe column (11) that is attached thereto on; Every cover Chain block system is provided with two groups of Chain block mechanisms, wherein, one group of Chain block Distribution of Institutions both sides above strutting system, the remaining side of one group of Chain block arrangement of mechanism below strutting system, every group of Chain block mechanism is made up of Chain block and wire rope.
6. according to claim 1 or 3 or 5 described floor steel pipe column bracket of bridge end bay closure section construction integral slide devices, it is characterized in that: place, inside on the expansion basis (1) below sliding rail (5), a plurality of equally distributed pre-embedded steel slabs to be shifted (2) and two leveling bearing pre-embedded steel slabs (3) are housed, and two leveling bearing pre-embedded steel slabs are distributed in the two ends that enlarge basis (1).
7. according to the described floor steel pipe column bracket of bridge end bay closure section construction integral slide device of claim 6, it is characterized in that: described leveling bearing pre-embedded steel slab (3) is and the welding of track leveling bearing (4) lower end that track leveling bearing (4) upper end is fixing with the welding of sliding rail (5) lower end.
8. floor steel pipe column bracket of bridge end bay closure section construction integral slipping method, it is characterized in that: steel pipe column is connected with sliding rail with Chain block by wire rope at pipe column lower end, utilize pipe column lower end Chain block pulling force forward as main pulling force, sliding friction between track and the steel plate makes the slippage forward of strutting system integral body, the steel pipe column top is connected with the bridge pier block with steel pipe column with Chain block by wire rope, utilize pulling force that the pulling force of previous Chain block cooperates pipe column lower end towing bracket system forward, utilize simultaneously that the pulling force of a Chain block plays buffering and balance behind the top, up and down with joint efforts with the integral support system forward the steady slippage of short distance up to assigned address.
9. described according to Claim 8 floor steel pipe column bracket of bridge end bay closure section construction integral slipping method is characterized in that adopting following method to realize the floor steel pipe column bracket integral shift, and its step comprises:
The first step, preparation:
Ground to cast-in-place section following boundary of works area of end bay is handled, and fluid concrete enlarges basis (1), and presses the pre-buried a lot of leveling of design attitude bearing pre-embedded steel slab (3) and two pre-embedded steel slabs to be shifted (2);
After cast-in-place section tensioning construction of the first half range end bay finishes, support top template downward modulation joint piece is unloaded, support top template and concrete are broken away from, remove the web template;
In second step, measure absolute altitude:
Measure expansion basis (1) top mark height, determine sliding rail (5) end face absolute altitude;
In the 3rd step, slot in four steel pipe columns (11) bottom:
According to the end face absolute altitude of sliding rail (5) and the height of sliding rail (5), symmetrical grooving on sliding rail position, four steel pipe columns (11) bottom;
The 4th step, the welding of slippage steel plate (20):
After slippage steel plate (20) passed steel pipe column (11), its bilateral symmetry was stretched out each 20cm of steel pipe column, and with slippage steel plate (20) by stiffened panel (21) and steel pipe column notch upper end firm welding;
The 5th step, attachment rail leveling bearing (4) and two sliding rails (5):
Attachment rail leveling bearing (4) and two sliding rails (5), and with track leveling bearing (4) and leveling bearing pre-embedded steel slab (3) welding that enlarges on the basis (1), simultaneously that track leveling bearing (4) is fixing with the welding of sliding rail two ends;
The 6th step, the installation of Chain block mechanism:
A. Chain block mechanism is installed at front side below strutting system or rear side place:
Front side below strutting system or rear side place, its right side arrange one group of Chain block mechanism that is made of Chain block wire rope (10), front haulage Chain block (9), wire rope support carriers (7) and haulage cable (6).Wait that with what an end span of haulage cable (6) was crossed wire rope support carriers (7) and sliding rail (5) moving direction one end (the right-hand member head of sliding rail (5)) is connected; The Chain block steel wire loop is on the steel pipe column (11) in left side; The front haulage Chain block catches on the other end, the Chain block wire rope of haulage cable respectively by two hooks (8) that are attached thereto.The wire rope support carriers is installed on the front end of sliding rail (5), in order to the supporting traction wire rope;
B. Chain block mechanism is installed at front side above strutting system or rear side place:
Front side above strutting system or rear side place, its right side arrange one group by last haulage cable (13), on draw the Chain block mechanism that Chain block (14) and wire rope (15) constitute, last haulage cable is enclosed within on the positive stop (12), steel wire loop on the steel pipe column (11) on right side, on draw Chain block and catch on haulage cable, wire rope respectively by two hooks that are attached thereto.Place, front side above strutting system, its left side arrange one group by preceding buffer rope (16), on cushion the Chain block mechanism of Chain block (17) and back buffer rope (18) formation, preceding buffer rope is enclosed within on the backstop (19), back buffer rope be enclosed within the left side steel pipe column (11) on, on cushion Chain block by two hooks that are attached thereto catch on respectively preceding buffer rope, the back buffer rope;
The 7th step, notch about the lower end edge of four steel pipe columns is cut off steel pipe column with oxyacetylene metal-cutting, it is separated with expansion basis (1);
The 8th step, the enforcement of floor steel pipe column bracket of bridge end bay closure section construction integral slipping:
The workman is assigned as 4 groups, each two groups up and down, below two groups of workmans spur front haulage Chain block (9) simultaneously forward, one group of workman of upper front spurs traction Chain block (14) forward, one group of workman of while upper back spurs slow letting go and draws cucurbit (17) slowly to loosen, and guarantees that floor steel pipe column bracket steadily progressively moves forward.During operation, four groups of workmans will act in agreement up and down, carry out simultaneously;
The 9th step, treat that steel pipe column (11) is displaced to assigned address after, with its with enlarge basis (1) pre-embedded steel slab to be shifted (2) welding positioning stablity;
Through above-mentioned steps, make of the work of whole floor steel pipe column bracket from a side integral shift of bridge to opposite side.
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| CN200910209251XA CN101713170B (en) | 2009-10-27 | 2009-10-27 | Integral slide device and method of floor steel pipe column bracket of bridge end bay closure section construction |
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| CN200910209251XA CN101713170B (en) | 2009-10-27 | 2009-10-27 | Integral slide device and method of floor steel pipe column bracket of bridge end bay closure section construction |
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2009
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