CN104328745B - Across the rotary body device of the little bridge beam of high ferro and construction method thereof on a kind of low-angle - Google Patents
Across the rotary body device of the little bridge beam of high ferro and construction method thereof on a kind of low-angle Download PDFInfo
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- CN104328745B CN104328745B CN201410613113.9A CN201410613113A CN104328745B CN 104328745 B CN104328745 B CN 104328745B CN 201410613113 A CN201410613113 A CN 201410613113A CN 104328745 B CN104328745 B CN 104328745B
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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
- E01D21/08—Methods or apparatus specially adapted for erecting or assembling bridges by rotational movement of the bridge or bridge sections
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Abstract
The invention discloses the rotary body device across the little bridge beam of high ferro on a kind of low-angle, described bridge comprises across the transom pier of existing line and the girder that is placed in along road length direction on transom pier, described transom pier comprise be arranged on existing line both sides transom pier pier stud and transom pier pier stud on bent cap, described transom pier is arranged along road length direction parallel interval, it is characterized in that, described rotary body device comprises: the chute that girder soffit is longitudinally arranged along girder and be arranged on the bent cap upper surface slideway corresponding with chute, ball hinged support and can by the thrustor of girder along slideway movement.The present invention also provides a kind of construction method utilized across the rotary body device of the little bridge beam of high ferro on low-angle, step is construction transom pier pier stud, construction bent cap, place that girder, girder horizontally push away, girder is turned and dismounting equipment, the carrying out that can not only realize little bridge beam stable in the process of turning is turned, difficulty of construction is little, engineering time is short, and do not affect existing line, reduce construction total cost.
Description
Technical field
The present invention relates to bridge construction technical field, refer to particularly a kind of with on little oblique angles across the rotary body device of the little bridge beam of high-speed railway and construction method thereof.
Background technology
Along with the development of railway construction in China cause, often occur on newly built railway across both wired situation.When circuit oblique angles is less, generally to realize crossing over compared with forms such as the T structure of large span or cable stayed bridges.In order to reduce the impact of these Loads of Long-span Bridges construction on circuit as much as possible, its construction method is main mainly with rotator construction.
Increasingly mature for the rotation swivel construction method of Loads of Long-span Bridges at present, largely solve a difficult problem for cross-line bridge construction.Existing rotation swivel construction method is generally; Arrange universal spherical joint between bridge bottom and bridge pier, bridge end is equipped with driving arrangement of turning, and utilizes driving arrangement to turn centered by universal spherical joint.But existing rotation swivel construction method still has certain limitation: existing rotator construction type of bridge is mainly the forms such as large-span continuous girder bridges, rigid frame bridge, cable stayed bridge, arch bridge, the construction costs of its bridge construction own is high, design difficulty large, long construction period; Its two, because existing rotation swivel construction method is all for Longspan Bridge, the tonnage of bridge construction own is comparatively large, and the manufacture of rotary body device is complicated with processing technology, rotates control accuracy requirement high in construction by swing to structure; Its three, existing rotation swivel construction method for bridge construction many employings single span span line.In order to reduce the impact of constructing on existing line, the position of bridge pier of turning needs to arrange away from existing line, but bridge pier is with both wired at a distance of far away, and bridge construction span is larger, and this contradiction is more obvious when two circuit oblique angles are less.In order to solve the problem, the rotary body device and the construction method thereof that work out a kind of cross-line bridge can arranged for little span, porous are very necessary.
Summary of the invention
Object of the present invention is exactly the deficiency that will solve above-mentioned background technology, there is provided on a kind of low-angle across the rotary body device of the little bridge beam of high ferro and construction method thereof, the carrying out making it can not only realize little bridge beam simply, easily stable in the process of turning is turned, and do not affect existing line to run, reduce construction total cost.
5 technical schemes of the present invention are: across the rotary body device of the little bridge beam of high ferro on a kind of low-angle, described bridge comprises across the transom pier of existing line and the girder that is placed in along road length direction on transom pier, described transom pier comprise be arranged on existing line both sides transom pier pier stud and transom pier pier stud on bent cap, described transom pier is arranged along road length direction parallel interval, it is characterized in that, described rotary body device comprises: be arranged on girder soffit along girder transverse direction chute and be arranged on the bent cap upper surface slideway corresponding with chute, ball hinged support and can by the thrustor of girder along slideway movement, described chute and slideway are slidably matched, described slideway is longitudinally arranged along bent cap, described slideway straightway and curved section form, described ball hinged support is arranged between end of main beam edge and the bent cap below it.
Preferably, described chute cross section is inverted U, and the slide plane of described chute inwall is equipped with stainless steel wearing plate.
Further, described slideway is the i beam that upper surface is welded with steel cushion block, described steel cushion block end face and side bonds PTFE anti-wear plate, and described PTFE anti-wear plate is corresponding with the stainless steel wearing plate of chute inwall respectively.
Preferably, described thrustor comprises the jack carrying out pushing tow above the hoist engine and girder rear bent cap that are separately positioned on and carry out above the bent cap of girder front stretching.
Preferably, described bent cap comprises bent cap body and is connected to the rear back beam at bent cap body rear, be provided with interim pier stud outside described transom pier pier stud, point-blank, described rear back beam is supported on interim pier stud the transom pier pier stud of described interim pier stud and existing line both sides.
Further, the straightway of described slideway is arranged in rear back beam, and the curved section of described slideway is arranged on bent cap body.
The present invention also provides the construction method across the rotary body device of the little bridge beam of high ferro on a kind of low-angle, it is characterized in that, comprises the following steps:
1) construction transom pier pier stud
At existing line both sides construction transom pier pier stud, outside transom pier pier stud, set up interim pier stud, the transom pier pier stud of described interim pier stud and existing line both sides on the same line;
2) construction bent cap
15 transom pier pier studs in existing line side and interim pier stud use incremental launching method bent cap, described bent cap comprises rear back beam and bent cap body, described back erection is on interim pier stud, described transom pier pier stud and bent cap form transom pier, and described transom pier is arranged along road length direction parallel interval;
3) girder is placed
Girder is moved on bent cap, place along road length direction, at girder soffit, the chute along girder lateral arrangement is installed, along the longitudinal upper surface of bent cap, the slideway corresponding with chute is installed, described slideway is made up of the straightway be connected and curved section, and installing in bent cap end can by the thrustor of girder along slideway movement;
4) girder is horizontal pushes away
Utilize thrustor that girder is carried out lateral pushing along slideway straightway;
5) girder is turned
Arrive after slideway straightway end until girder one end, the slideway on the bent cap be positioned at below end of main beam is removed, and below end of main beam edge and its, between bent cap, ball hinged support is set; Utilize thrustor that girder is slided around the ramp curve section of ball hinged support along all the other bent caps;
6) equipment is removed
Turn to design attitude until girder, remove slideway, chute, ball hinged support and rear back beam, permanent bearing is installed, girder is fallen within permanent bearing.
Preferably, on described bent cap, straightway and curved section junction are provided with temporary spacing block, and described bent cap upper curve section end is provided with limited block.
Preferably, step 2) in each transom pier rear back beam between set up support along road length direction.
Preferably, described girder be on support segmented assembly steel box-girder integrally or on support the cast-in-place concrete box girder completed
The invention has the beneficial effects as follows:
1. little bridge girder construction is from heavy and light, directly carries out horizontally pushing away and turning on transom pier bent cap, and the large-tonnage without the need to complexity is turned incremental launching device, and difficulty of construction is little.
2. girder can adopt steel box-girder or concrete box girder, after the assembled or concrete beam casting and constructing of girder steel completes on the falsework in face, line side, to be pushed away and the mode such as to turn is transferred to design attitude by horizontal again, without the need to closed existing line in work progress, whole process is less to existing high ferro circuit Influence to operation.
3. with low cost, considerably increase the construction efficiency across high-speed railway bridge; Do not affect the operation of existing line simultaneously, there is comparatively wide application prospect and larger economic benefit.
Accompanying drawing explanation
Fig. 1 is transom pier construction schematic diagram;
Fig. 2 is transom pier structural representation;
Fig. 3 is existing line schematic diagram;
Fig. 4 is that schematic diagram placed by girder
To be that girder is horizontal push away schematic diagram to Fig. 5
Fig. 6 is that girder is turned schematic diagram
Fig. 7 is chute and slideway structure schematic diagram.
Wherein: 1. back beam 13. bent cap body 14. nose girder 15. i beam 16. support 17. incremental launching device after interim pier stud 11. existing line 12. of transom pier 2. girder 3. transom pier pier stud 4. bent cap 5. chute 6. slideway 7. ball hinged support 8. hoist engine 9. jack 10..
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Across the rotary body device of the little bridge beam of high ferro on a kind of low-angle, as shown in Figure 1-2, transom pier 1 comprise be arranged on existing line 11 both sides transom pier pier stud 3 and transom pier pier stud 3 on bent cap 4, transom pier 1 is arranged along road length direction parallel interval, road length direction is existing line 11 length direction, and girder 2 is placed on bent cap 4 along road length direction.Bent cap 4 comprises bent cap body 13 and is connected to the rear back beam 12 at bent cap body 13 rear, interim pier stud 10 is provided with outside transom pier pier stud 3, point-blank, rear back beam 12 is erected on interim pier stud 10 the transom pier pier stud 3 of interim pier stud 10 and existing line 11 both sides.Existing line 11 and girder 2 designs turns position as shown in Figure 3, girder 2 low-angle is girder 2 design across the dotted line be inclined cross on existing line 11 in existing line 11, figure and turns position.As shown in Figure 4, rotary body device comprises: girder 2 soffit along girder 2 horizontally set chute 5 and be arranged on the bent cap 4 upper surface slideway 6 corresponding with chute 5, ball hinged support 7 and can by the thrustor of girder 2 along slideway 6 movement.Chute 5 and slideway 6 are slidably matched, and slideway 6 is made up of the straightway be connected and curved section, and ball hinged support 7 is arranged between girder 2 end edge and the bent cap below it 4.
As shown in Figure 7, chute 5 cross section is inverted U, and chute 5 inwall is welded with stainless steel wearing plate.Slideway 6 is welded with the i beam 15 of steel cushion block for upper surface, and steel cushion block end face and side bonds PTFE anti-wear plate, PTFE anti-wear plate scribbles butter.As shown in Figure 2, thrustor is comprise the jack 9 that pusher is carried out at the hoist engine 8 that is separately positioned on and carries out stretching in girder front and girder rear.The straightway of slideway 6 is arranged in rear back beam 12, and the curved section of slideway 6 is arranged on bent cap body 13.Bent cap 4 sliding way 6 straightway and curved section junction are provided with temporary spacing block, and bent cap 4 sliding way 6 curved section end is provided with limited block.When girder 2 relies on thrustor to slide into curved section junction along slideway 6 straightway, the slideway 6 be positioned on the bent cap 4 of girder 2 end is removed and ball hinged support 7 is installed.
Concrete rotation swivel construction method comprises the following steps:
1) construction transom pier pier stud
As shown in Figure 1, at the ancillary facility such as working platform of existing line 11 both sides construction steel structure gate-type pier foundation, pier stud, capital, form transom pier pier stud 3, outside transom pier pier stud 3, set up interim pier stud 10, the transom pier pier stud 3 of interim pier stud 10 and existing line 11 both sides on the same line;
2) construction bent cap
Transom pier pier stud 3 with interim pier stud 10 install incremental launching device 17, and lifts bent cap 4.Bent cap 4 comprises bent cap body 13 and bent cap body 13 rear back beam 12 below, rear back beam 12 is erected on interim pier stud 10, bent cap body 13 is provided with nose girder 14 above, as shown in Figure 2, transom pier pier stud 3 in existing line 11 side and interim pier stud 10 use incremental launching device 17 multi-point pushing method pushing tow bent cap 4, after bent cap 4 pushing tow puts in place, remove the incremental launching device 17 on each pier stud top, remove nose girder 14.Transom pier pier stud 3 and bent cap 4 form transom pier 1, and transom pier 1 is arranged along road length direction parallel interval, and consolidation transom pier pier stud 3 and bent cap 4 complete transom pier 1 and construct.1# ~ 6# bent cap 4 as shown in Figure 3, wherein the 1# bent cap 4 at most edge is only arranged on the side of existing line 11, and between each rear back beam 12, set up the support 16 along road length direction, support 16 is as operation platform.
3) girder is placed
Support 16 width is greater than girder 2 width, completes assembled on support 16 for girder 2.Girder 2 can be steel work girder or prestressed reinforced concrete girder, and steel work girder segmental hoisting to support 16 carries out assembled and has welded, prestressed reinforced concrete girder forms for building on support 16.Middle girder 2 of the present invention is segmentation steel box-girder, steel box-girder hoisting bracket 16 carries out assembled and has welded.As shown in Figure 4, girder 2 is moved on bent cap 4, place along road length direction, at girder 2 soffit, the chute 5 longitudinal and vertical with girder 2 along girder 2 is installed, as shown in Figure 7, chute 5 cross section is inverted U, but be not only limited to U-shaped, also can be V-type or trapezoidal, chute 5 inwall is welded with stainless steel wearing plate, at bent cap 4 upper surface, the slideway 6 corresponding with chute 5 is installed, slideway 6 is welded with the i beam 15 of steel cushion block for upper surface, steel cushion block end face and side bonds PTFE anti-wear plate, oiling butter on PTFE anti-wear plate, the stainless steel wearing plate of chute 5 and the PTFE anti-wear plate of slideway 6 end face closely connected.Slideway 6 is made up of the straightway be connected and curved section, and the straightway of its middle slideway 6 is in rear back beam 12, and curved section is on bent cap body 13, and on bent cap 4, straightway and curved section junction are provided with temporary spacing block.Installing in bent cap 4 end can by the thrustor of girder 2 along slideway 6 movement, as shown in Figure 2, thrustor is the hoist engine 8 and the jack 9 that are separately positioned on bent cap 4 two ends, and wherein hoist engine 8 stretches in the front of girder, and jack 9 carries out lateral pushing at the rear of girder 2.
4) girder is horizontal pushes away
Utilize thrustor that girder 2 is carried out lateral pushing along slideway 6 straightway; Girder 2 position as shown in Figure 4.1 ~ 6# bent cap 4 carries out synchronous push to girder 2 simultaneously, and the hoist engine 8 in its middle girder 2 front stretches to it, and the jack 9 at girder 2 rear carries out lateral pushing to it, makes girder 2 arrive position as shown in Figure 5.Because lateral pushing is irreversible procedure, before pushing tow, need straightway and curved section junction on slideway 6 as shown in Figure 5 that temporary spacing block is set, prevent girder 2 from crossing precalculated position, cause end that ball hinged support 7 cannot be installed.
5) girder is turned
After girder 2 arrives position shown in Fig. 5, with vertical jack by girder 2 jacking, remove the slideway 6 on 1# bent cap 4, in 1# bent cap 4 front ends, ball hinged support 7 is installed.Remove temporary spacing block, implement girder 2 rotator construction simultaneously.As shown in Figure 6, start each hoist engine 8 and girder 2 is slided along slideway 6 curved section around ball hinged support 7, each hoist engine 8 rotating speed is directly proportional with the distance of corresponding slideway 6 on its bent cap 4 to ball hinged support 7.At slideway 6 curved section end, mounting limit block, prevents girder from dropping from ways-end.In the process of turning, need examine, when chute 5 is close to end limited block bottom girder 2, each hoist engine 8 should be stopped immediately.Open hoist engine 8 at a slow speed, make girder 2 arrive design attitude.
6) equipment is removed
Turn to design attitude until girder 2, remove slideway 6, chute 5, ball hinged support 7 and rear back beam 12, permanent bearing is installed, girder 2 is fallen within permanent bearing and complete construction.
Claims (10)
1. on a low-angle across the rotary body device of the little bridge beam of high ferro, described bridge comprises across the transom pier (1) of existing line (11) and the girder (2) that is placed in along road length direction on transom pier (1), described transom pier (1) comprise be arranged on existing line (11) both sides transom pier pier stud (3) and transom pier pier stud (3) on bent cap (4), described transom pier (1) is arranged along road length direction parallel interval, it is characterized in that, described rotary body device comprises: be arranged on girder (2) soffit along the horizontal chute (5) of girder (2) be arranged on bent cap (4) the upper surface slideway (6) corresponding with chute (5), ball hinged support (7) and can by the thrustor of girder (2) along slideway (6) movement, described chute (5) and slideway (6) are slidably matched, described slideway (6) is longitudinally arranged along bent cap (4), described slideway (6) is made up of straightway and curved section, described ball hinged support (7) is arranged between girder (2) end edge and the bent cap below it (4).
2. on low-angle as claimed in claim 1 across the rotary body device of the little bridge beam of high ferro, it is characterized in that, described chute (5) cross section is inverted U, and the slide plane of described chute (5) inwall is equipped with stainless steel wearing plate.
3. on low-angle as claimed in claim 2 across the rotary body device of the little bridge beam of high ferro, it is characterized in that, described slideway (6) is welded with the i beam (15) of steel cushion block for upper surface, described steel cushion block end face and side bonds PTFE anti-wear plate, described PTFE anti-wear plate is corresponding with the stainless steel wearing plate of chute (5) inwall respectively.
4. on low-angle as claimed in claim 1 across the rotary body device of the little bridge beam of high ferro, it is characterized in that, described thrustor comprises the jack (9) carrying out pushing tow above the hoist engine (8) and girder (2) rear bent cap (4) that are separately positioned on and carry out above stretching in girder (2) front bent cap (4).
5. on low-angle as claimed in claim 1 across the rotary body device of the little bridge beam of high ferro, it is characterized in that, described bent cap (4) comprises bent cap body (13) and is connected to the rear back beam (12) at bent cap body (13) rear, described transom pier pier stud (3) outside is provided with interim pier stud (10), point-blank, described rear back beam (12) is supported on interim pier stud (10) the transom pier pier stud (3) of described interim pier stud (10) and existing line (11) both sides.
6. on low-angle as claimed in claim 5 across the rotary body device of the little bridge beam of high ferro, it is characterized in that, the straightway of described slideway (6) is arranged in rear back beam (12), and the curved section of described slideway (6) is arranged on bent cap body (13).
7. utilize the construction method across the rotary body device of the little bridge beam of high ferro on the low-angle described in claim 1, it is characterized in that, comprise the following steps:
1) construction transom pier pier stud
In existing line (11) both sides construction transom pier pier stud (3), at transom pier pier stud (3) the outside interim pier stud of erection (10), the transom pier pier stud (3) of described interim pier stud (10) and existing line (11) both sides on the same line;
2) construction bent cap
Transom pier pier stud (3) in existing line (11) side and interim pier stud (10) upper use incremental launching method bent cap (4), described bent cap (4) comprises rear back beam (12) and bent cap body (13), described rear back beam (12) is erected on interim pier stud (10), described transom pier pier stud (3) and bent cap (4) form transom pier (1), and described transom pier (1) is arranged along road length direction parallel interval;
3) girder is placed
Girder (2) is moved on bent cap (4), place along road length direction, at girder (2) soffit, the chute (5) along girder (2) lateral arrangement is installed, along bent cap (4) longitudinal upper surface, the slideway (6) corresponding with chute (5) is installed, described slideway (6) is made up of the straightway be connected and curved section, and installing in bent cap (4) end can by the thrustor of girder (2) along slideway (6) movement;
4) girder is horizontal pushes away
Utilize thrustor that girder (2) is carried out lateral pushing along slideway (6) straightway;
5) girder is turned
Arrive after slideway (6) straightway end until girder (2) end, the slideway (6) that will be positioned on the bent cap (4) below girder (2) end is removed, and is arranged ball hinged support (7) in girder (2) end edge and below it between bent cap (4); Utilize thrustor that girder (2) is slided around slideway (6) curved section of ball hinged support (7) along all the other bent caps;
6) equipment is removed
Turn to design attitude until girder (2), remove slideway (6), chute (5), ball hinged support (7) and rear back beam (12), permanent bearing is installed, girder (2) is fallen within permanent bearing.
8. construction method as claimed in claim 7, it is characterized in that, described bent cap (4) sliding way (6) straightway and curved section junction are provided with temporary spacing block, and described bent cap (4) sliding way (6) curved section end is provided with limited block.
9. construction method as claimed in claim 7, is characterized in that, described step 2) in each transom pier (1) rear back beam (12) between set up support (16) along road length direction.
10. construction method as claimed in claim 9, is characterized in that, described girder (2) be the upper segmented assembly of support (16) steel box-girder integrally or on support (16) the cast-in-place concrete box girder completed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410613113.9A CN104328745B (en) | 2014-11-04 | 2014-11-04 | Across the rotary body device of the little bridge beam of high ferro and construction method thereof on a kind of low-angle |
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|---|---|---|---|
| CN201410613113.9A CN104328745B (en) | 2014-11-04 | 2014-11-04 | Across the rotary body device of the little bridge beam of high ferro and construction method thereof on a kind of low-angle |
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| CN104328745B true CN104328745B (en) | 2016-04-13 |
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| CN106758831B (en) * | 2016-12-14 | 2018-09-21 | 中铁十九局集团第二工程有限公司 | Across railway bridge swivel continuous beam construction method |
| CN106758867B (en) * | 2017-01-18 | 2018-06-26 | 中电建路桥集团有限公司 | A kind of Bridge Rotation Construction Technique control method for fully automatic |
| CN108166400A (en) * | 2018-02-12 | 2018-06-15 | 中国铁路设计集团有限公司 | A kind of great cantilever plane swivel structure and its construction method |
| CN109537477B (en) * | 2018-12-11 | 2021-03-02 | 北京市政路桥股份有限公司 | Construction method for dismantling old beam by portal frame |
| CN110593105A (en) * | 2019-09-12 | 2019-12-20 | 中铁武汉勘察设计研究院有限公司 | Rotation and translation phase-shifting combined incremental launching type rotation translation system and bridge construction method |
| CN112854021A (en) * | 2021-02-02 | 2021-05-28 | 中铁二十四局集团安徽工程有限公司 | Rotary in-place construction method for crossing bridge |
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