CN110172929A - A kind of concrete box beam flange plate cutting disassembling stabilising arrangement and cutting disassembling method - Google Patents
A kind of concrete box beam flange plate cutting disassembling stabilising arrangement and cutting disassembling method Download PDFInfo
- Publication number
- CN110172929A CN110172929A CN201910525675.0A CN201910525675A CN110172929A CN 110172929 A CN110172929 A CN 110172929A CN 201910525675 A CN201910525675 A CN 201910525675A CN 110172929 A CN110172929 A CN 110172929A
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- flange plate
- cutting
- box beam
- stabilising arrangement
- chassis
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- 238000005520 cutting process Methods 0.000 title claims abstract description 82
- 230000003019 stabilising Effects 0.000 title claims abstract description 40
- 239000000725 suspension Substances 0.000 claims abstract description 14
- 238000010276 construction Methods 0.000 claims abstract description 10
- 230000011218 segmentation Effects 0.000 claims abstract description 7
- 238000004642 transportation engineering Methods 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000005516 engineering process Methods 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 230000036316 preload Effects 0.000 claims 1
- 239000002689 soil Substances 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 238000003466 welding Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 3
- 230000001681 protective Effects 0.000 abstract description 2
- 230000002349 favourable Effects 0.000 description 4
- 238000005422 blasting Methods 0.000 description 3
- 230000003068 static Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 210000001138 Tears Anatomy 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
Abstract
The present invention provides a kind of concrete box beam flange plate cutting disassembling stabilising arrangement and cutting disassembling methods, the stabilising arrangement includes chassis, cantilever truss beam and suspension system, the middle part of the cantilever truss beam is connect by chassis with box beam, and the two sides of the cantilever truss beam are connect by suspension system with flange plate；Sliding system is provided between the chassis and box beam.Concrete anti-collision guard bar and flange plate are cut and disassembled the present invention as a whole, using direction across bridge piecemeal, along bridge to segmentation, and the construction process for removing of firm using cutting steady rest cutting machine cutting, flange plate allocation and transportation, have the advantages that strong applicability, good economy performance, energy-efficient, environmentally protective.
Description
Technical field
The invention belongs to ring road Demolishing Technology fields, and in particular to a kind of concrete box beam flange plate cutting disassembling is steady
Determine device and cutting disassembling method.
Background technique
With the high speed development of national economy and communication, some bridges are wanted due to not being able to satisfy existing traffic use
It asks, or technology, material and the management level when due to building in the past fall behind, and cause structure to go wrong, need to remove reconstruction.
Bridging toughening method can be divided mainly into demolition blasting and static(al) cutting disassembling at present.Demolition blasting by environmental restrictions compared with
It is more, especially across highway, across the bridge in railway, the bridge across navigation channel and downtown area, often do not have the condition of demolition blasting.
Static(al) cutting disassembling refers to the Lifting Capacity according to hanging device, is cut into bridge structure object piecemeal using cutting equipment and is easy to
The fritter of decentralization, then lifting is removed.In bridge static(al) cutting whole into sections dismounting field, for safety and structural system variation
The considerations of, it generally requires to set up a large amount of temporary supports, is divided into multiple fritters to be cut and disassembled on former bridge, still, city
The construction of overpass is built different from general bridge, and job location is frequently located in urban district busiest section, and heavy traffic around has
School, house, shopping centre etc., therefore constructing often will be by the restriction of factors.It is restricted by place, is not available large size and hangs
Standby, hoisting weight and to play hanging object size-constrained is installed, it is difficult that big section box girder is transported in city；By traffic limitation, construction time
Between need to meet and be centainly open to traffic demand；It is limited by the duration, it is desirable that speed of application is fast.
Summary of the invention
The purpose of the present invention is to provide a kind of concrete box beam flange plate cutting disassembling stabilising arrangement and cutting disassembling sides
Method, to overcome above-mentioned technological deficiency.
In order to solve the above technical problems, the technical solution adopted in the present invention is as follows:
A kind of concrete box beam flange plate cutting disassembling stabilising arrangement, the cutting disassembling stabilising arrangement are set in box beam, including
The middle part of chassis, cantilever truss beam and suspension system, the cantilever truss beam is connect by chassis with box beam, the cantilever truss
The two sides of beam are connect by suspension system with flange plate；Sliding system is provided between the chassis and box beam.
Further, the sliding system includes shift unit and sliding rail, and the sliding rail is along bridge longitudinal direction
It is set to the top of box beam, shift unit is fixed on chassis, and can be slided along sliding rail.
Further, the top of the chassis is connect with cantilever truss beam, the bottom both ends of chassis pass through respectively pull rod with
Box beam connection, and fastened by the first anchor bolt.
Further, the chassis includes top boom and the lower boom that is arranged in parallel in below the top boom, it is described on
Multiple vertical bars are vertically installed between chord member and lower boom, multiple vertical bars are spaced apart and connect between adjacent vertical bar by brace
It connects, the inclined direction of adjacent brace is opposite.
Further, pass through double branch I-steel connections between the top boom and cantilever truss beam；The vertical bar respectively with
Pass through double branch I-steel connections between top boom, lower boom；The shift unit is set to the lower section of lower boom.
Further, connecting rod is welded between the vertical bar and cantilever truss beam of chassis both ends end.
Further, the suspension system includes 4 sunpenders, and 4 sunpenders are symmetrically arranged two in cantilever truss beam
Side, and the upper end of the sunpender is fixed on cantilever truss beam by the second anchor bolt, the lower end of sunpender is anchored by third
Bolt is connect with flange plate.
The concrete box beam flange plate cutting disassembling method, cutting machine cutting firm using cutting disassembling stabilising arrangement,
The construction technology of flange plate allocation and transportation.
A kind of concrete box beam flange plate cutting disassembling method, includes the following steps,
S1. it removes block to divide: using direction across bridge piecemeal, vertical principle of the bridge to segmentation, drawing cutting horizontal line in box beam and cutting is vertical
Line；
S2. it drills: boring chassis tie rod hole, flange plate lifting eye and cutting disassembling stabilising arrangement anchor hole according to position of centre of gravity；
S3. assembled cutting disassembling stabilising arrangement: first lifting chassis, will be opened up on tie rod hole and box beam that chassis lower end is opened up
Anchor hole contraposition after, penetrate pull rod from the bottom up, and with the first anchor bolt make-up；Then installation is welded in the upper end of chassis
Cantilever truss beam, finally installs suspension system；
S4. cutting machine is cut: after cutting disassembling stabilising arrangement installs, suitably pre-tightening pull rod, while in flange plate lifting eye
Wirerope is penetrated, then cuts flange plate using cutting machine, when cutting operation, first cuts direction across bridge cutting seam, it is rear to cut vertical bridge
It is stitched to cutting；
S5. flange plate is allocated and transported: after flange plate cuts off cabinet, being hung to designated place by crane and is carried out abolishing cleaning；
S6. cutting disassembling stabilising arrangement sliding: after the completion of flange plate is removed, the first anchor bolt of chassis bottom is released, is passed through
The cutting disassembling stabilising arrangement is moved to next dismounting segment along sliding rail by shift unit.
Further, the principle of direction across bridge piecemeal refers to according to box beam chamber number to box beam transverse direction piecemeal in the step S1,
Each chamber is one piece, and cutting horizontal line is drawn between concrete guardrail and flange plate and box beam；Vertical bridge refers to the principle of segmentation
According to live loop wheel machine crane capacity, across footpath and pier position deployment scenarios determine longitudinally cutting line along the longitudinal direction of bridge.
Beneficial effects of the present invention are as follows:
1, strong applicability: the present invention can reduce the requirement to hanging device crane capacity using longitudinal divisions and lateral piecemeal, drop
The difficulty of low big segment transport, is more suitable for that spanning construction space is narrow, the concrete box girder of job location ambient enviroment complexity
The dismounting of flange plate.
2, good economy performance: flange plate is divided bulk lifting to remove by the present invention, and cutting quantity is few, can greatly save cost input；
And the cutting disassembling stabilising arrangement can be slid by shift unit along bridge longitudinal direction, can be used continuously, be reduced equipment investment.
3, energy-efficient: cutting disassembling stabilising arrangement of the invention uses shaped steel combination structure, and most of manufacture processing exists
Factory completes, and is only assembled at the scene, can reduce the time of site operation to greatest extent, takes and tears open conveniently, and can be recycled,
Have the characteristics that energy-efficient.
4, environmentally protective: the method that the present invention uses, work progress is pollution-free, and machinery equipment noise is small, to surrounding enviroment
It influences small.
Detailed description of the invention
Fig. 1 is the schematic layout pattern that stabilising arrangement direction across bridge is cut and disassembled；
Fig. 2 be cut and disassembled stabilising arrangement indulge bridge to schematic layout pattern；
Description of symbols:
1, box beam, 2, flange plate, 3, chassis, 3.1, top boom, 3.2, lower boom, 3.3, vertical bar, 3.4, brace, 4, cantilever truss
Beam, 5, sunpender, the 6, first anchor bolt, the 7, second anchor bolt, 8, third anchor bolt, 9, pull rod, 10, sliding device, 11, cunning
Move track, 12, connecting rod.
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this specification
Revealed content is understood other advantages and efficacy of the present invention easily.
It should be noted that term " first ", " second ", " third " are used for description purposes only, and should not be understood as instruction or
Imply relative importance.
Description introduces exemplary embodiments of the present invention, however, the present invention can use many different forms
Implement, and be not limited to the embodiment described herein, providing these embodiments is at large and fully disclose this
Invention, and the scope of the present invention is sufficiently conveyed to person of ordinary skill in the field.For the example being illustrated in the accompanying drawings
Term in property embodiment is not limitation of the invention.
Unless otherwise indicated, term (including scientific and technical terminology) used herein has person of ordinary skill in the field
It is common to understand meaning.Further it will be understood that with the term that usually used dictionary limits, should be understood as and its
The context of related fields has consistent meaning, and is not construed as Utopian or too formal meaning.
Embodiment 1
As shown in Figure 1, stabilising arrangement is cut and disassembled in a kind of concrete box beam flange plate, which is set to case
On beam 1 comprising the middle part of chassis 3, cantilever truss beam 4 and suspension system, the cantilever truss beam 4 passes through chassis 3 and box beam 1
The two sides of connection, the cantilever truss beam 4 are connect by suspension system with flange plate 2；It is arranged between the chassis 3 and box beam 1
There is sliding system.
Concrete anti-collision guard bar and flange plate are cut and disassembled the present invention as a whole, direction across bridge piecemeal, along bridge to
Segmentation, firm using cutting steady rest, cutting machine cutting, flange plate allocation and transportation construction process for removing, upstream and downstream side ring road guardrail
Carried out simultaneously with flange plate Demolition Construction, according to from high to low, the right symmetrical sequence of a first from left, the side Cong Zhuqiao toward access bridge side by cross
It is removed.
Embodiment 2
On the basis of the above embodiments, further, the sliding system includes shift unit and sliding rail, the sliding rail
Road is set to the top of box beam along bridge longitudinal direction, and shift unit is fixed on chassis, and can slide along sliding rail.Flange plate
After the completion of dismounting, the stabilising arrangement can slide onto next dismounting segment along bridge longitudinal direction by shift unit, to make this
Invent economical good, continuous controllable advantage.
Embodiment 3
On the basis of the above embodiments, further, the top of the chassis is connect with cantilever truss beam, the bottom two of chassis
End is connect by pull rod with box beam respectively, and is fastened by the first anchor bolt.
Further, as shown in Fig. 2, the chassis includes top boom and the lower edge that is arranged in parallel in below the top boom
Bar, is vertically installed with multiple vertical bars between the top boom and lower boom, multiple vertical bars are spaced apart and lead between adjacent vertical bar
Brace connection is crossed, the inclined direction of adjacent brace is opposite；It is welded between the vertical bar and cantilever truss beam of chassis both ends end
There is connecting rod.
Preferably, pass through double branch I-steel connections between the top boom and cantilever truss beam；The vertical bar respectively with it is upper
Pass through double branch I-steel connections between chord member, lower boom；The shift unit is set to the lower section of lower boom.
Further, the suspension system includes 4 sunpenders, and 4 sunpenders are symmetrically arranged two in cantilever truss beam
Side, and the upper end of the sunpender is fixed on cantilever truss beam by the second anchor bolt, the lower end of sunpender is anchored by third
Bolt is connect with flange plate.
The sunpender uses fining twisted steel, is hung flange plate in cantilever truss beam by anchor plate and anchor bolt
On；The pull rod also uses fining twisted steel, and chassis is fixed in box beam by setting anchor plate and anchor bolt.
Cutting disassembling stabilising arrangement stress least favorable situation of the invention is that side is unloaded, and the guardrail of 5.5m is hung in side
With flange plate cutting cube, 1.2 impact coefficient is considered, according to calculating, under least favorable working condition, cantilever truss beam and chassis
Connecting portion is least favorable point, and maximal bending moment suffered by girder is 106.56kNm at this, and work 25a fashioned iron, W=401.6cm3 then answers
Power is 132.7MPa, meets design requirement.Chassis least favorable rod piece is top boom, maximal bending moment 14.4kNm, 12.6 type of work
Steel, W=77.46cm3, then stress is 92.95MPa, meets design requirement.Therefore cutting disassembling stabilising arrangement of the present invention
Have the characteristics that safe and reliable.
Embodiment 4
A kind of concrete box beam flange plate cutting disassembling method according to the present invention is consolidated, is cut using cutting disassembling stabilising arrangement
The construction technology of cutting mill cutting, flange plate allocation and transportation.
This method, comprising the following steps:
S1. it removes block to divide: using direction across bridge piecemeal, vertical principle of the bridge to segmentation, drawing cutting horizontal line in box beam and cutting is vertical
Line；
S2. it drills: boring chassis tie rod hole, flange plate lifting eye and cutting disassembling stabilising arrangement anchor hole according to position of centre of gravity；
S3. assembled cutting disassembling stabilising arrangement: first lifting chassis, will be opened up on tie rod hole and box beam that chassis lower end is opened up
Anchor hole contraposition after, penetrate pull rod from the bottom up, and with the first anchor bolt make-up；Then installation is welded in the upper end of chassis
Cantilever truss beam, finally installs suspension system；
S4. cutting machine is cut: after cutting disassembling stabilising arrangement installs, suitably pre-tightening pull rod, while in flange plate lifting eye
Wirerope is penetrated, then cuts flange plate using cutting machine, when cutting operation, first cuts direction across bridge cutting seam, it is rear to cut vertical bridge
It is stitched to cutting；
S5. flange plate is allocated and transported: after flange plate cuts off cabinet, crane is in place, and hoisting wirerope slowly tightens wirerope, makes sunpender
Second anchor bolt of upper end is detached from, and sunpender does not stress at this time, and flange plate load is all carried by crane, is then released under sunpender
The third anchor bolt at end, crane decentralization flange plate carry out abolishing cleaning to designated place；
S6. cutting disassembling stabilising arrangement sliding: after the completion of flange plate is removed, the first anchor bolt of chassis bottom is released, is passed through
The cutting disassembling stabilising arrangement is moved to next dismounting segment along sliding rail by shift unit.
Embodiment 5
On the basis of the above embodiments, further, the principle of the direction across bridge piecemeal refers to according to 1 chamber number of box beam to case
Beam transverse direction piecemeal, each chamber are one piece, and cutting horizontal line is drawn between concrete guardrail and flange plate and box beam；Vertical bridge to point
The principle of section refers to according to live loop wheel machine crane capacity, across footpath and pier position deployment scenarios, determines longitudinal cut along the longitudinal direction of bridge
Secant.
The present invention can reduce the requirement to hanging device crane capacity using longitudinal divisions and lateral piecemeal, reduce big section
The difficulty of section transport, is more suitable for that spanning construction space is narrow, the concrete box beam flange plate of job location ambient enviroment complexity
It removes.The method applied in the present invention, work progress is pollution-free, and machinery equipment noise is small, influences on surrounding enviroment small.
Claims (10)
1. stabilising arrangement is cut and disassembled in a kind of concrete box beam flange plate, which is set on box beam (1),
It is characterized by comprising chassis (3), cantilever truss beam (4) and suspension system, pass through bottom in the middle part of the cantilever truss beam (4)
Frame (3) is connect with box beam (1), and the two sides of the cantilever truss beam (4) are connect by suspension system with flange plate (2)；The bottom
Sliding system is provided between frame (3) and box beam (1).
2. stabilising arrangement is cut and disassembled in a kind of concrete box beam flange plate according to claim 1, it is characterised in that: described
Sliding system includes shift unit (10) and sliding rail (11), and the sliding rail (11) is set to box beam along bridge longitudinal direction
(1) top, shift unit (10) are fixed on chassis (3), and can be slided along sliding rail (11).
3. stabilising arrangement is cut and disassembled in a kind of concrete box beam flange plate according to claim 1, it is characterised in that: described
The top of chassis (3) is connect with cantilever truss beam (4), and the bottom both ends of chassis (3) pass through pull rod (9) and box beam (1) even respectively
It connects, and is fastened by the first anchor bolt (6).
4. stabilising arrangement is cut and disassembled in a kind of concrete box beam flange plate according to claim 1, it is characterised in that: described
Chassis (3) includes top boom (3.1) and the lower boom (3.2) being arranged in parallel in below the top boom (3.1), the top boom
(3.1) it is vertically installed between lower boom (3.2) multiple vertical bars (3.3), multiple vertical bars (3.3) are spaced apart and adjacent vertical bar
(3.3) it is connected between by brace (3.4), the inclined direction of adjacent brace (3.4) is opposite.
5. stabilising arrangement is cut and disassembled in a kind of concrete box beam flange plate according to claim 4, it is characterised in that: described
It is connect between top boom (3.1) and cantilever truss beam (4) by double branch I-steel；The vertical bar (3.3) respectively with top boom
(3.1), pass through double branch I-steel connections between lower boom (3.2)；The shift unit (10) is set under lower boom (3.2)
Side.
6. stabilising arrangement is cut and disassembled in a kind of concrete box beam flange plate according to claim 4, it is characterised in that: described
Connecting rod (12) are welded between the vertical bar (3.3) and cantilever truss beam (4) of chassis (3) both ends end.
7. stabilising arrangement is cut and disassembled in a kind of concrete box beam flange plate according to claim 1, it is characterised in that: described
Suspension system includes 4 sunpenders (5), and 4 sunpenders (5) are symmetrically arranged in the two sides of cantilever truss beam (4), and the sunpender
(5) upper end is fixed on cantilever truss beam (4) by the second anchor bolt (7), and the lower end of sunpender (5) anchors spiral shell by third
Bolt (8) is connect with flange plate (2).
8. a kind of concrete box beam flange plate cutting disassembling method, it is characterised in that: this method is using cutting disassembling stabilising arrangement
Firm, cutting machine cutting, flange plate allocation and transportation construction technology.
9. a kind of concrete box beam flange plate cutting disassembling method, it is characterised in that: include the following steps,
S1. it removes block to divide: using direction across bridge piecemeal, vertical principle of the bridge to segmentation, drawing cutting horizontal line in box beam (1) and cut
Cut ordinate；
S2. it drills: boring chassis (3) tie rod hole, flange plate (2) lifting eye and cutting disassembling stabilising arrangement anchor according to position of centre of gravity
Solid hole；
S3. assembled that stabilising arrangement is cut and disassembled: first to lift chassis (3), the tie rod hole that chassis (3) lower end is opened up and box beam
(1) it after the anchor hole contraposition opened up on, penetrates from the bottom up pull rod (9), and tightened with the first anchor bolt (6)；Then exist
Upper end welding installation cantilever truss beam (4) of chassis (3), finally installs suspension system；
S4. cutting machine is cut: after cutting disassembling stabilising arrangement installs, suitably preload pull rod (9), while being risen in flange plate (2)
Penetrate wirerope in lifting hole(eyelet), then cut flange plate using cutting machine, when cutting operation, first cut direction across bridge cutting seam, after cut
Vertical bridge is cut to stitch to cutting；
S5. flange plate is allocated and transported: after flange plate (2) cuts off cabinet, crane is in place, and hoisting wirerope slowly tightens wirerope, makes to hang
Second anchor bolt (7) of bar (5) upper end is detached from, and sunpender (5) does not stress at this time, and flange plate (2) load is all carried by crane,
Then the third anchor bolt (8) of sunpender (5) lower end is released, crane decentralization flange plate (2) carries out abolishing cleaning to designated place；
S6. cutting disassembling stabilising arrangement sliding: after the completion of flange plate is removed, first anchor bolt of chassis (3) bottom is released
(6), the cutting disassembling stabilising arrangement is moved to along sliding rail (11) by next dismounting segment by shift unit (10).
10. a kind of concrete box beam flange plate cutting disassembling method according to claim 9, it is characterised in that: the step
The principle of direction across bridge piecemeal refers to that according to box beam (1) chamber number, to box beam transverse direction piecemeal, each chamber is one piece, and mixed in rapid S1
Cutting horizontal line is drawn between solidifying soil guardrail and flange plate and box beam (1)；Vertical bridge refers to the principle of segmentation lifts by crane energy according to live loop wheel machine
Power, across footpath and pier position deployment scenarios, determine longitudinally cutting line along the longitudinal direction of bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910525675.0A CN110172929A (en) | 2019-06-18 | 2019-06-18 | A kind of concrete box beam flange plate cutting disassembling stabilising arrangement and cutting disassembling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910525675.0A CN110172929A (en) | 2019-06-18 | 2019-06-18 | A kind of concrete box beam flange plate cutting disassembling stabilising arrangement and cutting disassembling method |
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| Publication Number | Publication Date |
|---|---|
| CN110172929A true CN110172929A (en) | 2019-08-27 |
Family
ID=67697451
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910525675.0A Pending CN110172929A (en) | 2019-06-18 | 2019-06-18 | A kind of concrete box beam flange plate cutting disassembling stabilising arrangement and cutting disassembling method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110984005A (en) * | 2020-01-17 | 2020-04-10 | 广东冠粤路桥有限公司 | Construction method for dismantling and hoisting No. 0 block of bridge |
| CN110984002A (en) * | 2020-01-17 | 2020-04-10 | 广东冠粤路桥有限公司 | Bridge deck auxiliary structure and method for dismantling cantilever box girder of main bridge T-shaped structure |
| CN111560864A (en) * | 2020-01-17 | 2020-08-21 | 广东冠粤路桥有限公司 | Method for dismantling old bridge |
| CN114214976A (en) * | 2022-01-27 | 2022-03-22 | 中铁二十二局集团第三工程有限公司 | Concrete bridge flange dismantling construction method and cantilever device |
-
2019
- 2019-06-18 CN CN201910525675.0A patent/CN110172929A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110984005A (en) * | 2020-01-17 | 2020-04-10 | 广东冠粤路桥有限公司 | Construction method for dismantling and hoisting No. 0 block of bridge |
| CN110984002A (en) * | 2020-01-17 | 2020-04-10 | 广东冠粤路桥有限公司 | Bridge deck auxiliary structure and method for dismantling cantilever box girder of main bridge T-shaped structure |
| CN111560864A (en) * | 2020-01-17 | 2020-08-21 | 广东冠粤路桥有限公司 | Method for dismantling old bridge |
| CN110984005B (en) * | 2020-01-17 | 2021-11-09 | 广东冠粤路桥有限公司 | Construction method for dismantling and hoisting No. 0 block of bridge |
| CN114214976A (en) * | 2022-01-27 | 2022-03-22 | 中铁二十二局集团第三工程有限公司 | Concrete bridge flange dismantling construction method and cantilever device |
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