CN110273385A - A kind of across concrete box girder method for dismounting in cross-line hole - Google Patents
A kind of across concrete box girder method for dismounting in cross-line hole Download PDFInfo
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- CN110273385A CN110273385A CN201910267686.3A CN201910267686A CN110273385A CN 110273385 A CN110273385 A CN 110273385A CN 201910267686 A CN201910267686 A CN 201910267686A CN 110273385 A CN110273385 A CN 110273385A
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- cross
- line
- box beam
- dismounting
- bridge
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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
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of across concrete box girder method for dismounting in cross-line hole, comprising the following steps: sets up protecting canopy frame below cross-line box beam；Remove bridge floor affiliated facility；By the flange plate of cross-line box beam from being respectively cut in bridge span, removing to both ends；By the top plate and bottom plate of cross-line box beam from being respectively cut in bridge span, removing to both ends；Button anchor cable system for carrying cross-line box beam is set；By the web of cross-line box beam from being respectively cut in bridge span, removing to both ends；The button anchor cable system is removed, across the concrete box girder dismounting in cross-line hole is completed, is related to technical field of bridge construction.The present invention substantially reduces difficulty of the cross-line hole across concrete box girder Demolition Construction, improves safety and construction efficiency in work progress, and the influence to existing line normal pass under bridge is smaller, practical.
Description
Technical field
The present invention relates to technical field of bridge construction, are specifically related to a kind of across concrete box girder method for dismounting in cross-line hole.
Background technique
As what urban transportation amount and traffic axis carried sharply increases, the capacity and level-of-service of bridge is required continuous
It improving, most of early concrete box-type bridge has been difficult to meet the driving demand under current heavy traffic, high load, and with
The appearance of concrete box-beam bridge itself panel construction defect and engineering disease, more influence existed concrete bridge box-type bridge knot
Structure safety and normal pass, therefore comprehensively consider and need to remove such box-type bridge, bridging toughening is mainly organic at present
Tool crush method, loop wheel machine hanging shift method etc..
And there is many cross-line bridges in city comprising across the cross-line box beam (1) of highway or railway, and be located at
The non-cross-line box beam (2) of cross-line box beam (1) two sides, for this bridge, using above two method remove there is
The disadvantages of construction effect is low, at high cost and constructional difficulties, while there is also very big security risks.Therefore, it studies and proposes
It is a kind of to be of great significance for cross-line hole across the demolition technique method of concrete box girder.
Summary of the invention
The purpose of the invention is to overcome the shortcomings of above-mentioned background technique, a kind of high-efficient, safety easy for construction is provided
Good across the concrete box girder method for dismounting in cross-line hole of property.
The present invention provides a kind of across concrete box girder method for dismounting in cross-line hole, comprising the following steps:
S1, protecting canopy frame is set up below cross-line box beam；
S2, bridge floor affiliated facility is removed；
S3, by the flange plate of cross-line box beam from being respectively cut in bridge span, removing to both ends；
S4, by the top plate and bottom plate of cross-line box beam from being respectively cut in bridge span, removing to both ends；
S5, button anchor cable system for carrying cross-line box beam is set；
S6, by the web of cross-line box beam from being respectively cut in bridge span, removing to both ends；
S7, the button anchor cable system is removed, completes across the concrete box girder dismounting in cross-line hole.
Based on the above technical solution, in step sl, the protecting canopy frame uses strip footing frame.
Based on the above technical solution, in step s 2, the affiliated facility include street lamp on bridge floor, monitoring,
Anti- throwing net and bridge surface waterproof layer, protective layer.
Based on the above technical solution, in step s3, the flange plate cuts to piecemeal along vertical bridge, removes.
Based on the above technical solution, in step s 4, the top plate and bottom plate is cut to piecemeal along vertical bridge, is removed,
Concrete stick is reserved between adjacent two pieces.
Based on the above technical solution, in step s 5, the button anchor cable system includes being set to non-cross-line box beam
On column and one end be anchored at the top of the column, the other end is anchored in the button anchor cable of the cross-line box beam.
Based on the above technical solution, the button anchor cable system further includes that one end is anchored at the top of the column, separately
One end is anchored in the anchor cable of the non-cross-line box beam.
Based on the above technical solution, the button anchorage cable anchoring is on the web of the cross-line box beam.
Based on the above technical solution, the button anchor cable includes proximal end of the anchor point close to cross-line box beam end
The distal end rope of rope and anchor point far from cross-line box beam end.
Compared with prior art, advantages of the present invention is as follows:
Across the box beam method for dismounting in cross-line hole of the invention is dividing cross-line box beam flange plate concret block, concrete roof
It after block, underplate concrete block, successively cuts, remove cross-line box beam flange plate concret block, concrete roof block, bottom
Board concrete block forms frame structure, after ensuring that frame structure cantilever end stablizes safety by setting button anchor cable system, by bridge
It is respectively cut in girder span to both ends, removes cross-line box girder web, until the dismounting of cross-line box beam finishes, remove button anchor cable system, greatly
Difficulty of the cross-line hole across concrete box girder Demolition Construction is reduced greatly, improves safety and construction efficiency in work progress,
And the influence to existing line normal pass under bridge is smaller, it is practical.
Detailed description of the invention
Fig. 1 is across the concrete box girder cut state schematic diagram in cross-line hole of the embodiment of the present invention；
Fig. 2 is across the concrete box girder cross-section diagram in cross-line hole of the embodiment of the present invention；
Fig. 3 is across the concrete box girder button anchor cable system scheme of installation in cross-line hole of the embodiment of the present invention；
Fig. 4 is the structural schematic diagram after across the concrete box girder distal end rope in cross-line hole of the embodiment of the present invention is removed.
Appended drawing reference: 1-cross-line box beam, 2-non-cross-line box beams, 3-flange plates, 4-top plates, 5-bottom plates, 6-button anchors
Cable system, 61-columns, 62-button anchor cables, 621-proximal end ropes, 622-distal end ropes, 63-anchor cables, 7-webs, 8-concrete
Stick.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the present invention is described in further detail.
Referring to FIG. 1 to FIG. 4, the embodiment of the present invention provides a kind of across concrete box girder method for dismounting in cross-line hole, including
Following steps:
S1, protecting canopy frame is set up below cross-line box beam 1；
The operational safety of bridge lower section existing line, sets up below cross-line box beam 1 when in order to ensure removing cross-line box beam 1
Protecting canopy frame, protecting canopy frame uses strip footing frame in the present embodiment, and along existing line direction, every 3m lays 500 × 8mm of φ
Steel pipe post, frame crossbeam use I20 fashioned iron, protecting canopy frame set up range along direction across bridge stretch out the outer 5m model of bridge flange plate 3
It encloses.
S2, bridge floor affiliated facility is removed；
The affiliated facility includes street lamp on bridge floor, monitoring, anti-throwing net and bridge surface waterproof layer, protective layer, work progress
After the facilities such as street lamp, monitoring, anti-throwing net on middle dismounting bridge floor, bridge surface waterproof layer and protective layer are removed using milling machine milling,
Reduce concrete box girder weight to be torn open.
S3, by the flange plate 3 of cross-line box beam 1 from being respectively cut in bridge span, removing to both ends；
As shown in Figure 1, in work progress using rope saw by the flange plate 3 of cross-line box beam 1 along vertical bridge to, from bridge span to
Piecemeal cutting in both ends is removed, in the present embodiment, from start in bridge span by flange plate 3 along vertical bridge to cut every 1.5m piecemeal,
It removes, lifting.
S4, by the top plate 4 of cross-line box beam 1, bottom plate 5 from being respectively cut in bridge span, removing to both ends；
It is sawed the top plate 4 of cross-line box beam 1, bottom plate 5 along vertical bridge using rope to from dividing in bridge span to both ends in work progress
Block cutting is removed, in the present embodiment, from start in bridge span by top plate 3, bottom plate 4 along vertical bridge to every the cutting of 2m piecemeal, tear open
It removes, lift, and be reserved with the concrete stick 8 of 50cm width between adjacent two pieces of top plates 3, between adjacent two pieces of bottom plates 4；?
When close to 1 end of cross-line box beam, top plate 3, bottom plate 4 block can suitably increase, to improve cutting, remove efficiency.
S5, button anchor cable system 6 for carrying cross-line box beam 1 is set；
As shown in figure 3, the button anchor cable system 6 includes the column 61 being set in non-cross-line box beam 2, one end is anchored in institute
61 top of column is stated, the other end is anchored in the button anchor cable 62 of the cross-line box beam 1 and one end is anchored in the column 61 and pushes up
Portion, the other end are anchored in the anchor cable 63 of the non-cross-line box beam 2；Column 61, button anchor cable 62 and anchor cable 63 collectively constitute carrying across
The load-carrying construction of 1 cantilever part of line box beam detains the abdomen that anchor cable 62 is anchored in the cross-line box beam 1 using fixing end anchorage form
On plate 7.
It is described button anchor cable 62 include anchor point close to 1 end of cross-line box beam proximal end rope 621 and anchor point far from institute
State the distal end rope 622 of 1 end of cross-line box beam；In the present embodiment, the proximal end rope 621 in anchor cable 62 is detained, distal end rope 622 anchors respectively
At away from the 1 end position 6m, 12m of cross-line box beam, rear end anchor cable 63 is anchored in the side web of non-cross-line box beam 2, and column 61, which divides, is
Two groups, every group of 2 φ 500 × 6mm specification steel pipes using 8m high, it is two groups that button anchor cable 62, which is divided to, and every group is set as 8 diameters
The steel strand wires of 15.24mm, intensity 1860M Pa, it is 2 groups that anchor cable 63, which divides, and every group is set as 10 diameter 15.24mm, intensity
The steel strand wires of 1860MPa.
S6, by the web 7 of cross-line box beam 1 from being respectively cut in bridge span, removing to both ends；
State as shown in Figure 3, in work progress using rope saw by the web 7 of cross-line box beam 1 from bridge span to both ends edge
Vertical bridge when removing to 622 neighbouring position of distal end rope, discharges 622 anchored end of distal end rope to every the cutting of 2m piecemeal, dismounting
Pulling force then removes distal end rope 622, until state shown in Fig. 4；The web 7 of remaining cross-line box beam 1 equally from bridge span to both ends
Along bridge is indulged to every the cutting of 2m piecemeal, dismounting, when removing to 621 neighbouring position of proximal end rope, 1 cantilever end of cross-line box beam is answered
Power meets concrete box girder allowable stress, therefore, can remove proximal end rope 621, then removes the web 7 of remaining cross-line box beam 1.
S7, the button anchor cable system 6 is removed, completes across the concrete box girder dismounting in cross-line hole.
After removing proximal end rope 621,6 overall pulling down of anchor cable system can will be detained, and until the whole cross-line box beams 1 of dismounting, are completed
Dismounting of the cross-line hole across concrete box girder.
Across the box beam method for dismounting in cross-line hole of the invention is mixed in division 1 flange plate of cross-line box beam, 3 concret block, top plate 4
After solidifying soil block body, 5 concret block of bottom plate, successively cuts, removes 1 flange plate of cross-line box beam, 3 concret block, 4 coagulation of top plate
Soil block body, 5 concret block of bottom plate form frame structure, ensure that frame structure cantilever end is stablized by setting button anchor cable system 6
After safety, from being respectively cut, removing 1 web 7 of cross-line box beam in bridge span to both ends, until the dismounting of cross-line box beam 1 finishes, remove
Anchor cable system 6 is detained, difficulty of the cross-line hole across concrete box girder Demolition Construction is substantially reduced, improves the safety in work progress
Property and construction efficiency, and the influence to existing line normal pass under bridge is smaller, it is practical.
Those skilled in the art can carry out various modifications to the embodiment of the present invention and modification, if these modifications and change
For type within the scope of the claims in the present invention and its equivalent technologies, then these modifications and variations are also in protection scope of the present invention
Within.
The prior art that the content being not described in detail in specification is known to the skilled person.
Claims (9)
1. a kind of across concrete box girder method for dismounting in cross-line hole, which comprises the following steps:
S1, protecting canopy frame is set up below cross-line box beam (1)；
S2, bridge floor affiliated facility is removed；
S3, by the flange plate (3) of cross-line box beam (1) from being respectively cut in bridge span, removing to both ends；
S4, by the top plate (4) of cross-line box beam (1), bottom plate (5) from being respectively cut in bridge span, removing to both ends；
S5, button anchor cable system (6) for carrying cross-line box beam (1) is set；
S6, by the web (7) of cross-line box beam (1) from being respectively cut in bridge span, removing to both ends；
S7, the button anchor cable system (6) is removed, completes across the concrete box girder dismounting in cross-line hole.
2. across the concrete box girder method for dismounting in cross-line hole as described in claim 1, it is characterised in that: in step sl, described
Protecting canopy frame uses strip footing frame.
3. across the concrete box girder method for dismounting in cross-line hole as described in claim 1, it is characterised in that: in step s 2, described
Affiliated facility includes street lamp on bridge floor, monitoring, anti-throwing net and bridge surface waterproof layer, protective layer.
4. across the concrete box girder method for dismounting in cross-line hole as described in claim 1, it is characterised in that: in step s3, described
Flange plate (3) cuts to piecemeal along vertical bridge, removes.
5. across the concrete box girder method for dismounting in cross-line hole as described in claim 1, it is characterised in that: in step s 4, described
Top plate (4), bottom plate (5) cut to piecemeal along vertical bridge, remove, and reserve concrete stick (8) between adjacent two pieces.
6. across the concrete box girder method for dismounting in cross-line hole as described in claim 1, it is characterised in that: in step s 5, described
Button anchor cable system (6) includes that the column (61) being set on non-cross-line box beam (2) and one end are anchored in the column (61) top
Portion, the other end are anchored in the button anchor cable (62) of the cross-line box beam (1).
7. across the concrete box girder method for dismounting in cross-line hole as claimed in claim 6, it is characterised in that: the button anchor cable system
It (6) further include that one end is anchored at the top of the column (61), the other end is anchored in the anchor cable (63) of the non-cross-line box beam (2).
8. across the concrete box girder method for dismounting in cross-line hole as claimed in claim 6, it is characterised in that: button anchor cable (62) anchor
It is fixed on the web (7) of the cross-line box beam (1).
9. across the concrete box girder method for dismounting in cross-line hole as claimed in claim 6, it is characterised in that: button anchor cable (62) packet
Anchor point is included close to the proximal end rope (621) and anchor point of cross-line box beam (1) end far from cross-line box beam (1) end
Distal end rope (622).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910267686.3A CN110273385B (en) | 2019-04-03 | 2019-04-03 | Method for dismantling cross-line hole cross-concrete box girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910267686.3A CN110273385B (en) | 2019-04-03 | 2019-04-03 | Method for dismantling cross-line hole cross-concrete box girder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110273385A true CN110273385A (en) | 2019-09-24 |
| CN110273385B CN110273385B (en) | 2021-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910267686.3A Active CN110273385B (en) | 2019-04-03 | 2019-04-03 | Method for dismantling cross-line hole cross-concrete box girder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111172902A (en) * | 2020-01-09 | 2020-05-19 | 南京林业大学 | Construction method for quickly dismantling box girder bridge without support |
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| JP3861100B1 (en) * | 2005-10-19 | 2006-12-20 | 有限会社 松岡知的所有権事務所 | Bridge girder dismantling method |
| CN103938557A (en) * | 2014-03-11 | 2014-07-23 | 卢耒运 | Overpass bridge dismounting method |
| CN104480868A (en) * | 2014-12-13 | 2015-04-01 | 中铁十九局集团第二工程有限公司 | Beam detaching method for road bridge overpassing operation railway |
| CN106284109A (en) * | 2016-08-17 | 2017-01-04 | 中铁二十局集团第三工程有限公司 | On across the most wired bridge main beam method for dismounting |
| JP2017122356A (en) * | 2016-01-08 | 2017-07-13 | Ｊｆｅスチール株式会社 | Replacement steel plate deck of concrete slab and replacement method of concrete slab |
| CN107165062A (en) * | 2017-07-07 | 2017-09-15 | 中铁七局集团第工程有限公司 | A kind of method for removing Existing Railway Line gate-type pier capping beam protecting canopy frame |
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2019
- 2019-04-03 CN CN201910267686.3A patent/CN110273385B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3861100B1 (en) * | 2005-10-19 | 2006-12-20 | 有限会社 松岡知的所有権事務所 | Bridge girder dismantling method |
| CN103938557A (en) * | 2014-03-11 | 2014-07-23 | 卢耒运 | Overpass bridge dismounting method |
| CN104480868A (en) * | 2014-12-13 | 2015-04-01 | 中铁十九局集团第二工程有限公司 | Beam detaching method for road bridge overpassing operation railway |
| JP2017122356A (en) * | 2016-01-08 | 2017-07-13 | Ｊｆｅスチール株式会社 | Replacement steel plate deck of concrete slab and replacement method of concrete slab |
| CN106284109A (en) * | 2016-08-17 | 2017-01-04 | 中铁二十局集团第三工程有限公司 | On across the most wired bridge main beam method for dismounting |
| CN107165062A (en) * | 2017-07-07 | 2017-09-15 | 中铁七局集团第工程有限公司 | A kind of method for removing Existing Railway Line gate-type pier capping beam protecting canopy frame |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111172902A (en) * | 2020-01-09 | 2020-05-19 | 南京林业大学 | Construction method for quickly dismantling box girder bridge without support |
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| CN110273385B (en) | 2021-03-02 |
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