CN110528391A - A kind of combined box beam high-low technique installation method - Google Patents
A kind of combined box beam high-low technique installation method Download PDFInfo
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- CN110528391A CN110528391A CN201910791070.6A CN201910791070A CN110528391A CN 110528391 A CN110528391 A CN 110528391A CN 201910791070 A CN201910791070 A CN 201910791070A CN 110528391 A CN110528391 A CN 110528391A
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- box beam
- bent cap
- pontic
- installation method
- box
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Classifications
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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
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of combined box beam high-low technique installation methods, it is related to box girder construction method and technology field, aim to solve the problem that the mode from pontic two sides feeding beam will force Beam-transporting Vehicle and relevant device to need to wait on builder's road for a long time, the technical issues of influencing the normal use of builder's road, its key points of the technical solution are that box beam is promoted to above pontic from immediately below pontic, it removes with the rear end and front end of successively completing box beam by manipulating the sling height difference of two hoist engines and bent cap and surmounts bent cap, this process is not necessarily to occupy the builder's road of pontic two sides, solves the problems, such as the occupancy builder's road long period caused by traditional feeding beam from the progress of pontic two sides, influence to builder's road is smaller.
Description
Technical field
The present invention relates to box girder construction method and technology fields, more specifically, it relates to which a kind of combined box beam high-low technique is pacified
Dress method.
Background technique
Combined box beam is one kind of precast beam in science of bridge building, and inside is hollow shape, and there are the edge of a wing in top two sides, similar case
Son, thus gain the name.
For pile equipment mode in the prior art referring to shown in Fig. 8, feeding beam mode is that box beam 11 is first passed through beam car
Box beam 11 is first carried out the promotion of vertical direction thereafter through equipment on the builder's road of 1 two sides of pontic by transport, then is carried out
Box beam 11 is placed in 13 top of bent cap of pier stud 12 to be installed, finally to realize several box beams 11 by the translation of horizontal direction
Installation.
But this mode from 1 two sides feeding beam of pontic, which will force Beam-transporting Vehicle and relevant device that long-time is needed to be in, to be applied
It is waited on work sidewalk, influences the normal use of builder's road, thus it is to be improved.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of combined box beam high-low technique installation side
Method occupies the advantage of pontic two sides builder's road without long-time when with feeding beam.
To achieve the above object, the present invention provides the following technical scheme that
A kind of combined box beam high-low technique installation method, comprising the following steps:
S1: fortune beam, by vehicle by box girder transport to feeding beam position；
S2: feeding beam specifically includes following four step:
S21: beam is risen, the both ends of box beam are lifted respectively by two hoisting windings on the Bridge Erector above pontic, by box beam
Vehicle is hung, and is promoted to below the bent cap at the top of the pier stud of pontic position to be installed；
S22: hanging beam, the hoist engine positioned at front end no longer promote box beam, and the hoist engine positioned at rear end continues to lift up the rear end of box beam,
Until the rear end of box beam is higher than corresponding bent cap and mounted box beam；
S23: moving beam, and two hoist engines, which synchronize, to be moved backward, and hereafter the hoist engine positioned at rear end no longer promotes box beam, positioned at front end
Hoist engine continues to lift up the front end of box beam, until the front end of box beam is higher than corresponding bent cap, hereafter continues to lift up and makes box beam
Front and rear end be in horizontality, hereafter two hoist engines synchronization moves in the horizontal direction, box beam is delivered to be installed
The top of position；
S24: falling beam, and the synchronous decentralization box beam of two hoist engines respectively falls at the both ends of box beam above corresponding bent cap, loose hook simultaneously solves
Hoisting rig is opened, the installation of box beam can be completed.
By using above-mentioned technical proposal, box beam can be promoted to above pontic by this case from immediately below pontic, pass through manipulation
The sling height difference of two hoist engines is removed with the rear end for successively completing box beam and front end and bent cap and is surmounted bent cap, this process is not necessarily to
Occupy pontic two sides builder's road, solve it is traditional from pontic two sides carry out feeding beam caused by occupancy builder's road it is longer when
Between the problem of, the influence to builder's road is smaller.
There are also a kind of feeding beam modes in the prior art are as follows: after persistently being carried out above mounted pontic by transport channel
Portion's feeding beam.But it must depend on transport channel, and must just can be carried out subsequent feed after pier and box beam are successively installed
Beam and installation, this kind of feeding beam mode is not flexible, Coping Construction rhythm easily occurs and can not ensure (can only continuously installing therefore needing
To) the case where, compared to this kind more flexible convenience of feeding beam mode of this case can be spaced installation.
Further, in the step S1, it is laid with steel plate in the lower section of pontic position to be installed, for being loaded with the vehicle of box beam
It stops.
By using above-mentioned technical proposal, the vehicle weight for being loaded with box beam is larger, and ground is difficult to bear each under common bridge
The pressure of tire bottom end will be loaded in the vehicle driving to steel plate of box beam by being laid with steel plate, each wheel can be born by steel plate
The pressure of tire bottom end, then increased and the contact area on ground, so that pressure suffered by ground is smaller, i.e. road pavement by steel plate
It damages smaller.
Further, in the step S21, start two hoist engines when, gradually tighten wirerope so that two hoist engines by
Power is uniform.
By using above-mentioned technical proposal, it may make the synchronous stress of two hoist engines, avoid single hoist engine under original state
The case where individually bearing the gravity of box beam leads to hoist engine overload damage, and may make that box beam is more stable in hoisting process, it mentions
The working security of step S21 is risen.
Further, in the step S1, the position of box beam is adjusted by vehicle, so that corresponding lid is protruded into the front end of box beam
At beam upright projection position.
By using above-mentioned technical proposal, first the front end of box beam is protruded at corresponding bent cap upright projection position, may make
It is subsequent that directly the rear end of box beam can be driven to rise by the hoist engine of rear end, that is, it may make the rear end of box beam in uphill process not
It collides with corresponding bent cap, without adjusting the position of box beam repeatedly by two hoist engines again during lifting box beam, is promoted
The construction convenience of step S22.
Further, in the step S21, box beam is promoted to the bottom of top and corresponding bent cap at a distance of 0.5m.
By using above-mentioned technical proposal, can under the premise of not influencing the safe distance of box beam front end and corresponding bent cap,
So that the stroke when hoist engine of subsequent back end promotes box beam rear end is smaller, i.e., so that speed of application faster.
Further, the top that the back end beam bottom of box beam is higher by corresponding bent cap in the step S22 and installs case
The top 0.5m of beam.
By using above-mentioned technical proposal, space can be reserved for subsequent move backward box beam, for before subsequent box beam
End, which rises, carries out place mat, so that the front end of box beam can keep biggish safe distance with corresponding bent cap.
Further, in the step S22, the level inclination for controlling box beam is between 8 ° to 15 °.
It by using above-mentioned technical proposal, may make the inclination angle of box beam smaller, that is, the steel cable of two hoist engines may make to be not easy
The offset of larger position occurs, so that hoist engine is more stable to the manipulation of box beam in work progress.
Further, in the step S22 and step S23, the minimum spacing of control cabinet beam end and corresponding lid beam sides
Greater than 0.2m.
By using above-mentioned technical proposal, the both ends of control box beam and the minimum range of corresponding bent cap are equal in hoisting process
Greater than 0.2m, so that being improved even if Liquid sloshing occurs in box beam will not also bump against with corresponding bent cap when strong wind
The construction safety coefficient of step S22 and step S23.
Further, in the step S24, the first erection support at the top of bent cap, then box beam is placed in above support.
By using above-mentioned technical proposal, the various loads of box beam may make to be transmitted on pier stud by support, and can
The displacement that the factors such as mobile load, temperature change and concrete shrinkage generate is adapted to, so that box beam and the actual loading situation of pier stud symbol
Close design value.
Further, it in the step S24, is first installed in bent cap top surface erection support pinner, then at the top of bearing pad stone
Support.
By using above-mentioned technical proposal, with the extension of active time, the case where support will appear aging, various aspects function
It can deteriorate, need to carry out replacing time at this time.The setting of bearing pad stone reserves centainly when can be subsequent replacing time to jack
Subsequent carry out bearing replacement is convenient in gap.
In conclusion the invention has the following advantages:
1, following steps: S1 are used: fortune beam, by vehicle by box girder transport to feeding beam position；S2: feeding beam, specifically include with
Lower four steps: S21: rising beam, lift the both ends of box beam respectively by two hoisting windings on the Bridge Erector above pontic,
Box beam is hung into vehicle, and is promoted to below the bent cap at the top of the pier stud of pontic position to be installed；S22: hanging beam, positioned at front end
Hoist engine no longer promotes box beam, and the hoist engine positioned at rear end continues to lift up the rear end of box beam, until the rear end of box beam is higher than accordingly
Bent cap；S23: moving beam, and two hoist engines, which synchronize, to be moved backward, and hereafter the hoist engine positioned at rear end no longer promotes box beam, before being located at
The hoist engine at end continues to lift up the front end of box beam, until the front end of box beam is higher than corresponding bent cap, hereafter continues to lift up and makes
The front and rear end of box beam is in horizontality, hereafter two hoist engines synchronization moves in the horizontal direction, by box beam be delivered to
The top of installation site；S24: falling beam, and the synchronous decentralization box beam of two hoist engines respectively falls at the both ends of box beam on corresponding bent cap
Side, loose hook simultaneously unlock hoisting rig, the installation of box beam can be completed；Box beam can be promoted on pontic by this case from immediately below pontic
Side, the rear end and front end for successively completing box beam by manipulating the sling height difference of two hoist engines remove and bent cap and surmount lid
Beam, this process are not necessarily to occupy the builder's road of pontic two sides, solve occupancy caused by traditional feeding beam from the progress of pontic two sides
The problem of builder's road long period, the influence to builder's road are smaller；
2, it uses in step S22 and step S23, the minimum spacing of control cabinet beam end and corresponding lid beam sides is greater than 0.2m；
The both ends of box beam are controlled in hoisting process and the minimum range of corresponding bent cap is all larger than 0.2m, so that even if in feelings such as strong wind
Under condition, Liquid sloshing occurs in box beam will not also bump against with corresponding bent cap, improve the construction safety system of step S22 and step S23
Number.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of step S1 state in the present embodiment；
Fig. 2 is the structural schematic diagram of step S21 state in the present embodiment；
Fig. 3 is the structural schematic diagram of step S22 state in the present embodiment；
Fig. 4 is the structural schematic diagram of step S23 state one in the present embodiment；
Fig. 5 is the structural schematic diagram of step S23 state two in the present embodiment；
Fig. 6 is the structural schematic diagram of step S24 state in the present embodiment；
Fig. 7 is enlarged drawing at the A in Fig. 6；
Fig. 8 is background technique attached drawing.
In figure: 1, pontic；11, box beam；12, pier stud；13, bent cap；2, Bridge Erector；21, hoist engine；22, wirerope；3, it props up
Seat cushion stone；31, support.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
Embodiment:
A kind of combined box beam high-low technique installation method comprising following steps:
Referring to Fig.1, S1: fortune beam is laid with steel plate in the lower section of the position to be installed of pontic 1, for stopping for the vehicle for being loaded with box beam 11
It stays.Box beam 11 is transported to feeding beam position by vehicle, and adjusts the position of box beam 11 by vehicle, so that the front end of box beam 11
It protrudes at the 1/2-5/6 of corresponding 13 upright projection position of bent cap, it is preferred that at 2/3.
Referring to Fig.1, S2: feeding beam specifically includes following four step:
Referring to Fig.1, S21: rising beam, lifts box beam 11 respectively by two hoisting windings 21 on the Bridge Erector 2 of 1 top of pontic
Both ends, start two hoist engines 21 when, gradually tighten wirerope 22 so that the uniform force of two hoist engines 21.Hereafter by box beam
11 hang vehicle, and are promoted box beam 11 being promoted to the bottom of back and corresponding bent cap 13 at a distance of 0.5m(reference Fig. 2).
Referring to Fig. 3 and Fig. 4, S22: hanging beam, the hoist engine 21 positioned at front end no longer promote box beam 11, the elevator positioned at rear end
Machine 21 continues to lift up the rear end of box beam 11, until the rear end of box beam 11 is higher than corresponding bent cap 13 and mounted box beam 11, and
So that the highest point of the beam bottom of the rear end of box beam 11 is higher by the top of corresponding bent cap 13 and the top 0.5m of mounted box beam 11.
During this, the level inclination of control box beam 11 is between 8 ° to 15 °.And control 11 end of box beam and corresponding 13 side of bent cap
Minimum spacing be greater than 0.2m.
Referring to Fig. 4 and Fig. 5, S23: moving beam, two hoist engines 21, which synchronize, to be moved backward, and is hereafter located at the hoist engine 21 of rear end not
Box beam 11 is promoted again, the front end of box beam 11 is continued to lift up positioned at the hoist engine 21 of front end, until the front end of box beam 11 is higher than accordingly
Bent cap 13, hereafter continue to lift up and the front and rear end of box beam 11 made to be in horizontality.Hereafter two hoist engines 21 are synchronous
It moves in the horizontal direction, box beam 11 is delivered to the top of position to be installed.During this, control 11 both ends of box beam and corresponding
The minimum spacing of 13 side of bent cap is all larger than 0.2m.
Referring to Fig. 6 and Fig. 7, S24: falling beam, first pacify in 13 top surface erection support pinner 3 of bent cap, then at the top of bearing pad stone 3
Fill support 31.Hereafter the synchronous decentralization box beam 11 of two hoist engines 21 is driven, the both ends of box beam 11 are fallen in respectively and simultaneously corresponding
On the support 31 of 13 top of bent cap.Position deviation is adjusted, to ensure that installation site is correct.Confirm that 31 position of support is correct, stress
The uniform and closely knit situation of contact.Last pine hook simultaneously unlocks hoisting rig, and the installation of box beam 11 can be completed.
Working principle is as follows: box beam 11 can be promoted to above pontic 1 by this case from immediately below pontic 1, by manipulating volume two
The sling height difference of machine 21 is raised successively to complete the rear end of box beam 11 and front end removal bent cap 13 and surmount bent cap 13, this process
Without occupying the builder's road of 1 two sides of pontic, solves and occupy builder's road caused by traditional feeding beam from the progress of 1 two sides of pontic
The problem of long period, the influence to builder's road are smaller.
There are also a kind of feeding beam modes in the prior art are as follows: is persistently carried out above mounted pontic 1 by transport channel
Rear portion feeding beam.But it must depend on transport channel, and must just can be carried out after pier and box beam 11 are successively installed subsequent
Feeding beam and installation, this kind of feeding beam mode is not flexible, easily occur bent cap 13 construct rhythm can not ensure (can only continuously install therefore
Need to wait for) the case where, compared to this kind more flexible convenience of feeding beam mode of this case can be spaced installation.
In addition, by the front end of box beam 11 is first protruded into corresponding 13 upright projection position of bent cap 2/3 at, may make subsequent
Directly the rear end of box beam 11 can be driven to rise by the hoist engine 21 of rear end, that is, may make the rear end of box beam 11 in uphill process
It does not collide with corresponding bent cap 13, without adjusting box beam 11 repeatedly by two hoist engines 21 again during lifting box beam 11
Position improves the construction convenience of step S22.
In addition, it is whole mobile to the back-end by two hoist engines 21 and box beam 11 in step S23, so that before box beam 11
There are enough safe distances at end with corresponding bent cap 13, hereafter can directly be driven on 11 front end of box beam by the hoist engine 21 of front end
It rises, so that the front end of box beam 11 is not collided in uphill process with corresponding bent cap 13, without during lifting box beam 11
The position for adjusting box beam 11 repeatedly by two hoist engines 21 again, improves the construction convenience of step S23.
It is all larger than 0.2m with the minimum range of corresponding bent cap 13 in addition, controlling the both ends of box beam 11 in hoisting process, with
So that improving step S22 even if Liquid sloshing occurs in box beam 11 will not also bump against with corresponding bent cap 13 when strong wind
And the construction safety coefficient of step S23.
In addition, may make the various loads of box beam 11 to be transmitted on pier stud 12 by support 31, and it can adapt to mobile load, temperature
The displacement that the factors such as degree variation and concrete shrinkage generate, so that box beam 11 and the actual loading situation of pier stud 12 meet design
Value.
In addition, with the extension of active time, the case where support 31 will appear aging, the deterioration of various aspects function needs at this time
Carry out replacing time 31.Certain interval is reserved to jack when the setting of bearing pad stone 3 can be subsequent replacing time 31.It is convenient for
Subsequent progress support 31 replacement.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (10)
1. a kind of combined box beam high-low technique installation method, which comprises the following steps:
S1: fortune beam is transported box beam (11) to feeding beam position by vehicle；
S2: feeding beam specifically includes following four step:
S21: beam is risen, lifts box beam (11) respectively by two hoisting windings (21) on the Bridge Erector (2) above pontic (1)
Both ends, box beam (11) is hung into vehicle, and be promoted under the bent cap (13) at the top of the pier stud (12) of pontic (1) position to be installed
Side；
S22: hanging beam, the hoist engine (21) positioned at front end no longer promote box beam (11), and the hoist engine (21) positioned at rear end continues to mention
The rear end of box beam (11) is risen, until the rear end of box beam (11) is higher than corresponding bent cap (13) and mounted box beam (11)；
S23: moving beam, and two hoist engines (21), which synchronize, to be moved backward, and hereafter the hoist engine (21) positioned at rear end no longer promotes box beam
(11), the front end of box beam (11) is continued to lift up positioned at the hoist engine (21) of front end, until the front end of box beam (11) is higher than accordingly
Bent cap (13) hereafter continues to lift up and the front and rear end of box beam (11) is made to be in horizontality, hereafter two hoist engines (21)
Synchronization is moved in the horizontal direction, and box beam (11) is delivered to the top of position to be installed；
S24: falling beam, and the both ends of box beam (11) are respectively fallen in corresponding bent cap by synchronous decentralization box beam (11) of two hoist engines (21)
(13) top, loose hook simultaneously unlock hoisting rig, the installation of box beam (11) can be completed.
2. a kind of combined box beam high-low technique installation method according to claim 1, it is characterised in that: in the step S1,
It is laid with steel plate in the lower section of pontic (1) position to be installed, for being loaded with the stoppage of vehicle of box beam (11).
3. a kind of combined box beam high-low technique installation method according to claim 1, it is characterised in that: in the step S21,
When starting two hoist engines (21), wirerope (22) gradually are tightened, so that the uniform force of two hoist engines (21).
4. a kind of combined box beam high-low technique installation method according to claim 1, it is characterised in that: in the step S1,
By the position of vehicle adjustment box beam (11), so that the front end of box beam (11) is protruded at corresponding bent cap (13) upright projection position.
5. a kind of combined box beam high-low technique installation method according to claim 4, it is characterised in that: in the step S21,
Box beam (11) is promoted to the bottom of back and corresponding bent cap (13) at a distance of 0.5m.
6. a kind of combined box beam high-low technique installation method according to claim 5, it is characterised in that: in the step S22,
The rear end of box beam (11) is located to the top 0.5m for being higher by corresponding bent cap (13) at beam bottom and having installed box beam (11).
7. a kind of combined box beam high-low technique installation method according to claim 6, it is characterised in that: in the step S22,
The level inclination for controlling box beam (11) is between 8 ° to 15 °.
8. a kind of combined box beam high-low technique installation method according to claim 1, it is characterised in that: the step S22 and
In step S23, the minimum spacing of control box beam (11) end and corresponding bent cap (13) side wall is greater than 0.2m.
9. a kind of combined box beam high-low technique installation method according to claim 1, it is characterised in that: in the step S24,
Support (31) first are laid at the top of bent cap (13), then box beam (11) is placed in above support (31).
10. a kind of combined box beam high-low technique installation method according to claim 9, it is characterised in that: the step S24
In, first in bent cap (13) top surface erection support pinner (3), then the erection support (31) at the top of bearing pad stone (3).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910791070.6A CN110528391A (en) | 2019-08-26 | 2019-08-26 | A kind of combined box beam high-low technique installation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910791070.6A CN110528391A (en) | 2019-08-26 | 2019-08-26 | A kind of combined box beam high-low technique installation method |
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| CN110528391A true CN110528391A (en) | 2019-12-03 |
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| CN201910791070.6A Pending CN110528391A (en) | 2019-08-26 | 2019-08-26 | A kind of combined box beam high-low technique installation method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113322830A (en) * | 2021-06-30 | 2021-08-31 | 嘉兴力达建设有限公司 | Construction method of inclined lifting beam |
| CN114717973A (en) * | 2022-03-04 | 2022-07-08 | 中建五局土木工程有限公司 | Construction method for hoisting prefabricated small box girder under bridge girder erection machine in staggered height mode |
| CN114717958A (en) * | 2022-04-09 | 2022-07-08 | 中铁上海工程局集团第五工程有限公司 | Method for installing large specially-made Bailey beam |
| CN114808708A (en) * | 2022-03-29 | 2022-07-29 | 中国铁建港航局集团有限公司 | Small box girder high-low hanging method installation construction method |
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| CN107974944A (en) * | 2017-12-06 | 2018-05-01 | 浙江中建路桥设备有限公司 | A kind of Y types road-cum-rail bridge floorings hanging apparatus and hanging method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113322830A (en) * | 2021-06-30 | 2021-08-31 | 嘉兴力达建设有限公司 | Construction method of inclined lifting beam |
| CN114717973A (en) * | 2022-03-04 | 2022-07-08 | 中建五局土木工程有限公司 | Construction method for hoisting prefabricated small box girder under bridge girder erection machine in staggered height mode |
| CN114808708A (en) * | 2022-03-29 | 2022-07-29 | 中国铁建港航局集团有限公司 | Small box girder high-low hanging method installation construction method |
| CN114808708B (en) * | 2022-03-29 | 2023-09-26 | 中国铁建港航局集团有限公司 | Small box girder high-low hanging method installation construction method |
| CN114717958A (en) * | 2022-04-09 | 2022-07-08 | 中铁上海工程局集团第五工程有限公司 | Method for installing large specially-made Bailey beam |
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Application publication date: 20191203 |
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| RJ01 | Rejection of invention patent application after publication |