CN106192761A - A kind of method disassembling mobile formwork in bridge tunnel narrow short transition time section - Google Patents
A kind of method disassembling mobile formwork in bridge tunnel narrow short transition time section Download PDFInfo
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- CN106192761A CN106192761A CN201610668987.3A CN201610668987A CN106192761A CN 106192761 A CN106192761 A CN 106192761A CN 201610668987 A CN201610668987 A CN 201610668987A CN 106192761 A CN106192761 A CN 106192761A
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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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Abstract
The invention discloses a kind of method disassembling mobile formwork in bridge tunnel narrow short transition time section, before mobile formwork assembly, girder bottom welding installs track advancing, and its position, physical dimension guide rail existing with nose girder are identical；After last a piece of beam makes, mobile formwork is moved in tunnel, progressively removes plug-in；After plug-in dismounting, exit in tunnel, more piecemeal remove mobile formwork nose girder, girder and, connect system and before, during and after supporting leg.The present invention is a kind of simple to operate, safe and reliable, method disassembling mobile formwork in bridge tunnel narrow short transition time section of low cost.
Description
Technical field
The present invention relates to a kind of method disassembling mobile formwork, particularly relate to one and disassemble shifting in bridge tunnel narrow short transition time section
The method of dynamic model frame.
Background technology
The up self-propelled moveable formwork of DSZ32/900 type designs for the construction of special line for passenger trains double-line full span box,
Mould bases uses girder to be placed in bridge floor top structure, utilizes beam-ends, bridge pier to install supporting leg, it is possible to upside-down mounting supporting leg voluntarily, has good
Stability.Mould bases is mainly by girder system, plug-in, transverse-moving mechanism and locking mechanism, outer modular system, rear running mechanism, prop up afterwards
Lower limb, middle support oil cylinder, front leg strut upper framework, suspension rod, lifting dolly, overhead traveling crane and 5t electric hoist, electric hydraulic system and auxiliary set
The part composition, wherein: girder divides 1# girder, 2# girder, 3# girder three sections, wherein: 1# girder 12.9m, 2# girder, 3# master such as execute
Beam is respectively 12.0m；Nose girder divides 1# nose girder, 2# nose girder, 3# nose girder three sections, length 11.0m respectively；Total length reaches 69.9m.Plug-in
Plug-in including 1#, 2# is plug-in, 3# is plug-in, 4# is plug-in, 5# is plug-in, 6# is plug-in, 7# is plug-in and 8# is plug-in.
Conventional mobile formwork assembling method is: the common disassembling method of mobile formwork is after beam processed, will movement
Mould bases moves to roadbed, carries out using crane to disassemble piecemeal on roadbed.
Being positioned between two tunnels for lower dam bridge, between the bridge tunnel of big mileage direction, changeover portion is less than 10m.For bridge between tunnel
The erection of beam, typically uses support cast-in-place method or treats that after beam field is prefabricated tunnel holing through uses the methods such as Bridge Erector erection to carry out
Bridge erection.Lower dam bridge pier body height is more than 50 meters, and up to 70 meters, construction site is high mountains and precipitous paths, and tunnel cannot shift to an earlier date
Through, according to owner's Design of Construction Organization requirement, lower dam bridge uses mobile formwork cast-in-place construction, complete at mobile formwork beam
After, mobile formwork to be solved is in the dismounting of bridge tunnel changeover portion less than 10 meters, disintegration problem.Bridge big mileage direction, lower dam bridge tunnel
Between changeover portion (containing abutment) less than 10m, and DSZ32-900 mobile formwork body total length reaches 69.9m, due to construction site very
Narrow, after setting a roof beam in place, disassemble mobile formwork difficulty at narrow short bridge tunnel changeover portion the biggest.
Summary of the invention
The technical problem to be solved is to provide the narrow at bridge tunnel of a kind of simple to operate, safe and reliable, low cost
Short transition time section disassembles the method for mobile formwork.
In order to solve above-mentioned technical problem, the method disassembling mobile formwork in bridge tunnel narrow short transition time section that the present invention provides,
Before mobile formwork assembly, girder bottom welding installs track advancing, and its position, physical dimension guide rail existing with nose girder are identical；
After last a piece of beam makes, mobile formwork is moved in tunnel, progressively removes plug-in；After plug-in dismounting, from
Exit in tunnel, more piecemeal remove mobile formwork nose girder, girder and, connect system and before, during and after supporting leg.
Specifically comprise the following steps that
(1), Main Girder Welding guide rail:
Before starting to set a roof beam in place, at girder corresponding to nose girder guide rail position welding same size, the guide rail of identical material, and with
Nose girder guide rail carries out weldering even, it is desirable to the spreading guide rail that girder is welded with is on the prolongation straight line of nose girder guide rail, and smooth, straight；
(2), system is set a roof beam in place complete:
After system is set a roof beam in place, mobile formwork is in following state: 2#, 3# nose girder stretches in tunnel, and middle support oil cylinder is placed in
Mobile formwork load is born at abutment top, and rear running mechanism is supported on and sets up on beam face, and front leg strut upper framework is placed in abutment top,
By driving and the tourelle of front leg strut upper framework of rear travel structure, it is achieved mobile formwork moves forward and backward relative to tunnel；
(3), mobile formwork and front leg strut upper framework are moved:
Moving forward mould bases plug-in near abutment to 8#, then fixing middle supporting leg, uses overhead traveling crane toward direction handling in tunnel
Front leg strut upper framework is to 3# nose girder medium position, and installs fixing；
(4), remove plug-in:
Utilize bridge tunnel changeover portion roadbed as job platform, install 50t crane each along line direction and changeover portion both sides
Platform, carries out removing plug-in operation: first remove 8# plug-in, then mobile formwork reach, and 7# is plug-in near abutment；Remove 7# plug-in,
Then mobile formwork reach, 6# is plug-in near abutment；Removing 6# plug-in, then mobile formwork reach, 5# is plug-in near abutment；With
This analogizes, until all of plug-in whole dismountings are complete；
(5), beam body retreats:
After plug-in whole dismounting, mobile formwork beam body divides three steps to exit tunnel, only stays 3# nose girder in bridge tunnel roadbed mistake
The section of crossing；
The first step: front leg strut upper framework remains stationary as, reverse starting rear support leg running mechanism, beam body retreats, until 3# leads
Beam front end is moved at leading supporting leg upper framework；
Second step: supporting leg in fixing, overhead traveling crane handling front leg strut upper framework is to Abutment；
3rd step: fixing front leg strut upper framework, supporting leg in contraction, reverse starting rear support leg running mechanism, beam body retreats, directly
Move at front leg strut upper framework to 3# nose girder rear end, i.e. 3# nose girder is positioned at bridge tunnel basement transition stage；
(6), nose girder is removed:
Use the 50t crane installed, after 3# nose girder is disassembled in lifting, 3# nose girder is transported outward transition, 2# nose girder by trailer
Move forward at basement transition stage；After 2# nose girder is disassembled in lifting, by trailer, 2# nose girder being transported outward transition in time, 1# nose girder moves forward to
At basement transition stage；After 1# nose girder is disassembled in lifting, in time 1# nose girder being transported outward transition, 3# girder moves forward at basement transition stage；
(7), girder and running gear are removed:
Using the 50t crane installed, after 3# girder is disassembled in lifting, transport outward transition by trailer in time, 2# girder moves forward
To basement transition stage；After 2# girder is disassembled in lifting, transporting outward transition in time by trailer in time, 1# girder remains stationary as in situ；
Bridge on crane, disassembles rear support leg and running mechanism, lifts 1# girder entrucking transition on bridge；
(8), running gear is removed:
Crane lifting rear support leg, rear running mechanism and front leg strut upper framework, cleaning lifting place, complete mobile formwork solution
Body.
Using the method disassembling mobile formwork in bridge tunnel narrow short transition time section of technique scheme, its patented technology feature is such as
Under:
1, the present invention is by being welded with track advancing on girder, by girder movement on track advancing, makes mobile mould
Frame can move in tunnel, can remove nose girder, girder piecemeal, until completing the dismounting of whole section of mobile formwork；
2, mobile formwork disassembling operation in the present invention is suitable for straight tunnel, for curved tunnel, should be determined by measurement
Whether curved section possesses the condition that mobile formwork straight line retreats；Really do not satisfy the requirements, can be by strengthening tunnel cross-section chi
Very little solution mobile formwork problem of movement in tunnel；
3, the successful Application of the present invention, successfully solves the assembled via in place of narrow bridge tunnel changeover portion mobile formwork and beam processed
After bridge tunnel changeover portion disintegrate problem, expanded the range of application of mobile formwork, for complicated topographical conditions ground iron leg
The organization arrangement that road system is set a roof beam in place provides reference, is adapted to very much the construction that works to tight deadlines that mountain area system is set a roof beam in place；
4, the present invention only relies on the movement of " track advancing " set up on mobile formwork " front leg strut upper framework " girder and i.e. solves
The problem that mobile formwork of having determined retreats traveling；Outstanding technology of tearing open is used i.e. to solve the problem that mobile formwork segmentation is removed, operation letter
Single, safe and reliable, reduce equipment investment cost, not only save cost, in terms of energy-saving and emission-reduction and environmental conservation, effect is also
Fairly obvious.
In sum, the present invention be a kind of simple to operate, safe and reliable, low cost disassemble shifting in bridge tunnel narrow short transition time section
The method of dynamic model frame.
Accompanying drawing explanation
Fig. 1 is the process chart of the present invention.
Fig. 2 is the Main Girder Welding guide rail schematic diagram of the present invention.
Fig. 3 is that the system of the present invention is set a roof beam in place complete schematic diagram.
Fig. 4 is mobile mobile formwork and the schematic diagram of front leg strut upper framework of the present invention.
Fig. 5 be the present invention start remove plug-in schematic diagram.
Fig. 6 is the schematic diagram removing plug-in midway of the present invention.
Fig. 7 is the plug-in schematic diagram completed of dismounting of the present invention.
Fig. 8 is the schematic diagram of the beam body retrogressing first step of the present invention.
Fig. 9 is the schematic diagram of the beam body retrogressing second step of the present invention.
Figure 10 is the schematic diagram of beam body retrogressing the 3rd step of the present invention.
Figure 11 is that 2# nose girder when removing nose girder of the present invention moves forward to the schematic diagram at basement transition stage.
Figure 12 is that 1# nose girder when removing nose girder of the present invention moves forward to the schematic diagram at basement transition stage.
Figure 13 is that 3# girder when removing nose girder of the present invention moves forward to the schematic diagram at basement transition stage.
Figure 14 is that 2# girder when removing girder and running gear of the present invention moves forward to the schematic diagram at basement transition stage.
Figure 15 is the schematic diagram that when removing girder and running gear, 1# girder remains stationary as in situ of the present invention.
Figure 16 is the schematic diagram lifting 1# girder entrucking transition when removing girder and running gear on bridge of the present invention.
Figure 17 is the schematic diagram removing running gear of the present invention.
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
Under the railway of cloud osmanthus, Bridge Pier abutment body average pier height in dam has exceeded 54.3m, according to Design of Construction Organization and scheme requirement, under
Dam bridge uses the cast-in-place beam processed of DSZ32-900 mobile formwork.
Between the bridge tunnel of bridge big mileage direction, lower dam, changeover portion (containing abutment) is less than 10m, and DSZ32-900 mobile formwork body
Total length reaches 69.9m, owing to construction site is the narrowest, after setting a roof beam in place, disassembles mobile mould at narrow short bridge tunnel changeover portion
Frame difficulty is the biggest.
The up self-propelled moveable formwork of DSZ32/900 type designs for the construction of special line for passenger trains double-line full span box,
Mould bases uses girder to be placed in bridge floor top structure, utilizes beam-ends, bridge pier to install supporting leg, it is possible to upside-down mounting supporting leg voluntarily, has good
Stability.Mould bases mainly by girder system, plug-in, transverse-moving mechanism and locking mechanism, outer modular system, rear running mechanism 11, after
Supporting leg 22, middle support oil cylinder 10, front leg strut upper framework 12, suspension rod, lifting dolly, overhead traveling crane 24 and 5t electric hoist, electric hydraulic system
The part composition such as system and auxiliary equipment, wherein: girder divides 1# girder 1,2# girder 2,3# girder 3 three sections, wherein: 1# girder
12.9m, 2# girder, 3# girder are respectively 12.0m；Nose girder divides 1# nose girder 6,2# nose girder 7,3# nose girder 8 three sections, and length is respectively
11.0m；Total length reaches 69.9m.Plug-in include that 1# is plug-in 21,2# is plug-in 20,3# is plug-in 19,4# is plug-in 18,5# is plug-in 17, outside 6#
Extension 16,7# plug-in 15 and 8# plug-in 14.
Lower dam bridge is positioned between two tunnels, and between the bridge tunnel of big mileage direction, changeover portion is less than 10m.For bridge between tunnel
Set up, typically use support cast-in-place method or after beam field is prefabricated, treats that tunnel holing through uses the methods such as Bridge Erector erection to carry out bridge
Set up.Lower dam bridge pier body height is more than 50 meters, and up to 70 meters, and cloud osmanthus railway is high mountains and precipitous paths, tunnel cannot pass through in advance
Logical, according to owner's Design of Construction Organization requirement, lower dam bridge uses mobile formwork cast-in-place construction, complete at mobile formwork beam
After, mobile formwork to be solved is in the dismounting of bridge tunnel changeover portion less than 10 meters, disintegration problem.
Through on-the-spot actual survey with measure, mobile formwork top width 7.6m, with the tunnel clear span of mobile formwork top corresponding height
12.106m, have more than needed 2.253m in both sides；Mobile formwork height (containing track) 4.9m, the vertical corresponding tunnel clear height of two sides
7.952m, height 3.052m more than needed；By relative analysis, in tunnel, possesses the condition accommodating mobile formwork；
Between the bridge tunnel of bridge big mileage direction, lower dam, changeover portion is plus the length of abutment, and total length is less than 10 meters, and both sides are shallow
Cutting, can suitably widen, and possesses the condition of crane operation；
According to the version of mobile formwork, and on-the-spot actual condition, it is determined that disassemble shifting in bridge tunnel narrow short transition time section
The method of dynamic model frame is: before mobile formwork assembly, and girder bottom welding installs track advancing, its position, physical dimension and nose girder
Existing guide rail is identical；After last a piece of beam makes, mobile formwork is moved in tunnel, progressively removes plug-in；Outward
Hang remove after, exit in tunnel, more piecemeal remove mobile formwork nose girder, girder and, connect system and before, during and after supporting leg.
Seeing Fig. 1, in the method that bridge tunnel narrow short transition time section disassembles mobile formwork, it specifically comprises the following steps that
1, Main Girder Welding guide rail:
See Fig. 2, before starting to set a roof beam in place, at girder corresponding to nose girder guide rail position welding same size, identical material
Track advancing 4, and carry out weldering even with nose girder guide rail 5, it is desirable to the prolongation that the spreading guide rail 4 that girder is welded with is in nose girder guide rail 5 is straight
On line and smooth, straight；
In this achievement in research, it is possible to use when assembly, the track advancing 4 of welding carries out disintegration slideway.
2, system is set a roof beam in place complete
Seeing Fig. 3, after system is set a roof beam in place, mobile formwork is in following state: 2# nose girder 7,3# nose girder 8 stretch in tunnel 9,
Middle support oil cylinder 10 is placed in abutment top and bears mobile formwork load, and rear running mechanism 11 is supported on and sets up on beam face, front
Lower limb upper framework 12 is placed in abutment 13 and pushes up, by driving and the tourelle of front leg strut upper framework 12 of rear travel structure 11, it is achieved
Mobile formwork moves forward and backward relative to tunnel 9；
3, mobile formwork and front leg strut upper framework are moved
Seeing Fig. 4, move forward mould bases to 8# plug-in 14 near abutment 13, then fixing middle support oil cylinder 10, uses sky
Car 24 is toward direction handling front leg strut upper framework 12 to 3# nose girder 8 medium position in tunnel 9, and installs fixing.
4, remove plug-in
See Fig. 5, Fig. 6 and Fig. 7, utilize bridge tunnel changeover portion roadbed as job platform, along line direction and changeover portion two
Each one of 50t crane is installed in side, carries out removing plug-in operation: first remove 8# plug-in 14, then mobile formwork reach, 7# plug-in 15
Near abutment 13；Removing 7# plug-in 15, then mobile formwork reach, 6# plug-in 16 is near abutment；Remove 6# plug-in 16, then move
Dynamic model frame moves forward, and 5# plug-in 17 is near abutment 13；By that analogy, until all of plug-in whole dismountings are complete；
5, beam body retreats
After plug-in whole dismounting, mobile formwork beam body divides three steps to exit tunnel 9, only stays 3# nose girder 8 at bridge tunnel roadbed
Changeover portion.
The first step: see Fig. 8, front leg strut upper framework 12 remains stationary as, and reverse starting rear support leg running mechanism 11, after beam body
Move back, until 3# nose girder 8 front end is moved at leading supporting leg upper framework 12；
Second step: see Fig. 9, fixing middle support oil cylinder 10, at overhead traveling crane 24 handling front leg strut upper framework 12 to abutment 13；
3rd step: see Figure 10, fixing front leg strut upper framework 12, support oil cylinder 10 in contraction, reverse starting rear support leg is walked
Row mechanism 11, beam body retreats, until 3# nose girder 8 rear end moves at front leg strut upper framework 12, i.e. 3# nose girder 8 is positioned at bridge tunnel roadbed
Changeover portion.
6, nose girder is removed
Using the 50t crane installed, after 3# nose girder 8 is disassembled in lifting, by trailer, 3# nose girder 8 is transported outward transition, 2# leads
Beam 7 moves forward at basement transition stage (such as Figure 11)；After 2# nose girder 7 is disassembled in lifting, by 2# nose girder 7 by trailer outer operating in time
, 1# nose girder 6 moves forward at basement transition stage (such as Figure 12)；After 1# nose girder 6 is disassembled in lifting, in time 1# nose girder 6 is transported outward transition,
3# girder 3 moves forward at basement transition stage (such as Figure 13)；
7, girder and running gear are removed
Use the 50t crane installed, after 3# girder 3 is disassembled in lifting, transport outward transition by trailer in time, before 2# girder 2
Move at basement transition stage (such as Figure 14)；After 2# girder is disassembled in lifting, transporting outward transition in time by trailer in time, 1# girder is in situ
Remain stationary as (such as Figure 15)；Bridge on crane, disassembles rear support leg and running mechanism, lifts 1# girder entrucking transition (such as figure on bridge
16)；
8, running gear is removed
Seeing Figure 17, crane lifting rear support leg 22, rear running mechanism 11 and front leg strut upper framework 12, cleaning lifts place,
Complete mobile formwork to disintegrate.
Claims (2)
1. the method disassembling mobile formwork in bridge tunnel narrow short transition time section, is characterized in that: before mobile formwork assembly, bottom girder
Welded and installed track advancing, its position, physical dimension guide rail existing with nose girder are identical；After last a piece of beam makes,
Mobile formwork is moved in tunnel, progressively removes plug-in；After plug-in dismounting, exit in tunnel, then remove shifting piecemeal
Dynamic model frame nose girder, girder and, connect system and before, during and after supporting leg.
The method disassembling mobile formwork in bridge tunnel narrow short transition time section the most according to claim 1, is characterized in that: concrete steps
As follows:
(1), Main Girder Welding guide rail:
Before starting to set a roof beam in place, weld same size, the guide rail of identical material, and and nose girder at girder corresponding to nose girder guide rail position
Guide rail carries out weldering even, it is desirable to the spreading guide rail that girder is welded with is on the prolongation straight line of nose girder guide rail, and smooth, straight；
(2), system is set a roof beam in place complete:
After system is set a roof beam in place, mobile formwork is in following state: 2#, 3# nose girder stretches in tunnel, and middle support oil cylinder is placed in abutment
Mobile formwork load is born at top, and rear running mechanism is supported on and sets up on beam face, and front leg strut upper framework is placed in abutment top, passes through
The driving of rear travel structure and the tourelle of front leg strut upper framework, it is achieved mobile formwork moves forward and backward relative to tunnel；
(3), mobile formwork and front leg strut upper framework are moved:
Move forward mould bases plug-in near abutment to 8#, then fixing middle supporting leg, use overhead traveling crane to prop up before direction handling in tunnel
Lower limb upper framework is to 3# nose girder medium position, and installs fixing；
(4), remove plug-in:
Utilize bridge tunnel changeover portion roadbed as job platform, install each one of 50t crane along line direction and changeover portion both sides, enter
Row removes plug-in operation: first remove 8# plug-in, then mobile formwork reach, and 7# is plug-in near abutment；Remove 7# plug-in, then move
Dynamic model frame moves forward, and 6# is plug-in near abutment；Removing 6# plug-in, then mobile formwork reach, 5# is plug-in near abutment；With this type of
Push away, until all of plug-in whole dismountings are complete；
(5), beam body retreats:
After plug-in whole dismounting, mobile formwork beam body divides three steps to exit tunnel, only stays 3# nose girder at bridge tunnel basement transition stage；
The first step: front leg strut upper framework remains stationary as, reverse starting rear support leg running mechanism, beam body retreats, until before 3# nose girder
At the mobile leading supporting leg upper framework of end；
Second step: supporting leg in fixing, overhead traveling crane handling front leg strut upper framework is to Abutment；
3rd step: fixing front leg strut upper framework, supporting leg in contraction, reverse starting rear support leg running mechanism, beam body retreats, until 3#
Nose girder rear end moves at front leg strut upper framework, i.e. 3# nose girder is positioned at bridge tunnel basement transition stage；
(6), nose girder is removed:
Using the 50t crane installed, after 3# nose girder is disassembled in lifting, by trailer, 3# nose girder is transported outward transition, 2# nose girder moves forward
To basement transition stage；After 2# nose girder is disassembled in lifting, by trailer, 2# nose girder being transported outward transition in time, 1# nose girder moves forward to roadbed
At changeover portion；After 1# nose girder is disassembled in lifting, in time 1# nose girder being transported outward transition, 3# girder moves forward at basement transition stage；
(7), girder and running gear are removed:
Using the 50t crane installed, after 3# girder is disassembled in lifting, transport outward transition by trailer in time, 2# girder moves forward to road
Ji Guoduduanchu；After 2# girder is disassembled in lifting, transporting outward transition in time by trailer in time, 1# girder remains stationary as in situ；Crane
Upper bridge, disassembles rear support leg and running mechanism, lifts 1# girder entrucking transition on bridge；
(8), running gear is removed:
Crane lifting rear support leg, rear running mechanism and front leg strut upper framework, cleaning lifting place, complete mobile formwork and disintegrate.
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| CN109505262A (en) * | 2018-12-29 | 2019-03-22 | 中铁局集团有限公司 | A kind of mobile formwork bridge fabrication machine girder turns around construction method |
| CN112482226A (en) * | 2020-11-19 | 2021-03-12 | 中铁大桥局集团有限公司 | Overhead variable-span length construction method for upstroke movable formwork |
| CN113073556A (en) * | 2021-03-19 | 2021-07-06 | 中铁大桥局集团第一工程有限公司 | Descending type beam mold combination movable mold frame and construction method thereof |
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