CN107268453B - The whole Pin double-machine lifting crane combination roller support installation engineering method of oblique parallel-chord truss - Google Patents
The whole Pin double-machine lifting crane combination roller support installation engineering method of oblique parallel-chord truss Download PDFInfo
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- CN107268453B CN107268453B CN201710709467.7A CN201710709467A CN107268453B CN 107268453 B CN107268453 B CN 107268453B CN 201710709467 A CN201710709467 A CN 201710709467A CN 107268453 B CN107268453 B CN 107268453B
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- truss
- roller support
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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 present invention relates to oblique parallel-chord truss hanging method, the specially oblique whole Pin double-machine lifting crane combination roller support installation engineering method of parallel-chord truss, the engineering method uses 4 lifting methods of size tonnage crane two-shipper by truss integral hoisting.By the reasonable distribution to equipment hoisting weight between two loop wheel machines, the weight for bearing two loop wheel machines is respectively to complete truss lifting operation in the performance range that respective lifting allows.When truss and fixed roller support, roller support is using the method for decomposing installation.Before truss lifting, roller support is first placed in bracket capital, is consistent with stent strut apical axis line.After truss upper seat is lifted on roller support top plate, review roller support and truss integral position are welded and fixed roller support bottom plate in the built-in fitting of bracket capital, roller support top plate and truss upper seat are then welded and fixed after errorless.Guarantee that the horizontal force that truss structure passes to support can be discharged after truss and roller support are fixed.
Description
Technical field
The present invention relates to oblique parallel-chord trusses to use roll shaft fabrication and installation method, the specially oblique whole Pin of parallel-chord truss
Double-machine lifting crane combination roller support installation engineering method.
Background technique
In coal mining enterprise and large chemical complex, carrying knot of the coal transporting trestle of ground production system as transportation system
Structure plays an important role, and coal transporting trestle mostly uses the structure type of oblique parallel-chord truss.Due to the large-scale defeated oblique trestle of coal
Upper lower fulcrum height difference is big, and truss monomer lifting weight is big, and mounting height is high, so in trestle truss hoisting process, purlin
The control of frame whole machine balancing becomes a difficult point；In order to guarantee truss overall structure safety, itself stress, roll shaft at the top of truss are discharged
Fixed support installation is again a priority control object.The present invention comes into being in this context, devises a set of for tiltedly flat
The whole Pin double-machine lifting crane of row truss structure and the construction for combining roller support installation.
Summary of the invention
The present invention provides the whole Pin double-machine lifting crane combination roller support installation engineering methods of oblique parallel-chord truss, solve
Oblique parallel-chord truss uses balance difficulties when two-shipper integral hoisting, while roller support decomposes installation, discharges purlin
Frame passes to the horizontal thrust of support, guarantees truss structure safety.
The present invention is achieved by the following technical scheme: the whole Pin double-machine lifting crane combination roller support of oblique parallel-chord truss
Installation engineering method, including the installation of steel truss on-site consolidation, stent strut apical axis line, absolute altitude repetition measurement, roller support, steel truss lifting
Fixed and measurement correction；
The following steps are included: steel truss is processed into semi-finished product in processing factory, every truss structure is divided into steel truss on-site consolidation
Several shippeds to erecting bed is assembled, and the lower edge H profile steel of a truss structure is looked in mounting platform over-assemble, centering
It is flat, after checking that size is errorless, it is welded and fixed；Seating side steel truss and upper lower chord member, make single truss structure connect into one
A entirety；Two temporary supports are placed on mattess, levelling capturing, single truss structure of the assembly welding after complete is hung to and is faced
When support on, allow truss support steel plate to be located in temporary support, control truss axis and temporary support axis be mutually 90 degree.For
Expand the pre-splicing loading amount in ground to the maximum extent, reduce high altitude operation, truss purlins, tie rod and truss side colored steel are pacified on ground
With truss integral hoisting after the completion of dress；
Stent strut apical axis line, absolute altitude repetition measurement the following steps are included: steel truss installation before, by absolute altitude pilot measurement to bracket capital
And make marks, it will be marked cross axis in length and breadth on bracket capital with theodolite, while on roller support and truss support
Four faces at place mark center line；
Roller support installation the following steps are included:
Roller support bottom plate is made of steel plate, and the roller support bottom plate made is placed in the built-in fitting of bracket capital
On, cross axis is mutually aligned, repetition measurement absolute altitude and center；
Roll shaft installation site line is finished in roller support bottom plate, roll shaft is 6 round steel, and the roll shaft made is placed on phase
The position answered, the box support for making forming are placed in roll shaft top, support are pushed to check rolling effect, detect to truss installa-tion
Roller support bottom plate is weldingly fixed on the built-in fitting of bracket capital after errorless, roller support is restored into installation condition, prepares purlin
Frame lifting；
Steel truss lifting is fixed the following steps are included: using the main hoisting machinery that two loop wheel machines are lifted as truss, large-tonnage is hung
The high pivot point support of vehicle lifting truss lower edge, the low pivot bearing of small tonnage crane lifting truss lower edge, is hung using size tonnage
4 lifting methods of vehicle two-shipper are by truss integral installation；Truss upper seat is welded and fixed with roller support top plate；
After measurement correction is the following steps are included: truss lifting is in place, repetition measurement is carried out to truss, with determining for truss lower edge both ends
Position label and the axis markers of bracket capital strictly position, and lower seat are welded and fixed after measurement is errorless, the water of entire truss
The rolling that flat power is released through roller support is adjusted.
Oblique parallel-chord truss lifting is the main hoisting machinery lifted using two loop wheel machines as truss, and large tonnage crane lifts by crane purlin
The high pivot point support of frame lower edge, the low pivot bearing of small tonnage crane lifting truss lower edge, using size tonnage crane two-shipper four
Lifting method is put by truss integral installation.By the reasonable distribution to equipment hoisting weight between two loop wheel machines, two are made to hang
The weight that machine is born is respectively to complete truss lifting operation in the performance range that respective lifting allows.Truss and roll shaft branch
When seat is fixed, roller support is using the method for decomposing installation.Before truss lifting, roller support is first placed in bracket capital, with
Stent strut apical axis line is consistent.After truss upper seat is lifted on roller support top plate, checks roller support and truss is whole
Body position is welded and fixed roller support bottom plate in the built-in fitting of bracket capital, roller support top plate is then welded and fixed after errorless
With truss upper seat.Guarantee that the horizontal force that truss structure passes to support can be discharged after truss and roller support are fixed.
For the large-scale defeated oblique trestle both ends fulcrum height difference of coal is big, truss length is long, monomer lifting weight is big, mounting height is high
Difficult point, the present invention the design of selection, hanging method to lifting equipment and decompose installation roller support by way of, both solved
The difficult point for oblique parallel chord truss lifting balance of having determined, while the method for decomposing installation roller support ensure that truss structure safety.
Specific embodiment
The whole Pin double-machine lifting crane combination roller support installation engineering method of oblique parallel-chord truss, including steel truss scene are spelled
Dress, the installation of stent strut apical axis line, absolute altitude repetition measurement, roller support, steel truss lifting is fixed and measurement corrects.
The following steps are included: steel truss is processed into semi-finished product in processing factory, every truss structure is divided into steel truss on-site consolidation
Several shippeds to erecting bed is assembled, and the lower edge H profile steel of a truss structure is looked in mounting platform over-assemble, centering
It is flat, after checking that size is errorless, it is welded and fixed；Seating side steel truss and upper lower chord member, make single truss structure connect into one
A entirety；Two temporary supports are placed on mattess, levelling capturing, single truss structure of the assembly welding after complete is hung to and is faced
When support on, allow truss support steel plate to be located in temporary support, control truss axis and temporary support axis be mutually 90 degree.For
Expand the pre-splicing loading amount in ground to the maximum extent, reduce high altitude operation, truss purlins, tie rod and truss side colored steel are pacified on ground
With truss integral hoisting after the completion of dress；
Stent strut apical axis line, absolute altitude repetition measurement the following steps are included: steel truss installation before, by absolute altitude pilot measurement to bracket capital
And make marks, it will be marked cross axis in length and breadth on bracket capital with theodolite, while on roller support and truss support
Four faces at place mark center line；
Roller support installation the following steps are included:
Roller support bottom plate is used to be made of 20mm thick steel plate, and the roller support bottom plate made is placed in stent strut
On the built-in fitting on top, cross axis is mutually aligned, repetition measurement absolute altitude and center；
Roll shaft installation site line is finished in roller support bottom plate, roll shaft is 6 Φ 40mm round steel, the roll shaft that will be made
It is placed on corresponding position, the box support for making forming is placed in roll shaft top, and support is pushed to check rolling effect, pacifies to truss
Roller support bottom plate is weldingly fixed on the built-in fitting of bracket capital after dress detection is errorless, roller support is restored into installation condition,
Prepare truss lifting；
Roller support bottom plate is weldingly fixed on the built-in fitting of bracket capital after truss installa-tion detection is errorless, while by purlin
Frame support is welded and fixed with roller support top plate；
Steel truss lifting is fixed the following steps are included: using the main hoisting machinery that two loop wheel machines are lifted as truss, large-tonnage is hung
The high pivot point support of vehicle lifting truss lower edge, the low pivot bearing of small tonnage crane lifting truss lower edge, is hung using size tonnage
4 lifting methods of vehicle two-shipper are by truss integral installation；
After measurement correction is the following steps are included: truss lifting is in place, repetition measurement is carried out to truss, with determining for truss lower edge both ends
Position label and the axis markers of bracket capital strictly position, and lower seat are welded and fixed after measurement is errorless, the water of entire truss
The rolling that flat power is released through roller support is adjusted.
Claims (1)
1. the oblique whole Pin double-machine lifting crane combination roller support installation engineering method of parallel-chord truss, it is characterised in that including steel truss
On-site consolidation, stent strut apical axis line, absolute altitude repetition measurement, roller support installation, steel truss lifting is fixed and measurement corrects；
The following steps are included: steel truss is processed into semi-finished product in processing factory, every truss structure is divided into several steel truss on-site consolidation
Shipped to erecting bed is assembled, and the lower edge H profile steel of a truss structure is levelling in mounting platform over-assemble, centering, inspection
Look into size it is errorless after, be welded and fixed；Seating side steel truss and upper lower chord member, make single truss structure connect into one it is whole
Body；Two temporary supports are placed on mattess, levelling capturing, single truss structure of the assembly welding after complete is hung to interim branch
In support, truss support steel plate is allowed to be located in temporary support, control truss axis and temporary support axis are mutually 90 degree, in order to most
Expand to limits the pre-splicing loading amount in ground, reduces high altitude operation, truss purlins, tie rod and truss side colored steel install on ground
Cheng Houtong truss integral hoisting；
Stent strut apical axis line, absolute altitude repetition measurement to bracket capital and do absolute altitude pilot measurement the following steps are included: before steel truss installation
Label, will be marked cross axis on bracket capital in length and breadth with theodolite, while on roller support and at truss support
Four faces mark center line；
Roller support installation the following steps are included: roller support bottom plate using steel plate production, the roller support bottom plate that will be made
It is placed on the built-in fitting of bracket capital, cross axis is mutually aligned, repetition measurement absolute altitude and center；In roller support bottom plate
Roll shaft installation site line is finished, roll shaft is 6 round steel, and the roll shaft made is placed on corresponding position, makes the box of forming
Support is placed in roll shaft top, and box support is pushed to check rolling effect, by roller support bottom after truss installa-tion detection is errorless
Plate is weldingly fixed on the built-in fitting of bracket capital, and roller support is restored installation condition, prepares truss lifting；
Steel truss lifting is fixed the following steps are included: using the main hoisting machinery that two loop wheel machines are lifted as truss, and large tonnage crane rises
The high pivot point support of hanging truss lower edge, the low pivot bearing of small tonnage crane lifting truss lower edge are double using size tonnage crane
4 lifting methods of machine are by truss integral installation；Truss upper seat is welded and fixed with roller support top plate；
After measurement correction is the following steps are included: truss lifting is in place, repetition measurement is carried out to truss, with the positioning mark at truss lower edge both ends
The axis markers of note and bracket capital strictly position, and lower seat are welded and fixed after measurement is errorless, the horizontal force of entire truss
The rolling for being released through roller support is adjusted.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710709467.7A CN107268453B (en) | 2017-08-18 | 2017-08-18 | The whole Pin double-machine lifting crane combination roller support installation engineering method of oblique parallel-chord truss |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710709467.7A CN107268453B (en) | 2017-08-18 | 2017-08-18 | The whole Pin double-machine lifting crane combination roller support installation engineering method of oblique parallel-chord truss |
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| Publication Number | Publication Date |
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| CN107268453A CN107268453A (en) | 2017-10-20 |
| CN107268453B true CN107268453B (en) | 2018-12-25 |
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| CN114411946B (en) * | 2021-12-21 | 2023-09-12 | 北京城建集团有限责任公司 | Construction method of ultra-long inverted triangle arc tube truss |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060022810A (en) * | 2004-09-08 | 2006-03-13 | 건융건설 주식회사 | A method of installation and dismantlement for a pipe which located in the downside of the upper part of the bridge and a equipment thereof |
| CN102635061A (en) * | 2012-04-18 | 2012-08-15 | 中建二局第三建筑工程有限公司 | Mountain stream river-crossing inclined zipper trestle and hoisting method thereof |
| CN104481148A (en) * | 2014-12-11 | 2015-04-01 | 中国十七冶集团有限公司 | Construction method of super-long thin-wall color steel tile roof |
| CN104532746A (en) * | 2014-12-15 | 2015-04-22 | 中铁建大桥工程局集团第五工程有限公司 | Construction method of upper structure of steel-concrete overlapping beam |
-
2017
- 2017-08-18 CN CN201710709467.7A patent/CN107268453B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060022810A (en) * | 2004-09-08 | 2006-03-13 | 건융건설 주식회사 | A method of installation and dismantlement for a pipe which located in the downside of the upper part of the bridge and a equipment thereof |
| CN102635061A (en) * | 2012-04-18 | 2012-08-15 | 中建二局第三建筑工程有限公司 | Mountain stream river-crossing inclined zipper trestle and hoisting method thereof |
| CN104481148A (en) * | 2014-12-11 | 2015-04-01 | 中国十七冶集团有限公司 | Construction method of super-long thin-wall color steel tile roof |
| CN104532746A (en) * | 2014-12-15 | 2015-04-22 | 中铁建大桥工程局集团第五工程有限公司 | Construction method of upper structure of steel-concrete overlapping beam |
Non-Patent Citations (1)
| Title |
|---|
| 大跨度钢桁架桥的施工与实践;刘亚琴;《四川水力发电》;20010331;第20卷(第1期);全文 * |
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