CN107268453A - The whole Pin double-machine lifting cranes combination roller support installation engineering method of oblique parallel-chord truss - Google Patents
The whole Pin double-machine lifting cranes combination roller support installation engineering method of oblique parallel-chord truss Download PDFInfo
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- CN107268453A CN107268453A CN201710709467.7A CN201710709467A CN107268453A CN 107268453 A CN107268453 A CN 107268453A CN 201710709467 A CN201710709467 A CN 201710709467A CN 107268453 A CN107268453 A CN 107268453A
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- truss
- roller support
- support
- lifting
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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 cranes 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, make the weight that two loop wheel machines are born respectively in the performance range that respective lifting allows so as to complete truss lifting operation.When truss is fixed with roller support, the method that roller support is installed using decomposing.Before truss lifting, roller support is first placed in support capital, is consistent with stent strut apical axis line.After truss upper seat is lifted on roller support top plate, check roller support and truss integral position, it is errorless after be welded and fixed roller support bottom plate in the built-in fitting of support capital, be then welded and fixed roller support top plate and truss upper seat.Ensure that truss can discharge the horizontal force that truss structure passes to bearing after being fixed with roller support.
Description
Technical field
Roll shaft fabrication and installation method, the specially oblique whole Pin of parallel-chord truss are used the present invention relates to oblique parallel-chord truss
Double-machine lifting crane combination roller support installation engineering method.
Background technology
In coal mining enterprise and large chemical complex, the coal transporting trestle of ground production system as transportation system carrying knot
Structure is played an important role, and the structure type of oblique parallel-chord truss is used coal transporting trestle more.Due to the large-scale defeated oblique trestle of coal
The upper lower fulcrum discrepancy in elevation is big, and truss monomer lifting weight is big, and setting height(from bottom) is high, so in trestle truss hoisting process, purlin
The control of frame whole machine balancing turns into a difficult point；In order to ensure truss overall structure safety, roll shaft at the top of itself stress, truss is discharged
It is again a priority control object that bearing, which is installed fixed,.The present invention arises at the historic moment in this context, devises a set of for tiltedly flat
The whole Pin double-machine lifting cranes of row truss structure simultaneously combine the construction that roller support is installed.
The content of the invention
The invention provides the whole Pin double-machine lifting cranes combination roller support installation engineering method of oblique parallel-chord truss, solve
Oblique parallel-chord truss uses balance difficulties during two-shipper integral hoisting, is installed while roller support is decomposed, discharges purlin
Frame passes to the horizontal thrust of bearing, it is ensured that truss structure safety.
The present invention adopts the following technical scheme that realization:The whole Pin double-machine lifting cranes combination roller support of oblique parallel-chord truss
Installation engineering method, including steel truss on-site consolidation, stent strut apical axis line, absolute altitude repetition measurement, roller support are installed, steel truss lifting
Fixed and measurement correction；
Steel truss on-site consolidation comprises the following steps：Steel truss is processed into semi-finished product in processing factory, is divided into some per truss structure
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 is mutually 90 degree with temporary support axis.In order to most
Expand to limits the pre-splicing loading amount in ground, reduce work high above the ground, truss purlins, tie rod and truss side colored steel are installed on ground
Cheng Houtong truss integral hoistings；
Stent strut apical axis line, absolute altitude repetition measurement comprise the following steps：Before steel truss installation, by absolute altitude pilot measurement is to support capital and does
Mark, will be marked cross axis in length and breadth with theodolite on support capital, while on roller support and at truss support
Four faces mark center line；
Roller support, which is installed, to be comprised the following steps：
Roller support bottom plate is made using steel plate, and the roller support bottom plate made is placed on the built-in fitting of support capital,
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 accordingly
Position, the box bearing for making shaping is placed in roll shaft top, promotes bearing to check rolling effect, treats that truss installa-tion detection is errorless
Roller support bottom plate is weldingly fixed on the built-in fitting of support capital afterwards, roller support is recovered into installment state, prepares truss and hangs
Dress；
Steel truss lifting fixation comprises the following steps：The main hoisting machinery lifted using two loop wheel machines as truss, large tonnage crane rises
The high pivot point bearing of hanging truss lower edge, the low fulcrum bearing of small tonnage crane lifting truss lower edge is 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；
Measurement correction comprises the following steps：After truss lifting is in place, repetition measurement is carried out to truss, with the positioning mark at truss lower edge two ends
The axis markers of note and support capital are strictly positioned, and are welded and fixed lower seat after measurement is errorless, the horizontal force of whole truss
It is released through the rolling regulation of roller support.
Oblique parallel-chord truss lifting is the main hoisting machinery lifted using two loop wheel machines as truss, large tonnage crane lifting purlin
The high pivot point bearing of frame lower edge, the low fulcrum 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 so as to complete truss lifting operation in the performance range that respective lifting allows.Truss and roll shaft branch
When seat is fixed, the method that roller support is installed using decomposing.Before truss lifting, roller support is first placed in support capital, with
Stent strut apical axis line is consistent.After truss upper seat is lifted on roller support top plate, roller support is checked whole with truss
Body position, it is errorless after be welded and fixed roller support bottom plate in the built-in fitting of support capital, be then welded and fixed roller support top plate
With truss upper seat.Ensure that truss can discharge the horizontal force that truss structure passes to bearing after being fixed with roller support.
For the large-scale defeated oblique trestle two ends fulcrum discrepancy in elevation of coal is big, truss length length, monomer lifting weight are big, setting height(from bottom) is high
Difficult point, the present invention to the selection of crane gear, the design of hanging method and decompose install 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.
Embodiment
The whole Pin double-machine lifting cranes combination roller support installation engineering method of oblique parallel-chord truss, including steel truss scene are spelled
Dress, stent strut apical axis line, absolute altitude repetition measurement, roller support are installed, steel truss lifting is fixed and measurement correction.
Steel truss on-site consolidation comprises the following steps：Steel truss is processed into semi-finished product in processing factory, is divided into per truss structure
Some 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
Individual entirety；Two temporary supports are placed on mattess, levelling capturing, single truss structure of the assembly welding after complete is hung to and faced
When support on, allow truss support steel plate to be located in temporary support, control truss axis and temporary support axis are mutually 90 degree.For
Expand the pre-splicing loading amount in ground to greatest extent, reduce work high above the ground, 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 comprise the following steps：Before steel truss installation, by absolute altitude pilot measurement is to support capital and does
Mark, will be marked cross axis in length and breadth with theodolite on support capital, while on roller support and at truss support
Four faces mark center line；
Roller support, which is installed, to be comprised the following steps：
Roller support bottom plate is made using 20mm steel plates, and the roller support bottom plate made is placed in into support capital
On built-in fitting, 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, and the roll shaft made is placed on
Corresponding position, the box bearing for making shaping is placed in roll shaft top, promotes bearing to check rolling effect, treats that truss installa-tion is examined
Roller support bottom plate is weldingly fixed on the built-in fitting of support capital after survey is errorless, roller support is recovered into installment state, is prepared
Truss is lifted；
Roller support bottom plate is weldingly fixed on the built-in fitting of support capital after truss installa-tion detection is errorless, while by truss branch
Seat is welded and fixed with roller support top plate；
Steel truss lifting fixation comprises the following steps：The main hoisting machinery lifted using two loop wheel machines as truss, large tonnage crane rises
The high pivot point bearing of hanging truss lower edge, the low fulcrum bearing of small tonnage crane lifting truss lower edge is double using size tonnage crane
4 lifting methods of machine are by truss integral installation；
Measurement correction comprises the following steps：After truss lifting is in place, repetition measurement is carried out to truss, with the positioning mark at truss lower edge two ends
The axis markers of note and support capital are strictly positioned, and are welded and fixed lower seat after measurement is errorless, the horizontal force of whole truss
It is released through the rolling regulation of roller support.
Claims (1)
1. the oblique whole Pin double-machine lifting cranes 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 are installed, steel truss lifting is fixed and measurement correction；
Steel truss on-site consolidation comprises the following steps：Steel truss is processed into semi-finished product in processing factory, is divided into some per truss structure
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 is mutually 90 degree with temporary support axis, in order to most
Expand to limits the pre-splicing loading amount in ground, reduce work high above the ground, truss purlins, tie rod and truss side colored steel are installed on ground
Cheng Houtong truss integral hoistings；
Stent strut apical axis line, absolute altitude repetition measurement comprise the following steps：Before steel truss installation, by absolute altitude pilot measurement is to support capital and does
Mark, will be marked cross axis in length and breadth with theodolite on support capital, while on roller support and at truss support
Four faces mark center line；
Roller support, which is installed, to be comprised the following steps：Roller support bottom plate is made using steel plate, by the roller support bottom plate made
On the built-in fitting for being placed in support 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 into corresponding position, the box of shaping is made
Bearing is placed in roll shaft top, promotes bearing to check rolling effect, welds roller support bottom plate after truss installa-tion detection is errorless
Connect and be fixed on the built-in fitting of support capital, roller support is recovered into installment state, prepare truss lifting；
Steel truss lifting fixation comprises the following steps：The main hoisting machinery lifted using two loop wheel machines as truss, large tonnage crane rises
The high pivot point bearing of hanging truss lower edge, the low fulcrum bearing of small tonnage crane lifting truss lower edge is 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；
Measurement correction comprises the following steps：After truss lifting is in place, repetition measurement is carried out to truss, with the positioning mark at truss lower edge two ends
The axis markers of note and support capital are strictly positioned, and are welded and fixed lower seat after measurement is errorless, the horizontal force of whole truss
It is released through the rolling regulation of roller support.
Priority Applications (1)
| 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 true CN107268453A (en) | 2017-10-20 |
| CN107268453B CN107268453B (en) | 2018-12-25 |
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| CN201710709467.7A Active 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114411946A (en) * | 2021-12-21 | 2022-04-29 | 北京城建集团有限责任公司 | Construction method of overlong inverted triangular arc-shaped pipe truss |
Citations (4)
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| 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 |
|---|
| 刘亚琴: "大跨度钢桁架桥的施工与实践", 《四川水力发电》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114411946A (en) * | 2021-12-21 | 2022-04-29 | 北京城建集团有限责任公司 | Construction method of overlong inverted triangular arc-shaped pipe truss |
| 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 |
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| CN107268453B (en) | 2018-12-25 |
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