CN103790388B - Greatly install improve one's methods across the waft high-altitude of eaves of cantilever roofing steel - Google Patents
Greatly install improve one's methods across the waft high-altitude of eaves of cantilever roofing steel Download PDFInfo
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- CN103790388B CN103790388B CN201410076704.7A CN201410076704A CN103790388B CN 103790388 B CN103790388 B CN 103790388B CN 201410076704 A CN201410076704 A CN 201410076704A CN 103790388 B CN103790388 B CN 103790388B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 103
- 239000010959 steel Substances 0.000 title claims abstract description 103
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000009434 installation Methods 0.000 claims abstract description 22
- 238000000465 moulding Methods 0.000 claims description 11
- 241001669679 Eleotris Species 0.000 claims description 6
- 238000012407 engineering method Methods 0.000 abstract description 8
- 230000004888 barrier function Effects 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 16
- 238000010276 construction Methods 0.000 description 9
- 238000005452 bending Methods 0.000 description 5
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- 239000000463 material Substances 0.000 description 1
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Abstract
The present invention relates to and be applicable to 30m across the installation of choosing more than size 5m, more than 50m high-altitude above, outward, the roofing steel of component span-depth radio more than 30 wafts eaves.Technical problem to be solved by this invention is, provides a kind of mounting technique scheme, can realize the installation of eaves in limited space, high-altitude.Adopt this engineering method, successfully solve the technical barrier of eaves height sky installation of wafing across cantilever roofing steel greatly, less investment, cost is low, simple and efficient to handle, lifting speed is fast, operating environment safety, install very smooth, technical economic benefit is remarkable, obtains the favorable comment of owner, management and authorities.
Description
Technical field
The present invention relates to and be applicable to 30m across the installation of choosing more than size 5m, more than 50m high-altitude above, outward, the roofing steel of component span-depth radio more than 30 wafts eaves.
Background technology
Along with the rapid development of national economy, large-span space structure is flourish, and the design of architect is more and more bold, shows: span is increasing, and moulding is more and more novel, unique, and structure becomes increasingly complex.Traditional construction technology cannot satisfy the demands, so the change in construction technology becomes inevitable.
Be span 45m between the high building of two, Building Project 71.2m high-altitude, choose 10.9m roofing steel outward to waft eaves, by north and south two panels, centre connects with secondary beam and bending side bar, horizontal support forms, monolithic steel wafts eaves by a 45m across horizontal camber beam, 45m is across the unsettled straight beam chosen 2.8m steel outward and cornice, centre connects with secondary beam and horizontal cross brace composition, north and south two panels is arranged on 71.2m high-altitude, completely unsettled outside the disjunctor steel work of below, large tonnage crane enters on-site hoisting somewhat expensive, and on-the-spot tower crane cannot utilize, high altitude bulk is not only taken a lot of work but also take material, this brings very large difficulty to the installation that this engineering roofing steel wafts eaves.
The waft installed height mark of the single girder of eaves of this engineering steel is high, and reach 71.2m, span is large, reach 45m, rigidity is little, and girder specification is H1000 × 500 × 16 × 24, there are two girder mid portions also curved in horizontal curved, the self stability of single component and resistance to lateral bending poor ability; Structural configuration is complicated, and be Steel corridor below middle two camber beams, the girder being positioned at both sides is then completely unsettled.How high-quality, the installation task of the flexible girder steel of the complete cost engineering of high speed is the difficult problem of pendulum in face of us.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of mounting technique scheme, can realize the installation of eaves in limited space, high-altitude.
For completing foregoing invention task, the present invention is such realization: a kind ofly greatly install improve one's methods across the waft high-altitude of eaves of cantilever roofing steel, described be arranged on more than 30m span across the cantilever roofing steel eaves that wafts, choose the roofing of more than size 5m, more than 50m high-altitude, component span-depth radio more than 30 outward greatly; Described large be connected and composed by support connecting piece by the two panels monolithic steel eaves that wafts across the cantilever roofing steel eaves that wafts; It is characterized in that: comprise the following steps:
A sets up moulding bed
Described moulding bed is erected on disjunctor steel work top, and set up with fastener type steel pipe, horizon bar is completely taken in direction in length and breadth, step pitch 1500mm, and horizontal cross brace and vertical bracing are by specification, and vertical rod is near the top-bottom chord of disjunctor steel work primary and secondary truss;
B lifts spelling
The single girder of lifting splicing, middle camber beam and the straight beam on limit splice respectively good after, accurately its relative position of adjustment, by design pitch, centre connects supports with secondary beam and horizontal sharp knife, and overall spelling becomes firm monolithic steel to waft eaves; The waft two ends of eaves of monolithic steel after spelling are respectively square, and centre is hollow semicircle;
C sets up bracing frame
Bracing frame adopts fastener type steel pipe scaffold, and center is that roofing steel wafts eaves seat post axis, and north and south is to the concrete post of top;
D spreads slide rail
Bracing frame laterally lays sleeper, and slide rail is laid on the sleeper of two ends;
Described slide rail comprises the track at intermediate supports position-limited rail and top; Described intermediate supports position-limited rail is oppositely arranged by two limiting plates, and intermediate supports position-limited rail upper and lower is all in bell mouth shape; The track at described top is made up of horizontal slide plate and "T"-shaped balance plate; Described "T"-shaped balance plate is a pair, is built in the both sides of horizontal slide plate; The centre of two "T"-shaped balance plates is for installing intermediate supports position-limited rail;
E jacking puts off
Before slippage, utilize 4 jack to be waftd by monolithic steel eaves jack-up, the tonnage of jack is greater than monolithic steel and wafts 1/4 of eaves weight, the eaves that waftd by monolithic steel drops on slide rail, after slippage puts in place, to be waftd by monolithic steel eaves jack-up with jack, it is in place that the eaves that waftd by monolithic steel after removing slide rail is down to installation site;
F slippage
The concrete post of south and north flanks respectively arranges a Chain block, consider friction coefficient mu=0.1 ~ 0.2, the tonnage of Chain block is greater than monolithic steel and wafts 0.1 times of eaves weight, and is connected with girder by directive wheel, utilizes Chain block to draw the monolithic steel eaves that wafts and arrives above actual installation position;
G accurate positioning, bolt connect
Monolithic steel wafts after eaves slippage puts in place, and adjustment monolithic steel wafts eaves position, after dropping to capital, carry out accurate adjustment, is accurately in placely joined with bolts.
The upper and lower surface of the described top-bottom chord when setting up moulding bed is tight with many row of horizontal pipe thread.
This engineering method, uses compact simplified crane gear, can install and to waft eaves across cantilever roofing steel greatly in high-altitude; Not only solve the insoluble construction difficult problem of conventional construction method, and have significant Technological Economy usefulness: installations and facilities less investment, construction cost is low; Simple and efficient to handle, lifting speed is fast; Operating environment safety, installs very smooth; Installation integral rigidity is good, can guarantee that roofing steel wafts eaves installation quality.Do not land platform for lining set-up technology and waft along burst horizontal sliding technology across cantilever roofing steel greatly, thinking that there is novelty through identifying, reaching domestically leading level.
Described slide rail is the track comprising intermediate supports position-limited rail and top; Described intermediate supports position-limited rail is oppositely arranged by two limiting plates, and intermediate supports position-limited rail upper and lower is all in bell mouth shape; The track at described top is made up of horizontal slide plate and "T"-shaped balance plate; Described "T"-shaped balance plate is a pair, is built in the both sides of horizontal slide plate; The centre of two "T"-shaped balance plates is for installing intermediate supports position-limited rail.
Be improved further technique scheme, steel wafts the single component Side Bend Control of eaves at l/1000, and should not be greater than 30mm, and distortion controls at h/250, and should not be greater than 10mm, and amount of deflection controls at l/500, and should not be greater than 15mm.
This engineering method is applicable to install across the waft high-altitude of eaves of cantilever roofing steel greatly, be specially adapted to 30m across choosing more than size 5m, more than 50m high-altitude above, outward, the roofing steel of component span-depth radio more than 30 eaves that wafts installs.Be characterized in:
(1) use compact simplified crane gear, can install and to waft eaves across cantilever roofing steel greatly in high-altitude;
(2) not only solve the insoluble construction difficult problem of conventional construction method, and there is significant Technological Economy usefulness.
1. installations and facilities less investment, construction cost is low;
2. simple and efficient to handle, lifting speed is fast;
3. operating environment safety, installs very smooth;
4. integral rigidity is installed good, can guarantees that roofing steel wafts eaves installation quality.
Adopt and do not land platform for lining set-up technology and waft along burst horizontal sliding technology across cantilever roofing steel greatly, break the normal procedure, innovatively do not landing girder steel spelling on platform for lining, waft on eaves seat post axis at high building roofing steel, set up steel tube frame and make slideway, being waftd by roofing steel along burst from centre, outside horizontal sliding puts in place, then between sheet, secondary member is connected, complete and install across the cantilever roofing steel eaves that wafts greatly, overcome installed height mark high, span is large, single stiffness of structural member is little, self stability and resistance to lateral bending ability, the difficulties such as on-the-spot tower crane cannot utilize, less investment, cost is low, simple and efficient to handle, lifting speed is fast, operating environment safety, install very smooth, advanced technology, economical rationality, safe and reliable, convenient and swift, very applicable for similar large steel structure installation engineering.
Apply this engineering method, adopt in Comprehensive Administrative service center of Rugao City and do not land platform for lining set-up technology and waft along burst horizontal sliding technology across cantilever roofing steel greatly, break the normal procedure, innovatively do not landing girder steel spelling on platform for lining, waft on eaves seat post axis at high building roofing steel, set up steel tube frame and make slideway, being waftd by roofing steel along burst from centre, outside horizontal sliding puts in place, then between sheet, secondary member is connected, complete and install across the cantilever roofing steel eaves that wafts greatly, installation integral rigidity is good, quality can ensure, the lateral bending of single component, distortion and amount of deflection can meet the demands.
Proved by cases of engineering, this engineering method key technology is effective, ripe, reliable, good in economic efficiency, can ensure the accuracy of construction, safety.
This engineering method is broken the normal procedure, innovatively have employed the reverse component of subregion and tiltedly hang technology, overcome little, the on-the-spot tower crane of installing space or large-scale crane and the difficulty such as cannot to utilize, solve the technical barrier in the disjunctor steel structure hoisting of high-altitude, Comprehensive Administrative service center of Rugao City engineer applied result shows, this engineering method key technology is reliably effective, advanced and applicable, expense is low, and the duration economizes, and has a good application prospect.
Adopt this engineering method, successfully solve the technical barrier of eaves height sky installation of wafing across cantilever roofing steel greatly, less investment, cost is low, simple and efficient to handle, lifting speed is fast, operating environment safety, install very smooth, technical economic benefit is remarkable, obtains the favorable comment of owner, management and authorities.
Accompanying drawing explanation
Fig. 1 is the structural representation of eaves of wafing.
Fig. 2 is slide rail schematic diagram.
Fig. 3 is the schematic diagram of slideway carriage.
Fig. 4 is slide rail top view.
Detailed description of the invention
In order to the feature and the advantage that further allow the art personnel understand this patent, below in conjunction with accompanying drawing, this patent is further described.
As shown in the figure, be describedly arranged on more than 30m span across the cantilever roofing steel eaves 4 that wafts, choose the roofing of more than size 5m, more than 50m high-altitude, component span-depth radio more than 30 outward greatly; Steel wafts the single component Side Bend Control of eaves at l/1000, and should not be greater than 30mm, and distortion controls at h/250, and should not be greater than 10mm, and amount of deflection controls at l/500, and should not be greater than 15mm.The waft two panels two ends of eaves of described steel are respectively square, and centre is hollow semicircle; The two panels steel eaves that wafts connects into entirety by support connecting piece.Comprise the following steps:
A sets up moulding bed
Moulding bed is set up on disjunctor steel work top, set up with fastener type steel pipe, because moulding bed is set up for not landing, vertical pole ' s span calculates by assembled load to be determined, horizon bar is completely taken in direction in length and breadth, step pitch 1500mm, and horizontal cross brace and vertical bracing are by specification, vertical rod is near the top-bottom chord of disjunctor steel work primary and secondary truss, and tight with four row of horizontal pipe threads in the upper and lower surface of upper lower edge;
B lifts spelling
The single girder of lifting splicing, middle camber beam and the straight beam on limit splice respectively good after, accurately its relative position of adjustment, by design pitch, centre connects supports with secondary beam and horizontal sharp knife, and overall spelling becomes firm monolithic steel to waft eaves;
C sets up bracing frame
Bracing frame adopts fastener type steel pipe scaffold, and center is that roofing steel wafts eaves seat post axis, and north and south is to the concrete post of top; The upper and lower surface of the described top-bottom chord when setting up moulding bed is tight with many row of horizontal pipe thread;
D spreads slide rail
Bracing frame laterally lays sleeper 1, and slide rail is laid on sleeper 1; Described slide rail is made up of the track 2 at two ends tie 1, intermediate supports position-limited rail 3 and top; Described intermediate supports position-limited rail is oppositely arranged by two limiting plates, and its upper and lower is all in bell mouth shape; The track at described top is made up of horizontal slide plate and "T"-shaped balance plate; Described "T"-shaped balance plate is a pair, is built in the both sides of horizontal slide plate; The centre of two "T"-shaped balance plates is for installing intermediate supports position-limited rail.
E jacking puts off
Before slippage, utilize 4 jack to be waftd by monolithic steel eaves jack-up, the tonnage of jack is greater than monolithic steel and wafts 1/4 of eaves weight, and after lay sliding rail, the eaves that waftd by monolithic steel drops on slide rail.After slippage puts in place, to be waftd by monolithic steel eaves jack-up with jack, it is in place that the eaves that waftd by monolithic steel after removing sliding rail is down to installation site;
F slippage
The concrete post of south and north flanks respectively arranges a Chain block, consider friction coefficient mu=0.1 ~ 0.2, the tonnage of Chain block is greater than monolithic steel and wafts 0.1 times of eaves weight, and is connected with girder by directive wheel, utilizes Chain block to draw the monolithic steel eaves that wafts and arrives above actual installation position;
G accurate positioning, bolt connect
Monolithic steel wafts after eaves slippage puts in place, and adjustment monolithic steel wafts eaves position, after dropping to capital, carry out accurate adjustment, is accurately in placely joined with bolts.
Adopt and do not land platform for lining set-up technology and waft along burst horizontal sliding technology across cantilever roofing steel greatly, break the normal procedure, innovatively do not landing girder steel spelling on platform for lining, waft on eaves seat post axis at high building roofing steel, set up steel tube frame and make slideway, being waftd by roofing steel along burst from centre, outside horizontal sliding puts in place, then between sheet, secondary member is connected, complete and install across the cantilever roofing steel eaves that wafts greatly, overcome installed height mark high, span is large, single stiffness of structural member is little, self stability and resistance to lateral bending ability, the difficulties such as on-the-spot tower crane cannot utilize, less investment, cost is low, simple and efficient to handle, lifting speed is fast, operating environment safety, install very smooth, advanced technology, economical rationality, safe and reliable, convenient and swift, very applicable for similar large steel structure installation engineering.
Claims (2)
1. greatly install improve one's methods across the waft high-altitude of eaves of cantilever roofing steel for one kind, described be arranged on more than 30m span across the cantilever roofing steel eaves that wafts, choose the roofing of more than size 5m, more than 50m high-altitude, component span-depth radio more than 30 outward greatly; Described large be connected and composed by support connecting piece by the two panels monolithic steel eaves that wafts across the cantilever roofing steel eaves that wafts; It is characterized in that: comprise the following steps:
A sets up moulding bed
Described moulding bed is erected on disjunctor steel work top, and set up with fastener type steel pipe, horizon bar is completely taken in direction in length and breadth, step pitch 1500mm, and horizontal cross brace and vertical bracing are by specification, and vertical rod is near the top-bottom chord of disjunctor steel work primary and secondary truss;
B lifts spelling
The single girder of lifting splicing, middle camber beam and the straight beam on limit splice respectively good after, accurately its relative position of adjustment, by design pitch, centre connects supports with secondary beam and horizontal sharp knife, and overall spelling becomes firm monolithic steel to waft eaves; The waft two ends of eaves of monolithic steel after spelling are respectively square, and centre is hollow semicircle;
C sets up bracing frame
Bracing frame adopts fastener type steel pipe scaffold, and center is that roofing steel wafts eaves seat post axis, and north and south is to the concrete post of top;
D spreads slide rail
Bracing frame laterally lays sleeper, and slide rail is laid on the sleeper of two ends;
Described slide rail comprises the track at intermediate supports position-limited rail and top; Described intermediate supports position-limited rail is oppositely arranged by two limiting plates, and intermediate supports position-limited rail upper and lower is all in bell mouth shape; The track at described top is made up of horizontal slide plate and "T"-shaped balance plate; Described "T"-shaped balance plate is a pair, is built in the both sides of horizontal slide plate; The centre of two "T"-shaped balance plates is for installing intermediate supports position-limited rail;
E jacking puts off
Before slippage, utilize 4 jack to be waftd by monolithic steel eaves jack-up, the tonnage of jack is greater than monolithic steel and wafts 1/4 of eaves weight, the eaves that waftd by monolithic steel drops on slide rail, after slippage puts in place, to be waftd by monolithic steel eaves jack-up with jack, it is in place that the eaves that waftd by monolithic steel after removing slide rail is down to installation site;
F slippage
The concrete post of south and north flanks respectively arranges a Chain block, consider friction coefficient mu=0.1 ~ 0.2, the tonnage of Chain block is greater than monolithic steel and wafts 0.1 times of eaves weight, and is connected with girder by directive wheel, utilizes Chain block to draw the monolithic steel eaves that wafts and arrives above actual installation position;
G accurate positioning, bolt connect
Monolithic steel wafts after eaves slippage puts in place, and adjustment monolithic steel wafts eaves position, after dropping to capital, carry out accurate adjustment, is accurately in placely joined with bolts.
2. according to claim 1ly a kind ofly greatly install improve one's methods across the waft high-altitude of eaves of cantilever roofing steel, be characterised in that, the upper and lower surface of the described top-bottom chord when setting up moulding bed is tight with many row of horizontal pipe thread.
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| CN105019557B (en) * | 2015-08-11 | 2017-05-17 | 中建二局第三建筑工程有限公司 | Construction method for flying-wing-type formwork space truss structure |
| CN112609912B (en) * | 2020-12-10 | 2021-12-21 | 中铁五局集团建筑工程有限责任公司 | Construction method for newly building canopy in overhead operation subway station |
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| CN102635209A (en) * | 2012-05-23 | 2012-08-15 | 中建二局第三建筑工程有限公司 | Cornice steel skeleton and bracket steel skeleton for large-span big roof of pseudo-classic architecture and construction method of cornice steel skeleton and bracket steel skeleton |
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| JPH08109678A (en) * | 1994-10-11 | 1996-04-30 | Takenaka Komuten Co Ltd | Execution method of large-sized roof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635209A (en) * | 2012-05-23 | 2012-08-15 | 中建二局第三建筑工程有限公司 | Cornice steel skeleton and bracket steel skeleton for large-span big roof of pseudo-classic architecture and construction method of cornice steel skeleton and bracket steel skeleton |
Non-Patent Citations (1)
| Title |
|---|
| 周文,石光明,邹科华,纪红兵.45m跨柔性钢梁高空滑移安装技术.《施工技术》.2008,第37卷 * |
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