CN107165281A - A kind of high-altitude long-span overhung steel platform mould bases construction - Google Patents
A kind of high-altitude long-span overhung steel platform mould bases construction Download PDFInfo
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- CN107165281A CN107165281A CN201710467103.2A CN201710467103A CN107165281A CN 107165281 A CN107165281 A CN 107165281A CN 201710467103 A CN201710467103 A CN 201710467103A CN 107165281 A CN107165281 A CN 107165281A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 94
- 239000010959 steel Substances 0.000 title claims abstract description 94
- 238000010276 construction Methods 0.000 title claims abstract description 69
- 239000000463 material Substances 0.000 claims abstract description 11
- 238000003466 welding Methods 0.000 claims abstract description 7
- 238000002360 preparation method Methods 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims description 24
- 210000003205 Muscles Anatomy 0.000 claims description 9
- 239000000725 suspension Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 6
- 238000009416 shuttering Methods 0.000 claims description 6
- 210000001138 Tears Anatomy 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 5
- 239000002965 rope Substances 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 claims description 4
- 108010068370 Glutens Proteins 0.000 claims description 3
- 210000001624 Hip Anatomy 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 238000004873 anchoring Methods 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 235000021312 gluten Nutrition 0.000 claims description 3
- -1 polypropylene Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 2
- 230000003014 reinforcing Effects 0.000 description 4
- 239000004567 concrete Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 235000015170 shellfish Nutrition 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000272165 Charadriidae Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 241001310793 Podium Species 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000029578 entry into host Effects 0.000 description 1
- 239000000789 fastener Substances 0.000 description 1
- 230000002349 favourable Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 229920001778 nylon Polymers 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
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- 238000004064 recycling Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/342—Structures covering a large free area, whether open-sided or not, e.g. hangars, halls
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/34—Extraordinary structures, e.g. with suspended or cantilever parts supported by masts or tower-like structures enclosing elevators or stairs; Features relating to the elastic stability
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/18—Scaffolds essentially supported by building constructions, e.g. adjustable in height supported by cantilevers or other provisions mounted in openings in the building, e.g. window openings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/007—Devices and methods for erecting scaffolds, e.g. automatic scaffold erectors
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/04—Means for fastening, supporting, or bracing scaffolds on or against building constructions
Abstract
The invention discloses a kind of high-altitude long-span overhung steel platform mould bases construction, including preparation of construction, built-in fitting construction, girder is installed, the single product truss in big angle is installed, diagonal brace is installed, secondary beam, laying steel plate are installed, the anti-skidding guide pile of welding outrigger, outrigger is set up, the step such as brace and dismounting is installed.The present invention successfully solves the construction difficult problem of the baroque special-shaped large span suspended structure at high altitude of hanging garden layer, processing is simple, easy construction, safety coefficient are high, work efficiency is high, it is minimum that operation side is influenceed, influence small to the duration, install and Demolition Construction simplicity, material are repeated and be used in turn, meet green construction requirement.
Description
Technical field
It is to be related to one kind suitable for industrial big with civil buildings high-altitude specifically the present invention relates to the realm of building construction
The construction at the positions such as span cantilevered structure.
Background technology
In recent years, in modern building design frequently with High Large Cantilever gimmick, use function and handsome in appearance to meet
Demand.The high building middle part of public building and Super High commercial and residential building and top extent, it is spacious, penetrating, broad view to reach
Architectural effect, sets the overhead Zhongting of multilayer sometimes；While the individual character in order to make widely known building, high building alien invasion can also be set
Encorbelment beyond architectural plane several meters of cantilevered structure, the unique model and majestic appearance graceful bearing of prominent building.
But high-altitude long-span overhung steel platform mould bases has that span is big, height is high, construction loads is big, difficulty of construction is high
Feature, therefore how to ensure construction stability, improve efficiency of construction, the accelerating construction progress saving energy as high-altitude long-span overhung
The problem faced in structure construction procedure.
The content of the invention
In order to overcome the shortcomings of existing technology, the present invention provides a kind of high-altitude long-span overhung steel platform mould bases construction work
Method.
Technical solution of the present invention is as described below：
A kind of high-altitude long-span overhung steel platform mould bases construction, it is characterised in that comprise the following steps：
Step 1, progress preparation of construction：The supply producer of each material is selected, construction equipment, apparatus, organizing construction's technology is got out
Workman is confided a technological secret；
Step 2, the construction for carrying out built-in fitting：Construction including thrust block built-in fitting, girder positioning anchor ring construction and tiltedly
The construction of pull bar built-in fitting；
Step 3, installation girder：Anchor ring pressing plate and nut rotation are put on anchoring filament, girder is hung to installation site by tower crane, and screws spiral shell
Cap；
Step 4, the single product truss in installation big angle：Truss is hung to installation site by tower crane, truss is aligned into the pre-buried place of placement anchor ring, really
After Dingan County is trued up really, anchor ring pressing plate and nut are screwed, lower floor's hound of encorbelmenting is welded with thrust block built-in fitting, and to nut
Dynamics inspection is tightened in progress, and weld seam is detected；
Step 5, installation diagonal brace：Suspension centre ring is welded in termination at the top of diagonal brace, and tower crane is hung to installation place, by the flat lifting of polypropylene fibre
Band is fixed under girder in advance through suspension centre ring, and termination is welded on girder diagonal brace mark, the weldering of diagonal brace bottom termination at the top of diagonal brace
It is connected on the pre- plate of overhang layer lower floor thrust block；
Step 6, installation secondary beam：Secondary beam is placed at the secondary beam mark point on girder, and secondary beam is welded with girder；
Step 7, laying steel plate, by steel plate paving secondary beam, carry out multiple spot welding with secondary beam and are connected；
Step 8, the anti-skidding guide pile of outrigger is welded on secondary beam；
Step 9, set up outrigger：Handling outrigger steel pipe carries out erection, wherein first vertical rod sleeve of outrigger stands in outer to high building
On frame slide resistant pile；
Step 10, installation brace：Brace is connected to the pull bar suspension ring and brace built-in fitting of girder respectively；
Step 11, dismounting, after every section of last layer of support for shuttering has been removed, carry out high-altitude long-span overhung steel platform mould bases and tear open
Remove.
According to the present invention of such scheme, it is characterised in that also including deformation observation the step of：Platform system sets up completion
Carry out first time deformation observation；Platform topsides support for shuttering, which is set up, finishes second of observation of progress；In upper floors beam slab concrete
In casting process, monitored in real time；Platform system load increased, and be observed once, until platform system deformation is steady
It is fixed.
According to the present invention of such scheme, it is characterised in that in the construction of the thrust block built-in fitting of the step 2,
Line setting is intervened after the completion of the main beam steel bar colligation of overhang layer lower floor, and pre-buried point is welded on girder gluten.
Further, thrust block built-in fitting includes steel plate and reinforcing bar, and the steel plate is welded to connect with shaped steel, the reinforcing bar
It is welded to connect with the steel plate.
According to the present invention of such scheme, it is characterised in that fixed in the construction of the girder positioning anchor ring of the step 2
Position unwrapping wire is intervened after the completion of laminate bottom muscle colligation of encorbelmenting, and the girder positioning anchor ring with pvc pipes is placed in into correspondence position,
By girder positioning anchor ring and plate muscle colligation.
Further, the girder positioning anchor ring is can have enough to meet the need regularization anchor ring, its round steel for including U-shaped and square opening angle
Steel, the square opening angle steel is enclosed on the round steel, and is fixedly connected by nut with the round steel.
It is fixed according to the present invention of such scheme, it is characterised in that in the construction of the brace built-in fitting of the step 2
Position unwrapping wire is intervened after the completion of the main beam steel bar colligation in overhang layer upper strata, and the screw rod embedded part with pvc pipes is placed in into correspondence position
Put, embedded part and beam waist muscle are subjected to colligation.
Further, the brace built-in fitting include steel plate and with connected vertically two blocks of side plates of the steel plate, two pieces
Pass through round steel piercing welding between the side plate.
According to the present invention of such scheme, it is characterised in that the single product truss in big angle in the step 3 includes truss girder
And batter brace, web member is provided between the truss girder and batter brace.
7th, high-altitude long-span overhung steel platform mould bases construction according to claim 6, it is characterised in that described
Web member includes two perpendicular web members and a diagonal web member, and the two ends of the diagonal web member are separately fixed at the root of two perpendicular web members
Portion.
According to the present invention of such scheme, it is characterised in that in the step 9, the brace includes upper connecting rod with
Pull bar, is connected between the upper connecting rod and the lower pull bar by flower basket bolt,
Further, the upper connecting rod and the lower pull bar are round steel.
According to the present invention of such scheme, it is characterised in that in the step 11, the order of dismounting is：Remove scaffold
→ remove brace and oblique pull steel wire rope → dismounting level closing steel plate → dismounting I-steel secondary beam → dismounting and encorbelment girder and tiltedly
Support is overall.
According to the present invention of such scheme, its advantage is, steel platform processing of the present invention is simple, and stability is high, applies
Work is easy, and safety coefficient is high, and work progress is safe and reliable, system easy to control the quality；Platform girder and diagonal brace can be processed outside the venue
Form one（Single truss structure）, standardized construction, work efficiency is high, it is minimum that operation side is influenceed, influence small to the duration；The present invention
Take shaped steel processing, bolt and be welded to connect, install and Demolition Construction simplicity, material are repeated and be used in turn, meet green and apply
Work requirement.
Embodiment
The present invention is further described with reference to embodiment：
A kind of high-altitude long-span overhung steel platform mould bases construction, comprises the following steps：
First, preparation of construction
Deepen Design is completed before construction, various material supply producers is selected, gets out construction equipment apparatus and other associated materials,
Organizing construction skilled worker is confided a technological secret.
2nd, built-in fitting is constructed
1st, thrust block embedded part：Using in pre- overhang layer lower floor reinforced concrete girder of nuzzling, embedded part iron plate is with dowel in processing
Factory is welded to connect, and weld seam is full.Thrust block built-in fitting includes steel plate and reinforcing bar, and the steel plate is welded to connect with shaped steel, described
Reinforcing bar is welded to connect with the steel plate.
Line setting is intervened in time after the completion of the main beam steel bar colligation of overhang layer lower floor.According to embedded part location dimension in drawing
Accurate unwrapping wire, to reduce embedded part by other dynamic interferences, embedded part point is welded on girder gluten, and ensure that embedded part position is accurate.
2nd, girder positioning anchor ring embedded part：Girder positioning anchor ring is can have enough to meet the need regularization anchor ring, its round steel for including U-shaped and side
Bicker steel, square opening angle steel is enclosed on round steel, and is fixedly connected by nut with round steel.
Line setting is intervened in time after the completion of laminate bottom muscle colligation of encorbelmenting.Accurately put according to embedded part location dimension in drawing
Line, accurate location is placed in by the anchor ring embedded part with pvc pipes, to reduce embedded part by other dynamic interferences, by embedded part and plate muscle
Carry out colligation.
3rd, brace embedded part:Brace built-in fitting include steel plate and with connected vertically two blocks of side plates of steel plate, the side plate
Between pass through round steel piercing welding.
Line setting is intervened in time after the completion of the main beam steel bar colligation in overhang layer upper strata.According to embedded part location dimension in drawing
Accurate unwrapping wire, accurate location is placed in by the screw rod embedded part with pvc pipes, to reduce embedded part by other dynamic interferences, by embedded part
Colligation is carried out with beam waist muscle.
3rd, the single product truss installa-tion of girder and big angle
Before erection of main beam, first anchor ring pressing plate and nut rotation are put on anchoring filament, girder is hung to installation site by tower crane, and girder is laid
After accurate location, tightening nuts are then carried out tightening dynamics inspection with torque spanner.
Big angle list product truss installa-tion：Truss is hung to installation site by tower crane, and truss is aligned into the pre-buried place of placement anchor ring, it is determined that
After installing accurately, anchor ring pressing plate and nut are screwed, lower floor's hound of encorbelmenting is welded with thrust block built-in fitting, and weld seam is full.
Then nut is carried out to tighten dynamics inspection, weld seam is detected.
4th, diagonal brace is installed
Suspension centre ring is welded in termination at the top of diagonal brace, and during installation, tower crane is hung to installation place, and polypropylene fibre flat hoisting belts are passed through and hung
Point ring is fixed under girder in advance；Fix after finishing, termination is welded on girder diagonal brace mark, diagonal brace bottom termination at the top of diagonal brace
It is welded on the pre- plate of overhang layer lower floor thrust block.Then weld seam is detected.
5th, secondary beam is installed
Marked according to secondary beam on girder, secondary beam is put, put after finishing, is welded to connect, weld seam is full.It is then right
Weld seam is detected.
6th, steel plate is laid
1.4mm steel plates are purchased, by steel plate paving secondary beam, multiple spot welding is carried out with secondary beam and is connected.
7th, the anti-skidding guide pile of outrigger
In Construction in Preparatory Stage by HRB335（Φ25）Waste steel bar, cuts into 150mm, and as outrigger slide resistant pile, steel plate is installed
Complete, outrigger slide resistant pile is welded on secondary beam, and weld seam is full.Then weld seam is detected.
Outrigger slide resistant pile is installed, and all rubbish on platform are removed and high-altitude long-span overhung steel platform mould bases is entered
Row is checked and accepted.
8th, erection
Acceptance(check), handling outrigger steel pipe to high building carries out erection, and first vertical rod sleeve of outrigger stands in outrigger slide resistant pile
On, prevent outrigger whole slide.
9th, brace is installed
Overhang layer upper strata concrete strength >=15MPa is treated, brace installation is carried out, lower pull bar pulls down bridle ring through girder, on
Pull bar passes through brace built-in fitting, and pull bar tenses to form entirety by 32# flower basket bolts up and down.
Brace is installed, and cleans rubbish, and brace is carried out an acceptance inspection.
Tenth, deformation observation
It is≤20mm according to safety requirements steel platform deformation range, setting up completion when platform system carries out first time deformation observation,
Platform topsides support for shuttering, which is set up, finishes second of observation of progress；In upper floors beam slab concreting process, carry out real-time
Monitoring, platform system load increased afterwards, be observed once, until platform system stabilization.
11, remove
After every section of last layer of support for shuttering has been removed, carry out high-altitude long-span overhung steel platform mould bases and remove, during dismounting, first
Outrigger dismounting is carried out, is removed before scaffold, the remaining material on scaffold, debris etc. should be removed clean.
By from top to bottom, first torn open after dress person, the order that rear dress person first tears open is carried out.The order of dismounting is：Scaffold dismounting →
Brace and oblique pull steel wire rope → level closing steel plate → I-steel secondary beam → are encorbelmented girder and diagonal brace overall pulling down.Wherein：
1st, scaffold is removed
Remove before scaffold, first remove the remaining material on scaffold, debris etc. clean.
By from top to bottom, first torn open after dress person, the order that rear dress person first tears open is carried out.Dismounting order is safety net → railing → pin
Palm → bridging → vertical pole → leger → small cross bar → vertical rod.
Wall-connecting piece is successively removed with scaffold, the component and fitting that scaffold is removed, and steel tube stacking is good, tie, fastener nylon
Packed good, safety net is folded neat and hangs by tower crane one by one or elevator is transported to ground stacking, accomplishes that the complete field of work is clear.
2nd, outrigger platform system is removed
After scaffold dismounting is finished, outrigger platform system is removed.
1）The dismounting of brace and oblique pull steel wire rope
Dismounting during dismounting brace to diclinic pull bar, first cuts off steel plate at brace, unscrews flower basket bolt, remove under brace
Pull bar, closing excision steel plate removes upper connecting rod and flower basket bolt, and brace collection is put into same Rotating fields by brace dismounting after finishing
Plate face, is then fallen to ground with tower crane, by flower basket bolt recycling.
2）Level closes steel plate
Outrigger platform level closing steel plate is removed, the steel plate of dismounting is transported to same Rotating fields plate face and stacked, is transported to same layer discharging and puts down
Ground is hoisted to by tower crane at platform.
3）I-steel secondary beam is removed
The I-steel secondary beam of dismounting is transported to same Rotating fields plate face by root and stacked, and tower crane is passed through at man-handling of materials to same layer discharging platform
It is hoisted to ground.
4）Encorbelment the dismounting of girder and diagonal brace
Encorbelment girder and the girder of encorbelmenting that is not provided with diagonal brace, removed in structure plate face, the I-shaped of dismounting for standard
Steel girder is transported to same Rotating fields plate face by root and stacked, and is transported at same layer discharging platform and is hoisted to ground by tower crane.
Single product truss is removed, and first tower crane steel wire rope is inserted in truss girder suspension ring and hangs truss, anchor ring pressure is then unscrewed
Plate and nut, cut off diagonal brace bottom pad, remove completion and are hoisted to ground classification stacking, encorbelment and use so as to hypomere.
Concrete application example
1st, JiJin Building
The ㎡ of JiJin Building overall floorage 109726.59, total height 208.5m, king-tower building is Frame-Shear wall, high building
1F-3F is Tiao Kong halls space, and 4F and the above are along building height by standard interval（Totally 6 layers）With garden interval (totally 5 layers) respectively
Four/tri- compositions are alternately presented.
Special-shaped long cantilever construction is presented in three sections of hanging garden layers of the engineering, and maximum cantilever span 10m employs high-altitude big
Span overhang steel platform formwork, points three sections were set up, and first paragraph is erected on 9~14 layers of high building, in August in 2014 3 days
Construction, on November 1st, 2014,14 layers of beam slab of high building poured completion.Second segment is erected on 20~25 layers of high building：In December, 2014
Start to set up within 13rd, March 22 day in 2015,25 layers of beam slab poured completion, and the 3rd section is set up 31~36 layers of high building：In April, 2015
Start to set up within 30th, July 27 day in 2015,36 layers of beam slab poured completion.Contrast Bailey bracket platform system and save cost 5.54 ten thousand
Member, the conventional outrigger platform system of contrast saves 7.37 ten thousand yuan；Shorten 10 days durations.
2nd, water shellfish jewelry headquarters building
Water shellfish jewelry headquarters building engineering overall floorage 245663.77m2, by 2 Super Highs, business research and development podium, bus station
And basement（5 layers contain equipment room）Composition.Wherein Building A is 48 layers of complex building, high 232.2m, 35 layers of Building B, high 166.2m.
25~28 layers of part of engineering Building A high building have long cantilever construction, and maximum cantilever span 8m employs high-altitude long-span
Overhang steel platform formwork, for cantilevered structure construction.Contrast Bailey bracket platform system and save 3.80 ten thousand yuan of cost, contrast is conventional outstanding
Choose platform system and save 5.11 ten thousand yuan；Save 6 days durations.
The benefit that the construction of the present invention is brought has：
1st, social benefit
The application of high-altitude long-span overhung steel platform mould bases, successfully solves the complicated hanging garden layer of this engineering structure special-shaped big
The construction difficult problem of span suspended structure at high altitude, makes the research of technique level of enterprise reach a new level again, improves corporate image and knows
Name degree, has obtained the height favorable comment of various circles of society, has won good social prestige.
2nd, environmental protection, energy-saving benefit
By factory process list product truss, reduction Site Welding is immature, causes energy waste；Paint spraying is protected in workshop, is subtracted
Few pollution to air, protects ecological environment；Using can turnover type material, reduce material consumption and Energy Consumption of Construction, meet
National energy-saving emission reduction policy requirements.
3rd, economic benefit
This engineering method and other traditional mould bases（Bailey bracket platform, conventional outrigger platform）Construction method is compared, and installation process is used
Mechanical engagement is lifted, and reduces the danger of personnel's construction operation in built on stilts system, simple and efficient to handle, while accelerating construction
Progress, shortens the duration, saves construction cost.
In the process of construction of above-mentioned JiJin Building, total economic efficiency contrast table such as following table：
Table one：JiJin Building Economic and Efficiency Analysis table
5.54 ten thousand yuan of cost, the conventional outrigger platform of contrast are saved using high-altitude overhanging steel platform system contrast Bailey bracket platform system
System saves 7.37 ten thousand yuan, shortens 10 days durations.
It should be appreciated that for those of ordinary skills, can according to the above description be improved or converted,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Exemplary description is carried out to patent of the present invention above, it is clear that the realization of patent of the present invention is not by aforesaid way
Limitation, as long as employ patent of the present invention method design and technical scheme carry out various improvement, or it is not improved will this
The design of patent of invention and technical scheme directly apply to other occasions, within the scope of the present invention.
Claims (10)
1. a kind of high-altitude long-span overhung steel platform mould bases construction, it is characterised in that comprise the following steps：
Step 1, progress preparation of construction：The supply producer of each material is selected, construction equipment, apparatus, organizing construction's technology is got out
Workman is confided a technological secret；
Step 2, the construction for carrying out built-in fitting：Construction including thrust block built-in fitting, girder positioning anchor ring construction and tiltedly
The construction of pull bar built-in fitting；
Step 3, installation girder：Anchor ring pressing plate and nut rotation are put on anchoring filament, girder is hung to installation site by tower crane, and screws spiral shell
Cap；
Step 4, the single product truss in installation big angle：Truss is hung to installation site by tower crane, truss is aligned into the pre-buried place of placement anchor ring, really
After Dingan County is trued up really, anchor ring pressing plate and nut are screwed, lower floor's hound of encorbelmenting is welded with thrust block built-in fitting, and to nut
Dynamics inspection is tightened in progress, and weld seam is detected；
Step 5, installation diagonal brace：Suspension centre ring is welded in termination at the top of diagonal brace, and tower crane is hung to installation place, by the flat lifting of polypropylene fibre
Band is fixed under girder in advance through suspension centre ring, and termination is welded on girder diagonal brace mark, the weldering of diagonal brace bottom termination at the top of diagonal brace
It is connected on the pre- plate of overhang layer lower floor thrust block；
Step 6, installation secondary beam：Secondary beam is placed at the secondary beam mark point on girder, and secondary beam is welded with girder；
Step 7, laying steel plate, by steel plate paving secondary beam, carry out multiple spot welding with secondary beam and are connected；
Step 8, the anti-skidding guide pile of outrigger is welded on secondary beam；
Step 9, set up outrigger：Handling outrigger steel pipe carries out erection, wherein first vertical rod sleeve of outrigger stands in outer to high building
On frame slide resistant pile；
Step 10, installation brace：Brace is connected to the pull bar suspension ring and brace built-in fitting of girder respectively；
Step 11, dismounting, after every section of last layer of support for shuttering has been removed, carry out high-altitude long-span overhung steel platform mould bases and tear open
Remove.
2. high-altitude long-span overhung steel platform mould bases construction according to claim 1, it is characterised in that also including becoming
The step of shape is observed：Platform system sets up completion and carries out first time deformation observation；Platform topsides support for shuttering, which is set up, finishes carry out
Secondary observation；In upper floors beam slab concreting process, monitored in real time；Platform system load increased, and enter
Row is observed once, until platform system stabilization.
3. high-altitude long-span overhung steel platform mould bases construction according to claim 1, it is characterised in that in the step
In the construction of rapid 2 thrust block built-in fitting, line setting is intervened after the completion of the main beam steel bar colligation of overhang layer lower floor, and will be pre-
Bury and be a little welded on girder gluten.
4. high-altitude long-span overhung steel platform mould bases construction according to claim 1, it is characterised in that in the step
In the construction of rapid 2 girder positioning anchor ring, line setting is intervened after the completion of laminate bottom muscle colligation of encorbelmenting, and will be with pvc pipes
Girder positioning anchor ring be placed in correspondence position, girder is positioned into anchor ring and plate muscle colligation.
5. high-altitude long-span overhung steel platform mould bases construction according to claim 1, it is characterised in that in the step
In the construction of rapid 2 brace built-in fitting, line setting is intervened after the completion of the main beam steel bar colligation in overhang layer upper strata, and will be carried
The screw rod embedded part of pvc pipes is placed in correspondence position, and embedded part and beam waist muscle are carried out into colligation.
6. high-altitude long-span overhung steel platform mould bases construction according to claim 1, it is characterised in that the step
The single product truss in big angle in 3 includes truss girder and batter brace, and web member is provided between the truss girder and batter brace.
7. high-altitude long-span overhung steel platform mould bases construction according to claim 6, it is characterised in that the web member
Including two perpendicular web members and a diagonal web member, the two ends of the diagonal web member are separately fixed at the root of two perpendicular web members.
8. high-altitude long-span overhung steel platform mould bases construction according to claim 1, it is characterised in that the step
In 9, the brace includes upper connecting rod and lower pull bar, is connected between the upper connecting rod and the lower pull bar by flower basket bolt.
9. high-altitude long-span overhung steel platform mould bases construction according to claim 8, it is characterised in that the pull-up
Bar and the lower pull bar are round steel.
10. high-altitude long-span overhung steel platform mould bases construction according to claim 1, it is characterised in that the step
In rapid 11, the order of dismounting is：Scaffold → dismounting brace and oblique pull steel wire rope → dismounting level closes steel plate → is removed to tear open
Except encorbelment girder and diagonal brace of I-steel secondary beam → dismounting is overall.
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| CN111456400A (en) * | 2020-03-24 | 2020-07-28 | 中国五冶集团有限公司 | Interim operation platform structure in high altitude |
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Application publication date: 20170915 |