CN105888227B - Superelevation is tubaeform steel structure exterior finish operation platform and its building method - Google Patents
Superelevation is tubaeform steel structure exterior finish operation platform and its building method Download PDFInfo
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- CN105888227B CN105888227B CN201610425798.3A CN201610425798A CN105888227B CN 105888227 B CN105888227 B CN 105888227B CN 201610425798 A CN201610425798 A CN 201610425798A CN 105888227 B CN105888227 B CN 105888227B
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- 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
-
- 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
- E04G5/001—Safety or protective measures against falling down relating to scaffoldings
-
- 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
- E04G5/08—Scaffold boards or planks
-
- 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
- E04G5/14—Railings
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The present invention discloses a kind of tubaeform steel structure exterior finish operation platform of superelevation, builds and use equalizer bar and its building method, and described operation platform includes being located at the horizontally disposed construction panel being connected with the tubaeform steel structure of superelevation below portion of encorbelmenting；Drag-line is connected between construction panel and portion of encorbelmenting；The protection network being connected with the portion of encorbelmenting is provided with construction face plate edge；Described equalizer bar includes counter-jib and the counterweight positioned at counter-jib outer end, and two lifting rope hangers are provided with counter-jib；Described building method includes being fabricated into from girder each step of protection network installation.Operation platform of the present invention is easy to use, has saved substantial amounts of steel, and work high above the ground quick and safe, material can be reused, and reduce cost.Equalizer bar disclosed by the invention, it is easy to use, directly girder is bundled thereon when lifting, use safe.Building method flow of the present invention is compact, and manufacturing speed is fast, and the operation platform produced is safe.
Description
Technical field
The invention belongs to the tubaeform steel structure construction field of superelevation, and in particular to a kind of tubaeform steel structure exterior trim surface construction of superelevation
Platform, build with equalizer bar and its building method.
Background technology
Tower class is built, especially the tower class building of superelevation, such as multi-functional launching tower, the basic above section of its positive negative zero
It is steel construction, total Gao Jun is more than 150 meters；The curtain walls such as steel construction exterior facing multiselect glass, aluminium sheet.
For this kind of its outer decoration construction of building, hanging basket can be selected for tower body position；But, it is upper big for top
Under small flared structure, encorbelment the horizontal range for almost 10m for its horn mouth upper end, even greater than 10m, this position it is outer
Decoration surface construction, must set up operating platform.The operation platform is encorbelmented from tower body steel structure using steel member and formed.
Encorbelment operation platform and decoration construction belongs to superelevation idle job, wind load is positioned to Steel Structure Installation and safety is applied
Work influence is larger, and operative's degree-of-difficulty factor is big, dangerous high.Meanwhile, overlength is encorbelmented steel member deflection value and span into 4 of encorbelmenting
Power relation, operation platform itself load and wind load are high to platform system rigidity requirement.
Have following two for the construction method of operation platform of encorbelmenting at present：
1st, successively encorbelmented using steel pipe scaffold, be finally reached cantilever span, the problem that this method is present is：Steel make
Consumption is big, and operation platform itself lotus is larger, and stability is poor；And set up that the cycle is long, the security risk that superaltitude is installed is than larger.
2nd, encorbelmented using individual layer I-shaped steel truss, top sets steel wire rope off-load, steel pipe is replaced by channel-section steel by this method
The girder truss constituted with I-steel, can preferably solve the problems, such as suspension scaffold stiffness by itself, but it still has problems with：Apply
Work load is big, and small bore truss is difficult to meet rigidity requirement；And 7 meters of truss cantilever span ＞, tower body steel structure stress is big, safety
Property is still relatively low.
The content of the invention
The present invention is intended to provide a kind of construction is quick, the tubaeform steel structure exterior finish operation platform of superelevation using safety, take
Build with equalizer bar and its building method.
In order to solve the above technical problems, the invention provides following technical scheme：Superelevation is tubaeform, and steel structure exterior finish is applied
Work platform, superelevation is tubaeform, and steel structure cross section is circle, and top is provided with the portion of encorbelmenting, including construction panel, drag-line and protection network；
Construction panel includes at least two girders and the secondary beam being connected between two adjacent girders, and girder is truss, secondary
Beam is H profile steel；
Construction panel is located at portion lower section of encorbelmenting, and construction panel-level is circumferential with the tubaeform steel of superelevation around the tubaeform steel structure of superelevation
Structure is connected and sets；
Drag-line is connected between construction panel and portion of encorbelmenting；
Protection network is arranged at construction face plate edge, and is connected with the portion of encorbelmenting.
The upper and lower chord member and web member of girder are seamless steel pipe, and girder is along circle where the tubaeform steel structure cross section of superelevation
Radial direction is set；
Full penetration butt welding is connected to connecting plate on girder, and secondary beam is connected with connecting plate by high-strength bolt；Girder and secondary beam
Top completely spreads pine springboard, is fixed by high-strength bolt between pine springboard and secondary beam, and the thickness of pine springboard is 30 ~ 50mm.
Protection network includes the safety barrier, close mesh safety net, safety net and the steel wire that set gradually from inside to outside, peace
Full guardrail is fixedly arranged on construction panel, and the height of safety barrier is 1300 ~ 1700mm；Close mesh safety net and safety net are fixed
In on steel wire；Channel-section steel of encorbelmenting is provided with the top of the portion of encorbelmenting, channel-section steel level of encorbelmenting and correspondingly girder setting, steel wire one end
Channel-section steel is connected with encorbelmenting, and the other end is connected with girder.
Steel wire includes vertically arranged vertical steel wire rope and horizontally disposed horizontal wire rope, vertical steel wire rope and level
Connected by iron wire between steel wire rope；The distance between adjacent vertical steel wire rope is less than 2000mm, between adjacent level steel wire rope
Distance be less than 1500mm.
The installing plate for taking the shape of the letter U is provided with the inner end of girder；
Anchor ear is provided with superelevation is tubaeform steel structure, anchor ear inwall and the tubaeform steel structure joint place of superelevation are provided with rubber lining
Pad；
Otic placode is welded with anchor ear, otic placode is connected with installing plate by high strength bolt.
Drag-line is distributed in each girder and portion of encorbelmenting between, and drag-line includes the inhaul and outer drag-line that are parallel to each other, outer drawing
The distance between rope and girder outer end are 800 ~ 1200mm；The distance of inhaul and girder outer end for girder overall length 1/5 ~
3/5。
Drag-line lower end is set around on girder, and is fixed by rope cramp, and drag-line is provided with rubber material with girder contact position
The liner of matter；Encorbelmenting drag-line of coordinate in portion is provided with suspension ring, and drag-line upper end is connected with suspension ring.
Suspension ring include U-shaped boatswain chair, and boatswain chair is coiled into by HPB300 reinforcing bars, and the U-shaped mouth of boatswain chair is upward；In two side walls of boatswain chair
Between be arranged with two clamping plates in parallel, clamping plate is galvanized steel plain sheet, two clamping plates respectively with the tubaeform steel structure of superelevation on steel plate
Upper and lower surface is fitted, and drag-line is set around in the U-shaped mouth of boatswain chair.
Superelevation is tubaeform, and steel structure exterior finish operation platform builds uses equalizer bar, including counter-jib and positioned at counter-jib outer end
Counterweight, counter-jib material is seamless steel pipe, and model Ф 168*6, the length of counter-jib is 2000 ~ 3000mm；In counter-jib
On be provided with two lifting rope hangers, one of lifting rope hangers closes on the setting of counter-jib outer end；Another lifting rope hangers distance
The distance of counter-jib outer end is 800 ~ 1000mm.
The building method of superelevation is tubaeform steel structure exterior finish operation platform, comprises the following steps：
A, making girder：
The top-bottom chord of truss is made first by Ф 168*6 seamless steel pipes, purlin is made using the seamless steel pipes of Ф 102 × 5
The web member of frame, the truss produced is used as girder, girder overall length≤10 meter；
The quantity of girder determines according to the diameter of the tubaeform steel structure cross section of superelevation, it is ensured that when installing, each
Girder is set along the radial direction of circle where the tubaeform steel structure cross section of superelevation, just tubaeform around superelevation after all erection of main beam
Steel structure one week；Then, the installing plate of U-shaped is connected on the end of girder；
B, anchor ear is produced according to the diameter of the steel column on the tubaeform steel structure of superelevation：
Steel column is provided with superelevation is tubaeform steel structure, to ensure that steel column can be enclosed within it by anchor ear when anchor ear is made
In；
The quantity of anchor ear and the quantity of girder are equal；
Otic placode is welded in the extrados center of anchor ear, and by the steel column on anchor ear and the tubaeform steel structure of superelevation by high-strength
Bolt is fixed；
C, making drag-line and suspension ring：
Outer drag-line is set with 800 ~ 1000mm of girder outer end distance on the girder, apart from girder outer end on girder
To set inhaul at the 1/5 ~ 3/5 of girder overall length；
D, making equalizer bar, counter-jib is made using Ф 168*6 seamless steel pipes, is set on the outer end of counter-jib and matched somebody with somebody
Weight, and lifting rope hangers is set on counter-jib；
E, installation girder：
First, lifting rope is installed：Equalizer bar is bundled with girder, is hung on two lifting rope hangers of equalizer bar
Upper lifting rope；Because counter-jib and girder are bundled, and lift position determination of the hangers on equalizer bar, in binding
Need to ensure when equalizer bar and girder, two lifting ropes are located on the outer end of girder and apart from girder outer end respectively
At 800mm ~ 1000mm；Meanwhile, assisted suspension cable is lifted on equalizer bar, the length of assisted suspension cable is lift rope lengths 1.5
Times, the suspension centre of assisted suspension cable is in counterweight；Lifting rope and auxiliary lifting rope are connected on boom hoisting；
Then, boom hoisting is opened；Under boom hoisting effect so that girder reaches setting position, in girder outer end
Outer drag-line is installed, inhaul is installed on the inside of outer drag-line, wherein inhaul and the distance of girder outer end is the 1/5 of girder overall length
~3/5；Inhaul is adjusted to tensioning state, outer drag-line is adjusted to relaxed state；
Then, the otic placode on the installing plate and anchor ear on girder is fixed by high strength bolt；
Finally, equalizer bar and girder are removed, then outer drag-line is also adjusted to tensioning state；Equalizer bar is filled by lifting
Put and be hung to ground, carry out the installation of next girder；
F, often one girder of installation just install a secondary beam：
First, the full penetration butt welding connecting plate on girder；
Then, H profile steel is lifted to girder using boom hoisting, uses two high-strength bolts to cause on each connecting plate
Connecting plate and H profile steel link together, to realize the installation of secondary beam；
Pine springboard is completely spread on g, construction panel：
First, by thickness for the pine springboard of 30 ~ 50mm is completely layered on girder and secondary beam, it is ensured that two pieces of companies of pine springboard
Connect and be in H profile steel；
Then, H profile steel and pine springboard are coupled together using bolt；
H, installation protection network：
First, channel-section steel of encorbelmenting is installed in the portion of encorbelmenting, it is ensured that there are a channel-section steel of encorbelmenting, channel-section steel of encorbelmenting in each girder top
Length≤4 meter；
Then, in encorbelmenting vertical steel wire rope of connected between channel-section steel and girder, distance is less than between adjacent vertical steel wire rope
2000mm；Again the distance between horizontal wire rope, adjacent horizontal wire rope is horizontally disposed with vertical steel wire rope to be less than
1500mm；The place that horizontal wire rope and vertical steel wire rope connect is connected by iron wire, in vertical steel wire rope and horizontal wire rope
In the presence of form steel wire；
Finally, safety barrier, close mesh safety net and safety net, close mesh peace are set gradually from inside to outside on the inside of steel wire
The whole network and safety net are fixed on steel wire, and safety barrier is fixed on girder edge, and safety barrier height for 1.3 ~
1.7mm。
By above technical scheme, beneficial effects of the present invention are：
1. the construction that construction panel, drag-line and the protection network for setting have caused the tubaeform steel structure of superelevation formed below and closed is put down
Platform；And construction panel, drag-line and protection network can be manufactured separately, construct so as to improve speed of application；Drag-line is to super simultaneously
The load of tubaeform steel structure high is disperseed, it is ensured that the safety during use；
2. secondary beam selects H profile steel, and girder selects truss, and both are combined and have saved substantial amounts of steel；
3. protection network includes safety barrier, close mesh safety net and safety net, and the close mesh safety net and safety of setting are flat
Net employs the double-deck mode gone along with sb. to guard him, and improves the security in work progress；
4. vertical steel wire rope and horizontal wire rope form the skeleton of protection network, and stability is high, use comparing safety；
5. girder and the tubaeform steel structure of superelevation are connected by installing plate and anchor ear, install rapid, so as to improve construction
Speed；
6. drag-line includes outer drag-line and inhaul, so that the abundant load to reducing construction panel；
7. drag-line one end is connected with girder by rope cramp, and the other end is connected by suspension ring and portion of encorbelmenting, so as to improve
The installation rate of drag-line；
8. suspension ring include U-shaped boatswain chair and two clamping plates fixed with boatswain chair, by the upper and lower of two clamping plates and steel plate
Surface is fitted, so that suspension ring are fully contacted with the tubaeform steel structure of superelevation, reduces single-point stress, improves security；
9. the equalizer bar for setting includes lifting rope hangers and counterweight, it is ensured that the safety during main cable and girder；
10. the building method of operation platform, flow is compact, and the production order and erection sequence of all parts rationally, can be with
Speed of application is improved, while lifting construction effect, it is ensured that the operation platform safety durable for building.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is Fig. 1 top views；
Fig. 3 is main beam structure schematic diagram；
Fig. 4 is A portions enlarged drawing in Fig. 3；
Fig. 5 is Fig. 4 top views；
Fig. 6 is B portions enlarged drawing in Fig. 3；
Fig. 7 is Fig. 6 left views；
Fig. 8 is hoist cable structural representation；
Fig. 9 is secondary beam and pine springboard attachment structure schematic diagram；
Figure 10 is protecting screen structure schematic diagram；
Figure 11 is balance beam structure schematic diagram；
Figure 12 is building method flow chart of the present invention.
Specific embodiment
Superelevation is tubaeform, and steel structure is existing building, and its circular in cross-section is provided with steel column 11 in its edge, its building
Plate includes steel plate 17, while being provided with the portion of encorbelmenting 2 on its top.
As shown in Figure 1, Figure 2, the tubaeform steel structure exterior finish of superelevation shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9 and Figure 10
Operation platform, including the construction panel 3 being connected with the tubaeform steel structure 1 of superelevation, construction panel 3 are horizontally disposed with；While panel 3 of constructing
Positioned at the lower section of the portion of encorbelmenting 2, constructed for the ease of the exterior finish to the tubaeform steel structure of whole superelevation, construction panel 3 is around superelevation
Tubaeform steel structure is circumferentially disposed.When in use, scaffold is positioned on construction panel 3 and is constructed.
Construction panel 3 includes at least two girders, and each girder is along radius round where the tubaeform steel structure cross section of superelevation
Direction is set, and the length≤10000mm of girder is excessive so as to solve the girder tubaeform steel structure load of the long superelevation for causing
Problem.The quantity of girder is determined with diameter of a circle where the tubaeform steel structure cross section of superelevation, just around super after all erection of main beam
Tubaeform steel structure high 1 one weeks, the quantity of the present embodiment middle girder is 16.
Girder is truss, and top boom 311 and lower boom are the seamless steel pipe of Ф 168 × 6；Web member is seamless for Ф's 102 × 5
Steel pipe.
It is provided with the installing plate 10 of U-shaped on the inner end of girder, installing plate 10 and girder are connected by full penetration pair
Connect the mode of welding.In order to realize the fixation of construction panel 3 and the tubaeform steel structure of superelevation, in the steel column 11 of the tubaeform steel structure of superelevation
Upper cooperation installing plate 10 is provided with anchor ear 8, and anchor ear 8 is fixed by high-strength bolt 13 and steel column 11；In anchor ear 8 and the patch of steel column 11
Rubber packing 101 is provided with conjunction, the rubber packing 101 of setting can increase the frictional force between anchor ear 8 and steel column 11, so that
Increase the bearing capacity of anchor ear 8.Otic placode 9 is welded with the center of the extrados of anchor ear 8, the installation of U-shaped is stretched into the end of otic placode 9
In plate 10；Meanwhile, otic placode 9 and installing plate 10 are connected by high strength bolt 12, by the connected of otic placode 9 and installing plate 10
Realize being connected for girder and the tubaeform steel structure of superelevation, and then realize being connected for construction panel and the tubaeform steel structure of superelevation.Wherein, hold
Die mould high-strength bolt and high-strength bolt are commercially available prod, and height therein is not the restriction to degree, but high-strength with pressure-bearing type
Collectively show that the type of bolt.
Its China and foreign countries, interior definition mode are：Near superelevation tubaeform steel structure be it is interior, away from for outer.
Secondary beam 32 is connected between two neighboring girder, secondary beam 32 is H profile steel, while secondary beam 32 is along the tubaeform steel of superelevation
The concentric circles tangential direction of circle is set where structure, so as to realize the dispersion of power, reduces this operation platform to the tubaeform steel structure of superelevation
Load.
In order to realize the connection of girder and secondary beam 32, connecting plate 14, the He of connecting plate 14 are provided with the top boom 311 of girder
The connected mode of top boom 311 is full penetration butt welding；Secondary beam 32 is connected with connecting plate 14 by high-strength bolt 13, so that convenient
Both are in aerial connection high.Completely spread pine springboard 20 in girder and the top of secondary beam 32, the thickness of pine springboard 20 for 30 ~
50mm, preferably 40mm, by the springboard from pine material, firm and durable, long service life.Pine springboard 20 and secondary beam 32 are logical
Cross high-strength bolt 13 to fix, while ensureing that two joints of pine springboard 32 are located on secondary beam 32, and then ensure that this construction is put down
Safety during platform use.
It is safe in order to further improve using for this operation platform, it is provided with drawing between construction panel 3 and portion 2 of encorbelmenting
Rope, drag-line includes the inhaul 41 and outer drag-line 42 that be arranged in parallel.The distance between outer drag-line 42 and girder outer end for 800 ~
1200mm；Inhaul 41 is 1/5 ~ 3/5, preferably the 2/5 of girder overall length with the distance of girder outer end.The wherein He of inhaul 41
Outer drag-line 42 includes two steel wire ropes 43 respectively, here by inhaul and outer drag-line is set, while to inhaul and outer drag-line
Position designed, can greatly improve construction panel 3 safety so that construction panel 3 to the tubaeform steel structure of superelevation
Load disperseed.
In order to ensure the installation stabilization of drag-line, the connected mode for constituting the steel wire rope 43 of drag-line is：
The lower end of steel wire rope 43 is set around on top boom 311, and is fixed by rope cramp 19；Meanwhile, in steel wire rope 43
With the liner 18 that the joint place of top boom 311 is provided with quality of rubber materials so as to the abrasion of steel wire rope 43 during reducing use；
Rope cramp 19 is commercially available prod, for proof strength during use, the rope cramp used on each steel wire rope
19 quantity is 3.
The upper end of steel wire rope 43 is connected by suspension ring with steel plate 17, and suspension ring include boatswain chair 15 and the upper and lower surface with steel plate 17
The clamping plate 16 fitted, two clamping plates 16 are connected with U-shaped boatswain chair 15, and boatswain chair 15 is formed by the bending of HPB300 reinforcing bars, is installed
When boatswain chair 15 U-shaped mouth upward, steel wire rope 43 be set around the clamping plate 16 fitted with the lower surface of steel plate 17 and boatswain chair 15 it
Between.
Pulling force of the construction panel 3 to the tubaeform steel structure of superelevation is reduced by drag-line, it is ensured that construction panel uses process
In safety.
For the safety being further ensured that during the construction use of panel 3, the edge of construction panel 3 is provided with protection
Net, protection network is used to prevent object or people from being fallen down from the edge of construction panel 3.The top of protection network and the portion of encorbelmenting
2 are connected, and bottom is connected with construction panel 3.
Protection network includes the safety barrier, close mesh safety net, safety net and the steel wire that set gradually from inside to outside, peace
Full guardrail is connected with construction panel 3, and the height of safety barrier is 1300 ~ 1600mm, preferably 15mm.Steel wire is used as protection network
Support, including vertically arranged vertical steel wire rope 61 and horizontally disposed horizontal wire rope 62, vertical steel wire rope 61 and level
The joint of steel wire rope 62 is connected by iron wire, and iron wire shows not in figure.The distance between adjacent vertical steel wire rope 61 is small
In 2000mm, the distance between adjacent level steel wire rope 62 is less than 1500mm, so as to ensure the safety of user.
In order to ensure the fixation of steel wire, the channel-section steel 7 of encorbelmenting of hot rolling, channel-section steel 7 of encorbelmenting are fixed at the top in the portion of encorbelmenting 2
Set for girder, it is ensured that there is a horizontally disposed channel-section steel 7 of encorbelmenting each girder top, channel-section steel 7 of encorbelmenting is used to fix steel
The top of silk screen, bottom and the girder of steel wire are fixed.
After the completion of steel wire is built, then close mesh safety net and safety net are fixed on steel wire, close mesh peace
The whole network and safety net are commercially available prod.
Operation platform of the present invention is easy to use, by the mode that truss and H profile steel are combined, has saved substantial amounts of
Steel, while this operation platform is built conveniently, the connection with the tubaeform steel structure of superelevation by the way of anchor ear pin joint, make by high-altitude
Industry quick and safe, material can be reused, and reduce cost.
The invention also discloses a kind of equalizer bar for building the tubaeform steel structure exterior finish operation platform of above-mentioned superelevation, such as Figure 11
It is described, including counter-jib 23, the material of counter-jib 23 is seamless steel pipe, model Ф 168*6；The length of counter-jib 23 is 2000
~ 3000mm, preferably 2900mm, so as to fully meet the lifting to girder.
It is provided with counterweight 22 on the outer end of counter-jib 23, the weight of counterweight 22 and the length of counter-jib and girder
Weight is relevant, after ensure that girder and counter-jib 23 are fixed, the level of counter-jib can be kept under counterweight effect.
Lift for convenience, be provided with two lifting rope hangers 21 on counter-jib 23, two lifting rope hangers one close on flat
The outer end of weighing apparatus arm 23 is set；Distance of another lifting rope hangers 21 apart from the outer end of counter-jib 23 is 800 ~ 1000mm.
Equalizer bar disclosed by the invention, it is easy to use, directly girder is bundled thereon when lifting, use
It is safe.
It is the invention also discloses a kind of building method of the above-mentioned tubaeform steel structure exterior finish operation platform of superelevation including as follows
Step：
A, making girder：
First, the top-bottom chord of truss is made using Ф 168*6 seamless steel pipes, purlin is made using the seamless steel pipes of Ф 102 × 5
The web member of frame, the truss produced is used as girder, girder overall length≤10 meter；The number of girder is according to the tubaeform steel structure of superelevation herein
The diameter of cross section determines, it is ensured that when installing, and each girder is along half of circle where the tubaeform cross section of steel structure 1 of superelevation
Footpath direction is set, just around the tubaeform steel structure of superelevation one week after all erection of main beam；
Then, the installing plate 10 of U-shaped is connected on the end of girder, for being connected with the tubaeform steel structure 1 of superelevation.
B, anchor ear is produced according to the diameter of the steel column on the tubaeform steel structure of superelevation：
The diameter of anchor ear 8 is determined by steel column 11, it is ensured that anchor ear 8 can be by 11 sets of steel column wherein.The quantity of anchor ear 8 and
The quantity of girder is equal, so as to ensure that each girder is fixed when connection by anchor ear and the tubaeform steel structure 1 of superelevation.
The extrados center welding otic placode 9 of anchor ear 8, and the steel column 11 on anchor ear 8 and the tubaeform steel structure 1 of superelevation is passed through into high-strength bolt
13 fix.
C, making drag-line and suspension ring：
Outer drag-line 42 is set with 800 ~ 1000mm of girder outer end distance on the girder；Apart from girder outer end on girder
Portion is that inhaul 41 is set at the 1/5 ~ 3/5 of girder overall length.Wherein inhaul 41 and outer drag-line 42 are with the connected mode of girder
The steel wire rope 43 for constituting inhaul 41 and outer drag-line 42 is wound on girder, the upper end of steel wire rope 43 is fixed by rope cramp 19
.
D, making equalizer bar：
Counter-jib 23 is made using Ф 168*6 seamless steel pipes, counterweight 22 is set on the outer end of counter-jib 23, in balance
Two lifting rope hangers 21 are set on arm, the making of equalizer bar is completed, one of lifting rope hangers 21 closes on the outer end of counter-jib 23
Set；Distance of another lifting rope hangers 21 apart from the outer end of counter-jib 23 is 800 ~ 1000mm.
E, installation girder：
First, lifting rope is installed：Counter-jib 23 and girder are bundled, in two lifting rope hangers of counter-jib 23
Lifting rope is hung up on 21；Need to ensure when counter-jib 23 and girder is bundled, two lifting ropes are located at girder respectively
Outer end on and girder at girder outer end 800mm ~ 1000mm.Meanwhile, in order to improve security, in equalizer bar 21
Upper lifting assisted suspension cable, the length of assisted suspension cable is lift rope lengths 1.5 times, the suspension centre of assisted suspension cable in counterweight 22,
So as to fully ensure that the safety during use.
Then, by lifting rope and boom hoisting connection, boom hoisting is opened so that boom hoisting drives the He of counter-jib 23
Girder reaches setting position；The outer drag-line 42 and the inhaul on the inside of outer drag-line for closing on girder outer end are installed on girder
41, the distance between inhaul and girder outer end are 800mm ~ 1000mm；Inhaul 41 is adjusted to tensioning state, outer drag-line
42 are adjusted to relaxed state, and inhaul 41 carries out load-bearing, improves the safety in girder and the tubaeform steel structure installation process of superelevation.
Then, the otic placode 9 on the installing plate 10 and anchor ear 8 on girder is fixed by high strength bolt 12.
Finally, equalizer bar and girder are removed, outer drag-line is adjusted to tensioning state；Equalizer bar is hung by hanging apparatus
To ground；
When erection of main beam is carried out, inhaul is adjusted to tensioning state first, and girder and the tubaeform steel structure of superelevation are solid
After setting, then outer drag-line is adjusted to tensioning state, so as to facilitate the safety of girder；Herein, again will be outer after erection of main beam is good
Drag-line is adjusted to tensioning state, it is ensured that the abundant stress of outer drag-line.
When erection of main beam is carried out, installed successively by clockwise order.
The installation of f, secondary beam：
First, the full penetration butt welding connecting plate 14 on girder.
Then, H profile steel is lifted to girder, two high-strength bolts 13 is used on a connecting plate 14 by connecting plate 14
Linked together with H profile steel, realize the installation of secondary beam.
G, repeat step e and step f；
When installing, often install that what a girder carries out an installation for secondary beam, until girder is tubaeform around superelevation
Steel structure one week.
H, laying pine springboard：
It is 30 ~ 50mm by thickness, the pine springboard 20 of preferably 40mm is completely layered in H profile steel the gap with adjacent H profile steel
On, it is ensured that two pieces of junctions of pine springboard 20 are in H profile steel；H profile steel and pine springboard are connected using high-strength bolt 13 then
Pick up and.So that plane is formed at H profile steel top, it is directly that scaffold is placed thereon when use.
I, installation protection network：
First, encorbelment channel-section steel 7, the length≤4000mm of channel-section steel 7 of encorbelmenting, it is ensured that on each girder are installed in the portion of encorbelmenting 2
Side is to that should have a channel-section steel 7 of encorbelmenting；
Then, vertical steel wire rope 61 is connected between channel-section steel 7 and girder encorbelmenting, it is ensured that two adjacent vertical steel wire ropes 61
Between distance be less than 2000mm；Be horizontally disposed with horizontal wire rope 62 on vertical steel wire rope 61 again, adjacent level steel wire rope 62 it
Between distance be less than 1500mm；The place that horizontal wire rope 62 and vertical steel wire rope 61 connect is connected by iron wire, by vertical
Steel wire rope and horizontal wire rope form steel wire；
Finally, safety barrier 5, close mesh safety net and safety net are set gradually from inside to outside on the inside of steel wire, wherein
Safety barrier 5 is fixedly arranged on construction panel, and the height of safety barrier is 1300 ~ 1700mm, preferably 1500mm, close mesh safety
Net and safety net are fixedly arranged on steel wire, and close mesh safety net and safety net are commercially available prod.Using close mesh safety net
Realized with the double-deck maintenance mode of safety net completely enclosed, it is ensured that the safety during operation platform use.
Building method flow of the present invention is compact, reasonable in design, wherein material there is the production order of priority,
The waste of material is avoided, manufacturing speed is fast, and the operation platform produced is safe.
Claims (9)
1. the tubaeform steel structure exterior finish operation platform of superelevation, superelevation is tubaeform, and steel structure cross section is circle, and top is provided with encorbelments
Portion, it is characterised in that：The protection network that operation platform includes construction panel, drag-line and is arranged at construction face plate edge；
Construction panel includes at least two girders and the secondary beam being connected between two adjacent girders, and girder is truss, and secondary beam is H
Shaped steel；
Construction panel is located at portion lower section of encorbelmenting, and construction panel-level is circumferentially consolidated around the tubaeform steel structure of superelevation with the tubaeform steel structure of superelevation
It is connected with and puts；
Drag-line is connected between construction panel and portion of encorbelmenting；
Protection network one end is connected with construction panel, and the other end is connected with the portion of encorbelmenting.
2. the tubaeform steel structure exterior finish operation platform of superelevation as claimed in claim 1, it is characterised in that：
The upper and lower chord member and web member of girder are seamless steel pipe, and girder is along radius round where the tubaeform steel structure cross section of superelevation
Direction is set；
Secondary beam full penetration is coordinated to be connected by high-strength bolt with connecting plate to being welded with connecting plate, secondary beam on girder；
Girder and secondary beam top completely spread pine springboard, are fixed by high-strength bolt between pine springboard and secondary beam, pine springboard
Thickness is 30 ~ 50mm.
3. the tubaeform steel structure exterior finish operation platform of superelevation as claimed in claim 2, it is characterised in that：Protection network is included in
Safety barrier, close mesh safety net, safety net and the steel wire for outwards setting gradually, safety barrier are fixedly arranged on construction panel
On, and the height of safety barrier is 1300 ~ 1700mm；Close mesh safety net and safety net are fixedly arranged on steel wire；In the portion of encorbelmenting
Top be provided with channel-section steel of encorbelmenting, channel-section steel level of encorbelmenting and correspondence girder set, steel wire one end with encorbelment channel-section steel be connected, it is another
End is connected with girder.
4. the tubaeform steel structure exterior finish operation platform of superelevation as claimed in claim 3, it is characterised in that：Steel wire includes vertical
The vertical steel wire rope and horizontally disposed horizontal wire rope for setting, are connected between vertical steel wire rope and horizontal wire rope by iron wire
Connect；The distance between adjacent vertical steel wire rope is less than the distance between 2000mm, adjacent level steel wire rope and is less than 1500mm.
5. the tubaeform steel structure exterior finish operation platform of superelevation as described in Claims 1-4 any one, it is characterised in that：It is main
The installing plate for taking the shape of the letter U is provided with the inner end of beam；
Anchor ear is provided with superelevation is tubaeform steel structure, anchor ear inwall and the tubaeform steel structure joint place of superelevation are provided with rubber packing；
Otic placode is welded with anchor ear, otic placode is connected with installing plate by high strength bolt.
6. the tubaeform steel structure exterior finish operation platform of superelevation as claimed in claim 5, it is characterised in that：Drag-line is distributed in each
Between girder and portion of encorbelmenting, drag-line includes the inhaul and outer drag-line that are parallel to each other, between outer drag-line and girder outer end away from
From being 800 ~ 1200mm；Inhaul is the 1/5 ~ 3/5 of girder overall length with the distance of girder outer end.
7. the tubaeform steel structure exterior finish operation platform of superelevation as claimed in claim 6, it is characterised in that：Drag-line lower end is set around
On girder, and fixed by rope cramp, drag-line is provided with the liner of quality of rubber materials with girder contact position；Encorbelment to coordinate in portion and draw
Rope is provided with suspension ring, and drag-line upper end is connected with suspension ring.
8. the tubaeform steel structure exterior finish operation platform of superelevation as claimed in claim 7, it is characterised in that：Suspension ring include U-shaped
Boatswain chair, boatswain chair is coiled into by HPB300 reinforcing bars, and the U-shaped mouth of boatswain chair is upward；It is arranged with two folders in parallel between two side walls of boatswain chair
Plate, clamping plate is galvanized steel plain sheet, and the upper and lower surface of two clamping plates respectively with the steel plate on the tubaeform steel structure of superelevation is fitted, drag-line winding
In in the U-shaped mouth of boatswain chair.
9. the building method of the operation platform described in claim 8, it is characterised in that：Comprise the following steps：
A, making girder：
The top-bottom chord of truss is made first by Ф 168*6 seamless steel pipes, truss is made using the seamless steel pipes of Ф 102 × 5
Web member, the truss produced is used as girder, girder overall length≤10 meter；
The quantity of girder determines according to the diameter of the tubaeform steel structure cross section of superelevation, it is ensured that when installing, each girder
Set along the radial direction of circle where the tubaeform steel structure cross section of superelevation, just around the tubaeform steel structure of superelevation after all erection of main beam
One week；Then, the installing plate of U-shaped is connected on the end of girder；
B, anchor ear is produced according to the diameter of the steel column on the tubaeform steel structure of superelevation：
Steel column is provided with superelevation is tubaeform steel structure, to ensure that anchor ear can be by steel column set wherein when anchor ear is made；
The quantity of anchor ear and the quantity of girder are equal；
Otic placode is welded in the extrados center of anchor ear, and the steel column on anchor ear and the tubaeform steel structure of superelevation is passed through into high-strength bolt
It is fixed；
C, making drag-line and suspension ring：
Outer drag-line is set with 800 ~ 1000mm of girder outer end distance on the girder, on the girder based on the girder outer end
Inhaul is set at the 1/5 ~ 3/5 of Liang overall lengths；
D, making equalizer bar：
Counter-jib is made using Ф 168*6 seamless steel pipes, counterweight is set on the outer end of counter-jib, and is set on counter-jib
Lifting rope hangers；
E, installation girder：
First, lifting rope is installed：Equalizer bar is bundled with girder, is hung up on two lifting rope hangers of equalizer bar and hung
Dress rope；Because counter-jib and girder are bundled, and lift position determination of the hangers on equalizer bar, balanced in binding
Need to ensure when beam and girder, two lifting ropes are located on the outer end of girder and apart from girder outer end respectively
At 800mm ~ 1000mm；Meanwhile, assisted suspension cable is lifted on equalizer bar, the length of assisted suspension cable is lift rope lengths 1.5
Times, the suspension centre of assisted suspension cable is in counterweight；Lifting rope and auxiliary lifting rope are connected on boom hoisting；
Then, boom hoisting is opened；Under boom hoisting effect so that girder reaches setting position, installed in girder outer end
Outer drag-line, installs inhaul on the inside of outer drag-line, and wherein inhaul and the distance of girder outer end is the 1/5 ~ 3/ of girder overall length
5；Inhaul is adjusted to tensioning state, outer drag-line is adjusted to relaxed state；
Then, the otic placode on the installing plate and anchor ear on girder is fixed by high strength bolt；
Finally, equalizer bar and girder are removed, then outer drag-line is also adjusted to tensioning state；Equalizer bar is hung by hanging apparatus
To ground；
F, installation secondary beam：
First, the full penetration butt welding connecting plate on girder；
Then, H profile steel is lifted to girder using boom hoisting, uses two high-strength bolts to cause connection on each connecting plate
Plate and H profile steel link together, to realize the installation of secondary beam；
G, step e, f is repeated in until all of girder and secondary beam are anterior installs；
Pine springboard is completely spread on h, construction panel：
First, by thickness for the pine springboard of 30 ~ 50mm is completely layered on girder and secondary beam, it is ensured that two pieces of junctions of pine springboard
In H profile steel；
Then, H profile steel and pine springboard are coupled together using bolt；
I, installation protection network：
First, channel-section steel of encorbelmenting is installed in the portion of encorbelmenting, it is ensured that there are a channel-section steel of encorbelmenting, the length of channel-section steel of encorbelmenting in each girder top
≤ 4 meters of degree；
Then, in encorbelmenting vertical steel wire rope of connected between channel-section steel and girder, distance is less than between adjacent vertical steel wire rope
2000mm；Again the distance between horizontal wire rope, adjacent horizontal wire rope is horizontally disposed with vertical steel wire rope to be less than
1500mm；The place that horizontal wire rope and vertical steel wire rope connect is connected by iron wire, in vertical steel wire rope and horizontal wire rope
In the presence of form steel wire；
Finally, safety barrier, close mesh safety net and safety net, close mesh safety net are set gradually from inside to outside on the inside of steel wire
Be fixed on steel wire with safety net, safety barrier is fixed on girder edge, and safety barrier height for 1.3 ~
1.7mm。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610425798.3A CN105888227B (en) | 2016-06-16 | 2016-06-16 | Superelevation is tubaeform steel structure exterior finish operation platform and its building method |
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| CN201610425798.3A CN105888227B (en) | 2016-06-16 | 2016-06-16 | Superelevation is tubaeform steel structure exterior finish operation platform and its building method |
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| CN105888227B true CN105888227B (en) | 2017-06-23 |
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| CN106760830B (en) * | 2016-12-09 | 2019-03-26 | 中铁十局集团有限公司 | Ultra-large type boundling polygon coal bunker group's cone steel coal hopper assembling and construction method |
| CN109779221A (en) * | 2019-03-27 | 2019-05-21 | 山东金城装饰工程有限公司 | Steel corridor bottom curtain wall construction platform and construction technology |
| CN111236604A (en) * | 2020-01-23 | 2020-06-05 | 山西五建集团有限公司 | Safe construction method for cantilever platform on cylinder main body structure |
| CN114108811B (en) * | 2021-11-30 | 2023-07-11 | 中建钢构工程有限公司 | Unsupported installation method of super high-rise conversion truss |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1190912A (en) * | 1958-01-28 | 1959-10-15 | universal scaffolding | |
| US4276957A (en) * | 1980-01-08 | 1981-07-07 | Kilgore H Lee | Portable scaffold assembly with movable anchor |
| US5664391A (en) * | 1996-04-01 | 1997-09-09 | Pfb Company | Roof anchor and hanging scaffold system |
| ES2288075B1 (en) * | 2005-06-24 | 2008-10-16 | Jose Luis Antuña Suarez | DEVICE FOR CONFIGURING A PLATFORM OR ANDAMIO IN AN EXISTING WALL. |
| CN103993728B (en) * | 2014-05-05 | 2015-11-25 | 泰兴市第一建筑安装工程有限公司 | A kind of assembling shaped steel is encorbelmented protection canopy |
| CN205276843U (en) * | 2015-12-17 | 2016-06-01 | 上海建工五建集团有限公司 | Instrument formula protection frame suitable for assemble protruding type component of integral concrete |
| CN205857661U (en) * | 2016-06-16 | 2017-01-04 | 中建七局建筑装饰工程有限公司 | Superelevation is tubaeform steel structure exterior finish operation platform and build and use equalizer bar |
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Inventor after: Bai Mei Inventor after: He Ying Inventor after: Wang Chenyu Inventor after: Yang Ruihua Inventor after: Yuan Wenbo Inventor after: Yin Shujun Inventor before: Bai Mei Inventor before: He Ying Inventor before: Wang Chenyu Inventor before: Yuan Wenbo Inventor before: Yin Shujun |