CN106703420B - Large span ball node Reticulated dome group's dead man lifting construction engineering method - Google Patents
Large span ball node Reticulated dome group's dead man lifting construction engineering method Download PDFInfo
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- CN106703420B CN106703420B CN201710075186.0A CN201710075186A CN106703420B CN 106703420 B CN106703420 B CN 106703420B CN 201710075186 A CN201710075186 A CN 201710075186A CN 106703420 B CN106703420 B CN 106703420B
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- dead man
- rack
- reticulated dome
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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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
-
- 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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/19—Three-dimensional framework structures
- E04B1/1903—Connecting nodes specially adapted therefor
- E04B1/1906—Connecting nodes specially adapted therefor with central spherical, semispherical or polyhedral connecting element
Abstract
The present invention relates to lifting, hoisting technology fields, specially large span ball node Reticulated dome group dead man lifting construction engineering method.This method uses dead man cluster, hangs multigroup compound pulley blocks（Purpose is to reduce speed, reduces tractive force）It is connected with each suspension centre hoist cable of rack.By be twisted combination tractive force each group pulley blocks, drive rack synchronize rise, by rack entirety uniform lift arrive be more than capital absolute altitude, using side be twisted drawing steel wire rope slowly loosen, the other side be twisted lock it is motionless, by rack integral shift alignment capital.Rack is dropped on capital with whole be twisted again, and is adjusted fixation.Rack assembly carries out assembly on ground, and easy construction, safety, construction quality is easily controllable, improves comprehensive benefit and economic benefit is apparent, reduces security risk.
Description
Technical field
The present invention relates to lifting, hoisting technology fields, specially large span ball node Reticulated dome group dead man lifting construction
Engineering method.
Background technology
Since existing venue buildings, storage building span are increasing, past large span grid roofing, using setting up full hall
Scaffold is taken a lot of work, the construction period is long, hidden danger is more as construction operation platform；According to crane lifting, machinery expenses are high, and because
Unbalance stress easily leads to rack deformation.
Invention content
In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a kind of large span ball node Reticulated dome group's dead mans
Lifting construction engineering method.
The present invention adopts the following technical scheme that realization：Large span ball node Reticulated dome group's dead man lifting construction work
Method includes the following steps：It makes smallest assembled rigid unit and diffusion is assembled around, the first stage is promoted, Reticulated dome is assembled outward, pulls out
The installation of bar cluster, second stage are promoted, Reticulated dome assembled and Reticulated dome fixation outward；
Wherein, the first stage is promoted and is promoted Reticulated dome using tripod, and hoisting depth is to meet next row lower boom
Subject to the mounting height of part and ball node；
The installation of dead man cluster includes levelling of the land compacting, steel pipe manufacturing into dead man, dead man positioning, the positioning of guy line anchor hole
It excavates, guy earth anchor is embedded, dead man group stands correction, cable wind rope adjustment tensioning, dead man pulley blocks are installed and lifting is twisted installation；
Second stage, which is promoted, uses dead man cluster, multigroup pulley blocks is connected with each suspension centre hoist cable of Reticulated dome, by twisting
Mill combination traction each group pulley blocks, drive Reticulated dome to synchronize and rise, and Reticulated dome entirety uniform lift is marked to more than capital
It is high；
The fixation of Reticulated dome is twisted the steel wire rope of drawing using side and loosens, the other side be twisted lock it is motionless, by spherical surface net
Frame integral shift is directed at capital, then is dropped to rack on capital with being all twisted, and is adjusted fixation.
Above-mentioned large span ball node Reticulated dome group's dead man lifting construction engineering method, make smallest assembled rigid unit the specific steps are
The spatial position of four lower edge balls is subjected to unwrapping wire, levelling, rule side according to ball-joint point coordinates, makes four lower edge balls in the same level
On face, four lower booms are installed successively, connection forms lower edge grid, and diagonal line deviation is no more than 3mm, then with wherein adjacent
Two ball nodes and connected lower boom be installation form wind up ball and adjacent two web members of cone are assembled into
" people " word is then co-mounted to other two web members on four lower edge ball nodes, forms a basic smallest assembled rigid unit.
Above-mentioned large span ball node Reticulated dome group's dead man lifting construction engineering method, second stage use in being promoted and hang ruler method
It is observed, on periphery, lower edge ball is each one suspended from steel ruler of the same race, and steel ruler one end is fastened on Reticulated dome rod piece, and bottom end is solid
It is scheduled on ground, then each steel ruler is observed with spirit level, rack can extract steel ruler out while Reticulated dome is promoted,
Observation personnel judges whether lifting synchronizes by observing the reading of steel ruler.
The present invention starts symmetrically to extend out assembled formation space cell using rack center, and stabilization is formed with the mutual drawknot of dead man
System is support mechanism, is lifting device with pulley blocks, so that rack is extended out assembled and is promoted alternately, each group dead man gradually connects
Power is promoted, and rack is promoted to designated position, labor intensity is alleviated, improves work efficiency, reduce labour cost.
Description of the drawings
Fig. 1 is the structural schematic diagram of smallest assembled rigid unit.
Fig. 2 is that smallest assembled rigid unit spreads the structural schematic diagram after assembly around.
Fig. 3 is the scheme of installation of dead man top sheave group.
Fig. 4 is Reticulated dome lifting schematic diagram.
In figure：1- fixed pulley groups, 2- running blocks, 3-, which is run, to restrict, 4- leading blocks, 5- earth anchors, 6- cable wind ropes, 7- dead mans,
8- hoist cables, 9- Reticulated domes, 10- concrete posts, 11- electronic crane scales.
Specific implementation mode
Large span ball node Reticulated dome group's dead man lifting construction engineering method, includes the following steps：Make smallest assembled rigid unit and to
Surrounding diffusion is assembled, the first stage is promoted, assembly, the installation of dead man cluster, second stage are promoted Reticulated dome outward, spherical surface net
Frame assembled and Reticulated dome fixation outward；Wherein, the first stage is promoted and is promoted Reticulated dome using tripod, hoisting depth
It is subject to the mounting height for meeting next row lower edge rod piece and ball node；The installation of dead man cluster includes levelling of the land compacting, steel
Control is made dead man, dead man positions, the positioning of guy line anchor hole is excavated, guy earth anchor is embedded, dead man group stands correction, cable wind rope adjustment
Tensioning, the installation of dead man pulley blocks and lifting are twisted installation；Second stage, which is promoted, uses dead man cluster, by multigroup pulley blocks and spherical surface
Each suspension centre hoist cable of rack is connected, and by being twisted combination traction each group pulley blocks, drives Reticulated dome to synchronize and rises, by Reticulated dome
Whole uniform lift is to more than capital absolute altitude；The steel wire rope that the fixation of Reticulated dome is twisted drawing using side loosens slowly, another
Side, which is twisted, locks motionless, and Reticulated dome integral shift is directed at capital, then with being all twisted and drop to rack on capital, and plus
It is fixed with adjusting.
When it is implemented, making smallest assembled rigid unit：Using a conical element in Reticulated dome centre as most basic
The spatial position of four lower edge balls is carried out unwrapping wire, levelling, rule side according to node coordinate, makes four lower edge balls same by module units
On one horizontal plane, four lower booms are installed successively, connection forms lower edge grid, and diagonal line deviation is no more than 3mm, then with
Two wherein adjacent ball nodes and connected lower edge are installation form, and wind up ball and adjacent two web members of cone are spelled
" people " word is dressed up, is then co-mounted on four lower edge ball nodes with other two web members, a basic small spelling list is formed
Member, as shown in Fig. 1.Using this smallest assembled rigid unit as assembled formwork, symmetrical diffusion is assembled around.All lower edge balls add branch
Support to control the position of other nodes, and should should check at any time be corrected during assembled on the basis of the position of bearing, absolute altitude,
Ensure installation accuracy, reduces accumulated error, as shown in Fig. 2.
First stage tripod is promoted and assembly：First stage is promoted sets up 10 suspension centres using tripod, and 10 5 tons are fallen
Chain is promoted, and hoisting depth is subject to the mounting height for meeting next row lower edge rod piece and steel ball, is promoted speed and is coordinated Construction of The Grids
Schedule requirement, assembly connect dead man suspension centre after being completed to dead man position.
Dead man cluster is installed
Dead man cluster technological process is installed：Levelling of the land compacting → steel pipe manufacturing is at dead man → dead man positioning → guy line anchor
Hole positioning excavation → guy earth anchor buries the → vertical correction → cable wind rope adjustment tensioning → dead man pulley blocks installation → lifting of dead man group
It is twisted installation.
Steel pipe manufacturing is at dead man：Dead man does promotion support using φ 402 × 12mm steel pipes, and often eradicate the long 24m of bar, on ground
Docking assembling is carried out, steel tube end part is opened up into groove, by lined duct in seam crossing（Length=150mm, thickness=dead man wall thickness=12mm）Or
Outer stiffener makes interface form double V-groove by the technique welding of single-side welding double-side forming, should be by whole dead man before welding
Straightening carries out a fixed weldering, it is ensured that the glacing flatness after dead man welding is respectively welded in the end of dead man and root and is slided for fixed
The lifting lug of wheel, and add floor；Lifting Lug is welded using transfixion and dead man, and lifting lug plate thickness is 2.0 times of dead man wall thickness,
Length is advisable outside dead man not less than 400 ㎜ with exceeding, and plate is wide to be not less than 250mm, and pulley suspension point is not small away from lifting lug edges of boards edge
In bore dia.Dead man top cable wind rope mooring points will be with cable wind rope point-blank, shackle plate and the reversed pulley on dead man pedestal
Mooring points is in the parallel plane with dead man.After the completion of dead man combination, pulley blocks are fixed on dead man and penetrate main rope.And by cable
Wind rope is solid by contact angle connection card.With cable wind rope fixed vertical, and the cable wind rope of dead man is interknited into tensioning.Peripheral guy
Rope is according to field condition respectively fixedly at anchor.
Vertical dead man：Being computed vertical dead man with autocrane and can be twisted hand fit, and dead man pedestal size is 600 ×
The mm of 600 mm × 70, for dead man pedestal by 20 mm steel plates and 12 0.6m long φ 50 × 3.5mm steel pipe manufacturings, dead man institute is in place
The ground set should carry out basement process, ensure that bearing capacity is more than 150KN/m2, thickness can be used and be more than 500mm 37 lime earth bed courses
Or 300 thick concrete bed courses, process range are more than dead man pedestal wild card profile 500mm.Installation lifts ears and fastens interim at the top of dead man
Cable wind rope is fixed temporarily, and after the standing of all dead mans, all horizontal and oblique pull cable wind rope is all drawn, and reach and set
After meter requires, interim cable wind rope is removed, and is supervised within 24 hours with special messenger, has vehicular traffic to touch extension cable wind rope to prevent scene, adjusts
It is whole to design position, and ensure dead man verticality.Start that pulley blocks, installation such as Fig. 3 institutes of pulley blocks are installed after dead man is vertical
Show, the absolute altitude and whole height in place when dead man height is according to network frame hoisting are designed.It assembles dead man and is fabricated to lifting
Dead man is segmented removes after the completion by column, network frame hoisting.Using flower threading method, every group of dead man is arranged two sets of pulley blocks and fastens 4 pulley blocks
Suspension centre is twisted using two 5 tons and is lifted.
Dig earth anchor：According to construction condition, ground anchor pit is dug（Whether ground anchor pit should check soil condition after excavating
Meet design requirement）.The size of ground anchor pit is 2000 × 700mm, ground anchor pit depth 2500mm, buries 2 φ 165 × 10mm steel pipes
Length direction is cheated along anchor, two bottom sides are dug a hole, and laterally add the steel pipe of four 140 × 5mm of φ, both sides again above steel pipe along anchor hole
It digs a hole embedded, in order to stablize lower section main stress steel pipe, main stress steel pipe is embedded in bottom, ground anchor line is bifilar a diameter of φ
The angle of the steel wire rope of 21.5mm, ground anchor line and level ground will with the angle automatching of cable wind rope, along the centre of ground anchor pit transverse direction
Position shovels out slope, with ensure with the same angle of cable wind rope, ground anchor pit backfill will select cohesive soil, cannot select sandy soil and cannot
There are stone and impurity, backfills per mono- steps of 250mm and hand compaction is to top.
Earth anchor Force Calculation.It is the key of entire Hoisting Program success or failure, due to the stress of earth anchor whether earth anchor stability under loading
Be decided by the construction of earth anchor and local soil condition again, though currently, there is various theoretical calculation formulas, be difficult to determine it is practical by
Force value, therefore, important stress earth anchor should do experiment, and examine its buckling safety factor（k≥2）.According to rack integral hoisting feature.
The earth anchor of fixed oblique guy should use oblique loading earth anchor and vertical backplate to reinforce oblique loading earth anchor.
For in hoisting process, when fastening Sling Rope, every steel wire rope must assure that steel wire rope does not kill mutually and stress point
Across the centre of sphere；Ensure steel wire rope during network frame hoisting, without impinging on rod piece, and angle ≯ 5 ° of Sling Rope and dead man, it is two-way
It is arranged symmetrically.Angle ≮ 45 ° of Sling Rope and suspension centre ball.
Second stage dead man is promoted and assembly, and second stage is twisted conduct using 10 402 × 12mm of Ф dead mans and 20
Main hanging device.
It is the important guarantee for implementing and examining comprehensively entire Hoisting Program integrity that examination, which is hung, is tried there are three the purposes hung：One
It is the security reliability for examining lifting equipment, second is that check influence of the suspension centre to net rack installation, third, coordinate from commanding to lifting by crane,
Guy slips rope and is twisted total manoeuvre of operation.Rack assembly welding is finished through that can start rack integral hoisting after the assay was approved.
Examination is carried out before lifting to hang.
Try the way hung：It will be twisted fixation first, adjustment cable wind rope keeps dead man vertical, slowly pushes being twisted, makes net
Frame is from support, if rack offsets to one side, stops lifting, and after adjustment cable wind rope is elastic, then lifts, adjusts until rack does not have
Stop being promoted after thering is horizontal displacement, network frame hoisting to leave support 300mm, hoisting machine tool be checked comprehensively, by all problems
It all solves, it is ensured that perfectly safe.Inspection item includes whether dead man is vertical, and whether cable wind rope has been tensioned, and dead man owns above and below
Whether snap ring is tightened, and cable wind rope card quantity tightens degree, and whether there is or not damages and sliding to loosen, and runs whether rope has loosening, is twisted position
A series of and equipment field conditions related with lifting such as jack in place.
Rack integral hoisting：Examination hang check it is errorless after, if full-time one people of commander in chief, several names of observer, the division of labor is clear, duty
Appoint and arrive people, you can formal lifting.Rack must accomplish that synchronous coordination lifts by crane in lifting process according to each Hanging point's coordinates difference of rack
（The promotion speed of each suspension centre is adjusted according to the coordinate difference of each suspension centre）, it is ensured that two neighboring lifting point rises difference control adjacent
In the 1/400 of suspension centre distance, consecutive points promotion highness change is appropriate in 100mm or less, check at any time the reality at each suspension centre
Force-bearing situation and each anchor point safe coefficient stop being promoted after rack reaches the height of design requirement, locked by being all twisted,
Starting periphery one and encloses the in bulk of rod piece, all rod piece assembly in bulk are completed, and after bearing welds, this lifting is fully completed,
Carry out the assembly of the rod piece of overhanging part.
When rack integral hoisting, each suspension centre raising and the synchronism of decline should ensure that.Keep rack it is horizontal always rise or
Decline is highly important, otherwise rack itself will be made to generate torsional deformation, causes the hurried variation of hoisting mechanism load, even
Influence the success or not entirely to work.Therefore following measures must be taken, ensure that lifting synchronizes.
Synchronisation measures：The winding method and pulley door number of hoisting sheave steel wire rope should be consistent；Hoist rope it is straight
Diameter should select same specification（Same strength grade）, because the diameter of hoist rope influences whether the diameter being twisted, and directly
Influence the linear velocity for being twisted steel wire rope；Lifting is twisted the initial wrap number of steel wire rope on reel and length is preferably unified, and
By the tension force of steel wire rope in same numerical value before formal lifting.It lifts 20 electric tackles using and control must be set synchronize and carry
The master switch controller that rises and be respectively twisted the branch switch controller used when fine tuning, when lifting according to practical hoisting depth difference into
Row fine tuning, each suspension centre hang 20 tons of wireless electronic hanging balances, lifting load all the time are reached each branch respectively respectively
On controller, whether the variation that lifting commander in chief can observe load on each shunt controller by supervisory control desk synchronizes, and finds
It when weightless, is finely adjusted in time, ensures rack Synchronous lifting.
Operation training must be synchronized before formal lifting, so that the operation being twisted is unified, i.e., in centralized and unified commander
Down while operating.
It is observed using ruler method is hung, on periphery, lower edge ball each one suspended from 5 meters of steel ruler of the same race, fasten by steel ruler one end
On rod member for grid, bottom end is fixed on ground（Absolute altitude is consistent）, then each steel ruler is observed with spirit level（Often promoted
500mm measures primary）, rack can extract steel ruler out while rack is promoted, Observation personnel by observe steel ruler reading to
Lifting commander in chief personnel report whether lifting synchronizes, so that commander in chief adjusts the lifting velocity of each dead man in time.
Vernier control in hoisting process will be carried out using tackle pulley, adjustment in need position adjustment tackle pulley match
It closes measurement and control instrument and is finely adjusted control.Due to using fourfold block group, so during hoisting grid, power plant is lifted
8L distances are moved, rack moves L distances, so can realize the high fine-tuning of hoisting grid by adjusting hanging apparatus；It hangs
The fine tuning of rack level angle is filled, can be realized by the fine tuning tackle pulley connected between network frame hoisting point and Hoisting tackle group.
When rack is installed to bearing, rack is lifted beyond bearing and meets installation overhanging end rack, in bearing
Place sets up jenny scaffold as operation platform, to complete one hoop net frame of outermost, jenny scaffold with welding position completion
And it moves.
It lifts dead man and removes and coordinated using 50t autocranes, by dead man from decorating position vertical-lift to more than rack
Then absolute altitude rotates horizontally and removes the method that dead man is placed into ground.It is just being hung using a bit, one is arranged at the top of dead man
A suspension centre ensures to keep plumbness in dead man disassembly process.Crane is promoted, and hoist cable is painstaking, makes dead man major part gravity load
It is undertaken by crane.Interim cable wind rope is arranged in adjacent position dead man, prevents its inclination, unclamps quasi- dismounting dead man and other dead man tops
The taut string for binding a plait and cable wind rope of connection.Dead man is integrally promoted, and dead man is extracted out from rack top.
Compared with prior art, the beneficial effects of the invention are as follows：Spherical net brace is a kind of novel roof system load-carrying members, is belonged to
In multiple indeterminate space structure system, it changes the stress of plane roof truss structure, can bear to the lotus of each side
It carries.Its structure novel is beautiful, and work force path is simple and direct, and rod piece regularity is strong, and from heavy and light, space is big, and span is big.Between rod piece
All using being welded to connect, cost, easy to operate is reduced.The present invention adopts new technology, new technology, new equipment, new material four
New technology is effectively controlled Large-span Spherical rack in rod piece processing and fabricating, bar using advanced equipment, advanced technology etc.
Part assembles, and the common quality defect of assembled process alleviates labor intensity, improves work efficiency, and reduces labour cost, saves
Material.
Claims (2)
1. large span ball node Reticulated dome group's dead man lifting construction engineering method, it is characterised in that include the following steps：Make small spelling
Unit and around diffusion are assembled, the first stage is promoted, assembly, the installation of dead man cluster, second stage carry Reticulated dome outward
It rises, Reticulated dome assembled and Reticulated dome fixation outward；
Wherein, the first stage promoted Reticulated dome is promoted using tripod, hoisting depth with meet next row lower edge rod piece and
Subject to the mounting height of ball node；
The installation of dead man cluster includes levelling of the land compacting, steel pipe manufacturing is positioned at dead man, dead man, the positioning of guy line anchor hole is opened
It digs, guy earth anchor is embedded, dead man group stands correction, cable wind rope adjustment tensioning, dead man pulley blocks are installed and lifting is twisted installation；
Second stage, which is promoted, uses dead man cluster, multigroup pulley blocks is connected with each suspension centre hoist cable of Reticulated dome, by being twisted group
Conjunction traction each group pulley blocks, drive Reticulated dome to synchronize and rise, by Reticulated dome entirety uniform lift to more than capital absolute altitude；
The fixation of Reticulated dome is twisted the steel wire rope of drawing using side and loosens, the other side be twisted lock it is motionless, Reticulated dome is whole
Body displacement alignment capital, then dropped to rack on capital with being all twisted, and adjusted fixation；
Above-mentioned making smallest assembled rigid unit the specific steps are the spatial position of four lower edge balls is carried out unwrapping wire according to ball-joint point coordinates, is looked for
Flat, rule side, makes four lower edge balls on the same horizontal plane, installs four lower booms successively, connection forms lower edge grid, right
Linea angulata deviation is no more than 3mm, then using two wherein adjacent ball nodes and connected lower boom as installation form, by cone
Wind up ball and adjacent two web members, is assembled into " people " word, is then co-mounted to four lower edge ball-joints with other two web members
On point, a basic smallest assembled rigid unit is formed.
2. large span ball node Reticulated dome group dead man lifting construction engineering method according to claim 1, it is characterised in that the
It is observed in two-stage boost using hanging ruler method, on periphery, lower edge ball each one suspended from steel ruler of the same race, fasten by steel ruler one end
On Reticulated dome rod piece, bottom end is fixed on ground, is then observed to each steel ruler with spirit level, is promoted in Reticulated dome
While rack steel ruler can be extracted out, Observation personnel by observe steel ruler reading judge lift by crane whether synchronizes.
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| CN108396970A (en) * | 2018-03-15 | 2018-08-14 | 江苏恒久钢构有限公司 | A kind of integral installation method of plane grid |
| CN108915279B (en) * | 2018-09-14 | 2023-06-16 | 山西建筑工程集团有限公司 | Ball node net rack small unit ground welding grabbing and splicing jig |
| CN109138452A (en) * | 2018-10-19 | 2019-01-04 | 青岛建集团有限公司 | Heavy construction bolt sphere steel pipe rack entirety fast lifting construction technology |
| CN110029829B (en) * | 2019-05-27 | 2021-07-13 | 中国十九冶集团有限公司 | Jacking installation construction method for latticed shell structure |
| CN111335476B (en) * | 2020-04-02 | 2021-06-08 | 山东天齐置业集团股份有限公司 | Staggered floor steel mesh frame subsection lifting accumulative assembling construction method |
| CN111827483B (en) * | 2020-08-18 | 2022-03-18 | 浙江中南建设集团钢结构有限公司 | Construction method for roof curved surface # -shaped combined steel truss girder |
| CN113090036A (en) * | 2021-04-20 | 2021-07-09 | 中国建筑第二工程局有限公司 | Integral hoisting construction method for steel structure net rack |
| CN113668694B (en) * | 2021-07-09 | 2022-07-26 | 中建一局集团建设发展有限公司 | Connection node for avoiding intersection of cantilever truss, inhaul cable and suspension column and construction method |
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