CN110374200A - Large span rigidity unevenly mixes rack high altitude bulk method - Google Patents
Large span rigidity unevenly mixes rack high altitude bulk method Download PDFInfo
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- CN110374200A CN110374200A CN201910674747.8A CN201910674747A CN110374200A CN 110374200 A CN110374200 A CN 110374200A CN 201910674747 A CN201910674747 A CN 201910674747A CN 110374200 A CN110374200 A CN 110374200A
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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
- E04B1/34—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
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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
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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
- E04G21/16—Tools or apparatus
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses a kind of large span rigidity unevenly to mix rack high altitude bulk method, this method first uses special designing software to carry out three-dimensional modeling to rack and carries out sunykatuib analysis to work progress when constructing, determine that rack installs reinforcement unit, set up reinforcement unit support jig and movable supporting frame, then it slides and unloads using movable supporting frame and complete the installation of reinforcement unit rack, to reinforcement unit row, unloading is in bulk backward by several times again, and pre- arch camber is carried out to subsequent rack, subsequent rack is installed, after the installation of all racks, reinforcement unit is finally unloaded, to complete mixing rack high altitude bulk.Construction efficiency of the present invention is high, improves the safety of grid structure entirety and the precision of grid structure, and all kinds of large span bolt spheres non-uniform to rigidity and solder sphere mixing rack installation have directive significance.
Description
Technical field
The invention belongs to industrial building technical fields, and in particular to a kind of large span rigidity unevenly mixes rack high-altitude and dissipates
Dress method.
Background technique
Grid structure is the space structure that the rod pieces such as steel pipe are linked by sphere nodes, have light-weight, rigidity is big,
The advantages that anti-seismic performance is good is suitable for the large public buildings and Large Column Spacing workshop etc. such as gymnasium, theater, station, public place of entertainment
Industrial building.Increase welded spherical node in the large span grid span centre that single bolt ball is unable to satisfy design requirement and forms hybrid network
Frame, not only increases rack overall stiffness to control the deformation of rack, and the mixing rack of this local welding ball, than
Integral solder ball grid is more economical；Mixing rack eliminates influence and welding of the extensive overhead welding to the whole duration simultaneously
Deform the influence generated to rack installation accuracy.But existing large span mixing rack form of construction work is applied to large span and just
It is unloaded when in the uneven mixing rack of degree in the bolt sphere of movable supporting frame construction and solder sphere mixed form rack monolithic region
Afterwards, the solder sphere region being relatively large in diameter can generate biggish deformation, influence integrally-built safety, the hybrid network after being installed
Frame precision is low.
Summary of the invention
The present invention provides a kind of large span rigidity and unevenly mixes rack high altitude bulk method, to solve it is existing greatly across
Degree rigidity unevenly mixes that rack construction precision is low, the problem of safety of structure difference.
In order to reach above-mentioned technical effect, the technical solution adopted by the present invention is that:
A kind of large span rigidity unevenly mixes rack high altitude bulk method, which is characterized in that including following operating procedure:
S1. it determines that rack installs reinforcement unit: three-dimensional modeling being carried out to rack using special designing softwares such as MST and to applying
Work process carries out sunykatuib analysis, determines that rack in the work progress before no system, finds the operating condition of overstressing, and use
Increase the mode of support jig to form the first across the operating condition to overcome overstressing of reinforcement unit, analyzes each installation operating condition and use
Temporary support moulding bed is in the presence of after reinforcing to rack, determines the unit truss of suitable quantity temporary support as rack
The arrangement and method for construction of reinforcement unit is installed；
S2. reinforcement unit support jig is set up: being analyzed identified rack according to construction simulation analysis and is installed reinforcement unit
Arrangement and method for construction, arrange reinforcement unit support jig supporting point deforming biggish solder sphere region, set up reinforcement unit support
Moulding bed；
S3. movable supporting frame is set up: setting up reinforcement unit support jig simultaneously, it is flat as operation to set up movable supporting frame
Platform, movable supporting frame use a standard column away from for a sliding element, and the operating surface of movable supporting frame is lower than lower edge；
S4. reinforcement unit rack is installed: after having set up reinforcement unit support jig and movable supporting frame, in movable supporting frame
Upper carry out unwrapping wire, makes lower edge ball node coordinate, and arrange positioning bracket, adjusts absolute altitude；In ball node lower part, interim branch is set
It asks the mode being supported to slide and unload by movable supporting frame and completes single unit truss installation；When installation, rack exists
In bulk to carrying out on movable supporting frame, after single span region rack is installed, movable supporting frame is skidded off, then installs second piece of region
Rack, and so on until complete the installation of all racks, twisted eventually to first rack bolt ball, the welding of solder sphere region is completed
Afterwards, the temporary support point on movable supporting frame top starts to start to unload to two sides from intermediate position；It is temporarily propped up in movable supporting frame
Setting monitoring point carries out the monitoring of reinforcement unit installation process after support point unloading；
S5. reinforcement unit unloads by several times: simulating reinforcement unit by professional software and dismantles by several times, and analyzes it and apply to subsequent
Work influences, and formulates optimal gradation unloading arrangement and method for construction, divides according to the gradation unloading arrangement and method for construction of formulation reinforcement unit
Secondary unloading construction, after unloading, it is in bulk to carry out senior middle school outward based on reinforcement unit；
S6. the pre- arch camber of subsequent rack: simulating subsequent rack by professional software and install, and to the installation of subsequent rack deform into
The deformation values of row analysis, the subsequent rack installation before not unloaded with reinforcement unit are analysis foundation, and deformation values are subtracted unloading value
As springing quantum, calculated by sequential construction analysis in the case where interim moulding bed partial relief, subsequent rack pre- arch camber,
Feasible arch camber scheme is formulated, the pre- arch camber of subregion is carried out to ball node according to the arch camber scheme of formulation；
S7. subsequent rack installation and installation process monitoring: equally pass through mobile support with reinforcement unit rack mounting means
Subsequent rack installation is completed in frame sliding and unloading, and every rack is respectively provided with monitoring point after movable supporting frame unloading and is installed
Process monitoring；
S8. reinforcement unit is finally unloaded and is monitored: being carried out most using gradation, staging to reinforcement unit temporary support moulding bed
Unloading eventually waits half an hour after every grade of unloading, and repetition measurement monitors rack deformation, carries out in the case where ensuring safety next
Grade unloading finally unloads until completing reinforcement unit.
Further, in the reinforcement unit that the step S1 determines rack installation, suitable quantity temporary support is determined
The method of unit truss are as follows: in construction simulation analysis analysis, to increase after support it is ensured that the operating condition rod piece do not occur super
The mode of the case where stress analyzes situation of each installation operating condition after reinforcing using temporary support to rack, until due to facing
When support it is too many, interior welds deformation of ball is insufficient, and support is caused to be shifted out code requirement, and temporary support moulding bed quantity is excessive
Caused by support be shifted out the reinforcement unit that the unit truss before code requirement is installed as rack.
Further, during the step S2 reinforcement unit support jig is set up, the temporary support moulding bed uses single-point branch
Support, gate type support frame, the support of combination Bailey bracket or self-control lattice support frame.
Further, during the step S2 reinforcement unit support jig is set up, the supporting frame lower part of support jig is set up
Ground need to have enough bearing capacities.
Further, during the step S3 movable supporting frame is set up, the support frame width for the movable supporting frame set up is greater than
Column is away from the operating surface of movable supporting frame is lower than lower edge 300mm.
Further, during the step S3 movable supporting frame is set up, the movable supporting frame is in fixed scaffold lower end
The fixation scaffold repacking structure of certain amount and the scaffold special pulley part with certain bearing capacity is added, pulley part passes through
Upright bar is fixedly connected with fixed scaffold, and pulley part is evenly distributed in fixed scaffold lower part, and setting is flat below movable supporting frame
Steady sliding rail, pulley part pulley are set in sliding rail.
Further, in the step S4 reinforcement unit rack installation, unit truss installation is using every point-supported mode
Installation, frame ball and rod member for grid are installed simultaneously.
Further, during the subsequent rack installation of the step S7 and installation process monitor, subsequent rack supporting point setting exists
Deform maximum region.
Further, during the step S8 reinforcement unit is finally unloaded and monitored, rack unloading is using adjusting branch support
Jack is completed, and when unloading draws scale value on jack, and has special messenger to command the synchronism for guaranteeing unloading.
Further, it further includes rack after the completion of load shedding that the step S8 reinforcement unit, which is finally unloaded and monitored,
Grid structure is checked again when not being detached from jack, is reinforced when necessary.
Compared with prior art, the beneficial effects of the present invention are:
The present invention carries out three-dimensional modeling by using special designing software and analyzes construction simulation analysis, determines that rack is pacified
Reinforcement unit is filled, interim moulding bed is set up to initial part rack and forms reinforcement unit, using reinforcement unit as subsequent outside progress
The basis of high altitude bulk, thus the deformation during reducing high altitude bulk, it is ensured that the safety of structure.By gradation to " reinforcement is single
Member " support jig is unloaded, and is avoided disturbing deficiency under welding ball portion, is pushed up inclined net rack support；By to the subsequent net of reinforcement unit
Frame installation carries out sequential construction analysis, and carries out pre- arch camber to rack according to each operating condition deformation values being calculated, after ensure that
The precision of continuous rack installation, improves the safety of grid structure.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects, features and advantages of the invention can
It is clearer and more comprehensible, the present invention is described in further details with reference to the accompanying drawings and examples, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.
Detailed description of the invention
Fig. 1 is present invention mixing rack high altitude bulk construction process figure.
Fig. 2 is lifting jack unloading schematic diagram when reinforcement unit of the present invention finally unloads.
Specific embodiment
As shown in Figure 1, a kind of large span rigidity unevenly mixes rack high altitude bulk method, this method includes following step
It is rapid:
S1. it determines that rack installs reinforcement unit: three-dimensional modeling is carried out to rack using MST or other special designing softwares,
And carry out construction simulation analysis analysis, by sunykatuib analysis, determine rack in the work progress before no system each operating condition from
Body stress condition finds the operating condition of overstressing, by the operating condition of overstressing come shape by the way of increasing support jig in time
At the first across dividing by this method it is ensured that the case where rod piece overstressing does not occur in the operating condition after increasing support of reinforcement unit
Situation of each installation operating condition after reinforcing using temporary support to rack is analysed, until since temporary support is too many, inside weldering
It receives and deforms deficiency, support is caused to be shifted out code requirement, excessively cause support to be shifted out specification interim moulding bed quantity
The reinforcement unit that unit truss before it is required that is installed as rack.
S2. reinforcement unit support jig is set up: setting up reinforcement unit support jig, the supporting point of reinforcement unit support jig
It is arranged in the biggish solder sphere region of deformation, after all racks all installation, temporary support moulding bed can unload dismounting；Temporarily
Support jig can be using shapes such as simple single-point support, gate type support frame, the support of combination Bailey bracket and self-control lattice support frames
Formula should specifically be determined according to the specific stress condition of support frame and height.Specially bearing capacity is smaller, the lower feelings of support height
Preferred single-point and gate type support under condition；Bearing capacity is larger, Bailey bracket support is preferably combined in the higher situation of support height and
Make lattice support frame by oneself；When setting up, support jig is subjected to certain rack load, and the ground of supporting frame lower part is necessary
There are enough bearing capacities, rail case need to be set when site condition is poor, lower part needs that concrete foundation is arranged when necessary.
S3. movable supporting frame is set up: using movable supporting frame as operating platform；Movable supporting frame uses a standard column
Away from for a sliding element, support frame width is preferably slightly larger than column away from so as to installation unit edge rack and installation peace when setting up
Full fence；To guarantee the installation of rack and facilitating support rack ball node, the operating surface of movable supporting frame is slightly below lower edge, preferably
For lower than lower edge 300mm.It is transformed as far as possible using having fixed scaffold when movable supporting frame is set up, bottom is using carrying
Power is 2 tons of scaffold special pulley parts, while according to scaffold self weight and the bearing capacity of top construction loads and pulley, being calculated
The upright bar quantity of pulley need to be set, and accomplish that the pulley of setting is evenly distributed in movable supporting frame lower part.To guarantee that pulley is normal
It rolls, stable sliding rail is set below pulley, is i.e. the ground of rail inferior portion needs to do compacting leveling processing.
S4. reinforcement unit rack is installed: unwrapping wire is first carried out on movable supporting frame, tentatively makes lower edge ball node coordinate,
And arrange positioning bracket, absolute altitude is adjusted using screw rod；It is arranged by the way of interim rest is supported using in ball node lower part again
Carry out rack installation；Settable interim chock increases the stability of interim rest between supporting point and movable supporting frame.To subtract
Pressure of the light rack to support frame interim rest point, it is preferred to use every point-supported mode.Rack, which is mounted on, places lower edge ball extremely
Using the jack on bracket or the adjustment that the adjustment device such as screw rod carries out absolute altitude and coordinate is reconciled when on bracket.Frame ball and net
Hack lever part is installed simultaneously, installs lower edge ball and installation band winds up the cone rack of ball while lower edge rod piece, installation upper cord member,
The transverse bar member winded up between ball node.And it is done in the same fashion installation, until completing single unit truss.Due to welding
Ball takes control welded gaps, control unit lattice size in solder sphere installation the problem of assembly is easy to produce cumulative errors,
And then the method for controlling control overall dimensions, making to be welded on can be completed after the completion of assembly, shorten the solder sphere region construction time.
Control will make the cornerwise error of every cell first when solder sphere is constructed, and control the deviation of overall dimensions simultaneously, preferably control
Making the cornerwise error of every cell is ± 3mm, and the offset of lower edge ball node is 2mm, and controls the deviation of overall dimensions simultaneously
Value is not greater than ± 2mm.When the both ends of a piece rod piece and solder sphere are welded, forbid two ends while welding, solder sphere and
The group of rod piece, which is filled with three spot welding, to be advisable, and confirms that bushing pipe is installed in place before spot welding, sews up quality by regulation detection after welding procedure is complete,
Guarantee that welding quality must reach design requirement.
Movable supporting frame sliding and unloading in reinforcement unit rack installation process: rack carries out scattered on movable supporting frame
Fill rack, after single span region rack is installed, scaffold is skidded off, second piece of region rack is installed, and so on until complete
All rack installations.Twisted eventually after first rack bolt ball, after the completion of the welding of solder sphere region, movable supporting frame top it is interim
Supporting point starts to start to unload to two sides from intermediate position.Since the support jig of reinforcement unit is not removed, unloading point net
The amount of deflection of frame will not generate too big variation；After rack has unloaded, rack own wt is all born on pillar, shelf
Activity fixed column stretches height, removes bottom and is fixed temporarily with timber wedge, shelf is shifted onto second rack installation site using hoist engine.
Butter is arranged in slipping, avoid it is stuck, while after sliding in place on channel steel welding steel or reinforcing bar as limit；It is slid onto
Rail pulley both sides are blocked with timber wedge after installation site, fix shelf, stablize power when bearing rack installation.Then second is installed
Pin rack, same method operating, is attached to always the other end of rack.
S5. reinforcement unit unloads by several times: setting since the interim moulding bed of reinforcement unit can be such that solder sphere region deformation does not reach
Evaluation influences bolt sphere and standoff region, it is therefore desirable to carry out gradation unloading to reinforcement unit unit.Pass through professional software mould
Quasi- reinforcement unit is dismantled by several times, and analyzes it to subsequent construction influence, optimal gradation unloading arrangement and method for construction is formulated, according to formulation
Gradation unloading arrangement and method for construction to reinforcement unit carry out by several times unloading construct, by several times unload after, rack is laggard to reinforcement unit
Row is in bulk, to ensure that stress is controlled, will not transfinite.
S6. the pre- arch camber of subsequent rack: simulating subsequent rack by professional software and install, and to the installation of subsequent rack deform into
Row analysis is not unloaded front and back with reinforcement unit and continues the deformation values of rack installation for analysis foundation, deformation values are being subtracted unloading value
As springing quantum, calculated by sequential construction analysis in the case where interim moulding bed partial relief, subsequent rack pre- arch camber,
Arch camber arrangement and method for construction is formulated, pre- arch camber is carried out to ball node according to the arch camber arrangement and method for construction of formulation.
S7. subsequent rack installation and installation process monitoring: subsequent rack installation is installed with reinforcement unit rack, due to movement
After support frame is unloaded and slid away, subsequent scaffold does not have support jig support, it is therefore necessary to carry out the prison of each operating condition in this part
It surveys, every rack is required to setting monitoring point after movable supporting frame unloading, it is ensured that safety.Subsequent rack installation is using interim branch
When holding in the palm dot interlace support, supporting point setting is deforming maximum region, such as span centre position.
S8. reinforcement unit is finally unloaded and is monitored: rack be all installed after to reinforcement unit temporary support moulding bed into
The final unloading of row.Unloading is carried out using gradation, staging, and fractional load, remaining load have been shed after the completion of reinforcement unit
Divide 2-3 progress according to rack theoretical calculation deformation values, half an hour, and repetition measurement monitoring rack deformation waited after every grade of unloading,
Ensure to carry out next stage unloading in the case where safety.Unloading (such as Fig. 2 of rack is completed using branch support jack 1 is adjusted
It is shown), it needs when unloading to draw scale value on jack, and there is special messenger to command the synchronism for guaranteeing unloading.Load shedding is complete
Cheng Hou, rack illustrate that practical distortion is deformed greater than theoretical calculation still without jin top is detached from, existing defects after rack installation, at this time
It needs to be reinforced when necessary from new review grid structure.
Present invention process principle: the rack of bolt sphere and solder sphere mixed form is in construction, above movable supporting frame
After the unloading of monolithic rack, due to the not formed entirety of uneven and rack of the rigidity of rack, the solder sphere region meeting being relatively large in diameter
Biggish deformation is generated, to influence whether the safety of structure.Therefore not formed whole rack lower part is unloaded in support frame monolithic
It must be provided with interim moulding bed before load, be supported in the biggish position of rigidity, form local strengthening.Simultaneously during the installation process, rigidity
Biggish solder sphere position is as excessive such as setting support, can be produced without the case where reaching expected deformation values, can make in this way rigidity compared with
Low bolt sphere position generates offset.In the case that especially bolt sphere is heavily located at support periphery, internal solder sphere does not have
It is disturbed under enough, it is excessive and the case where support node is lifted off embedded part to will lead to neighboring area stress.Therefore temporary support moulding bed
It only is preferably used to reinforce unit, and determines reinforced region and reinforced region in such a way that construction simulation analysis is analyzed
Influence with construction progress to peripheral structure.Pass through analysis, it is ensured that it is inadequate in reinforcement unit moulding bed jack-up position distortions, to periphery
Before structure has an impact, partial relief is carried out in advance, it is ensured that reinforcement unit will not force rack to generate deviation and internal force because of crossing
It transfinites.Based on the reinforcement unit for having formd certain globality, high altitude bulk is carried out outward.Support frame moves unloading and opens
The deformation values of rack are at controllable state afterwards, will not be deformed it is excessive cause structure safe, then by sequential construction analysis,
It predicts subsequent deformation values in bulk, by each operating condition deformation values, carries out the pre- arch camber in subregion, to guarantee the mobile support of rack installation
Frame remove after rack deformation in the allowed band for designing and standardizing.By determining that rack is reinforced with sequential construction analysis
Unit carries out high altitude bulk by reinforcement unit, is unloaded the major diameter solder sphere region deformation of reinforcement unit not by gradation
Enough influences generated to peripheral structure are eliminated.Become simultaneously with each unit operating condition in bulk on the outside of the reinforcement unit that is calculated
Based on shape value, the pre- arch camber of subregion is carried out, it is ensured that the installation accuracy of rack.
The present invention carries out three-dimensional modeling by using special designing software and analyzes construction simulation analysis, determines that rack is pacified
Reinforcement unit is filled, interim moulding bed is set up to initial part rack and forms reinforcement unit, using reinforcement unit as subsequent outside progress
The basis of high altitude bulk, thus the deformation during reducing high altitude bulk, it is ensured that the safety of structure.By gradation to " reinforcement is single
Member " support jig is unloaded, and is avoided disturbing deficiency under welding ball portion, is pushed up inclined net rack support；By to the subsequent net of reinforcement unit
Frame installation carries out sequential construction analysis, and carries out pre- arch camber to rack according to each operating condition deformation values being calculated, after ensure that
The precision of continuous rack installation, improves the safety of grid structure.The present invention is suitable for that full hall support frame is not used to carry out whole
All kinds of large span bolt spheres and solder sphere of body bearing mix rack, and it is full that sliding support frame has used part support frame just to accomplish
The effect of hall mounting platform, saves place, supporting frame construction time and funds, and rack increases part during the installation process and faces
When support, greatly improve installation effectiveness, make rack installation be more easier.The setting of rack springing quantum, completely solves rack
The numerical problem of arch camber has directive significance to the construction of rack, be suitable for the non-uniform all kinds of large span bolt spheres of rigidity and
Solder sphere mixes rack.
The present invention is not limited to above-mentioned specific embodiment, for those of ordinary skill in the art from above-mentioned structure
Think of sets out, and without creative labor, made various transformation are within the scope of the present invention.
Claims (10)
1. a kind of large span rigidity unevenly mixes rack high altitude bulk method, which is characterized in that including following operating procedure:
S1. determine rack install reinforcement unit: using special designing software to rack carry out three-dimensional modeling and to work progress into
Row sunykatuib analysis determines rack in the work progress before no system, finds the operating condition of overstressing, and support using increasing
Head of the mode of moulding bed to form reinforcement unit analyzes each installation operating condition and uses temporary support across the operating condition to overcome overstressing
Moulding bed is in the presence of after reinforcing to rack, determines that the unit truss of suitable quantity temporary support is installed as rack and reinforces
The arrangement and method for construction of unit；
S2. reinforcement unit support jig is set up: analyzing applying for identified rack installation reinforcement unit according to construction simulation analysis
Work scheme arranges reinforcement unit support jig supporting point deforming biggish solder sphere region, sets up reinforcement unit support jig；
S3. movable supporting frame is set up: it is setting up reinforcement unit support jig simultaneously, is setting up movable supporting frame as operating platform,
When setting up, movable supporting frame uses a standard column away from for a sliding element, and the operating surface of movable supporting frame is lower than lower edge；
S4. reinforcement unit rack is installed: enterprising in movable supporting frame after having set up reinforcement unit support jig and movable supporting frame
Row unwrapping wire makes lower edge ball node coordinate, and arranges positioning bracket, adjusts absolute altitude；Ball node lower part be arranged interim rest into
The mode of row support slides and unloads the single unit truss of completion by movable supporting frame and installs；When installation, rack is in movement
In bulk to carrying out on support frame, after single span region rack is installed, movable supporting frame is skidded off, then installs second piece of regional network
Frame, and so on until complete the installation of all racks, twisted eventually after first rack bolt ball, after the completion of the welding of solder sphere region,
The temporary support point on movable supporting frame top starts to start to unload to two sides from intermediate position；In movable supporting frame temporary support point
Monitoring point is set after unloading and carries out the monitoring of reinforcement unit installation process；
S5. reinforcement unit unloads by several times: simulating reinforcement unit by professional software and dismantles by several times, and analyzes it to subsequent construction shadow
It rings, formulates optimal gradation unloading arrangement and method for construction, reinforcement unit unload by several times according to the gradation unloading arrangement and method for construction of formulation
Construction is carried, after unloading, it is in bulk to carry out senior middle school outward based on reinforcement unit；
S6. the pre- arch camber of subsequent rack: simulating subsequent rack by professional software and install, and divides the installation deformation of subsequent rack
Analysis, before not unloaded with reinforcement unit subsequent rack installation deformation values be analysis foundation, using deformation values subtract unloading value as
Springing quantum is calculated in the case where interim moulding bed partial relief, subsequent rack pre- arch camber by sequential construction analysis, is formulated
Arch camber arrangement and method for construction carries out pre- arch camber to ball node according to the arch camber arrangement and method for construction of formulation；
S7. subsequent rack installation and installation process monitoring: equally sliding by movable supporting frame with reinforcement unit rack mounting means
It moves and subsequent rack installation is completed in unloading, and every rack is respectively provided with monitoring point after movable supporting frame unloading and carries out installation process
Monitoring；
S8. reinforcement unit is finally unloaded and is monitored: finally being unloaded using gradation, staging to reinforcement unit temporary support moulding bed
It carries, half an hour is waited after every grade of unloading, and repetition measurement monitors rack deformation, next stage is carried out in the case where ensuring safety and is unloaded
It carries, is finally unloaded until completing reinforcement unit.
2. large span rigidity according to claim 1 unevenly mixes rack high altitude bulk method, which is characterized in that in institute
It states step S1 to determine in the reinforcement unit of rack installation, the method for determining the unit truss of suitable quantity temporary support are as follows: applying
When work process simulation is analyzed, after to increase support it is ensured that there is not the case where rod piece overstressing in the operating condition in a manner of analyze it is each
Situation of the installation operating condition after being reinforced using temporary support to rack, until since temporary support is too many, interior welds ball
Deformation is insufficient, and support is caused to be shifted out code requirement, by temporary support moulding bed quantity it is excessive caused by support be shifted out rule
The reinforcement unit that unit truss before model requirement is installed as rack.
3. large span rigidity according to claim 1 unevenly mixes rack high altitude bulk method, which is characterized in that described
During step S2 reinforcement unit support jig is set up, the temporary support moulding bed is using single-point support, gate type support frame, combination shellfish thunder
Frame support or self-control lattice support frame.
4. large span rigidity according to claim 1 unevenly mixes rack high altitude bulk method, which is characterized in that described
During step S2 reinforcement unit support jig is set up, the supporting frame lower part ground for setting up support jig need to have enough carryings
Power.
5. large span rigidity according to claim 1 unevenly mixes rack high altitude bulk method, which is characterized in that described
During step S3 movable supporting frame is set up, the support frame width for the movable supporting frame set up is greater than column away from the operation of movable supporting frame
Face is lower than lower edge 300mm.
6. large span rigidity according to claim 1 unevenly mixes rack high altitude bulk method, which is characterized in that described
During step S3 movable supporting frame is set up, the movable supporting frame is to add certain amount in fixed scaffold lower end and have certain
The fixation scaffold of the scaffold special pulley part of bearing capacity reequips structure, and pulley part is fixed and connected by upright bar and fixed scaffold
It connects, pulley part is evenly distributed in fixed scaffold lower part, and stable sliding rail, pulley part pulley is arranged below movable supporting frame
It is set in sliding rail.
7. large span rigidity according to claim 1 unevenly mixes rack high altitude bulk method, which is characterized in that described
In the installation of step S4 reinforcement unit rack, unit truss installation is used installs every point-supported mode, frame ball and rod member for grid
It installs simultaneously.
8. large span rigidity according to claim 1 unevenly mixes rack high altitude bulk method, which is characterized in that described
In the subsequent rack installation of step S7 and installation process monitoring, subsequent rack supporting point setting is deforming maximum region.
9. large span rigidity according to claim 1 unevenly mixes rack high altitude bulk method, which is characterized in that described
During step S8 reinforcement unit is finally unloaded and monitored, rack unloading is completed using adjusting branch support jack, when unloading
Scale value is drawn on jack, and has special messenger to command the synchronism for guaranteeing unloading.
10. large span rigidity according to claim 9 unevenly mixes rack high altitude bulk method, which is characterized in that institute
Stating step S8 reinforcement unit and finally unloading and monitor further includes after the completion of load shedding, to net when rack is not detached from jack
Frame structure is checked again, is reinforced when necessary.
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| CN112411759A (en) * | 2020-10-28 | 2021-02-26 | 上海二十冶建设有限公司 | Non-full-cloth support large-span steel structure high-altitude bulk accurate assembly method |
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| CN114687558A (en) * | 2022-04-11 | 2022-07-01 | 长江精工钢结构(集团)股份有限公司 | Method for synchronously unloading structure by utilizing sandbox |
| CN114809584A (en) * | 2022-05-11 | 2022-07-29 | 中国建筑第二工程局有限公司 | High-efficiency and high-precision jig frame and net rack assembling method |
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Application publication date: 20191025 |