CN109441128A - A kind of list Pin tubular truss overhead connection construction - Google Patents
A kind of list Pin tubular truss overhead connection construction Download PDFInfo
- Publication number
- CN109441128A CN109441128A CN201811568154.5A CN201811568154A CN109441128A CN 109441128 A CN109441128 A CN 109441128A CN 201811568154 A CN201811568154 A CN 201811568154A CN 109441128 A CN109441128 A CN 109441128A
- Authority
- CN
- China
- Prior art keywords
- truss
- docking
- moulding bed
- temporary support
- operating platform
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses a kind of list Pin tubular truss overhead connection constructions, step are as follows: S1, number of fragments and section length are determined according to design document and tubular truss span and combination construction site condition and form Deepen Design drawing, single Pin tubular truss is subjected to segmented assembly by Deepen Design drawing in the factory；Operating platform is set up in S2, construction site；Operating platform is selected as steel tube frame, standard section of tower crane support, special welding support frame, and carries out bearing capacity and Stability Checking；S3, the segmentation truss of factory process is lifted on operating platform respectively, is closed up the corresponding chord member docking of two sections of truss by cucurbit traction, then carry out docking welding in the air；S4, i.e. one Pin of lifting of one Pin of completion are in place to permanent support, and the segmentation docking of next truss structure is carried out on operating platform；S5, the truss lifting connected will be displaced on permanent support with hanging device again, recycles the above process, the docking, in place until completing all single truss structures.
Description
Technical field
The invention belongs to technical field of building construction, and in particular to a kind of list Pin tubular truss overhead connection construction.
Background technique
Tubular truss steel construction is the one form of them of space structure.This kind of structure type has followed strictly will be outer in building
The moment of flexure that load generates is converted into the rule of axial drawing, pressure, and the moulding of tubular truss steel construction is simple, the spatial extent of application
Greatly.This kind of structure is widely used in the communal facilitys such as gymnasium, terminal, building of waiting, conference and exhibition center.With space structure
The continuous development of application, demand of the China market to space structure continue to increase, and steel construction, which uses, has entered a flourishing hair
The stage of exhibition.Steel Structure Installation construction technology is improved to have become for a necessity and eager thing.Conventional tube truss construction is adopted
With full hall supporting frame is set up, after assembling construction or installation on ground completion list Pin are carried out on frame body, then list Pin lifting is in place.And
The conventional construction method operating condition narrow for many construction sites is not able to satisfy construction needs.
Summary of the invention
The present invention provides a kind of list Pin tubular truss overhead connection construction in view of the shortcomings of the prior art, will be single
Pin tubular truss is assembled into segmentation truss in factory, is transported to scene in due course according to construction speed, by segmentation truss in local support frame
It docks, can achieve rationally using narrow place, and eliminate on-site consolidation place and most Man Tangzhi in the air on body
Support is set up, while site welding quantity is greatly reduced.While reaching raising construction quality, construction cost has both been saved,
The duration has been saved again.
To achieve the goals above, the technical scheme is that
A kind of list Pin tubular truss overhead connection construction, the step of the steps include: the construction are as follows:
S1, number of fragments and section length are determined simultaneously according to design document and tubular truss span and in conjunction with construction site condition
Deepen Design drawing is formed, single Pin tubular truss is subjected to segmented assembly by Deepen Design drawing in the factory；
Operating platform is set up in S2, construction site；Operating platform is selected as steel tube frame, standard section of tower crane supports, is dedicated
Welding bracing frame, and carry out bearing capacity and Stability Checking；
S3, the segmentation truss of factory process is lifted on operating platform respectively, by cucurbit traction by two sections of truss
Corresponding chord member docking is closed up, then carries out docking welding in the air；
S4, i.e. one Pin of lifting of one Pin of completion are in place to permanent support, and the segmentation pair of next truss structure is carried out on operating platform
It connects；
S5, the truss lifting connected will be displaced on permanent support with hanging device again, the above process is recycled, until complete
At the docking of all single truss structures, in place.
As improvement to above-mentioned technical proposal, in step sl, the number of segment of the truss sections is odd number, truss sections
Length is 10~15m.
As improvement to above-mentioned technical proposal, the step S2 is step by step are as follows: the step S2 is step by step are as follows:
S21, operating platform are selected as steel tube frame, standard section of tower crane support, special welding support frame, and are carried
Power and Stability Checking；
S22, according to operating condition, position is set up in different selections with lifting plan, is selected in the axis perpendicular to truss span direction
One end of line is set up, and sets up frame body width can put one or two single truss structure and be advisable；When truss depth is longer
Intermediate temporary support moulding bed is set up in selection among central axes
S23, the scaffolding height of temporary support moulding bed are determining with the lower boom of truss, and it is true to lower 30cm with lower boom absolute altitude
It is fixed；When truss is arc or fold-line-shaped, the height of temporary support moulding bed is adjusted when according to the height of supporting point；Temporary support moulding bed
Rod end support use jacking stress, the surrounding setting safe protective railing and safety net of temporary support moulding bed is interim to prop up
Around support frame and entrance hangs security warning poster；
S24, temporary support moulding bed Support Position be truss lower boom and web member intersection position, installation before according to lower boom
Diameter with steel plate Machining Arc type lip block contact lower boom, with guarantee lower boom will not because forced area is smaller deform by
Damage；
S25, the position of temporary support moulding bed and quantity are configured according to the span, shape, load of truss；Upright bar
Bottom end sets channel steel cushion block, is supported at the top of upright bar with jacking, jacking screw rod sponson must not exceed 150mm.
As improvement to above-mentioned technical proposal, it is segmented on tubular truss and is provided with movable hood type lifting lug, the activity anchor ear
Formula lifting lug is that pipe fitting is fixed on wherein by two halves obvolvent, and two halves anchor ear is connected by screw bolts.
As improvement to above-mentioned technical proposal, in step s3, segmental hoisting sequence are as follows: lifting interlude to behaviour first
Make on platform in place, then to lift by crane one by one on the segmentation truss to operating platform on both sides in place, until docking welding is completed.
As improvement to above-mentioned technical proposal, the step S5 is step by step are as follows:
After S51, two segmentation truss are in place on temporary support moulding bed, traction is installed on the top-bottom chord of two sections of truss
Two sections of truss are closed up rear butt welding weld seam by cucurbit；
S52, the outer end for docking chord member increase setting and claim pipe, increase conical head in the exposed end portion for claiming pipe and guarantee to claim Guan Gengrong
Easily insertion chord member docking.
Compared with prior art, the advantages and positive effects of the present invention are:
Single Pin tubular truss overhead connection construction of the invention, suitable for the installing engineering of a variety of Node In Large-span Pipe Truss,
Generally comprise linear tube truss, arc tubular truss, fold-line-shaped pipe purlin truss.
Specifically list Pin tubular truss overhead connection construction has a characteristic that
1, narrow space is restricted, structure periphery should not set up hanging device, can only be lifted in the venues
Operating condition is applicable in very much.Especially encounter that height of support is inconsistent and support not on the same line when, high-altitude segmented butt tube purlin
The construction method of frame is applicable in very much.
2, segmentation truss docks in the sky does not need to set up full hall support frame, need to only set up part (one or two list Pin
Truss width) small-scale support frame is used in turn as the support of list Pin tubular truss with operating platform, to reach section
About frame body material utilization amount.
3, truss installation at high altitude and installation on ground are changed to batch production segmented assembly, reduce a large amount of site welding work, mentions
The high speed of welding procedure link, reaches and saves duration effect, to improve working efficiency.
4, welding quality is improved, the welding quantity at the scene of reducing largely is welded on factory's completion, and site welding quantity is few,
Weldquality is effectively controlled, weld seam on-site test workload is reduced, more efficient.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is process flow chart of the invention；
Fig. 2 is single Pin tubular truss segmenting principle schematic diagram of the invention；
Fig. 3 is operation of the present invention putting up platform elevational schematic view；
Fig. 4 is tubular truss scheme of installation；
Fig. 5 is that operating platform sets up floor map；
Fig. 6 is the distraction procedure schematic diagram for being segmented truss.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical solution of the present invention is clearly and completely described, it is clear that
Described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the implementation in the present invention
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts are made
Any modification, equivalent substitution, improvement and etc. should all be included in the protection scope of the present invention.
As shown in figures 1 to 6, the present invention provides a kind of list Pin tubular truss overhead connection construction, steps are as follows:
S1, number of fragments and section length are determined simultaneously according to design document and tubular truss span and in conjunction with construction site condition
Deepen Design drawing is formed, single Pin tubular truss is subjected to segmented assembly by Deepen Design drawing in the factory；
Operating platform is set up in S2, construction site；Operating platform is selected as steel tube frame, standard section of tower crane supports, is dedicated
Welding bracing frame, and carry out bearing capacity and Stability Checking；
S3, the segmentation truss of factory process is lifted on operating platform respectively, by cucurbit traction by two sections of truss
Corresponding chord member docking is closed up, then carries out docking welding in the air；
S4, i.e. one Pin of lifting of one Pin of completion are in place to permanent support, and the segmentation pair of next truss structure is carried out on operating platform
It connects；
S5, the truss lifting connected will be displaced on permanent support with hanging device again, the above process is recycled, until complete
At the docking of all single truss structures, in place.
As improvement to above-mentioned technical proposal, in step sl, the number of segment of the truss sections is odd number, truss sections
Length is 10~15m.
As improvement to above-mentioned technical proposal, the step S2 is step by step are as follows: the step S2 is step by step are as follows:
S21, operating platform are selected as steel tube frame, standard section of tower crane support, special welding support frame, and are carried
Power and Stability Checking；
S22, according to operating condition, position is set up in different selections with lifting plan, is selected in the axis perpendicular to truss span direction
One end of line is set up, and sets up frame body width can put one or two single truss structure and be advisable；When truss depth is longer
Intermediate temporary support moulding bed is set up in selection among central axes
S23, the scaffolding height of temporary support moulding bed are determining with the lower boom of truss, and it is true to lower 30cm with lower boom absolute altitude
It is fixed；When truss is arc or fold-line-shaped, the height of temporary support moulding bed is adjusted when according to the height of supporting point；Temporary support moulding bed
Rod end support use jacking stress, the surrounding setting safe protective railing and safety net of temporary support moulding bed is interim to prop up
Around support frame and entrance hangs security warning poster；
S24, temporary support moulding bed Support Position be truss lower boom and web member intersection position, installation before according to lower boom
Diameter with steel plate Machining Arc type lip block contact lower boom, with guarantee lower boom will not because forced area is smaller deform by
Damage；
S25, the position of temporary support moulding bed and quantity are configured according to the span, shape, load of truss；Upright bar
Bottom end sets channel steel cushion block, is supported at the top of upright bar with jacking, jacking screw rod sponson must not exceed 150mm.
As improvement to above-mentioned technical proposal, it is segmented on tubular truss and is provided with movable hood type lifting lug, the activity anchor ear
Formula lifting lug is that pipe fitting is fixed on wherein by two halves obvolvent, and two halves anchor ear is connected by screw bolts.
As improvement to above-mentioned technical proposal, in step s3, segmental hoisting sequence are as follows: lifting interlude to behaviour first
Make on platform in place, then to lift by crane one by one on the segmentation truss to operating platform on both sides in place, until docking welding is completed.
As improvement to above-mentioned technical proposal, the step S5 is step by step are as follows:
After S51, two segmentation truss are in place on temporary support moulding bed, traction is installed on the top-bottom chord of two sections of truss
Two sections of truss are closed up rear butt welding weld seam by cucurbit；
S52, the outer end for docking chord member increase setting and claim pipe, increase conical head in the exposed end portion for claiming pipe and guarantee to claim Guan Gengrong
Easily insertion chord member docking.
Specific operation is one, technological principle
Number of fragments and section length are determined according to design document and tubular truss span and in conjunction with construction site condition, in work
Single Pin tubular truss is subjected to segmented assembly by Deepen Design drawing in factory.Set up operating platform in construction site.By factory process
Segmentation truss is lifted on operating platform respectively, is closed up the corresponding chord member docking of two sections of truss by cucurbit traction, then carry out
Aerial docking welding.Completing a Pin i.e. one Pin of Liftable is just that the segmentation of next truss structure can be carried out on platform to permanent support
Docking.The truss lifting connected will be displaced on permanent support with hanging device again, recycles the above process, it is all until completing
The docking of single truss structure is just.The aerial docking principle of tubular truss segmentation is as shown in Figure 1.
Two, construction technology process and key points for operation
1, key points for operation
1.1, prepare before construction
1.1.1, Deepen Design: generally has the designing unit of corresponding design qualification to original steel knot by construction unit's commission
Structure construction drawing carries out Deepen Design, and Deepen Design content includes tubular truss segmented node content；
1.1.2, segmentation requires: ordinary circumstance provides segmented node and requirement by Deepen Design unit, and design does not provide point
When section design requirement, segmented content can be worked out in special construction plan please design review.
1.1.3, truss sections generally require: not at truss span centre heart location segment (moment of flexure stress maximum), leaning on
Nearly support root segment (shear stress maximum), up and down, left and right chord member gap cannot on same section (weak location weight
It is folded).The number of segment of truss sections is generally odd number, and truss sections length is generally advisable with 10-15m.
1.1.4, special construction plan: unit in charge of construction according to Deepen Design documentation have specific aim, safety it is special
Item safe construction scheme.
1.1.5, the built-in fitting of permanent support is measured, checks whether the coordinate of built-in fitting and absolute altitude meet design
It is required that；Displacement of the measurement content comprising support built-in fitting, absolute altitude, flatness, built-in fitting displacement error≤10mm, absolute altitude error≤
0~-3mm, horizontal error≤L/1000 (horizontal error formed inclination angle and 1 ° of ﹤).
1.1.6, live Farm Planning chooses the stacking place of scene segmentation tubular truss.
1.1.7, corresponding security protection appliances for labor protection are equipped with, safety belt, catching device, level of security blanket net, is expired at safety rope
Hall frame steel pipe, flitch, scaffold board.
1.1.8, material sampling examination work of marching into the arena the testing of materials: should be carried out before truss installa-tion；Every kind of rod piece takes a sample test 5%,
And no less than 5.The rod piece sampling batch unfavorable to stress should be a batch by same specification rod piece 300, and every batch of randomly selects 3
It is one group, less than 300 based on a batch, carries out the performance test of puller system in the complete test mechanism of qualification, mechanical property is answered
Meet design requirement.Rod piece straightness check criteria: axis unflatness ﹤ L/1000 and be not more than 5mm.
Rod piece should have the exfactory inspection quality certification, laboratory report or carry out the lossless inspection of ultrasonic wave in the ratio of code requirement
It surveys.
2, temporary support moulding bed is set up
2.1, temporary support moulding bed sets up form: temporary support moulding bed choosing multiple form, and steel tube frame may be selected
(fastener type, bowl fastening type), standard section of tower crane support (operating platform is set up in cooperation), special welding support frame etc.；According to live feelings
The suitable support frame form of condition difference selection, support frame must do bearing capacity and Stability Checking in special scheme, after satisfaction
It can implement.
2.2, temporary support moulding bed sets up position: since the temporary support moulding bed set up is local support frame, temporary support
The position of moulding bed is very crucial.According to operating condition and lifting plan it is different select the positions set up also different, temporary support moulding bed
The one end being typically chosen in perpendicular to the central axes in truss span direction is set up, and sets up frame body width generally can put
One or two single truss structure is advisable (width that must increase operating platform).It may be selected in when truss depth (central axes) is longer
Temporary support moulding bed is set up among axis.
2.3, the erection method of temporary support moulding bed, parameter, requirement should be incorporated into truss special construction plan, and through unit
Person in charge of the technology aspect's examination & approval, as scaffolding height be more than 8 meters or truss installa-tion span be more than 36 meters must organizes experts demonstration, prove satisfaction
It is required that rear is implementable.
2.4, temporary support moulding bed should be by the requirement of " construction temporary support structure technical specification " JGJ300-2013
It is configured frame body parameter and establishment related technical measures.The design parameter of supporting frame must be by calculating, and parameters should expire
Foot requires just implementable.Upright bar must be by concentrated force computational stability under the corresponding supporting point of the load of truss.
2.5, the scaffolding height of temporary support moulding bed is determined with the lower boom of truss, generally lowers 30cm with lower boom absolute altitude
It is advisable.When truss is arc or fold-line-shaped, temporary support moulding bed height is adjusted when according to the height of supporting point.Temporary support moulding bed
Rod end support must use jacking stress, and safe protective railing and safety net, frame body will be arranged in temporary support moulding bed surrounding
Surrounding and entrance hang security warning poster.It should organize to carry out frame body special examination before truss lifting.Acceptance criteria according to
" construction temporary support structure technical specification " JGJ300-2013 acceptance criteria executes.
2.6, the Support Position of temporary support moulding bed be truss lower boom and web member intersection position, should be according to lower edge before installation
Shank diameter contacts lower boom with steel plate Machining Arc type lip block, to guarantee that lower boom will not be deformed because forced area is smaller
It is impaired.
2.7, the position of temporary support moulding bed and quantity are set according to the span, shape, load etc. of truss
It sets.
2.8, temporary support moulding bed is typically designed construction measure: upright bar bottom end sets channel steel cushion block, jacking branch at the top of upright bar
Support, jacking screw rod sponson must not exceed 150mm.
Three, it lifts
3.1, hanging device selects: the characteristics of lifting construction is also this construction, lifting can only select separate unit to lift
Equipment operation；Hoisting engineering is divided into two steps in the construction technology of this engineering method, and the first step is that segmentation truss lifting is propped up to interim
In place on support frame, second step be that single truss structure after docking lifts by crane from support jig and is displaced to permanent support.
3.2, suspension centre is arranged: the setting reply truss of suspension centre does lifting Stability Checking Calculation, answers reasonable Arrangement hoisting point position or adopts
With reinforcement measure, guarantee in hoisting process that truss unstability and does not prevent suspension centre from deforming.
3.3, load must not exceed equipment rated load weight when selecting separate unit lifting equipment according to the load for playing hanging object
80%.
3.4, special component stockyard should be arranged in tubular truss component at the scene, and area is taken to prevent the deformation of member and surface dirty
The safeguard measure of dye, such as stacks and high cushion block is arranged below component, and surface covers rain-proof fabric.
3.5, component stacking should be ranked up stacking according to the sequence of construction of arrangement and method for construction, to reduce rehandling and move
It causes to damage.Pile is neat, and binding wants solid and reliable.
3.6, provide according to " structural steelwork job specfication " GB50755-2012 11.1.7 item: the segmentation of steel construction with
Lifting lug is preferably arranged in whole Pin lifting on component, and lifting lug is using welding.Truss pipe fitting is damaged to reduce, is adopted in this application of construction method
With movable hood type lifting lug；Movable anchor ear lifting lug carries out factory process production according to the pipe fitting diameter of installation amplexis, and anchor ear is hung
Ear is that pipe fitting is fixed on wherein by two halves obvolvent, and two halves anchor ear is connected by screw bolts.The rapidoprint size and bolt of lifting lug are big
Small to be calculated according to lifting load, meeting the requirements can use.
3.7, segmental hoisting sequence: it is in place on lifting interlude to temporary support moulding bed first, both sides are then lifted by crane one by one
Segmentation truss to temporary support moulding bed on it is in place, until docking welding is completed.
3.8, the docking construction of list Pin tubular truss the lifting displacement after the completion of single truss structure docking: is completed on temporary support moulding bed
Afterwards, whole truss structure need to be lifted by crane from temporary support moulding bed and is displaced to corresponding permanent support.Hanging method is to use single crane
Lifting, single truss structure on temporary support moulding bed is hung temporary support moulding bed by crane, according to the route designed in arrangement and method for construction
It is slowly moved at permanent support and installs in place.Docking assembling truss and whole Pin displacement are intended to carry out in strict accordance with preset order.
Four, segmentation chord member of truss traction docking
4.1, it draws: after two segmentation truss are in place on temporary support moulding bed, pacifying on the top-bottom chord of two sections of truss
Two sections of truss are closed up rear butt welding weld seam by dress traction cucurbit.
Towage points for attention: requiring the stroke of stringent monitoring or more, left and right drawbar member consistent in towage,
Such as finding that any chord member stops advancing will stop drawing and checking Caton failure immediately, could implement to lead again after debugging
Draw.
4.2, docking chord member must increase title pipe, increase by design requirement.This engineering method guarantees two sections of strings in exemplary application
Bar smoothly docks, and increases conical head in the exposed end portion for claiming pipe and guarantees that pipe is claimed to be easier insertion chord member docking.
4.3, wherein one section lighter of segmentation truss can slide slightly on frame body when docking traction, this section of truss can with hang
Installing is standby not to break off relations, which is above mentioned slightly, so that lifting wirerope is in tight state, after drawing in place, in place
It breaks off relations.
Five, it welds
The main connection type of tubular truss installation is that welding, especially on-the-spot welding are that quality control is crucial.Welding procedure
The following main points of strict implement:
1, solder technologist should have corresponding qualification certificates.
2, weld seam nondestructive testing personnel should obtain national profession examination grading certificate, and the inspection that can only be engaged in certificate authority
Survey work.
3, welding procedure qualification test should be done according to the content of design document before welding.
4, when welding, the temperature of operating environment, relative humidity, wind speed should meet wanting for " structural steelwork job specfication "
It asks.
Six, material and plant
Seven, quality controls
7.1, the engineering method is in accordance with " structural steelwork job specfication " GB50755-2012, " welding for steel structure specification "
GB50661-2011, " structural steelwork construction and acceptance specification " GB50205-2001.
7.2, require built-in fitting surface cleaning, axis and absolute altitude and geometric dimension accurate embedded part control.
7.3, weld appearance quality should be met the following requirements
7.3.1, first-order weld must not have the defects of incompletely filling, root is shunk, undercut and connector are bad, first-order weld and
Second-order weld must not have the defects of surface pores, slag inclusion, crackle and arc scratch.
7.3.2, the presentation quality of second-order weld should still meet the related of following table in addition to it should meet the requirement of this first item
Regulation.
7.3.3, the inspection of the weld seam of design requirement complete penetraction and fusion in welding, internal defects should be met the following requirements:
1, first-order weld should carry out 100% inspection, and qualified grade should be existing national standards, and " steel weld seam is ultrasonic by hand
Wave inspection method and quality grading method " II grade and II grade or more of (GB 11345) B level testing.
2, second-order weld should be inspected by random samples, and sampling observation ratio should be not less than 20%, and qualified grade should be existing national standards
III grade and III grade or more of " steel weld seam manual ultrasonic method of detection and quality grading method " (GB 11345) B level testing.
3, the three-level weld seam of complete penetraction and fusion in welding can be without non-destructive testing.
7.4, tolerance
7.4.1, basis, supporting surface, built-in fitting examination tolerance value should meet table 5.2.6-1 (unit mm)
1, the general weld seam of truss construction is full penetration groove weld, and the weld reinforcement of full penetration weld banjo fixing butt jointing should meet
Table 7.4.2-1 banjo fixing butt jointing weld reinforcement
Table 7.4.2-1 banjo fixing butt jointing weld reinforcement tolerance table
2, the presentation quality of three-level weld seam should meet following table pertinent regulations
7.4.3 truss processing steel tube member bar processing tolerance value see Table 7 for details .4.3-1
Table 7.4.3-1
| Project | Tolerance |
| Length | ±1.0 |
| Verticality of the end face to pipe axis | 0.005r |
| Nozzle curve | 1.0 |
Note: r indicates radius
Eight, safety measure
8.1, before Construction of Steel Structure, construction safety, environmental protection special scheme and safe emergency preplan should be worked out.
8.2, when constructing, operating personnel's offer is provided and meets qualification labour protection use as defined in the existing related standard of country
Product, and should train and to supervise operating personnel proper use of.
8.3, after temporary support moulding bed is set up, work layer scaffold board should be completely spread in time and hangs safety net.
Safety net is generally made of dictyosome, side rope, tether etc..Safety net is divided into two class of big eye net and Dense mesh screen, big eye net
As horizontal blanket net, setting horizontal blanket net protection together, is set every 10m downwards at the horizon bar of the work layer next step of frame body
Horizontal blanket net protection together is set, Dense mesh screen, which is used as to stand, nets full hang.
8.4, after the completion of frame body is set up, protective fence is arranged in the side Ying Lin, and protective fence height is not lower than 1.2m.
The tubing of 48.3 × 3.6mm of Φ can be used in steel pipe railing and column for facing side operation protection, with fastener or weldering
Connect fixation.Guard rail is set up using steel tube fastener, and equipped formula railing can also be used.Guard rail is by bar of sweeping the floor, cross bar, handrail
And column composition, bar of sweeping the floor is liftoff 200mm, railing terrain clearance are 0.5~0.6m, handrail terrain clearance is 1.1m, and column is not by
It is arranged greater than 2m.
8.5, when meeting the bad weathers such as strong wind, heavy rain, construction operation should not be carried out, it is desirable that stop construction immediately, and in time
Check the stabilization and electromechanical equipment of frame body, it is ensured that safety.
8.6, prohibit against alcoholic drinks after operation, forbid to go to work braving one's illness.
Nine, environmental protection measure
9.1, keep the mode of cleaned in situ mainly to have in construction: the stacking and storage made rational planning for control member add
Supervisor's dynamics of strong scene civilized construction, the stacking of specification building waste simultaneously clear up in time, are handled and sprinkled water by hardened ground
Etc. means control live fugitive dust etc..
9.2, forbid the stool and urine in building site, accomplish construction site and living area sanitation and hygiene.
Ten, performance analysis
10.1 social benefits
The tubular truss segmentation docking assembling operation of the engineering method docks construction on supporting frame qualified by inspection, not only drops
Low security risk, and effectively increase the construction quality of weld job.Truss is in installation on ground at segmentation, amount of high-altitude operation
Reduce, substantially increases speed of application, it is ensured that the duration.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one implementation of the invention
In example or example.In the present specification, schematic expression of the above terms may not refer to the same embodiment or example.
Moreover, particular features, structures, materials, or characteristics described can be in any one or more of the embodiments or examples to close
Suitable mode combines.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.There is no detailed for preferred embodiment
All details are described, are not limited the invention to the specific embodiments described.Obviously, according to the content of this specification,
It can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to better explain the present invention
Principle and practical application, so that skilled artisan be enable to better understand and utilize the present invention.The present invention is only
It is limited by claims and its full scope and equivalent.
Claims (6)
1. a kind of list Pin tubular truss overhead connection construction, it is characterised in that: the step of the construction are as follows:
S1, number of fragments and section length are determined according to design document and tubular truss span and combination construction site condition and formed
Single Pin tubular truss is carried out segmented assembly by Deepen Design drawing in the factory by Deepen Design drawing；
Operating platform is set up in S2, construction site；Operating platform is selected as steel tube frame, standard section of tower crane support, special welding
Support frame, and carry out bearing capacity and Stability Checking；
S3, the segmentation truss of factory process is lifted on operating platform respectively, by cucurbit traction by the corresponding of two sections of truss
Chord member docking is closed up, then carries out docking welding in the air；
S4, i.e. one Pin of lifting of one Pin of completion are in place to permanent support, and the segmentation docking of next truss structure is carried out on operating platform；
S5, the truss lifting connected will be displaced on permanent support with hanging device again, recycles the above process, until completing institute
There is the docking, in place of single truss structure.
2. list Pin tubular truss overhead connection construction according to claim 1, which is characterized in that in step sl, institute
The number of segment of truss sections is stated as odd number, truss sections length is 10~15m.
3. list Pin tubular truss overhead connection construction according to claim 1, which is characterized in that point of the step S2
Step are as follows:
S21, operating platform be selected as steel tube frame, standard section of tower crane support, special welding support frame, and carry out bearing capacity and
Stability Checking；
S22, according to operating condition, position is set up in different selections with lifting plan, is selected in the central axes perpendicular to truss span direction
One end is set up, and sets up frame body width can put one or two single truss structure and be advisable；It is selected when truss depth is longer
Intermediate temporary support moulding bed is set up among central axes
S23, the scaffolding height of temporary support moulding bed are determining with the lower boom of truss, lower 30cm with lower boom absolute altitude and determine；Purlin
When frame is arc or fold-line-shaped, the height of temporary support moulding bed is adjusted when according to the height of supporting point；Temporary support moulding bed is stood
Bar apical support uses jacking stress, the surrounding setting safe protective railing and safety net of temporary support moulding bed, temporary support tire
Around frame and entrance hangs security warning poster；
S24, temporary support moulding bed Support Position be truss lower boom and web member intersection position, installation before according to lower edge shank diameter
With steel plate Machining Arc type lip block contact lower boom, with guarantee lower boom will not because forced area is smaller deform be damaged；
S25, the position of temporary support moulding bed and quantity are configured according to the span, shape, load of truss；Upright bar bottom end
If channel steel cushion block, supported at the top of upright bar with jacking, jacking screw rod sponson must not exceed 150mm.
4. list Pin tubular truss overhead connection construction according to claim 3, which is characterized in that set on segmentation tubular truss
It is equipped with movable hood type lifting lug, which is that pipe fitting is fixed on wherein by two halves obvolvent, and two halves anchor ear uses spiral shell
It tethers and connects.
5. list Pin tubular truss overhead connection construction according to claim 1, which is characterized in that in step s3, point
Section lifting sequence are as follows: it is in place on lifting interlude to operating platform first, the segmentation truss on both sides is then lifted by crane one by one to operating
It is in place on platform, until docking welding is completed.
6. list Pin tubular truss overhead connection construction according to claim 1, which is characterized in that point of the step S5
Step are as follows:
After S51, two segmentation truss are in place on temporary support moulding bed, the installation traction calabash on the top-bottom chord of two sections of truss
Two sections of truss are closed up rear butt welding weld seam by reed；
S52, the outer end for docking chord member increase setting and claim pipe, increase conical head in the exposed end portion for claiming pipe and guarantee that pipe is claimed to be easier to insert
Enter chord member docking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811568154.5A CN109441128A (en) | 2018-12-21 | 2018-12-21 | A kind of list Pin tubular truss overhead connection construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811568154.5A CN109441128A (en) | 2018-12-21 | 2018-12-21 | A kind of list Pin tubular truss overhead connection construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109441128A true CN109441128A (en) | 2019-03-08 |
Family
ID=65558625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811568154.5A Pending CN109441128A (en) | 2018-12-21 | 2018-12-21 | A kind of list Pin tubular truss overhead connection construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109441128A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110259145A (en) * | 2019-06-28 | 2019-09-20 | 中冶建工集团有限公司 | A kind of arch tubular truss rapid constructing method |
| CN111519911A (en) * | 2020-05-06 | 2020-08-11 | 中铁建设集团北京工程有限公司 | Construction method for mounting lower pipeline of steel truss |
| CN111851744A (en) * | 2020-07-15 | 2020-10-30 | 安徽省工业设备安装有限公司 | Air butt joint hoisting method for large-span pipe truss |
| CN112227733A (en) * | 2020-10-30 | 2021-01-15 | 中冶建工集团重庆钢结构有限公司 | Installation method of three-way pipe truss |
| CN112878699A (en) * | 2019-11-29 | 2021-06-01 | 中冶(上海)钢结构科技有限公司 | Construction method for butting pipe truss with steel casting tongue-and-groove branch pipe during hoisting of pipe truss |
| CN112878698A (en) * | 2019-11-29 | 2021-06-01 | 中冶(上海)钢结构科技有限公司 | Construction method for separately installing pipe truss and steel casting and sliding for aligning |
| CN113102923A (en) * | 2021-04-21 | 2021-07-13 | 中国十七冶集团有限公司 | Method for air butt joint of straight elbow pipe and straight pipe of medium-small pipe diameter long transmission line |
| CN114075873A (en) * | 2020-08-17 | 2022-02-22 | 北京城建轨道交通建设工程有限公司 | Construction method of large-load column-free arc-shaped top plate structure |
| CN115324360A (en) * | 2022-07-27 | 2022-11-11 | 成都建工第四建筑工程有限公司 | Construction method of large-span suspended truss |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0882100A (en) * | 1994-09-08 | 1996-03-26 | Takenaka Komuten Co Ltd | Lift-up method for constructing catwalk |
| KR20090050258A (en) * | 2007-11-15 | 2009-05-20 | 박동원 | The upper part of truss dismantling device and method |
| CN105332515A (en) * | 2015-10-29 | 2016-02-17 | 中冶建工集团有限公司 | Erection method of large-span truss structure in limited space |
| CN105604334A (en) * | 2016-01-18 | 2016-05-25 | 中铁三局集团有限公司 | Rapid-construction method used for overall installation of large-span steel truss |
| CN207873541U (en) * | 2018-02-27 | 2018-09-18 | 中建五局工业设备安装有限公司 | Large-diameter pipeline hydraulic lifting pairing device |
-
2018
- 2018-12-21 CN CN201811568154.5A patent/CN109441128A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0882100A (en) * | 1994-09-08 | 1996-03-26 | Takenaka Komuten Co Ltd | Lift-up method for constructing catwalk |
| KR20090050258A (en) * | 2007-11-15 | 2009-05-20 | 박동원 | The upper part of truss dismantling device and method |
| CN105332515A (en) * | 2015-10-29 | 2016-02-17 | 中冶建工集团有限公司 | Erection method of large-span truss structure in limited space |
| CN105604334A (en) * | 2016-01-18 | 2016-05-25 | 中铁三局集团有限公司 | Rapid-construction method used for overall installation of large-span steel truss |
| CN207873541U (en) * | 2018-02-27 | 2018-09-18 | 中建五局工业设备安装有限公司 | Large-diameter pipeline hydraulic lifting pairing device |
Non-Patent Citations (2)
| Title |
|---|
| 吴成村: ""某体育场馆钢结构屋盖安装方案探讨"", 《福建建材》 * |
| 翟瑞海: ""屋面大跨度钢管桁架现场拼装整体吊装施工技术"", 《施工技术》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110259145A (en) * | 2019-06-28 | 2019-09-20 | 中冶建工集团有限公司 | A kind of arch tubular truss rapid constructing method |
| CN112878699A (en) * | 2019-11-29 | 2021-06-01 | 中冶(上海)钢结构科技有限公司 | Construction method for butting pipe truss with steel casting tongue-and-groove branch pipe during hoisting of pipe truss |
| CN112878698A (en) * | 2019-11-29 | 2021-06-01 | 中冶(上海)钢结构科技有限公司 | Construction method for separately installing pipe truss and steel casting and sliding for aligning |
| CN111519911A (en) * | 2020-05-06 | 2020-08-11 | 中铁建设集团北京工程有限公司 | Construction method for mounting lower pipeline of steel truss |
| CN111851744A (en) * | 2020-07-15 | 2020-10-30 | 安徽省工业设备安装有限公司 | Air butt joint hoisting method for large-span pipe truss |
| CN114075873A (en) * | 2020-08-17 | 2022-02-22 | 北京城建轨道交通建设工程有限公司 | Construction method of large-load column-free arc-shaped top plate structure |
| CN114075873B (en) * | 2020-08-17 | 2023-10-27 | 北京城建轨道交通建设工程有限公司 | Construction method of large-load column-free arc-shaped roof structure |
| CN112227733A (en) * | 2020-10-30 | 2021-01-15 | 中冶建工集团重庆钢结构有限公司 | Installation method of three-way pipe truss |
| CN113102923A (en) * | 2021-04-21 | 2021-07-13 | 中国十七冶集团有限公司 | Method for air butt joint of straight elbow pipe and straight pipe of medium-small pipe diameter long transmission line |
| CN115324360A (en) * | 2022-07-27 | 2022-11-11 | 成都建工第四建筑工程有限公司 | Construction method of large-span suspended truss |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109441128A (en) | A kind of list Pin tubular truss overhead connection construction | |
| CN105507600A (en) | Hoisting system and hoisting construction method for large steel corridor trusses | |
| CN105332452B (en) | Cable curtain wall supporting system and its construction method of a kind of top provided with steel truss | |
| CN108179868B (en) | Air construction platform device based on steel structure overhanging special-shaped curtain wall | |
| CN105926764B (en) | A kind of industrialization preprocessing regenerative structural system and its construction method | |
| CN102912972B (en) | Multifunctional lifting steel platform switching jig and construction method | |
| CN114439249B (en) | Construction method for lifting large-span triangular truss through air swivel | |
| CN103643800A (en) | Lifting installation system for buckling restrained supporting member and construction method thereof | |
| CN112695952B (en) | Building roof truss support structure and construction method | |
| CN114033051A (en) | Large-span hyperbolic truss construction process based on steel structure spherical curtain cinema engineering | |
| CN115341653B (en) | Steep gentle slope radian abrupt change multi-curved-surface steel reticulated shell building structure and construction process thereof | |
| CN114775882B (en) | Membrane-stainless steel-aluminum alloy-inhaul cable combined structure | |
| CN201460242U (en) | Assembly jig frame with net rack structure | |
| CN115467421A (en) | Hoisting construction method for complex large-span steel roof | |
| CN108643572A (en) | Concrete crossbeam support, shellfish thunder platform construction and steel strand wires combined installation method | |
| CN206308988U (en) | Tool-type combination construction pylon | |
| CN106088399A (en) | A kind of installation method of multi-cavity steel column shear wall combined structure building system | |
| CN114837483B (en) | High-low span portal steel frame building structure and construction process thereof | |
| CN114941433B (en) | Construction method of high-weight ship type daylighting roof steel structure | |
| CN202913677U (en) | Multifunctional conversion scaffold capable of lifting steel platform | |
| CN207749859U (en) | A kind of trestle support system for structure floor operation in Large-scale Hoisting equipment | |
| CN111980191A (en) | Construction method of building shock absorption connecting beam type soft steel damper installation system | |
| Jones et al. | Essential Elements | |
| CN113494129A (en) | Single-hook type manual butt joint steel framework | |
| CN110805256A (en) | Construction process of flower basket pull rod tool type overhanging scaffold |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190308 |