CN109750845A - Installation on ground method for open-type plane girder - Google Patents
Installation on ground method for open-type plane girder Download PDFInfo
- Publication number
- CN109750845A CN109750845A CN201711091829.7A CN201711091829A CN109750845A CN 109750845 A CN109750845 A CN 109750845A CN 201711091829 A CN201711091829 A CN 201711091829A CN 109750845 A CN109750845 A CN 109750845A
- Authority
- CN
- China
- Prior art keywords
- truss
- free end
- open
- grid
- installation
- 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
Abstract
The invention discloses a kind of installation on ground method for open-type plane girder, this method, in the assembled moulding bed of ground setting and by the free end anchor point for being placed in each unit rod piece by grid, forms moulding bed and the composite assembly loose tool by grid according to truss drawing；On rod piece tire and assemble it is fixed after check the geometric accuracy of truss, confirm it is errorless after carry out rod piece welding, meanwhile, each unit rod free end is connect with grid spot welding is leaned on；The positioning accuracy of the geometric accuracy of repetition measurement confirmation truss and each unit rod free end, completes the installation on ground of open-type plane girder after welding.This method overcomes the defect of open truss installation on ground, the position error of truss opening rod free end is avoided, to facilitate the overhead connection operation of truss, it is ensured that truss uses function and appearance, reduces the security risk of high altitude operation.
Description
Technical field
The present invention relates to a kind of installation on ground methods for open-type plane girder.
Background technique
When open-type plane girder installation on ground, truss open end rod free end is reliably connected due to location difficulty because of nothing,
The deviations of usual rod free end are larger after assembly, the rod piece fixing end deviation often further expansion after weld formation,
Truss is caused to need to correct rod piece using external force such as chain block or jack in overhead connection, when deviation can not be complete
Portion the defects of or misalignment wide to interface weld seam will occur when eliminating, so that truss is affected using function and appearance；
High-altitude truss butt-joint operation amount is increased simultaneously, and brings high-altitude safe operating risk, improves truss installa-tion operating cost, is reduced
Truss installa-tion operating efficiency.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of installation on ground methods for open-type plane girder, originally
Method overcomes the defect of truss installation on ground, avoids the position error of truss open end rod free end, to facilitate truss
Overhead connection operation, it is ensured that truss uses function and appearance, reduces the security risk of high altitude operation.
In order to solve the above technical problems, the present invention includes following step for the installation on ground method of open-type plane girder
It is rapid:
Step 1: assembled moulding bed is arranged on ground, is selected according to the diameter of opening rod piece according to open-type plane girder design drawing
It selects matched by grid, and will be placed in by grid at the free end anchor point of each unit rod piece, form assembled moulding bed and by grid
Composite assembly loose tool；
Step 2: each unit rod piece is placed in composite assembly loose tool and assembles the geometric accuracy of check truss after fixation, confirmation
The welding of each unit rod piece is carried out after errorless, meanwhile, each unit rod free end is connect with by grid spot welding；
Step 3: repetition measurement confirms the geometric accuracy of truss and the positioning accuracy of each unit rod free end after welding, cut off
Each unit rod free end and being fixed temporarily a little by grid, complete the installation on ground of open-type plane girder.
Further, it is described by grid be length and the matched pipe fitting of truss Opening length.
Further, the tube wall of the pipe fitting, which is equipped with, passes through opening, each unit rod piece with the matched phase of each unit rod free end
Free end is mutually passed through opening spot welding with this and is connect.
Due to the present invention for open-type plane girder installation on ground method use above-mentioned technical proposal, i.e., this method according to
Assembled moulding bed is arranged on ground in truss drawing, and will be placed at the free end anchor point of each unit rod piece by grid, forms moulding bed
With the composite assembly loose tool for leaning on grid；On rod piece tire and assemble it is fixed after check the geometric accuracy of truss, confirm errorless laggard
The welding of row rod piece, meanwhile, each unit rod free end is connect with by grid spot welding；The geometric dimension essence of repetition measurement confirmation truss after welding
The positioning accuracy of degree and each unit rod free end completes the installation on ground of open-type plane girder.This method overcomes opening purlin
The defect of frame installation on ground, avoids the position error of truss open end rod free end, so that the overhead connection of truss be facilitated to make
Industry, it is ensured that truss uses function and appearance, reduces the security risk of high altitude operation.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:
Fig. 1 is the installation on ground method schematic diagram that the present invention is used for open-type plane girder；
Fig. 2 is the truss high-altitude scheme of installation using this method assembly.
Specific embodiment
Embodiment is as shown in Figure 1, installation on ground method of the present invention for open-type plane girder includes the following steps:
Step 1: assembled moulding bed is arranged on ground, according to the straight of opening rod piece 11 according to 1 design drawing of open-type plane girder
Diameter selects matched by grid 2, and will be placed at the free end anchor point of each unit rod piece 11 by grid 2, and form assembled tire
Frame and composite assembly loose tool by grid；
Step 2: each unit rod piece 11 is placed in composite assembly loose tool and assembles the geometric accuracy of check truss 1 after fixation, really
Recognize the errorless rear each unit rod piece 11 that carries out to weld, meanwhile, 11 free end of each unit rod piece is connect with by 2 spot welding of grid；
Step 3: repetition measurement confirms the positioning accuracy of 11 free end of geometric accuracy and each unit rod piece of truss 1 after welding, cut
Except 11 free end of each unit rod piece and being fixed temporarily a little by grid 2, the installation on ground of open-type plane girder 1 is completed.
Preferably, it is described by grid 2 be length and the matched pipe fitting of 1 Opening length of truss.
Preferably, the tube wall of the pipe fitting, which is equipped with, passes through opening 21, each unit with the matched phase in 11 free end of each unit rod piece
11 free end of rod piece is mutually passed through 21 spot welding of opening with this and is connect.
As shown in Fig. 2, by the lifting of open-type plane girder 1 using this method assembly to high-altitude structure column 3, each list of truss
First 11 free end of rod piece can coincide with the installation node 31 of high-altitude structure column 3, to avoid using chain block or jack pair
Unit rod piece 11 is corrected, it is ensured that the high-level installation of truss is in place, saves the manpower and material resources cost of truss installa-tion.
This method by grid by positioning, the whole splicing accuracy of truss of guarantee and the positioning accuracy of rod free end, from
And reduce truss high-altitude and adjustment time and workload in place are installed, the security risk that high altitude operation is brought is reduced, truss is improved
The efficiency of high-altitude installation, and this method is implemented simply, and reusable by grid, the installation of truss high-altitude is in place accurate, drops significantly
Low construction cost, it is ensured that truss uses function and appearance.
Claims (3)
1. a kind of installation on ground method for open-type plane girder, it is characterised in that this method includes the following steps:
Step 1: assembled moulding bed is arranged on ground, is selected according to the diameter of opening rod piece according to open-type plane girder design drawing
It selects matched by grid, and will be placed in by grid at the free end anchor point of each unit rod piece, form assembled moulding bed and by grid
Composite assembly loose tool；
Step 2: each unit rod piece is placed in composite assembly loose tool and assembles the geometric accuracy of check truss after fixation, confirmation
The welding of each unit rod piece is carried out after errorless, meanwhile, each unit rod free end is connect with by grid spot welding；
Step 3: repetition measurement confirms the geometric accuracy of truss and the positioning accuracy of each unit rod free end after welding, cut off
Each unit rod free end and being fixed temporarily a little by grid, complete the installation on ground of open-type plane girder.
2. the installation on ground method according to claim 1 for open-type plane girder, it is characterised in that: described to lean on grid
It is length and the matched pipe fitting of truss Opening length.
3. the installation on ground method according to claim 2 for open-type plane girder, it is characterised in that: the pipe fitting
Tube wall be equipped with and pass through opening with the matched phase of each unit rod free end, each unit rod free end mutually passes through the spot welding company that is open with this
It connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711091829.7A CN109750845A (en) | 2017-11-08 | 2017-11-08 | Installation on ground method for open-type plane girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711091829.7A CN109750845A (en) | 2017-11-08 | 2017-11-08 | Installation on ground method for open-type plane girder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109750845A true CN109750845A (en) | 2019-05-14 |
Family
ID=66402058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711091829.7A Pending CN109750845A (en) | 2017-11-08 | 2017-11-08 | Installation on ground method for open-type plane girder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109750845A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111779286A (en) * | 2020-07-24 | 2020-10-16 | 中冶建工集团重庆钢结构有限公司 | Construction method for assembling planar truss on site |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116051A (en) * | 2009-12-30 | 2011-07-06 | 上海市机械施工有限公司 | Layer-by-layer overhanging structure lifting method |
| CN102505864A (en) * | 2011-12-29 | 2012-06-20 | 上海市机械施工有限公司 | Method for assembling fixed ends of scaffold of large-volume triangular variable-section tubular truss structure |
| CN102839747A (en) * | 2012-09-24 | 2012-12-26 | 中国建筑第八工程局有限公司 | Construction method for steel structure truss of super high-rise special structure |
| CN203034821U (en) * | 2012-11-14 | 2013-07-03 | 中冶天工集团有限公司 | Large-span arched inverted-triangular pipe truss assembly integral mould |
-
2017
- 2017-11-08 CN CN201711091829.7A patent/CN109750845A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116051A (en) * | 2009-12-30 | 2011-07-06 | 上海市机械施工有限公司 | Layer-by-layer overhanging structure lifting method |
| CN102505864A (en) * | 2011-12-29 | 2012-06-20 | 上海市机械施工有限公司 | Method for assembling fixed ends of scaffold of large-volume triangular variable-section tubular truss structure |
| CN102839747A (en) * | 2012-09-24 | 2012-12-26 | 中国建筑第八工程局有限公司 | Construction method for steel structure truss of super high-rise special structure |
| CN203034821U (en) * | 2012-11-14 | 2013-07-03 | 中冶天工集团有限公司 | Large-span arched inverted-triangular pipe truss assembly integral mould |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111779286A (en) * | 2020-07-24 | 2020-10-16 | 中冶建工集团重庆钢结构有限公司 | Construction method for assembling planar truss on site |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102979319B (en) | A kind of method of stiffening frame node | |
| CN110258803A (en) | A kind of dome steel structure construction method of installation based on BIM technology | |
| CN101440667A (en) | Mounting method for wide span single layer rain shed reticulated shell structure | |
| CN101691797B (en) | Method for manufacturing roofing truss | |
| KR101669441B1 (en) | Hinge joint of steel pipe truss structure, steel pipe truss structure therewith and the steel pipe truss structure construction method therefor | |
| CN103821372A (en) | Method for installing trusses with different heights | |
| CN109750845A (en) | Installation on ground method for open-type plane girder | |
| CN103264968A (en) | Super high-rise core tube internal and external hanging tower crane support beam structure and construction method thereof | |
| CN109505266A (en) | A kind of sleeping splicing method in the scene of tubular arch | |
| CN106168068A (en) | A kind of constructional column joint bar, tension rib joint bar locating mounting method | |
| CN208220180U (en) | The screw connection of steel pipe docking for building | |
| CN203145481U (en) | Manufacturing and positioning device of variable-angle steel pipe column splicing ear plate | |
| CN206289748U (en) | A kind of high strength steel attachment structure | |
| CN107740585B (en) | Hanging installation method for ultra-long inclined steel structure circular pipe | |
| CN107012951A (en) | The connecting joint structure and method of main couple and jack truss in space tube truss | |
| US11148218B2 (en) | Method for welding steel pipe in steel pipe structure and joint | |
| CN102061745A (en) | Manufacture and installation process for circular heavy steel hopper embedded part | |
| CN104229000B (en) | A kind of turnover device for automobile cab assemble method | |
| CN107327028B (en) | Curved surface main structure and time structure connection construction method | |
| CN103912061B (en) | Steel work bending component high accuracy is exempted to measure construction method | |
| CN113089697A (en) | Construction method for large steel cofferdam field assembly | |
| CN115977313B (en) | Large-span steel truss structure and hoisting method | |
| CN106081946A (en) | A kind of packaged type swing arm tower crane crossbeam termination restraining structure and assembly and disassembly methods thereof | |
| CN103821378B (en) | Large-scale steel tubular pillar two-way center line control method | |
| CN110781543A (en) | Large-span steel beam installation precision control construction method |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190514 |
|
| RJ01 | Rejection of invention patent application after publication |