CN106638960A - Super-span cylindrical latticed shell construction method - Google Patents
Super-span cylindrical latticed shell construction method Download PDFInfo
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- CN106638960A CN106638960A CN201611168852.7A CN201611168852A CN106638960A CN 106638960 A CN106638960 A CN 106638960A CN 201611168852 A CN201611168852 A CN 201611168852A CN 106638960 A CN106638960 A CN 106638960A
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- platform
- reticulated shell
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Classifications
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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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
-
- 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
- E04B1/342—Structures covering a large free area, whether open-sided or not, e.g. hangars, halls
-
- 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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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention provides a super-span cylindrical latticed shell construction method. The construction method is characterized in that a bolt ball latticed shell is adopted as a support platform of a cylindrical latticed shell, and an operation platform is erected on the support platform for installation operation of a starting unit and a follow-up latticed shell. Installation operation of the starting unit and the support platform is conducted by adopting a block unit ground assembly and airborne docking construction method, and installation operation of the follow-up latticed shell is conducted by adopting an accumulation slippage or sliding platform method. According to the construction method, the advantages that the occupied site is small in the operation process, the construction speed is high, the cost and the safety risk are low, and the construction quality is high are highlighted.
Description
Technical field
The present invention relates to a kind of construction method, especially a kind of steel construction grid construction method, it is specifically a kind of across
Super-large span cylindrical reticulated shell construction method of the degree more than 140 meters.
Background technology
At present, super-large span cylindrical reticulated shell is widely used in the industries such as coal, electric power, cement, iron and steel, is to protect
The materials such as the coal of shield stacker-reclaimer and outdoor storage, and reduce what it specially built to ambient contamination, particularly exist
Original place does not allow to build and connects in the case of cylindrical reticulated shell structure more, a kind of especially big single-span cylindrical reticulated shell then built.
At present, for cylindrical reticulated shell, the critical process of construction is that the installation of starting unit, the good of unit construction of starting to walk
It is bad to directly affect the installation of follow-up reticulated shell, so that affect the success or failure of whole engineering.For this super-large span dual-layer welding ball
Cylindrical reticulated shell, three layers of bolt sphere cylindrical reticulated shell, conventional construction method is, using full hall scaffold as operation platform, to be started to walk
Unit is installed, and follow-up construction is constructed using accumulative sliding technique or sliding platform.
The main weak point following points of installation that reticulated shell is carried out using full hall scaffold：1., full hall scaffold is taken and is torn open
It is high with lease expenses；2., to take the cycle of tearing open long for full hall scaffold, affects big to the duration；3., work high above the ground time lengthening, increases
Potential safety hazard.
The content of the invention
The purpose of the present invention is, high cost big for existing super-large span cylindrical reticulated shell difficulty of construction, and cycle length is asked
Topic, invention one kind replaces full hall scaffold platform to carry out the starting unit installation exercise of reticulated shell with " bolt sphere reticulated shell platform ",
The super-large span cylindrical reticulated shell construction method that follow-up reticulated shell is installed using the method for accumulation slippage method or sliding platform.
The technical scheme is that：
A kind of super-large span cylindrical reticulated shell construction method, is characterized in that it is comprised the following steps：
First, according to the characteristics of structure and the situation of place, the position of starting unit is selected；According to local characteristi cvalue o fwindload and peace
Temperature conditionss during dress, through design checking result the size of starting unit is selected, to meet starting unit as separate support
The requirement of structure；
Secondly, according to the size of starting unit and pass to the size of support platform load and support designing lower bolt net shell
Platform, support platform width（I.e. along cylindrical reticulated shell axial direction）Starting unit reticulated shell 1m or so is grown per side, to facilitate peace
Dress personnel walk；
3rd, piecemeal installation on ground support platform, dock in the air it is in place after, installation operation platform, and being supported with total powerstation
The setting-out of point position；After setting strong point position, assembled good starting unit piecemeal is lifted to design point position, aerial docking is just
Position；After starting unit installation, emulation checking computations are carried out to the uninstall process of unit of starting to walk, according to emulation checking computation results, point
Criticize and progressively unload support jack；
Finally, sliding cylindrical reticulated shell or support platform carry out the construction of follow-up reticulated shell unit.
Described cylindrical reticulated shell span is not less than 140m.
Described support platform is bolt sphere reticulated shell platform to facilitate the installation and removal of support platform, operating platform column to lead to
Cross rest to be connected with support platform, operating platform column is welded to connect with rest, operating platform beam and operating platform column bolt connection,
Support beam is connected with operating platform beam bolt.
When being constructed using accumulation slippage method for follow-up rack, bolt sphere reticulated shell support platform post design is into groined type post
Form, during using the sliding platform follow-up reticulated shell of construction, form of the bolt sphere reticulated shell support platform post design into rack wall.
Described reticulated shell is assembled by dual-layer welding net or three layers of bolt-ball net frame, using dual-layer welding net
Prevent because of the overweight and caused deformation of reticulated shell or collapse as the span that should install support column in reticulated shell to reduce reticulated shell during reticulated shell
Fall into.
Described support column is located at whole span direction 1/3.
Beneficial effects of the present invention：
The present invention has reduced investment, short construction period, safe advantage.
It is few that the present invention has highlighted operation process occupied ground, and speed of application is fast, and expense is low, and security risk is low, construction quality
High the features such as.
Description of the drawings
Fig. 1 is that the dual-layer welding net of the present invention supports facade to illustrate.
Fig. 2 is that the dual-layer welding net shell platform post and reticulated shell post of the present invention install signal.
Fig. 3 is that the dual-layer welding net shell platform of the present invention docks order signal with platform post.
Fig. 4 is that the dual-layer welding net shell docking order of the present invention is illustrated.
Fig. 5 is that three layers of bolt-ball net frame of the present invention support facade.
Fig. 6 is that three layers of bolt sphere reticulated shell platform post of the present invention install signal.
Fig. 7 is that three layers of bolt sphere reticulated shell platform of the present invention dock order signal with platform post.
Fig. 8 is that three layers of bolt sphere reticulated shell docking order of the present invention is illustrated.
Fig. 9 is that the operating platform of the present invention is illustrated.
In Fig. 91 be top reticulated shell lower edge, 2 support beams, 3 is operating platform column, and 4 is support jack, and 5 is rest, and 6 are
Operating platform beam, 7 is bottom reticulated shell support platform.
Figure 10 is that the sequence of unloading of the present invention is illustrated.
Specific embodiment
With reference to the accompanying drawings and examples the present invention is further illustrated.
The characteristics of a kind of construction method of super-large span cylindrical reticulated shell, the method, is pacified using bolt sphere reticulated shell platform
Pretend industry so that the operation process occupied ground is few, speed of application is fast, and expense is low, and security risk is low, and its step is as follows：
First, reticulated shell basis parameters are checked.
Second, according to the characteristics of structure and the situation of place, select the position of starting unit.According to local characteristi cvalue o fwindload
And temperature conditionss when installing, the size of starting unit is selected through design checking result, to meet starting unit as independence
The requirement of supporting structure.
3rd, according to the size of starting unit and the size of support platform load is passed to designing lower bolt net shell
Support platform, support platform width grows top reticulated shell 1m or so per side, facilitates installation personnel to walk.
4th, according to design drawing construction supporting platform basis, after basis reaches design requirement intensity, carry out follow-up net
The installation exercise of shell support platform.
5th, ground piecemeal assembly reticulated shell support platform, then piecemeal lifting, docks in the air in place.
6th, set up operating platform on support platform top, and setting-out a little is supported using total powerstation.
7th, ground piecemeal assembly cylindrical reticulated shell starting unit and follow-up installation grid cell it is stand-by, according to being installed into
Lift to support platform with piecemeal, dock in the air in place.
8th, after starting unit installation, emulation checking computations are carried out to the uninstall process of unit of starting to walk, test according to emulation
Result is calculated, support jack is progressively unloaded in batches.
9th, sliding cylindrical reticulated shell or support platform carry out the construction of follow-up reticulated shell.
By taking Fig. 1 engineerings as an example, beneficial effects of the present invention such as following table one：
The beneficial effect contrast table of table one
Details are as follows：
First, reticulated shell basis is checked
First according to design drawing, civil engineering unit is ejected reticulated shell base by units such as chief supervision engineer's organization design, constructions
Plinth cross hairs carry out the parameters such as axial dimension, position, levelness, absolute altitude and bearing crab-bolt position, according to design and construction specification
Requirement is checked, and the parameter to not meeting design and construction code requirement is rectified and improved, and the reticulated shell basis after rectification is carried out
Check it is errorless after handle middle handing over procedure.The position of the position of bearing-surface top board, absolute altitude, levelness and bearing crab-bolt allows
Deviation should meet the regulation of table two.
The bearing-surface top board of table two, the tolerance of bearing crab-bolt position（mm）
2nd, starting Unit selection
According to the characteristics of structure and live place situation, first initial option is carried out to the position and size of unit of starting to walk, started to walk
Unit depth-width ratio is generally no greater than 3, after tentatively selecting starting unit, checking computations is designed to unit of starting to walk, and starting unit exists
When the collective effect of wind load and temperature effects is met in the case of deadweight, the selection of unit of starting to walk can be met as independent support
The needs of structure.
3rd, the design of support platform
Install and remove conveniently to meet, by Support Platform Design into bolt sphere latticed shell structure, the width of support platform is every
Side typically than reticulated shell starting unit it is wide go out 1m（Cylinder axial direction）.According to the deadweight of starting unit, and consider corresponding according to specification
Effect of construction loads, temperature effects and wind load etc., is designed to support platform and platform base, to meet the need of support
Will.
4th, support platform foundation construction
According to platform base design drawing, platform base unwrapping wire is supported first on the basis of the reticulated shell basis of acceptance(check) and is determined
Position, then carries out earth excavation（Yield rainfall relation）, then foundation construction, backfilling of earthwork is finally carried out, treat that underlying strength meets construction rule
Model carries out support platform installation after requiring.
5th, support platform is installed
Support platform includes platform post and platform（See Fig. 1 and Fig. 5）Two parts, Fig. 1 uses dual-layer welding ball-collecting rack, and Fig. 5 is adopted
It is three layers of bolt-ball net frame, sequence of construction is installed rear platform and installed for first platform post.Platform post part adopts high altitude bulk
Method is constructed（See Fig. 2 and Fig. 6）, terrace part is assembled using ground block elements, then integral hoisting and platform post overhead connection
Construction method in place（See Fig. 3 and Fig. 7）.
6th, operating platform is installed
Operating platform is formed by rest, operating platform column, operating platform beam, support beam construction（See Fig. 9）, it is flat for the ease of operation
The dismounting of platform, operating platform column is welded to connect with bolt-ball net frame rest, and operating platform beam and operating platform column bolt are connected
Connect, support beam is connected with operating platform beam bolt, jack is arranged in support beam, and the lower edge of reticulated shell unit is supported on two
On jack.Install in place successively according to the order of the first post back rest during installation, and ensure that the perpendicularity of post expires with the levelness of beam
Sufficient construction requirement.
7th, reticulated shell starting unit is installed
It is some block elements by the starting dividing elements of reticulated shell to reduce positioning difficulty on the operational platform, it is block single
Unit's installation on ground platform near using principle nearby, then piecemeal lift to operating platform, the positioning employing of block elements
Reflectorless total station, the Pass line adjustment of block elements is using the jack at the top of support beam（See Fig. 9）, it is to ensure block elements pair
Connect along power, the assembled size of block elements should meet design and construction code requirement（It is shown in Table three）, each bolt is ensured during docking
Apply fit-up gap, angle of stubborn or welded tube and ball etc. and meet design and construction code requirement.
The tolerance of the block elements of table three（mm）
8th, reticulated shell starting unit unloading
Reticulated shell starting unit unloading is the critical process of starting unit construction success or failure, according to the successful case of similar item unloading,
First emulation checking computations are carried out to unit of starting to walk before unloading, stress prison is carried out to crucial rod member according to checking computation results in uninstall process
Survey, displacement monitoring is carried out to key ball point, make to pinpoint the problems in advance and early preventive measure.In order to ensure lotus during unloading
The uniformity of distribution is carried, is symmetrically carried out simultaneously toward seat pivot position from span centre position of the fulcrum using two groups of personnel during unloading（See
Figure 10）, the height that jack is unloaded every time is advisable with 2cm, by multiple reciprocal unloading operation, by jack disengaging lower edge ball position
Put.
9th, reticulated shell starting unit accumulation slippage or sliding platform
After the completion of starting unit unloading, will starting unit and support platform using the method for accumulation slippage method or sliding platform
A certain distance is left, the installation exercise of follow-up reticulated shell is continued in support platform, subsequently often complete after certain area, first to carry out
Unloaded operation, then proceedes to sliding, and the rest may be inferred, completes the sliding installment work of whole reticulated shell.
Reticulated shell can adopt dual-layer welding net or tri- layers of bolt-ball net frames of Fig. 5 shown in Fig. 1 assembled, using bilayer
Welding net prevents from causing because reticulated shell is overweight as support column should being installed in reticulated shell during reticulated shell with the span for reducing reticulated shell
Deformation or subside, the setting of described support column is normally at whole span direction 1/3, as Figure 1-4.
Part that the present invention does not relate to is same as the prior art or can be realized using prior art.
Claims (6)
1. a kind of super-large span cylindrical reticulated shell construction method, is characterized in that it is comprised the following steps：
First, according to the characteristics of structure and the situation of place, the position of starting unit is selected；According to local characteristi cvalue o fwindload and peace
Temperature conditionss during dress, through design checking result the size of starting unit is selected, to meet starting unit as separate support
The requirement of structure；
Secondly, according to the size of starting unit and pass to the size of support platform load and support designing lower bolt net shell
Platform, support platform width grows starting unit reticulated shell 1m or so per side, to facilitate installation personnel to walk；
3rd, piecemeal installation on ground support platform, dock in the air it is in place after, installation operation platform, and being supported with total powerstation
The setting-out of point position；After setting strong point position, assembled good starting unit piecemeal is lifted to design point position, aerial docking is just
Position；After starting unit installation, emulation checking computations are carried out to the uninstall process of unit of starting to walk, according to emulation checking computation results, point
Criticize and progressively unload support jack；
Finally, sliding cylindrical reticulated shell or support platform carry out the construction of follow-up reticulated shell.
2. construction method according to claim 1, is characterized in that described cylindrical reticulated shell span is not less than 140m.
3. construction method according to claim 1, to it is characterized in that described support platform be bolt sphere reticulated shell platform with side
Just the installation and removal of support platform, operating platform column is connected by rest with support platform, and operating platform column is welded with rest
Connection, operating platform beam and operating platform column bolt connection, support beam is connected with operating platform beam bolt.
4. construction method according to claim 1, it is characterized in that for follow-up rack constructed using accumulation slippage method when, spiral shell
Bolt net shell support platform post design into groined type post form, using sliding platform construct follow-up reticulated shell when, bolt sphere reticulated shell
Form of the support platform post design into rack wall.
5. construction method according to claim 1, is characterized in that described reticulated shell by dual-layer welding net or three layers of spiral shell
Bolt net is assembled, adopts dual-layer welding net as should install support column during reticulated shell in reticulated shell to reduce reticulated shell
Span is prevented because of the overweight and caused deformation of reticulated shell or subsided.
6. construction method according to claim 5, is characterized in that described support column is located at whole span direction 1/3.
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| CN201611168852.7A CN106638960A (en) | 2016-12-16 | 2016-12-16 | Super-span cylindrical latticed shell construction method |
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| CN201611168852.7A CN106638960A (en) | 2016-12-16 | 2016-12-16 | Super-span cylindrical latticed shell construction method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107338868A (en) * | 2017-08-28 | 2017-11-10 | 中国建筑第二工程局有限公司 | Large spherical screen mounting system and construction method thereof |
| CN107366434A (en) * | 2017-07-28 | 2017-11-21 | 中冶天工集团有限公司 | A kind of large area oblique lattice steel construction wall stand integral installation method |
| CN107386460A (en) * | 2017-07-18 | 2017-11-24 | 江苏绿色辉煌节能科技有限公司 | A kind of large-span shell bolted spherical node installation method |
| CN109812021A (en) * | 2019-01-22 | 2019-05-28 | 中国二十冶集团有限公司 | A kind of installation method of large span welding ball grid |
| CN110130676A (en) * | 2019-06-03 | 2019-08-16 | 航天建筑设计研究院有限公司 | A kind of bolted spherical node formula rack moulding bed and its green construction method |
| CN110374200A (en) * | 2019-07-25 | 2019-10-25 | 中亿丰建设集团股份有限公司 | Large span rigidity unevenly mixes rack high altitude bulk method |
| CN110387965A (en) * | 2019-07-11 | 2019-10-29 | 山西建筑工程集团有限公司 | A kind of coal yard wide-span cylindrical reticulated shell structure gable starting construction method |
| CN111980417A (en) * | 2020-08-20 | 2020-11-24 | 广州珠江建设发展有限公司 | Roof truss modular pre-assembling and folding construction method |
| CN114215191A (en) * | 2022-02-23 | 2022-03-22 | 北京建工集团有限责任公司 | Modular hoisting and two-stage integral synchronous lifting method for ultra-large span steel roof |
| CN115370010A (en) * | 2022-07-29 | 2022-11-22 | 鞍钢集团朝阳钢铁有限公司 | Large-span bolt ball net shell overhanging bulk double-side sliding installation method |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107386460A (en) * | 2017-07-18 | 2017-11-24 | 江苏绿色辉煌节能科技有限公司 | A kind of large-span shell bolted spherical node installation method |
| CN107366434A (en) * | 2017-07-28 | 2017-11-21 | 中冶天工集团有限公司 | A kind of large area oblique lattice steel construction wall stand integral installation method |
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| CN109812021B (en) * | 2019-01-22 | 2021-08-03 | 中国二十冶集团有限公司 | Installation method of large-span welding ball net rack |
| CN110130676A (en) * | 2019-06-03 | 2019-08-16 | 航天建筑设计研究院有限公司 | A kind of bolted spherical node formula rack moulding bed and its green construction method |
| CN110387965B (en) * | 2019-07-11 | 2020-12-29 | 山西建筑工程集团有限公司 | Mountain wall starting construction method for large-span cylindrical reticulated shell structure of coal storage yard |
| CN110387965A (en) * | 2019-07-11 | 2019-10-29 | 山西建筑工程集团有限公司 | A kind of coal yard wide-span cylindrical reticulated shell structure gable starting construction method |
| CN110374200A (en) * | 2019-07-25 | 2019-10-25 | 中亿丰建设集团股份有限公司 | Large span rigidity unevenly mixes rack high altitude bulk method |
| CN111980417A (en) * | 2020-08-20 | 2020-11-24 | 广州珠江建设发展有限公司 | Roof truss modular pre-assembling and folding construction method |
| CN111980417B (en) * | 2020-08-20 | 2021-05-11 | 广州珠江建设发展有限公司 | Roof truss modular pre-assembling and folding construction method |
| CN114215191A (en) * | 2022-02-23 | 2022-03-22 | 北京建工集团有限责任公司 | Modular hoisting and two-stage integral synchronous lifting method for ultra-large span steel roof |
| CN115370010A (en) * | 2022-07-29 | 2022-11-22 | 鞍钢集团朝阳钢铁有限公司 | Large-span bolt ball net shell overhanging bulk double-side sliding installation method |
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Application publication date: 20170510 |