CN102003078A - Assembling method of net rack - Google Patents
Assembling method of net rack Download PDFInfo
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- CN102003078A CN102003078A CN 201010606463 CN201010606463A CN102003078A CN 102003078 A CN102003078 A CN 102003078A CN 201010606463 CN201010606463 CN 201010606463 CN 201010606463 A CN201010606463 A CN 201010606463A CN 102003078 A CN102003078 A CN 102003078A
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Abstract
The invention discloses an assembling method of a net rack, comprising the following steps of: erecting a bar-shaped scaffold along the middle of the net rack to be assembled, wherein both ends of the scaffold are both erected to supports of the net rack to be assembled; assembling a net rack starting unit from the supports positioned at both ends of the bar-shaped scaffold to the middle, respectively welding with the supports positioned at both ends after assembly is completed, and disassembling the bar-shaped scaffold; and lifting parts or small assembling units well assembled on the ground to upper air, and symmetrically expansively assembling from the middle to both sides of the net rack starting unit in an overhanging manner till the integral net rack is completely assembled. The invention is suitable for the installation construction of various large-span steel net rack roof structure systems and easier and more convenient to operate without a large-size construction machine and only needs to erect a small quantity of supporting scaffolds, thereby greatly enhancing the labor efficiency and reducing the labor intensity; a support frame of the net rack starting unit is disassembled in advance under the precondition of ensuring a structure and safe construction, thus the work efficiency can be enhanced and the resources are saved; and in addition, the invention has obvious social benefit and environmental benefit.
Description
Technical field
The present invention relates to construction engineering technical field, particularly a kind of rack assembling method.
Background technology
Forms such as rack, net shell and steel truss are most widely used at present in the large-span space structure.Installing engineering technology such as the assembly unit of member, upper air installing, assembling in place are the keys of this class longspan structure construction.The job practices of common large-span space structure mainly comprises: high altitude bulk method, itemize piecemeal lift-on/lift-off system, high-altitude sliding method, whole lifting and integral jacking method, whole hanging method etc.
(1) high altitude bulk method
The high altitude bulk method is meant the method that smallest assembled rigid unit or loose mail are always pieced together at design attitude.The all round victory scaffold is arranged and two kinds of the methods of encorbelmenting during construction, the latter's many usefulness of abroad constructing, and once be used for the construction of concrete shell.The former is widely used in the construction of rack, net shell, the construction of especially suitable grid structure with bolt-sphere joints.This job practices does not need large lifting equipment, but need set up large-scale assembling support, needs to consume lot of materials.
(2) subdivision is installed method
Subdivision is installed and to be meant ability be divided into section, bar, the block unit of structure according to self form characteristic and crane gear, and is in place to the high-altitude design attitude by the crane lifting respectively, and then is assembled into the mounting method of integral body.Bigger as the trussed construction span, can't Integratively during lifting, need be divided into plurality of sections; Structures such as rack can be divided into some strip regions or be divided into the rectangular block shape unit along both direction in length and breadth along the long span direction.The characteristics of this method are that major part is welded, assembly unit is operated in ground and carries out, help controlling quality, and can save a large amount of assembling supports, construction weight behind the segmentation subdivision and crane gear elevating capacity adapt, but need to consider interim reinforcement measure after structural segmented, rod member is pieced together in the back, mounted head place in unit still needs to set up the assembly unit moulding bed.
(3) whole hanging method
Whole hanging method be meant on the moulding bed on ground the structural entity assembly unit made finish after, adopt the single or bar of eradicating more, one or more crane carries out the job practices of hoisted in position.Plane structure such as truss etc. often adopt this kind job practices when middle span, assembly unit can extraterrestrial carrying out on the scene.The general employing on the spot of structures such as rack pieced together with the post dislocation is total, and the high-altitude translation is in place.Whole hanging method has reduced work high above the ground to greatest extent, but the above structure of constructure ground often must treat lifting and finish the back and construct, and can not parallelly construct, and the duration is had certain influence, and higher relatively to the performance requirement of crane gear.
(4) whole lift method
Whole lift method is with structural element assembly unit on the spot on ground, lifting means is installed on structural column is promoted, or promoting the job practices of carrying out the pillar sliding formwork simultaneously.According to the structure types difference, be divided into independent lift method, sliding rise combined techniques and rise the beam method.Separately lift method is a structure in that to utilize the lifting means that is installed on the pillar that its integral body is risen to design elevation behind the installation on ground in place.Both can utilize structural column, and interim specialty also can be set promote post.Sliding and rising combined techniques is the structural column slding form operation, promotes and utilizes the hydraulic jack or the Lift-slab machine of slding form operation, while promote structure climbing forms cast post concrete, the structure that is raised also can be used as the operating platform of slding form operation.Rise Liang Fashi and be used for the situation that structure has collar tie beam or girder, utilize lifting means to promote collar tie beam, girder, supporting construction is raised to design elevation simultaneously.Whole lift method can place ground or best height to carry out as constructions such as heating and ventilation, electrical equipment pipelines some appendages of structure, thereby reduces mounting cost.
(5) integral jacking method
Integral jacking method and whole lift method are similar, are placed in below the structure but lift-up method is a jack, utilize the supporting construction of building load-bearing pillar as jacking, by climbing structure step by step such as voussoir, cushion block; The lifting means of lift method is placed in above the structure, hauls structure by suspension rod, steel strand etc. and rises, and both action principles are opposite.
(6) high-altitude sliding method
The high-altitude sliding method is meant the mounting method that certain flat unit or element of construction slippage on the slide rail that is provided with in advance of being divided into the bar section is assembled into integral body to design attitude, this flat unit can be to lift behind installation on ground to the slippage original position, also can be that segmentation, smallest assembled rigid unit even loose mail are combined into sliding element on the installation at high altitude platform, the assembly unit moulding bed generally is located at an end of building, so that slippage.
According to the difference of slipping mode, can be divided into wall scroll sliding method and accumulation slippage method one by one.The former be meant with treat sliding element one by one respectively from an end slippage of assembly unit moulding bed to other end installation in place, connect dress between each bar respectively in the high-altitude, promptly one by one by the unit slippage.The latter is meant earlier (the assembly unit position that can vacate second unit gets final product) behind unit slippage one segment distance, connect install the second unit after two segment units slippage one segment distance (sliding to the assembly unit position of vacating the 3rd unit) together, even adorning the 3rd unit, three sections another slippage one segment distances, so cycling is till loading onto the last item unit.When the longitudinal size of structure is longer, also can be used in combination by above dual mode.Adopt sliding method as plane frame, because single truss structure poor stability can adopt the accumulation slippage method earlier, some truss structures are formed stability sliding element preferably, slippage is to design attitude again.
Press the difference of mobile object in the sliding method process, can be divided into moulding bed sliding method and main structure body sliding method.The moulding bed sliding method is meant under the assembly unit moulding bed of structure installs slide rail, after each assembly unit finishes, slides onto next locations of structures spelling, is similar to the platform mobile scaffold.The main body slippage is meant that assembly unit moulding bed fixed-site is motionless, after each agent structure assembly unit finishes, the assembly unit unit is slid onto design attitude, carries out the spelling of next unit again.
Sliding method is longspan structure construction a kind of methods commonly used such as rack, space truss.In recent years, some mega projects all adopted the method, as Captical International Airport new terminal of the Beijing Capital International Airport steel roof system, airport, Zhuhai terminal rack, Shenzhen Airport terminal steel roof system, Guangzhou International Conference and Exhibition Center etc.
At present, need a kind of large lifting equipment that neither needs badly, need not to set up on a large scale a kind of net shell assembling method of assembling support again.
Summary of the invention
In view of this, the invention provides a kind of rack assembling method, under the prerequisite that can't construct at large scale hoisting machinery, finish installation precast plate.
For achieving the above object, the invention provides following technical scheme:
A kind of rack assembling method comprises step:
1) set up the bar shaped scaffold, set up the bar shaped scaffold along the middle part of rack to be assembled, the bearing place to rack to be assembled is all set up at the two ends of this bar shaped scaffold;
2) assembly unit rack starting unit carries out assembly unit rack starting unit by two end bearing places to the centre along the bar shaped scaffold, after finishing, assembly unit is welded with two end bearings respectively, and dismounting bar shaped scaffold;
3) method of encorbelmenting is installed other racks, and loose mail or the smallest assembled rigid unit that assembles on ground are winched to the high-altitude, by the centre of rack starting unit to the bilateral symmetry expansion assembly unit of encorbelmenting, until whole rack assembly unit is finished.
Preferably, in above-mentioned rack assembling method, described rack starting unit is 2～5 mesh widths.
Preferably, in above-mentioned rack assembling method, the assembly unit of rack starting unit highly is higher than the rack springing height 2-3cm herein of design.
Preferably, in above-mentioned rack assembling method, described step 1) is set up the bar shaped scaffold, set up two bar shaped scaffolds along the middle part of rack to be assembled, and two bar shaped scaffolds intersect in the centre position of the two, and the bearing place to rack to be assembled is all set up at the two ends of these two bar shaped scaffolds.
Preferably, in above-mentioned rack assembling method, described step 2) assembly unit rack starting unit, carry out assembly unit corresponding two racks starting unit by its two end bearings place to the centre along two bar shaped scaffolds respectively, be welded with the bearing at its two ends respectively after assembly unit finishes, and dismantle two bar shaped scaffolds.
Preferably, in above-mentioned rack assembling method, the described step 3) method of encorbelmenting is installed other racks, loose mail or the smallest assembled rigid unit that assembles on ground are winched to the high-altitude, the symmetry expansion assembly unit of encorbelmenting laterally of the centre of four sector regions being made up of two racks starting unit that intersect is until whole rack assembly unit is finished.
From above-mentioned technical scheme as can be seen, rack assembling method provided by the invention is applicable to the installation of various large-span steel rack roofing structural systems, can not need large-scale construction equipment, operate easier, and only need set up a small amount of support scaffolding, thereby improved efficiency greatly, reduced labour intensity.By the invention solves the key technology problems of hyperbolic paraboloid net shell free cantilever erection technology, under the prerequisite that guarantees structure and construction safety, remove the bracing frame of start element in advance, can improve work efficiency, reduction of erection time, reduction cost, economize on resources, have tangible society and environmental benefit.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The process chart of the rack assembling method that Fig. 1 provides for the embodiment of the invention;
The plan structure schematic diagram of the bar shaped scaffold that Fig. 2 provides for the embodiment of the invention;
The structural representation of the rack starting unit splicing that Fig. 3 provides for the embodiment of the invention;
The structural representation that Fig. 4 finishes for the rack starting unit splicing that the embodiment of the invention provides;
The structural representation of other rack assembly units that Fig. 5 provides for the embodiment of the invention;
The structural representation that Fig. 6 finishes for the whole assembly units of rack that the embodiment of the invention provides;
The main TV structure schematic diagram of the rack that Fig. 7 provides for the embodiment of the invention.
The specific embodiment
The invention discloses a kind of rack assembling method, under the prerequisite that can't construct at large scale hoisting machinery, finish installation precast plate.
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
See also the process chart of the rack assembling method that Fig. 1-Fig. 7 Fig. 1 provides for the embodiment of the invention; The plan structure schematic diagram of the bar shaped scaffold that Fig. 2 provides for the embodiment of the invention; The structural representation of the rack starting unit splicing that Fig. 3 provides for the embodiment of the invention; The structural representation that Fig. 4 finishes for the rack starting unit splicing that the embodiment of the invention provides; The structural representation of other rack assembly units that Fig. 5 provides for the embodiment of the invention; The structural representation that Fig. 6 finishes for the whole assembly units of rack that the embodiment of the invention provides; The main TV structure schematic diagram of the rack that Fig. 7 provides for the embodiment of the invention.，
Rack assembling method provided by the invention comprises:
Step 101: set up the bar shaped scaffold;
Set up bar shaped scaffold 1 along the middle part of rack to be assembled, the bearing place to rack to be assembled is all set up at the two ends of this bar shaped scaffold 1, so-called rack to be assembled is intrinsic space truss structure, bearing place to rack to be assembled is all set up at the two ends of bar shaped scaffold 1, the space truss structure that can guarantee assembly unit can link to each other with bearing, improves stability.The equal scaffolding height in the two ends of bar shaped scaffold 1 should adapt with the rack height of design herein.Bearing is the concrete structure part of rack building structure, and rack belongs to the top of building structure.
Step 102: assembly unit rack starting unit 2;
Carry out assembly unit rack starting unit 2 by the bearing place at two ends to the centre along bar shaped scaffold 1, be welded with two end bearings respectively after assembly unit finishes, and dismounting bar shaped scaffold.Generally after assembly unit finishes, need check also whether assembly unit is complete, correct, check that errorless back is welded with bearing, forms the stable structure system that is enough to bear deadweight and working load.It should be noted that rack starting unit 2 is to utilize the bar shaped scaffold of having put up 1 as operating platform, loose mail or the smallest assembled rigid unit that assembles on ground are winched to the high-altitude, carry out to the centre by two end bearing places that assembly unit finishes.Rack starting unit 2 assembly units finish with bearing be welded fixing after, can carry out off-load to the rack unit 2 of starting to walk, remove bar shaped scaffold 1.
Step 103: the method for encorbelmenting is installed other racks;
Loose mail or the smallest assembled rigid unit that assembles on ground are winched to the high-altitude, by the centre of rack starting unit 2 to the bilateral symmetry expansion assembly unit of encorbelmenting, until whole rack assembly unit is finished.As shown in Figure 5, with rack starting unit 2 as the load-bearing basis, at the mid portion of its both sides respectively to other racks 4 of its two ends assembly unit, until laying to designing rack border 3.Assembly unit is in proper order: whenever extend a grid forward, the rack lower edge is installed earlier, again at the good cell node of installation on ground, every cell node is advisable with four rod members of a steel ball; It is in place in the air to utilize hoist engine or tower crane that cell node is winched to.The installer is sitting on the node, treat that high-strength bolt is aimed at screw on the bolt sphere after, tighten, promptly finish the installation of a cell node, extend expansion with this erection sequence and go down, install up to whole axis, and carry out temporary fixed two end bearings.Integral body adjustment after all installing for ease of the net shell, it is fixing that do not do welding to bearing this moment.
Rack assembling method provided by the invention is applicable to the installation of various large-span steel rack roofing structural systems, can not need large-scale construction equipment, operate easylier, and only need set up a small amount of support scaffolding, thereby improved efficiency greatly, reduced labour intensity.By the invention solves the key technology problems of hyperbolic paraboloid net shell free cantilever erection technology, under the prerequisite that guarantees structure and construction safety, remove the bracing frame of start element in advance, can improve work efficiency, reduction of erection time, reduction cost, economize on resources, have tangible society and environmental benefit.
Rack starting unit 2 is generally 2～5 mesh widths, is standard can form the structural system that is enough to bear deadweight and working load.Can not be wide, if the overlong time that wide then bar shaped scaffold 1 keeps, the construction of the concrete structure that influence is following; Can not be narrow, narrowly then can't carry its deadweight, and the weight of other racks of installing of the method for encorbelmenting of back.
Consider that follow-up installation of whenever striding all can increase the load of rack self gradually, the assembly unit of rack starting unit 2 highly is higher than the rack springing height 2-3cm herein of design.Thereby can offset in follow-up other racks of assembly unit, impose on slight sag that the gravity of rack starting unit 2 produces.
Step 101 can be specially sets up bar shaped scaffold 1, set up two bar shaped scaffolds along the middle part of rack to be assembled, and two bar shaped scaffolds intersect in the centre position of the two, and the bearing place to rack to be assembled is all set up at the two ends of these two bar shaped scaffolds.
Step 102 can be specially assembly unit rack starting unit 2, carry out assembly unit corresponding two racks starting unit by its two end bearings place to the centre along two bar shaped scaffolds respectively, be welded with the bearing at its two ends respectively after assembly unit finishes, and dismantle two bar shaped scaffolds.
Step 103 can be specially the method for encorbelmenting other racks are installed, loose mail or the smallest assembled rigid unit that assembles on ground are winched to the high-altitude, the symmetry expansion assembly unit of encorbelmenting laterally of the centre of four sector regions being made up of two racks starting unit that intersect is until whole rack assembly unit is finished.
Can find out by above-mentioned steps, an X-shape or a brief note shape can be set up in rack starting unit 2, wherein for X-shape, the unit 2 of can preferably rack being started to walk is assembled into cross, i.e. 2 one-tenth vertical states in two crossing racks starting unit, it is divided into four 90 ° sector region with whole space truss structure like this, can carry out assembly unit to other racks of this sector region remainder of four 90 °.
The present invention is applicable to the installation of various large-span steel rack roofing structural systems, can not need large-scale construction equipment, operate easier, and only need set up a small amount of support scaffolding, and under the prerequisite that guarantees structure and construction safety, remove the bracing frame of start element in advance, thereby improved efficiency greatly, reduced labour intensity.
Each embodiment adopts the mode of going forward one by one to describe in this manual, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (6)
1. a rack assembling method is characterized in that, comprises step:
1) set up the bar shaped scaffold, set up the bar shaped scaffold along the middle part of rack to be assembled, the bearing place to rack to be assembled is all set up at the two ends of this bar shaped scaffold;
2) assembly unit rack starting unit carries out assembly unit rack starting unit by two end bearing places to the centre along the bar shaped scaffold, after finishing, assembly unit is welded with two end bearings respectively, and dismounting bar shaped scaffold;
3) method of encorbelmenting is installed other racks, and loose mail or the smallest assembled rigid unit that assembles on ground are winched to the high-altitude, by the centre of rack starting unit to the bilateral symmetry expansion assembly unit of encorbelmenting, until whole rack assembly unit is finished.
2. rack assembling method as claimed in claim 1 is characterized in that, described rack starting unit is 2～5 mesh widths.
3. rack assembling method as claimed in claim 1 is characterized in that, the assembly unit of rack starting unit highly is higher than the rack springing height 2-3cm herein of design.
4. rack assembling method as claimed in claim 1, it is characterized in that, described step 1) is set up the bar shaped scaffold, set up two bar shaped scaffolds along the middle part of rack to be assembled, and two bar shaped scaffolds intersect in the centre position of the two, and the bearing place to rack to be assembled is all set up at the two ends of these two bar shaped scaffolds.
5. rack assembling method as claimed in claim 4, it is characterized in that, described step 2) assembly unit rack starting unit, carry out assembly unit corresponding two racks starting unit by its two end bearings place to the centre along two bar shaped scaffolds respectively, be welded with the bearing at its two ends respectively after assembly unit finishes, and dismantle two bar shaped scaffolds.
6. rack assembling method as claimed in claim 5, it is characterized in that, the described step 3) method of encorbelmenting is installed other racks, loose mail or the smallest assembled rigid unit that assembles on ground are winched to the high-altitude, the symmetry expansion assembly unit of encorbelmenting laterally of the centre of four sector regions being made up of two racks starting unit that intersect is until whole rack assembly unit is finished.
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| CN 201010606463 CN102003078A (en) | 2010-12-24 | 2010-12-24 | Assembling method of net rack |
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| CN 201010606463 CN102003078A (en) | 2010-12-24 | 2010-12-24 | Assembling method of net rack |
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Cited By (6)
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| CN102345393A (en) * | 2011-07-14 | 2012-02-08 | 中建八局第四建设有限公司 | High-altitude bulk process of bolt ball net frame |
| CN102877480A (en) * | 2012-10-23 | 2013-01-16 | 上海市机械施工有限公司 | Method for mounting annular truss |
| CN103075017A (en) * | 2013-02-01 | 2013-05-01 | 徐州中煤百甲重钢科技有限公司 | Super-long-span cylindrical shell lattice structure construction method |
| CN103711322A (en) * | 2014-01-19 | 2014-04-09 | 芜湖天航科技（集团）股份有限公司 | Construction method for mounting large-span semispherical reticulated shell through overhanging |
| CN105178609A (en) * | 2015-09-06 | 2015-12-23 | 中建二局第三建筑工程有限公司 | High-altitude bulk construction method for steel-structure grid |
| CN105386604A (en) * | 2015-10-09 | 2016-03-09 | 多维联合集团有限公司 | High altitude grid structure mounting method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345393A (en) * | 2011-07-14 | 2012-02-08 | 中建八局第四建设有限公司 | High-altitude bulk process of bolt ball net frame |
| CN102877480A (en) * | 2012-10-23 | 2013-01-16 | 上海市机械施工有限公司 | Method for mounting annular truss |
| CN102877480B (en) * | 2012-10-23 | 2015-04-22 | 上海市机械施工集团有限公司 | Method for mounting annular truss |
| CN103075017A (en) * | 2013-02-01 | 2013-05-01 | 徐州中煤百甲重钢科技有限公司 | Super-long-span cylindrical shell lattice structure construction method |
| WO2014117480A1 (en) * | 2013-02-01 | 2014-08-07 | 徐州中煤百甲重钢科技有限公司 | Method of constructing cylindrical shell grid structure with ultra-large span |
| CN103711322A (en) * | 2014-01-19 | 2014-04-09 | 芜湖天航科技（集团）股份有限公司 | Construction method for mounting large-span semispherical reticulated shell through overhanging |
| CN105178609A (en) * | 2015-09-06 | 2015-12-23 | 中建二局第三建筑工程有限公司 | High-altitude bulk construction method for steel-structure grid |
| CN105178609B (en) * | 2015-09-06 | 2017-07-28 | 中建二局第三建筑工程有限公司 | Steel structure net rack high altitude bulk construction method |
| CN105386604A (en) * | 2015-10-09 | 2016-03-09 | 多维联合集团有限公司 | High altitude grid structure mounting method |
| CN105386604B (en) * | 2015-10-09 | 2018-03-16 | 多维联合集团有限公司 | A kind of high-altitude wire frame installation method |
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Application publication date: 20110406 |