CN102345393B - High-altitude bulk process of bolt ball net frame - Google Patents
High-altitude bulk process of bolt ball net frame Download PDFInfo
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- CN102345393B CN102345393B CN201110196872.6A CN201110196872A CN102345393B CN 102345393 B CN102345393 B CN 102345393B CN 201110196872 A CN201110196872 A CN 201110196872A CN 102345393 B CN102345393 B CN 102345393B
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Abstract
The invention discloses a high-altitude bulk process of a bolt ball net frame, comprising the steps: 1) erecting local scaffolds; 2) assembling square pyramidal units on the ground; 3) carrying out local assembly of the net frame on the local scaffolds and forming a net-frame start crossing unit; and 4) assembling the start crossing unit by adopting lifting equipment, wherein the lifting equipment is fixed to the start crossing unit; the square pyramidal units are lifted to high altitude by the lifting equipment and are symmetrically overhung, expanded and assembled from the middle of the net-frame start crossing unit to the two sides thereof till the assembly of the whole bolt ball net frame is finished. The high-altitude bulk process provided by the invention is applicable to installation and construction of various large-span bolt ball net frame roof structure systems; and according to the high-altitude bulk process, large construction machines are not needed, the operation is simpler, and only few supporting scaffolds need to be erected, thus greatly improving the labor efficiency and reducing the labor intensity.
Description
Technical field
The present invention relates to construction engineering technical field, particularly a kind of high-altitude bulk process of bolt ball net frame.
Background technology
Bolt-ball net frame high altitude bulk technology is current comparatively general steel structure net rack construction technology, and this technology adopts steel pipe scaffold to set up the assembled fetal membrane of full hall rack conventionally, and constructor carries out rack installation on full hall tire film frame.High altitude bulk method is simple to operation, speed of application is fast, save artificial, can reduce Site Welding, reduced the pollution to surrounding environment, do not possess at the scene under particular job environment of big machinery lifting and Integral lifting condition and can better guarantee workmanship, reduction engineering cost, realizes energy-saving and emission-reduction and green construction.
Certain stadium engineering roofing agent structure is bolt sphere steel grid structure, and supporting form is the supporting of lower edge pin deck.Be limited to execute-in-place environment, cannot adopt the job practicess such as Integral lifting, high-altitude slippage, construction plant also cannot install large-scale lifting appliance mast and hang etc. and to realize piecemeal adding type and promote, so can only adopt high altitude bulk on full hall scaffold 1 as shown in Figure 1 in Scheme Choice.
The long 93.8m of roof system thing in certain sports palace, north and south is 67.8m, design space height 15.8～17.5m, 5400 square metres of projected areas, 56 meters of maximum spans.Ground, this project hall is the thick base plate of 150mm, and design bearing capacity is 4.0KN/m
2, rack main body Construction of Steel Structure load is 3KN/m
2, the scaffold deadweight that adds average 16 meters high is about 2KN/m
2, floor cannot bear upper load, and a negative layer height is 6 meters, must carry out consolidation process, sets up full hall scaffold equally at the correspondence position of setting up region, and upper load is passed to basis.
Adopt traditional full hall scaffold job practices, need to expend a large amount of scaffolds, 6 meters of reinforcing scaffolds of 16 meters of construction scaffoldings and negative one deck are through not exclusively calculating, the about 70 meters of scaffold tubes of every square meter and 65 fasteners.The scaffold support system of square meter more than 5000 thus, not only on material, waste is very large, and just only scaffold take to tear open and expend a large amount of manpower and materials, construction cost is quite large, the duration is corresponding increase also.
Adopt full hall scaffold as the assembled fetal membrane of Construction of The Grids, need in whole rack overlay area, set up scaffold, and completely spread scaffold floor at scaffold top.In present case, under the projected area of 5400 square metres, all set up average 16 meters of high full hall scaffolds, the circulation material of consumption is suitable considerable.If the in the situation that of Floor load-bearing capacity deficiency, in negative 6 meters of high same area of one deck, also need to set up full hall frame and support, increased again a large amount of circulation materials, impel cost greatly to increase.So large scaffold is taken and is torn operation open, need to drop into a large amount of specialty personnel of setting up and set up, not only consumable material, and lost labor.
Adopt high altitude bulk on full hall scaffold, a large amount of scaffolds take tear open need to be very long the preparation of construction time, and take in the process of tearing open and also consume the extensive work time, the duration is caused to very large impact.Simultaneously, rack roofing construction is critical process, not only take a large amount of construction plants, and bring restriction to the subsequent handlings such as hall ground construction, periphery curtain wall construction and indoor hard-cover operation, once the rack roofing construction period lags behind, make a big impact to other each specialties, directly affect the realization of total duration target.
Adopt high altitude bulk on full hall scaffold, the rod member and the bolt sphere that approach 300 tons need to all lift to the assembled fetal membrane of scaffold, and then carry out assembled, cause the high-altitude rehandling of rack material, not only there is larger potential safety hazard, and workman's work high above the ground, efficiency reduces greatly, brings very large impact to the progress of engineering.
In sum, adopt full hall scaffold in construction, to have following defect:
1, the assembled scaffold of full hall rack not only needs to take a large amount of circulation materials, and shelf to take the amount of tearing open large, the construction operation phase is long.
2, Construction of The Grids is set up and is needed enough bearing capacity of foundation soil with full hall scaffold, for venue class competition hall floor, design bearing capacity of floor slab cannot meet the deadweight of full hall support body and top rack working load, need to increase and support at bottom, consumes more circulation material and cost.
3, rack material all needs to lift to full hall scaffold, and rod member and bolt sphere disperse stacking need take measures to prevent that club body from rolling, falling in plane, have larger potential safety hazard.
Therefore, how to reduce the consumption of material, reduce artificial waste, reduce the dismounting scaffold time used, reduce the requirement to bearing capacity of foundation soil, become those skilled in the art's technical problem urgently to be resolved hurrily.
Summary of the invention
In view of this, the invention provides a kind of high-altitude bulk process of bolt ball net frame, to reduce the consumption of material, reduce artificial waste, reduce the dismounting scaffold time used, reduce the requirement to bearing capacity of foundation soil.
For achieving the above object, the invention provides following technical scheme:
, comprise step:
1) local scaffold building;
2) quadrangular pyramid units installation on ground;
3) on local scaffold, carry out rack part assembled, and form rack starting across unit;
4) with described rack starting, across unit, adopt hanging device to carry out assembled, described hanging device is fixed to described rack starting across unit, and by this hanging device, described quadrangular pyramid units is lifted to high-altitude, assembled to the bilateral symmetry expansion of encorbelmenting across unit by the starting of described rack, until whole bolt-ball net frame is assembled complete.
Preferably, in above-mentioned high-altitude bulk process of bolt ball net frame, described step 1) be specially: to select bolt-ball net frame span direction adjacent two be local scaffold across the scope between four minimum lower edge support columns sets up region, and in this sets up region, sets up local scaffold.
Preferably, in above-mentioned high-altitude bulk process of bolt ball net frame, described rack starting is 2～5 mesh widths across unit.
Preferably, in above-mentioned high-altitude bulk process of bolt ball net frame, described rack starting is arranged by 1～2 row's lower edge grid and 2～3 grid that winds up across unit and is formed.
Preferably, in above-mentioned high-altitude bulk process of bolt ball net frame, described step 3) be specially: when rack part is assembled, first from two bearings that are no less than of one end, start starting, employing pushes away tripod and spells tripod technology, on the scaffold of having set up, carry out assembledly, be finally formed on rack starting that bearing place is no less than 4 supporting-points across unit.
Preferably, in above-mentioned high-altitude bulk process of bolt ball net frame, described hanging device specifically comprises:
Support body;
Be arranged at the hoist engine of described support body one end, one end of the wire rope of described hoist engine is provided with suspension hook;
Be arranged at the pulley of the described support body other end, the wire rope of described hoist engine is walked around described pulley.
Preferably, in above-mentioned high-altitude bulk process of bolt ball net frame, described support body is welded by external diameter 40mm, wall thickness 3.5mm steel pipe.
From above-mentioned technical scheme, can find out, high-altitude bulk process of bolt ball net frame provided by the invention, comprises step: 1) local scaffold building; 2) quadrangular pyramid units installation on ground; 3) on local scaffold, carry out rack part assembled, and form rack starting across unit; 4) with described rack starting, across unit, adopt hanging device to carry out assembled, described hanging device is fixed to described rack starting across unit, and by this hanging device, described quadrangular pyramid units is lifted to high-altitude, assembled to the bilateral symmetry expansion of encorbelmenting across unit by the starting of described rack, until whole bolt-ball net frame is assembled complete.
Based on above-mentioned steps, high-altitude bulk process of bolt ball net frame provided by the invention, be applicable to the installation of various large span bolt-ball net frame roof structure systems, can not need large-scale construction equipment, operate easier, and only need set up a small amount of support scaffolding, thereby greatly improve efficiency, reduce labour intensity.The present invention has designed and produced easy lifting appliance on the basis that cannot use large-scale lifting appliance, thereby by the high altitude bulk technological improvement of the full hall scaffold fetal membrane of bolt-ball net frame, be high altitude bulk technology on the local scaffold based on simple lifting equipment, measure expense and duration that the present invention saves are quite objective.The present invention can reduce by nearly 80% scaffold circulation material, according to existing market valency, scaffold is taken the cost of tearing approximately 20 yuan/every cube of contract for labour and materials open, (comprise 16 meters of the average scaffolding heights in ground, negative one deck increases by 6 meters of bearing heights), saving measure expense more than 180 ten thousand altogether, and local scaffold is taken and torn open than full hall frame construction period shortening 30 days simultaneously, brings huge economic benefit and management benefit.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is for adopting traditional handicraft full hall scaffold to set up the space truss structure schematic diagram of scope;
The high-altitude bulk process of bolt ball net frame flow chart that Fig. 2 provides for the embodiment of the present invention;
The space truss structure schematic diagram of the local scaffold building scope that Fig. 3 provides for the embodiment of the present invention;
The structural representation of the hanging device that Fig. 4 provides for the embodiment of the present invention;
The structural representation of the starting inter-network frame that Fig. 5 provides for the embodiment of the present invention;
The work progress schematic diagram of the hanging device that Fig. 6 provides for the embodiment of the present invention.
The specific embodiment
The invention discloses a kind of high-altitude bulk process of bolt ball net frame, to reduce the consumption of material, reduce artificial waste, reduce the dismounting scaffold time used, reduce the requirement to bearing capacity of foundation soil.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 2-Fig. 6, the high-altitude bulk process of bolt ball net frame flow chart that Fig. 2 provides for the embodiment of the present invention; The structural representation of the local scaffold that Fig. 3 provides for the embodiment of the present invention; The structural representation of the hanging device that Fig. 4 provides for the embodiment of the present invention; The structural representation of the starting inter-network frame that Fig. 5 provides for the embodiment of the present invention; The work progress schematic diagram of the hanging device that Fig. 6 provides for the embodiment of the present invention.
High-altitude bulk process of bolt ball net frame provided by the invention, comprising:
Step S11: local scaffold 2 is set up;
Through being familiar with drawing, the scope between adjacent four the minimum lower edge support columns of selection rack span direction is the region of setting up of local scaffold 2, carries out the design of scaffold building scheme according to working load, evaluates after qualified and carries out setting up of local scaffold 2.Conventionally along the middle part of rack to be assembled, set up local scaffold 2, the bearing place to rack to be assembled is all set up at the two ends of this part scaffold 2, so-called rack to be assembled is intrinsic bolt-ball net frame structure, the bearing place to rack to be assembled is all set up in the two ends of local scaffold 2, can guarantee that assembled space truss structure can be connected with bearing, improve stability.The two ends scaffolding height of local scaffold 2 should adapt with the grids height of design herein.Bearing is the concrete structure part of rack building structure, and rack belongs to the top of building structure.
Scaffold set up the following problem that should be noted that:
1) definite convenient operation of answering of local scaffold 2 scaffolding heights, if adjust absolute altitude with jack, local scaffold 2 upper surfaces are advisable apart from rack lower-chord panel point 80cm left and right; If do not adopt jack, rack upper surface is advisable apart from lower-chord panel point 20～30cm.
2) local scaffold 2 operating surfaces will completely spread scaffold floor, and scaffold floor is made of China fir or pine, its width >=200mm, and thickness >=50mm, two ends bind with 10～No. 14 zinc-coated wires, ban use of rotten plank.
3) in the scaffold floor surrounding of full paving, face limit, with 50 * 100 flitch, follow closely into little edge, prevent temporary transient rod member and the bolt sphere rolling landing of stacking in scaffold top.
4) local scaffold 2 should be considered top rack load, working load and completely spread scaffold floor deadweight through designing and calculating, checks its bearing capacity rigidity and stability.
Step S13: quadrangular pyramid units installation on ground;
The form of quadrangular pyramid units 5 has ball three bar types, ball four bar types etc., during assembled quadrangular pyramid units 5, should consider space truss structure type, lift by crane when in place and can not cause rod member to damage; Be no more than hanging device crane capacity; Encorbelment after installing and should form stabilising system.
The on-site consolidation of bolted spherical node quadrangular pyramid units 5 is according to the needs of programming, in advance that quadrangular pyramid junior unit body is assembled complete.When quadrangular pyramid units 5 is assembled, bolt once should be tightened, should be kept angle and size after assembled, to prevent Deformation Member, also want identifier number after assembled, be positioned over corresponding lifting position, to facilitate hanging device lifting, avoid rehandling.
Step S14: it is assembled to carry out rack part on local scaffold, and form rack starting across unit 4;
Along local scaffold 2, by the bearing place at two ends, to centre, carry out assembled rack starting across unit 4, be welded with two end bearings respectively after assembled, and dismantle bar shaped scaffold.Generally after assembled, also need to check assembled whether complete, correct, its absolute altitude position is checked, reach after designing requirement, (bearing is four altogether in the present embodiment with bearing, be respectively the first bearing 41 and second bearing 42 of left end, and the 3rd bearing 43 and the 4th bearing 44 that are positioned at right-hand member) be welded, the stable structure system that is enough to bear deadweight and working load formed.It should be noted that rack starting is to utilize the local scaffold 2 of having put up as operating platform across unit 4, loose mail or the smallest assembled rigid unit that assembles on ground are winched to high-altitude, by two end bearing places, to centre, carry out assembled completing.Rack starting across unit 4 assembled complete with bearing be welded fixing after, can across unit 4, carry out off-load to rack starting, remove local scaffold 2.
After having spelled quadrangular pyramid units, can carry out rack starting across the spelling of unit 4, rack starting completes assembled across unit 4 on the local scaffold 2 of having set up, rack starting is arranged by 1～2 row's lower edge grid and 2～3 grid that winds up across unit 4 and is formed, first from two bearings that are no less than of one end, start starting, employing pushes away tripod and spells tripod technology, on the local scaffold 2 of having set up, carry out assembled, finally be formed on rack starting that bearing place is no less than 4 supporting-points across unit 4, to form stabilising system.
Rack starting across the assembled order of unit 4 is: lower edge grid → web member and the node → upper chord that winds up.First according to designing requirement, lower-chord panel point is installed, then horizontal bars is installed, adjust after errorless and tight a bolt.When lower-chord panel point ball is installed, sagging in order to prevent rack, should first at lower-chord panel point ball place, set up temporary support, for there being its temporary supporting top of support of position of arch camber should meet design elevation requirement.Install lower edge rod member upper cord member can be installed, utilize assembled good quadrangular pyramid units 5 to carry out assembled, brace is finally installed again, through adjusting after errorless, tight a bolt.To be assembled completing behind three to four row unit, can be used hanging device lifting quadrangular pyramid units to carry out assembled, increases work efficiency, and so just risks a complete rack and has started to walk across unit 4.
After rack starting completes across unit 4 is assembled, the position of bar element, absolute altitude and support position, absolute altitude are checked, after meeting the requirements, bearing spot welding or bolt connection is temporary fixed, to guarantee not produce displacement in the installation process of rack below.
Step S15: adopt hanging device to carry out assembled across unit with described rack starting;
Hanging device 3 is fixed to the starting of described rack across unit, and by this hanging device by described quadrangular pyramid units 5 liftings to high-altitude, assembled to the bilateral symmetry expansion of encorbelmenting across the centre of unit 4 by described rack starting, until whole bolt-ball net frame is assembled complete.
According to the actual conditions of space truss structure and symmetrical feature, in order to reduce the accumulation of error of rack in assembled engineering, the spelling of whole rack should start across unit 4 from rack starting, proofreaies and correct at any time size, think rack starting errorless across unit 4 after therefrom mind-set both sides expansion.In assembled process, by hanging device 3, member erection is put in place, at design attitude, carry out assembled bolt.During lifting, according to parallel strip cell orientation, lift by row.The inverted triangle that first winds up cone is installed, and after row's installation, carries out the positive pyrometric cone of lower edge of next row and installs.
After assembled the completing of every row's grid, the position of this row's grid, absolute altitude, physical dimension, bolt tightening degree, amount of deflection and support position, absolute altitude are checked, after meeting the requirements, bearing spot welding or bolt are connected temporary fixed.
Afterwards by that analogy, risk whole rack, in assembled process, should proofread and correct at any time size, after confirmation meets designing requirement, can carry out the installation of next integral unit.
Rack starting is 2～5 mesh widths across unit 4, take to form that to be enough to bear the structural system of deadweight and working load be standard.Can not be wide, if the wide overlong time that local scaffold 2 retains, the construction of impact concrete structure below; Can not be narrow, narrowly cannot carry its deadweight, and the weight of other racks of installing of the method for encorbelmenting below.
Hanging device 3 provided by the invention specifically comprises support body 31, is arranged at the hoist engine 32 of described support body one end, and one end of the wire rope 33 of described hoist engine 32 is provided with suspension hook 34; Be arranged at the pulley of described support body 31 other ends, the wire rope 33 of described hoist engine 32 is walked around described pulley.Support body can be welded by external diameter 40mm, wall thickness 3.5mm steel pipe.
In sum, high-altitude bulk process of bolt ball net frame provided by the invention, be applicable to the installation of various large span bolt-ball net frame roof structure systems, can not need large-scale construction equipment, operate easier, and only need set up a small amount of support scaffolding, thereby greatly improve efficiency, reduce labour intensity.The present invention has designed and produced easy lifting appliance on the basis that cannot use large-scale lifting appliance, thereby by the high altitude bulk technological improvement of the full hall scaffold fetal membrane of bolt-ball net frame, be high altitude bulk technology on the local scaffold based on simple lifting equipment, measure expense and duration that the present invention saves are quite objective.The present invention can reduce by nearly 80% scaffold circulation material, according to existing market valency, scaffold is taken the cost of tearing approximately 20 yuan/every cube of contract for labour and materials open, (comprise 16 meters of the average scaffolding heights in ground, negative one deck increases by 6 meters of bearing heights), saving measure expense more than 180 ten thousand altogether, and local scaffold is taken and torn open than full hall frame construction period shortening 30 days simultaneously, brings huge economic benefit and management benefit.
In this manual, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment identical similar part mutually referring to.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the present invention.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (5)
1. a high-altitude bulk process of bolt ball net frame, is characterized in that, comprises step:
1) to select bolt-ball net frame span direction adjacent two be local scaffold across the scope between four minimum lower edge support columns sets up region, and in this sets up region, sets up local scaffold;
2) quadrangular pyramid units installation on ground;
3) rack is local when assembled, first from two bearings that are no less than of one end, starts starting, adopts and pushes away tripod and spell tripod technology, carries out assembledly on the scaffold of having set up, and is finally formed on rack starting that bearing place is no less than 4 supporting-points across unit;
4) with described rack starting, across unit, adopt hanging device to carry out assembled, described hanging device is fixed to described rack starting across unit, and by this hanging device, described quadrangular pyramid units is lifted to high-altitude, assembled to the bilateral symmetry expansion of encorbelmenting across unit by the starting of described rack, until whole bolt-ball net frame is assembled complete.
2. high-altitude bulk process of bolt ball net frame as claimed in claim 1, is characterized in that, described rack starting is 2～5 mesh widths across unit.
3. high-altitude bulk process of bolt ball net frame as claimed in claim 2, is characterized in that, described rack starting is arranged by 1～2 row's lower edge grid and 2～3 grid that winds up across unit and formed.
4. the high-altitude bulk process of bolt ball net frame as described in claim 1-3 any one, is characterized in that, described hanging device specifically comprises:
Support body;
Be arranged at the hoist engine of described support body one end, one end of the wire rope of described hoist engine is provided with suspension hook;
Be arranged at the pulley of the described support body other end, the wire rope of described hoist engine is walked around described pulley.
5. high-altitude bulk process of bolt ball net frame as claimed in claim 4, is characterized in that, described support body is welded by external diameter 40mm, wall thickness 3.5mm steel pipe.
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| CN201110196872.6A CN102345393B (en) | 2011-07-14 | 2011-07-14 | High-altitude bulk process of bolt ball net frame |
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| CN201110196872.6A CN102345393B (en) | 2011-07-14 | 2011-07-14 | High-altitude bulk process of bolt ball net frame |
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| 大跨度拱形网架结构施工方法研究;马耀卿;《西安建筑科技大学学位论文》;20080930;第11页第2.1.4节 * |
| 李田俊等.中国地质大学(北京)综合游泳馆钢网架结构施工技术.《青岛理工大学学报》.2010,(第05期),第4章4.3节第1段第1行，第2段第2-4行，图1. |
| 马耀卿.大跨度拱形网架结构施工方法研究.《西安建筑科技大学学位论文》.2008,第11页第2.1.4节. |
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