CN102345393A - 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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- CN102345393A CN102345393A CN2011101968726A CN201110196872A CN102345393A CN 102345393 A CN102345393 A CN 102345393A CN 2011101968726 A CN2011101968726 A CN 2011101968726A CN 201110196872 A CN201110196872 A CN 201110196872A CN 102345393 A CN102345393 A CN 102345393A
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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 bolt-ball net frame high altitude bulk technology.
Background technology
Bolt-ball net frame high altitude bulk technology is present comparatively general steel structure net rack construction technology, and this technology adopts steel pipe scaffold to set up full hall rack assembly unit fetal membrane usually, and the constructor carries out the rack installation on full hall fetal membrane frame.The high altitude bulk method is simple to operation; Speed of application is fast, saves manual work, can reduce field Welding; Reduced pollution to surrounding environment; Particular job environment that does not possess big machinery lifting and whole lifting condition at the scene can better guarantee workmanship down, reduction engineering cost, realization energy-saving and emission-reduction and green construction.
Certain sports palace engineering roofing agent structure is the bolt sphere steel grid structure, and supporting form is the supporting of lower edge pin deck.Be limited to the execute-in-place environment; Can't adopt job practicess such as whole lifting, high-altitude slippage; The construction plant also can't install realization piecemeal adding types such as large-scale lifting appliance mast hangs and promote, so can only adopt high altitude bulk on the full hall scaffold 1 as shown in Figure 1 on the 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, add that average 16 meters high scaffold deadweight is about 2KN/m
2, floor can't bear upper load, and a negative layer height is 6 meters, must carry out consolidation process, sets up full hall scaffold at the correspondence position of setting up the zone equally, and upper load is passed to the basis.
Adopt the full hall of tradition scaffold job practices, need the scaffold of labor, 16 meters construction scaffoldings and 6 meters reinforcing scaffolds of negative one deck are through not exclusively calculating the about 70 meters scaffold tubes of every square meter and 65 fasteners.The scaffold support system of square meter more than 5000 thus, not only waste is very big on material, and just only scaffold take and tear the labor manpower and materials open, construction cost is quite big, also corresponding increase of duration.
Adopt the assembly unit fetal membrane of full hall scaffold, need in whole rack overlay area, set up scaffold, and completely spread scaffold floor at the scaffold top as the rack construction.All set up average 16 meters high full hall scaffold in the present case under 5400 square metres the projected area, the circulation material of consumption is suitable considerable.If carry under the hypodynamic situation at base plate, also need set up full hall frame in negative 6 meters high same area of one deck and support, increased a large amount of circulation materials again, impel cost to increase greatly.So big scaffold is taken and is torn operation open, needs to drop into a large amount of specialty personnel of setting up and sets up not only consumable material, and lost labor.
Adopt high altitude bulk on the full hall scaffold, a large amount of scaffolds take tear open need 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 very big influence.Simultaneously; The rack roofing construction is a critical process; Not only take a large amount of construction plants, and bring restriction for subsequent handlings such as hall ground construction, peripheral curtain wall construction and indoor hard-cover operation, in case the rack roofing construction period lags behind; Make a big impact for other each specialties, directly influence the realization of total duration target.
Adopt high altitude bulk on the full hall scaffold; Need all lift to scaffold assembly unit fetal membrane near 300 tons rod members and bolt sphere, and then carry out assembly unit, cause the high-altitude rehandling of rack material; Not only there is bigger potential safety hazard; And workman's work high above the ground, efficient reduces greatly, brings very big influence for the progress of engineering.
In sum, adopt full hall scaffold in construction, to have following defective:
1, a full hall rack assembly unit scaffold not only need take a large amount of circulation materials, and shelf to take the amount of tearing open big, the construction operation phase is long.
2, the rack construction needs enough bearing capacity of foundation soil with full hall scaffold building; For venue class competition hall floor; Design floor bearing capacity can't satisfy deadweight of full hall support body and top rack working load, need increase at bottom to support, and consumes more circulation material and cost.
3, the rack material all need lift to full hall scaffold, and rod member and bolt sphere disperse stacking need take measures to prevent that the club body from rolling, falling on the plane, have big potential safety hazard.
Therefore, how to reduce the consumption of material, reduce artificial waste, reduce the dismounting used time of scaffold, reduce requirement, become the technical problem that those skilled in the art need to be resolved hurrily bearing capacity of foundation soil.
Summary of the invention
In view of this, the invention provides a kind of bolt-ball net frame high altitude bulk technology,, reduce artificial waste, reduce the dismounting used time of scaffold, reduce requirement bearing capacity of foundation soil to reduce the consumption of material.
For realizing above-mentioned purpose, the present invention provides following technical scheme:
A kind of bolt-ball net frame high altitude bulk technology comprises step:
1) local scaffold building;
2) quadrangular pyramid units installation on ground;
3) on local scaffold, carry out the local assembly unit of rack, and the unit is striden in the starting of formation rack;
4) striding the unit with said rack starting adopts hanging device to carry out assembly unit; Said hanging device is fixed to said rack starting and strides the unit; And through this hanging device with the lifting of said quadrangular pyramid units to the high-altitude; Stride the unit to the bilateral symmetry expansion assembly unit of encorbelmenting, until whole bolt-ball net frame assembly unit is finished by the starting of said rack.
Preferably; In above-mentioned bolt-ball net frame high altitude bulk technology; Said step 1) is specially: the scope of selecting bolt-ball net frame span direction adjacent two to stride between four minimum lower edge support columns is the zone of setting up of local scaffold, and in this sets up the zone, sets up local scaffold.
Preferably, in above-mentioned bolt-ball net frame high altitude bulk technology, it is 2～5 mesh widths that the unit is striden in said rack starting.
Preferably, in above-mentioned bolt-ball net frame high altitude bulk technology, the starting of said rack is striden the unit and is made up of 1～2 row's lower edge grid and 2～3 rows grid that winds up.
Preferably; In above-mentioned bolt-ball net frame high altitude bulk technology; Said step 3) is specially: during the assembly unit of rack part, earlier since two the bearings startings that are no less than of an end, adopt tripod and the assembly tripod technology of pushing away; On the scaffold of having set up, carry out assembly unit, finally be formed on the rack starting that the bearing place is no less than 4 supporting-points and stride the unit.
Preferably, in above-mentioned bolt-ball net frame high altitude bulk technology, said hanging device specifically comprises:
Support body;
Be arranged at the hoist engine of said support body one end, an end of the wire rope of said hoist engine is provided with suspension hook;
Be arranged at the pulley of the said support body other end, the wire rope of said hoist engine is walked around said pulley.
Preferably, in above-mentioned bolt-ball net frame high altitude bulk technology, said support body is formed by external diameter 40mm, wall thickness 3.5mm steel pipe weldering system.
Can find out that from above-mentioned technical scheme bolt-ball net frame high altitude bulk technology provided by the invention comprises step: 1) local scaffold building; 2) quadrangular pyramid units installation on ground; 3) on local scaffold, carry out the local assembly unit of rack, and the unit is striden in the starting of formation rack; 4) striding the unit with said rack starting adopts hanging device to carry out assembly unit; Said hanging device is fixed to said rack starting and strides the unit; And through this hanging device with the lifting of said quadrangular pyramid units to the high-altitude; Stride the unit to the bilateral symmetry expansion assembly unit of encorbelmenting, until whole bolt-ball net frame assembly unit is finished by the starting of said rack.
Based on above-mentioned steps; Bolt-ball net frame high altitude bulk technology provided by the invention is 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 improve efficiency greatly, reduce labour intensity.The present invention has designed and produced easy lifting appliance on the basis that can't use large-scale lifting appliance; Thereby with the high altitude bulk technological improvement of the full hall scaffold fetal membrane of bolt-ball net frame be that the measure expense and the duration of the present invention's saving are quite objective based on high altitude bulk technology on the local scaffold of simple lifting equipment.The present invention can reduce by nearly 80% scaffold circulation material; According to the existing market valency, scaffold is taken about 20 yuan/every cube cost of worker's construction materials contract of unpacking, and (comprises 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.
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; Obviously, the 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.
Fig. 1 is for adopting the space truss structure sketch map of the full hall of traditional handicraft scaffold building scope;
The bolt-ball net frame high altitude bulk process chart that Fig. 2 provides for the embodiment of the invention;
The space truss structure sketch map of the local scaffold building scope that Fig. 3 provides for the embodiment of the invention;
The structural representation of the hanging device that Fig. 4 provides for the embodiment of the invention;
The structural representation of the starting inter-network frame that Fig. 5 provides for the embodiment of the invention;
The work progress sketch map of the hanging device that Fig. 6 provides for the embodiment of the invention.
The specific embodiment
The invention discloses a kind of bolt-ball net frame high altitude bulk technology,, reduce artificial waste, reduce the dismounting used time of scaffold, reduce requirement bearing capacity of foundation soil to reduce the consumption of material.
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, 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 are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
See also Fig. 2-Fig. 6, the bolt-ball net frame high altitude bulk process chart that Fig. 2 provides for the embodiment of the invention; The structural representation of the local scaffold that Fig. 3 provides for the embodiment of the invention; The structural representation of the hanging device that Fig. 4 provides for the embodiment of the invention; The structural representation of the starting inter-network frame that Fig. 5 provides for the embodiment of the invention; The work progress sketch map of the hanging device that Fig. 6 provides for the embodiment of the invention.
Bolt-ball net frame high altitude bulk technology provided by the invention comprises:
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 zone of setting up of local scaffold 2, carries out the scaffold building design for scheme according to working load, evaluates and carries out setting up of local scaffold 2 after qualified.Usually set up local scaffold 2 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 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 at the two ends of local scaffold 2, can guarantee that the space truss structure of assembly unit can link to each other with bearing, improve stability.The two ends scaffolding height of local scaffold 2 should adapt with the rack height of design here.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) the definite of local scaffold 2 scaffolding heights should be convenient to operation, if adjust absolute altitude with jack, then local scaffold 2 upper surfaces are advisable apart from about rack lower-chord panel point 80cm; If do not adopt jack, then rack upper surface is advisable apart from lower-chord panel point 20～30cm.
2) local scaffold 2 operating surfaces will completely be spread scaffold floor, and scaffold floor is made with 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) around the scaffold floor of full shop, face the limit, follow closely into little edge, prevent temporary transient rod member and the bolt sphere rolling landing of stacking in scaffold top with 50 * 100 flitch.
4) local scaffold 2 should be considered top rack load, working load and completely spread scaffold floor deadweight, checking computations its bearing capacity rigidity and stability through designing and calculating.
Step S13: quadrangular pyramid units installation on ground;
The form of quadrangular pyramid units 5 has a ball three bar types, a ball four bar types etc., and during assembly unit quadrangular pyramid units 5, the type of considered space truss structure, lifting can not cause rod member to damage when in place; Be no more than the hanging device crane capacity; Encorbelment and to form stabilising system after installing.
The on-site consolidation of bolted spherical node quadrangular pyramid units 5 finishes the assembly unit of quadrangular pyramid junior unit body according to the needs of programming in advance.During quadrangular pyramid units 5 assembly units, should bolt once be tightened, should keep angle and size after the assembly unit,, be positioned over corresponding lifting position,, avoid rehandling to make things convenient for the hanging device lifting in case identifier number is also wanted in the distortion of stopping bar spare after the assembly unit.
Step S14: on local scaffold, carry out the local assembly unit of rack, and unit 4 is striden in the starting of formation rack;
Carry out assembly unit rack starting by the bearing place at two ends to the centre along local scaffold 2 and stride unit 4, 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 complete, correct, its absolute altitude position is checked, reach designing requirement after; (bearing is four altogether in the present embodiment with bearing; Be respectively 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 it is to utilize the local scaffold of having put up 2 as operating platform that unit 4 is striden in rack starting, loose mail or the little assembly unit that assembles on ground are winched to the high-altitude, carry out to the centre by two end bearing places that assembly unit accomplishes.Rack starting stride unit 4 assembly unit completion and bearing be welded fixing after, can start to walk to stride unit 4 to rack and carry out off-load, remove local scaffold 2.
Can carry out the spelling that unit 4 is striden in the rack starting after having pieced together quadrangular pyramid units; The rack starting is striden unit 4 and on the local scaffold of having set up 2, is accomplished assembly unit; Rack starting is striden unit 4 and is made up of 1～2 row's lower edge grid and 2～3 rows grid that winds up; Since two the bearing startings that are no less than of an end, adopt to push away tripod and piece together the tripod technology earlier, on the local scaffold of having set up 2, carry out assembly unit; Finally be formed on the rack starting that the bearing place is no less than 4 supporting-points and stride unit 4, to form stabilising system.
The assembly unit that unit 4 is striden in the rack starting is in proper order: the lower edge grid → web member and the node → upper chord that winds up.At first lower-chord panel point is installed, horizontal bars is installed again, adjust and tight a bolt after errorless according to designing requirement.When the lower-chord panel point ball is installed, sagging in order to prevent rack, should set up interim bracing frame at lower-chord panel point ball place earlier, should meet the design elevation requirement for its interim bracing frame end face of the position that arch camber is arranged.Install the lower edge rod member upper cord member can be installed, utilize the good quadrangular pyramid units of assembly unit 5 to carry out assembly unit, brace is installed at last again, after adjustment is errorless, tight a bolt.Behind completion to be assembled three to the four row unit, can use hanging device lifting quadrangular pyramid units to carry out assembly unit, increase work efficiency, so just risk a complete rack starting and striden unit 4.
The rack starting is checked position, absolute altitude and support position, the absolute altitude of bar element after striding unit 4 assembly units completion, and is after meeting the requirements that bearing spot welding or bolt connection is temporary fixed, in the installation process of back, do not produce displacement to guarantee rack.
Step S15: stride the unit with said rack starting and adopt hanging device to carry out assembly unit;
Hanging device 3 is fixed to the starting of said rack and strides the unit, and through this hanging device with said quadrangular pyramid units 5 liftings to the high-altitude, the centre of being striden unit 4 by said rack starting is to the bilateral symmetry expansion assembly unit of encorbelmenting, until whole bolt-ball net frame assembly unit is finished.
Actual conditions and symmetrical characteristics according to space truss structure; In order to reduce the accumulation of error of rack in the assembly unit engineering; The spelling of whole rack should be striden unit 4 beginnings from the rack starting, proofreaies and correct size at any time, think the rack starting stride unit 4 errorless after therefrom the mind-set both sides launch.By hanging device 3 the rod member lifting is put in place in the assembly unit process, carry out the assembly unit bolt at design attitude.According to the parallel strip cell orientation, lift by row during lifting.The inverted triangle that winds up earlier awl is installed, and after row's installation, carries out next row's the positive pyrometric cone of lower edge and installs.
After every row's grid assembly unit is accomplished, to position, absolute altitude, physical dimension, the bolt of this row grid tighten degree, amount of deflection and support position, absolute altitude is checked, and is after meeting the requirements, that bearing spot welding or bolt connection is temporary fixed.
Afterwards by that analogy, risk whole rack, should proofread and correct size at any time in the assembly unit process, can carry out the installation of next integral unit after confirming to adhere to specification.
It is 2～5 mesh widths that unit 4 is striden in rack starting, 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 local scaffold 2 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 the method for encorbelmenting of back installation.
Hanging device 3 provided by the invention specifically comprises support body 31, is arranged at the hoist engine 32 of said support body one end, and an end of the wire rope 33 of said hoist engine 32 is provided with suspension hook 34; Be arranged at the pulley of said support body 31 other ends, the wire rope 33 of said hoist engine 32 is walked around said pulley.Support body can be formed by external diameter 40mm, wall thickness 3.5mm steel pipe weldering system.
In sum; Bolt-ball net frame high altitude bulk technology provided by the invention is 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 improve efficiency greatly, reduce labour intensity.The present invention has designed and produced easy lifting appliance on the basis that can't use large-scale lifting appliance; Thereby with the high altitude bulk technological improvement of the full hall scaffold fetal membrane of bolt-ball net frame be that the measure expense and the duration of the present invention's saving are quite objective based on high altitude bulk technology on the local scaffold of simple lifting equipment.The present invention can reduce by nearly 80% scaffold circulation material; According to the existing market valency, scaffold is taken about 20 yuan/every cube cost of worker's construction materials contract of unpacking, and (comprises 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.
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 General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments among this paper.Therefore, the present invention will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (7)
1. a bolt-ball net frame high altitude bulk technology is characterized in that, comprises step:
1) local scaffold building;
2) quadrangular pyramid units installation on ground;
3) on local scaffold, carry out the local assembly unit of rack, and the unit is striden in the starting of formation rack;
4) striding the unit with said rack starting adopts hanging device to carry out assembly unit; Said hanging device is fixed to said rack starting and strides the unit; And through this hanging device with the lifting of said quadrangular pyramid units to the high-altitude; Stride the unit to the bilateral symmetry expansion assembly unit of encorbelmenting, until whole bolt-ball net frame assembly unit is finished by the starting of said rack.
2. bolt-ball net frame high altitude bulk technology as claimed in claim 1; It is characterized in that; Said step 1) is specially: the scope of selecting bolt-ball net frame span direction adjacent two to stride between four minimum lower edge support columns is the zone of setting up of local scaffold, and in this sets up the zone, sets up local scaffold.
3. bolt-ball net frame high altitude bulk technology as claimed in claim 1 is characterized in that, it is 2～5 mesh widths that the unit is striden in said rack starting.
4. bolt-ball net frame high altitude bulk technology as claimed in claim 3 is characterized in that, the starting of said rack is striden the unit and is made up of 1～2 row's lower edge grid and 2～3 rows grid that winds up.
5. bolt-ball net frame high altitude bulk technology as claimed in claim 1; It is characterized in that; Said step 3) is specially: during the assembly unit of rack part, earlier since two the bearings startings that are no less than of an end, adopt tripod and the assembly tripod technology of pushing away; On the scaffold of having set up, carry out assembly unit, finally be formed on the rack starting that the bearing place is no less than 4 supporting-points and stride the unit.
6. like each described bolt-ball net frame high altitude bulk technology of claim 1-5, it is characterized in that said hanging device specifically comprises:
Support body;
Be arranged at the hoist engine of said support body one end, an end of the wire rope of said hoist engine is provided with suspension hook;
Be arranged at the pulley of the said support body other end, the wire rope of said hoist engine is walked around said pulley.
7. bolt-ball net frame high altitude bulk technology as claimed in claim 6 is characterized in that, said support body is formed by external diameter 40mm, wall thickness 3.5mm steel pipe weldering system.
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| 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 |
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