CN104264999B - A kind of assembling of large-scale Roof Latticed Truss Structure and installation method - Google Patents
A kind of assembling of large-scale Roof Latticed Truss Structure and installation method Download PDFInfo
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Abstract
The assembling of large-scale Roof Latticed Truss Structure and an installation method, belong to high-altitude long-span grid structure installation method technical field, for assembling and the installation of large-scale Roof Latticed Truss Structure. The present invention arranges operating platform outside grid structure overlay area, on operating platform, carry out the assembly work of grid structure, adopt sliding rail to carry out slippage assembling to the grid structure assembling, adopt hydraulic pressure creep machine that slippage power is provided, can under the prerequisite that keeps grid structure resistance to overturning, carry out slippage to rack in place. The assembling of large-scale Roof Latticed Truss Structure of the present invention and installation method design science are reasonable, implement simple and convenient, ensure construction quality, improve speed of application, and can not affect various constructions and activity in production in grid structure overlay area, there is significant economic benefit, have the value of generally promoting.
Description
Technical field
The assembling and the installation method that the present invention relates to a kind of large-scale Roof Latticed Truss Structure for industry, agricultural, market and recreational facilities, belong to high-altitude long-span grid structure installation method technical field.
Background technology
Along with produce development and the needs of people's lives, many large-scale Roof Latticed Truss Structure are widely used in the places such as industrial premises, agricultural greenhouse, the market of farm produce and botanical garden, zoo, recreation ground, for people's work and life provide important space for activities. At present, the erection method of the Roof Latticed Truss Structure of large span mainly contains loose spelling, moulding bed Mobile Method. Loose spelling starts to assemble on the ground a bit of rack exactly, and after utilizing crane to lift to install, more aloft loose mail is installed, and advances step by step, finishes until install. And moulding bed Mobile Method is the shape according to rack roofing, moulding bed of fabrication and installation in advance, moulding bed is placed on the below of large-size net rack structure, carry out the assembling of rack in moulding bed upper end, after the rack of one junior unit assembles, installs, moulding bed moves forward certain distance on ground, continues next unit and installs, until whole grid structure installs. From construction method, these two kinds of methods all have higher requirement to place, method in bulk requires must not there be any facility in rack length areas, otherwise cannot lift and consolidation service, moulding bed Mobile Method need provide the installation site of installing space and the moulding bed moving track of moulding bed, therefore two kinds of methods all can impact the normal operation of all constructions or production facility in rack region, cause the shortcomings such as construction speed is slow, long in time limit. For this reason, designing a kind of can be very necessary at the installation method that does not affect in rack region the normal operation of construction or production facility.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of assembling and installation method of large-scale Roof Latticed Truss Structure, this assembling and installation method can, in the situation that not affecting in installation region the normal operation of all devices, overcome other installation method the higher difficulty of site requirements is spliced to installation to high-altitude long-span Roof Latticed Truss Structure.
The technical scheme solving the problems of the technologies described above is:
The assembling of large-scale Roof Latticed Truss Structure and an installation method, it takes following steps to carry out:
A. be the operating platform of setting up steel structure frame in one end of the extra-regional grid structure longitudinal axis of grid structure covering, the outline of operating platform and the lower surface of grid structure match, and the width of operating platform is the width of a junior unit rack;
B. lay sliding rail at the isolated footing end face that grid structure both sides are installed along the length direction of grid structure, sliding rail is laid with respect to side, isolated footing in outside at operating platform simultaneously, and the sliding rail in operating platform outside is connected with the sliding rail of isolated footing end face;
C. adopt crane by the rack material lift of assembling grid structure to operating platform, erection support on the sliding rail of operating platform, has piston shoes between bearing and sliding rail, then on bearing, adopts high altitude bulk form assembling junior unit rack;
D. assembled after a junior unit rack, utilize junior unit rack that the sliding rail on operating platform completes assembling along the y direction of grid structure forward slippage to the sliding rail of isolated footing end face;
E. continue to assemble another junior unit rack on operating platform, then slippage is connected with previous junior unit rack to the sliding rail of isolated footing end face;
F. after many junior unit racks have been accumulated a big unit rack, integrated moving to rack installation site is carried out in place;
G. after a big unit Integral in-position, with multiple jack synchronization of jacking up bearings position, take piston shoes and the sliding rail of bearing below away, then multiple jack slowly synchronously drop to each bearing to predetermined support position fixing;
H. repeat above-mentioned flow process, until integral net shelf structure erection is complete.
The assembling of above-mentioned large-scale Roof Latticed Truss Structure and installation method, bottom and side at bearing respectively arrange an elongated sliding rail, adopt two piston shoes synchronization-slidings, translational speed is controlled in 20cm/min, the asynchronous value at grid structure two ends is controlled in 30 millimeters, therefore need be on sliding rail graduate line, 25mm is a scale, in the each arrangement of grid structure hitch position, a detection person carries out count off, report mutually the particular location of side supports in grid structure slipping with intercom, to proofread and correct at any time the hauling speed of both sides.
The assembling of above-mentioned large-scale Roof Latticed Truss Structure and installation method, hydraulic pushing mode is taked in the slippage of described grid structure, utilize hydraulic pressure creep machine that slippage power is provided, many hydraulic pressure creep machines combine, multiple spot push-and-pull, the member of decentralized network shelf structure, slippage beam stressed detects propulsive force and the speed of hydraulic pressure creep machine in slipping by sensor, control the coordinate synchronization between each hydraulic pressure creep machine.
The invention has the beneficial effects as follows:
The present invention arranges operating platform outside grid structure overlay area, carries out the assembly work of grid structure on operating platform, therefore can avoid installation because of the grid structure impact on construction installation and production facility; Adopt sliding rail to carry out slippage assembling to the grid structure assembling, can under the prerequisite that keeps grid structure resistance to overturning, carry out slippage to rack in place, be convenient to form the continuous productive process of identical rhythm, each continuous productive process process is independent of each other, and the requirement of loose mail hanging device is reduced greatly; Adopt hydraulic pressure creep machine that slippage power is provided, in slipping, can not make because there being the extension of flexible steel twisted wire steel construction shake or vibration, in slipping, detected propulsive force and the speed of hydraulic pressure creep machine by sensor by computer system, control the coordinate synchronization between each hydraulic pressure creep machine, propulsive force and fltting speed can survey completely, controlled, when there being unexpected overload or synchronous when overproof, system can adjust and send alarm signal in time, thereby makes slipping more safe and reliable.
The assembling of large-scale Roof Latticed Truss Structure of the present invention and installation method design science are reasonable, implement simple and convenient, ensure construction quality, improve speed of application, and can not affect various constructions and activity in production in grid structure overlay area, there is significant economic benefit, have the value of generally promoting.
Brief description of the drawings
Fig. 1 is operating platform of the present invention and sliding rail mounting plane schematic diagram;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is sliding rail scheme of installation; (please marking in the drawings bearing 7, piston shoes 8)
Fig. 4 is the scheme of installation of hydraulic pressure creep machine.
In figure, mark is as follows: operating platform 1, sliding rail 2, grid structure 3, A section grid structure 4, B section grid structure 5, C section grid structure 6, bearing 7, piston shoes 8, hydraulic pressure creep machine 9, hydraulic jack 10, clamping device 11, thrustor 12.
Detailed description of the invention
The present invention takes following steps to carry out:
A. be the operating platform 1 of setting up steel structure frame in one end of the extra-regional grid structure longitudinal axis of grid structure covering, the lower surface of the outline of operating platform 1 and grid structure 3 matches, and the width of operating platform 1 is the width of a junior unit rack;
B. lay sliding rail 2 at the isolated footing end face of the both sides that grid structure 3 is installed along the length direction of grid structure, sliding rail 2 is laid in outside at operating platform 1 simultaneously, and the sliding rail 2 in operating platform 1 outside is connected with the sliding rail 2 of isolated footing end face;
C. adopt crane by assembling grid structure 3 rack material lift to operating platform 1, erection support 7 on the sliding rail 2 of operating platform 1, between bearing 7 and sliding rail 2, there are piston shoes 8, then on bearing 7, adopt high altitude bulk form assembling junior unit rack;
D. assembled after a junior unit rack, utilize junior unit rack that the sliding rail 2 on operating platform 1 completes assembling along the y direction of grid structure 3 forward slippage to the sliding rail 2 of isolated footing end face;
E. continue to assemble another junior unit rack on operating platform 1, then slippage is connected with previous junior unit rack to the sliding rail 2 of isolated footing end face;
F. after many junior unit racks have been accumulated a big unit rack, integrated moving to rack installation site is carried out in place;
G. after a big unit Integral in-position, with multiple jack synchronization of jacking up bearing 7 positions, take piston shoes 8 and the sliding rail 2 of bearing 7 belows away, then multiple jack slowly synchronously drop to each bearing 7 to predetermined support position fixing;
H. repeat above-mentioned flow process, until integral net shelf structure 3 erections are complete.
In figure, show, bottom and side at bearing 7 respectively arrange an elongated sliding rail 2, adopt two piston shoes 8 synchronization-slidings, translational speed is controlled in 20cm/min, the asynchronous value at grid structure 3 two ends is controlled in 30 millimeters, therefore need be on sliding rail 2 graduate line, 25mm is a scale, in the each arrangement of grid structure hitch position, a detection person carries out count off, report mutually the particular location of side supports 7 in grid structure 3 slippings with intercom, to proofread and correct at any time the hauling speed of both sides.
In figure, show, hydraulic pushing mode is taked in the slippage of grid structure 3, utilize hydraulic pressure creep machine 9 that slippage power is provided, the hydraulic jack 10 of hydraulic pressure creep machine 9 is contacted and holds out against with grid structure 3 by thrustor 12, the clamping device 11 of hydraulic pressure creep machine 9 is clamped on sliding rail 2, as the fulcrum of pushing tow. Many hydraulic pressure creep machines 9 combine, multiple spot push-and-pull, and the member of decentralized network shelf structure 3, slippage beam stressed detects propulsive force and the speed of hydraulic pressure creep machine 9 in slipping by sensor, control the coordinate synchronization between each hydraulic pressure creep machine 9. Adopt hydraulic pressure creep machine 9 in slipping, can not make because there being the extension of flexible steel twisted wire steel construction shake or vibration, ensure that each position synchronization-sliding is to guarantee the resistance to overturning of rack in slipping. One embodiment of the present of invention adopt TJG-1000KN type hydraulic pressure creep machine.
In slipping, on sliding rail 3, take the measures such as coating butter, reduce coefficient of friction as far as possible.
One embodiment of the present of invention are as follows:
Project profile:
Certain enterprise's blending-field double-layer circular cylinder space grid structure factory building total length is 538.8m, and span is 104m, rise 39.4m, and weight reaches 5200 tons, and rod member quantity reaches 40,000, more than 9000, ball.
Grid structure is divided into tri-sections of A, B, C. Be that 1-20 axle is A section by axis lattice, 21-42 axle is B section, and 43-62 axle is C section. A section total length is 173.5m, weight 1532t, and partial slip, skidding distance is 109 meters; B section total length is 191.18m, weight 1634t, and all slippages, skidding distance is 292 meters; C section rack is all 173.5m with A section, weight 1532t, and all slippages, skidding distance is 465 meters.
This rack adopts basket handle arch version; Its mid-level net shell center of circle is: R74667, and even 44 deciles, both sides are even 11 deciles of R21445, and rack adopts and is just putting quadrangular pyramid, and ball center's size comprises that lower edge equalization is divided into 4345, laterally divides equally by upper and lower chord length.
Grid structure installation process:
Rack is installed the scheme that adopts " accumulation slippage; segmentation is installed ", first at horizontal 104 meters, in the place of longitudinal 30 meters, set up full hall scaffold, scaffold provides workbench for installing, and before grid structure is installed, adopts vapour to hang rack material lift to the landing stage of scaffold, material is disperseed in time, then adopt high altitude bulk form to install.
The rack of C section 62 ~ 60 axles is first installed, the rack installation of the first 26.07 meters of block lengths, slippage goes out workbench, carrying out second rack installs, then by first slippage forward together with second, then the 3rd rack installed, so analogize accumulation slippage and complete C section grid structure 6 and install, then by C section grid structure 6 from 1 axle toward 62 slowly slippages of direction of principal axis entirety.
In order to control the deflection of grid structure, ensure the synchronism of slippage, bottom and side at bearing respectively arrange an elongated sliding rail, adopt two piston shoes synchronization-slidings, translational speed is controlled in 20cm/min, the asynchronous value in two ends is controlled in 30 millimeters, therefore need be on sliding rail graduate line, 25mm is a scale, in the each arrangement of net shell hitch position, a detection person carries out count off, report mutually the particular location of rack side supports in slipping with intercom, to proofread and correct at any time the hauling speed of both sides.
After C section grid structure 6 integral slipping to 43 axle to 62 axle places are in place, bearing position keeps flat simultaneously and uses jack jacking, then takes piston shoes and sliding rail away, then slowly synchronously drops to each support position fixing. When 6 slippages of C section grid structure go out after the landing stage of scaffold, B section grid structure 5 will begin in a minute assembled, and repeats above-mentioned flow process, until A section grid structure 4 installs.
Technical requirement when rack is installed:
Entirety rack is indulged lateral length after installing and is not more than L/2000, and is not more than 30mm, and bearing off-centring is not more than L/3000, and is not more than 30mm;
The adjacent bearing discrepancy in elevation is not more than 15mm, and the highest and minimum point bearing discrepancy in elevation is not more than 30mm;
Within unloaded amount of deflection is controlled at L/800;
All the other technical requirements are identical with the technical requirement that conventional rack is installed, and are prior art, repeat no more.
Grid structure is stressed checking computations in the time of slippage:
To grid structure in each stage accumulation slippage process, least favorable situation while leaving support slippage by grid structure, must check the maximum internal force of its rod member and maximum defluxion, while supposing rack slippage, have 30mm out of step conditions, (MST2006 space structure software for calculation checks) result of calculation is as follows:
The maximum internal force of each stage rack, maximum stress, maximum defluxion, maximum end reaction table
S1: first rack assembled the rear slippage stage;
S2: slippage stage after second rack installation;
S3: slippage stage after the 3rd rack installation;
S4: slippage stage after the 4th rack installation;
The slippage stage after the integral installation of S5:C section rack completes.
Checking computation results shows in slipping, all do not have overstressing rod member to occur, rack part and bulk deformation all meet design requirement.
The configuration of slippage equipment:
Rack accumulation segmental slipping, along with the increase of slippage rack Pin number, the jacking force needing also increases step by step, so, first analyze rack in the end reaction of installing under operating mode, draw pedestal frictional force, according to the size reasonable configuration crawl device quantity of frictional force.
The maximum slippage weight of blending-field rack is about 1700 tons, and according to the experience of engineering in the past, it is 0.12 that slippage confficient of static friction is got the 0.2(coefficient of kinetic friction), maximal friction is f=0.2x1700=340 ton.
Blending-field rack is totally 2 sliding rails, each rack is arranged 6 TJG-1000KN type hydraulic pressure creep machines, 3, every track, the specified jacking force of every hydraulic pressure creep machine is 100t, 6 available maximum slippage thrust ∑ F of crawl device are 600 tons, required pushing reaction while being greater than rack integral slipping, meets the requirement of slippage operating mode.
Claims (3)
1. the assembling of large-scale Roof Latticed Truss Structure and an installation method, is characterized in that: it takes following steps to carry out:
A. be the operating platform (1) of setting up steel structure frame in one end of the extra-regional grid structure longitudinal axis of grid structure (3) covering, the lower surface of the outline of operating platform (1) and grid structure (3) matches, and the width of operating platform (1) is the width of a junior unit rack;
B. lay sliding rail (2) at the isolated footing end face of the both sides that grid structure (3) is installed along the length direction of grid structure (3), lay sliding rail (2) in the outside of operating platform (1), the sliding rail (2) in operating platform (1) outside is connected with the sliding rail (2) of isolated footing end face simultaneously;
C. the rack material lift that adopts crane will assemble grid structure (3) arrives on operating platform (1), the upper erection support (7) of sliding rail (2) in operating platform (1), between bearing (7) and sliding rail (2), there are piston shoes (8), then at the upper high altitude bulk form assembling junior unit rack that adopts of bearing (7);
D. assembled after a junior unit rack, utilize junior unit rack that the sliding rail (2) on operating platform (1) completes assembling along the y direction of grid structure (3) forward slippage to the sliding rail (2) of isolated footing end face;
E. continue at another junior unit rack of the upper assembling of operating platform (1), then slippage is above connected with previous junior unit rack to the sliding rail (2) of isolated footing end face;
F. after many junior unit racks have been accumulated a big unit rack, integrated moving to rack installation site is carried out in place;
G. after a big unit Integral in-position, with multiple jack synchronization of jacking up bearings (7) position, take piston shoes (8) and the sliding rail (2) of bearing (7) below away, then multiple jack slowly synchronously drop to each bearing (7) to predetermined support position fixing;
H. repeat above-mentioned flow process, until integral net shelf structure (3) erection is complete.
2. the assembling of large-scale Roof Latticed Truss Structure according to claim 1 and installation method, it is characterized in that: bottom and side at bearing (7) respectively arrange an elongated sliding rail (2), adopt two piston shoes (8) synchronization-sliding, translational speed is controlled in 20cm/min, the asynchronous value at grid structure (3) two ends is controlled in 30 millimeters, therefore need be at the upper graduate line of sliding rail (2), 25mm is a scale, respectively arrange a detection person to carry out count off at grid structure (3) hitch position, report mutually the particular location of side supports (7) in grid structure (3) slipping with intercom, to proofread and correct at any time the hauling speed of both sides.
3. the assembling of large-scale Roof Latticed Truss Structure according to claim 2 and installation method, it is characterized in that: hydraulic pushing mode is taked in the slippage of described grid structure (3), utilize hydraulic pressure creep machine (9) that slippage power is provided, many hydraulic pressure creep machines (9) combine, multiple spot push-and-pull, the member of decentralized network shelf structure (3), slippage beam stressed, in slipping, detect propulsive force and the speed of hydraulic pressure creep machine (9) by sensor, control the coordinate synchronization between each hydraulic pressure creep machine (9).
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| CN108571075A (en) * | 2017-03-10 | 2018-09-25 | 五冶集团上海有限公司 | A kind of large-span shell assembling jig frame staged Platforms Construct Method of Super |
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Effective date of registration: 20161021 Address after: 056015 Fuxing Road, Fuxing District, Hebei, Handan, China, No. 232 Patentee after: ENGINEERING INSTITUTE OF HANDAN IRON AND STEEL GROUP CO.,LTD. Address before: 056015 Fuxing Road, Hebei, Handan, No. 232 Patentee before: HEBEI IRON & STEEL Co.,Ltd.HANDAN BRANCH |
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Address after: 056000 No. 232, Fuxing Road, Fuxing District, Handan City, Hebei Province Patentee after: Hebei Dahe Hangang Design Institute Co.,Ltd. Address before: 056015 Fuxing Road 232, Fuxing District, Hebei, Handan Patentee before: ENGINEERING INSTITUTE OF HANDAN IRON AND STEEL GROUP CO.,LTD. |
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