CN104763091A - Large-span net ceiling system and mounting method thereof - Google Patents
Large-span net ceiling system and mounting method thereof Download PDFInfo
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- CN104763091A CN104763091A CN201510117684.8A CN201510117684A CN104763091A CN 104763091 A CN104763091 A CN 104763091A CN 201510117684 A CN201510117684 A CN 201510117684A CN 104763091 A CN104763091 A CN 104763091A
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Abstract
The invention belongs to the field of building decoration ceilings and particularly relates to a large-span net ceiling system and a mounting method thereof on account of the problems that the large-space attractiveness effect is affected by the exposure of roof trusses and support systems, and increased decorative ceilings are limited by suspension rod support roof truss stress. The system comprises a cable net structure, a net ceiling and a plurality of snapping sheet connectors. The cable net structure is arranged on a structural ring beam and is woven through a plurality of pre-stress processed steel cables, and the net ceiling is fixed on the cable net structure through the snapping sheet connectors. By means of the system and the mounting method, the net ceiling gravity can be transferred to the structural ring beam through the cable net structure, the form of transferring of the net ceiling gravity to the roof truss structure through the ceiling and a transfer layer in the prior art can be cancelled, and the cable net structure can be hidden above the net ceiling, so that the project quality and the attractiveness of the net ceiling are guaranteed.
Description
Technical field
The invention belongs to architectural decoration furred ceiling field, particularly relate to the netted ceiling system of a kind of large span and mounting method thereof.
Background technology
What certain roof, megastore adopted is double layer opening formula Roof structure, and both sides are fixing roof truss, and centre is openable roof truss.Middle openable roof truss cannot be stressed, and need to install large LED screen in netted furred ceiling, and difficulty of construction is very big.The long span of the netted furred ceiling of this engineering metal reaches 70m, and short also have 30m nearly across direction, meanwhile, needs under roof truss, install the LED display that a circular diameter reaches 22.4m.
The installation of existing large span furred ceiling, usually can adopt the method that suspension rod is fixing, the steps include: that netted furred ceiling is directly hung on steel roof truss with suspension rod by (1); (2) because opening section roof truss cannot be stressed, need a conversion layer truss be set under roof truss; (3) furred ceiling is fixed on conversion layer truss.
The drawback of this kind of suspension rod fixed solution is:
1, the load of netted furred ceiling is all applied on roof truss, although structure stress is short and sweet, but the external loads that steel roof truss can bear is limited, hang on roof truss by whole netted furred ceiling, centre is also provided with conversion layer, obviously exceeds the maximum load that roof truss can bear, consolidation process need be carried out to the roof truss of steel work, therefore installation steps are quite loaded down with trivial details, and engineer operation amount is large, affects the duration.
2, suspension rod is exposed among sight line, can affect the attractive in appearance of whole moulding, does not reach initial appearance design requirement.
The difficult point of the space roof structure engineering of this type of large span is:
Long span and short across span all more than 20m, also to incorporate other design creativity elements in Roof structure, such as: add large LED screen, the design of hollow printing opacity etc., to attractive in appearance, modeling requirement is high, whole moulding build is huge.
This type of engineering is considered mostly to adopt special roof steel structure system for vision, different modeling, the established estate erection of this engineering is counted and can be opened roof truss, this part cannot bear external force, and fixing roof truss part also can only bear very little a part of external loads, cannot support the weight of whole metal truss furred ceiling, therefore, the support of rack furred ceiling becomes a great problem of schematic design.In addition, consider the hollow modeling requirement of this type of engineering, top roof truss structure can be seen intuitively, during schematic design, also need the visual effect considering whole moulding.
Summary of the invention
The object of the present invention is to provide the netted ceiling system of a kind of large span and mounting method thereof, adopt cable net structure by the force of gravity of netted furred ceiling to the form on structure ring beam, replace using furred ceiling and conversion layer by the form of the force of gravity of netted furred ceiling to roof truss structure in prior art, ensure that roof truss does not stress, and described cable net structure can be hidden on described netted furred ceiling, ensure that workmanship and the aesthetics of netted furred ceiling.
For solving the problems of the technologies described above, the invention provides following technical scheme:
The netted ceiling system of a kind of large span, comprise cable net structure, netted furred ceiling and some card connectors, described cable net structure is laid on structure ring beam, described cable net structure adopts some cable wire braidings of autofrettage to form, and described netted furred ceiling is fixedly installed on described cable net structure by described some card connectors.
Preferably, in the netted ceiling system of above-mentioned large span, described netted furred ceiling forms net structure by some mesh sheet unit splicings, and described mesh sheet unit comprises mesh sheet skeleton and is arranged at two pieces of curve rulers on described mesh sheet skeleton, and described two pieces of curve ruler evaginations form hollow structure.
Preferably, in the netted ceiling system of above-mentioned large span, described mesh sheet skeleton comprises upper curve steel bar, lower curve steel bar, the vertical connecting rod of the vertical connecting rod in both ends and some middle parts, upper curve steel bar is arranged with described lower curve steel bar is corresponding up and down, upper curve steel bar is connected respectively by the vertical connecting rod in described end with the two ends of described lower curve steel bar, the side of described upper curve steel bar and described lower curve steel bar arranges the vertical connecting rod in described middle part for the position of splicing, described upper curve steel bar is docked by two symmetrically arranged convex outer curve steel bars and is formed, described two pieces of curve rulers are arranged between described upper curve steel bar and described lower curve steel bar.
Preferably, in the netted ceiling system of above-mentioned large span, described upper curve steel bar adopts channel-section steel, and described lower curve steel bar adopts steel plate.
Preferably, in the netted ceiling system of above-mentioned large span, the vertical connecting rod in both ends of described mesh sheet unit is provided with the concavo-convex joinery and its construction for splicing, and adjacent mesh sheet unit is connected by split bolt at the vertical connecting rod place of the vertical connecting rod in end or middle part of docking.
Preferably, in the netted ceiling system of above-mentioned large span, described curve ruler adopts double-deck aluminium sheet, filling-foam agent in described double-deck aluminium sheet.
Preferably, in the netted ceiling system of above-mentioned large span, in described cable net structure, the trend of deploying to ensure effective monitoring and control of illegal activities of cable wire moves towards corresponding with the moulding of described netted furred ceiling.
Preferably, in the netted ceiling system of above-mentioned large span, described cable wire is connected on described structure ring beam by adjustable length mechanism, described adjustable length mechanism adopts flower basket type fastener structures, described flower basket type fastener structures comprises two U-shaped fasteners and three-back-shaped fastener, one end of described U-shaped fastener is respectively equipped with screw rod, and the other end is fixedly connected with described cable wire and described structure ring beam respectively, and described three-back-shaped fastener two ends are provided with the screwed hole matched with described screw rod.
Preferably, in the netted ceiling system of above-mentioned large span, the docking site of the upper curve steel bar of adjacent net pieces unit is fixedly connected with corresponding one or two cable wires intersected by described card connector.
Preferably; in the netted ceiling system of above-mentioned large span; described card connector comprises base plate, cable wire guard shield and some threaded components; described cable wire guard shield is provided with a groove or two grooves intersected, and can form the passage passed through for a cable wire or two cable wires intersected after described cable wire guard shield and described base plate are linked together by described threaded components.
Preferably, in the netted ceiling system of above-mentioned large span, described structure ring beam has two, and one of them structure ring beam is positioned at the inside of another structure ring beam, and described cable net structure is laid in the region between two described structure ring beams.
The invention also discloses the mounting method of the netted ceiling system of a kind of large span as above, comprise the steps:
The first step, the cable prestressing in cable net structure is installed on structure ring beam by length adjustment mechanism after applying;
Second step, utilizes length adjustment mechanism to adjust the position of cable wire in cable net structure;
3rd step, is installed to each mesh sheet unit on described cable net structure by described card connector and forms the netted ceiling system of whole large span.
From above disclosed technical scheme, compared with prior art, beneficial effect of the present invention is as follows:
1, in the present invention, furred ceiling adopts cable net structure to substitute original suspension rod and conversion coating, be fixed on surrounding structure ring beam after cable wire is carried out autofrettage in advance, form the overall stressed system of a level, again whole netted furred ceiling is fixedly installed on cable net structure by special card connector, avoid roof truss directly stressed, stressed by structural beams, force structure system is clear, reinforce without the need to conversion layer and steel roof truss, installation steps are succinct.
2, by the spatial variations of netted furred ceiling and cable net structure, the netted ceiling system of large span, by traditional vertical hanging load, changes over novel level pressure grommet load bearing beam, decreases steel using amount, meets the load requirement that decoration rack and the video display canopy of the heavens are installed.
3, in cable net structure described in the present invention, the trend of deploying to ensure effective monitoring and control of illegal activities of cable wire moves towards corresponding with the moulding of described netted furred ceiling, thus described cable net structure can be made to be hidden in the top of described netted furred ceiling, that is, in cable net structure, cable wire arranges the arranged direction along netted furred ceiling, intersect and arrange in order, be ideally hidden in above space truss structure, cable net structure sight line is invisible, solve traditional scheme middle hanger cannot hide, the problem that aesthetics is impaired.
4, the mesh sheet unit (abbreviation mesh sheet) of the whole rack furred ceiling of the present invention adopts hollow moulding, for alleviating its deadweight, the quantity of vertical connecting rod in the middle part of it is reduced by science bearing capacity calculation, the vertical connecting rod in middle part is only set in position, lifting point, the moulding of mesh sheet top adopts channel-section steel form, increase the firmness of the vertical connecting rod in end and the vertical connecting rod in middle part, internal cavities between single mesh sheet uses blowing agent to fill, increase its integral rigidity, solve the yielding problem of space truss structure, lenticular docking is adopted to design between each mesh sheet, and fasten with split bolt.
5, the present invention utilizes multiple mesh sheet unit can be assembled into the netted furred ceiling of difformity, the mesh sheet unit being positioned at edge is cut into various required shape, thus goes for the netted furred ceiling of arbitrary shape, have and be widely used, advantage handsome in appearance.
6, the present invention researches and develops use special fastener, in order to connecting strand net and rack system, for adapting to whole rack system, at general position directly with special single cable clamp part fixing tightwire, connect in rope net crossover sites and be fixed by X-shaped fastener, both simplify installation difficulty, in turn ensure that installation quality.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram (top view) of the netted ceiling system of large span of one embodiment of the invention;
Fig. 2 be the netted ceiling system of large span of one embodiment of the invention for install netted furred ceiling time structural representation;
Fig. 3 is the partial structurtes schematic diagram of the netted ceiling system of large span of one embodiment of the invention;
Fig. 4 is the structural representation of mesh sheet unit in one embodiment of the invention;
Fig. 5 is the structural representation of the mesh sheet skeleton of mesh sheet unit in one embodiment of the invention;
Fig. 6 is the structural representation of the mesh sheet skeleton of existing mesh sheet unit;
Fig. 7 is the structural representation of rebate fourth of the twelve Earthly Branches structure in one embodiment of the invention;
Fig. 8 is that the vertical connecting rod in middle part of two mesh sheet unit in one embodiment of the invention adopts split bolt connection diagram;
Fig. 9 is the structural representation of flower basket type fastener structures in one embodiment of the invention;
Figure 10 is the structural representation of single cable clamp part in one embodiment of the invention;
Figure 11 is the structural representation of X-shaped fastener in one embodiment of the invention;
Figure 12 is the winding degree curve map of cable wire 1 in cable net structure;
Figure 13 is cable wire end force analysis figure in one embodiment of the invention.
In figure: 1-cable wire, 2-mesh sheet unit, 21-upper curve steel bar, 22-lower curve steel bar, the vertical connecting rod in 23-end, 231-protuberance, 232-recess, 233-bolt hole, vertical connecting rod in the middle part of 24-, 25-curve ruler, region, the 3-video display canopy of the heavens, 4-structure ring beam, 5-split bolt, 61-U font fastener, 63-screw rod, the three-back-shaped fastener of 62-, 7-card connector, the mono-cable clamp part of 7a-, 7b-X shape fastener, 71-base plate, 72-cable wire guard shield, 721-groove, 73-threaded components.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the netted ceiling system of large span that the present invention proposes is described in further detail.According to the following describes and claims, advantages and features of the invention will be clearer.It should be noted that, accompanying drawing all adopts the form that simplifies very much and all uses non-ratio accurately, only in order to object that is convenient, the aid illustration embodiment of the present invention lucidly.
Composition graphs 1 to Figure 13, present embodiment discloses the netted ceiling system of a kind of large span, comprise cable net structure, netted furred ceiling and some card connectors 7, described cable net structure is laid on the structure ring beam 4 of steel, described cable net structure adopts the braiding of some cable wires 1 of autofrettage to form, and described netted furred ceiling is fixedly installed on described cable net structure by described some card connectors 7.Original suspension rod and conversion coating is substituted by adopting cable net structure, be fixed on surrounding structure ring beam 4 after cable wire 1 is carried out autofrettage in advance, form the overall stressed system of a level, again whole netted furred ceiling is fixedly installed on cable net structure by special card connector 7, avoid steel roof truss directly stressed, stressed by structural beams, force structure system is clear, reinforce without the need to conversion layer and steel roof truss, installation steps are succinct.Further, the netted ceiling system of large span, by traditional vertical hanging load, changes over novel level pressure grommet load bearing beam, decreases steel using amount, meet the load requirement of decoration rack and the installation of the video display canopy of the heavens.
Preferably, in the netted ceiling system of above-mentioned large span, in described cable net structure, the trend of deploying to ensure effective monitoring and control of illegal activities of cable wire 1 moves towards corresponding with the moulding of described netted furred ceiling, thus described cable net structure can be made to be hidden in the top of described netted furred ceiling, that is, in cable net structure, cable wire 1 arranges the arranged direction along netted furred ceiling, intersect and arrange in order, ideally be hidden in above space truss structure, cable net structure sight line is invisible, solve traditional scheme middle hanger cannot hide, the problem that aesthetics is impaired.
Preferably, in the netted ceiling system of above-mentioned large span, described netted furred ceiling is assemblied to form net structure by some mesh sheet unit 2, and described mesh sheet unit 2 comprises mesh sheet skeleton and is arranged at two pieces of curve rulers 25 on described mesh sheet skeleton, and described two pieces of curve ruler 25 evaginations form hollow structure.Mesh sheet unit 2 adopts hollow moulding, not only for alleviating its deadweight, and can have modeling effect.
Preferably, in the netted ceiling system of above-mentioned large span, the mesh sheet unit 2 being positioned at edge can be cut into required form, to be assembled into the netted furred ceiling of various shape.Therefore, the netted furred ceiling of arbitrary shape can be formed, have and be widely used, advantage handsome in appearance.
Preferably, please consult Fig. 5 by emphasis, described mesh sheet skeleton comprises upper curve steel bar 21, lower curve steel bar 22, the vertical connecting rod 24 of the vertical connecting rod in both ends 23 and some middle parts, upper curve steel bar 21 is corresponding with lower curve steel bar about 22 to be arranged, upper curve steel bar 21 is connected respectively by the vertical connecting rod 23 in described end with the two ends of described lower curve steel bar 22, described upper curve steel bar 21 and the side of described lower curve steel bar 22 arrange the vertical connecting rod 24 in described middle part for the position of splicing, described upper curve steel bar 21 is docked by two symmetrically arranged convex outer curve steel bars and is formed, described two pieces of curve rulers 25 are arranged between described upper curve steel bar 21 and described lower curve steel bar 22.Described upper curve steel bar 21 and the side of described lower curve steel bar 22 arrange the vertical connecting rod 24 in described middle part for the position of splicing, refer to and the vertical connecting rod 24 in middle part is only set in position, lifting point, so, compare the quantity that existing mesh sheet unit (as shown in Figure 6) effectively reduces the vertical connecting rod 24 in middle part, reduce steel use amount, alleviate the quality of mesh sheet unit 2, thus reduce the weight of whole netted furred ceiling.
Preferably, when the vertical connecting rod 24 in middle part reduces, in order to ensure the resistance to overturning of netted furred ceiling, the described upper curve steel bar 21 as stressed member adopts channel-section steel, can increase the firmness of the vertical connecting rod 24 in middle part, described lower curve steel bar 22 adopts steel plate.
Preferably, please consult Fig. 7 by emphasis, the vertical connecting rod in both ends 23 of described mesh sheet unit 2 is provided with the concavo-convex joinery and its construction for splicing, concavo-convex joinery and its construction comprises the protuberance 231 and recess 232 that match, described protuberance 231 is arranged on the vertical connecting rod 23 in end of described mesh sheet unit both sides with recess 232 respectively, adjacent mesh sheet unit 2 is connected by split bolt 5 at the vertical connecting rod in end 23 or middle part vertical connecting rod 24 place of docking, Figure 8 shows that the vertical connecting rod in the middle part of two mesh sheet unit adopts split bolt connection diagram, the vertical connecting rod of the vertical connecting rod in described end 23 or middle part 24 is offered the bolt hole 233 passed through for described split bolt 5.Lenticular docking is namely adopted to design between each mesh sheet, and fasten with split bolt 5, this novel mesh sheet connected mode, eliminate installation effectiveness low, safety do not have guaranteed overhead welding operating type, quality when can improve in-site installation and speed, have easy to assembly, the advantage that installation effectiveness is high.
Preferably, in the netted ceiling system of above-mentioned large span, described curve ruler 25 adopts double-deck aluminium sheet, filling-foam agent in described double-deck aluminium sheet.Use blowing agent is filled, and can increase the integral rigidity of mesh sheet unit 2, solve the yielding problem of netted furred ceiling.
Preferably, in the netted ceiling system of above-mentioned large span, please consult Fig. 9 by emphasis, described cable wire 1 is connected on described structure ring beam 4 by adjustable length mechanism, described adjustable length mechanism adopts flower basket type fastener structures, described flower basket type fastener structures comprises two U-shaped fasteners 61 and three-back-shaped fastener 62, one end of described U-shaped fastener 61 is respectively equipped with screw rod 63, the other end is fixedly connected with described cable wire 1 and described structure ring beam 4 respectively, and described three-back-shaped fastener 62 two ends are provided with the screwed hole matched with described screw rod 63.
Preferably, in the netted ceiling system of above-mentioned large span, the docking site of the upper curve steel bar 21 of adjacent net pieces unit 2 is fixedly connected with corresponding one or two cable wires intersected 1 by described card connector 7.
Preferably; refer to Figure 10 and Figure 11; described card connector 7 comprises base plate 71, cable wire guard shield 72 and some threaded components 73; described cable wire guard shield 72 is provided with a groove 721 or two grooves 721 intersected, and can form the passage passed through for a cable wire 1 or two cable wires intersected 1 after described cable wire 1 protective sleeve and described base plate 71 are linked together by described threaded components 73.Specifically, described card connector 7 comprises single cable clamp part 7a and X-shaped fastener 7b.As shown in Figure 10; described single cable clamp part 7a comprises base plate 71, cable wire guard shield 72 and some threaded components 73; described cable wire guard shield 72 is provided with a groove 721, can form the passage passed through for a cable wire 1 after described cable wire 1 protective sleeve and described base plate 71 are linked together by described threaded components 73.As shown in figure 11; described X-shaped fastener 7b comprises base plate 71, cable wire guard shield 72 and some threaded components 73; described cable wire guard shield 72 is provided with two grooves 721 intersected, and can form the passage passed through for two cable wires intersected 1 after described cable wire 1 protective sleeve and described base plate 71 are linked together by described threaded components 73.
Preferably, in the netted ceiling system of above-mentioned large span, described structure ring beam 4 has two, and one of them structure ring beam 4 is positioned at the inside of another structure ring beam 4, and described cable net structure is laid in the region between two described structure ring beams 4.Such as, the interior zone of the structure ring beam 4 that the present embodiment is medium and small may be used for arranging large LED lamp or as region, the video display canopy of the heavens 3, making the structure style of netted furred ceiling more diversified.
Please continue to refer to Fig. 1 to Figure 11, the invention also discloses the mounting method of the netted ceiling system of a kind of large span as above, comprise the steps:
The first step, is installed on structure ring beam 4 by length adjustment mechanism after cable wire 1 prestress application in cable net structure.Described adjustable length mechanism adopts flower basket type fastener structures, described flower basket type fastener structures comprises two U-shaped fasteners 61 and three-back-shaped fastener 62, one end of described U-shaped fastener 61 is respectively equipped with screw rod 63, the other end is fixedly connected with described cable wire 1 and described structure ring beam 4 respectively, and described three-back-shaped fastener 62 two ends are provided with the screwed hole matched with described screw rod 63.
Second step, utilizes length adjustment mechanism to adjust the position of cable wire 1 in cable net structure.By screwing effect between three-back-shaped fastener 62 and the screw rod 63 of two U-shaped fasteners 61, can further or zoom out the distance between two U-shaped fasteners 61, thus realize the extension and contraction control to cable wire in cable net structure 1.
3rd step, is installed to each mesh sheet unit 2 on described cable net structure by described card connector 7 and forms the netted ceiling system of whole large span.For adapting to whole rack system, directly with single cable clamp part 7a, cable wire 1 and two mesh sheet being fixed at most of position, and by X-shaped fastener 7b, cable wire 1 and two mesh sheet being fixed in rope net crossover sites, both having simplified installation difficulty, in turn ensure that installation quality.
In the present embodiment, netted furred ceiling quality and cable net structure force analysis as follows:
1) quality of mesh sheet unit
The monolithic mesh sheet of the present embodiment is that the outer alclad sheet of middle steel frame is made, and monolithic height is 800mm.Wherein, aluminium sheet 1.5mm is thick, and steel frame is made by 5mm steel plate.
Aluminium sheet area: S=2 × (3.45+3.33)=13.56m
2
Aluminium sheet quality: m=13.56 × 0.0015 × 2.7 × 10
3=54.9kg
Horizontal steel plate area: S
1=0.404 × 2+0.129 × 2+0.125 × 2=1.32m
2
The vertical steel plate area in two ends: S
2=0.162 × 2=0.324m
2
Plate quality: m=(1.32+0.324) × 0.005 × 7.85 × 10
3+ 4.39 × 0.8 × 4=78.6kg
Blowing agent volume: V=0.404 × 0.8=0.323m
3
Blowing agent quality: m=0.323 × 20=6.46kg
The single mesh tablet quality of the present embodiment: m
always=54.9+78.6+6.46=140.0kg
And existing mesh sheet unit weight is calculated as follows: the vertical connecting rod in middle part adopts 50*50 thickness to be 3mm square steel pipe, the vertical connecting rod in end on both sides adopts 100*50 thickness to be 3mm rectangular steel pipe, and upper and lower part curve steel strip adoption thickness is 5mm steel plate.Wherein:
Tube quality: m
1=4.39 × 0.8 × 14+6.71 × 0.8 × 2=59.9kg
Plate quality: m
2=0.404 × 2 × 0.005 × 7.85 × 1000=31.7kg
Outer alclad sheet quality: m
3=54.9kg
The quality of existing monolithic mesh sheet: m=59.9+31.7+54.9=146.5kg
As seen from the above, the quality of the monolithic mesh sheet of the present embodiment and the Mass lost of existing monolithic mesh sheet 6.5Kg.
2) rope net is stressed calculates
Refer to Figure 12 and Figure 13, Figure 12 shows that the winding degree curve map of cable wire 1 in rope net, Figure 13 shows that cable wire end force analysis figure in one embodiment of the invention.Assuming that load distributes with uniform line load on cable wire 1, and without interacting between cable wire 1.
Uniform line load is: q=140.0 × 9.8 × 10
-3/ (2.27 × 2)=0.302kN/m
Design load (getting safety factor 1.5): q '=1.5 × 0.288=0.453kN/m
The longest rope length is: l=41.3m
Cable wire is maximum in two end axles power, bears vertical force to be wherein: F
perpendicular=0.432 × 41.3/2=9.35kN
Cable wire is under uniform line load effect, and deflection curve is parabolic type, controls cable wire midway deflection 1/250.Solve the analytic equation of curve is:
wherein, x represents the forward of horizontal direction, and y represents the forward of vertical direction.
wherein, θ refers to the horizontal sextant angle of cable end.
F
rope=F
perpendicular/ sin θ=9.35/0.016=584.4kN, wherein, F
roperefer to steel cable stretching force, F
perpendicularrefer to the vertical force suffered by cable wire end.
Cable wire tensile strength gets 1670MPa.
Cable wire sectional area: s=584.4 × 10
-3/ 1670=3.50 × 10
-4m
2=350mm
2
Rope diameter:
Note: without interacting between whole calculation assumption cable wire, and get a longest cable wire and calculate.And in real process, whole rope net as an individual system, between cable wire be have interactional.Therefore, this computational process is too conservative, just carries out rough calculation to cable net structure, not as the foundation of actual design.
In sum, the present invention has following beneficial effect:
In the present invention, furred ceiling adopts cable net structure to substitute original suspension rod and conversion coating, be fixed on surrounding structure ring beam after cable wire is carried out autofrettage in advance, form the overall stressed system of a level, again whole netted furred ceiling is fixedly installed on cable net structure by special card connector, avoid roof truss directly stressed, stressed by structural beams, force structure system is clear, reinforce without the need to conversion layer and steel roof truss, installation steps are succinct.
2, by the spatial variations of netted furred ceiling and cable net structure, the netted ceiling system of large span, by traditional vertical hanging load, changes over novel level pressure grommet load bearing beam, decreases steel using amount, meets the load requirement that decoration rack and the video display canopy of the heavens are installed.
3, in cable net structure described in the present invention, the trend of deploying to ensure effective monitoring and control of illegal activities of cable wire moves towards corresponding with the moulding of described netted furred ceiling, thus described cable net structure can be made to be hidden in the top of described netted furred ceiling, that is, in cable net structure, cable wire arranges the arranged direction along netted furred ceiling, intersect and arrange in order, be ideally hidden in above space truss structure, cable net structure sight line is invisible, solve traditional scheme middle hanger cannot hide, the problem that aesthetics is impaired.
4, the mesh sheet unit (abbreviation mesh sheet) of the whole rack furred ceiling of the present invention adopts hollow moulding, for alleviating its deadweight, the quantity of vertical connecting rod in the middle part of it is reduced by science bearing capacity calculation, the vertical connecting rod in middle part is only set in position, lifting point, the moulding of mesh sheet top adopts channel-section steel form, increase the firmness of the vertical connecting rod in end and the vertical connecting rod in middle part, internal cavities between single mesh sheet uses blowing agent to fill, increase its integral rigidity, solve the yielding problem of space truss structure, lenticular docking is adopted to design between each mesh sheet, and fasten with split bolt.
5, the present invention utilizes multiple mesh sheet unit can be assembled into the netted furred ceiling of difformity, the mesh sheet unit being positioned at edge is cut into various required shape, thus goes for the netted furred ceiling of arbitrary shape, have and be widely used, advantage handsome in appearance.
6, the present invention researches and develops use special fastener, in order to connecting strand net and rack system, for adapting to whole rack system, at general position directly with special single cable clamp part fixing tightwire, connect in rope net crossover sites and be fixed by X-shaped fastener, both simplify installation difficulty, in turn ensure that installation quality.
Foregoing description is only the description to present pre-ferred embodiments, any restriction not to the scope of the invention, and any change that the those of ordinary skill in field of the present invention does according to above-mentioned disclosure, modification, all belong to the protection domain of claims.
Claims (12)
1. the netted ceiling system of large span, it is characterized in that, comprise cable net structure, netted furred ceiling and some card connectors, described cable net structure is laid on structure ring beam, described cable net structure adopts some cable wire braidings of autofrettage to form, and described netted furred ceiling is fixedly installed on described cable net structure by described some card connectors.
2. the netted ceiling system of large span as claimed in claim 1, it is characterized in that, described netted furred ceiling forms net structure by some mesh sheet unit splicings, described mesh sheet unit comprises mesh sheet skeleton and is arranged at two pieces of curve rulers on described mesh sheet skeleton, and described two pieces of curve ruler evaginations form hollow structure.
3. the netted ceiling system of large span as claimed in claim 2, it is characterized in that, described mesh sheet skeleton comprises upper curve steel bar, lower curve steel bar, the vertical connecting rod of the vertical connecting rod in both ends and some middle parts, upper curve steel bar is arranged with described lower curve steel bar is corresponding up and down, upper curve steel bar is connected respectively by the vertical connecting rod in described end with the two ends of described lower curve steel bar, the side of described upper curve steel bar and described lower curve steel bar arranges the vertical connecting rod in described middle part for the position of splicing, described upper curve steel bar is docked by two symmetrically arranged convex outer curve steel bars and is formed, described two pieces of curve rulers are arranged between described upper curve steel bar and described lower curve steel bar.
4. the netted ceiling system of large span as claimed in claim 3, is characterized in that, described upper curve steel bar adopts channel-section steel, and described lower curve steel bar adopts steel plate.
5. the netted ceiling system of large span as claimed in claim 3, it is characterized in that, the vertical connecting rod in both ends of described mesh sheet unit is provided with the concavo-convex joinery and its construction for splicing, and adjacent mesh sheet unit is connected by split bolt at the vertical connecting rod place of the vertical connecting rod in end or middle part of docking.
6. the netted ceiling system of large span as claimed in claim 2, it is characterized in that, described curve ruler adopts double-deck aluminium sheet, filling-foam agent in described double-deck aluminium sheet.
7. the netted ceiling system of large span as claimed in claim 1, is characterized in that, in described cable net structure, the trend of deploying to ensure effective monitoring and control of illegal activities of cable wire moves towards corresponding with the moulding of described netted furred ceiling.
8. the netted ceiling system of large span as claimed in claim 1, it is characterized in that, described cable wire is connected on described structure ring beam by adjustable length mechanism, described adjustable length mechanism adopts flower basket type fastener structures, described flower basket type fastener structures comprises two U-shaped fasteners and three-back-shaped fastener, one end of described U-shaped fastener is respectively equipped with screw rod, the other end is fixedly connected with described cable wire and described structure ring beam respectively, and described three-back-shaped fastener two ends are provided with the screwed hole matched with described screw rod.
9. ceiling system as netted in the large span in claim 1-8 as described in any one, is characterized in that, the docking site of the upper curve steel bar of adjacent net pieces unit is fixedly connected with corresponding one or two cable wires intersected by described card connector.
10. the netted ceiling system of large span as claimed in claim 9; it is characterized in that; described card connector comprises base plate, cable wire guard shield and some threaded components; described cable wire guard shield is provided with a groove or two grooves intersected, and can form the passage passed through for a cable wire or two cable wires intersected after described cable wire guard shield and described base plate are linked together by described threaded components.
The netted ceiling system of 11. large span as claimed in claim 1, it is characterized in that, described structure ring beam has two, and one of them structure ring beam is positioned at the inside of another structure ring beam, and described cable net structure is laid in the region between two described structure ring beams.
The mounting method of 12. 1 kinds of ceiling systems as netted in the large span in claim 1-11 as described in any one, is characterized in that, comprise the steps:
The first step, the cable prestressing in cable net structure is installed on structure ring beam by length adjustment mechanism after applying;
Second step, utilizes length adjustment mechanism to adjust the position of cable wire in cable net structure;
3rd step, is installed to each mesh sheet unit on described cable net structure by described card connector and forms the netted ceiling system of whole large span.
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| CN112411382A (en) * | 2020-10-27 | 2021-02-26 | 中国一冶集团有限公司 | Mounting construction method of light hole safety protection device |
| CN112523414A (en) * | 2020-12-16 | 2021-03-19 | 广东省建筑设计研究院有限公司 | Bucket screen installation design method applied to large-span rigid roof cable dome structure |
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