CN202672429U - Roofing horizontal support arrangement structure reducing stress consumption - Google Patents
Roofing horizontal support arrangement structure reducing stress consumption Download PDFInfo
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- CN202672429U CN202672429U CN 201120477768 CN201120477768U CN202672429U CN 202672429 U CN202672429 U CN 202672429U CN 201120477768 CN201120477768 CN 201120477768 CN 201120477768 U CN201120477768 U CN 201120477768U CN 202672429 U CN202672429 U CN 202672429U
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- roofing
- cable
- lower rope
- suspender
- steel
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Abstract
The utility model relates to a roofing horizontal support arrangement structure reducing stress consumption, comprising roofing steel beams at the two sides, purlines are stretched across between roofing steel beams at the two sides, X-shaped inhaul cables are arranged between the roofing steel beams at the two sides, each X-shaped inhaul cable comprises an upper cable and a lower cable mutually crossed, wherein, the upper cable is disposed above the lower cable, the roofing horizontal support arrangement structure is characterized by also comprising lifting tools, each lower cable is at least provided with a lifting tool, one end of the lifting tool is fixed on the purline, and the other end lifts the corresponding lower cable. The roofing horizontal support arrangement structure is advantageous in that, under the condition of not increasing investment, via improvement of construction of a roofing round steel horizontal support and additional disposing of the lifting tools (the lifting tools are characterized by simple manufacture and very low cost) in the inhaul cable span, stress consumption during round steel inhaul cable tensioning is greatly reduced, and effects of ensuring structural safety, enlarging inhaul cable application span, and saving investment are reached.
Description
Technical field
The utility model relates to a kind of structure that stress consumes when reducing the tensioning of roofing system with lightweight steel structure round steel jump stay.
Background technology
This structural shape of door-like steel frame light structure is so that it is large from heavy and light, span, material is economized, design the characteristics such as easy standardization, easy construction, saving duration and investment, extensively favored, be widely used in the buildings such as middle-size and small-size industrial premises, logistics warehouse, hypermarket.The beam column of this steel work adopts real abdomen H shaped steel cross section, and suspension column often adopts hinged.The monolithic stability in whole house is supported to guarantee by roofing and intercolumniation.And its roofing usually adopts X-type round steel jump stay, and this drag-line can only tension, can not pressurized.After tensioning, under horizontal loads, wherein inefficacy, another root plays the pull bar effect, for guaranteeing that the steel roof joist out plane stability plays key effect.
The round steel jump stay is sagging because of deadweight, if will be tensioned to level, drag-line stress equals infinitely great in theory.Often drag-line is tensioned to Relative Deflection in the Practical Project and reaches l/700, just can effectively play a role.Obviously, sagging for the deadweight that overcomes the round steel drag-line, in the tensioning process, will consume the part reinforcement stresses, make the actual tension depression of bearing force under its outer load effect.The span of round steel drag-line is larger, and the amplitude of tension depression of bearing force is just larger.Regrettably, China Engineering Construction Standardization Association's standard " Steel Portal Frames tecnical regulations " the CECS 102:2002 as the main design considerations of current door-like steel frame light structure does not mention the sagging impact on its tension bearing capacity of round steel jump stay deadweight.This will cause two kinds of consequences:
If 1 design is not considered this impact especially when round steel jump stay span is larger, will stay potential safety hazard.In case hurricane arrives, the round steel jump stay calculates bearing capacity because of its actual tension bearing capacity much smaller than the theory of the sagging impact of not considering to conduct oneself with dignity, the pull bar overload was lost efficacy, and then cause steel roof joist side direction unstability, the serious consequence of roofing total collapse may occur fully.
If this impact is taken in 2 designs into account, certainly will need the span of restriction round steel jump stay, make this construction more convenient, the roofing pattern that material is economized is again used when large span and is obstructed.These two kinds of consequences all are that owner, design and construction party institute are not acceptant.
Summary of the invention
The purpose of this utility model provides a kind of resulting structure that stress consumes when reducing the tensioning of roofing system with lightweight steel structure round steel jump stay.
In order to achieve the above object, the technical solution of the utility model has provided a kind of roofing arrangement that stress consumes that reduces, comprise the steel roof joist that is positioned at both sides, purlin is across between the steel roof joist of both sides, between the steel roof joist of both sides, be furnished with the X-type drag-line, the X-type drag-line comprises cross one another upper rope and lower rope, wherein, upper rope is positioned at the top of lower rope, it is characterized in that: also comprise suspender, every lower rope is equipped with a suspender at least, and an end of suspender is fixed on the purlin, and the other end is sling the lower rope of its correspondence.
Preferably, described suspender is arranged in the midpoint of the lower rope corresponding with it.
Preferably, described suspender is arranged in 1/4 length and the 3/4 length place of the lower rope corresponding with it, or is arranged in 1/3 length and the 2/3 length place of the lower rope corresponding with it, or is arranged in 2/5 length and the 3/5 length place of the lower rope corresponding with it.
Preferably, described suspender comprises steel plate, and steel plate is fixed on the described purlin, and an end of suspension hook is fixed on the steel plate, and the other end is sling described lower rope.
Preferably, have a pair of installing hole at described steel plate.
Preferably, the distance of the center of described installing hole to described purlin bottom surface is 80mm.
Preferably, form an angle between described suspension hook and the plane, described steel plate place, the tangent of this angle is roof pitch.
Preferably, the distance of described plane, lower rope place and described purlin bottom surface is 150mm.
The utility model has the advantages that: in the situation that substantially do not increase investment, by improving the structure of roofing round steel horizontal support, (suspender is made simple to set up suspender in drag-line is striden, cost is very low), stress consumption when greatly reducing the tensioning of round steel drag-line, reach and guarantee structural safety, increase drag-line application span, save the effect of investment.
Description of drawings
Fig. 1 is the roofing arrangement diagram;
Fig. 2 A be the internode span when being 4.5m suspension centre arrange schematic diagram;
Fig. 2 B is that the a-a of Fig. 2 A is to schematic diagram;
Fig. 3 A be the internode span when being 6m suspension centre arrange schematic diagram;
Fig. 3 B is that the b-b of Fig. 3 A is to schematic diagram;
Fig. 3 C is that the c-c of Fig. 3 A is to schematic diagram;
Fig. 4 A be the internode span when being 7.5m suspension centre arrange schematic diagram;
Fig. 4 B is that the d-d of Fig. 4 A is to schematic diagram;
The line of deflection schematic diagram of upper rope when Fig. 5 is two suspension centre;
The line of deflection schematic diagram of upper rope when Fig. 6 is single suspension centre;
Fig. 7 is the scheme of installation of suspender;
Fig. 8 is the elevation of suspender;
Fig. 9 is the lateral view of suspender.
The specific embodiment
For the utility model is become apparent, hereby with preferred embodiment, and cooperate accompanying drawing to be described in detail below.
In conjunction with Fig. 1 (GJ is rigit-frame beam in the figure, and GXG is rigid tie bar, and SC is roofing), 02SG518 knows by national standard atlas " Steel Portal Frames ": door-like steel frame light structural span B is 12-36m; Post has three kinds of 6m, 7.5m and 9m apart from b; Internode span a has three kinds of 4.5m, 6m and 7.5m; The roof purline spacing is 1.5m.
After deliberation, adopting diameter is that the round steel of 25mm is as roofing, the Relative Deflection controlling value gets 1/700 during tensioning, when the horizontal support span is 8m, 10m, 12m, 15m and 18m, the percentage that stress consumption accounts for the total tension bearing capacity of horizontal support during tensioning is respectively 30.8%, 38.6%, 46.3%, 57.7% and 69.2%.This is appreciable stress loss.If do not consider, will bring potential safety hazard to engineering.
Shown in Fig. 2 A, Fig. 3 A and Fig. 4 A, be respectively internode span roofing arrangement when being 4.5m, 6m and 7.5m, comprise the steel roof joist 1 that is positioned at both sides, purlin 2 is across between the steel roof joist 1 of both sides, be furnished with the X-type drag-line between both sides steel roof joist 1, the X-type drag-line comprises cross one another upper rope 3 and lower rope 4.
Shown in Fig. 2 A and Fig. 2 B, when the internode span is 4.5m, for every lower rope 4 is equipped with 1/3 length and the 2/3 length place that 5, two suspenders 5 of two suspenders are arranged in the lower rope 4 corresponding with it, one end of suspender 5 is fixed on the purlin 2, and the other end is sling the lower rope 4 of its correspondence.
Shown in Fig. 3 A to Fig. 3 C, when the internode span is 6m, for two adjacent lower ropes 4 are equipped with respectively a suspender 5 and two suspenders 5, wherein, a suspender 5 is arranged in the midpoint of the lower rope 4 corresponding with it, and two 5 of suspenders are arranged in 1/4 length and the 3/4 length place of lower rope 4.
Shown in Fig. 4 A and Fig. 4 B, when the internode span is 7.5m, for every lower rope 4 is equipped with 2/5 length and the 3/5 length place that 5, two suspenders 5 of two suspenders are arranged in the lower rope 4 corresponding with it.
In above-mentioned drawing,
The length of the lower rope 4 of expression, T is cable-tension, fmax is for striding interior maximum defluxion.Suspension centre initial position X coordinate is seen figure, and the Y coordinate is zero.
When rope 4 adopted single-point to hang instantly, upper rope 3 acted on the suspension centre place of lower rope 4, and its deadweight P directly acts on suspender 5, and upper rope 3 lines of deflection as shown in Figure 5.When rope 4 adopted two points to hang instantly, upper rope 3 acted between lower rope strides, and its deadweight is passed to suspender 5 by lower rope, and upper rope 3 lines of deflection as shown in Figure 6.At drag-line span centre intersection point place, Suo Liying iso-deflection (the drag-line diameter is disregarded) up and down.
To shown in Figure 9, suspender 5 is comprised of steel plate 6 and suspension hook 7 such as Fig. 7, and suspension hook 7 flat filled weld in front and backs are on steel plate 6.Suspender 5 can process in advance in factory, reserves 2 installing holes 8 on the steel plate 6.Although the size of roof purline 2 slightly changes apart from difference with post, but for unified suspender 5 patterns, allow it be applicable to the drag-line of various spans, simplify the processing classification, special is that the distance of roof purline 2 bottom surfaces all is decided to be 80mm with installing hole 8 centers to steel plate 6 limits, the distance of lower rope plane, 4 place and roof purline 2 bottom surfaces all is decided to be 150mm, does not then affect suspender 5 and by bolt roof purline 2 is reliably passed in the drag-line deadweight.Suspension hook 7 slightly bends, and the tangent of the angle at itself and steel plate plane, 6 place that is purlin 2 back sides is roof pitch.
Can on ground suspender 5 be fixed on first the design attitude place of purlin 2 at the construction field (site), and label.Then lightweight steel construction sequentially lifts by crane by normal lifting.When all purlins 2 all in place, and with steel roof joist 1 on the purlin supporting plate fixing after, can be with oblique each post that is fixed in of jump stay on the web of two ends steel roof joist 1.At this moment, the constructor can lift on the ground Y shape strut (light instrument, self-control) and sagging lower rope 4 is praised to suspension hook 7 just can.
In the frictional force at suspension hook 7 places, suggestion is coated with sliding agent with the drag-line surface in each 300-500mm scope of suspension hook both sides when reducing the drag-line tensioning, and its kind is made by oneself by unit in charge of construction, but must not corrosiveness be arranged to drag-line.
Carry out aforesaid operations, by set up 1-2 suspension centre, the stress consumption in the time that the jump stay tensioning can being reduced greatly in the drag-line appropriate location.
Now with national standard atlas " Steel Portal Frames " (02SG518) in, span is that 30m and 36m(span are maximum) two kinds of door-like steel frame light structures be example, computational analysis comparison round steel jump stay is not if establish suspension centre respectively, stress consumption during the drag-line tensioning sees table 1 for details.By as seen from Table 1, the method that the utility model proposes is quite effective.In fact, the drag-line span is large again, and is just more effective.
Table 1.
Claims (8)
1. one kind reduces the roofing arrangement that stress consumes, comprise the steel roof joist (1) that is positioned at both sides, purlin (2) is across between the steel roof joist (1) of both sides, between both sides steel roof joist (1), be furnished with the X-type drag-line, the X-type drag-line comprises cross one another upper rope (3) and lower rope (4), wherein, upper rope (3) is positioned at the top of lower rope (4), it is characterized in that: also comprise suspender (5), every lower rope (4) is equipped with a suspender (5) at least, one end of suspender (5) is fixed on the purlin (2), and the other end is sling the lower rope (4) of its correspondence.
2. a kind of roofing arrangement that stress consumes that reduces as claimed in claim 1, it is characterized in that: described suspender (5) is arranged in the midpoint of the lower rope (4) corresponding with it.
3. a kind of roofing arrangement that stress consumes that reduces as claimed in claim 1, it is characterized in that: described suspender (5) is arranged in 1/4 length and the 3/4 length place of the lower rope (4) corresponding with it, or be arranged in 1/3 length and the 2/3 length place of the lower rope (4) corresponding with it, or be arranged in 2/5 length and the 3/5 length place of the lower rope (4) corresponding with it.
4. such as each described a kind of roofing arrangement that stress consumes that reduces in the claims 1 to 3, it is characterized in that: described suspender (5) comprises steel plate (6), steel plate (6) is fixed on the described purlin (2), one end of suspension hook (7) is fixed on the steel plate (6), and the other end is sling described lower rope (4).
5. a kind of roofing arrangement that stress consumes that reduces as claimed in claim 4 is characterized in that: have a pair of installing hole (8) at described steel plate (6).
6. a kind of roofing arrangement that stress consumes that reduces as claimed in claim 5, it is characterized in that: the distance of the center of described installing hole (8) to described purlin (2) bottom surface is 80mm.
7. a kind of roofing arrangement that stress consumes that reduces as claimed in claim 5, it is characterized in that: formation one angle between described suspension hook (7) and described steel plate (6) plane, place, the tangent of this angle is roof pitch.
8. a kind of roofing arrangement that stress consumes that reduces as claimed in claim 1, it is characterized in that: the distance of described lower rope (4) plane, place and described purlin (2) bottom surface is 150mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120477768 CN202672429U (en) | 2011-11-27 | 2011-11-27 | Roofing horizontal support arrangement structure reducing stress consumption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120477768 CN202672429U (en) | 2011-11-27 | 2011-11-27 | Roofing horizontal support arrangement structure reducing stress consumption |
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| Publication Number | Publication Date |
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| CN202672429U true CN202672429U (en) | 2013-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN 201120477768 Expired - Fee Related CN202672429U (en) | 2011-11-27 | 2011-11-27 | Roofing horizontal support arrangement structure reducing stress consumption |
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| Country | Link |
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| CN (1) | CN202672429U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108824839A (en) * | 2018-08-29 | 2018-11-16 | 国网江苏省电力有限公司扬州供电分公司 | A kind of drag-line ruggedized construction of existing C-type steel purlin |
| CN109898649A (en) * | 2017-12-11 | 2019-06-18 | 美建建筑系统(中国)有限公司 | A kind of high strength steel constructional device |
-
2011
- 2011-11-27 CN CN 201120477768 patent/CN202672429U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109898649A (en) * | 2017-12-11 | 2019-06-18 | 美建建筑系统(中国)有限公司 | A kind of high strength steel constructional device |
| CN108824839A (en) * | 2018-08-29 | 2018-11-16 | 国网江苏省电力有限公司扬州供电分公司 | A kind of drag-line ruggedized construction of existing C-type steel purlin |
| CN108824839B (en) * | 2018-08-29 | 2023-11-24 | 国网江苏省电力有限公司扬州供电分公司 | Cable reinforcement structure of existing C-shaped steel purline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20191127 |