CN2898155Y - Internal orthogonal stretched space grid structure - Google Patents
Internal orthogonal stretched space grid structure Download PDFInfo
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- CN2898155Y CN2898155Y CN 200620113278 CN200620113278U CN2898155Y CN 2898155 Y CN2898155 Y CN 2898155Y CN 200620113278 CN200620113278 CN 200620113278 CN 200620113278 U CN200620113278 U CN 200620113278U CN 2898155 Y CN2898155 Y CN 2898155Y
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- stretch
- draw
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- lower edge
- steel pipe
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 35
- 239000010959 steel Substances 0.000 claims abstract description 35
- 238000009826 distribution Methods 0.000 claims abstract description 6
- 238000010623 stretch-draw forming Methods 0.000 claims description 24
- 230000000694 effects Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 abstract description 5
- 230000009471 action Effects 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000005452 bending Methods 0.000 abstract description 3
- 239000011440 grout Substances 0.000 abstract 1
- 238000001727 in vivo Methods 0.000 abstract 1
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000004804 winding Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000008267 milk Substances 0.000 description 2
- 210000004080 milk Anatomy 0.000 description 2
- 235000013336 milk Nutrition 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The utility model belongs to an orthogonal in-vivo stretch forming space grid structure which belongs to long-span space grid structure. The stretching unit (1) is arranged interleavingly along the structural plane; the facade of the stretching unit with a camber shape is composed of upper chord (4), lower chord (5), web member (6) and full-length steel cable (2) penetrating the lower chord tube; the upper chord is composed of curved steel pipes which are plastically deformed from full-length steel girders under bending action, the lower chord is composed of flat steel pipe sections formed from steel pipe sections in curved distribution with sealed gaps; the web member ends are interconnected and also hinged with upper and lower chords; grout (8) exists between inner wall of lower chord tube and steel rope; the upper chords (4) of transverse stretching unit are joined at the junction, and semi-rigidly interconnected. The utility model has the advantages that: with the strength of the structural materials, the utility model can improve the efficiency of cable arrangement, the durability of cable and plastic property of the structure.
Description
Technical field
The utility model is a kind of stretch-draw forming prestressing with bond spatial mesh structure, belongs to the long-span space lattice structures system.
Background technology
Though the conventional mesh structure has many advantages, but also have the shortcoming that can't avoid: there is stable problem in the single-layer lattice shell structure, usually the rod member stress value only is about 1/5th of a design load, double layer grid (shell) has overcome above-mentioned shortcoming to a certain extent, but rod member is dense, increase rapidly with the steel index along with span increases it, and the conventional mesh structure is far from bringing into play the intensity of material.
After the Prestressed Space network that technology is comparatively ripe all adopts structure to be shaped earlier at present, apply prestressing force by external additional rope.Rigidity is very good in the spatial mesh structure shaping back plane, at this moment by external cloth rope apply prestressing force then usefulness be limited.Though simultaneously external cloth rope is convenient, has a year to change the problem of rope for a long time after all.
The 1980s, Australian scientific research personnel develops a kind of novel large span spatial structure system-STRARCH (STRessed ARCH).According to its node configuration and construction characteristic, we claim that this system is the stretch-draw prestressing force bow member.This structural system stress performance rationally, need not to use scaffold, all work items are all carried out on subaerial lower position.But this structure will be failed in case the plastic hinge structure formation occurs because arch camber is higher, and winding up enters plasticity comprehensively, and will be therefore higher to material requirements; The pretension of rope is identical with load action in the bow member of shaping back, makes the rod member pressurized, must strengthen lower chord again, and rope is in lax trend under the load action.
Summary of the invention
The utility model is at the large span spatial structure development need, to make full use of the intensity of structural meterials, improve the durability of structure cloth rope usefulness and rope, wind up plasticity and to improve structure load-bearing state be purpose of performance rationally proposes stretch-draw forming spatial mesh structure in a kind of self-balancing structural system-orthogonal type body.
The concrete technical scheme that the utility model adopted is: formed to the forward arranged crosswise in length and breadth along the structural plan by stretch-draw unit 1, stretch-draw unit 1 is plane bow member shape, be subjected to curved pressure effect to produce plastic strain and the steel pipe along the span camber that forms winds up 4 by elongated straight steel tubular beam, straight discontinuous and steel pipe lower edge 5 that reserving gaps is closed, the steel pipe web member 6 that the termination links to each other in twos, the elongated cable wire of wearing in lower edge 5 pipes that is in tension state 2 is formed, wherein, web member 6 is a steel pipe, two ends and last lower chord are hinged, form after the lengths of steel pipes pressurized reserving gaps closure that lower edge 5 is distributed by curved interruption straight lengths of steel pipes constitute, be in the milk 3 between lower chord tube inwall and the cable wire; Winding up of vertical and horizontal stretch-draw unit 14 intersected in the node place, and mutually half just knot connect.
The cladding material of roof of stretch-draw forming spatial mesh structure can be selected for use flexibly according to load and functional requirement in the orthogonal type body.
The stretch-draw forming spatial mesh structure has following characteristics in the orthogonal type body that the utility model proposes:
1) structure scheme is rationally brought into play structural element (rope and bar) advantage performance separately, makes full use of the intensity of structural meterials.
Strand spiral rope is the high member of carrying pulling force efficient, steel pipe then is a pressure-bearing and bending resistance member preferably, the stretch-draw forming spatial mesh structure is arranged in lower edge with cable wire and bears pulling force in the orthogonal type body, steel pipe is arranged in the place of winding up bears press-bending, give full play to advantage performance separately, and last quarter rope adds the steel pipe of reserving gaps outward, before stretch-draw, make stretch-draw unit web member and being connected of lower edge become very easy on the one hand, on the other hand after stretch-draw cable wire and lower edge steel pipe reserving gaps closure, it is whole stressed that cement-grouting consolidation bonds together lower edge and cable wire, bear the pressure effect that lower edge may be subjected to, prevent that Suo Songchi from causing structural failure.
2) the interior stretch-draw forming spatial mesh structure of orthogonal type body has improved the durability of structure cloth rope usefulness and rope.
Stretch-draw forming spatial mesh structure in the orthogonal type body makes the stretch-draw unit become the static determinacy state by mechanism's state by applying prestressing force, and then forms spatial mesh structure, the rigidity of structure is provided and keeps the predetermined form of structure; Simultaneously,, greatly improve structure internal force and Stiffness Distribution, and then improve structural bearing capacity because the structure topology configuration has been optimized in prestressing; In addition, by active stretch-draw, the stretch-draw unit forming forms structural element, passive stretch-draw under the outer load effect after stretching-drawing structure unit and the annex composition spatial mesh structure system, the distribution of internal force of further optimizing structure; Have, structure Nei Busuo can play a protective role to rope again, makes rope avoid external environment influence, prolongs the application life of rope.
3) the strict control of stretch-draw forming spatial mesh structure stretch-draw yardstick in the orthogonal type body, the performance rationally plasticity of winding up, avoid arch camber higher cause winding up enter plasticity comprehensively, and improved structure load-bearing state.
Plastic hinge occurs in case the stretch-draw unit winds up, structure formation will be failed, and when the cable wire of the utility model in its lower edge arrived level (gap-closing that internode is reserved) by stretch-draw, stretch-draw promptly came to an end and ends, and can reduce the plasticity development of winding up, and reduces the harsh requirement to material; Pretension and the external load of rope in the post tension unit of being shaped simultaneously is opposite to the effect of lower edge, make lower edge rod member pressurized reasonable, and the cable wire of wearing in the lower edge under the load action still is in tension state, reaches the purpose that reduces construction weight, helps the span of network is done more.
Description of drawings
After Fig. 1, stretch-draw unit 1 are shaped;
Fig. 2, stretch-draw unit 1 lower edge sectional drawing (grouting back);
Fig. 3, stretch-draw unit 1 lower edge internode are reserved the seam schematic diagram;
1. (stretch-draw unit 1 is shaped preceding) before the closure of slit, 2. (1 shaping back, stretch-draw unit) after the closure of slit;
Stretch-draw forming spatial mesh structure in Fig. 4, the orthogonal type body; Fig. 5 is a stretch-draw forming spatial mesh structure specific embodiment schematic diagram in the orthogonal type body; 1. before being stretch-draw unit 1 stretch-draw forming, 2. be the 1 stretch-draw forming stage of stretch-draw unit, 3. be stretch-draw unit 1 stretch-draw forming after, 4. to 7. being assembling stretch-draw unit 1 and then constituting the spatial mesh structure process.
Among the figure, 1, the stretch-draw unit, 2, cable wire, 3, slurry, 4, wind up, 5, lower edge, 6, web member.
The specific embodiment
Specify embodiment of the present utility model below in conjunction with accompanying drawing:
Structure is referring to Fig. 1 and Fig. 4, mainly form to the forward arranged crosswise in length and breadth along the structural plan by number Pin stretch-draw unit 1, stretch-draw unit 1 is plane bow member shape, be subjected to curved pressure effect to produce plastic strain and the steel pipe along the span camber that forms winds up 4 by elongated straight steel tubular beam, straight discontinuous and steel pipe lower edge 5 that reserving gaps is closed, the steel pipe web member 6 that the termination links to each other and is connected with last lower edge in twos, the elongated cable wire of wearing in lower edge 5 pipes that is in tension state 2 is formed, wherein, web member 6 is a steel pipe, two ends and last lower chord are hinged, form after the lengths of steel pipes pressurized reserving gaps closure that lower edge 5 is distributed by curved interruption straight lengths of steel pipes constitute, be in the milk 3 between lower chord tube inwall and the cable wire; Winding up of stretch-draw unit 14 intersected in the node place in length and breadth, and mutually half just knot connect.
The manufacturing step of this structure is as follows:
1) group structure stretch-draw unit 1:
Stretch-draw unit 1 facade is plane bow member shape, form by the cable wire 2 that winds up 4, wear in lower edge 5, web member 6 and the lower edge steel pipe, before stretch-draw unit 1 stretch-draw forming, wind up 4 for elongated steel tubular beam, lower edge 5 is made up of the lengths of steel pipes of the internode reserving gaps of curved distribution, referring among Fig. 3 1., the long cable wire 2 of break-through in lower edge 5 pipes, cable wire 2 is a relaxed state, web member 6 is a steel pipe, two ends and last lower chord are hinged, referring among Fig. 5 1..
2) stretch-draw unit 1 is shaped:
During stretch-draw unit 1 stretch-draw forming; unit one end is established the bearing that is fixedly hinged; the other end is set to the slippage pivoting support; can be along the stretch-draw unit 1 span direction to striding interior slip; during stretch-draw cable wire 2; the sliding support of one end inwardly slides; and make to wind up and 4 bend up; the reserving gaps of lower edge 5 is closed gradually, when sagging lower edge by stretch-draw during to level during the gap-closing of internode reservation, referring among Fig. 3 2.; stretch-draw stops; and post-grouting 3 is fixed, referring to Fig. 2, has protected rope 2 on the one hand; it is whole stressed that lower edge 5 and cable wire 2 are bonded together; this process produces large deformation, forms the basic building block-stretch-draw unit 1 of stretch-draw forming space lattice in the orthogonal type body, referring among Fig. 5 2. and 3..
3) assembling stretch-draw unit 1, referring among Fig. 5 4., 5., 6. and 7.:
Assemble on ground: in length and breadth to the forward arranged crosswise, stretch-draw unit 1 winds up and 4 intersects in the node place in length and breadth along the structural plan in number Pin stretch-draw unit 1, and mutually half just knot connect.
(operating position) assembling aloft: set up scaffold at the construction field (site), then aloft (operating position) assembles stretch-draw unit 1 to the forward arranged crosswise in length and breadth along the structural plan
4) the stretch-draw forming spatial mesh structure is whole in the orthogonal type body promotes:
If the stretch-draw forming spatial mesh structure is assembled stretch-draw forming in the orthogonal type body on ground, then this structural entity should be risen to the operating position.Under the prestressing force effect, the stretch-draw forming spatial mesh structure belongs to self equilibrium systems in the orthogonal type body, bearing is not produced horizontal thrust, can wholely promote, lifting can structurally be installed lifting means and be promoted network, also can promote network in the construction of carrying out the pillar sliding formwork, the network of this moment can be used as operating platform.If the stretch-draw forming space lattice directly in arrangement works position (in the air) lifting combination, then need not promote work in the orthogonal type body.
5) the stretch-draw forming spatial mesh structure finally is shaped in the orthogonal type body
Network integral body is in place, and the structural capacity distributions is adjusted in passive stretch-draw under the outer load effect then, and network finally is shaped and enters duty.
Claims (1)
1, stretch-draw forming spatial mesh structure in the orthogonal type body is characterized in that: formed to the forward arranged crosswise in length and breadth along the structural plan by stretch-draw unit (1); The facade of stretch-draw unit (1) is plane bow member shape, be subjected to curved pressure effect to produce plastic strain and the steel pipe that forms wind up (4) by elongated straight steel tubular beam along the span camber, straight discontinuous and steel pipe lower edge (5) that reserving gaps is closed, the web member (6) that the termination links to each other in twos, the elongated cable wire of wearing in lower edge (5) pipe (2) that is in tension state is formed, wherein, web member (6) is a steel pipe, two ends and last lower chord are hinged, the straight lengths of steel pipes that forms after the lengths of steel pipes pressurized reserving gaps closure of lower edge (5) by curved interruption distribution constitutes, grouting (3) between lower chord tube inwall and the cable wire; Intersect in the node place wind up (4) of vertical and horizontal stretch-draw unit (1), and half firm knot connects mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620113278 CN2898155Y (en) | 2006-04-29 | 2006-04-29 | Internal orthogonal stretched space grid structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620113278 CN2898155Y (en) | 2006-04-29 | 2006-04-29 | Internal orthogonal stretched space grid structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2898155Y true CN2898155Y (en) | 2007-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620113278 Expired - Fee Related CN2898155Y (en) | 2006-04-29 | 2006-04-29 | Internal orthogonal stretched space grid structure |
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| Country | Link |
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| CN (1) | CN2898155Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105908838A (en) * | 2016-06-28 | 2016-08-31 | 山东建筑大学 | Roundabout stretching structure |
| CN111456322A (en) * | 2020-04-22 | 2020-07-28 | 上海大学 | Carbon fiber bamboo-wood mixed space beam string structure and construction method thereof |
| CN114575464A (en) * | 2022-05-07 | 2022-06-03 | 清华大学 | Building roof structure and construction method |
-
2006
- 2006-04-29 CN CN 200620113278 patent/CN2898155Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105908838A (en) * | 2016-06-28 | 2016-08-31 | 山东建筑大学 | Roundabout stretching structure |
| CN111456322A (en) * | 2020-04-22 | 2020-07-28 | 上海大学 | Carbon fiber bamboo-wood mixed space beam string structure and construction method thereof |
| CN114575464A (en) * | 2022-05-07 | 2022-06-03 | 清华大学 | Building roof structure and construction method |
| CN114575464B (en) * | 2022-05-07 | 2022-07-22 | 清华大学 | Building roof structure and construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070509 Termination date: 20120429 |