CN103741796A - Self-balancing instability-prevention prestress structure - Google Patents
Self-balancing instability-prevention prestress structure Download PDFInfo
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- CN103741796A CN103741796A CN201310325851.9A CN201310325851A CN103741796A CN 103741796 A CN103741796 A CN 103741796A CN 201310325851 A CN201310325851 A CN 201310325851A CN 103741796 A CN103741796 A CN 103741796A
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Abstract
The invention provides a self-balancing instability-prevention prestress structure. The self-balancing instability-prevention prestress structure comprises a steel structure and a prestress cable net. The steel structure comprises a plurality of steel structure main rod parts and steel structure secondary rod parts, wherein the steel structure main rod parts and the steel structure secondary rod parts are orthogonal to form the steel structure, and orthogonal joints of the steel structure main rod parts and the steel structure secondary rod parts are of a rigid connection structure. The prestress cable net comprises a plurality of main prestress cables and supporting rods, one end of each supporting rod is connected with one orthogonal joint of the steel structure, the other ends of the supporting rods are converged and are in rigid connection, each supporting rod and the connecting points between the supporting rod and the steel structure form a double-axis symmetrical polygon, and the polygons and the converging rigid-connecting point form a pyramid, one end of each main prestress cable is connected with one orthogonal joint of the steel structure, and the other end of each main prestress cable is connected with the conical point of the pyramid. In the self-balancing instability-prevention prestress structure, a side-direction stability cable is not needed, but the self-balancing instability-prevention prestress structure is better in mechanical property and good in stability.
Description
Technical field
The present invention relates to a kind of steel work, especially provide a kind of self-balancing anti-unstability prestressed structure.
Background technology
In prior art, common self-balance prestress rope net system as shown in Figure 1, comprising steel work and prestressed cable net, steel work is that time rod member 01-02 is orthogonal forms by steel work main rod 01-01 and steel work, prestressed cable net is comprised of main prestressed cable 01-04 and lateral stability rope 01-05, main prestressed cable 01-04 two ends is connected in steel work main rod 01-01 two ends, between main prestressed cable 01-04 and steel work main rod 01-01, is connected strut 01-03.Steel work main rod 01-01 forms a slice prestressing force self-balancing fish belly frame by strut 01-03 and main prestressed cable 01-04, steel work main rod 01-01 two ends are connected with agent structure, strut 01-03 one end and steel work main rod 01-01 rigidly connect, and the strut 01-03 other end and main prestressed cable 01-04 are hinged.Between steel work main rod 01-01, by steel work time rod member 01-02, connect the resistance to overturning that guarantees steel work main rod 01-01, while steel work time rod member 01-02 serves as secondary joist and bears deck load.Between main prestressed cable 01-04, drawknot lateral stability rope 01-05 guarantees the lateral stability of monolithic fish belly frame.
As can be known from Fig. 1, main prestressed cable 01-04 and main steel frame are that steel work main rod 01-01 is in same plane.At main prestressed cable 01-04, apply after prestressing force, main steel frame can produce bending, and at this moment main prestressed cable and main steel frame plane can produce the main prestressed cable deflection of torsion becomes the main prestressed cable 01-04 ' of displacement, as shown in Figure 2.If this torsion is not controlled, can cause structural failure.Conventionally all needing lateral stability rope 01-05 is the side direction unstability that horizontal Suo Lajie just can prevent self equilibrium systems.
Balance prestressed cable net system of the prior art, steel work main rod and main prestressed cable form the system of monolithic form, and stability is bad, and lateral stability rope need to be set, and when integrated steel-structure is comparatively long and narrow, lateral stability rope is that the use amount of horizontal rope is very big.Horizontal rope is owing to there is no corresponding self-balance structure, so also very large to the burden of agent structure simultaneously.
Summary of the invention
Main purpose of the present invention is to provide a kind of self-balancing anti-unstability prestressed structure, in this structure, can not use lateral stability rope, but mechanical property is better, has good stability.
The object of the present invention is achieved like this:
The anti-unstability prestressed structure of a kind of self-balancing, it comprises steel work and prestressed cable net, described steel work comprises some steel work main rods and steel work time rod member, the orthogonal setting of described steel work main rod and steel work time rod member forms described steel work, and the orthogonal node of steel work main rod and steel work time rod member is for rigidly connecting structure; Described prestressed cable net comprises some main prestressed cables and strut, one end of every described strut is connected with an orthogonal node in described steel work, the other end of every strut converges together and rigidly connects, two axisymmetric polygon of tie point composition of each strut and described steel structure connection, with formation one pyramid that rigidly connects converging; An orthogonal node described in each in one end of main prestressed cable and described steel work is hinged, and the other end of described main prestressed cable is connected with the cone point of described pyramid.
Described two axisymmetric figure is figure two Symmetric Orthogonal axles in same plane.
In use, this steel work is connected with agent structure.
Described in each, the hinged orthogonal node of main prestressed cable and steel work is all in described polygonal outside.
Described in each root, main prestressed cable all has described in another root main prestressed cable corresponding with it on its extended line.
Further, two corresponding described main prestressed cables in same rectilinear direction a little connect into one rigidly connecting, form and close main prestressed cable, its through described cone point formation rigidly connect a little on perforation.
Described strut can be hinged with being connected of orthogonal node of steel work, can be also to rigidly connect.
Described strut can be four, the six roots of sensation ..., the connector composition quadrangle of itself and the orthogonal node of steel work, hexagon ...
A preferred version is: described strut is four, it is one square that itself and the orthogonal node tie point of steel work form, can be square or rectangular, described main prestressed cable is four, itself and the orthogonal node pin joint of steel work form a rectangle, two pin joints of the steel work main rod direction of described steel work or steel work time rod member with corresponding two tie points of strut on same steel work main rod or the same inferior rod member of steel work, two main prestressed cables in same rectilinear direction are connected to become one and close main prestressed cable, two these main prestressed cables with described in rigidly connect an one end being connected and be connected as a single entity, and be connected with rigidly connecting with the perforation means on rigidly connecting a little described in passing.
Described main prestressed cable is on main joist with the steel work main rod that the link position of described steel work should be connected in described strut on steel work, or, on the steel work connecting on steel work in described strut time rod member.
The anti-unstability prestressed structure of self-balancing provided by the invention, two tapers of some main prestressed cable wherein and strut composition, Special composition form of structure, has better stability with respect to the monolithic fish belly frame monolithic form of conventionally form.In addition, in conventionally form of the prior art, under each steel work main rod, need to have a main prestressed cable for steel work main rod antiarch effect is provided, and the present invention can also can be described as by strut and steel work time rod member the acting in conjunction of secondary beam, for example two antiarch effects of closing main prestressed cable or many main prestressed cables that intersect are delivered on many steel work main rods, by rational layout make many steel work main rods share for example two close main prestressed cable, the anti-unstability prestressed structure of this self-balancing makes each root steel work main rod to obtain corresponding antiarch effect by prestressing force, .Can reduce by rational spine arrangement form the quantity of main prestressed cable simultaneously.Like this, just can greatly improve the utilization rate of main prestressed cable, can save material simultaneously; It is horizontal rope for prestress system provides the ability of opposing unstability that conventionally form needs multiple tracks lateral stability rope, and the anti-unstability prestressed structure of self-balancing provided by the invention does not have horizontal rope, simultaneously can the more effective side direction unstability that prevents, and economic benefit is very considerable.
Accompanying drawing explanation
Fig. 1 is the structural representation of self-balance prestress rope net system of the prior art.
Fig. 2 cancels the schematic diagram that unstability appears in lateral stability rope in self-balance prestress rope net system of the prior art.
Fig. 3 is the structural representation of the anti-unstability prestressed structure of self-balancing provided by the invention.
Fig. 4 is the structural representation of two pyramidal structures that in the anti-unstability prestressed structure of self-balancing provided by the invention, main prestressed cable and strut form.
Fig. 5 is the schematic diagram of two pyramidal structures shown in Fig. 4 and steel structure connection.
Fig. 6 to Fig. 9 is the structural representation of other four kinds of structures of strut provided by the invention and main prestressed cable.
The specific embodiment
As shown in Figures 3 to 5, the anti-unstability prestressed structure of self-balancing provided by the invention, it comprises steel work and prestressed cable net, described steel work comprises some steel work main rod 01-01 and steel work time rod member 01-02, the orthogonal setting of described steel work main rod 01-01 and steel work time rod member 01-02 forms described steel work, and this steel work is connected with agent structure; Described prestressed cable net comprises that two are closed main prestressed cable 02-02 and four strut 02-01, one end of every strut 02-01 is connected with an orthogonal node in described steel work, in this embodiment for rigidly connecting connection, the other end of every strut converges together and rigidly connects, form the cone point O of a junction, on the cone point O rigidly connecting, perforation is set; Described in every, close an orthogonal node A in one end and the described steel work of main prestressed cable 02-02 hinged, described in close main prestressed cable through described perforation, its other end and steel work another orthogonal node hinged.
Described in each, the tie point of the orthogonal node A of strut 02-01 and steel work forms a quadrangle, and described in each, main prestressed cable 02-02 and hinged four the orthogonal Node B of steel work of closing are all in described tetragonal outside.And two are closed main prestressed cable 02-02, four hinged pin joints of itself and the orthogonal node A of steel work form a rectangle, two of the steel work main rod direction of described steel work, close the pin joint of main prestressed cable and corresponding two tie points of strut on same steel work main rod.One close two of main prestressed cable 02-01 from the pin joint of steel work on different steel work main rods, make two cross-shaped state settings of main prestressed cable 02-02.
In the above-described embodiments, the main member that forms the anti-unstability prestressed structure of self-balancing is that four strut 02-01 and two cable wires close main prestressed cable 02-02, four strut 02-01 connect into side's taper, by at the bottom of the cone of the party's taper, be strut 02-01 end and steel work namely steelframe be connected, connected mode is hinged, link position need to have the keel of transverse and longitudinal both direction, one of them direction is the main joist of structure, another end of each strut intersects at the most advanced and sophisticated also employing of strut and rigidly connects connection, form the cone point O of the party's taper, with cable wire, passing cone point is connected with steel work, the square pyramidal system that form is similar to brace rod style, it is on main joist that cable wire should be bored the steel work main rod being connected in strut side with the link position of steel work, and cable wire is applied to prestressing force formation prestressing force self equilibrium systems.
The present invention has the feature of conventional self-balance prestress structure, and meanwhile, its innovative point is: can find out, two tapers in this structure provided by the invention are space form, with respect to the monolithic form of conventionally form, have good stability; Can reduce by rational spine arrangement form the quantity of main prestressed cable, under steel work main rod 01-01 as each in conventionally form, need to have a main prestressed cable 01-04 for prestressing force is provided, and the present invention can be by reasonably arranging, make many steel work main rods share two main prestressed cables, greatly improved the utilization rate of main prestressed cable, can save material simultaneously; Conventionally form needs multiple tracks lateral stability rope 01-05, for prestress system provides the ability of resisting unstability, when integrated steel-structure is comparatively long and narrow, the use amount of horizontal rope is very big, so horizontal rope is because the burden of the structure that does not have corresponding self-balance structure to main body is also very large simultaneously, and the present invention does not have this lateral stability rope, but it but can more effectively prevent side direction unstability, and economic benefit is very considerable.
The polygon of each strut in the present invention and the tie point A of described steel structure connection composition, as long as a two axisymmetric polygon, as shown in Figures 6 to 9, it can be rectangle, can certainly be square (not shown), can also be hexagon etc., answers in contrast ground, main prestressed cable can be four, the six roots of sensation, can also be eight (situations of not shown eight).Two main prestressed cables on same straight line, it can be to tie up to separately separately on cone point with the perforation rigidly connecting a little, but such structure is not easy to allow the prestressing force forming on two main prestressed cables on same straight line equate, and two main prestressed cables on same straight line are linked together and become one and long close main prestressed cable, through the perforation on rigidly connecting a little, like this, being formed as the prestressing force on two main prestressed cables that close main prestressed cable just must equate, can make the anti-unstability prestressed structure of this self-balancing stressing conditions more reasonable.
Tool of the present invention has the following advantages:
1. can effectively optimize the form of structure of large-span steel, reduce steel using amount.
2. with respect to conventional self-balance prestress structure, the present invention need not use prestressed cable by every main joist, has reduced the use amount of rope.
3. for example square tapered of strut composition, forms stable space structures with transverse and longitudinal direction keel after being connected, the drawknot of main prestressed cable also can form a square tapered simultaneously, and so also can make cable wire system is rock-steady structure.
4. under the condition of self-stabilization, can save lateral stability rope, cost saving.
Claims (8)
1. the anti-unstability prestressed structure of self-balancing, it is characterized in that: comprise steel work and prestressed cable net, described steel work comprises some steel work main rods and steel work time rod member, the orthogonal setting of described steel work main rod and steel work time rod member forms described steel work, and the orthogonal node of steel work main rod and steel work time rod member is for rigidly connecting structure; Described prestressed cable net comprises some main prestressed cables and strut, one end of every described strut is connected with an orthogonal node in described steel work, the other end of every strut converges together and rigidly connects, two axisymmetric polygon of tie point composition of each strut and described steel structure connection, with formation one pyramid that rigidly connects converging; An orthogonal node described in each in one end of main prestressed cable and described steel work is hinged, and the other end of described main prestressed cable is connected with the cone point of described pyramid.
2. the anti-unstability prestressed structure of self-balancing according to claim 1, is characterized in that: described in each, the hinged orthogonal node of main prestressed cable and steel work is all in described polygonal outside.
3. the anti-unstability prestressed structure of self-balancing according to claim 1 and 2, is characterized in that: described in each root, main prestressed cable all has described in another root main prestressed cable corresponding with it on its extended line.
4. the anti-unstability prestressed structure of self-balancing according to claim 3, it is characterized in that: two corresponding described main prestressed cables in same rectilinear direction a little connect into one rigidly connecting, main prestressed cable is closed in formation, and it is through the perforation a little that rigidly connects of described cone point formation.
5. according to the anti-unstability prestressed structure of the self-balancing one of claim 1 to 4 Suo Shu, it is characterized in that: described strut is four or the six roots of sensation connector composition quadrangle or the hexagon of itself and the orthogonal node of steel work.
6. the anti-unstability prestressed structure of self-balancing according to claim 5, it is characterized in that: described strut is four, it is one square that itself and the orthogonal node tie point of steel work form, be square or rectangular, described main prestressed cable is four, itself and the orthogonal node pin joint of steel work form a rectangle, two pin joints of the steel work main rod direction of described steel work or steel work time rod member with corresponding two tie points of strut on same steel work main rod or the same inferior rod member of steel work, two main prestressed cables in same rectilinear direction are connected to become one and close main prestressed cable, two these main prestressed cables are connected as a single entity with the one end being connected that rigidly connects that described cone point forms, and be connected with rigidly connecting with the perforation means on rigidly connecting a little described in passing.
7. according to the anti-unstability prestressed structure of the self-balancing one of claim 1 to 6 Suo Shu, it is characterized in that:
Described main prestressed cable is main joist with the steel work main rod that the link position of described steel work should be connected in described strut on steel work, or, on the steel work connecting on steel work in described strut time rod member.
8. according to the anti-unstability prestressed structure of the self-balancing one of claim 1 to 7 Suo Shu, it is characterized in that: described strut is hinged with being connected of orthogonal node of steel work, or rigidly connects.
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| CN201310325851.9A CN103741796B (en) | 2013-07-30 | 2013-07-30 | The anti-unstability prestressed structure of self-balancing |
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| CN201310325851.9A CN103741796B (en) | 2013-07-30 | 2013-07-30 | The anti-unstability prestressed structure of self-balancing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105350646A (en) * | 2015-10-23 | 2016-02-24 | 东南大学 | Two-dimensional tensegrity structure unit based on hexagon geometry |
| CN107882246A (en) * | 2017-11-27 | 2018-04-06 | 湖南大学 | One kind segmentation string prestressed giant latticed shell structure |
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| GB1504346A (en) * | 1975-08-29 | 1978-03-22 | Elspan Int | Method of constructing a curved roof structure |
| JP2002047730A (en) * | 2000-08-02 | 2002-02-15 | Shimizu Corp | Roof structure |
| CN101260704A (en) * | 2008-04-11 | 2008-09-10 | 晟元集团有限公司 | Local double layer open chord spherical reticulated shell |
| CN202611067U (en) * | 2012-03-08 | 2012-12-19 | 东南大学 | Cable-strut folding grid structure |
| CN203452188U (en) * | 2013-07-30 | 2014-02-26 | 江河创建集团股份有限公司 | Self-balancing pre-stressed structure preventing instability |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1504346A (en) * | 1975-08-29 | 1978-03-22 | Elspan Int | Method of constructing a curved roof structure |
| JP2002047730A (en) * | 2000-08-02 | 2002-02-15 | Shimizu Corp | Roof structure |
| CN101260704A (en) * | 2008-04-11 | 2008-09-10 | 晟元集团有限公司 | Local double layer open chord spherical reticulated shell |
| CN202611067U (en) * | 2012-03-08 | 2012-12-19 | 东南大学 | Cable-strut folding grid structure |
| CN203452188U (en) * | 2013-07-30 | 2014-02-26 | 江河创建集团股份有限公司 | Self-balancing pre-stressed structure preventing instability |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105350646A (en) * | 2015-10-23 | 2016-02-24 | 东南大学 | Two-dimensional tensegrity structure unit based on hexagon geometry |
| CN107882246A (en) * | 2017-11-27 | 2018-04-06 | 湖南大学 | One kind segmentation string prestressed giant latticed shell structure |
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| CN103741796B (en) | 2016-02-17 |
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