CN2921141Y - Large-span peripheral triangle cone bearing body internal mansard prestress steel rack - Google Patents
Large-span peripheral triangle cone bearing body internal mansard prestress steel rack Download PDFInfo
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- CN2921141Y CN2921141Y CN 200620200602 CN200620200602U CN2921141Y CN 2921141 Y CN2921141 Y CN 2921141Y CN 200620200602 CN200620200602 CN 200620200602 CN 200620200602 U CN200620200602 U CN 200620200602U CN 2921141 Y CN2921141 Y CN 2921141Y
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- steel mesh
- mesh frame
- prestressed
- span
- steel
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Abstract
The utility model discloses a pre-stressed steel grid supporting broken line on the large span peripheral triangular supporter. The utility model comprises a steel grid (1) and a pre-stressed steel wire rope (2). The connection of the steel grid (1) is made from a peripheral triangular wimble and an internal four-angle wimble. A steering device (3) is arranged on a slope rope part in the steel grid (1) and a driving device (4)is arranged on last quarter node of the middle of the steel grid (1). Both ends of the pre-stressed steel wire rope (2) are respectively fixed on two bracket node (11) of the steel grid (1) after the pre-stressed steel wire rope (2) goes through the driving device (4) and the steering device (3); the utility model has advantages of convenient construction, obvious pre-stress effect, good withstand ability, reasonable room in building without any remained space and low cost. The total price for the construction can be decreased by twenty to twenty-five per cent.
Description
Technical field:
The utility model relates to a kind of roof system or superstructure, especially a kind of large span (periphery triangular pyramid simple-supporting and inside folding prestressed steel mesh frame of L 〉=60m).
Background technology:
The simple supported edge of being introduced by foreign country is honoured the indoor external folding prestressed dull and stereotyped steel mesh frame of linea angulata because when cable wire diagonal cloth rope, one ask for be divided into two and pass around both sides, the rack montant outside, stretch-draw, anchored end also is divided into two, collide for avoiding diagonal horizontal segment cable wire crosspoint, need the indoor strut that exposes is arranged along the diagonal one high and one low, prevent the cable wire interlock and collide the complexity of constructing; In addition, broken line diagonal angle cable wire exposes the strut height in the indoor central authorities of rack, and indoor redundant headroom is increased, and strut is depression bar, and stress performance is not as pull bar; Active force is big more because pre-stressed struts makes progress, prestressing effect is remarkable more, active force is and large and small being directly proportional of cable wire broken line angle and strut makes progress, because diagonal broken line length than the big of span direction length doubly, then the corresponding ratio of its angle is little 1.414 times along span direction broken line angle, then the prestressing force active force that makes progress is also little 1.44 times, and prestressing effect is than little 1.414 times along span direction broken line cloth rope.
Summary of the invention:
The purpose of this utility model is: the large-span periphery triangular pyramid simple-supporting and inside folding prestressed steel mesh frame that provide a kind of easy construction, prestressing effect is remarkable, stress performance good, do not increase the indoor redundant space of building, cost is low, and to overcome the deficiencies in the prior art.
The utility model is to constitute like this: it comprises steel mesh frame and prestressed cable, the steel mesh frame is connected and composed by the pyrometric cone of periphery and inner quadrangular pyramid, the middle part lower-chord panel point of steel mesh frame is provided with load transfer device, and its two ends were separately fixed on the deck type support node of steel mesh frame after prestressed cable passed load transfer device.
Oblique cord in the steel mesh support body is provided with guiding device.
Prestressed cable is arranged in the steel mesh frame and along span direction pairwise orthogonal and arranges that the spacing between the prestressed cable of one of them direction is 1～2 grid, and the spacing between the prestressed cable of another direction of quadrature is 3～4 grids with it.
Guiding device is made of steel pipe socket and the montant that is fixed on the steel pipe socket bottom, and prestressed cable is through in the steel pipe socket, and the other end of montant is fixed on the central authorities of four diagonal web members of quadrangular pyramid lower edge ball node.
Load transfer device is made of steel case, the pull bar that is contained in the fixed pulley in the steel case and is fixed on steel case bottom, and the other end of pull bar is fixed on the central authorities of four diagonal web members of quadrangular pyramid lower edge ball node.
The load transfer device of two orthogonal directions is contour, and the horizontal segment of the prestressed cable of two orthogonal directions is not collided, not interlock.
Prestressed cable of the present utility model is at steel mesh frame span direction correspondence and quadrature cloth rope in twos, four power transmission points are the most central at rack, four power transmission points are peripheral in central authorities in addition, upwards power transmission o'clock becomes eight by four, prestressing effect is more remarkable, and power transmission point changes pull bar into by depression bar, the stress performance improvement, its horizontal line section of while equal altitudes in the steel mesh frame, it is more convenient to construct; And folding prestressed cable wire of the present utility model is arranged in the steel mesh support body, do not increase the indoor redundant space of building; Prestressed cable and steel mesh frame span direction quadrature cloth rope, cable wire broken line length is littler 1.414 times than diagonal cloth rope length, and then angle increases 1.414 times, and the prestressing force active force that makes progress increases 1.414 times, strengthened prestressing effect, thereby made the building comprehensive cost descend 20～25%.
Description of drawings:
Accompanying drawing 1 is a plane structure schematic diagram of the present utility model;
Accompanying drawing 2 is the A-A sectional view of accompanying drawing 1;
Accompanying drawing 3 is the B-B sectional view of accompanying drawing 1;
Accompanying drawing 4 is the structural representation of guiding device of the present utility model;
Accompanying drawing 5 is the structural representation of load transfer device of the present utility model.
The specific embodiment:
Embodiment of the present utility model: as shown in Figure 1, it comprises steel mesh frame 1 and prestressed cable 2, and wherein steel mesh frame 1 is connected and composed by the pyrometric cone of periphery and inner quadrangular pyramid; Prestressed cable 2 is arranged in steel mesh frame 1 body and along span direction pairwise orthogonal and arranges, along the span direction and with the direction of span quadrature on respectively be provided with two prestressed cables 2, along the spacing between two prestressed cables 2 of span direction is 1～2 grid, spacing between two of another direction of quadrature prestressed cables 2 strengthens two grids on the former basis with it, be 3～4 grids, shown in accompanying drawing 2 or accompanying drawing 3, on two oblique cord sections about in steel mesh frame 1 body of span direction, respectively be provided with a guiding device 3, with steel mesh frame 1 body of span direction quadrature in left and right sides oblique cord section on also respectively be provided with a guiding device 3, to reduce the sag of prestressed cable 2; Guiding device 3 respectively is provided with one or two at oblique cord Duan Shangke, is provided with one still two, need decide according to the span of steel mesh frame 1, and generally when span during greater than 60m, every limit is established one, when span greater than 60m, during less than 120m, every limit should be established 2～3; Each guiding device 3 is made of steel pipe socket 5 and the montant 6 that is fixed on steel pipe socket 5 bottoms, and prestressed cable 2 is through in the steel pipe socket 5, and as shown in Figure 4, the other end of montant 6 is fixed on the central authorities of four diagonal web members of quadrangular pyramid lower edge ball node; The internal diameter of steel pipe socket 5 is than the big 10mm～20mm of diameter of prestressed cable 2.Central lower-chord panel point along the steel mesh frame 1 of span direction is provided with two load transfer devices 4, with the central lower-chord panel point of the steel mesh frame 1 of span direction quadrature on also be provided with two load transfer devices 4, and the load transfer device 4 of two orthogonal directions is contour, and the horizontal segment cable wire of two orthogonal direction prestressed cables 2 is not collided, yet not interlock; Each load transfer device 4 is made of steel case 7, the pull bar 9 that is contained in a fixed pulley 8 in the steel case 7 and is fixed on steel case 7 bottoms, and as shown in Figure 5, the other end of pull bar 9 is fixed on the central authorities of four diagonal web members of quadrangular pyramid lower edge ball node.Prestressed cable 2 passes load transfer device 4 and its two ends, guiding device 3 back are separately fixed on the deck type support node 10 of steel mesh frame 1;
After setting up prestressing force, the pretension of prestressed cable 2 produces the active force of upwards lifting, and pass to pull bar 9 by the fixed pulley bearing of load transfer device 4, promptly pass to lower-chord panel point, make steel mesh frame 1 after setting up prestressing force, eight load transfer devices 4 in steel mesh frame 1 central authorities produce the active force of upwards lifting, be that steel mesh frame 1 is becoming kenel to produce the opposite internal force of internal force that produces with steel mesh frame load attitude, when steel mesh frame 1 is in user mode like this, be into the stack of kenel and load attitude internal force, thereby the internal force of steel mesh frame 1 is reduced,, reduce cost to reduce to join the bar steel using amount.
Claims (6)
1. large-span periphery triangular pyramid simple-supporting and inside folding prestressed steel mesh frame, it comprises steel mesh frame (1) and prestressed cable (2), it is characterized in that: steel mesh frame (1) is connected and composed by the pyrometric cone of periphery and inner quadrangular pyramid, the middle part lower-chord panel point of steel mesh frame (1) is provided with load transfer device (4), and prestressed cable (2) passes its two ends, load transfer device (4) back and is separately fixed on the deck type support node (10) of steel mesh frame (1).
2. large-span periphery triangular pyramid simple-supporting and inside folding prestressed steel mesh frame according to claim 1 is characterized in that: the oblique cord in steel mesh frame (1) body is provided with guiding device (3).
3. large-span periphery triangular pyramid simple-supporting and inside folding prestressed steel mesh frame according to claim 1, it is characterized in that: prestressed cable (2) is arranged in steel mesh frame (1) body and along span direction pairwise orthogonal and arranges, spacing between the prestressed cable of one of them direction (2) is 1～2 grid, and the spacing between the prestressed cable of another direction of quadrature (2) is 3～4 grids with it.
4. large-span periphery triangular pyramid simple-supporting and inside folding prestressed steel mesh frame according to claim 2, it is characterized in that: guiding device (3) is made of steel pipe socket (5) and the montant (6) that is fixed on steel pipe socket (5) bottom, prestressed cable (2) is through in the steel pipe socket (5), and the other end of montant (6) is fixed on the central authorities of four diagonal web members of quadrangular pyramid lower edge ball node.
5. according to claim 1 or 3 described large-span periphery triangular pyramid simple-supporting and inside folding prestressed steel mesh framves, it is characterized in that: load transfer device (4) by steel case (7), be contained in the fixed pulley (8) in the steel case (7) and be fixed on pull bar (9) formation of steel case (7) bottom, the other end of pull bar (9) is fixed on the central authorities of four diagonal web members of quadrangular pyramid lower edge ball node.
6. large-span periphery triangular pyramid simple-supporting and inside folding prestressed steel mesh frame according to claim 1, it is characterized in that: the load transfer device of two orthogonal directions (4) is contour, and the horizontal segment of the prestressed cable of two orthogonal directions (2) is not collided, not interlock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620200602 CN2921141Y (en) | 2006-07-07 | 2006-07-07 | Large-span peripheral triangle cone bearing body internal mansard prestress steel rack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620200602 CN2921141Y (en) | 2006-07-07 | 2006-07-07 | Large-span peripheral triangle cone bearing body internal mansard prestress steel rack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2921141Y true CN2921141Y (en) | 2007-07-11 |
Family
ID=38253620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620200602 Expired - Fee Related CN2921141Y (en) | 2006-07-07 | 2006-07-07 | Large-span peripheral triangle cone bearing body internal mansard prestress steel rack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2921141Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102660996A (en) * | 2012-05-29 | 2012-09-12 | 广西建工集团第五建筑工程有限责任公司 | Multilevel multi-curve single-layer welding ball steel structure net rack and construction method thereof |
-
2006
- 2006-07-07 CN CN 200620200602 patent/CN2921141Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102660996A (en) * | 2012-05-29 | 2012-09-12 | 广西建工集团第五建筑工程有限责任公司 | Multilevel multi-curve single-layer welding ball steel structure net rack and construction method thereof |
| CN102660996B (en) * | 2012-05-29 | 2014-05-14 | 广西建工集团第五建筑工程有限责任公司 | Multilevel multi-curve single-layer welding ball steel structure net rack and construction method thereof |
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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: 20070711 Termination date: 20110707 |