CN1877038A - Large-span periphery simple-supporting and inside folding prestressed steel grid structure - Google Patents
Large-span periphery simple-supporting and inside folding prestressed steel grid structure Download PDFInfo
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- CN1877038A CN1877038A CN 200610200674 CN200610200674A CN1877038A CN 1877038 A CN1877038 A CN 1877038A CN 200610200674 CN200610200674 CN 200610200674 CN 200610200674 A CN200610200674 A CN 200610200674A CN 1877038 A CN1877038 A CN 1877038A
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- steel mesh
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Abstract
The invention relates to a fold line pre-stress steel net support of large span periphery support, which comprises steel net support (1) and pre-stress steel cable (2). Wherein, the steel net support (1) is formed by connected four-angle tapers; the incline cable of steel net support (1) is arranged with steering device (3); the low arc node of middle part of steel net support (1) is arranged with force sensor (4); the two ends of pre-stress steel cable (2) through the force sensor (4) and steering device (3) are fixed to two upper support base node (10) of steel net support (1). The invention has better pre-stress effect, better bearing ability and lower cost that reduced 20-25%.
Description
Technical field:
The present invention relates to a kind of roof system or building cover structure, especially a kind of large span (periphery simple-supporting and inside folding prestressed steel grid structure 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 span direction length Da 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 objective of the invention is to: the large-span periphery simple-supporting and inside folding prestressed steel grid structure 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, to overcome the deficiencies in the prior art.
The present invention is achieved in that it comprises steel mesh frame and prestressed cable, the steel mesh frame connects and composes by just putting quadrangular pyramid, oblique cord section in the steel mesh support body is provided with transfer, 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 two deck type support nodes of steel mesh frame after prestressed cable passed load transfer device and transfer.
Prestressed cable is arranged in the steel mesh support body 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.
Transfer is made of steel plate case, the montant that is contained in the fixed pulley in the steel plate case and is fixed on steel plate case bottom, 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 anchored end of every prestressed cable and stretch-draw end are separately positioned on adjacent two deck type support nodes of steel mesh frame, two strands of prestressed cables that are fixed on anchored end and stretch-draw end turn to the back to tilt to load transfer device to steel mesh frame central authorities by transfer, are combined into one.
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 invention 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 invention 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 invention;
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 transfer of the present invention;
Accompanying drawing 5 is the structural representation of load transfer device of the present invention.
The specific embodiment:
Embodiments of the invention: as shown in Figure 1, it comprises steel mesh frame 1 and prestressed cable 2, and steel mesh frame 1 connects and composes the deck type simple supported edge and holds rack by just putting 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 transfer 3, with steel mesh frame 1 body of span direction quadrature in about also respectively be provided with a transfer 3 on the two oblique cord sections, each transfer 3 is by steel plate case 5, two fixed pulleys 6 that are contained in the steel plate case 5 constitute with the montant 7 that is fixed on steel plate case 5 bottoms, as shown in Figure 4, the other end of montant 7 is fixed on the central authorities of four diagonal web members of quadrangular pyramid lower edge ball node; 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 8, the pull bar 10 that is contained in two fixed pulleys 9 in the steel case 8 and is fixed on steel case 8 bottoms, and as shown in Figure 5, the other end of pull bar 10 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, transfer 3 back are separately fixed on two deck type support nodes 11 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 10 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, thereby reduce to join the bar steel using amount.The anchored end of every prestressed cable 2 and stretch-draw end are separately positioned on adjacent two deck type support nodes 11 of steel mesh frame 1, be that prestressed cable 2 is divided into two sections at the stretch-draw anchor end, and two strands of prestressed cables 2 turn to the back to be tilted in the 3rd grid by behind the transfer 3 to steel mesh frame 1 central authorities by transfer 3, are combined into one again at load transfer device 4 places.
The on-the-spot installation adopted in the installation of steel mesh frame 1, join prestressed cable 2 on request after, set up prestressing force, the support node place horizontal force of steel mesh frame 1 is winded up by rack and bears, and forms internal stress, its vertical stress component is born by the bearing load-carrying construction; Position at load transfer device 4, prestressing force makes montant 7 tensions, to one of lower-chord panel point effect and steel mesh frame 1 load direction opposite effect power, steel mesh frame 1 is produced and the reverse active force of load action, thereby reach when the user mode that becomes two kinds of duty stacks of form and load attitude back to form, the effect that rod member internal force reduces, thus steel using amount reduced, reduce cost.
Claims (6)
1. large-span periphery simple-supporting and inside folding prestressed steel grid structure, it comprises steel mesh frame (1) and prestressed cable (2), it is characterized in that: steel mesh frame (1) connects and composes by just putting quadrangular pyramid, oblique cord section in steel mesh frame (1) body is provided with transfer (3), the middle part lower-chord panel point of steel mesh frame (1) is provided with load transfer device (4), and prestressed cable (2) passes load transfer device (4) and its two ends, transfer (3) back are separately fixed on two deck type support nodes (11) of steel mesh frame (1).
2. large-span periphery simple-supporting and inside folding prestressed steel grid structure 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.
3. large-span periphery simple-supporting and inside folding prestressed steel grid structure according to claim 1, it is characterized in that: transfer (3) by steel plate case (5), be contained in the fixed pulley (6) in the steel plate case (5) and be fixed on montant (7) formation of steel plate case (5) bottom, the other end of montant (7) is fixed on the central authorities of four diagonal web members of quadrangular pyramid lower edge ball node.
4. large-span periphery simple-supporting and inside folding prestressed steel grid structure according to claim 1, it is characterized in that: load transfer device (4) by steel case (8), be contained in the fixed pulley (9) in the steel case (8) and be fixed on pull bar (10) formation of steel case (8) bottom, the other end of pull bar (10) is fixed on the central authorities of four diagonal web members of quadrangular pyramid lower edge ball node.
5. large-span periphery simple-supporting and inside folding prestressed steel grid structure according to claim 1, it is characterized in that: the anchored end of every prestressed cable (2) and stretch-draw end are separately positioned on adjacent two deck type support nodes (11) of steel mesh frame (1), the two strands of prestressed cables (2) that are fixed on anchored end and stretch-draw end turn to the back to tilt to load transfer device (4) to steel mesh frame (1) central authorities by transfer (3), are combined into one.
6. folding prestressed steel grid structure in the large-span periphery freely-supported body 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 |
|---|---|---|---|
| CNB2006102006741A CN100453752C (en) | 2006-07-07 | 2006-07-07 | Large-span periphery simple-supporting and inside folding prestressed steel grid structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006102006741A CN100453752C (en) | 2006-07-07 | 2006-07-07 | Large-span periphery simple-supporting and inside folding prestressed steel grid structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1877038A true CN1877038A (en) | 2006-12-13 |
| CN100453752C CN100453752C (en) | 2009-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006102006741A Expired - Fee Related CN100453752C (en) | 2006-07-07 | 2006-07-07 | Large-span periphery simple-supporting and inside folding prestressed steel grid structure |
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| CN (1) | CN100453752C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235055A (en) * | 2010-04-26 | 2011-11-09 | 湖南大学 | Stayed prestressed orthogonal space tube truss steel grid structure and manufacturing method thereof |
| CN102235031A (en) * | 2010-04-26 | 2011-11-09 | 湖南大学 | Super-large span variable section double-layer and three-layer prestressed rib beam type net rack and making method |
| CN104213634A (en) * | 2014-09-04 | 2014-12-17 | 江苏沪宁钢机股份有限公司 | Cellular outer mesh frame structure |
| CN117740222B (en) * | 2024-02-21 | 2024-04-26 | 贵州大学 | Wood-like beam prestress testing device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU7375491A (en) * | 1990-03-22 | 1991-10-03 | Andrea Mario Stodulka | Building construction |
| CA2298728A1 (en) * | 2000-02-16 | 2001-08-16 | Wayne Rendely | New extrusion design and fabric installation method for weather tight seal |
| CN1478958A (en) * | 2003-06-10 | 2004-03-03 | 兰州理工大学 | Fan type bowstring prestressed structure used for large span building system |
-
2006
- 2006-07-07 CN CNB2006102006741A patent/CN100453752C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235055A (en) * | 2010-04-26 | 2011-11-09 | 湖南大学 | Stayed prestressed orthogonal space tube truss steel grid structure and manufacturing method thereof |
| CN102235031A (en) * | 2010-04-26 | 2011-11-09 | 湖南大学 | Super-large span variable section double-layer and three-layer prestressed rib beam type net rack and making method |
| CN102235031B (en) * | 2010-04-26 | 2012-10-03 | 湖南大学 | Super-large span variable section double-layer and three-layer prestressed rib beam type net rack and making method |
| CN102235055B (en) * | 2010-04-26 | 2013-07-03 | 湖南大学 | Stayed prestressed orthogonal space tube truss steel grid structure and manufacturing method thereof |
| CN104213634A (en) * | 2014-09-04 | 2014-12-17 | 江苏沪宁钢机股份有限公司 | Cellular outer mesh frame structure |
| CN117740222B (en) * | 2024-02-21 | 2024-04-26 | 贵州大学 | Wood-like beam prestress testing device |
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| Publication number | Publication date |
|---|---|
| CN100453752C (en) | 2009-01-21 |
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