CN112982794A - Prestressed beam resisting wind suction force - Google Patents
Prestressed beam resisting wind suction force Download PDFInfo
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- CN112982794A CN112982794A CN202110174723.3A CN202110174723A CN112982794A CN 112982794 A CN112982794 A CN 112982794A CN 202110174723 A CN202110174723 A CN 202110174723A CN 112982794 A CN112982794 A CN 112982794A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B7/00—Roofs; Roof construction with regard to insulation
- E04B7/14—Suspended roofs
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Abstract
The invention relates to a prestressed beam resisting wind suction force, which consists of an upper chord roof beam, an arc lower chord stay cable, an arc wind resisting cable, a vertical stay bar, a lower chord horizontal stay bar and a support column, and is characterized in that: the arc-shaped lower chord stay cable is divided into a first arc-shaped lower chord stay cable and a second arc-shaped lower chord stay cable; the first arc-shaped stay cable and the second arc-shaped stay cable are hinged through a lower chord horizontal stay bar; the upper chord roof beam is connected with the horizontal stay bar of the lower chord through the vertical stay bar; the arc wind-resistant cable is connected with the upper chord roof beam and the lower chord horizontal stay bar through the vertical stay bar.
Description
Technical Field
The invention relates to the technical field of structural engineering steel structures, in particular to a prestressed beam for resisting wind suction.
Background
At present, buildings develop towards the direction of diversification and complication of building models and large span of building space, and light large-span structures are widely applied, particularly in the building fields of gymnasiums, large exhibition halls, airport terminal buildings, railway stations and the like. However, the light large-span structure has the characteristics of large span, light weight, flexible structure and the like, and the wind load type coefficient of the large-span roof is a negative value, so that when the wind load is too large and the suction force exceeds the vertical downward load, the lower-chord prestressed stay cable can be withdrawn from the work, the overall rigidity of the large-span structure is suddenly reduced, and the structure is easily damaged. How to ensure that a large-span light roof structure normally works under the action of a large wind load, delay the looseness of a lower chord cable, improve the rigidity of the structure for resisting upward deformation, increase the ductility and the stability and improve the safety storage is a problem to be solved in engineering.
Disclosure of Invention
The roof of the large-span structure is usually a light roof, the roof is light in weight, when wind load is large, due to the fact that the gradient of the large-span roof structure is small, wind suction force on the roof is large, downward static load on the roof is easily offset by the large wind suction force, the large-span structure bears the upward load, and therefore the lower chord is pressed, the lower chord is prone to loosening and withdrawing from work, finally structural rigidity is suddenly reduced, the lower chord is a key factor influencing the stress performance of the large-span structure, when the lower chord withdraws from work, displacement of the structure can be rapidly increased, meanwhile, axial force of the upper chord can also be rapidly increased, the bearing force is extremely adverse, and finally the whole structure fails. The invention provides a large-span prestressed girder capable of resisting wind suction, which not only effectively improves the wind resistance of a large-span roof girder and delays the wind suction load, but also effectively reduces the sag of a lower chord cable, increases the indoor space and perfectly keeps the self-balancing and light characteristics of the large-span prestressed girder.
The utility model provides a resist wind suction's prestressed beam comprises last quarter roof beam, arc last quarter cable, arc anti-wind cable, vertical stay, last quarter horizontal stay and support post, its characterized in that: the arc-shaped lower chord stay cable is divided into a first arc-shaped lower chord stay cable and a second arc-shaped lower chord stay cable; the first arc-shaped stay cable and the second arc-shaped stay cable are hinged through a lower chord horizontal stay bar; the upper chord roof beam is connected with the horizontal stay bar of the lower chord through the vertical stay bar; the arc wind-resistant cable is connected with the upper chord roof beam and the lower chord horizontal stay bar through the vertical stay bar.
Under the normal use state, the upper chord roof beam bears the pressure and the shear force, the arc lower chord stay cable bears the tension force, the arc wind-resistant cable bears the wind suction force, the vertical stay bar bears the pressure, the lower chord horizontal stay bears the pressure, and the support column bears the pressure, the bending moment and the shear force.
Further, the end part of the upper chord roof girder is connected with the upper end of the support pillar by rigid connection; the end parts of the first arc-shaped inhaul cable and the second arc-shaped inhaul cable are hinged with the upper end of the support column, and the end part of the arc-shaped wind resisting cable is hinged with the lower end of the support column; the middle part of the arc wind-resistant cable is hinged with the upper chord roof girder.
Furthermore, the prestressed beam resisting wind suction is connected with the lower structure at the lower end of the support column through 2 supports, and the supports are universal hinged supports.
Furthermore, the ends of the first arc-shaped lower chord stay and the second arc-shaped lower chord stay are connected with the truss through cast steel nodes, and cable heads of the first arc-shaped lower chord stay and the second arc-shaped lower chord stay are anchored to the ends of the cast steel nodes.
Furthermore, the prestressed beam resisting wind suction force is connected with the lower concrete structure through 2 support columns, one end of each support column adopts a sliding universal hinged support, and the other end of each support column adopts a fixed universal hinged support.
The end parts of the first arc-shaped inhaul cable and the second arc-shaped inhaul cable are connected with a gusset plate at the upper end of the support column through an ear plate and a pin shaft, the ear plate is connected with the inhaul cable through a cable head, and the gusset plate and the support column are welded in an insertion mode.
Further, the cross section of the upper chord roof girder is a rectangular steel pipe cross section, and the arc-shaped lower chord stay cable is a high-vanadium coating stay cable; the arc-shaped wind resisting cable is a high-vanadium coating inhaul cable; the vertical support adopts a circular steel tube section; the horizontal support adopts a circular steel tube cross section, and the support column adopts a square steel tube cross section.
Furthermore, the prestressed beam capable of resisting wind suction can be directly exposed as a skeleton of a large-span light steel roof, so that the structure is simply and directly shown, a powerful life feeling is given to the building space, meanwhile, the prestressed beam participates in the building form formation by a structural means, the building form is reasonable and rich in decoration, the structural aesthetic feeling and the strength feeling are directly reflected, and the internal space of the large-span building has the characteristics of powerful rigidity, flexibility and lightness.
Furthermore, the prestressed beam for resisting wind suction has the advantages that the structural frame is clear, the structure of the prestressed beam perfectly represents the simple and simple structure of the space, the internal space of the prestressed beam becomes an exquisite handicraft, the roof structure is transparent and light, the requirements of the spaciousness and the personalized large space of a large-span building are perfectly met, and the integration of mechanics, mathematics, geometric shapes and aesthetics is realized through the structural design.
Advantageous effects
(1) Under the normal use state, the upper chord roof beam bears the pressure and the shear force, the arc lower chord stay cable bears the tension force, the arc wind-resistant cable bears the wind suction force, the vertical stay bar bears the pressure, the lower chord horizontal stay bears the pressure, and the support column bears the pressure, the bending moment and the shear force. The stress characteristics and advantages of the steel beam and the stay cable are fully exerted, the wind resistance of the large-span roof beam is effectively improved, the wind absorption load is delayed, the lower chord cable is loosened, the influence on the integral rigidity of the large-span roof structure after the lower chord cable is loosened is delayed, meanwhile, the sag of the lower chord cable is effectively reduced, the indoor space is increased, the self-balancing and light characteristics of the large-span prestressed beam are perfectly reserved, the structural section is effectively reduced, and the cost is reduced.
(2) The prestressed beam for resisting wind suction force not only meets the requirement of building appearance, but also improves the safety and reliability of the whole structure.
(3) The prestressed beam capable of resisting wind suction can be used as a skeleton of a large-span light steel roof to directly leak outwards, so that the structure is simply and directly expressed, and a building space is endowed with powerful life feeling.
(4) The prestressed beam capable of resisting wind suction force can directly participate in the construction of a building form, so that the building form is reasonable and rich in decoration, the structural aesthetic feeling and the strength sense are directly embodied, and the internal space of a large-span building has the characteristics of strong rigidity, flexibility and lightness.
(5) And a standard construction form is provided, so that the use of engineering technicians is facilitated.
Drawings
The invention can be further illustrated by the non-limiting embodiments presented in the figures of the accompanying drawings:
FIG. 1 is an overall three-dimensional view of a prestressed beam against wind suction according to the present invention;
FIG. 2 is a front view of a prestressed beam against wind suction according to the present invention;
fig. 3 is a top view of the prestressed girder according to the present invention against wind suction.
Reference numerals: 1 prestressed beams resisting wind suction force; 2, winding the roof girder; 3, an arc-shaped lower chord stay cable; 31 a first arcuate lower chord cable; 32 second arc lower chord guy cables; 4, an arc wind-resistant cable; 5, vertical support rods; 6 lower chord horizontal stay bar; 7 support post.
Detailed Description
In order that those skilled in the art may better understand the present invention, the following detailed description of the invention is provided in conjunction with the accompanying drawings.
Detailed description of the preferred embodiment 1
The prestressed beam for resisting wind suction force is composed of an upper chord roof beam, an arc lower chord stay cable, an arc wind resisting cable, a vertical stay bar, a lower chord horizontal stay bar and a support column. The arc-shaped lower chord stay cable is divided into a first arc-shaped lower chord stay cable and a second arc-shaped lower chord stay cable; the first arc-shaped stay cable and the second arc-shaped stay cable are hinged through a lower chord horizontal stay bar; the upper chord roof girder is connected with the horizontal stay bar of the lower chord through the vertical stay bar; the arc wind-resistant cable is connected with the upper chord roof beam and the lower chord horizontal stay bar through the vertical stay bar; the end part of the upper chord roof girder is connected with the upper end of the support pillar by rigid connection; the end parts of the first arc-shaped inhaul cable and the second arc-shaped inhaul cable are hinged with the upper end of the support column, and the end part of the arc-shaped wind resisting cable is hinged with the lower end of the support column; the middle part of the arc wind-resistant cable is hinged with the upper chord roof girder. Under the normal use state, the upper chord roof beam bears the pressure and the shear force, the arc lower chord stay cable bears the tension force, the arc wind-resistant cable bears the wind suction force, the vertical stay bar bears the pressure, the lower chord horizontal stay bears the pressure, and the support column bears the pressure, the bending moment and the shear force.
Furthermore, the prestressed beam resisting wind suction force is connected with the lower concrete structure through 2 supports, and the supports adopt universal hinged supports.
Furthermore, the ends of the first arc-shaped lower chord stay and the second arc-shaped lower chord stay are connected with the truss through cast steel nodes, and cable heads of the first arc-shaped lower chord stay and the second arc-shaped lower chord stay are anchored to the ends of the cast steel nodes.
Further, the cross section of the upper chord roof girder is a rectangular steel pipe cross section, and the arc-shaped lower chord stay cable is a high-vanadium coating stay cable; the arc-shaped wind resisting cable is a high-vanadium coating inhaul cable; the vertical support adopts a circular steel tube section; the horizontal support adopts a circular steel tube cross section, and the support column adopts a square steel tube cross section.
Detailed description of the preferred embodiment 2
The prestressed beam for resisting wind suction force is composed of an upper chord roof beam, an arc lower chord stay cable, an arc wind resisting cable, a vertical stay bar, a lower chord horizontal stay bar and a support column. The arc-shaped lower chord stay cable is divided into a first arc-shaped lower chord stay cable and a second arc-shaped lower chord stay cable; the first arc-shaped stay cable and the second arc-shaped stay cable are hinged through a lower chord horizontal stay bar; the upper chord roof girder is connected with the horizontal stay bar of the lower chord through the vertical stay bar; the arc wind-resistant cable is connected with the upper chord roof beam and the lower chord horizontal stay bar through the vertical stay bar; the end part of the upper chord roof girder is connected with the upper end of the support pillar by rigid connection; the end parts of the first arc-shaped inhaul cable and the second arc-shaped inhaul cable are hinged with the upper end of the support column, and the end part of the arc-shaped wind resisting cable is hinged with the lower end of the support column; the middle part of the arc wind-resistant cable is hinged with the upper chord roof girder. Under the normal use state, the upper chord roof beam bears the pressure and the shear force, the arc lower chord stay cable bears the tension force, the arc wind-resistant cable bears the wind suction force, the vertical stay bar bears the pressure, the lower chord horizontal stay bears the pressure, and the support column bears the pressure, the bending moment and the shear force.
Furthermore, the prestressed beam resisting wind suction force is connected with the lower concrete structure through 2 supports, one end of each support column adopts a sliding universal hinged support, and the other end of each support column adopts a fixed universal hinged support.
Furthermore, the end parts of the first arc-shaped inhaul cable and the second arc-shaped inhaul cable are connected with a gusset plate at the upper end of the support column through an ear plate and a pin shaft, the ear plate is connected with the inhaul cable through a cable head, and the gusset plate and the support column are welded in an insertion mode.
Claims (10)
1. The utility model provides a resist wind suction's prestressed beam comprises last quarter roof beam, arc last quarter cable, arc anti-wind cable, vertical stay, last quarter horizontal stay and support post, its characterized in that: the arc-shaped lower chord stay cable is divided into a first arc-shaped lower chord stay cable and a second arc-shaped lower chord stay cable; the first arc-shaped stay cable and the second arc-shaped stay cable are hinged through a lower chord horizontal stay bar; the upper chord roof beam is connected with the horizontal stay bar of the lower chord through the vertical stay bar; the arc wind-resistant cable is connected with the upper chord roof beam and the lower chord horizontal stay bar through the vertical stay bar.
2. The prestressed girder against wind suction force according to claim 1, wherein: the end part of the upper chord roof girder is connected with the upper end of the support pillar by rigid connection.
3. The prestressed girder against wind suction force according to claim 1, wherein: the end parts of the first arc-shaped inhaul cable and the second arc-shaped inhaul cable are hinged to the upper end of the support column, and the end part of the arc-shaped wind resisting cable is hinged to the lower end of the support column.
4. The prestressed girder against wind suction force according to claim 1, wherein: the middle part of the arc wind-resistant cable is hinged with the upper chord roof girder.
5. The prestressed girder against wind suction force according to claim 1, wherein: the lower end of the support column is connected with the lower structure through 2 supports, and the supports adopt universal hinged supports.
6. The prestressed girder against wind suction force according to claim 1, wherein: the upper chord roof girder is a rectangular steel pipe section, and the arc-shaped lower chord stay cable is a high-vanadium coating stay cable.
7. The prestressed girder against wind suction force according to claim 1, wherein: the arc-shaped wind resisting cable is a high-vanadium coating inhaul cable; the horizontal support adopts a circular steel tube section.
8. The prestressed girder against wind suction force according to claim 1, wherein: the ends of the first arc-shaped lower chord stay cable and the second arc-shaped lower chord stay cable are connected with the truss through cast steel nodes, and cable heads of the first arc-shaped lower chord stay cable and the second arc-shaped lower chord stay cable are anchored to the ends of the cast steel nodes.
9. The prestressed girder against wind suction force according to claim 1, wherein: (ii) a The vertical support adopts a circular steel tube section; the support column adopts a square steel tube section.
10. The prestressed girder according to claim 1 to 4, wherein: the prestressed beam is connected with a lower concrete structure through 2 support columns, one end of each support column adopts a sliding universal hinged support, and the other end of each support column adopts a fixed universal hinged support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110174723.3A CN112982794A (en) | 2021-02-08 | 2021-02-08 | Prestressed beam resisting wind suction force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110174723.3A CN112982794A (en) | 2021-02-08 | 2021-02-08 | Prestressed beam resisting wind suction force |
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| Publication Number | Publication Date |
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| CN112982794A true CN112982794A (en) | 2021-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110174723.3A Pending CN112982794A (en) | 2021-02-08 | 2021-02-08 | Prestressed beam resisting wind suction force |
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| CN (1) | CN112982794A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114250907A (en) * | 2021-12-29 | 2022-03-29 | 中建科工集团有限公司 | Beam string structure |
| CN116842624A (en) * | 2023-09-01 | 2023-10-03 | 北京城建集团有限责任公司 | Method for controlling and simulating vertical force of steel roof and support tower under wind suction effect |
Citations (7)
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| GB101582A (en) * | 1916-03-21 | 1916-10-05 | Ferdinand Joseph Arnodin | Improvements in and relating to Roof Structures. |
| CN1821519A (en) * | 2005-12-22 | 2006-08-23 | 高维成 | Tension string beam structure with dog bone type damper |
| CN103225366A (en) * | 2013-05-24 | 2013-07-31 | 江苏南通六建建设集团有限公司 | Novel balanced beam string |
| CN104060759A (en) * | 2014-06-11 | 2014-09-24 | 江苏科技大学 | Truss string structure internally provided with inclined guy ropes |
| CN204662661U (en) * | 2015-05-05 | 2015-09-23 | 广东省建筑工程集团有限公司 | The two rope truss string structure system of the two case beam of large span |
| CN210007646U (en) * | 2019-07-03 | 2020-01-31 | 中国电建集团华东勘测设计研究院有限公司 | wind-resistant stable large-span photovoltaic supporting structure |
| CN111636623A (en) * | 2020-07-07 | 2020-09-08 | 长沙理工大学 | Beam string structure with high continuous collapse resistance and implementation method thereof |
-
2021
- 2021-02-08 CN CN202110174723.3A patent/CN112982794A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB101582A (en) * | 1916-03-21 | 1916-10-05 | Ferdinand Joseph Arnodin | Improvements in and relating to Roof Structures. |
| CN1821519A (en) * | 2005-12-22 | 2006-08-23 | 高维成 | Tension string beam structure with dog bone type damper |
| CN103225366A (en) * | 2013-05-24 | 2013-07-31 | 江苏南通六建建设集团有限公司 | Novel balanced beam string |
| CN104060759A (en) * | 2014-06-11 | 2014-09-24 | 江苏科技大学 | Truss string structure internally provided with inclined guy ropes |
| CN204662661U (en) * | 2015-05-05 | 2015-09-23 | 广东省建筑工程集团有限公司 | The two rope truss string structure system of the two case beam of large span |
| CN210007646U (en) * | 2019-07-03 | 2020-01-31 | 中国电建集团华东勘测设计研究院有限公司 | wind-resistant stable large-span photovoltaic supporting structure |
| CN111636623A (en) * | 2020-07-07 | 2020-09-08 | 长沙理工大学 | Beam string structure with high continuous collapse resistance and implementation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114250907A (en) * | 2021-12-29 | 2022-03-29 | 中建科工集团有限公司 | Beam string structure |
| CN114250907B (en) * | 2021-12-29 | 2023-08-15 | 中建科工集团有限公司 | Beam string structure |
| CN116842624A (en) * | 2023-09-01 | 2023-10-03 | 北京城建集团有限责任公司 | Method for controlling and simulating vertical force of steel roof and support tower under wind suction effect |
| CN116842624B (en) * | 2023-09-01 | 2023-11-14 | 北京城建集团有限责任公司 | Method for controlling and simulating vertical force of steel roof and support tower under wind suction effect |
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Application publication date: 20210618 |