CN212248686U - Large-span prestressed arch roof structure - Google Patents
Large-span prestressed arch roof structure Download PDFInfo
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- CN212248686U CN212248686U CN202020211955.2U CN202020211955U CN212248686U CN 212248686 U CN212248686 U CN 212248686U CN 202020211955 U CN202020211955 U CN 202020211955U CN 212248686 U CN212248686 U CN 212248686U
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Abstract
The utility model provides a large-span prestressing force arch roof structure has many arch ribs with the axle center is evenly arranged, and the arch rib top is connected with top even tie beam, and the arch rib centre is connected with the multichannel middle even tie beam, and the arch rib bottom is connected with the hunch foot, and many arch ribs, top even tie beam, the multichannel middle tie beam, a plurality of hunch feet link together and form the hunch body, large-span prestressing force arch roof structure still sets up annular prestressing force pencil, and annular prestressing force pencil passes the hunch foot and connects into the closed annular; the arch foot is provided with a hole for the prestressed steel strand to pass through, and a gap exists between the hole and the prestressed steel strand. The utility model has the advantages of material saving, light structure, clear stress, low cost, large span and convenient construction. A new structural form is provided for the circular roof with the span of more than 150m, and the roof with the super-large span can be popularized and applied.
Description
Technical Field
The utility model relates to a large-span prestressing force arch roof structure is the structure of utilizing the balanced roof arch rib thrust of prestressing force, can be arranged in large-span, the circular roof of especially big span.
Background
The large span space structure, as the fastest growing building structure type in the world today, represents an overall level of national building technology. The important characteristic of the long-span structure, which is distinguished from the traditional structure, is that the span is very large, some span even reach hundreds of meters, and at this time, in order to meet the requirements, the structure is required to have a space system with better stress performance and more reasonable performance. In the prior art, common large-span roofs are generally classified into the following categories:
the planar net rack and the planar trusses form a stereo cross truss system through a certain angle. Spatial structure belongs to the hyperstatic space structure of high order, and the inside member bar of component is arranged law, numerous, and every member bar all receives the supporting role of a plurality of directions. The structure has the advantages that the axis is stressed, the characteristics of the components can be exerted, and the installation is convenient; the defects are that the rod pieces are various, the steel consumption of the node is large, the eccentric error exists in the production process, the processing and manufacturing cost is high, and the like.
The three-dimensional pipe truss and pipe truss structure is a lattice three-dimensional truss structure formed by connecting rod pieces such as circular pipe chords, web members and the like. The structure has the advantages of clear stress, light and attractive appearance, simple component manufacturing and the like; the defects are that the production and the processing of the rod piece are more complicated and the residual stress of the construction is larger; high precision requirement, high structure height in large span, and the like.
The prestressed tensioning structure is a composite structure and is connected by stay bars, a slender prestressed cable is used as a chord to tension an upper beam, the stay bars are arranged under an upper rigid structure of the tensioning structure, and the stay bars with high prestress are connected to realize the directional loading of the rigid structure, so that the structural rigidity is increased, the overall stability is improved, and the characteristics of materials can be fully exerted; the disadvantages are that the requirement of the vertical span ratio leads to the increase of the total height of the structure, the stability problem of the stay bar is more prominent, and the transmission and distribution of force are not reasonable due to the large rigidity of the upper chord.
The large-span roofs basically need a truss or a beam body with high rigidity as a main stress structure, and are stressed in a single direction, and the span is within 150 m.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: aiming at the large-span roof structure, the roof structure which is specially used for the circular roof, has the advantages of super large span, definite stress, simplicity, reliability, economy and reasonability is provided.
The utility model adopts the technical proposal that: the large-span prestressed arched roof structure is characterized by comprising a plurality of arch ribs which are coaxially and uniformly arranged, wherein the tops of the arch ribs are connected with a top connecting beam, the middles of the arch ribs are connected with a plurality of middle connecting beams, the bottom ends of the arch ribs are connected with arch feet, the plurality of arch ribs, the top connecting beam, the plurality of middle connecting beams and the plurality of arch feet are connected together to form an arch body, the large-span prestressed arched roof structure is further provided with an annular prestressed steel beam, and the annular prestressed steel beam penetrates through the arch feet and is connected into a closed ring shape;
the arch foot is provided with a hole for the prestressed steel strand to pass through, and a gap exists between the hole and the prestressed steel strand.
In the utility model, the connecting beam is divided into a top connecting beam and a middle connecting beam. The top connecting beam is arranged on the arch top and plays a role in drawing in arch ribs and balancing arch rib forces of the arch top. The middle connecting beam is arranged in the middle of the arch rib to play a role in connecting the arch rib and improving the stability of the arch rib. The arch body balances the thrust of the arch rib through the annular prestress anchored on the arch springing to form a stable large-span structure.
Further, the arch springing comprises a pass-through arch springing and an anchored arch springing; the through type arch foot is provided with a hole for the prestressed steel beam to pass through; the anchoring type arch foot is provided with two holes for the penetration of the prestressed steel beams and the cross anchoring of the prestressed steel beams.
The utility model has the advantages that: the characteristic of high bearing capacity of the arch structure is utilized, the thrust of the arch is balanced by the annular prestressed steel beams arranged on the arch springing, and a self-balancing large-span annular roof structure is formed. The material consumption of the large-span circular roof is greatly reduced, the large-span roof is light, and the span of the circular roof is increased. Has the advantages of material saving, light structure, clear stress, low cost, large span and convenient construction. A new structural form is provided for the circular roof with the span of more than 150m, and the roof with the super-large span can be popularized and applied.
Drawings
Fig. 1 is a plan view of a roof according to an embodiment of the present invention.
Fig. 2 is an elevation view of a roof according to an embodiment of the present invention.
Fig. 3 is a sectional view of the roof according to the embodiment of the present invention.
Fig. 4 is a schematic view of the plane force of the arch springing according to the embodiment of the present invention.
Detailed Description
As shown in figures 1-4, the utility model relates to a novel large-span prestressing force arch roof, have many ribs 1 with the even arrangement of axle center, the rib top is connected with top even tie beam 2-1, is connected with the middle tie beam 2-2 of multichannel in the middle of rib 1, and rib 1 bottom is connected with the hunch foot, and many ribs 1, tie beam 2-1 and 2-2, a plurality of hunch feet form the arch body together. The annular prestressed steel beams 3 penetrate through the arch springing and are connected into a closed ring shape.
The plurality of arch springing feet are arranged on the same circumference.
The intermediate tie beam 2-2 may be a whole ring beam or may be divided into several sections, which are connected to the arch rib 1 by welding or bolts.
For the arch springing, the top of the arch springing is connected with the bottom end of the arch rib 1 through welding or bolts, a hole for the prestressed steel beam 3 to pass through is arranged in the middle of the arch springing, and a gap is reserved between the hole and the prestressed steel beam 3 for certain radial displacement.
The arch springing can be divided into a passing arch springing 4-1 and an anchoring arch springing 4-2, the arch springing 4-1 is provided with a hole for the prestressed steel beam 3, and the anchoring arch springing 4-2 is provided with two holes for the prestressed steel beam 3 to pass through, so that the prestressed steel beam 3 is cross-anchored on the anchoring arch springing 4-2.
The utility model discloses an anchor is in the balanced arch rib thrust of annular prestressing force 3 of hunch foot (the arch foot plane atress is shown schematically in figure 4), and many hunch ribs 1, top even tie beam 2-1 and the multichannel middle even tie beam 2-2, annular prestressing steel bundle 3, a plurality of hunch feet constitute the stable arch structure of striding of self-balancing jointly.
The lower part of the structure is provided with a support 5, and the support 5 is placed on a vertical support column 6 so as to transmit vertical load and adapt to the horizontal displacement of the large-span arched roof structure.
The utility model discloses an arch rib 1, even tie beam 2, arch springing can adopt steel construction or steel-concrete structure as required.
The annular pre-stressed steel bundle 3 may be a finished high-strength steel wire with an anchoring end.
The top connecting beam 2-1 is arranged in a ring shape on the plane and is fixedly connected with the top of the arch rib 1.
The middle connecting beam 2-2 is arranged annularly on the plane, is arranged at intervals along the height in the middle of the arch rib 1, can be provided with a plurality of channels according to the requirement and is fixedly connected with the arch rib 1.
The above only is the concrete embodiment of the utility model, the technical features of the utility model are not limited thereto, and any person skilled in the relevant field is in the field of the utility model, and the changes or modifications are all covered in the protection scope of the utility model.
Claims (3)
1. The large-span prestressed arch roof structure is characterized by comprising a plurality of arch ribs which are coaxially and uniformly arranged, wherein the tops of the arch ribs are connected with a top connecting beam, the middles of the arch ribs are connected with a plurality of middle connecting beams, the bottom ends of the arch ribs are connected with arch feet, and the plurality of arch ribs, the top connecting beam, the plurality of middle connecting beams and the plurality of arch feet are connected together to form an arch body; the large-span prestressed arched roof structure is also provided with an annular prestressed steel beam which penetrates through the arch springing and is connected into a closed ring;
the arch foot is provided with a hole for the prestressed steel strand to pass through, and a gap exists between the hole and the prestressed steel strand.
2. The large-span prestressed arched roof structure of claim 1, wherein the arches include pass-through arches and anchored arches; the through type arch foot is provided with a hole for the prestressed steel beam to pass through; the anchoring type arch foot is provided with two holes for the penetration of the prestressed steel beams and the cross anchoring of the prestressed steel beams.
3. A large-span prestressed arched roof structure according to claim 1, characterized in that under the arch springing, there is provided a support resting on the vertical support columns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020211955.2U CN212248686U (en) | 2020-02-26 | 2020-02-26 | Large-span prestressed arch roof structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020211955.2U CN212248686U (en) | 2020-02-26 | 2020-02-26 | Large-span prestressed arch roof structure |
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| Publication Number | Publication Date |
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| CN212248686U true CN212248686U (en) | 2020-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020211955.2U Active CN212248686U (en) | 2020-02-26 | 2020-02-26 | Large-span prestressed arch roof structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114016651A (en) * | 2021-10-27 | 2022-02-08 | 广东电网有限责任公司广州供电局 | 3D prints concrete arch roof |
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2020
- 2020-02-26 CN CN202020211955.2U patent/CN212248686U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114016651A (en) * | 2021-10-27 | 2022-02-08 | 广东电网有限责任公司广州供电局 | 3D prints concrete arch roof |
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