CN107090943B - Light steel roof system with angle brace as purline fulcrum - Google Patents
Light steel roof system with angle brace as purline fulcrum Download PDFInfo
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- CN107090943B CN107090943B CN201710448138.1A CN201710448138A CN107090943B CN 107090943 B CN107090943 B CN 107090943B CN 201710448138 A CN201710448138 A CN 201710448138A CN 107090943 B CN107090943 B CN 107090943B
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- brace
- purline
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- purlines
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
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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
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Joining Of Building Structures In Genera (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a light steel roof system with a corner brace as a purline fulcrum. The steel beam corner brace comprises a steel beam, purlines, corner braces, purline supports and connecting plates, wherein the purline supports are fixedly connected to the top surfaces of upper flanges of the steel beam, the purline supports are fixedly connected to the middle parts of the purlines, the purlines and the steel beam are arranged vertically, the connecting plates are fixedly connected between two sides of lower flanges of the steel beam and a web plate respectively, the two ends of each purline are connected with the corner braces, and the corner braces are obliquely connected between the purlines and the connecting plates; a brace is connected between every two adjacent purlines; the brace is connected between any position of two adjacent purlines or between two adjacent purlines at the connection position of the corner brace and the purline through brace connecting angle steel. The invention forms a stable space stress system, can reduce the calculation length inside and outside the surface of the purline, is beneficial to the design and the satisfaction of the purline, and improves the space integral stress performance of the roof system; the method can be widely applied to the design of the light steel structure roof consisting of steel beams, purlins, angle braces and braces.
Description
Technical Field
The invention relates to a light steel roof purline system, in particular to a light steel roof system with a corner brace as a purline fulcrum, which can be widely applied to a roof purline system of a light steel factory building.
Background
In a light steel factory building, the whole building consists of a structural system and a containment system. The structural system consists of a portal rigid frame, a vertical surface support and a roof horizontal support system, and a stable frame is formed. The enclosure system consists of a roof system and a wall surface system, and is attached to the structural system to form a complete light steel structure plant which meets the use function.
In the roof enclosure system, the roof enclosure system mainly comprises purlines, angle braces, brace bars and roof panels. The roof board is fixed on the purline by self-tapping screws or fixing seats, the purline is fixed on the portal rigid frame through purline supports, the braces pull the purlines from the roof ridge at certain intervals, and the corner supports connect the lower flange of the portal rigid frame beam with the purline.
The purlines are used for effectively transferring the load of the roof panel to the portal rigid frame and need to have good bending strength, rigidity and stability. The purlines are generally made of Z-shaped or C-shaped cold-formed thin-wall section steel, and the strength, rigidity and stability in the surface are determined by the span of steel beams. Because the off-plane rigidity of purlin is relatively weak, often sets up several braces through the span direction along the purlin, provides the off-plane restraint of purlin, reduces the off-plane calculation length of purlin, guarantees the off-plane stability of purlin.
In practical application, the braces are often arranged in sections, and for convenience in connection and assembly, the axes of two adjacent braces are not in a straight line but are connected to two bolt holes with a certain distance on a purline. The eccentricity of the axial force of two adjacent brace rods generates a bending moment on the local part of the purline, and the purline is easy to form local torsional deformation under the action of the bending moment because the wall thickness of the purline is very thin and the rigidity is very weak. The axial displacement of brace can cause like this, arouses that the brace is lax, can not be fine for the purlin provide the off-plate support rigidity, can not effectual off-plate calculation length who reduces the purlin.
The angle brace is used for connecting the purline and the portal rigid frame cross beam to form a triangular stable structure. The purlines can provide support for the portal rigid frame cross beam through the angle brace, avoid the off-plane unstability of the portal rigid frame cross beam, and reduce the off-plane calculation length of the portal rigid frame cross beam. Meanwhile, the portal rigid frame cross beam can also provide support for the purlines through the corner brace, and the effective calculation length of the purlines is reduced.
In practical application, the connecting part of the purline and the corner brace is not constrained outside a triangular surface formed by the corner brace and the purline, and a brace is not generally arranged at the connecting part, so that the purline is easy to have certain instability displacement outside the surface, the supporting effect of the corner brace on the purline is reduced, the calculated length of the purline is reduced, and an effective effect cannot be achieved.
Based on above technical background, need carry out structural system to angle brace, purlin, gate-type rigid frame crossbeam system and optimize, improve the rigidity of brace and purlin junction to make full use of angle brace, purlin and brace three's atress relation in coordination each other, the wholeness of reinforcing roofing purlin system, performance space atress performance in coordination can save roofing steel volume, has great economic performance.
Disclosure of Invention
In order to overcome the defects of weak local rigidity and loose brace of purlins at the connecting points of the braces in the existing purlin system and the defect of unconfined rigidity outside the connecting points of the angle brace purlins, the invention provides a light steel roof system with the angle brace as a supporting point of the purlins, which comprises the following steps: by improving the method of connecting nodes of the brace, the axial rigidity of the brace is improved, and the looseness of the brace is reduced; the stay is arranged at the joint of the angle brace purlines to limit the out-of-plane displacement of the purlines, so that the lateral rigidity of the purlines is improved, the assumed condition that the angle brace is used as a supporting point of the purlines can be met, a space stress system is formed, and the effective calculation length of the purlines is effectively reduced.
The technical scheme adopted by the invention is as follows:
the steel beam angle brace comprises a steel beam, a purline, angle braces, brace bars, a purline support and a connecting plate, wherein the purline support is fixedly connected to the top surface of an upper flange of the steel beam, the purline support is fixedly connected with the middle part of the purline through a connecting bolt, the purline is vertically arranged with the steel beam, the connecting plate is fixedly connected between two sides of a lower flange of the steel beam and a web plate respectively, the angle braces are connected to two ends of the purline, and the angle braces are connected between the purline and the connecting plate in an inclined bracing manner; and a brace is connected between every two adjacent purlines.
The brace is connected between any position of two adjacent purlines beyond the corner brace and the purline connection position through brace connecting angle steel, and the concrete steps are as follows: a pair of brace connecting angle steels are symmetrically arranged on two side surfaces of the purlin, the brace connecting angle steels on the two sides are fixedly connected to the two side surfaces of the purlin through connecting bolts penetrating through the purlin, one half side of each brace connecting angle steel is tightly attached to the side surface of the purlin, and the other half side of each brace connecting angle steel is fixedly connected with the end part of each brace; the two ends of each brace are connected to the brace connecting angle steel of two adjacent purlins respectively, and the two braces on the two sides of each purlin are arranged on the same horizontal straight line, so that out-of-plane supporting connection between the two adjacent purlins is formed.
The brace passes through brace angle connector and connects between two adjacent purlins that angle brace and purlin are connected the department, specifically is: the end part of the angle brace is processed into an angle steel structure or welded with an angle steel structure, the end part of the angle brace is connected to one side of a purline, brace connecting angle steel which is symmetrically arranged with the angle steel structure at the end part of the angle brace is arranged at the other side of the purline, the end part of the angle brace and the brace connecting angle steel are fixedly connected to two side surfaces of the purline by connecting bolts which penetrate through the purline, one half side of the end part of the angle brace and one half side of the brace connecting angle steel are tightly attached to the side surfaces of the purline, and the other half side of the end part of the angle brace and the other half side of the brace connecting angle steel are respectively and fixedly connected with the end part of the brace; the two ends of the brace are respectively connected to the end portions of the angle braces or the brace connecting angle steel of two adjacent purlins, and the two braces on the two sides of each purlin are arranged on the same horizontal straight line, so that out-of-plane support connection between the two adjacent purlins is formed.
The brace adopt round steel, the tip is buckled to be equipped with the screw thread at the tip of buckling, the tip that the brace was buckled passes the through-hole of brace angle connector another half side after and screws up fixedly with the nut, make the brace be connected to brace angle connector.
The brace adopt the band steel, the tip is opened has the through-hole, the through-hole of brace tip and the through-hole of brace angle connector another half side are screwed up fixedly with the connecting bolt nut for the brace is connected to brace angle connector.
A stiffening rib is connected between one half side and the other half side of the brace connecting angle steel
The purlines are connected with purline supports fixed on the steel beams through connecting bolts.
The upper end of the angle brace is fixedly connected with the end part of the purline through a connecting bolt, and the lower end of the angle brace is fixedly connected with a connecting plate which is positioned on the same side with the end part of the purline through a connecting bolt.
The purlines are of Z-shaped or C-shaped structures.
The invention has the beneficial effects that:
the invention enables the angle brace, the steel beam, the purline and the brace to form a stable space stress system, can reduce the span of the purline, increase the out-of-plane stable bearing capacity of the purline, greatly reduce the section of the purline, save the steel consumption and improve the space integral stress performance of the roof system.
The invention improves the force transmission path of the brace connection, improves the axial tension rigidity of the brace, reduces the looseness of the brace, can effectively improve the out-of-plane constraint of the brace on the purline, exerts the efficiency of the purline and saves the steel consumption of the purline.
The system can be widely applied to the design of the light steel structure roof consisting of steel beams, purlins, angle braces and braces.
Drawings
Fig. 1 is an elevation view of the present invention.
Fig. 2 is a sectional view taken along line a-a of fig. 1.
Fig. 3 is a sectional view taken along line B-B of fig. 1.
Fig. 4 is a C-C sectional view of fig. 1 when the braces are round steel.
Fig. 5 is a cross-sectional view D-D of fig. 1 when the braces are flat steel.
In the figure: 1. a steel beam; 2. a purlin; 3. a corner brace; 4. bracing; 5. a connecting bolt; 6. a purlin support; 7. a connecting plate; 8. the brace is connected with the angle steel; 9. a stiffening rib.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
As shown in fig. 1-2, the concrete implementation of the invention comprises a steel beam 1, a purlin 2, a corner brace 3, a brace 4, a purlin support 6 and a connecting plate 7, wherein the purlin support 6 is fixedly connected to the top surface of the upper flange of the steel beam 1, the purlin support 6 is fixedly connected with the middle part of the purlin 2 through a connecting bolt 5, the purlin 2 is vertically arranged with the steel beam 1, and the connecting plate 7 is fixedly connected between the two sides of the lower flange of the steel beam 1 and a web plate respectively.
As shown in fig. 1, the two ends of the purline 2 are both connected with the angle brace 3, the angle brace 3 is obliquely connected between the purline 2 and the connecting plate 7, the upper end of the angle brace 3 is fixedly connected with the end part of the purline 2 through the connecting bolt 5, and the lower end of the angle brace 3 is fixedly connected with the connecting plate 7 which is positioned on the same side with the end part of the purline 2 through the connecting bolt 5.
As shown in fig. 2, a brace 4 is connected to the purlin 2 near the joint between the corner brace 3 and the purlin 2, and two adjacent purlins 2 are connected by the brace 4.
As shown in fig. 2, the connection mode between the brace 4 and the purlin 2 is specifically as follows: a pair of brace connecting angle steels 8 are symmetrically arranged on two side surfaces of the purlin 2, the brace connecting angle steels 8 on the two sides are fixedly connected to the purlin 2 through connecting bolts 5 penetrating through the purlin 2, one half side of each brace connecting angle steel 8 is tightly attached to the side surface of the purlin 2 and provided with the connecting bolt 5 in a penetrating mode, and the other half side of each brace connecting angle steel 8 is fixedly connected with the end part of each brace 4; the two ends of each brace 4 are respectively connected to the brace connecting angle steel 8 of two adjacent purlins 2, and the two braces 4 on the two sides of each purlin 2 are arranged on the same horizontal straight line, so that the out-of-plane supporting connection between the two adjacent purlins 2 is realized.
As shown in fig. 3, the connection between the angle brace 3 and the purlin 2 can be the connection between the brace 4 and the purlin 2, that is, the end of the angle brace 3 is arranged into a brace connecting angle 8 structure.
There are two embodiments for the connection between the brace 4 and the end of the corner brace 3 or brace connection angle 8:
as shown in fig. 4, the purline 2 is a Z-shaped structure, the brace 4 is made of round steel, the end part of the brace is bent, threads are arranged at the bent end part of the brace, and the bent end part of the brace 4 penetrates through a through hole on the other half side of the brace connecting angle steel 8 and then is screwed and fixed by a nut, so that the brace 4 is connected to the brace connecting angle steel 8.
As shown in fig. 5, the purline 2 is of a Z-shaped structure, the brace 4 is made of flat steel, a through hole is formed in the end of the brace, and the through hole in the end of the brace 4 and the through hole in the other half side of the brace angle connector 8 are screwed and fixed through the connecting bolt 5 nut, so that the brace 4 is connected to the brace angle connector 8.
In the implementation, a stiffening rib 9 for strengthening rigidity is arranged between one half side and the other half side of the re-bracing connecting angle steel 8.
On same root girder steel 1, be provided with the multiunit along girder steel 1 direction and mainly constitute stable triangular supports structure by purlin 2 and angle brace 3, the plane at every triangular supports structure place has formed effective support in the face, and the angle brace can provide effectual support for the purlin in the face, reduces the in-plane calculation length of purlin. However, the supports of the angle braces are not arranged outside the surface, when the purlines are stressed, because the surfaces where the triangular support structures are arranged are not constrained, out-of-surface instability or large displacement is easy to form, the calculation length outside the purline surface cannot be effectively reduced, and the angle braces still do not help the purline design.
The invention is provided with a through long brace at the joint of the corner brace and the purline and forms effective outer bearing force, thus the corner brace, the steel beam, the purline and the brace can form a stable space stress system, the calculation length of the purline inside and outside the surface can be reduced, the design and the satisfaction of the purline are facilitated, and the space integral stress performance of the roof system is improved. The invention improves the force transmission path of the brace connection, improves the axial tension rigidity of the brace, reduces the looseness of the brace, can effectively improve the out-of-plane constraint of the brace on the purline, exerts the efficiency of the purline and saves the steel consumption of the purline.
The embodiments described in this specification are merely illustrative of implementations of the inventive concept and the scope of the present invention should not be considered limited to the specific forms set forth in the embodiments but rather by the equivalents thereof as may occur to those skilled in the art upon consideration of the present inventive concept.
Claims (7)
1. The utility model provides a light steel roofing system that angle brace is as purlin fulcrum which characterized in that: the steel beam angle adjusting device comprises a steel beam (1), purlines (2), angle braces (3), a brace (4), purline supports (6) and connecting plates (7), wherein the purline supports (6) are fixedly connected to the top surfaces of the upper flanges of the steel beam (1), the purline supports (6) are fixedly connected with the middle parts of the purlines (2), the purlines (2) are arranged perpendicular to the steel beam (1), the connecting plates (7) are fixedly connected between the two sides of the lower flanges of the steel beam (1) and webs respectively, the angle braces (3) are connected to the two ends of each purline (2), and the angle braces (3) are obliquely connected between the purlines (2) and the connecting plates (7); a brace (4) is connected between two adjacent purlines (2);
brace (4) are connected between two adjacent purlines (2) of angle brace (3) and purline (2) department of being connected through brace angle connector (8), specifically are: the end part of the angle brace (3) is processed into an angle steel structure or welded with an angle steel structure, the end part of the angle brace (3) is connected to one side of the purline (2), brace connecting angle steel (8) symmetrically arranged with the angle steel structure at the end part of the angle brace (3) is installed on the other side of the purline (2), the end part of the angle brace (3) and the brace connecting angle steel (8) are fixedly connected to the two side surfaces of the purline (2) through connecting bolts (5) penetrating through the purline (2), the end part of the angle brace (3) and one half side of the brace connecting angle steel (8) are tightly attached to the side surface of the purline (2), and the end part of the angle brace (3) and the other half side of the brace connecting angle steel (8) are fixedly connected with the end part of the brace (4) respectively; the two ends of each brace (4) are respectively connected to the ends of the angle braces (3) or the brace connecting angle steel (8) of two adjacent purlines (2), and the two braces (4) on the two sides of each purline (2) are arranged on the same horizontal straight line, so that out-of-plane supporting connection between the two adjacent purlines (2) is formed.
2. A light steel roofing system with a corner brace as a purlin anchor according to claim 1, wherein: the brace (4) is connected between any position of two adjacent purlines (2) except the connecting position of the corner brace (3) and the purline (2) through brace connecting angle steel (8), and the concrete steps are as follows: a pair of brace connecting angle steels (8) are symmetrically arranged on two side surfaces of the purline (2), the brace connecting angle steels (8) on the two sides are fixedly connected to the two side surfaces of the purline (2) through connecting bolts (5) penetrating through the purline (2), one half side of each brace connecting angle steel (8) is tightly attached to the side surface of the purline (2), and the other half side of each brace connecting angle steel (8) is fixedly connected with the end part of each brace (4); brace (4) both ends are connected to on brace angle connector (8) of two adjacent purlins (2) respectively to two braces (4) of purlin (2) both sides are arranged on same horizontal straight line, thereby have formed the off-plane support connection between two adjacent purlins (2).
3. A light steel roofing system with corner brace as purlin anchor according to claim 1 or 2, wherein: brace (4) tip buckle to be equipped with the screw thread at the tip of buckling, the tip that brace (4) was buckled passes behind the through-hole of brace angle connector (8) the other half side and screws up fixedly with the nut, makes brace (4) be connected to brace angle connector (8).
4. A light steel roofing system with corner brace as purlin anchor according to claim 1 or 2, wherein: the end part of the brace (4) is provided with a through hole, the through hole at the end part of the brace (4) and the through hole at the other half side of the brace connecting angle steel (8) are screwed and fixed by a connecting bolt (5) nut, so that the brace (4) is connected to the brace connecting angle steel (8).
5. A light steel roofing system with a corner brace as a purlin fulcrum as claimed in claim 1 or 2 wherein: and a stiffening rib (9) is connected between one half side and the other half side of the brace connecting angle steel (8).
6. A light steel roofing system with a corner brace as a purlin anchor according to claim 1, wherein: the purline (2) is connected with a purline support (6) fixed on the steel beam (1) through a connecting bolt (5).
7. A light steel roofing system with a corner brace as a purlin anchor according to claim 1, wherein: the upper end of the angle brace (3) is fixedly connected with the end part of the purline (2) through a connecting bolt (5), and the lower end of the angle brace (3) is fixedly connected with a connecting plate (7) which is positioned on the same side with the end part of the purline (2) through the connecting bolt (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710448138.1A CN107090943B (en) | 2017-06-14 | 2017-06-14 | Light steel roof system with angle brace as purline fulcrum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710448138.1A CN107090943B (en) | 2017-06-14 | 2017-06-14 | Light steel roof system with angle brace as purline fulcrum |
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| Publication Number | Publication Date |
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| CN107090943A CN107090943A (en) | 2017-08-25 |
| CN107090943B true CN107090943B (en) | 2022-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710448138.1A Active CN107090943B (en) | 2017-06-14 | 2017-06-14 | Light steel roof system with angle brace as purline fulcrum |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110528694B (en) * | 2019-08-23 | 2024-07-23 | 中衡设计集团股份有限公司 | Rigid joint of roof steel girder and bracket girder |
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