Continuous reinforcing structure of existing simply supported C-shaped purline

Abstract

The utility model discloses a continuous reinforcing structure of an existing simply supported C-shaped purline, which belongs to the technical field of steel structure roof photovoltaic power generation and is mainly used for connecting adjacent simply supported C-shaped purlines in a roof photovoltaic support. The continuous reinforcing structure of the existing simply-supported C-shaped purline comprises the existing simply-supported C-shaped purline, a supporting steel beam, a T-shaped gusset plate and a purline reinforcing piece, the purline reinforcing piece is in a C shape, and an opening of the purline reinforcing piece is opposite to an opening of the existing simply-supported C-shaped purline. The purline reinforcer covers the outer side of the existing simply-supported C-shaped purline and forms a rectangular section with the existing simply-supported C-shaped purline; the purline reinforcer is connected with the upper flange and the lower flange of the existing simply-supported C-shaped purline through a first self-tapping screw and a second self-tapping screw; the existing simply-supported C-shaped purlines arranged on the two sides of the supporting steel beam are in butt joint through the purline reinforcing pieces, continuous reinforcement of the existing simply-supported C-shaped purlines is achieved, the lateral force resistance, the torsion resistance and the overall stability of the structure are improved, and external loads are effectively resisted.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel structure roof photovoltaic power generation technical field especially a continuous reinforcement structure for existing simply supported C-shaped purline of roof photovoltaic support construction. BACKGROUND

[0002] With the vigorous promotion of the country to new energy business, in order to increase the investment in new energy construction and make full use of existing resources, more and more solar photovoltaic power station is built on the existing steel structure factory roof. In the building roof structure, simply supported purline structure is widely used because of its simple structure and quick installation. Generally, the existing single-span simply supported purline can meet the bearing and use conditions, but when new roof load needs to be borne, such as adding photovoltaic panel on the roof, since the simply supported purline is an independent support structure, it is connected and installed by only using support steel beam and T-shaped joint plate, the stress distribution is relatively concentrated, the deformation and deflection of single-span simply supported purline will further increase under the action of comprehensive load, and often exceed the design allowable range, causing serious structure deformation and local instability. The bearing capacity of single-span simply supported purline is limited when coping with dynamic load (such as wind load, vibration, etc.), and long-term fatigue damage will occur after long-term coping with dynamic load, affecting the safety and service life of the roof. CONTENT OF THE UTILITY MODEL

[0003] The utility model provides a continuous reinforcement structure of existing simply supported C-shaped purline, which is mainly used for connecting adjacent simply supported C-shaped purlines in the roof photovoltaic support, so as to make the existing simply supported C-shaped purline continuous and improve the bearing capacity of the existing purline, thereby ensuring the safety of the roof photovoltaic support.

[0004] The utility model discloses a continuous reinforcement structure of existing simply supported C-shaped purline, which comprises an existing simply supported C-shaped purline and a support steel beam, a T-shaped joint plate is arranged on the support steel beam, and two adjacent existing simply supported C-shaped purlines are arranged on the support steel beam through the T-shaped joint plate; a purline reinforcing piece for connecting the two adjacent existing simply supported C-shaped purlines is further arranged, the two ends of the purline reinforcing piece are connected with the two adjacent existing simply supported C-shaped purlines respectively, the cross section of the purline reinforcing piece is C-shaped, the opening of the purline reinforcing piece is arranged opposite to the opening of the existing simply supported C-shaped purline, the purline reinforcing piece is arranged on the outer side of the existing simply supported C-shaped purline in a cladding mode, and the purline reinforcing piece and the existing simply supported C-shaped purline form a frame structure with a rectangular cross section, first self-tapping screws are arranged on the upper flange of the purline reinforcing piece in an interval mode and sequentially penetrate the upper flange of the purline reinforcing piece and the upper flange of the existing simply supported C-shaped purline, and second self-tapping screws are arranged on the lower flange of the purline reinforcing piece in an interval mode and sequentially penetrate the lower flange of the purline reinforcing piece and the lower flange of the existing simply supported C-shaped purline.

[0005] Further, two ends of the purlin reinforcement are respectively provided with a connecting piece for connecting with the web plate of the existing simple C-shaped purlin, the connecting piece comprises a connecting stud which penetrates the web plate of the purlin reinforcement, the web plate of the existing simple C-shaped purlin and a T-shaped joint plate in sequence and is fixedly connected with the T-shaped joint plate, and one end of the connecting stud penetrating the T-shaped joint plate is provided with a connecting nut which is threadedly connected with the connecting stud.

[0006] As a preferred mode, the plurality of connecting studs are uniformly arranged on the web plate of the purlin reinforcement.

[0007] As a preferred mode, the connecting piece further comprises a center positioning stud which penetrates the web plate of the purlin reinforcement, the web plate of the existing simple C-shaped purlin and the T-shaped joint plate in sequence and is fixedly connected with the T-shaped joint plate, and the center positioning stud is arranged on the center line of the existing simple C-shaped purlin and between the connecting stud and the symmetry axis of the purlin reinforcement.

[0008] Further, the symmetry axis of the purlin reinforcement is located on the same straight line as the symmetry axis of the supporting steel beam.

[0009] Further, the length of the purlin reinforcement is 1 / 4-1 / 3 of the length of the existing simple C-shaped purlin.

[0010] Further, the upper side of the first self-tapping screw is provided with a waterproof rubber pad which is matched with the first self-tapping screw.

[0011] Further, the distance between adjacent first self-tapping screws is 250mm, and the distance between adjacent second self-tapping screws is 125mm.

[0012] The utility model discloses a beneficial effect is: this simple -supported C -purlin continuous reinforcement structure utilizes purlin reinforcing part to carry out butt joint to the simple -supported C -purlin of existing both sides of support steel beam both sides of being arranged in midspan support point, installs purlin reinforcing part along the opening direction of simple -supported C -purlin of existing, to form a closed section, along the length direction of purlin reinforcing part, the second self -tapping screw is nailed in the lower flange of simple -supported C -purlin of existing and purlin reinforcing part, the first self -tapping screw is nailed in the upper flange of sandwich board roof upper side and simple -supported C -purlin, purlin reinforcing part of existing, realizes the continuous reinforcement to simple -supported C -purlin of existing, the integrality of structure is increased to simple -supported C -purlin of existing continuous setting, improves the stability of structure whole, changes the original opening section into closed section, can improve the lateral force and the torsional capacity of purlin system significantly, effectively resists the effect of external load (such as wind load, snow load etc.), changes the stress of structure, makes simple -supported C -purlin of existing stress distribution more evenly, reduces the possibility of structure displacement or damage, can better bear additional load, and the size of above-mentioned purlin reinforcing part needs to be customized according to the size and span of simple -supported C -purlin of existing, is suitable for different specifications and sizes simple -supported C -purlin of existing, has good universality and adaptability. Meanwhile, by adjusting the size and shape of purlin reinforcing part, different design requirements and load conditions can be flexibly met. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The utility model provides a simple -supported C -purlin continuous reinforcement structure whole schematic view;

[0014] Figure 2 The utility model provides a simple -supported C -purlin continuous reinforcement structure whole schematic view;

[0015] Fig. 1 - support steel beam;11 - the symmetry axis of support steel beam;2 - T type node board;3 - simple -supported C -purlin of existing;31 - the center line of simple -supported C -purlin of existing;4 - purlin reinforcing part;41 - connecting stud;411 - connecting nut;42 - center positioning bolt;43 - first self -tapping screw;44 - second self -tapping screw;45 - the symmetry axis of purlin reinforcing part;5 - sandwich board roof;6 - waterproof rubber mat. DETAILED DESCRIPTION

[0016] The utility model is further explained below.

[0017] The utility model provides a kind of continuous reinforcement structure of simply supported C purlin, mainly for connecting adjacent simply supported C purlin in roof photovoltaic support, including existing simply supported C purlin 3 and support steel beam 1, T type point board is equipped on the support steel beam 1, two adjacent the existing simply supported C purlin 3 is set on support steel beam 1 by T type node board 2;It further includes the purlin reinforcing member 4 for connecting two adjacent the existing simply supported C purlin 3, two ends of the purlin reinforcing member 4 are connected with two adjacent the existing simply supported C purlin 3 respectively;The section of the purlin reinforcing member 4 is C type, the opening of the purlin reinforcing member 4 is oppositely arranged with the opening of existing simply supported C purlin 3, the purlin reinforcing member 4 is cladded and arranged on the outside of existing simply supported C purlin 3, and the purlin reinforcing member 4 and existing simply supported C purlin 3 form a frame structure with rectangular section by enclosing;First self-tapping screw 43 is arranged on the upper flange of the purlin reinforcing member 4 with interval, the tip of first self-tapping screw 43 is in sequence penetrated the upper flange of purlin reinforcing member 4, the upper flange of existing simply supported C purlin 3;Second self-tapping screw 44 is arranged on the lower flange of the purlin reinforcing member 4 with interval, the tip of second self-tapping screw 44 is in sequence penetrated the lower flange of purlin reinforcing member 4, the lower flange of existing simply supported C purlin 3.

[0018] As Figure 1 、 Figure 2 The continuous reinforcement structure of existing simply supported C purlin includes existing support steel beam 1, T type node board 2 is equipped on support steel beam 1, T type node board 2 is used to connect and install two existing simply supported C purlin 3, to ensure the installation stability of existing simply supported C purlin 3, angle steel can be further arranged on the other side of T type node board 2 to support;Purlin reinforcing member 4 is arranged between two existing simply supported C purlin 3, two ends of the purlin reinforcing member 4 are fixedly connected with two existing simply supported C purlin 3 arranged on T type node board 2 respectively, to achieve the purpose of connecting two adjacent existing simply supported C purlin 3 by purlin reinforcing member 4, to enhance the connection strength between adjacent existing simply supported C purlin 3;The section of purlin reinforcing member 4 is C type, and the opening of the purlin reinforcing member 4 is oppositely arranged with the opening of existing simply supported C purlin 3, and purlin reinforcing member 4 is cladded and arranged on the outside of existing simply supported C purlin 3, specifically, Figure 2As shown, the purlin reinforcement 4 and the existing simply supported C-shaped purlin 3 are combined to form a frame structure with a rectangular cross section, that is, the upper flange of the purlin reinforcement 4 is in contact with the upper flange of the existing simply supported C-shaped purlin 3, and the lower flange of the purlin reinforcement 4 is in contact with the lower flange of the existing simply supported C-shaped purlin 3; the purlin reinforcement 4 and the existing simply supported C-shaped purlin 3 form a frame structure with a rectangular cross section, which greatly increases the cross-sectional inertia moment and stiffness of the purlin, thereby improving its bearing capacity, allowing the purlin to better share and transfer the load, reducing the force concentration phenomenon of a single purlin, and extending the service life of the continuous reinforcement structure of the existing simply supported C-shaped purlin; the connection method of the purlin reinforcement 4 and the existing simply supported C-shaped purlin 3 can be welding, but in order to facilitate installation and maintenance, as shown in FIG. Figure 1 As shown, first self-tapping screws 43 are provided at intervals on the upper flange of the purlin reinforcement 4, and the tips of the first self-tapping screws 43 pass through the upper flange of the purlin reinforcement 4 and the upper flange of the existing simply supported C-type purlin 3 in sequence; second self-tapping screws 44 are provided at intervals on the lower flange of the purlin reinforcement 4, and the tips of the second self-tapping screws 44 pass through the lower flange of the purlin reinforcement 4 and the lower flange of the existing simply supported C-type purlin 3 in sequence; the first self-tapping screws 43 and the second self-tapping screws 44 are used for fixing and installation, and the installation process is simple and fast, which is convenient for subsequent maintenance and inspection, and effectively reduces maintenance costs and time costs; and the first self-tapping screws 43 can also be used to fix the sandwich panel roof 5 that needs to be set above the existing simply supported C-type purlin 3 on the purlin reinforcement 4, and then connected to the existing simply supported C-type purlin 3. The existing simply supported C-shaped purlin continuous reinforcement structure utilizes the purlin reinforcement 4 to connect the existing simply supported C-shaped purlins 3 arranged on both sides of the mid-span support point, i.e., on both sides of the supporting steel beam 1, and the purlin reinforcement 4 is installed along the opening direction of the existing simply supported C-shaped purlin 3 to form a closed cross-section. Along the length direction of the purlin reinforcement 4, the second self-tapping screw 44 is nailed into the lower flange of the existing simply supported C-shaped purlin 3 and the purlin reinforcement 4, and the first self-tapping screw 43 is nailed into the upper side of the sandwich panel roof 5 and the upper flange of the existing simply supported C-shaped purlin 3 and the purlin reinforcement 4, so as to realize the continuous reinforcement of the existing simply supported C-shaped purlin 3; the continuously arranged existing simply supported C The profiled purlin 3 increases the structural integrity and overall stability, transforming the original open cross-section into a closed one. This significantly improves the purlin system's ability to resist lateral and torsional forces, effectively resisting external loads (such as wind and snow loads). This changes the structural load, making the stress distribution of the existing simply supported C-shaped purlin 3 more uniform, reducing the possibility of structural displacement or damage, and better able to withstand additional loads. Furthermore, the dimensions of the purlin reinforcement 4 are customized based on the dimensions and span of the existing simply supported C-shaped purlin 3, making it suitable for existing simply supported C-shaped purlins 3 of different specifications and sizes, and demonstrating good versatility and adaptability. Furthermore, by adjusting the size and shape of the purlin reinforcement 4, different design requirements and load conditions can be flexibly met.

[0019] To further strengthen the connection strength of the purlin reinforcement 4 to two adjacent existing simply supported C-shaped purlins 3, as shown in Figure 1 The two ends of the purlin reinforcement 4 are respectively provided with a connecting piece for connecting with the web of the existing simply supported C-shaped purlin 3, the connecting piece comprises a connecting stud 41 which penetrates the web of the purlin reinforcement 4, the web of the existing simply supported C-shaped purlin 3 and the T-shaped joint plate 2 in sequence and is fixedly connected with the T-shaped joint plate 2, and the end of the connecting stud 41 penetrating the T-shaped joint plate 2 is provided with a connecting nut 411 which is threadedly connected with the connecting stud 41; by providing the connecting piece at the two ends of the purlin reinforcement 4, the web of the purlin reinforcement 4 is connected with the web of the existing simply supported C-shaped purlin 3 by the connecting piece, so as to realize the firm connection between the purlin reinforcement 4 and the existing simply supported C-shaped purlin 3 and the T-shaped joint plate 2, and the overall structure and stability are enhanced; specifically, the connecting stud 41 penetrates the web of the purlin reinforcement 4, the web of the existing simply supported C-shaped purlin 3 and the T-shaped joint plate 2 in sequence and is fixedly connected with the T-shaped joint plate 2, so as to realize the firm connection between the purlin reinforcement 4 and the existing simply supported C-shaped purlin 3 and the T-shaped joint plate 2, enhance the overall structure and stability, and improve the anti-seismic and anti-wind capacity of the structure.

[0020] To ensure that the overall structure is more uniform under stress, and to avoid excessive local stress, as shown in Figure 1 The plurality of connecting studs 41 are uniformly arranged on the web of the purlin reinforcement 4; specifically, the connecting studs 41 are arranged at the two ends of the purlin reinforcement 4 connected with the existing simply supported C-shaped purlin 3, and the plurality of connecting studs 41 are symmetrically arranged on the purlin reinforcement 4 with the center line 31 of the existing simply supported C-shaped purlin as the axis, and specifically can be arranged in a matrix as shown in Figure 1 The connecting studs 41 are uniformly arranged on the purlin reinforcement 4, effectively improving the connection stability of the purlin reinforcement 4 and the existing simply supported C-shaped purlin 3, and making the stress of the structure more uniform and avoiding excessive local stress; it is also convenient for the operator to install, avoiding the problem of too dense arrangement of the connecting studs 41.

[0021] To ensure the accurate positioning of the purlin reinforcement 4 on the existing simply supported C-shaped purlin 3 and improve the installation efficiency of the operator, as shown in Figure 1 The connecting piece further comprises a center positioning bolt 42 which penetrates the web of the purlin reinforcement 4, the web of the existing simply supported C-shaped purlin 3 and the T-shaped joint plate 2 in sequence and is fixedly connected with the T-shaped joint plate 2, and the center positioning bolt 42 is arranged on the center line 31 of the existing simply supported C-shaped purlin and between the connecting stud 41 and the symmetric axis of the purlin reinforcement 4; by additionally arranging the center positioning bolt 42 on the center line of the existing simply supported C-shaped purlin 3, the operator can position and install, and the connection strength between the purlin reinforcement 4 and the existing simply supported C-shaped purlin 3 and the T-shaped joint plate 2 can also be enhanced.

[0022] The symmetry axis of the purlin reinforcement 4 is in line with the symmetry axis of the support steel beam 1, so that the purlin reinforcement 4 is balanced at both ends when connecting two adjacent existing simply supported C-shaped purlins 3, and the load transfer path between the purlin reinforcement 4 and the support steel beam 1 is more direct, reducing stress concentration during load transfer.

[0023] Further, in order to ensure the stability of the connection of the purlin reinforcement 4 to the existing simply supported C-shaped purlin 3 while saving costs, the length of the purlin reinforcement 4 is 1 / 4-1 / 3 of the length of the existing simply supported C-shaped purlin 3. Designing the length of the purlin reinforcement 4 to be 1 / 4-1 / 3 of the length of the existing simply supported C-shaped purlin 3 not only ensures the stability of the connection to the existing simply supported C-shaped purlin 3, but also ensures the strengthening effect of the purlin reinforcement 4 on the existing simply supported C-shaped purlin 3, while avoiding material waste and saving costs.

[0024] In order to avoid rainwater from penetrating into the sandwich panel roof 5 and the existing simply supported C-shaped purlin 3 and the purlin reinforcement 4, affecting the structural strength, as shown in Figure 1 Figure 2 A waterproof rubber pad 6 adapted to the first self-tapping screw 43 is arranged on each first self-tapping screw 43. By arranging a waterproof rubber pad 6 adapted to each first self-tapping screw 43, rainwater and other liquids are effectively prevented from penetrating into the structure through the screw hole, thereby improving the waterproof performance and durability of the entire continuous strengthening structure of the existing simply supported C-shaped purlin.

[0025] In order to reasonably set the spacing between adjacent first self-tapping screws and adjacent second self-tapping screws, not only to ensure the connection strength, but also to avoid excessive density of the first self-tapping screws and the second self-tapping screws, which would lead to material waste and installation difficulty, the spacing between adjacent first self-tapping screws is 250mm, and the spacing between adjacent second self-tapping screws is 125mm. Since the first self-tapping screws not only need to fix the upper flanges of the purlin reinforcement and the existing simply supported C-shaped purlin, but also need to fix the sandwich panel roof arranged on the existing simply supported C-shaped purlin, the size of the first self-tapping screws is larger than that of the second self-tapping screws. Therefore, the spacing of the first self-tapping screws arranged on the upper flange of the purlin reinforcement is controlled to be 250mm, which not only ensures reasonable spacing, but also ensures connection strength. The second self-tapping screws are used to fix the lower flanges of the purlin reinforcement and the existing simply supported C-shaped purlin. In order to ensure the tightness of the connection between the lower flange of the purlin reinforcement and the lower flange of the existing simply supported C-shaped purlin, the spacing of the second self-tapping screws arranged on the lower flange of the purlin reinforcement is controlled to be 150mm. Such arrangement not only ensures the stability of the connection between the purlin reinforcement and the existing simply supported C-shaped purlin, but also effectively controls the number of first self-tapping screws and second self-tapping screws, thereby improving the installation efficiency.

[0026] ​With actual engineering application as an example, the beneficial effects of the continuous reinforcement structure of the existing simply supported C purlin are illustrated: a certain closed single-span double-slope portal frame engineering, with a span of 30 m, a column spacing of 6.0 m, an eave height of 10 m, a single-layer profiled steel roof, a slope of i-1 / 10 (α=5.71°), a purlin span of 6 m, a bracing bar in the middle, a horizontal distance of 1.5 m, a basic wind pressure of 0.4 kN / m 2 , a ground roughness category B, a wind pressure height variation coefficient u z =1.04, a snow load standard value of 0.5 kN / m 2 (considering uneven distribution of accumulated snow), a roof live load of 0.5 kN / m 2 , and steel Q235-B, the cold-bent thin-walled lipped channel steel purlin type LC6-18.3 is selected. When the roof photovoltaic panel cell needs to be added, the new roof load is about 0.2 kN / m 2 . At this time, the required roof purlin type is LC6-20.3 through calculation; compared with replacing the existing purlin, the continuous reinforcement structure of the existing simply supported C purlin can save about 60% of the steel per meter (compared with replacing all the purlins with new types), while avoiding the construction cost required for the removal of the existing simply supported C purlin, greatly saving the construction period and improving the economy of the project, and the continuous reinforcement structure of the existing simply supported C purlin increases the sectional moment of inertia by about 1 times (compared with the sectional moment of the existing simply supported C purlin), improving the bearing capacity of the section.

Claims

1. A continuous reinforcement structure of existing simply supported C-shaped purlin, comprising an existing simply supported C-shaped purlin (3) and a supporting steel beam (1), wherein a T-shaped joint plate (2) is arranged on the supporting steel beam (1), and two adjacent existing simply supported C-shaped purlins (3) are arranged on the supporting steel beam (1) through the T-shaped joint plate (2); characterized in that: The purlin reinforcing piece (4) is connected with the webs of the two adjacent existing simply supported C-shaped purlins (3) at two ends. ​ 2. A continuous stiffening structure for a simply supported C-purlin according to claim 1, characterized in that: The purlin reinforcing piece (4) is connected with the webs of the two adjacent existing simply supported C-shaped purlins (3) at two ends.

3. A continuous stiffening structure for a simply supported C-purlin of claim 2, wherein: The purlin reinforcing piece (4) is connected with the webs of the two adjacent existing simply supported C-shaped purlins (3) at two ends.

4. A continuous strengthening structure for a simply supported C-purlin of claim 2, characterized by: The purlin reinforcing piece (4) is connected with the webs of the two adjacent existing simply supported C-shaped purlins (3) at two ends.

5. A continuous stiffening structure for a simply supported C-purlin of claim 1, wherein: The purlin reinforcing piece (4) is connected with the webs of the two adjacent existing simply supported C-shaped purlins (3) at two ends.

6. A continuous stiffening structure for a simply supported C-purlin of claim 1, wherein: The purlin reinforcing piece (4) is connected with the webs of the two adjacent existing simply supported C-shaped purlins (3) at two ends.

7. A continuous stiffening structure for a simply supported C-purlin of claim 1, wherein: The purlin reinforcing piece (4) is connected with the webs of the two adjacent existing simply supported C-shaped purlins (3) at two ends.

8. A continuous stiffening structure for a simply supported C-purlin of claim 1, wherein: The purlin reinforcing piece (4) is connected with the webs of the two adjacent existing simply supported C-shaped purlins (3) at two ends. The purlin reinforcing piece (4) is connected with the webs of the two adjacent existing simply supported C-shaped purlins (3) at two ends. The purlin reinforcing piece (4) is connected with the webs of the two adjacent existing simply supported C-shaped purlins (3) at two ends. The purlin reinforcing piece (4) is connected with the webs of the two adjacent existing simply supported C-shaped purlins (3) at two ends. The purlin reinforcing piece (4) is connected with the webs of the two adjacent existing simply supported C-shaped purlins (3) at two ends. The purlin reinforcing piece (4) is connected with the webs of the two adjacent existing simply supported C-shaped purlins (3) at two ends. 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