Multi-span statically determinate beam roof C-shaped purline
Through the multi-span static beam design and the back-to-back connection of C-type purlins, the difficulty of splicing of roof purlins at the support is solved, the economicality and construction convenience of the structure are realized, and the torsional stiffness and safety of the roof structure are improved.
Patent Information
- Application Number
- CN202422278279.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-19
AI Technical Summary
The existing roof C-shaped purlins are difficult to splice at the support, and are not economical when the span is large, and have large deformation, making it difficult to take into account both economical and construction convenience.
The multi-span static fixed beam design is adopted, and the splicing point is adjusted to the middle of the span. Two C-type purlins are connected back to back to form a connecting component, which enhances torsional stiffness, and connects it close to the theoretical reverse bend point of the continuous beam. Multiple bolts are provided to ensure structural stability.
It improves the torsional stiffness and construction convenience of the roof structure, reduces the bending moment, enhances the safety and economy of the structure, and facilitates installation and construction.
Smart Images
Figure CN223061886U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of construction engineering, in particular to a C-shaped purlin for a multi-span statically determinate beam roof. Background Technique
[0002] The roof purlin is a component used to support roof materials in a building structure. Currently, roof purlins are usually made according to the simply supported beam method or the continuous beam method. The roof purlin made according to the simply supported beam method needs to be disconnected at the support position, so the following defects will occur: (1) The bending moment at the mid-span of the purlin is large and the deformation is large; (2) When the span of the purlin is large, the cross-section cannot be fully utilized, which is uneconomical; The roof purlin made according to the continuous beam method has better economy when the span is large, but it is more difficult to splice the C-shaped purlin at the support.
[0003] Therefore, it is urgent to solve the problems such as difficult splicing of the C-shaped purlin at the support. Summary of the Invention
[0004] The purpose of the utility model is to provide a C-shaped purlin for a multi-span statically determinate beam roof, which adjusts the splicing point to the mid-span, can avoid the splicing of the C-shaped purlin at the support, and thus effectively solves the problem of difficult splicing of the C-shaped purlin at the support; at the same time, starting from the force of the C-shaped purlin, the splicing point position is set at the place where the force is smaller, which can take into account economy and construction convenience.
[0005] The purpose of the utility model can be realized by the following technical solutions:
[0006] The technical solution of the utility model is to provide a C-shaped purlin for a multi-span statically determinate beam roof. The roof C-shaped purlin includes a left-span purlin, a middle-span purlin, a right-span purlin, and a connecting component for connecting adjacent-span C-shaped purlins. The connecting component includes a first connecting C-shaped purlin and a second connecting C-shaped purlin respectively symmetrically arranged on both sides of adjacent-span C-shaped purlins. The first connecting C-shaped purlin and the second connecting C-shaped purlin are back-to-back and clamp the adjacent-span C-shaped purlins.
[0007] In some specific embodiments, the sum of the effective cross-sectional areas of the first connecting C-shaped purlin and the second connecting C-shaped purlin ≥ the cross-sectional areas of the left-span C-shaped purlin, the middle-span C-shaped purlin, and the right-span C-shaped purlin.
[0008] In some specific embodiments, a plurality of bolts for connecting adjacent-span C-shaped purlins are provided on the first connecting C-shaped purlin and the second connecting C-shaped purlin.
[0009] In some specific embodiments, there are 8 bolts. Among them, 4 bolts are used to connect the left-span or right-span C-shaped purlin, the first connecting C-shaped purlin, and the second connecting C-shaped purlin, and 4 bolts are used to connect the middle-span C-shaped purlin, the first connecting C-shaped purlin, and the second connecting C-shaped purlin.
[0010] In some specific embodiments, the transverse and longitudinal central axes of the first connecting C-shaped purlin and the second connecting C-shaped purlin are coaxially arranged with the transverse and longitudinal central axes of the adjacent-span C-shaped purlins respectively.
[0011] In some specific embodiments, a plurality of steel beams are provided at the bottoms of the left-span C-shaped purlin and the right-span C-shaped purlin, and a plurality of supports corresponding to the steel beams are provided on the left-span C-shaped purlin and the right-span C-shaped purlin.
[0012] In some specific embodiments, the length between the two connecting components is 80% of the length between two adjacent supports on the left-span C-shaped purlin and the right-span C-shaped purlin.
[0013] In some specific embodiments, the wall thickness of the first connecting C-shaped purlin and the second connecting C-shaped purlin ≥ 2.0 mm.
[0014] In some specific embodiments, there is a 10-mm gap between the left-span C-shaped purlin and the middle-span C-shaped purlin, and there is a 10-mm gap between the middle-span C-shaped purlin and the right-span C-shaped purlin.
[0015] In some specific embodiments, the left-span C-shaped purlin, the middle-span C-shaped purlin 2, and the right-span C-shaped purlin are all continuous purlins.
[0016] Compared with the prior art, the utility model has the following beneficial effects:
[0017] (1) The utility model uses two C-shaped purlins to connect the adjacent-span C-shaped purlins back to back, and the formed splicing point has good torsional stiffness.
[0018] (2) The connecting component of the utility model is located near the theoretical inflection point of the continuous beam, with a small bending moment, and is also close to the support of the steel beam, which is convenient for installation and construction.
[0019] (3) The utility model is provided with a plurality of fixing bolts at the connecting component, which increases the safety margin and can effectively prevent the failure of the overall structure caused by the loosening of individual bolts.
[0020] (4) The C-shaped purlin adopted by the utility model has the same material as the adjacent-span C-shaped purlin, with low cost, close stiffness, and easy to coordinate deformation. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 is a schematic structural diagram of the utility model.
[0022] Figure 2 is a partial front view structural diagram of the splicing part of the utility model.
[0023] Figure 3This is a side view structural diagram of the splicing part of the present utility model.
[0024] The markings in the figure are as follows:
[0025] 1 is the left-span C-shaped purlin, 2 is the middle-span C-shaped purlin, 3 is the right-span C-shaped purlin, 4 is the connecting component, 4-1 is the first connecting C-shaped purlin, 4-2 is the second connecting C-shaped purlin, 4-3 is the bolt, 5 is the steel beam, and 6 is the support. Specific implementation manners
[0026] The present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present utility model, and gives the detailed implementation manners and specific operation processes, but the protection scope of the present utility model is not limited to the following embodiments.
[0027] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0028] The following will describe in detail some implementation manners of the present utility model with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.
[0029] In the following embodiments, if there is no specifically described functional component or structure, it means that they are all conventional components or conventional structures adopted in the art to achieve the corresponding functions.
[0030] Embodiment 1:
[0031] As Figures 1-3 shown, it is a multi-span statically determinate beam roof C-shaped purlin. The roof C-shaped purlin includes a left-span C-shaped purlin 1, a middle-span C-shaped purlin 2, a right-span C-shaped purlin 3, and a connecting component 4 for connecting adjacent-span C-shaped purlins. The connecting component 4 includes a first connecting C-shaped purlin 4-1 and a second connecting C-shaped purlin 4-2 symmetrically arranged on both sides of adjacent-span C-shaped purlins. The first connecting C-shaped purlin 4-1 and the second connecting C-shaped purlin 4-2 are back-to-back and clamp the adjacent-span C-shaped purlin.
[0032] The C-shaped purlin has sufficient flexural strength, lightness, and durability. Based on the multi-span statically determinate beam, this technical solution designs a multi-span C-shaped purlin and combines the connecting component as the splicing point as the roof purlin, making the overall structure more stable and improving the load-bearing capacity of the entire roof.
[0033] Based on the design of a multi-span statically determinate beam, the left-span C purlin 1, the middle-span C purlin 2, and the right-span C purlin 3 are all continuous purlins. There is a 10-mm gap between the left-span C purlin 1 and the middle-span C purlin 2, and a 10-mm gap between the middle-span C purlin 2 and the right-span C purlin 3. The selected first connecting C purlin 4-1, second connecting C purlin 4-2, left-span C purlin 1, middle-span C purlin 2, and right-span C purlin 3 are of the same material. The sum of the effective cross-sectional areas of the first connecting C purlin 4-1 and the second connecting C purlin 4-2 ≥ the cross-sectional areas of the left-span C purlin 1, middle-span C purlin 2, and right-span C purlin 3. Here, the effective cross-sectional areas of the first connecting C purlin 4-1 and the second connecting C purlin 4-2 are the cross-sectional areas perpendicular to their axis directions that actually participate in bearing the load, and this area determines the ability of the C purlin to bear the load and make connections in the structure. The cross-sectional areas of the left-span C purlin 1, middle-span C purlin 2, and right-span C purlin 3 are also the cross-sectional areas perpendicular to their axis directions that actually participate in bearing the load. The wall thickness of the first connecting C purlin 4-1 and the second connecting C purlin 4-2 ≥ 2.0 mm.
[0034] At the connecting component 4, the transverse and longitudinal central axes of the first connecting C purlin 4-1 and the second connecting C purlin 4-2 are coaxially arranged with the transverse and longitudinal central axes of the adjacent-span C purlins respectively. Here, the transverse and longitudinal central axes refer to taking the vertical direction of the two parallel side walls of the C purlin as the longitudinal axis direction and the through direction of the C purlin as the transverse axis direction. In this embodiment, as Figure 3As shown, the through direction of the first connecting C-shaped purlin 4-1 is horizontally placed, that is, the two parallel sides of the first connecting C-shaped purlin 4-1 are horizontally placed. The through direction of the second connecting C-shaped purlin 4-2 is also horizontally placed, that is, the two parallel sides of the second connecting C-shaped purlin 4-2 are horizontally placed. The first connecting C-shaped purlin 4-1 and the second connecting C-shaped purlin 4-2, as well as the adjacent-span C-shaped purlins (for the connecting component 4 on the left side of the middle-span C-shaped purlin 2, the adjacent-span C-shaped purlins involved are the middle-span C-shaped purlin 2 and the left-span C-shaped purlin 1; for the connecting component 4 on the right side of the middle-span C-shaped purlin 2, the adjacent-span C-shaped purlins involved are the middle-span C-shaped purlin 2 and the right-span C-shaped purlin 3) between the first connecting C-shaped purlin 4-1 and the second connecting C-shaped purlin 4-2 are connected and fixed by a plurality of bolts 4-3. In this embodiment, there are 8 bolts 4-3. In the connecting component 4 on the left side of the middle-span C-shaped purlin 2, 4 bolts 4-3 are used to connect and fix the left-span C-shaped purlin 1, the first connecting C-shaped purlin 4-1 and the second connecting C-shaped purlin 4-2, and 4 bolts 4-3 are used to connect and fix the middle-span C-shaped purlin 2, the first connecting C-shaped purlin 4-1 and the second connecting C-shaped purlin 4-2. In the splicing point 4 on the right side of the middle-span C-shaped purlin 2, 4 bolts 4-3 are used to connect and fix the middle-span C-shaped purlin 2, the first connecting C-shaped purlin 4-1 and the second connecting C-shaped purlin 4-2, and 4 bolts 4-3 are used to connect and fix the right-span C-shaped purlin 3, the first connecting C-shaped purlin 4-1 and the second connecting C-shaped purlin 4-2. Thus, the safety redundancy of the structure is increased, and the failure of the structure caused by the loosening of individual bolts can be effectively prevented.
[0035] To support the left-span C-shaped purlin 1 and the right-span C-shaped purlin 3, a plurality of steel beams 5 are provided at the bottoms of the left-span C-shaped purlin 1 and the right-span C-shaped purlin 3, and a plurality of supports 6 corresponding to the steel beams 5 are provided on the left-span C-shaped purlin 1 and the right-span C-shaped purlin 3.
[0036] The length between the connecting components 4 at both ends of the middle-span C-shaped purlin 2 (which can be understood as the length of the middle-span C-shaped purlin 2) is 80% of the length L between two adjacent supports 6 on the left-span C-shaped purlin 1 and the right-span C-shaped purlin 3. Among them, the length between the support 6 on the left-span C-shaped purlin 1 and the connecting component 4 at the left end of the middle-span C-shaped purlin 2 accounts for 10% of L, and the length between the support 6 on the right-span C-shaped purlin 3 and the connecting component 4 at the right end of the middle-span C-shaped purlin 2 accounts for 10% of L. The connecting component 4 is close to the theoretical inflection point of the continuous beam, with a smaller bending moment, and is also closer to the support 6, which is convenient for installation and construction.
[0037] The above description of the embodiments is provided to enable those of ordinary skill in the art to understand and use the utility model. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative efforts. Therefore, the present utility model is not limited to the above embodiments, and all improvements and modifications made by those skilled in the art without departing from the scope of the present utility model according to the disclosure of the present utility model should be within the protection scope of the present utility model.
Claims
1. A multi-span statically determinate beam roof C-type purlin, characterized in that, The roof C-shaped purlin includes a left-span C-shaped purlin (1), a middle-span C-shaped purlin (2), a right-span C-shaped purlin (3), and a connecting component (4) for connecting adjacent-span C-shaped purlins. The connecting component (4) includes a first connecting C-shaped purlin (4-1) and a second connecting C-shaped purlin (4-2) symmetrically arranged on both sides of adjacent-span C-shaped purlins respectively. The first connecting C-shaped purlin (4-1) and the second connecting C-shaped purlin (4-2) are back-to-back and clamp the adjacent-span C-shaped purlins.
2. The multi-span statically determinate beam roof C purlin according to claim 1, wherein The sum of the effective cross-sectional areas of the first connecting C-shaped purlin (4-1) and the second connecting C-shaped purlin (4-2) ≥ the cross-sectional areas of the left-span C-shaped purlin (1), the middle-span C-shaped purlin (2), and the right-span C-shaped purlin (3).
3. The multi-span statically determinate beam roof C purlin according to claim 1, wherein, A number of bolts (4-3) for connecting adjacent-span C-shaped purlins are provided on the first connecting C-shaped purlin (4-1) and the second connecting C-shaped purlin (4-2).
4. The multi-span statically determinate beam roof C purlin according to claim 3, characterized in that, There are 8 bolts (4-3). Among them, 4 bolts are used to connect the left-span or right-span C-shaped purlin, the first connecting C-shaped purlin (4-1), and the second connecting C-shaped purlin (4-2), and 4 bolts are used to connect the middle-span C-shaped purlin, the first connecting C-shaped purlin (4-1), and the second connecting C-shaped purlin (4-2).
5. The multi-span statically determinate beam roof C-type purlin according to claim 1, characterized in that, The horizontal and vertical central axes of the first connecting C-shaped purlin (4-1) and the second connecting C-shaped purlin (4-2) are coaxial with the horizontal and vertical central axes of the adjacent-span C-shaped purlins respectively.
6. The multi-span statically determinate beam roof C purlin according to claim 1, wherein A number of steel beams (5) are provided at the bottoms of the left-span C-shaped purlin (1) and the right-span C-shaped purlin (3), and a number of supports (6) corresponding to the steel beams (5) are provided on the left-span C-shaped purlin (1) and the right-span C-shaped purlin (3).
7. The multi-span statically determinate beam roof C purlin according to claim 1, characterized in that, The length between two connecting components (4) is 80% of the length between two adjacent supports (6) located on the left-span C-shaped purlin (1) and the right-span C-shaped purlin (3).
8. The multi-span statically determinate beam roof C purlin according to claim 1, characterized in that, The wall thickness of the first connecting C-shaped purlin (4-1) and the second connecting C-shaped purlin (4-2) ≥ 2.0 mm.
9. The multi-span statically determinate beam roof C purlin according to claim 1, characterized in that, There is a 10-mm gap between the left-span C-shaped purlin (1) and the middle-span C-shaped purlin (2), and a 10-mm gap between the middle-span C-shaped purlin (2) and the right-span C-shaped purlin (3).
10. The multi-span statically determinate beam roof C purlin according to claim 1, characterized in that, The left-span C-shaped purlin (1), the middle-span C-shaped purlin (2), and the right-span C-shaped purlin (3) are all continuous purlins.