A double-layer purline connecting joint of a latticed shell

Abstract

A kind of double-layer purlin connecting node of latticed shell, belong to latticed shell purlin connecting technical field, including main purlin, secondary purlin, vertical angle steel purlin support, horizontal welding purlin support, horizontal welding purlin support is L type, the vertical side edge of horizontal welding purlin support is connected with the one side plane outside fixed connection of vertical angle steel purlin support, the two sides of main purlin adjacent vertical are respectively connected with the one side plane of vertical angle steel purlin support and the one side plane of horizontal welding purlin support fixed connection;Secondary purlin is fixedly connected with the other side plane of vertical angle steel purlin support and the other side plane of horizontal welding purlin support;Profiled steel plate is fixedly connected with secondary purlin.The utility model has solved the problem of main purlin lateral constraint, also avoided the tedious procedure of high-altitude installation when setting support rod, stay bracing system, reduces construction difficulty.

Description

Technical Field

[0001] This utility model belongs to the field of purlin connection technology for reticulated shells, and particularly relates to a connection node for double-layer purlins of reticulated shells. Background Technology

[0002] A reticulated shell structure is a spatial grid structure composed of interconnected members arranged according to specific geometric rules, forming a spatial load-bearing system with curved surfaces. In a reticulated shell structure, the main purlins and secondary purlins together constitute the roof purlin system covering the main structure of the reticulated shell. Their main function is to support the roof cladding materials and transfer the loads borne by these materials to the nodes of the reticulated shell structure below.

[0003] The main purlin is usually arranged along the main grid direction of the grid shell structure and is the main load-bearing component in the purlin system. It is usually installed directly on the nodes or top chord of the grid shell. The secondary purlin is the secondary load-bearing component in the purlin system. It is installed above the main purlin and is usually perpendicular to the main purlin. Its function is to reduce the support span of the roof panel and distribute the load of the roof panel more evenly to the main purlin.

[0004] Due to the unique stress characteristics of reticulated shell structures, secondary and primary purlins are typically arranged in a double-layer configuration. The primary purlins bear the loads transmitted from the secondary purlins, thus having a larger load-bearing area. Without reliable lateral restraint, the primary purlins require a large cross-section, which is economical; using common strut and tie rod support systems presents significant construction difficulties at heights. Therefore, how to provide reliable lateral restraint for the primary purlins while also facilitating high-altitude installation has become a problem that engineering designers need to solve. Utility Model Content

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, this utility model provides a double-layer purlin connection node with a mesh shell, which aims to ensure reliable lateral constraint for the main purlin and facilitate high-altitude installation.

[0006] To achieve the above objectives, the main technical solutions adopted by this utility model include: A double-layer purlin connection node for a reticulated shell includes a main purlin, secondary purlins, vertical angle steel purlin supports, and horizontal welded purlin supports. The horizontal welded purlin supports are L-shaped, and their vertical side edges are fixedly connected to the outer side of one side plane of the vertical angle steel purlin support. The two adjacent vertical sides of the main purlin are fixedly connected to one side plane of the vertical angle steel purlin support and one side plane of the horizontal welded purlin support, respectively. The secondary purlins are simultaneously fixedly connected to the other side plane of both the vertical angle steel purlin support and the other side plane of the horizontal welded purlin support. A profiled steel sheet is fixedly connected to the secondary purlins.

[0007] Furthermore, the vertical angle steel purlin support is fixedly connected to the web of the main purlin.

[0008] Furthermore, the horizontally welded purlin bracket is fixedly connected to the flange of the main purlin.

[0009] Furthermore, the vertical angle steel purlin support and the horizontal welded purlin support are fixedly connected to the web of the secondary purlin.

[0010] Furthermore, the vertical angle steel purlin support and the horizontal welded purlin support are connected by fillet welds.

[0011] Furthermore, the main purlin is fixedly connected to the vertical angle steel purlin support and the horizontal welded purlin support by connecting bolts.

[0012] Furthermore, the secondary purlin is fixedly connected to the vertical angle steel purlin support and the horizontal welded purlin support by connecting bolts.

[0013] Furthermore, an elongated elliptical hole is provided on the horizontal welding purlin, and the connecting bolt is disposed in the elongated elliptical hole.

[0014] Furthermore, the profiled steel sheet is fixedly connected to the secondary purlin using self-tapping screws.

[0015] The beneficial effects of this utility model are as follows: This utility model has a simple and practical structure. It uses vertical angle steel purlin supports connected to the web of the main purlin, and horizontal welded purlin supports connected to the flanges of the main purlin. The purlin supports are also connected to the web of the secondary purlins. This solves the problem of lateral constraint of the main purlin and avoids the cumbersome high-altitude installation procedures required when setting up strut and tie rod support systems, thus reducing construction difficulty. The double-layer purlin connection node of this utility model is easy to install, has clear force transmission, and is safe and practical. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the double-layer purlin connection node structure of the reticulated shell of this utility model; Figure 2 for Figure 1 A cross-sectional view at point AA; Figure 3 for Figure 1 A cross-sectional view at point BB.

[0017] In the diagram: 1. Main purlin; 2. Secondary purlin; 3. Profiled steel sheet; 4. Vertical angle steel purlin support; 5. Horizontal welded purlin support; 6. Connecting bolts. Detailed Implementation

[0018] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] This utility model provides a double-layer purlin connection node for a reticulated shell, such as... Figure 1-3As shown, it includes a main purlin 1, a secondary purlin 2, a vertical angle steel purlin support 4, and a horizontal welded purlin support 5. The horizontal welded purlin support 5 is L-shaped, and its vertical side edge is fixedly connected to the outer side of one plane of the vertical angle steel purlin support 4. Specifically, the vertical angle steel purlin support 4 and the horizontal welded purlin support 5 are welded together by a fillet weld on the side of the non-connecting purlin.

[0020] The two adjacent vertical sides of the main purlin 1 are fixedly connected to one side plane of the vertical angle steel purlin support 4 and one side plane of the horizontal welded purlin support 5, respectively. Specifically, the main purlin 1 is fixedly connected to the vertical angle steel purlin support 4 and the horizontal welded purlin support 5 by connecting bolts 6. More specifically, the vertical angle steel purlin support 4 is fixedly connected to the web of the main purlin 1, and the horizontal welded purlin support 5 is fixedly connected to the flange of the main purlin 1. Both the web and the upper flange of the main purlin 1 are connected to the purlin support.

[0021] The secondary purlin 2 is fixedly connected to both the other side of the vertical angle steel purlin support 4 and the other side of the horizontal welded purlin support 5. Specifically, the vertical angle steel purlin support 4 and the horizontal welded purlin support 5 are fixedly connected to the web of the secondary purlin 2. More specifically, the secondary purlin 2 is fixedly connected to the vertical angle steel purlin support 4 and the horizontal welded purlin support 5 by connecting bolts 6. The horizontal welded purlin support 5 has elongated elliptical holes, and the connecting bolts 6 are installed in the elongated elliptical holes for easy adjustment. The upper part of one outer side plane of the vertical angle steel purlin support 4 is fixedly connected to the web of the secondary purlin 2, and the lower part of the other outer side plane of the vertical angle steel purlin support 4 is fixedly connected to the web of the main purlin 1. The outer side plane of one L-shaped plate of the horizontal welded purlin support 5 is fixedly connected to the web of the secondary purlin 2, and the outer side plane of the other horizontal welded purlin support 5 is fixedly connected to the flange of the main purlin 1. The horizontal welded purlin support 5 and the vertical angle steel purlin support 4 are close to each other on one side, and the edges of the non-connecting main purlin 1 and secondary purlin 2 are welded together by fillet welds.

[0022] The profiled steel sheet 3 is fixedly connected to the secondary purlin 2. Specifically, the profiled steel sheet 3 and the secondary purlin 2 are fixedly connected by self-tapping screws.

[0023] During construction, firstly, the vertical angle steel purlin support 4 and the horizontal welded purlin support 5 are connected by fillet weld. Then, the main purlin 1 is connected to the vertical angle steel purlin support 4 and the horizontal welded purlin support 5 by connecting bolts 6. Next, the secondary purlin 2 is connected to the vertical angle steel purlin support 4 and the horizontal welded purlin support 5 by connecting bolts 6. Finally, the profiled steel sheet 3 is connected to the secondary purlin 2 by self-tapping screws.

[0024] This utility model uses vertical angle steel purlin supports connected to the web of the main purlin, horizontal welded purlin supports connected to the flange of the main purlin, and purlin supports connected to the web of the secondary purlin. This not only solves the problem of lateral constraint of the main purlin, but also avoids the cumbersome procedures of high-altitude installation when setting up strut and tie rod support systems, thus reducing the difficulty of construction.

[0025] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any modifications, alterations, substitutions, and variations made by those skilled in the art to the above embodiments are within the scope of the present invention.

Claims

1. A double-layer purlin connection node for a reticulated shell, characterized in that: It includes a main purlin (1), a secondary purlin (2), a vertical angle steel purlin support (4), and a horizontal welded purlin support (5). The horizontal welded purlin support (5) is L-shaped. The vertical side edge of the horizontal welded purlin support (5) is fixedly connected to the outside of one side plane of the vertical angle steel purlin support (4). The two adjacent vertical sides of the main purlin (1) are fixedly connected to one side plane of the vertical angle steel purlin support (4) and one side plane of the horizontal welded purlin support (5), respectively. The secondary purlin (2) is fixedly connected to the other side plane of the vertical angle steel purlin support (4) and the other side plane of the horizontal welded purlin support (5). The profiled steel sheet (3) is fixedly connected to the secondary purlin (2).

2. The reticulated shell double-layer purlin connection node according to claim 1, characterized in that: The vertical angle steel purlin support (4) is fixedly connected to the web of the main purlin (1).

3. The reticulated shell double-layer purlin connection node according to claim 1, characterized in that: The horizontally welded purlin bracket (5) is fixedly connected to the flange of the main purlin (1).

4. A double-layer purlin connection node for a reticulated shell according to claim 1, characterized in that: The vertical angle steel purlin support (4) and the horizontal welded purlin support (5) are fixedly connected to the web of the secondary purlin (2).

5. A double-layer purlin connection node for a reticulated shell according to claim 1, characterized in that: The vertical angle steel purlin support (4) and the horizontal welded purlin support (5) are connected by fillet weld.

6. A double-layer purlin connection node for a reticulated shell according to claim 1, 2, or 3, characterized in that: The main purlin (1) is fixedly connected to the vertical angle steel purlin support (4) and the horizontal welded purlin support (5) by connecting bolts (6).

7. A reticulated shell double-layer purlin connection node according to claim 1 or 4, characterized in that: The secondary purlin (2) is fixedly connected to the vertical angle steel purlin support (4) and the horizontal welded purlin support (5) by connecting bolts (6).

8. A double-layer purlin connection node for a reticulated shell according to claim 7, characterized in that: The horizontal welding purlin (5) has an elongated elliptical hole, and the connecting bolt (6) is set in the elongated elliptical hole.

9. A double-layer purlin connection node for a reticulated shell according to claim 1, characterized in that: The profiled steel sheet (3) and the secondary purlin (2) are fixedly connected by self-tapping screws.

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