Disassembly-free steel bar truss supporting structure

Abstract

The utility model provides a non-dismantling type steel bar truss supporting structure which comprises a bearing plate truss set and a composite joint, the composite joint comprises two split fixing blocks which are symmetrically arranged, and the upper end and the lower end of the bearing plate truss set are respectively provided with layer plates which are welded and fixed. Each bearing plate truss set comprises an upper chord rib and two lower chord ribs, two sets of folding ribs are fixed to the two sides of each upper chord rib through a plurality of fixing points respectively, the folding ribs are bent reversely at uniform intervals, the folding points on one side of each folding rib and the upper chord ribs are welded and fixed, and the outer portions of the fixing points and the split fixing blocks are in a fixed state. Folding points on the other sides of the folding ribs are respectively welded with the two lower chord ribs; according to the disassembly-free steel bar truss disclosed by the utility model, the integrated composite node externally coated with the weldment is arranged at the bending welding spot position of the disassembly-free steel bar truss, so that the exterior of the welding spot position of the truss and the connecting section form a whole, the shear resistance of the welding spot in multiple directions can be effectively improved, and the strength of the welding spot is improved.

Description

Technical Field

[0001] This utility model relates to the field of non-removable truss slab overlapping technology, specifically a non-removable steel truss support structure. Background Technology

[0002] Non-removable truss floor slabs are commonly used for overlapping floor levels in buildings to mix with concrete layers during pouring, thereby increasing the support strength of the concrete layer and providing some support during the concrete pouring process. Existing non-removable truss floor slabs typically use equilateral triangular steel reinforcement arrangements, with multiple weld points formed by laterally set folded steel bars for welding fixation. However, the shear resistance of folded steel bars at the folded surface is inherently lower than that of straight steel bars. The main stress part of the combined truss is at this location, which can lead to fracture or weld failure, especially when connected to laterally supported trusses, thus affecting the overall strength of the non-removable truss floor slab.

[0003] To achieve the above objectives, this utility model provides a non-removable steel truss support structure, which can solve the problems mentioned in the background art. Utility Model Content

[0004] This utility model adopts the following technical solution:

[0005] A non-removable steel truss support structure includes a plate truss assembly and a composite node. The composite node includes two symmetrically arranged separate fixing blocks. The upper and lower ends of the plate truss assembly are respectively provided with welded and fixed layers.

[0006] Each of the aforementioned plate truss assemblies includes one upper chord and two lower chords. Two sets of folded bars are fixed to both sides of the upper chord through multiple fixing points. The folded bars are bent in the opposite direction at uniform intervals. One side of the folded bar is welded and fixed to the upper chord, and the outside of the fixing point is fixed to the split fixing block. The other side of the folded bar is welded to the two lower chords respectively.

[0007] Preferably, the two folded ribs and the two lower chord ribs are symmetrically arranged about both sides of the upper chord rib, and each split fixing block includes two straight pipe diameters in both directions and two oblique pipe diameters in both directions, as well as fixing endpoints, which are fixed together by welding.

[0008] Preferably, the inner wall of the straight pipe is an arc-shaped plate and is welded and fixed to the outside of the upper chord rib, and the two straight pipes are symmetrically arranged about the plane of the folding point of the folding rib.

[0009] Preferably, the folding ribs located on both sides of the folding point of the upper chord rib are arranged obliquely, and the inner walls of the two oblique pipes are arc-shaped plates that are welded and fixed to the outside of the folding rib. The two oblique pipes are symmetrically arranged about the folding plane of the folding rib.

[0010] Preferably, the plate truss assembly includes two vertically arranged plate truss assemblies and one horizontally arranged plate truss assembly with identical structures. The two ends of the horizontal plate truss assembly are welded and fixed to the two vertical plate truss assemblies laterally.

[0011] Each of the folding points of the folded ribs is further provided with a reinforcing rib that is welded perpendicularly to the lower chord rib. The split fixing block also includes a vertical pipe diameter, which is welded and fixed to the outside of the reinforcing rib.

[0012] Preferably, when the transverse truss assembly and the vertical truss assembly have the same dimensions, the upper chord of the transverse truss assembly is laterally connected to the composite node on the vertical truss assembly, and the vertical pipe diameter of the composite node is fixed to the outside of the upper chord.

[0013] Preferably, the composite node further includes multiple guide wires, which are bent and fixed to the upper chord, lower chord, and folded rib respectively.

[0014] Preferably, a fresh air duct is provided in the vertical bearing plate truss assembly, and a steel pipe is provided on the outside of the fresh air duct and welded and fixed to the bearing plate truss assembly.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This utility model sets an integrated externally wrapped welded composite node at the bending weld point of the non-removable steel truss, making the exterior of the truss weld point and the connecting section a whole, which can effectively improve the shear resistance of the weld point in multiple directions and enhance the weld point strength.

[0017] When applied to supportive weld points, using composite nodes to cover the bent weld points can reinforce the original horizontal and vertical truss weld nodes with a traction-type surface layer, effectively improving the lateral support force of the vertical truss to the horizontal truss and enhancing the shear resistance of the original weld nodes, making the truss more stable.

[0018] By using the modular fixing blocks, the folded ribs on both sides of the upper chord can be reinforced simultaneously. Utilizing the triangular arrangement of the truss, the single-piece modular fixing blocks can be flexibly installed at multiple different welding points. When two modular fixing blocks are fixed to each other, the strength of the bent weld points can be reinforced. When used separately, they can be used to reinforce the welding strength between the folded ribs and the lower chord ribs, as well as the lower layer plate.

[0019] Composite nodes provide multi-directional reinforcement space, enabling vertical reinforcement on the basis of the original truss, and can effectively improve the welding strength of multiple weld points at the support midpoint of the transverse support truss. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 For the present utility model Figure 1 A schematic diagram of the same connection node area at point A1 when the dimensions of the two plate truss groups are the same;

[0022] Figure 3 This is a top view of the composite node of this utility model.

[0023] In the diagram: 1. Plate truss assembly; 2. Composite node; 3. Fresh air duct;

[0024] 101. Top chord reinforcement; 102. Bottom chord reinforcement; 103. Folded reinforcement; 104. Stiffening reinforcement; 105. Lateral bonding reinforcement;

[0025] 201. Separate fixing block; 202. Guide wire; 203. Straight pipe diameter; 204. Inclined pipe diameter; 205. Vertical pipe diameter; 206. Fixed end point. Detailed Implementation

[0026] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] The present invention will be further described in detail below with reference to the accompanying drawings.

[0030] Example 1:

[0031] Please refer to the attached document carefully. Figure 1-3 It includes a plate truss assembly 1 and a composite node 2. The composite node 2 includes two symmetrically arranged split fixing blocks 201. The upper and lower ends of the plate truss assembly 1 are respectively provided with welded and fixed layers.

[0032] Each of the aforementioned plate truss groups 1 includes one upper chord 101 and two lower chord 102. Two sets of folded ribs 103 are fixed to both sides of the upper chord 101 through multiple fixing points. The folded ribs 103 are bent in the opposite direction at uniform intervals. One side of the folded rib is welded and fixed to the upper chord 101, and the outside of the fixing point is fixed to the split fixing block 201. The other side of the folded rib 103 is welded to the two lower chord 102 respectively.

[0033] The two folded ribs 103 and the two lower chord ribs 102 are symmetrically arranged about the two sides of the upper chord rib 101. Each split fixing block 201 includes two straight pipe diameters 203 in both directions, two oblique pipe diameters 204 in both directions, and a fixing end point 206. The two fixing end points 206 are fixed together by welding.

[0034] The inner wall of the straight pipe diameter 203 is an arc-shaped plate surface and is welded and fixed to the outside of the upper chord rib 101. The two straight pipe diameters 203 are symmetrically arranged about the plane of the folding point of the folding rib 103.

[0035] The folding ribs 103 located on both sides of the folding point of the upper chord rib 101 are arranged obliquely. The inner walls of the two oblique pipe diameters 204 are arc-shaped plates and are welded and fixed to the outside of the folding ribs 103. The two oblique pipe diameters 204 are symmetrically arranged about the folding plane of the folding ribs 103. The composite node 2 also includes a plurality of guide wires 202, which are bent and fixed to the upper chord rib 101, the lower chord rib 102 and the folding rib 103 respectively.

[0036] Among them, such as Figure 1 As shown, a single composite node 2 is simultaneously welded with four oblique folded ribs 103, upper chord ribs 101 at both ends, and reinforcing ribs 104 that reinforce the bottom lower chord ribs 102. At this time, the outer (upper) surfaces of the upper chord ribs 101, lower chord ribs 102, and folded ribs 103 all have weld points with the composite node 2, while the inner (lower) surfaces can be welded through guide wire ribs 202 (such as...). Figure 3(As shown) Bending inward and then adding weld points can achieve overall bending weld point reinforcement; an integrated externally wrapped welded composite node 2 is set at the bending weld point position of the non-removable steel truss, so that the outside of the truss weld point position and the connecting section become a whole, which can effectively improve the shear resistance of the weld point in multiple directions and enhance the weld point strength; and by using the segmented split fixing block 201, the folded bars 103 on both sides of the upper chord bar 101 can be reinforced at the same time. Utilizing the triangular arrangement characteristics of the truss, the single-piece split fixing block 201 can be flexibly installed at multiple different welding points. When the two split fixing blocks 201 are fixed to each other, the strength of the bending weld point can be reinforced. When used separately, it can be used to reinforce the welding strength between the folded bar 103 and the lower chord bar 102 and the lower layer plate.

[0037] Example 2:

[0038] Please see Figure 1-3 The plate truss assembly 1 includes two vertically arranged plate truss assemblies 1 and one horizontally arranged plate truss assembly 1 with the same structure. The two ends of the horizontal plate truss assembly 1 are welded and fixed to the two vertical plate truss assemblies 1 laterally.

[0039] Each folding point of the folding rib 103 is further provided with a reinforcing rib 104 which is welded perpendicularly to the lower chord rib 102. The split fixing block 201 also includes a vertical pipe diameter 205, which is welded and fixed to the outside of the reinforcing rib 104.

[0040] When the transverse bearing truss assembly 1 and the vertical bearing truss assembly 1 have the same dimensions, the upper chord 101 of the transverse bearing truss assembly 1 is laterally connected to the composite node 2 on the vertical bearing truss assembly 1, and the vertical pipe diameter 205 of the composite node 2 is fixed to the outside of the upper chord 101.

[0041] refer to Figure 2 ,contrast Figure 1 At point A1 in the middle, Figure 2 A2 represents the arrangement of composite node 2 when the structural dimensions of the transverse bearing truss group 1 and the vertical bearing truss group 1 are the same. In this case, the transverse extension length of the top chord 101 can be directly vertically reinforced by the reinforcing ribs 104 of the vertical node. The connection points are as follows: Figure 1 The bending point reinforcement position shown corresponds to the extension edge position of the upper chord rib 101. Therefore, when applied to the support weld point position, the composite node 2 can be used to cover the bending weld point position for a wrapping weld, which can further reinforce the original horizontal and vertical truss welded nodes with a traction-type surface layer. This can effectively improve the lateral support force of the vertical truss to the horizontal truss and improve the shear resistance of the original welded node, making the truss more stable.

[0042] Please refer to this carefully. Figure 2 , Figure 3 A fresh air duct 3 is installed in the vertical bearing plate truss assembly 1, and a steel pipe is provided on the outside of the fresh air duct 3 and welded and fixed to the bearing plate truss assembly 1.

[0043] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A non-removable steel truss support structure, characterized in that: It includes a plate truss assembly (1) and a composite node (2). The composite node (2) includes two symmetrically arranged split fixing blocks (201). The plate truss assembly (1) has a layer plate welded and fixed at both the upper and lower ends. Each of the aforementioned plate truss groups (1) includes one upper chord (101) and two lower chords (102). Two sets of folded bars (103) are fixed to both sides of the upper chord (101) through multiple fixing points. The folded bars (103) are bent in the opposite direction at uniform intervals. One side of the folded bar is welded and fixed to the upper chord (101), and the outside of the fixing point is fixed to the split fixing block (201). The other side of the folded bar (103) is welded to the two lower chords (102) respectively.

2. The non-removable steel truss support structure according to claim 1, characterized in that: The two folded ribs (103) and the two lower chord ribs (102) are symmetrically arranged about the two sides of the upper chord rib (101). Each split fixing block (201) includes two straight pipe diameters (203) in both directions and two oblique pipe diameters (204) in both directions, as well as a fixing end point (206). The two fixing end points (206) are fixed together by welding.

3. The non-removable steel truss support structure according to claim 2, characterized in that: The inner wall of the straight pipe diameter (203) is an arc-shaped plate surface and is welded and fixed to the outside of the upper chord rib (101). The two straight pipe diameters (203) are symmetrically arranged about the folding point of the folding rib (103).

4. The non-removable steel truss support structure according to claim 2, characterized in that: The folding bars (103) located on both sides of the folding point of the upper chord bar (101) are arranged obliquely. The inner walls of the two oblique pipe diameters (204) are arc-shaped plates and are welded and fixed to the outside of the folding bar (103). The two oblique pipe diameters (204) are symmetrically arranged about the folding plane of the folding bar (103).

5. The non-removable steel truss support structure according to claim 1, characterized in that: The plate truss assembly (1) includes two vertically arranged plate truss assemblies (1) and one horizontally arranged plate truss assembly (1) with the same structure. The two ends of the horizontal plate truss assembly (1) are welded and fixed to the two vertical plate truss assemblies (1) by a lateral connecting assembly (105). The folding point of each of the individual folded ribs (103) is also provided with a reinforcing rib (104) which is welded perpendicularly to the lower chord rib (102). The split fixing block (201) also includes a vertical pipe diameter (205), which is welded and fixed to the outside of the reinforcing rib (104).

6. The non-removable steel truss support structure according to claim 5, characterized in that: When the transverse bearing truss group (1) and the vertical bearing truss group (1) have the same dimensions, the upper chord (101) of the transverse bearing truss group (1) is laterally connected to the composite node (2) on the vertical bearing truss group (1), and the vertical pipe diameter (205) of the composite node (2) is fixed to the outside of the upper chord (101).

7. The non-removable steel truss support structure according to claim 2, characterized in that: The composite node (2) also includes a plurality of guide wires (202), which are bent and fixed to the upper chord (101), the lower chord (102) and the folded rib (103) respectively.

8. The non-removable steel truss support structure according to claim 5, characterized in that: A fresh air duct (3) is provided in the vertical bearing plate truss assembly (1), and a steel pipe is provided on the outside of the fresh air duct (3) and welded and fixed to the bearing plate truss assembly (1).

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