Large-span steel structure roof truss

Abstract

The large-span steel structure roof truss comprises a truss body and a plurality of supporting stand columns, the truss body comprises an upper beam, a lower beam, a straight web member, an inclined web member, a roof purline and a ceiling purline, the upper beam and the lower beam are each formed by double splicing of two C-shaped steel in a back-to-back mode, and ridge columns are arranged in the left-right symmetry center of the upper beam and the lower beam; a plurality of vertical reinforcing ribs are fixedly clamped between the two pieces of C-shaped steel forming the upper beam, the upper ends of the vertical reinforcing ribs extend out of the top of the upper beam, and the left side portion and the right side portion of the extending section of each vertical reinforcing rib are fixedly connected with a roof purline through bolts. According to the large-span steel structure roof truss, the assembly workload can be simplified, the steel consumption can be effectively reduced, the manufacturing cost can be obviously reduced, the light weight of the large-span steel structure roof truss can be achieved, particularly, the bearing strength can be improved, factory prefabrication production can be achieved, and transportation, disassembly, assembly and reutilization are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of large-span steel structure roof truss, belong to steel frame structure design technical field. BACKGROUND

[0002] With the continuous development of China's construction industry, steel structure has been widely used in various construction projects due to its shorter construction period, higher prefabrication degree and convenient modular construction, such as factory, warehouse, large venue, etc. In order to meet the bearing requirements of large-span steel structure roof truss, the existing large-span steel structure roof truss structure as shown in Figure 1 , including truss body 1 and a plurality of support columns 2 for supporting truss body 1, the truss body 1 includes upper beam 1-1, lower beam 1-2 and a plurality of web members 1-3 connected between upper beam 1-1 and lower beam 1-2, the web member 1-3 includes vertically arranged straight web member 1-3a and obliquely arranged inclined web member 1-3b, a plurality of roof purlins 1-4 are fixedly arranged on upper beam 1-1, a plurality of suspended ceiling purlins 1-5 are fixedly arranged on lower beam 1-2, and the upper beam 1-1 and the lower beam 1-2 are both composed of two C-shaped steel back-to-back double splicing, and a ridge column 1-6 is arranged at the left-right symmetry center of the upper beam 1-1 and the lower beam 1-2. In the prior art, as shown in Figures 2 to 4 , the connection between the upper and lower beams and the support columns 2 is achieved by welding a connecting plate A 3 on one side or both sides of the support column 2, and the connecting plate A 3 is clamped between the backs of the two C-shaped steel that constitutes the upper and lower beams, and then fixedly connected by bolts 4; and in the prior art, the connection between the web member 1-3 and the upper and lower beams is achieved by clamping a fixed connecting plate B 5 between the double-spliced C-shaped steel that constitutes the upper and lower beams 1-1, 1-2, and then fixedly connecting the upper and lower parts of the web member 1-3 with the connecting plate B 5 clamped between the double-spliced C-shaped steel that constitutes the upper and lower beams, thereby indirectly achieving fixed connection with the upper and lower beams; in addition, in the prior art, the fixed connection between the roof purlin 1-4 and the upper beam 1-1 and the fixed connection between the suspended ceiling purlin 1-5 and the lower beam 1-2 are achieved by an angle iron fixing member 6; in addition, the connection between the left and right parts of the upper beam 1-1 and the lower beam 1-2 and the ridge column 1-6 is achieved by welding a connecting plate C 7 on both sides of the upper and lower sections of the ridge column 1-6, and the connecting plate C 7 is clamped between the backs of the two C-shaped steel that constitutes the upper and lower beams, and then fixedly connected by bolts 4.

[0003] Obviously, the prior art needs a large number of connecting plates A 3, connecting plates B 5, angle iron fixing members 6 and connecting plates C 7 to construct the large-span steel structure roof truss, which not only has many problems such as large amount of steel, high cost, large self-weight, complex assembly operation and the like, but also has unreliable connection strength, increases the complexity of prefabrication and reduces the efficiency of on-site assembly; especially, welding is required at multiple positions, which not only has high welding cost, but also is inconvenient to disassemble after the end of the use period, resulting in low recycling value. Content of the utility model

[0004] In view of the above problems existing in the prior art, the purpose of the utility model is to provide a large-span steel structure roof truss which can obviously reduce the amount of steel, is convenient for on-site assembly, can realize full-plant prefabrication, is convenient for transportation, has reliable connection strength and can be recycled.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A large-span steel structure roof truss, comprising a truss body and a plurality of support columns for supporting the truss body, the truss body comprising an upper beam, a lower beam and a plurality of web members connected between the upper beam and the lower beam, the web members comprising vertical straight web members and oblique web members, a plurality of roof purlins are fixedly arranged on the upper beam at intervals, a plurality of suspended ceiling purlins are fixedly arranged on the lower beam at intervals, and the upper beam and the lower beam are both formed by two C-shaped steels which are double-pasted back to back, and a ridge column is arranged at the center of the left-right symmetry of the upper beam and the lower beam; characterized in that a plurality of vertical reinforcing ribs are fixedly arranged between the two C-shaped steels forming the upper beam, the upper end of the vertical reinforcing rib extends out of the top of the upper beam, and the left / right side of the extending section of each vertical reinforcing rib is fixedly connected with a roof purlin through a bolt.

[0007] In an embodiment, the roof purlin is in a Z-shaped form, and the left / right side of the extending section of the vertical reinforcing rib is fixedly connected with the vertical part of the Z-shaped roof purlin through a bolt.

[0008] In a preferred embodiment, the height of the extending section of the vertical reinforcing rib is adapted to the height of the vertical part of the Z-shaped roof purlin.

[0009] In a preferred embodiment, the vertical reinforcing rib is formed by rectangular steel or C-shaped steel.

[0010] In an embodiment, the front and back sides of the lower section of the vertical reinforcing rib are fixedly connected with the back of the two C-shaped steels forming the upper beam through a bolt.

[0011] In an embodiment, the upper end of the straight web member is fixedly arranged between the two C-shaped steels forming the upper beam, the lower end of the straight web member is passed out of the two C-shaped steels forming the lower beam, and the left / right side of the passing-out section of each straight web member is fixedly connected with a suspended ceiling purlin through a bolt.

[0012] One embodiment, the purlin is in C shape, the left / right side of the straight web member is fixedly connected with the back of the C-shaped purlin by bolts.

[0013] One preferred embodiment, the straight web member is made of rectangular steel or C-shaped steel.

[0014] One embodiment, the front and back side of the straight web member is fixedly connected with the back of the C-shaped steel constituting the upper and lower beams by bolts.

[0015] One embodiment, the upper end of the diagonal web member is clamped and fixed between two C-shaped steels constituting the upper beam, and the lower end of the diagonal web member is clamped and fixed between two C-shaped steels constituting the lower beam.

[0016] One preferred embodiment, the diagonal web member is made of rectangular steel or C-shaped steel.

[0017] One embodiment, the front and back side of the diagonal web member is fixedly connected with the back of the C-shaped steel constituting the upper and lower beams by bolts.

[0018] One embodiment, the upper end of the support column is clamped and fixed between two C-shaped steels constituting the upper beam, the lower end of the support column is downwardly penetrated between two C-shaped steels constituting the lower beam, and the front and back side of the support column is fixedly connected with the back of the C-shaped steel constituting the upper and lower beams by bolts.

[0019] One preferred embodiment, the support column is made of rectangular steel, H-shaped steel or I-shaped steel.

[0020] One embodiment, the upper end of the ridge column is clamped and fixed between two C-shaped steels constituting the upper beam, the lower end of the ridge column is clamped and fixed between two C-shaped steels constituting the lower beam, and the front and back side of the ridge column is fixedly connected with the back of the C-shaped steel constituting the upper and lower beams by bolts.

[0021] One preferred embodiment, the ridge column is made of rectangular steel, H-shaped steel or I-shaped steel.

[0022] Compared with the prior art, the beneficial technical effects of the utility model lie in:

[0023] The utility model discloses a clever structure design can make the construction of large-span steel structure roof truss dispense with numerous connecting plate and angle iron fixing spare, not only can greatly simplify assembly workload, can realize full bolt connection, and can effectively reduce steel consumption, can obviously reduce manufacturing cost, and can realize lightweight of large-span steel structure roof truss, especially can improve bearing strength, be favorable to realize factory prefabricated production, convenient transportation and dismounting and reuse, can obviously improve the processing and assembly efficiency and dismounting and reuse value of large-span steel structure roof truss, therefore, the utility model discloses relative prior art, have very strong practicality and remarkable economic value. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the structure schematic diagram of prior art large-span steel structure roof truss;

[0025] Figure 2 It is the local structure schematic diagram of prior art large-span steel structure roof truss left side portion;

[0026] Figure 3 It is the local structure schematic diagram of prior art large-span steel structure roof truss middle portion;

[0027] Figure 4 It is the local structure schematic diagram of prior art large-span steel structure roof truss right side portion;

[0028] Figure 5 It is the structure schematic diagram of large-span steel structure roof truss provided by the embodiment;

[0029] Figure 6 It is the local structure schematic diagram of large-span steel structure roof truss left side portion provided by the embodiment;

[0030] Figure 7 It is the local structure schematic diagram of large-span steel structure roof truss middle portion provided by the embodiment;

[0031] Figure 8 It is the local structure schematic diagram of large-span steel structure roof truss right side portion provided by the embodiment;

[0032] The figure mark is as follows: 1, truss body;1-1, upper beam;1-2, lower beam;1-3, web;1-3a, straight web;1-3b, inclined web;1-4, roof purlin;1-5, suspended ceiling purlin;1-6, ridge column;2, support column;3, connecting plate A;4, bolt;5, connecting plate B;6, angle iron fixing spare;7, connecting plate C;8, vertical reinforcing bar. DETAILED DESCRIPTION

[0033] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Furthermore, it should be noted that the terminology used in this utility model is for the purpose of describing specific embodiments only and is not intended to limit the utility model. Unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by those skilled in the art. Terms such as "inner," "outer," "upper," "lower," "front," "rear," "left," and "right," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0034] Example

[0035] Please see Figure 5 As shown in the figure, this embodiment provides a large-span steel roof truss, including a truss body 1 and multiple supporting columns 2 for supporting the truss body 1. The truss body 1 includes an upper beam 1-1, a lower beam 1-2, and multiple web members 1-3 connecting the upper beam 1-1 and the lower beam 1-2. The web members 1-3 include vertically arranged straight web members 1-3a and diagonally arranged diagonal web members 1-3b. Multiple roof purlins 1-4 are fixed at intervals on the upper beam 1-1, and multiple ceiling purlins 1-5 are fixed at intervals on the lower beam 1-2. Furthermore, both the upper beam 1-1 and the lower beam 1-2 are constructed by back-to-back double splicing of two C-shaped steel beams. Ridge columns 1-6 are provided at the left and right symmetrical centers of the upper beam 1-1 and the lower beam 1-2. In this embodiment, the roof purlins 1-4 are Z-shaped, and the ceiling purlins 1-5 are C-shaped.

[0036] Please see again. Figures 6 to 8 As shown, in this embodiment, multiple vertical reinforcing ribs 8 are clamped and fixed between the two C-shaped steels constituting the upper beam 1-1. The upper end of the vertical reinforcing rib 8 extends out of the top of the upper beam 1-1, and the left / right side of the extended section of each vertical reinforcing rib 8 is fixedly connected to the vertical part of the Z-shaped roof purlin 1-4 by bolts 4.

[0037] This utility model not only greatly enhances the load-bearing strength of the upper beam 1-1 by clamping and fixing multiple vertical reinforcing ribs 8 between the two C-shaped steels constituting the upper beam 1-1, but can also be used to fix the roof purlins 1-4 at the same time, thus eliminating the need for a large number of angle iron fasteners used to fix the roof purlins 1-4 in the prior art.

[0038] As a preferred option, the vertical reinforcing rib 8 is made of rectangular steel or C-shaped steel, which facilitates prefabrication and assembly.

[0039] In addition, the front and rear sides of the lower section of the vertical reinforcing rib 8 are fixedly connected to the backs of the two C-shaped steels that form the upper beam 1-1 adjacent to it by bolts 4. This facilitates disassembly and assembly, simplifies assembly operations, and is conducive to recycling.

[0040] As a preferred embodiment, the height of the extended section of the vertical reinforcing rib 8 is matched with the height of the vertical portion of the Z-shaped roof purlins 1-4. Please refer to [link / reference]. Figure 6 As shown, this ensures better support and fixation strength for the roof purlins 1-4.

[0041] In this embodiment, the upper end of the straight web member 1-3a is clamped and fixed between the two C-shaped steels constituting the upper beam 1-1, and the lower end of the straight web member 1-3a protrudes between the two C-shaped steels constituting the lower beam 1-2. The left / right sides of the protruding section of each straight web member 1-3a are fixedly connected to the back of the C-shaped ceiling purlin 1-5 by bolts 4. This invention allows the lower end of the straight web member 1-3a to protrude from the bottom of the lower beam 1-2, enabling the protruding section to simultaneously fix the ceiling purlin 1-5, thereby eliminating the need for numerous angle iron fasteners used in the prior art to fix the ceiling purlin 1-5.

[0042] As a preferred option, the straight web members 1-3a are made of rectangular steel or C-shaped steel, which facilitates prefabrication and assembly.

[0043] In this embodiment, the front and rear sides of the straight web member 1-3a are respectively fixedly connected to the back of the C-shaped steel that forms the upper and lower beams adjacent to it by bolts 4. This design not only eliminates the need for a large number of connecting plates B 5 used to fix the straight web member 1-3a in the prior art, but also enhances the connection strength between the straight web member 1-3a and the upper and lower beams, which is beneficial to improving the load-bearing strength of the upper and lower beams.

[0044] In addition, in this embodiment, the upper end of the diagonal web member 1-3b is clamped and fixed between the two C-shaped steels constituting the upper beam 1-1, and the lower end of the diagonal web member 1-3b is clamped and fixed between the two C-shaped steels constituting the lower beam 1-2. The front and rear sides of the diagonal web member 1-3b are respectively fixedly connected to the back of the adjacent C-shaped steels constituting the upper and lower beams by bolts 4. This design not only eliminates the need for a large number of connecting plates B 5 used to fix the diagonal web member 1-3b in the prior art, but also enhances the connection strength between the diagonal web member 1-3b and the upper and lower beams, which is beneficial to improving the load-bearing strength of the upper and lower beams.

[0045] As a preferred option, the diagonal web members 1-3b are made of rectangular steel or C-shaped steel, which facilitates prefabrication and assembly.

[0046] Furthermore, in this embodiment, the upper end of the support column 2 is clamped and fixed between the two C-shaped steels constituting the upper beam 1-1, and the lower end of the support column 2 extends downward through the two C-shaped steels constituting the lower beam 1-2. The front and rear sides of the support column 2 are respectively fixedly connected to the back of the C-shaped steels constituting the upper and lower beams adjacent to it by bolts 4. This design not only eliminates the need for multiple connecting plates A 3 used to fix the support column 2 in the prior art, but also eliminates the welding operation and ensures the connection strength between the support column 2 and the upper and lower beams.

[0047] As a preferred option, the support column 2 is made of rectangular steel, H-beam steel or I-beam steel. Although rectangular steel is shown in the figure, H-beam steel or I-beam steel can also be used, as long as the two connecting surfaces of the H-beam steel or I-beam steel are placed in the front-back direction.

[0048] Furthermore, in this embodiment, the upper end of the spine column 1-6 is clamped and fixed between the two C-shaped steels constituting the upper beam 1-1, and the lower end of the spine column 1-6 is clamped and fixed between the two C-shaped steels constituting the lower beam 1-2. The front and rear sides of the spine column 1-6 are respectively fixedly connected to the back of the adjacent C-shaped steels constituting the upper and lower beams by bolts 4. This design not only eliminates the need for multiple connecting plates C 7 used to fix the spine column 1-6 in the prior art, but also eliminates the welding operation, and ensures the connection strength between the spine column 1-6 and the upper and lower beams.

[0049] As a preferred embodiment, the spine columns 1-6 are made of rectangular steel, H-beams or I-beams. Although rectangular steel is shown in the figure, H-beams or I-beams can also be used, as long as the two connecting surfaces of the H-beams or I-beams are placed in the front-back direction.

[0050] As can be seen from the above, this utility model, through its ingenious structural design, eliminates the need for numerous connecting plates and angle iron fasteners in the construction of large-span steel roof trusses. This not only greatly simplifies the assembly process and enables all-bolted connections, but also effectively reduces steel consumption, significantly lowering manufacturing costs and achieving lightweighting of large-span steel roof trusses. Furthermore, it enhances load-bearing strength, facilitates factory prefabrication, and makes transportation, disassembly, and reuse easier. This significantly improves the processing and assembly efficiency and the reuse value of large-span steel roof trusses. Therefore, compared to existing technologies, this utility model possesses strong practicality and significant economic value.

[0051] Finally, it should be pointed out that the above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A large-span steel roof truss, comprising a truss body and multiple supporting columns for supporting the truss body, wherein the truss body includes an upper beam, a lower beam, and multiple web members connecting the upper beam and the lower beam, the web members including vertically arranged straight web members and diagonally arranged diagonal web members, multiple roof purlins are fixedly fixed at intervals on the upper beam, and multiple ceiling purlins are fixedly fixedly fixedly on the lower beam at intervals, and both the upper beam and the lower beam are constructed by two C-shaped steel beams back-to-back, with a ridge column located at the left and right symmetrical centers of the upper beam and the lower beam; characterized in that: Multiple vertical reinforcing ribs are clamped and fixed between the two C-shaped steel beams that form the upper beam. The upper ends of the vertical reinforcing ribs extend beyond the top of the upper beam, and the left / right sides of the extended section of each vertical reinforcing rib are fixedly connected to a roof purlin by bolts.

2. The large-span steel roof truss according to claim 1, characterized in that: The vertical stiffeners are made of rectangular steel or C-shaped steel, and the front and rear sides of the lower section of the vertical stiffeners are fixedly connected to the backs of the two adjacent C-shaped steels that form the upper beam by bolts.

3. The large-span steel roof truss according to claim 1, characterized in that: The roof purlin is Z-shaped, and the left / right sides of the extended section of the vertical reinforcing rib are fixedly connected to the vertical part of the Z-shaped roof purlin by bolts.

4. The large-span steel roof truss according to claim 1, characterized in that: The upper end of the straight web member is clamped and fixed between the two C-shaped steels that form the upper beam, and the lower end of the straight web member passes through the two C-shaped steels that form the lower beam. The left / right side of the protruding section of each straight web member is fixedly connected to a ceiling purlin by bolts.

5. The large-span steel roof truss according to claim 4, characterized in that: The ceiling purlin is C-shaped, and the left / right sides of the straight web rod protruding section are fixedly connected to the back of the C-shaped ceiling purlin by bolts.

6. The large-span steel roof truss according to claim 4, characterized in that: The straight web member is made of rectangular steel or C-shaped steel, and the front and rear sides of the straight web member are respectively fixedly connected to the back of the C-shaped steel that forms the upper and lower beams by bolts.

7. The large-span steel roof truss according to claim 1, characterized in that: The upper end of the diagonal web member is clamped and fixed between the two C-shaped steels that form the upper beam, and the lower end of the diagonal web member is clamped and fixed between the two C-shaped steels that form the lower beam.

8. The large-span steel roof truss according to claim 7, characterized in that: The diagonal web members are made of rectangular steel or C-shaped steel, and the front and rear sides of the diagonal web members are respectively fixedly connected to the back of the C-shaped steel that forms the upper and lower beams by bolts.

9. The large-span steel roof truss according to claim 1, characterized in that: The upper end of the support column is clamped and fixed between the two C-shaped steels that form the upper beam, and the lower end of the support column extends downward through the two C-shaped steels that form the lower beam. The front and rear sides of the support column are respectively fixedly connected to the back of the adjacent C-shaped steels that form the upper and lower beams by bolts.

10. The large-span steel roof truss according to claim 1, characterized in that: The upper end of the spine column is clamped and fixed between the two C-shaped steels that form the upper beam, and the lower end of the spine column is clamped and fixed between the two C-shaped steels that form the lower beam. The front and rear sides of the spine column are respectively fixedly connected to the back of the adjacent C-shaped steels that form the upper and lower beams by bolts.

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