A reinforcement structure and reinforcement method for lifting large-span multi-trusses

Abstract

The present invention discloses a reinforcement structure and reinforcement method for lifting a large-span multi-span truss, which are applied to the large-span multi-span truss. The reinforcement structure includes a reinforcement unit, which is provided with a plurality of reinforcement units and is spaced apart along the length direction of the large-span multi-span truss. The reinforcement unit includes an outer frame, which includes a plurality of outer frame rods. The outer frame rods are used to connect two adjacent chord rods. In each reinforcement unit, a plurality of outer frame rods are connected end to end, or a plurality of outer frame rods are connected end to end with web rods to close the outer frame. The reinforcement structure for lifting the large-span multi-span truss is installed inside the large-span multi-span truss. Each outer frame rod can support a single truss, distributing the load during lifting from the lifting lifting point to the chord rods or web rods of the single truss, thereby preventing stress concentration at the lifting lifting point and reducing deformation at the lifting lifting point.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and in particular to a reinforcement structure and a reinforcement method for lifting large-span multi-trusses. Background Art

[0002] In recent years, an increasing number of buildings with exceptionally long spans and cantilevers have adopted all-steel structural designs. To meet the functional requirements of these structures, truss structures have also been widely adopted in steel buildings, creating complex structural systems consisting of multiple trusses. These structures are typically located at high altitudes, and to reduce the need for temporary supports, most installation methods utilize a "ground-based in-situ assembly followed by overall lifting" method. However, for large-span, multi-truss structures, due to their large span and weight, stress concentration can easily occur at the lifting points during the overall lifting process, leading to truss deformation or even damage. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a reinforcement structure for lifting large-span multi-span trusses, which can reduce the deformation occurring during the lifting process of large-span multi-span trusses.

[0004] The present invention also proposes a method for reinforcing a large-span multi-truss lifting structure applied to the above-mentioned large-span multi-truss lifting reinforcement structure.

[0005] A first aspect of the present invention provides a reinforcement structure for lifting large-span multi-span trusses, which is applied to large-span multi-span trusses. Multiple single-span trusses are assembled to form the large-span multi-span trusses, and a hollow structure is formed inside the large-span multi-span trusses. The single-span trusses include multiple chords arranged side by side along the length direction of the large-span multi-span trusses, and at least some adjacent chords are connected by webs. The reinforcement unit is provided with multiple chords and is spaced apart along the length direction of the large-span multi-span trusses. The reinforcement unit includes an outer frame, which includes several outer frame rods. The outer frame rods are used to connect two adjacent chords. In each of the reinforcement units, multiple outer frame rods are connected end to end, or multiple outer frame rods are connected end to end with the webs to close the outer frame.

[0006] The first aspect of the present invention provides a reinforcement structure for lifting large-span multi-trusses, which has at least the following beneficial effects: the reinforcement structure for lifting large-span multi-trusses is installed inside the large-span multi-trusses, and each outer frame rod can support a single truss, dispersing the load during lifting from the lifting point to the chord or web of the single truss, thereby preventing stress concentration at the lifting point and reducing deformation at the lifting point.

[0007] In some embodiments of the present invention, the plurality of reinforcement units are disposed at the ends and the center of the large-span multi-frame trusses.

[0008] In some embodiments of the present invention, the outer frame rod is located in the vertical plane of the single truss, and the outer frame rod is perpendicular to the chord rod.

[0009] In some embodiments of the present invention, both ends of the outer frame rod are respectively connected to two adjacent chord rods in the same single truss.

[0010] In some embodiments of the present invention, one end of the outer frame rod is connected to the chord rod, and the other end of the outer frame rod is connected to the web rod.

[0011] In some embodiments of the present invention, the reinforcement unit further includes a diagonal brace, which is located inside the outer frame, and is tilted relative to the outer frame rod. The two ends of the diagonal brace are respectively connected to the two opposite outer frame rods; or the two ends of the diagonal brace are respectively connected to the opposite outer frame rod and the web rod; or the two ends of the diagonal brace are respectively connected to the two opposite web rods.

[0012] In some embodiments of the present invention, the reinforcement unit further includes a straight strut, which is located inside the outer frame, and the two ends of the straight strut are respectively vertically connected to the two opposite outer frame rods; or the two ends of the straight strut are respectively vertically connected to the opposite outer frame rods and the web rods; or the two ends of the straight strut are respectively vertically connected to the two opposite web rods; or the two ends of the straight strut are respectively vertically connected to the two opposite chord rods.

[0013] The second aspect of the present invention provides a reinforcement method for lifting a large-span multi-span truss, which includes the following steps: setting multiple lifting points on the large-span multi-span truss; and installing the reinforcement structure for lifting the large-span multi-span truss inside the large-span multi-span truss at the lifting points.

[0014] The second aspect of the present invention provides a reinforcement method for lifting large-span multi-span trusses, which has at least the following beneficial effects: multiple lifting points are set on large-span multi-span trusses, which can disperse the forces at each lifting point, and a reinforcement structure for lifting large-span multi-span trusses is installed at the lifting points, which can increase the strength of the lifting points, prevent stress concentration, and reduce deformation at the lifting points.

[0015] In some embodiments of the present invention, the steps of installing the reinforcement structure for lifting the large-span multi-span trusses include: if the large-span multi-span trusses at the lifting points have webs, first connecting the outer frame rods with the webs and the chords to complete the closed outer frame; if the large-span multi-span trusses at the lifting points do not have webs, first connecting the outer frame rods with the chords in sequence to form the closed outer frame.

[0016] In some embodiments of the present invention, the step of installing the large-span multi-truss lifting reinforcement structure includes: installing diagonal braces and straight braces inside the outer frame.

[0017] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0019] Figure 1 A front view of a large-span multi-frame truss used in some embodiments of the present invention;

[0020] Figure 2 for Figure 1 The left side view of the long-span multi-beam truss shown;

[0021] Figure 3 for Figure 1 The rear view of the long-span multi-beam truss shown;

[0022] Figure 4 for Figure 1 The right side view of the long-span multi-beam truss shown;

[0023] Figure 5 for Figure 1 Schematic diagram of the long-span multi-truss reinforcement structure at the middle AA section;

[0024] Figure 6 for Figure 1 Schematic diagram of the long-span multi-truss reinforcement structure at the middle BB section;

[0025] Figure 7 for Figure 1 Schematic diagram of the long-span multi-truss reinforcement structure at the mid-CC section.

[0026] Figure 8 for Figure 1 A schematic diagram of an outer frame rod of a large-span multi-truss reinforcement structure of a large-span multi-truss is shown;

[0027] Figure 9 for Figure 1 A schematic diagram of an outer frame rod of a large-span multi-truss reinforcement structure of a large-span multi-truss is shown;

[0028] Figure 10 for Figure 1 A schematic diagram of an outer frame rod of a large-span multi-truss reinforcement structure of a large-span multi-truss is shown;

[0029] Figure 11 for Figure 1 The diagram shown is a schematic diagram of the outer frame rods of the large-span multi-truss reinforcement structure.

[0030] Reference numerals:

[0031] Reinforcement unit 100, outer frame 110, outer frame rod 111, diagonal bracing rod 120, straight bracing rod 130, large-span multi-span truss 200, single-span truss 210, chord 211, web 212, lifting point 220. DETAILED DESCRIPTION

[0032] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0033] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0034] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0035] In the description of the present invention, reference to terms such as "one embodiment" or "some embodiments" means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0036] The first embodiment of the present invention provides a reinforcement structure for lifting a large-span multi-span truss, which is applied to a large-span multi-span truss 200. A plurality of single-span trusses 210 are assembled to form the large-span multi-span truss 200, and a hollow structure is formed inside the large-span multi-span truss 200. The single-span truss 210 includes a plurality of chords 211 arranged side by side along the length direction of the large-span multi-span truss 200, and at least some of the adjacent chords 211 are connected by webs 212. The reinforcement structure for lifting multiple trusses includes a reinforcement unit 100, which is provided in plurality and spaced apart along the length direction of the large-span multiple trusses 200. The reinforcement unit 100 includes an outer frame 110, and the outer frame 110 includes a plurality of outer frame rods 111. The outer frame rods 111 are used to connect two adjacent chord rods 211. In each reinforcement unit 100, multiple outer frame rods 111 are connected end to end, or multiple outer frame rods 111 are connected end to end with the web rods 212 to close the outer frame 110.

[0037] For example, refer to Figures 1 to 4 The long-span multi-span truss 200 is formed by assembling multiple single-span trusses 210. The interior of the long-span multi-span truss 200 forms a hollow structure. The single-span trusses 210 include multiple chords 211 arranged side by side along the length direction of the long-span multi-span truss 200. At least some adjacent chords 211 are connected by webs 212. Figures 5 to 7 As shown, the reinforcement unit 100 includes an outer frame 110, and the outer frame 110 includes a plurality of outer frame rods 111. The outer frame rods 111 are used to connect two adjacent chord rods 211. In each reinforcement unit 100, Figure 5 , multiple outer frame rods 111 are connected end to end, or refer to Figure 6 and Figure 7 Multiple outer frame rods 111 are connected end to end with web members 212 to close the outer frame 110. A reinforcement structure for lifting the large-span multi-span truss is installed inside the large-span multi-span truss 200. Each outer frame rod 111 can support a single truss 210, distributing the load during lifting from the lifting point to the chords or web members of the single truss, thereby preventing stress concentration at the lifting point and reducing deformation at the lifting point.

[0038] It is understandable that the connection positions of the two ends of the outer frame rod 111 can be adaptively adjusted according to the different installation positions of the reinforcement unit 100. For example, referring to Figure 8 and Figure 9 The single truss 210 has an inclined cross web 212, and the installation position of the reinforcement unit 100 coincides with the intersection of the two webs 212. Therefore, one end of the outer frame rod 111 can be connected to the chord 211, and the other end can be connected to the intersection of the two webs 212; Figure 10 , one end of the outer frame rod 111 can be connected to the chord rod 211, and the other end can be connected to the web rod 212; Figure 11Alternatively, the ends of the outer frame rod 111 may be connected to different chord rods 211 within the same single truss 210, etc., and may be configured according to actual needs as long as the outer frame 110 can be closed. The rods may be connected by welding, bolting, or the like.

[0039] It should be noted that the multiple reinforcement units 100 are respectively provided at the ends and the center of the large-span multi-frame trusses 200 .

[0040] Multiple reinforcement units 100 are respectively arranged at the ends and the middle of the large-span multi-span trusses 200. The reinforcement units 100 arranged at both ends of the large-span multi-span trusses 200 can provide support for the ends of the large-span multi-span trusses 200, and can reduce the deformation of the end openings of the large-span multi-span trusses 200; the reinforcement units 100 arranged in the middle can provide support for the middle part of the large-span multi-span trusses 200, and can reduce the downward bending deformation in the middle part due to the large span and heavy weight of the large-span multi-span trusses 200 during the overall lifting process.

[0041] It should be noted that the outer frame rod 111 is located in the vertical plane of the single truss 210 , and the outer frame rod 111 is perpendicular to the chord rod 211 .

[0042] For example, Figures 8 to 11 As shown, the outer frame rod 111 is located in the vertical surface of the single truss 210. The outer frame rod 111 can provide support for the vertical surface of the single truss 210. The outer frame rod 111 is perpendicular to the chord 211. During the lifting process, the large-span multi-truss 200 is subjected to the vertical downward gravity. The outer frame rod 111 is perpendicular to the chord 211, which can better transfer the load, prevent stress concentration, and reduce deformation.

[0043] It should be noted that both ends of the outer frame rod 111 are respectively connected to two adjacent chord rods 211 in the same single truss 210 .

[0044] For example, Figure 11 As shown, both ends of the outer frame rod 111 are respectively connected to two adjacent chord rods 211 in the same single truss 210. The outer frame rod 111 can provide support for the two adjacent chord rods 211, disperse the load during lifting, and reduce deformation during the lifting process.

[0045] It should be noted that one end of the outer frame rod 111 is connected to the chord rod 211 , and the other end of the outer frame rod 111 is connected to the web rod 212 .

[0046] For example, Figures 8 to 10 One end of the outer frame rod 111 is connected to the chord rod 211, and the other end of the outer frame rod 111 is connected to the web rod 212. The outer frame rod 111 can transfer the load on the chord rod 211 to the web rod 212 to prevent stress concentration on the chord rod 211. Figure 8 and Figure 9The single truss 210 has an inclined cross web 212, and the installation position of the reinforcement unit 100 coincides with the intersection of the two webs 212. Therefore, one end of the outer frame rod 111 can be connected to the chord 211, and the other end can be connected to the intersection of the two webs 212; Figure 10 , one end of the outer frame rod 111 can be connected to the chord rod 211 , and the other end can be connected to the web rod 212 .

[0047] It should be noted that the reinforcement unit 100 also includes a diagonal brace 120, which is located inside the outer frame 110. The diagonal brace 120 is tilted relative to the outer frame rod 111, and the two ends of the diagonal brace 120 are respectively connected to two opposite outer frame rods 111; or the two ends of the diagonal brace 120 are respectively connected to the opposite outer frame rods 111 and the web rod 212; or the two ends of the diagonal brace 120 are respectively connected to two opposite web rods 212.

[0048] For example, Figures 5 to 7 As shown, the reinforcement unit 100 further includes a diagonal brace 120, which is located inside the outer frame 110 and is tilted relative to the outer frame rods 111. The ends of the diagonal brace 120 are respectively connected to two opposing outer frame rods 111; or the ends of the diagonal brace 120 are respectively connected to opposing outer frame rods 111 and web members 212; or the ends of the diagonal brace 120 are respectively connected to two opposing web members 212. The combination of the diagonal brace 120, the chord members 211, the web members 212, and the outer frame rods 111 can form a triangular structure, which can improve the stability of the outer frame 110 and enhance the reinforcement effect.

[0049] It should be noted that the reinforcement unit 100 also includes a straight support rod 130, which is located inside the outer frame 110, and the two ends of the straight support rod 130 are respectively vertically connected to the two opposite outer frame rods 111; or the two ends of the straight support rod 130 are respectively vertically connected to the opposite outer frame rods 111 and the web rods 212; or the two ends of the straight support rod 130 are respectively vertically connected to the two opposite web rods 212; or the two ends of the straight support rod 130 are respectively vertically connected to the two opposite chord rods 211.

[0050] For example, Figures 5 to 7 As shown, the reinforcement unit 100 further includes a straight support rod 130, which is located inside the outer frame 110. Figure 5 and Figure 6 , the two ends of the straight support rod 130 are respectively connected to the two opposite chord rods 211, and the straight support rod 130 is perpendicular to the chord rod 211; Figure 7The ends of the straight brace 130 are respectively connected to two opposite web members 212, and the straight brace 130 is perpendicular to the web members 212. The straight brace 130 can provide vertical support. During the lifting process, the large-span multi-frame trusses 200 are subjected to the vertical downward force of gravity. The straight brace 130 can effectively transfer the load, prevent stress concentration, and reduce deformation.

[0051] It can be understood that the two ends of the straight support rod 130 can also be respectively connected to two opposite outer frame rods 111, or opposite outer frame rods 111 and web rods 212, and the straight support rod 130 is perpendicular to the connected outer frame rod 111 or web rod 212 or chord rod 211, and the position of the straight support rod 130 can be set according to actual needs.

[0052] It can be understood that the above-mentioned interconnected rods, such as the chord 211 and the outer frame rod 111, the web 212 and the outer frame rod 111, the diagonal support rod 120 and the chord 211, the straight support rod 130 and the chord 211, etc., can all be rods with the same cross-section, which is convenient for positioning during welding, and the weld is located on the outer surface to facilitate welding operations.

[0053] The second aspect of the present invention provides a reinforcement method for lifting a large-span multi-span truss, the steps of which include: setting multiple lifting points 220 on the large-span multi-span truss 200; and installing a reinforcement structure for lifting a large-span multi-span truss provided by any of the above embodiments inside the large-span multi-span truss 200 at the lifting points 220.

[0054] Providing multiple lifting points 220 on the large-span multi-frame trusses 200 can disperse the forces at each lifting point 220 , and installing a reinforcement structure for lifting the large-span multi-frame trusses at the lifting points 220 can increase the strength of the lifting points 220 , prevent stress concentration, and reduce deformation at the lifting points 220 .

[0055] It is understandable that there is no limit to the number of lifting points 220 provided at each location, and the number can be set according to actual needs. For example, Figure 1 , three lifting points 220 can be set at both ends of the large-span multi-frame truss 200, and six lifting points 220 can be set in the middle. The number of lifting points 220 in the middle is the same as the total number of lifting points 220 at both ends, so the force is more balanced, which can reduce bending deformation during the lifting process.

[0056] It should be noted that the steps of installing the reinforcement structure for lifting large-span multi-span trusses include: if the large-span multi-span trusses 200 at the lifting point 220 have web members 212, first connect the outer frame rods 111 with the web members 212 and the chord rods 211 to complete the closed outer frame 110; if the large-span multi-span trusses 200 at the lifting point 220 do not have web members 212, first connect the outer frame rods 111 with the chord rods 211 in sequence to form a closed outer frame 110.

[0057] For example, Figures 6 and 7 As shown, the long-span multi-frame truss 200 at the lifting point 220 has a web member 212, so the outer frame rod 111 is first connected to the web member 212 and the chord member 211 to complete the closed outer frame 110, and then the diagonal bracing rods 120 and the straight bracing rods 130 are installed inside the outer frame 110. Figure 5 As shown, the large-span multi-frame truss 200 at the lifting point 220 does not have a web member 212, so the outer frame rod 111 and the chord rod 211 are first connected in sequence to form a closed outer frame 110, and then the diagonal support rods 120 and the straight support rods 130 are installed inside the outer frame 110.

[0058] It should be noted that the steps of installing the large-span multi-truss lifting reinforcement structure include: installing the diagonal bracing rods 120 and the straight bracing rods 130 inside the outer frame 110 .

[0059] For example, Figures 5 to 7 As shown, the diagonal braces 120, combined with the chords 211, web members 212, and outer frame rods 111, form a triangular structure, which improves the stability and reinforcement of the outer frame 110. The straight braces 130 provide vertical support. During the lifting process, the long-span multi-frame trusses 200 are subjected to the vertical downward force of gravity. The straight braces 130 can effectively transfer the load, prevent stress concentration, and reduce deformation.

[0060] It is understandable that the installation order of the above-mentioned diagonal support rods 120 and straight support rods 130 is not limited and can be installed according to actual needs.

[0061] While the embodiments of the present invention have been described in detail above with reference to the accompanying drawings, the present invention is not limited to the embodiments described above. Various modifications may be made within the scope of knowledge possessed by a person skilled in the art without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof may be combined with one another unless there is a conflict.

Claims

1. A reinforcement structure for lifting a large-span multi-span truss, applied to a large-span multi-span truss, wherein a plurality of single-span trusses are assembled to form the large-span multi-span truss, and a hollow structure is formed inside the large-span multi-span truss. The single-span truss includes a plurality of chords arranged side by side along the length direction of the large-span multi-span truss, at least some of the adjacent chords are connected by webs, and the single-span truss has cross-inclined webs, characterized in that: include: A plurality of reinforcement units are provided and are spaced apart along the length direction of the large-span multi-frame trusses, wherein the reinforcement units include an outer frame, the outer frame includes a plurality of outer frame rods, the outer frame rods are used to connect two adjacent chords, the outer frame rods are located in the vertical plane of the single-frame truss, the outer frame rods are perpendicular to the chords, one end of the outer frame rod is connected to the chord, and the other end of the outer frame rod is connected to the web, or the other end of the outer frame rod is connected to the intersection of two webs, or the two ends of the outer frame rod are respectively connected to two adjacent chords in the same single-frame truss; In each of the reinforcement units, a plurality of the outer frame rods are connected end to end, or a plurality of the outer frame rods and the web rods are connected end to end, so that the outer frame is closed.

2. A large-span multi-truss lifting reinforcement structure according to claim 1, characterized in that: The plurality of reinforcement units are respectively arranged at the ends and the center of the large-span multi-frame trusses.

3. The large-span multi-truss lifting reinforcement structure according to claim 1 is characterized in that: The reinforcement unit also includes a diagonal brace, which is located inside the outer frame and is inclined relative to the outer frame rod. The two ends of the diagonal brace are respectively connected to two opposite outer frame rods; or the two ends of the diagonal brace are respectively connected to the opposite outer frame rod and the web rod; or the two ends of the diagonal brace are respectively connected to two opposite web rods.

4. The reinforcement structure for lifting large-span multiple trusses according to claim 1 is characterized in that: The reinforcement unit also includes a straight strut, which is located inside the outer frame, and the two ends of the straight strut are respectively vertically connected to the two opposite outer frame rods; or the two ends of the straight strut are respectively vertically connected to the opposite outer frame rods and the web rods; or the two ends of the straight strut are respectively vertically connected to the two opposite web rods; or the two ends of the straight strut are respectively vertically connected to the two opposite chord rods.

5. A reinforcement method for lifting large-span multi-trusses, characterized in that the steps include: A plurality of lifting points are provided on the large-span multi-frame trusses; A reinforcement structure for lifting a large-span multi-span truss according to any one of claims 1 to 4 is installed inside the large-span multi-span truss at the lifting point.

6. A reinforcement method for lifting large-span multi-trusses according to claim 5, characterized in that: The steps of installing the large-span multi-truss lifting reinforcement structure include: If the large-span multi-frame trusses at the lifting points have web members, first connect the outer frame rods to the web members and the chord members to complete the closed outer frame; If the large-span multi-frame truss at the lifting point does not have a web member, the outer frame rods and the chord rods are first connected in sequence to form a closed outer frame.

7. A reinforcement method for lifting a large-span multi-truss truss according to claim 5 or 6, characterized in that: The steps of installing the large-span multi-truss lifting reinforcement structure include: The oblique support rods and the straight support rods are installed inside the outer frame.

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