A spatial inverted triangular pyramid steel truss and its installation method

Abstract

This invention discloses a spatial inverted triangular pyramidal steel truss and its installation method. The truss includes a support frame and a horizontal truss. The bottom of the support frame is fixedly connected to a base, and an adapter is fixedly installed on the top of the base. There is at least one horizontal truss, which is fixed to the support frame via the adapter. The horizontal truss includes at least two truss mechanisms, with limiting members fixedly installed at both ends of each truss mechanism. A connecting member is provided between adjacent truss mechanisms. The truss mechanism is fixed to the support frame by the cooperation of the limiting member and the adapter, and the adjacent truss mechanisms are fixed by the cooperation of the limiting member and the connecting member. The truss of this invention can be assembled by welding the truss mechanism on the ground first and then suspending it to the installation position by a crane. The installation position and extension length of the horizontal truss can be adjusted as needed, and the segmented suspension installation can reduce the requirements for lifting equipment and ensure the safety of construction.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a spatial inverted triangular pyramidal steel truss and its installation method. Background Technology

[0002] A truss is a structure composed of members connected at both ends by hinges. Trusses are planar or spatial structures typically consisting of straight members and triangular units. Truss members primarily bear axial tension or compression, thus making full use of the material's strength. For large spans, trusses can save material compared to solid-web beams, reducing self-weight and increasing stiffness. The advantages of trusses are that the members primarily bear tension or compression, fully utilizing the material's potential, saving material, and reducing structural weight. Commonly used types include steel trusses, reinforced concrete trusses, prestressed concrete trusses, timber trusses, steel-timber composite trusses, and steel-concrete composite trusses.

[0003] With the continuous increase in the span of steel structures and the development of irregular structures, especially the widespread application of large-span trusses and space frame structures, segmenting the steel structure and using small and medium-sized equipment for ground assembly and large equipment for segmented hoisting is a good solution to reduce the amount of high-altitude assembly and welding work. Currently, the structural form of inverted triangular trusses is mostly composed of diagonal web members spliced ​​between the top and bottom members to form an inverted triangular shape. During the construction process, if there are inverted triangular trusses in the steel structure, the ground assembly measures for the inverted triangular trusses mostly adopt single-point fixed support measures in the form of welding. This results in a significant amount of time, manpower, and resources being spent on readjusting (marking points, laying out lines) the assembly measures after each truss assembly and the transfer of the entire component, and the assembly measures lack versatility. Therefore, there is an urgent need for a truss structure that is easy to assemble to meet the requirements of rapid on-site construction. Summary of the Invention

[0004] The purpose of this invention is to provide a spatial inverted triangular pyramidal steel truss, which can be welded on the ground first and then suspended to the installation position by a crane for assembly. The installation position and extension length of the horizontal truss can be adjusted as needed, and the segmented suspension installation can reduce the requirements for lifting equipment and ensure the safety of construction.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A spatial inverted triangular pyramidal steel truss includes a support frame and a horizontal truss. The bottom of the support frame is fixedly connected to a base, and an adapter is fixedly installed on the top of the base. There is at least one horizontal truss, which is fixed to the support frame via the adapter. The horizontal truss includes at least two truss mechanisms. Limiting members are fixedly installed at both ends of the truss mechanisms. A connecting member is provided between two adjacent truss mechanisms. The truss mechanism is fixed to the support frame by cooperating with the adapter through the limiting member, and the two adjacent truss mechanisms are fixed by cooperating with the connecting member.

[0007] Preferably, the support frame includes at least four columns, with flanges fixed at both the upper and lower ends of the columns. The flange at the lower end of the column is fixed to the base by bolts, and the flange at the upper end of the column is fixed to the adapter by bolts. Several first sleeves are sleeved on the surface of the column. The first sleeves are evenly and equidistantly arranged along the axial direction of the column. The first sleeves in the same layer are fixed to each other by first connecting rods, and the first sleeves in different layers are fixed to each other by second connecting rods arranged in an alternating manner.

[0008] Preferably, the upper and lower ends of the column are provided with axially extending plug-in parts, and the top of the base and the bottom of the adapter are provided with plug holes corresponding to the column, and the plug-in parts are matched with the plug holes.

[0009] Preferably, the truss mechanism includes two parallel upper chords and one lower chord, which are arranged in an isosceles triangle. A web member assembly is provided between the upper and lower chords. The web member assembly includes a second sleeve and a fixing block. The second sleeve is evenly and equidistantly fitted onto the surface of the upper chord, and the fixing block is evenly and equidistantly fixed to the surface of the lower chord by bolts. The second sleeves in the same row are fixed to each other by a third connecting rod, and the second sleeves in different rows are fixed to each other by a fourth connecting rod. The fixing block is located between two rows of second sleeves, and the top of the fixing block is fixed to the upper second sleeve by a fifth connecting rod.

[0010] Preferably, the limiting component includes a third sleeve, a sixth connecting rod, and a limiting block. The third sleeve is sleeved on the surface of the lower chord and is flush with the outermost second sleeve at both ends of the truss mechanism. The limiting block is fixed between the second sleeve and the third sleeve and is connected to the second sleeve and the third sleeve on the upper and lower sides respectively through the sixth connecting rod.

[0011] Preferably, the connector includes a fixing plate, on both sides of the fixing plate corresponding to the upper chord and the lower chord, a first insertion pipe is fixedly installed, the ends of the upper chord and the lower chord pass through the first insertion pipe, and on both sides of the fixing plate corresponding to the limiting block, a first screw is fixedly installed, the end of the first screw away from the fixing plate passes through the limiting block, and a fastening nut is provided on the surface of the end of the first screw passing through the limiting block.

[0012] Preferably, the adapter includes a housing, with a second connector fixedly installed on the surface of the housing at the position corresponding to the upper and lower chords. The ends of the upper and lower chords pass through the second connector. A second screw is fixedly installed on the surface of the housing at the position corresponding to the limiting block. The end of the second screw away from the fixing plate passes through the limiting block, and a fastening nut is provided on the surface of the end of the second screw that passes through the limiting block.

[0013] An installation method for a spatial inverted triangular pyramid steel truss includes the following steps:

[0014] S1, splicing truss mechanism

[0015] Weld the second sleeve, the fixing block, the third connecting rod, the fourth connecting rod, and the fifth connecting rod into a web member assembly as required. Then, pass the upper and lower chords through the second sleeve and the fixing block respectively. Fix the fixing block to the lower chord with bolts. Then, put the third sleeve on both ends of the lower chord. Weld the sixth connecting rod, the fixing block, and the third sleeve into a connector as required.

[0016] S2, Support frame installation

[0017] Insert the lower end of the column into the socket on the base and fix it to the base with the flange. Then, put the first sleeve on the surface of the column as required. Fix and weld the first connecting rod and the second connecting rod to the first sleeve as required. Finally, insert the upper end of the column into the socket at the bottom of the adapter and fix it to the adapter with the flange.

[0018] S3, Horizontal Truss Installation

[0019] The truss mechanism assembled in step S1 is hoisted to the adapter using a lifting device. The upper and lower chords are inserted into the second insertion pipe, and the second screw passes through the limit block. The truss mechanism is fixed to the adapter by tightening the nut and the second screw. The truss mechanism can be fixed on each side of the adapter box as needed.

[0020] S4, Horizontal Truss Extension

[0021] The assembled truss mechanism is then hoisted to the truss mechanism installed in S3 using a lifting device. A connector is then placed between the two truss mechanisms. The upper and lower chords of the two truss mechanisms are inserted into the first insertion pipe, and the first screw passes through the limiting block. The two truss mechanisms are fixed by tightening the nuts and the first screw. A certain number of truss mechanisms can be assembled at once as needed.

[0022] The beneficial effects of this invention are:

[0023] In this invention, the truss mechanism and support frame are fixed together via limiting components and adapters, and the truss mechanisms are also fixed together via limiting components and connectors. The truss mechanism can be welded on the ground first, then suspended to the installation position by a crane for assembly. The installation position and extension length of the horizontal truss can be adjusted as needed, and the segmented suspension installation reduces the requirements for lifting equipment and ensures construction safety. The upper and lower chords of the truss mechanism are connected by a web member assembly. The second sleeve of the web member assembly is sleeved onto the upper chord, while the fixing block is fixed to the lower chord with bolts. The web member can be fixed to the upper and lower chords via the fixing block after the third, fourth, and fifth connecting rods are welded, facilitating adjustment of the web member position.

[0024] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure of the spatial inverted triangular pyramid steel truss of the present invention;

[0027] Figure 2 This is a schematic diagram of the spatial inverted triangular pyramid steel truss support frame of the present invention;

[0028] Figure 3 This is a schematic diagram of the horizontal truss of the spatial inverted triangular pyramid steel truss of the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of the spatial inverted triangular pyramid steel truss web member assembly of the present invention;

[0030] Figure 5 This is a schematic diagram of the spatial inverted triangular pyramid steel truss limiting component of the present invention;

[0031] Figure 6 This is a structural schematic diagram of the spatial inverted triangular pyramid steel truss connector of the present invention.

[0032] In the diagram: 1-Support frame, 2-Horizontal truss, 3-Base, 4-Adapter, 5-Truss mechanism, 6-Limiting component, 7-Connector, 8-Column, 9-Flange, 10-First sleeve, 11-First connecting rod, 12-Second connecting rod, 13-Plug-in part, 14-Plug hole, 15-Upper chord, 16-Lower chord, 17-Web member assembly, 18-Second sleeve, 19-Fixing block, 20-Third connecting rod, 21-Fourth connecting rod, 22-Fifth connecting rod, 23-Third sleeve, 24-Sixth connecting rod, 25-Limiting block, 26-Fixing plate, 27-First plug-in pipe, 28-First screw, 29-Second plug-in pipe, 30-Second screw, 31-Box body. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figure 1-6 As shown, a spatial inverted triangular pyramid steel truss includes a support frame 1 and a horizontal truss 2. The bottom of the support frame 1 is fixedly connected to a base 3, and a connector 4 is fixedly installed on the top of the base 3. There is at least one horizontal truss 2, which is fixed to the support frame 1 through the connector 4. The horizontal truss 2 includes at least two truss mechanisms 5. Limiting members 6 are fixedly installed at both ends of the truss mechanism 5. A connecting member 7 is provided between two adjacent truss mechanisms 5. The truss mechanism 5 is fixed to the support frame 1 by cooperating with the connector 4 through the limiting member 6, and the two adjacent truss mechanisms 5 are fixed by cooperating with the connecting member 7.

[0035] The support frame 1 includes at least four columns 8. Flanges 9 are fixed at both the upper and lower ends of the columns 8. The flange 9 at the lower end of the column 8 is fixed to the base 3 by bolts, and the flange 9 at the upper end of the column 8 is fixed to the adapter 4 by bolts. Several first sleeves 10 are sleeved on the surface of the column 8. The first sleeves 10 are evenly and equidistantly arranged along the axial direction of the column 8. The first sleeves 10 in the same layer are fixed by first connecting rods 11, and the first sleeves 10 in different layers are fixed by second connecting rods 12 arranged in an alternating manner.

[0036] The upper and lower ends of the column 8 are provided with axially extending plug-in parts 13, and the top of the base 3 and the bottom of the adapter 4 are provided with plug holes 14 corresponding to the column 8. The plug-in parts 13 and plug holes 14 are matched.

[0037] The truss mechanism 5 includes two parallel upper chords 15 and one lower chord 16. The upper chords 15 and lower chords 16 are arranged in an isosceles triangle. A web member assembly 17 is provided between the upper chords 15 and lower chords 16. The web member assembly 17 includes a second sleeve 18 and a fixing block 19. The second sleeves 18 are evenly and equidistantly sleeved on the surface of the upper chords 15. The fixing blocks 19 are evenly and equidistantly fixed to the surface of the lower chords 16 by bolts. The second sleeves 18 in the same row are fixed by a third connecting rod 20, and the second sleeves 18 in different rows are fixed by a fourth connecting rod 21. The fixing blocks 19 are located between the two rows of second sleeves 18, and the top of the fixing blocks 19 is fixed to the upper second sleeve 18 by a fifth connecting rod 22.

[0038] The limiting component 6 includes a third sleeve 23, a sixth connecting rod 24, and a limiting block 25. The third sleeve 23 is sleeved on the surface of the lower chord 16 and is flush with the outermost second sleeve 18 at both ends of the truss mechanism 5. The limiting block 25 is fixed between the second sleeve 18 and the third sleeve 23 and is connected to the second sleeve 18 and the third sleeve 23 on the upper and lower sides respectively through the sixth connecting rod 24.

[0039] The connector 7 includes a fixing plate 26. The first insertion pipe 27 is fixedly installed on both sides of the fixing plate 26 at the positions corresponding to the upper chord 15 and the lower chord 16. The ends of the upper chord 15 and the lower chord 16 pass through the first insertion pipe 27. The first screw 28 is fixedly installed on both sides of the fixing plate 26 at the positions corresponding to the limiting block 25. The end of the first screw 28 away from the fixing plate 26 passes through the limiting block 25. A fastening nut is provided on the surface of the end of the first screw 28 that passes through the limiting block 25.

[0040] The adapter 4 includes a housing 31. A second connector 29 is fixedly installed on the surface of the housing 31 at the position corresponding to the upper chord 15 and the lower chord 16. The ends of the upper chord 15 and the lower chord 16 pass through the second connector 29. A second screw 30 is fixedly installed on the surface of the housing 31 at the position corresponding to the limiting block 25. The end of the second screw 30 away from the fixing plate 26 passes through the limiting block 25. A fastening nut is provided on the surface of the end of the second screw 30 that passes through the limiting block 25.

[0041] An installation method for a spatial inverted triangular pyramid steel truss includes the following steps:

[0042] S1, splicing truss mechanism

[0043] Weld the second sleeve, the fixing block, the third connecting rod, the fourth connecting rod, and the fifth connecting rod into a web member assembly as required. Then, pass the upper and lower chords through the second sleeve and the fixing block respectively. Fix the fixing block to the lower chord with bolts. Then, put the third sleeve on both ends of the lower chord. Weld the sixth connecting rod, the fixing block, and the third sleeve into a connector as required.

[0044] S2, Support frame installation

[0045] Insert the lower end of the column into the socket on the base and fix it to the base with the flange. Then, put the first sleeve on the surface of the column as required. Fix and weld the first connecting rod and the second connecting rod to the first sleeve as required. Finally, insert the upper end of the column into the socket at the bottom of the adapter and fix it to the adapter with the flange.

[0046] S3, Horizontal Truss Installation

[0047] The truss mechanism assembled in step S1 is hoisted to the adapter using a lifting device. The upper and lower chords are inserted into the second insertion pipe, and the second screw passes through the limit block. The truss mechanism is fixed to the adapter by tightening the nut and the second screw. The truss mechanism can be fixed on each side of the adapter box as needed.

[0048] S4, Horizontal Truss Extension

[0049] The assembled truss mechanism is then hoisted to the truss mechanism installed in S3 using a lifting device. A connector is then placed between the two truss mechanisms. The upper and lower chords of the two truss mechanisms are inserted into the first insertion pipe, and the first screw passes through the limiting block. The two truss mechanisms are fixed by tightening the nuts and the first screw. A certain number of truss mechanisms can be assembled at once as needed.

[0050] The above description is merely an example and illustration of the concept of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the concept of the invention or exceed the scope defined in the claims, they should all fall within the protection scope of the present invention.

Claims

1. A spatially inverted triangular pyramidal steel truss, characterized by: The system includes a support frame (1) and a horizontal truss (2). The bottom of the support frame (1) is fixedly connected to the base (3). The top of the base (3) is fixedly installed with an adapter (4). There is at least one horizontal truss (2). The horizontal truss (2) is fixed to the support frame (1) through the adapter (4). The horizontal truss (2) includes at least two truss mechanisms (5). Both ends of the truss mechanism (5) are fixedly installed with limiting members (6). A connecting member (7) is provided between two adjacent truss mechanisms (5). The truss mechanism (5) is fixed to the support frame (1) by the cooperation of the limiting member (6) and the adapter (4). The two adjacent truss mechanisms (5) are fixed by the cooperation of the limiting member (6) and the connecting member (7). The truss mechanism (5) includes two parallel upper chords (15) and one lower chord (16). The upper chords (15) and the lower chords (16) are arranged in an isosceles triangle. A web member assembly (17) is provided between the upper chords (15) and the lower chords (16). The web member assembly (17) includes a second sleeve (18) and a fixing block (19). The second sleeve (18) is evenly and equidistantly sleeved on the surface of the upper chord (15). The fixing block (19) is evenly and equidistantly fixed on the surface of the lower chord (16) by bolts. The second sleeves (18) in the same row are fixed by a third connecting rod (20). The second sleeves (18) in different rows are fixed by a fourth connecting rod (21). The fixing block (19) is located between two rows of second sleeves (18). The top of the fixing block (19) is fixed to the upper second sleeve (18) by a fifth connecting rod (22). The limiting component (6) includes a third sleeve (23), a sixth connecting rod (24), and a limiting block (25). The third sleeve (23) is sleeved on the surface of the lower chord (16). The third sleeve (23) is flush with the outermost second sleeve (18) at both ends of the truss mechanism (5). The limiting block (25) is fixed between the second sleeve (18) and the third sleeve (23). The limiting block (25) is connected to the second sleeve (18) and the third sleeve (23) on the upper and lower sides respectively through the sixth connecting rod (24). The adapter (4) includes a housing (31). A second insertion tube (29) is fixedly installed on the surface of the housing (31) at the position corresponding to the upper chord (15) and the lower chord (16). The ends of the upper chord (15) and the lower chord (16) pass through the second insertion tube (29). A second screw (30) is fixedly installed on the surface of the housing (31) at the position corresponding to the limiting block (25). The end of the second screw (30) away from the fixing plate (26) passes through the limiting block (25). A fastening nut is provided on the surface of the end of the second screw (30) that passes through the limiting block (25). The connector (7) includes a fixing plate (26). A first insertion tube (27) is fixedly installed on both sides of the fixing plate (26) at the positions corresponding to the upper chord (15) and the lower chord (16). The ends of the upper chord (15) and the lower chord (16) pass through the first insertion tube (27). A first screw (28) is fixedly installed on both sides of the fixing plate (26) at the positions corresponding to the limiting block (25). The end of the first screw (28) away from the fixing plate (26) passes through the limiting block (25). A fastening nut is provided on the surface of the end of the first screw (28) that passes through the limiting block (25).

2. The spatial inverted triangular pyramid steel truss according to claim 1, characterized in that: The support frame (1) includes at least four columns (8). The upper and lower ends of the columns (8) are fixed with flanges (9). The flange (9) at the lower end of the column (8) is fixed to the base (3) by bolts. The flange (9) at the upper end of the column (8) is fixed to the adapter (4) by bolts. Several first sleeves (10) are sleeved on the surface of the column (8). The first sleeves (10) are evenly and equidistantly arranged along the axial direction of the column (8). The first sleeves (10) in the same layer are fixed with first connecting rods (11). The first sleeves (10) in different layers are fixed with second connecting rods (12) arranged in an alternating manner.

3. The spatial inverted triangular pyramid steel truss according to claim 2, characterized in that: The upper and lower ends of the column (8) are provided with axially extending plug-in parts (13), and the top of the base (3) and the bottom of the adapter (4) are provided with plug holes (14) corresponding to the column (8). The plug-in parts (13) and plug holes (14) are matched.

4. The installation method of the spatial inverted triangular pyramid steel truss as described in any one of claims 1-3, characterized in that: Includes the following steps: S1, splicing truss mechanism Weld the second sleeve, the fixing block, the third connecting rod, the fourth connecting rod, and the fifth connecting rod into a web member assembly as required. Then, pass the upper and lower chords through the second sleeve and the fixing block respectively. Fix the fixing block to the lower chord with bolts. Then, put the third sleeve on both ends of the lower chord. Weld the sixth connecting rod, the fixing block, and the third sleeve into a connector as required. S2, Support frame installation Insert the lower end of the column into the socket on the base and fix it to the base with the flange. Then, put the first sleeve on the surface of the column as required. Fix and weld the first connecting rod and the second connecting rod to the first sleeve as required. Finally, insert the upper end of the column into the socket at the bottom of the adapter and fix it to the adapter with the flange. S3, Horizontal Truss Installation The truss mechanism assembled in step S1 is hoisted to the adapter using a lifting device. The upper and lower chords are inserted into the second insertion pipe, and the second screw passes through the limit block. The truss mechanism is fixed to the adapter by tightening the nut and the second screw. The truss mechanism can be fixed on each side of the adapter box as needed. S4, Horizontal Truss Extension The assembled truss mechanism is then hoisted to the truss mechanism installed in S3 using a lifting device. A connector is then placed between the two truss mechanisms. The upper and lower chords of the two truss mechanisms are inserted into the first insertion pipe, and the first screw passes through the limiting block. The two truss mechanisms are fixed by tightening the nuts and the first screw. A certain number of truss mechanisms can be assembled at once as needed.

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