Flexible diagonal web member space truss

Abstract

The utility model belongs to the technical field of trusses, and particularly relates to a flexible diagonal web member space truss. The truss comprises a chord member, and the chord member comprises an upper chord member and a lower chord member which are arranged in parallel; the two ends of the vertical web member are vertically and fixedly connected with the upper chord member and the lower chord member respectively; the diagonal web members are obliquely arranged between the vertical web members, and the two ends of the diagonal web members are connected with the joints of the chord members and the vertical web members respectively. According to the truss provided by the utility model, diagonal web members in a traditional space truss structure are replaced by the steel pull rods or the inhaul cables, so that the self weight of the structure is obviously reduced. The steel pull rods or the inhaul cables are adopted as the flexible diagonal web members, so that the flexible diagonal web members only bear axial tension, the cross section size of the members is reduced, the self weight of the structure is reduced, and the basic load of a building is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of truss technology, and in particular relates to a flexible diagonal web space truss. Background Technology

[0002] In large-span industrial and civil steel structure buildings, common structural systems include trusses, space frames, grid shells, arches, and cable structures. These structures are widely used in applications requiring the bearing of large span loads. Truss structures, as the main bending-bearing members, typically consist of chords and web members. The web members mostly use solid-web steel sections, such as H-beams, rectangular tubes, or circular tubes, which can withstand axial tension and compression. However, existing technologies for traditional truss structures have several major problems: First, solid-web steel sections are heavy and require a large amount of steel, resulting in a cumbersome structure, especially in large-span buildings. Second, due to the large cross-sectional dimensions of the steel sections, traditional truss structures struggle to meet architects' demands for slender, lightweight aesthetics in modern architecture, affecting the building's visual appeal. Finally, although flexible components such as steel cables have been used in truss structures, their application is limited, failing to fully integrate with typical space truss structures, thus restricting their potential for reducing self-weight and optimizing structural design. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned shortcomings by providing a flexible diagonal web space truss.

[0004] Firstly, a truss employs the following technical solution:

[0005] A truss, comprising:

[0006] The chord includes an upper chord and a lower chord arranged parallel to each other;

[0007] A vertical web member, the two ends of which are respectively vertically fixed to the upper chord and the lower chord;

[0008] A diagonal web member is inclinedly arranged between the vertical web members, and both ends of the diagonal web member are respectively connected to the connection points of the chord member and the vertical web member.

[0009] Furthermore, the truss also includes an upper straight web member, a roof beam, and a lower straight web member; the upper straight web member is horizontally and vertically fixedly connected to the upper chord; the two ends of the roof beam are respectively connected to the upper straight web members between the two trusses; and the lower straight web member in a single truss is vertically and fixedly connected to the lower chord.

[0010] Furthermore, the diagonal brace includes a diagonal steel tie rod, which includes a rod body and a U-shaped connector. The U-shaped connector is fixedly connected to both ends of the rod body, and a pin hole is provided on the U-shaped connector.

[0011] Furthermore, the diagonal web member also includes a cross-type diagonal web steel tie rod, which includes a rod body, a fork-shaped member, and a U-shaped connector; the fork-shaped member is symmetrically provided with four connecting holes; one end of the rod body is connected to the connecting hole, and the other end is connected to the U-shaped connector; the U-shaped connector is provided with the pin hole.

[0012] Furthermore, the chord is fixedly provided with a connecting lug near the vertical web member and the upper straight web member. The connecting lug has a through hole, and the through hole is fixedly connected to the pin hole by a pin. A double-sided ring plate is also provided between the connecting lug and the U-shaped connector.

[0013] Furthermore, the truss also includes side frames, which include side frame horizontal roof bracing and inter-frame horizontal roof bracing; the side frame horizontal roof bracing is a plane formed by the upper chord and the upper straight web member, and the inter-frame horizontal roof bracing is a plane formed by the upper chord, the roof beam and the upper straight web member of the two frames; the side frame is equipped with the cross-shaped diagonal web steel tie rod.

[0014] Secondly, a flexible diagonal web-strut space truss adopts the following technical solution:

[0015] A flexible diagonal web space truss, the flexible diagonal web space truss comprising the truss and support structure described in any of the above claims, the support structure being fixedly disposed below the truss, the support structure being used to support the truss.

[0016] Furthermore, the support structure includes a first support structure and a second support structure, wherein the first support structure is disposed at both ends of the truss and the second support structure is disposed in the middle of the truss.

[0017] Furthermore, the first support structure includes a first structural column, a first structural column base, and a hinge pin, wherein the first structural column and the first structural column base are flexibly connected by the hinge pin.

[0018] The second support structure includes a second structural column, a second structural column base, and a rigid connector, wherein the second structural column and the second structural column base are rigidly connected by the rigid connector.

[0019] Furthermore, the second structural column is fixedly provided with a connecting plate, and a transverse support rod and an oblique support rod are provided between the second structural columns. The two ends of the transverse support rod and the oblique support rod are respectively fixedly connected to the connecting plate.

[0020] The beneficial effects of this utility model are:

[0021] This utility model provides a truss that significantly reduces the structural self-weight by replacing the diagonal web members, which only bear tensile force in traditional space truss structures, with steel tie rods or cables. Using steel tie rods or cables as flexible diagonal web members, which only bear axial tensile force, not only reduces the cross-sectional dimensions of the members but also lowers the structural self-weight, thereby reducing the foundation load on the building.

[0022] Meanwhile, the application of flexible diagonal web members significantly reduces the amount of steel used in the structure. Because the steel tie rods (cables) use high-strength steel, the required steel cross-sectional area is significantly reduced under the same internal force conditions, resulting in less overall steel consumption compared to traditional solid-web steel structures. This not only reduces material costs but also improves resource utilization, contributing to the achievement of energy conservation and emission reduction goals.

[0023] Furthermore, the use of flexible diagonal braces makes the building structure more slender and aesthetically pleasing, meeting architects' demands for lightweight and aesthetically pleasing modern architecture. This design not only enhances the building's visual appeal but also aligns with the development trend of green building, making a positive contribution to energy conservation and carbon reduction. Attached Figure Description

[0024] Figure 1 Isometric drawings of two trusses;

[0025] Figure 2 This is a top view of the two trusses;

[0026] Figure 3 This is the front view of the truss;

[0027] Figure 4 This is a side view of the truss;

[0028] Figure 5 This is a structural diagram of a diagonal web steel tie rod;

[0029] Figure 6 This is a structural diagram of a cross-type diagonal web steel tie rod;

[0030] Figure 7 This is a structural diagram of the installation of the diagonal web steel tie rod and the upper chord.

[0031] Figure 8 This is a structural diagram of the installation of the diagonal web steel tie rod and the lower chord.

[0032] Figure 9 This is a structural diagram showing the installation of the diagonal steel tie rods and upper chord members for the horizontal roof bracing of the edge frame;

[0033] Figure 10 Isometric drawing of a flexible diagonal web-supported space truss;

[0034] Figure 11 This is the front view of a flexible diagonal web space truss.

[0035] Figure 12This is a structural diagram of the first support structure;

[0036] Figure 13 This is a structural diagram of the second support structure;

[0037] Figure 14 This is a structural diagram of the inter-column bracing for the second structure.

[0038] Figure reference numerals: 1. Truss; 10. Chord; 11. Top chord; 12. Bottom chord; 13. Connecting lug; 131. Double-sided ring plate; 132. Through hole; 133. Pin; 20. Vertical web member; 30. Diagonal web member; 31. Diagonal web tie rod; 32. Cross-type diagonal web tie rod; 311. Member; 312. U-joint; 313. Pin hole; 321. Fork-shaped member; 40. Upper straight web member; 50. Roof beam; 60. Lower straight web member; 70. Edge frame; 71. 72. Horizontal roof support for side trusses; 2. Horizontal roof support between two trusses; 80. Space truss structure; 81. Support structure; 82. First support structure; 83. Second support structure; 84. First structural column; 85. First structural column base; 86. Hinge; 87. Second structural column; 88. Second structural column base; 89. Rigid connection; 80. Second structural column support; 81. Horizontal support rod; 82. Diagonal support rod; 82. Connecting plate. Detailed Implementation

[0039] The following detailed description, in conjunction with embodiments, further illustrates a flexible diagonal web-braced space truss according to this utility model. For the sake of simplicity, this document cannot exhaustively list all alternative technical features and implementation schemes included in this utility model. Therefore, those skilled in the art should understand that any technical feature and implementation scheme within this embodiment does not limit the scope of protection of this utility model. The scope of protection includes all alternative technical features and implementation schemes adopted by those skilled in the art without inventive effort. Specifically, any implementation scheme obtained by replacing any technical feature in this utility model or combining any two or more technical features provided by this utility model should be within the scope of protection of this utility model.

[0040] like Figure 1 , 2 As shown in Figures 1 and 3. This embodiment provides a truss 1, including:

[0041] The chord 10 includes an upper chord 11 and a lower chord 12 arranged parallel to each other.

[0042] Vertical web member 20, with its two ends vertically fixed to the upper chord member 11 and the lower chord member 12, respectively;

[0043] The inclined web member 30 is inclinedly arranged between the vertical web members 20, and the two ends of the inclined web member 30 are respectively connected to the connection points of the chord member 10 and the vertical web member 20.

[0044] As an improvement to the above scheme, the number of chords in the truss can be three, four, five, or more. Three chords can form a triangular truss, four chords can form a four-chord truss, and five or more chords can form truss cross-sectional forms with more diverse shapes. Moreover, the arrangement of the chords in the cross-section can be flexibly arranged. For example, a four-chord space truss can form a rectangular four-chord space truss, an inverted trapezoidal four-chord space truss, etc.

[0045] In a specific embodiment, the cross-section of the truss is an inverted trapezoid, with the four vertices of the inverted trapezoid being chords, the two at the top being upper chords, the two at the bottom being lower chords, and the waist being vertical web members and diagonal web members.

[0046] As a further improvement to the above scheme, the shape of the chord members along the span of the truss can be flexibly adjusted, including the shape of the upper chord and the lower chord and their relationship. The shape of the chord members can be horizontal, double slope, curved, etc., and the relationship between the chord members can be parallel or convergent, etc.

[0047] As a further improvement to the above scheme, the diagonal web members in the truss can be steel tie rods, steel cables, or a combination of flexible diagonal web members and solid web steel sections.

[0048] like Figure 4 As shown. In some embodiments, the truss 1 further includes an upper straight web member 40, a roof beam 50, and a lower straight web member 60; the upper straight web member 40 is horizontally and vertically fixedly connected to the upper chord member 11; the two ends of the roof beam 50 are respectively connected to the upper straight web members 40 between the two trusses; the lower straight web member 60 in a single truss is vertically and fixedly connected to the lower chord member 12.

[0049] In a specific embodiment, the two parallel sides are straight web members, with the upper part being an upper straight web member and the lower part being a lower straight web member. For the truss cross-section at the structural column location, due to architectural design requirements, there are no upper straight web members, only lower straight web members. For the truss cross-section at locations other than the structural columns, both upper and lower straight web members are present.

[0050] like Figure 5 As shown. In some embodiments, the diagonal brace 30 includes a diagonal steel tie rod 31, which includes a rod body 311 and a U-shaped connector 312. The U-shaped connector 312 is fixedly connected to both ends of the rod body 311, and a pin hole 313 is provided on the U-shaped connector 312.

[0051] When the structure is under stress, the diagonal web steel tie rod mainly bears the axial tensile force. Both ends of the tie rod are connected to other components via U-joints, and a pin is inserted into the pin hole, allowing the tie rod to effectively transmit the tensile force. Because the tie rod only bears tensile force and does not participate in bearing compressive force, the risk of failure due to compression is avoided.

[0052] When external loads are applied to the truss structure, the chords and web members work together, with the diagonal web tie rods transferring the loads they bear to the main structure. The U-shaped joint design ensures flexible connection between the tie rods and other parts of the structure, while the pin holes provide sufficient degrees of freedom to ensure safety and stability under tension.

[0053] like Figure 6 As shown. In some embodiments, the diagonal web member 30 further includes a cross-shaped diagonal web steel tie rod 32, which includes a rod body 311, a fork-shaped member 321, and a U-shaped connector 312; the fork-shaped member 321 is symmetrically provided with four connecting holes; one end of the rod body 311 is connected to the connecting hole, and the other end is connected to the U-shaped connector 312; the U-shaped connector 312 is provided with a pin hole 313.

[0054] When a truss structure is under stress, the cross-type diagonal web tie rods bear the axial tensile force through their rods and fork-shaped members. Their cross arrangement allows them to resist vertical shear forces in two directions. For shear forces in one direction, the tension along the axis of the corresponding diagonal web tie rod is borne by the shear force, while the diagonal web tie rod in the other direction is compressed and no longer engaged. For shear forces in the opposite direction, the stress on the two diagonal web tie rods is reversed. In other words, the cross-type diagonal web tie rods always ensure that at least one diagonal web tie rod is under stress, and only bears axial tensile force.

[0055] When external forces are applied to the truss structure, the diagonal web steel tie rods are connected to other components through U-joints. The pins in the pin holes provide rotational freedom, ensuring that the tie rods can be flexibly adjusted according to the direction of the external force. At the same time, the cross design of the fork-shaped members allows the tie rods to withstand tensile forces from different directions, thereby effectively resisting structural deformation and shear forces in multiple directions and adapting to complex and variable load conditions and structural internal force distribution.

[0056] like Figure 7 , 8 As shown in Figures 9 and 10. In some embodiments, the chord 10 is fixedly provided with a connecting lug 13 near the vertical web 20 and the upper straight web 40. The connecting lug 13 has a through hole 132, and the through hole 132 is fixedly connected to the pin hole 313 by a pin 133. A double-sided ring plate 131 is also provided between the connecting lug 13 and the U-shaped connector 312.

[0057] The chord members are secured near the vertical web members and the upper straight web members using connecting lugs. These lugs have through holes that connect to the pin holes on the U-joint via pins. The pins within these through holes provide sufficient rotational freedom, allowing the components to maintain a flexible connection under stress, preventing stress concentration or damage to the connection due to excessive rigidity.

[0058] Double-sided ring plates are placed between the connecting lugs and the U-shaped joints to further disperse stress at the connection point when the structure is under load. This multi-layered connection design ensures that the stress between the chord members and web members is evenly distributed, improving the load-bearing capacity and safety of the joint.

[0059] like Figure 2 As shown. In some embodiments, the truss 1 further includes a side frame 70, which includes a side frame horizontal roof brace 71 and a horizontal roof brace 72 between the two frames; the side frame horizontal roof brace 71 is a plane formed by the upper chord 11 and the upper straight web member 40, and the horizontal roof brace 72 between the two frames is a plane formed by the upper chord 11 between the two frames, the roof beam 50 and the upper straight web member 40; the side frame 70 is provided with a cross-shaped diagonal web steel tie rod 32.

[0060] The design of the edge trusses includes horizontal roof bracing for the edge trusses and horizontal roof bracing between the two trusses. The horizontal roof bracing for the edge trusses forms a plane through the top chord and upper straight web members; this planar structure provides necessary lateral support, thereby enhancing the structure's resistance to lateral forces. The horizontal roof bracing between the two trusses forms a plane through the top chord, roof beams, and upper straight web members between the two trusses, ensuring stable connections between the trusses and further enhancing the structure's lateral stiffness and overall integrity.

[0061] The cross-shaped diagonal bracing rods arranged inside the side trusses, connected by fork-shaped members and U-shaped joints, enable the truss to more effectively resist shear forces from different directions. This ensures that the structure can distribute the load and remain stable under multiple load conditions, preventing local structural instability or shear failure due to excessive load.

[0062] like Figure 10 As shown. This embodiment provides a flexible diagonal web space truss 2, which includes a truss 1 and a support structure 80. The support structure 80 is fixedly disposed below the truss 1 and is used to support the truss 1.

[0063] like Figure 11 As shown. In some embodiments, the support structure 80 includes a first support structure 81 and a second support structure 82, with the first support structure 81 disposed at both ends of the truss 1 and the second support structure 82 disposed in the middle of the truss 1.

[0064] Flexible diagonal web space trusses work together through a combination of trusses and supporting structures. The first supporting structure is located at both ends of the truss, mainly bearing vertical loads and providing end constraints to prevent lateral displacement or tilting at the ends. The second supporting structure is located in the middle of the truss, mainly supporting the central region of the truss and ensuring that excessive deflection or deformation does not occur in the middle of the truss under load.

[0065] Under external loads (such as self-weight, wind load, etc.), the truss structure transfers the load to the supporting structure. The first supporting structure, as the end support of the truss, bears part of the vertical and horizontal forces, while the second supporting structure shares the load in the middle, further optimizing the force transmission path and ensuring the structural safety and stability of the truss in large-span applications.

[0066] like Figure 12 , 13 As shown. In some embodiments, the first support structure 81 includes a first structural column 811, a first structural column base 812, and a hinge pin 813, wherein the first structural column 812 and the first structural column base 812 are flexibly connected by the hinge pin 813;

[0067] The second support structure 82 includes a second structural column 821, a second structural column base 822, and a rigid connector 823. The second structural column 821 and the second structural column base 822 are rigidly connected by the rigid connector 824.

[0068] The first support structure consists of a first structural column, a first structural column base, and a hinge shaft. It adopts a fixed hinge connection method, that is, the column and the column base are connected by the hinge shaft, which allows the column to rotate to a certain extent in the horizontal direction, but still maintains a certain degree of stability.

[0069] The second support structure consists of a second structural column, a second structural column base, and rigid connectors. It adopts a rigid connection method, that is, the column and the column base are directly connected through rigid connectors, which does not allow the column to move or rotate in the horizontal direction, thus providing stronger support and resistance to lateral forces.

[0070] The first support structure is mainly used to bear vertical loads and unidirectional horizontal loads in the plane of rotation along the hinge axis. It allows the structure to undergo certain deformations under horizontal loads such as earthquakes, thereby improving the seismic performance of the structure.

[0071] The second support structure is mainly used to bear vertical loads and bidirectional horizontal loads, providing stronger support and lateral force resistance to ensure the structure remains stable under horizontal loads such as earthquakes.

[0072] like Figure 14As shown. In some embodiments, a connecting plate 8243 is fixedly provided on the second structural column 821, and a transverse support rod 8241 and an oblique support rod 8242 are provided between the second structural columns 821. The two ends of the transverse support rod 8241 and the oblique support rod 8242 are respectively fixedly connected to the connecting plate 8243.

[0073] The connecting plate is fixedly installed on the second structural column, serving as a connection node between the horizontal support rods and the diagonal support rods. It connects the horizontal support rods into a whole, forming a stable support system. The connecting plate can also transfer horizontal loads, transferring the loads from the structural column to the horizontal support rods and the diagonal support rods, and then through them to the adjacent structural columns, thereby forming an overall lateral force resisting system.

[0074] Horizontal bracing members connect adjacent structural columns, forming horizontal supports to resist horizontal loads such as seismic or wind forces. Horizontal bracing members can be made of round tubes, square tubes, or other steel sections; the appropriate cross-sectional shape and material are selected based on actual needs.

[0075] Diagonal bracing members connect adjacent structural columns, forming diagonal supports that improve the overall stiffness of the structure and enhance its resistance to lateral forces. The installation of diagonal bracing members can optimize the structural stress performance, reduce structural deformation, and improve structural stability. The inclination angle of the diagonal bracing members can be adjusted according to actual needs to achieve the best stress-bearing effect.

[0076] The second support structure, through the synergistic action of connecting plates, transverse support rods, and diagonal support rods, forms a stable triangular support system, effectively resisting horizontal loads, improving the overall stiffness of the structure, and enhancing its lateral force resistance.

[0077] For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations, but obvious variations or modifications derived therefrom are still within the scope of protection of the claims of this invention.

Claims

1. A truss, characterized in that, include: The chord includes an upper chord and a lower chord arranged parallel to each other; A vertical web member, the two ends of which are respectively vertically fixed to the upper chord and the lower chord; A diagonal web member is inclinedly disposed between the vertical web members, and both ends of the diagonal web member are respectively connected to the connection points of the chord member and the vertical web member; the diagonal web member includes a diagonal web steel tie rod, the diagonal web steel tie rod includes a rod body and a U-shaped joint, the U-shaped joint is fixedly connected to both ends of the rod body, and a pin hole is provided on the U-shaped joint.

2. A truss according to claim 1, characterized in that, The truss also includes upper straight web members, roof beams, and lower straight web members; the upper straight web members are horizontally and vertically fixedly connected to the upper chord; the roof beams are respectively connected at both ends to the upper straight web members between two trusses; in a single truss, the lower straight web members are vertically and fixedly connected to the lower chord.

3. A truss according to claim 2, characterized in that, The diagonal brace also includes a cross-shaped diagonal brace steel tie rod, which includes a rod body, a fork-shaped component, and a U-shaped connector; the fork-shaped component is symmetrically provided with four connecting holes; one end of the rod body is connected to the connecting hole, and the other end is connected to the U-shaped connector; the U-shaped connector is provided with the pin hole.

4. A truss according to claim 3, characterized in that, The chord is fixedly provided with connecting lugs near the vertical web and the upper straight web. The connecting lugs have through holes, and the through holes are fixedly connected to the pin holes by pins. Double-sided ring plates are also provided between the connecting lugs and the U-shaped joint.

5. A truss according to claim 4, characterized in that, The truss also includes side frames, which include side frame horizontal roof bracing and inter-frame horizontal roof bracing; the side frame horizontal roof bracing is a plane formed by the upper chord and the upper straight web member, and the inter-frame horizontal roof bracing is a plane formed by the upper chord, the roof beam and the upper straight web member of the two frames; the side frame is equipped with the cross-shaped diagonal web steel tie rod.

6. A flexible diagonal web-supported space truss, characterized in that, The flexible diagonal web space truss includes the truss and support structure as described in any one of claims 1 to 5, wherein the support structure is fixedly disposed below the truss and is used to support the truss.

7. A flexible diagonal web space truss according to claim 6, characterized in that, The support structure includes a first support structure and a second support structure, with the first support structure located at both ends of the truss and the second support structure located in the middle of the truss.

8. A flexible diagonal web space truss according to claim 7, characterized in that, The first support structure includes a first structural column, a first structural column base, and a hinge pin, wherein the first structural column and the first structural column base are connected by the hinge pin. The second support structure includes a second structural column, a second structural column base, and a rigid connector, wherein the second structural column and the second structural column base are rigidly connected by the rigid connector.

9. A flexible diagonal web space truss according to claim 8, characterized in that, The second structural column is fixedly equipped with a connecting plate, and a transverse support rod and an oblique support rod are provided between the second structural columns. The two ends of the transverse support rod and the oblique support rod are respectively fixedly connected to the connecting plate.

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