A truss cross K node structure and a method of installing the same

Abstract

The application discloses a kind of truss cross K character node structure and its installation method, belong to truss technical field, solve the problem that existing truss node itself does not have cross structure;It includes vertical rod, and the upper end and the lower end of vertical rod are respectively crossed with two upper beam structures of K type and two lower chord beams;Each upper beam structure includes two inclined rods and upper chord, and vertical rod is also provided with reinforcing support at connecting node for adapting thermal expansion and contraction of upper beam structure and can resist earthquakes and energy dissipation.The application utilizes two upper beam structures of K type not only makes truss itself have cross structure to realize corner change, and through reinforcing support, the strength of cross structure is improved, and reinforcing support can adaptively rotate or tilt with the uneven thermal expansion and contraction of upper chord and inclined rod, reinforcing upper beam structure while avoiding damage of vertical column due to stress concentration.

Description

Technical Field

[0001] This invention relates to the field of truss technology, specifically to a truss intersection K-byte point structure and its installation method. Background Technology

[0002] Trusses are generally composed of multiple segmented trusses. Each segmented truss includes an upper chord, a lower chord, diagonal web members, and vertical web members. The multiple segmented trusses are assembled separately in the factory. After the segmented trusses are transported to the construction site, they are then assembled together to form a complete truss.

[0003] In existing trusses, changes in the direction of rotation are achieved by multiple truss beams being staggered and fixed to steel columns. For example, in the box-type connection node between the truss beam and the steel column in publication number CN211523487U, two sets of truss beams are intersected above the steel column, thus achieving a 90-degree change in the direction of rotation. However, considering that the strength of the truss beams themselves is not as good as that of the steel columns, and that uneven thermal expansion and contraction of the truss beams or seismic waves may cause torque at the intersection nodes, existing truss nodes do not have intersecting structures to achieve changes in rotation. This means that changes in truss rotation must rely on steel columns. However, since not every ground surface is suitable for installing steel columns, the arrangement of trusses is limited. Summary of the Invention

[0004] To address the aforementioned problems in the prior art, this invention provides a truss intersection K-byte node structure, which solves the problem that existing truss nodes themselves lack intersection structures.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A truss cross-K-shaped byte point structure is provided, including uprights, with two K-shaped upper beam structures and two lower chord beams respectively cross-connected at the upper and lower ends of the uprights; each upper beam structure includes two diagonal members and an upper chord beam, one end of each of the two diagonal members is fixed at the connection node between the upper chord beam and the upright, and the other end of each of the two diagonal members extends obliquely downwards in a mirror image with the upright as the line of symmetry and is fixed on the lower chord beam; the uprights are also provided with reinforcing supports at the connection nodes to accommodate the thermal expansion and contraction of the upper beam structure and to resist seismic energy dissipation.

[0007] In this scheme, the two K-shaped upper beam structures not only enable the truss itself to have a cross structure to achieve corner changes, but also the four diagonal members improve the strength of the cross nodes; the use of reinforced supports can resist seismic energy dissipation and improve the strength of the cross structure, and the reinforced supports can adapt to the uneven thermal expansion and contraction of the upper chord beam and diagonal members by rotating or tilting, thus reinforcing the upper beam structure while preventing the columns from being damaged due to stress concentration.

[0008] Further, the cross K-shaped node structure further comprises a skewback node welded at the upper end of the vertical rod, one end of each skew rod is welded to the skewback node, and two upper chord beams are divided into four sections of beam, each two sections of beam are welded to the skewback node.

[0009] Further, the skewback node comprises a connecting beam in the shape of a cross, four ends of the connecting beam are welded to the four sections of beam, and the center point of the connecting beam is welded to four skewbacks, and the four skewbacks are welded to the four sections of beam. The skewbacks improve the strength of the skew rods.

[0010] Further, the outer wall of the adjacent end of each section of beam is welded to a plurality of ribs, and the other end of the plurality of ribs is welded to the outer wall of the connecting beam. The ribs improve the connection strength of the section of beam and the connecting beam.

[0011] Further, the reinforcing support comprises a base seated on the vertical rod and located at the bottom of the skewback node, the base is provided with a spherical support for improving the strength of each section of beam, and the base is provided with a rotary damper for providing damping for the spherical support. The spherical support can rotate and tilt, and when the upper chord beam and the skew rod are subjected to uneven thermal expansion and contraction, the rotary damper has a small damping due to the relatively small and non-abrupt force of thermal expansion and contraction, and the spherical support can adapt to the change of thermal expansion and contraction in time; when an earthquake occurs, the seismic wave will cause the connecting node to be subjected to an abrupt torque, the rotary damper has a large damping, and the spherical support will integrate the four sections of beam, so that the four sections of beam are not subjected to force alone, and the force received by the four sections of beam is evenly distributed to the plurality of steel columns, thereby providing seismic strength.

[0012] Further, the upper projection surface of the spherical support is in the shape of a circle with a through opening in the middle, and the spherical support is seated on the vertical rod; the spherical support comprises an upper support and a lower support, the upper support is seated on the lower support, the lower support is fixed on the base, a spherical crown gasket is arranged between the upper support and the lower support, the plane of the spherical crown gasket is fixedly connected to the upper support, and the spherical surface of the spherical crown gasket is slidably accommodated on the spherical surface slide plate in the lower support; the bottom ring surface of the upper support is fixed to one end of a plurality of linear dampers, the other end of the plurality of linear dampers is fixed around the upper end surface of a connecting piece in the shape of a cross section ring, the lower end surface of the connecting piece is fixed to the connecting end of the rotary damper, and the top ring surface of the upper support is welded to four fixing pieces, the four fixing pieces are in one-to-one matching relationship with the four skew rods, each fixing piece comprises two side plates, and the side surfaces of the two side plates are welded to the two sides of the skew rod and the section of beam located on the skew rod.

[0013] In the scheme, the spherical cap lining plate and the spherical sliding plate are slidably arranged, the upper support can rotate and tilt relative to the lower support, the linear damper and the rotary damper can adapt to the tilt and rotation of the upper support respectively, the four inclined rods and the four-end split beam form an integral whole through the fixing member.

[0014] Further, the diameter of the opening in the middle of the upper support and the spherical cap lining plate is larger than the diameter of the vertical rod, so that the upper support and the spherical cap lining plate ensure that the upper support can rotate and tilt around the vertical rod, and the motion interference is avoided.

[0015] Further, the middle part of the four inclined rods and the vertical rod are horizontally welded with the reinforcing beams. The reinforcing beams improve the connection strength between the inclined rods and the vertical rod.

[0016] On the other hand, a mounting method of the truss cross K-shaped node structure is also provided, which comprises the following steps:

[0017] S1, installing a lower chord beam on the steel column;

[0018] S2, installing a vertical rod on the lower chord beam, installing a reinforcing support on the vertical rod, and installing an inclined bracket node on the reinforcing support;

[0019] S3, installing two inclined rods on the inclined bracket node in parallel, and welding the other ends of the two inclined rods on two sections of the lower chord beam located on the two sides of the vertical rod;

[0020] S4, installing two split beams on the inclined bracket node in parallel, and forming an upper chord beam by the two split beams;

[0021] S5, installing a reinforcing beam in the middle of the two installed inclined rods;

[0022] S6, installing another lower chord beam on the lower chord beam in cross;

[0023] S7, repeating steps S4-S5 once;

[0024] S8, welding the side surfaces of the four fixing members with the side surfaces of the four inclined rods and the four-end split beams respectively, and welding the bottom of the four fixing members on the upper support of the reinforcing support.

[0025] S9, completing the installation.

[0026] The truss cross K-shaped node structure has the following beneficial effects:

[0027] The two K-shaped upper beam structures not only make the truss itself have a cross structure to realize the change of the corner, but also improve the strength of the cross structure through the reinforcing support for anti-seismic energy dissipation. The reinforcing support can adaptively rotate or tilt with the uneven thermal expansion and contraction of the upper chord beam and the inclined rod, reinforce the upper beam structure, and avoid damage of the vertical column due to stress concentration. Attached Figure Description

[0028] Figure 1 This is a structural diagram of a truss intersection K-byte point structure;

[0029] Figure 2 This is a structural diagram of the upper beam structure;

[0030] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0031] Figure 4 This is a schematic diagram of the structure of a rotary damper;

[0032] Figure 5 A schematic diagram of multiple K-byte point structures on a truss;

[0033] Figure 6 This is a schematic diagram of a K-byte point structure;

[0034] The components include: 1. Upper beam structure; 11. Upper chord beam; 111. Sub-beam; 12. Diagonal brace; 13. Reinforcing beam; 14. Rib; 15. Connecting beam; 16. Corbel; 2. Upright; 3. Lower chord beam; 4. Reinforced support; 41. Base; 411. Rotation damper; 42. Lower support; 43. Spherical sliding plate; 44. Spherical crown liner; 45. Upper support; 46. Fixing component; 47. Connecting component; 48. Linear damper; 5. Steel column. Detailed Implementation

[0035] The specific embodiments of the present invention are described below to enable those skilled in the art to understand the present invention. However, it should be understood that the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, various changes are obvious as long as they are within the spirit and scope of the present invention as defined and determined by the appended claims. All inventions utilizing the concept of the present invention are protected.

[0036] First Embodiment

[0037] refer to Figures 1-3 This embodiment provides a truss cross K-byte node structure, including an upper beam structure 1, a vertical pole 2, a lower chord beam 3, and a diagonal corbel node.

[0038] refer to Figure 1 The upper and lower ends of the upright 2 are respectively equipped with two K-shaped upper beam structures 1 and two lower chord beams 3. The two K-shaped upper beam structures 1 give the truss itself a cross structure to achieve the change of rotation angle.

[0039] refer to Figure 2Each upper beam structure 1 comprises two inclined bars 12 and a top chord, one end of each of the two inclined bars 12 is fixed at the connecting node of the top chord beam 11 and the stand bar 2, the other end of each of the two inclined bars 12 extends downwardly symmetrically with the stand bar 2 as the mirror line and is fixed on the lower chord beam 3, the inclined bars 12 improve the strength of the cross node.

[0040] The middle part of each of the four inclined bars 12 and the stand bar 2 are horizontally welded with a reinforcing beam 13. The arrangement of the reinforcing beam 13 improves the connection strength between the inclined bars 12 and the stand bar 2.

[0041] The stand bar 2 is further provided with a reinforcing support 4 at the connecting node of the top chord beam 11 and the stand bar 2 for adapting to the thermal expansion and contraction of the upper beam structure 1 and resisting and dissipating earthquake. The reinforcing support 4 can resist and dissipate earthquake in this embodiment, improve the strength of the cross structure, and the reinforcing support 4 can adaptively rotate or tilt with the uneven thermal expansion and contraction of the top chord beam 11 and the inclined bars 12, reinforcing the upper beam structure 1 while avoiding damage to the stand column due to stress concentration.

[0042] The inclined bracket node is welded at the upper end of the stand bar 2, one end of each of the two inclined bars 12 is welded with the inclined bracket node, and the two top chord beams 11 are divided into four sections of beams 111, the four sections of beams 111 are two by two and are respectively welded on the inclined bracket node. The arrangement of the inclined bracket node facilitates the fixation of the top chord beam 11 and the inclined bars 12.

[0043] The inclined bracket node comprises a connecting beam 15 in the shape of a cross, the four ends of the connecting beam 15 are respectively welded with the four sections of beams 111, and the center point of the connecting beam 15 is welded with four brackets 16 at the bottom, and the four brackets 16 are respectively welded with the four sections of beams 111. The arrangement of the brackets 16 improves the strength of the inclined bars 12.

[0044] A plurality of ribs 14 are welded on the outer walls of the adjacent ends of each group of the sections of beams 111, and the other ends of the plurality of ribs 14 are welded on the outer walls of the connecting beam 15. The arrangement of the ribs 14 improves the connection strength of the sections of beams 111 and the connecting beam 15.

[0045] As a further scheme of the embodiment, referring to Figure 3 and Figure 4 , the reinforcing support 4 comprises a base 41 which is sleeved on the stand bar 2 and located at the bottom of the inclined bracket node, the base 41 is provided with a spherical support for improving the strength of each group of the sections of beams 111, and the base 41 is provided with a rotary damper 411 for providing damping for the spherical support.

[0046] The spherical support can rotate and tilt, and when uneven thermal expansion and cold shrinkage of the upper chord beam 11 and the inclined rods 12 occurs, the spherical support can adapt to the thermal expansion and cold shrinkage in time due to the relatively small and non-abrupt force of thermal expansion and cold shrinkage and the small damping of the rotary damper 411; when an earthquake occurs, the seismic wave will cause the connection node to be subjected to an abrupt torque, the rotary damper 411 has large damping, the spherical support will connect the four split beams 111 into one, so that the four split beams 111 will not be subjected to force alone, and the force received by the four split beams 111 is evenly distributed to the plurality of steel columns 5, thereby providing seismic strength.

[0047] As a further scheme of the embodiment, referring to Figure 3 , the upper projection surface of the spherical support is circular and has a through opening in the middle, and the spherical support is sleeved on the stand rod 2; the spherical support includes an upper support 45 and a lower support 42, the upper support 45 is sleeved on the lower support 42, the lower support 42 is fixed on the base 41, a spherical cap lining plate 44 is arranged between the upper support 45 and the lower support 42, the plane of the spherical cap lining plate 44 is fixedly connected with the upper support 45, and the spherical surface of the spherical cap lining plate 44 is slidably accommodated on the spherical surface sliding plate 43 in the lower support 42.

[0048] Referring to Figure 3 and Figure 4 , the bottom annular surface of the upper support 45 is fixed with one end of a plurality of linear dampers 48, the other end of the plurality of linear dampers 48 is fixed around the upper end surface of a connecting piece 47 which is annular in cross section, the lower end surface of the connecting piece 47 is fixed on the upper connecting end of the rotary damper 411, and the lower support 42 is provided with an annular hole through which the connecting piece is fixedly connected with the rotary damper.

[0049] The top annular surface of the upper support 45 is welded with four fixing pieces 46, the four fixing pieces 46 are in one-to-one matching relationship with the four inclined rods 12 respectively, each fixing piece 46 includes two side plates, and the side surfaces of the two side plates are welded with the inclined rods 12 and the split beams 111 on the inclined rods 12 respectively. The fixing pieces 46 can connect the four inclined rods 12 and the split beams 111 into one whole.

[0050] In this scheme, since the spherical cap lining plate 44 and the spherical surface sliding plate 43 are slidably arranged, the upper support 45 can rotate and tilt relative to the lower support 42, and the linear dampers 48 and the rotary damper 411 can adapt to the tilting and rotating movement of the upper support 45 respectively, and the upper support 45 forms a whole with the four inclined rods 12 and the four split beams 111 through the fixing pieces 46.

[0051] As a further scheme of the embodiment, the diameter of the opening in the middle of the upper support 45 and the spherical cap lining plate 44 is greater than the diameter of the stand rod 2. In this way, the upper support 45 and the spherical cap lining plate 44 ensure that the upper support 45 can rotate and tilt around the stand rod 2, and avoid movement interference.

[0052] Second embodiment

[0053] The embodiment is further limited on the basis of the first embodiment, and the specific improvement lies in how to set the K-shaped node structure, and the other parts not mentioned refer to the first embodiment or the prior art.

[0054] The embodiment provides a mounting method of the truss cross K-shaped node structure, comprising the following steps:

[0055] S1, installing a lower chord beam 3 on the steel column 5;

[0056] S2, installing a vertical rod 2 on the lower chord beam 3, and installing a reinforcing support 4 on the vertical rod 2, and installing a diagonal bracket node on the reinforcing support 4;

[0057] S3, installing two diagonal rods 12 on the diagonal bracket node, and welding the other ends of the two diagonal rods 12 on the two sections of the lower chord beam 3 located on the two sides of the vertical rod 2;

[0058] S4, installing two split beams 111 on the diagonal bracket node, and forming an upper chord beam 11 by the two split beams 111;

[0059] S5, installing a reinforcing beam 13 in the middle of the two installed diagonal rods 12;

[0060] S6, cross-installing another lower chord beam 3 on the lower chord beam 3;

[0061] S7, repeating steps S4-S5 once;

[0062] S8, welding the side surfaces of the four fixing members 46 with the side surfaces of the four diagonal rods 12 and the four end split beams 111 respectively, and welding the bottom of the four fixing members 46 on the upper support 45 of the reinforcing support 4.

[0063] S9, completing the installation.

[0064] Reference Figures 5-6 The embodiment also provides a specific use mode of the truss cross K-shaped node structure.

[0065] When the installation conditions of the steel column 5 cannot be provided inside the boundary of the construction site, a plurality of steel columns 5 are installed on the boundary of the construction site, the plurality of steel columns 5 are connected through the longitudinally and transversely arranged trusses, and the K-shaped node structure is arranged longitudinally and transversely.

[0066] Preferably but not limitedly, the construction site of the embodiment is in the shape of a regular octagon, steel columns 5 are arranged at the eight corners of the construction site, and trusses are arranged in a crisscross manner between the eight steel columns 5, four nodes are formed on the trusses, and four K-shaped node structures are arranged on the four nodes. The four K-shaped node structures make the trusses in the middle of the site also have high strength, achieve the turning of the trusses, and do not need to arrange steel columns 5 inside the boundary of the construction site.

[0067] Although the specific embodiments of the application are described in detail with reference to the accompanying drawings, it should not be understood as limiting the scope of protection of the patent. Various modifications and variations that can be made by those skilled in the art within the scope described in the claims are still within the scope of protection of the patent.

Claims

1. A truss cross K-byte point structure, characterized in that: Includes a pole (2), and the upper and lower ends of the pole (2) are respectively provided with two K-shaped upper beam structures (1) and two lower chord beams (3). Each of the upper beam structures (1) includes two diagonal bars (12) and an upper chord beam (11). One end of each of the two diagonal bars (12) is fixed at the connection node between the upper chord beam (11) and the upright (2). The other end of each of the two diagonal bars (12) extends diagonally downwards with the upright (2) as the line of symmetry and is fixed on the lower chord beam (3). The upright (2) is also provided with a reinforcing support (4) at the connection node to adapt to the thermal expansion and contraction of the upper beam structure (1) and to resist seismic energy dissipation. The cross K-byte point structure also includes a slanted bracket node, which is welded to the upper end of the upright (2). One end of each of the slanted rods (12) is welded to the slanted bracket node. The two upper chord beams (11) are divided into four sub-beams (111). The four sub-beams (111) are grouped in pairs and each is welded to the slanted bracket node. The reinforcing support (4) includes a base (41) sleeved on the upright (2) and located at the bottom of the inclined bracket node. The base (41) is provided with a spherical support for improving the strength of each set of the sub-beams (111). The base (41) is provided with a rotary damper (411) for providing damping for the spherical support. The upper projection surface of the spherical support is a circular structure with a through opening in the middle, and the spherical support is sleeved on the upright (2); The spherical support includes an upper support (45) and a lower support (42). The upper support (45) is sleeved on the lower support (42), and the lower support (42) is fixed on the base (41). A spherical crown liner (44) is provided between the upper support (45) and the lower support (42). The plane of the spherical crown liner (44) is fixedly connected to the upper support (45), and the spherical surface of the spherical crown liner (44) is slidably accommodated on the spherical sliding plate (43) inside the lower support (42). The bottom annular surface of the upper support (45) is fixed to one end of a plurality of linear dampers (48), and the other end of the plurality of linear dampers (48) is fixed around the upper end surface of the connector (47) which is in the shape of an annular cross section. The lower end surface of the connector (47) is fixed to the upper connection end of the rotary damper (411). The top ring surface of the upper support (45) is welded with four fasteners (46). The four fasteners (46) are matched one-to-one with the four diagonal bars (12). Each fastener (46) includes two side plates. The sides of the two side plates are welded to the diagonal bars (12) and the two sides of the beam (111) located on the diagonal bars (12).

2. The truss cross K-byte point structure according to claim 1, characterized in that: The corbel (16) node includes a cross-shaped connecting beam (15), the four ends of which are welded to the four sub-beams (111) respectively, and four corbels (16) are welded to the center point of the connecting beam (15). The four corbels (16) are welded to the four sub-beams (111) respectively.

3. The truss intersection K-byte point structure according to claim 2, characterized in that: Each set of the sub-beams (111) has multiple ribs (14) welded to the outer wall of adjacent ends, and the other end of each rib (14) is welded to the outer wall of the connecting beam (15).

4. The truss intersection K-byte point structure according to claim 1, characterized in that: The diameter of the opening in the middle of the upper support (45) and the spherical crown liner (44) is larger than the diameter of the upright (2).

5. The truss intersection K-byte point structure according to claim 1, characterized in that: A reinforcing beam (13) is horizontally welded between the middle of each of the four diagonal braces (12) and the upright (2).

6. A method for installing a truss intersection K-byte point structure as described in any one of claims 1-5, characterized in that, Includes the following steps: S1. Install a lower chord beam on the steel column; S2. Install uprights on the lower chord beam, install reinforcing supports on the uprights, and install inclined corbel nodes on the reinforcing supports; S3. Install two diagonal braces opposite each other at the diagonal bracket node, and weld the other ends of the two diagonal braces to the two sections of the lower chord beam located on both sides of the upright; S4. Install two branch beams opposite each other at the inclined corbel node, and the two branch beams form the upper chord beam; S5. Install a reinforcing beam in the middle of the two installed diagonal braces; S6. Install another lower chord beam crosswise on the lower chord beam; S7. Repeat steps S4-S5 once; S8. Weld the sides of the four fasteners to the sides of the four diagonal bars and the four end beams respectively, and weld the bottoms of the four fasteners to the upper support of the reinforcement support. S9. Installation complete.

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