Roof truss structure

Abstract

The utility model relates to the technical field of constructional engineering, and discloses a roof truss structure which comprises a truss, the truss comprises a first upper chord, a second upper chord, a lower chord, a first supporting rod, a second supporting rod, a first web member, a second web member and a third web member, and the second upper chord and the lower chord extend in the front-back direction. The second upper chord member and the lower chord member are vertically arranged at intervals, the two ends of the first upper chord member are connected with the front end of the first upper chord member and the front end of the lower chord member respectively, and the first supporting rod, the first web member, the second web member, the third web member and the second supporting rod are all arranged in a supporting cavity defined by the first upper chord member, the second upper chord member and the lower chord member; the upper end of the supporting column is connected with the lower chord; the upper end of the davit is connected with the lower chord member; and the floor beam is detachably arranged at the lower end of the davit. The roof truss structure is simple in structure, and the structural stability of the roof truss structure can be guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, and in particular to a roof truss structure. Background Technology

[0002] With the increasing number of steel structure factory buildings being constructed, their design and construction complexity has significantly increased, especially in the steel truss areas of the factory roofs, where diverse hoisting challenges arise, including but not limited to the installation of heavy steel components, precision electromechanical pipelines, large production equipment, and even stage lighting fixtures. These hoisting operations not only require efficient completion but also must ensure installation accuracy and structural safety.

[0003] As a critical load-bearing structure, the design of steel trusses must fully consider the special characteristics of lower-level hoisting operations. In a conventional truss system consisting of an upper chord, lower chord, and web members, the load distribution during hoisting operations is complex and may occur in the form of line loads or concentrated point loads, making the stability of the truss prone to problems. Utility Model Content

[0004] The purpose of this invention is to provide a simple roof truss structure that can ensure its structural stability.

[0005] To achieve the above objectives, this utility model provides a roof truss structure, comprising:

[0006] The truss includes a first upper chord, a second upper chord, a lower chord, a first support member, a second support member, a first web member, a second web member, and a third web member.

[0007] Both the second upper chord and the lower chord extend in the front-to-back direction, and are spaced apart in the vertical direction. The front end of the second upper chord is located behind the front end of the lower chord. The first upper chord is inclined, and its two ends are connected to the front end of the first upper chord and the front end of the lower chord, respectively.

[0008] Both the first support rod and the second support rod extend vertically. The two ends of the first support rod are respectively disposed on the first upper chord and the lower chord, and the two ends of the second support rod are respectively connected to the junction of the first upper chord and the second upper chord and the lower chord.

[0009] The first web member is inclined, and its two ends are respectively connected to the connection point between the first upper chord and the first support rod, and to the lower chord; the second web member is inclined, with the inclination direction opposite to that of the first web member, and its two ends are respectively connected to the connection point between the first upper chord and the second upper chord, and to the connection point between the first web member and the lower chord; the third web member is inclined, with the inclination direction opposite to that of the second web member, and its two ends are respectively connected to the connection point between the first upper chord and the second upper chord, and to the lower chord.

[0010] A support column, the upper end of which is connected to the lower chord and is located directly below the first support column;

[0011] A hanging column, the upper end of which is connected to the lower chord and is located directly below the second support rod;

[0012] Floor beams, which are detachably installed at the lower end of the hanging columns.

[0013] Furthermore, the first upper chord, the second upper chord, the second web member, and the third web member are all I-beams. A first rib is provided between the two flanges of the first upper chord, and the first rib is perpendicular to the web and flanges of the first upper chord. The lower end of the first rib passes through the lower flange of the first upper chord and smoothly connects with the upper flange of the second web member. A second rib is provided between the two flanges of the second upper chord, and the second rib is perpendicular to the web and flanges of the second upper chord. The lower end of the second rib passes through the lower flange of the second upper chord and smoothly connects with the upper flange of the third web member. The lower flange of the second web member smoothly connects with the lower flange of the third web member. The lower flange of the first upper chord, the lower flange of the second upper chord, the rear end of the second web member, and the front end of the third web member enclose and define an extended web member.

[0014] Furthermore, the second support rod is an I-beam, and the upper ends of the two flanges of the second support rod pass upward through the flanges of the second and third web members that are smoothly connected, the lower flange of the second upper chord, and are connected to the upper flange of the second upper chord.

[0015] Furthermore, the truss also includes multiple fourth web members and multiple fifth web members;

[0016] The fourth brace is inclined and located behind the third brace. The inclination direction of the fourth brace is opposite to that of the third brace. Multiple fourth braces are spaced apart in the front-back direction. The two ends of the fourth brace are respectively connected to the second upper chord and the lower chord.

[0017] The fifth abdominal rod is inclined and located behind the third abdominal rod. The fifth abdominal rod is inclined in the opposite direction to the fourth abdominal rod. Multiple fifth abdominal rods are spaced apart in the front-back direction. The two ends of the fifth abdominal rod are respectively connected to the ends of the adjacent fourth abdominal rod.

[0018] The front end of the fourth web member, located at the foremost side, is connected to the rear end of the third web member.

[0019] Furthermore, the lower chord is an I-beam. The lower end of the flange of the second support rod passes downward through the upper flange of the lower chord and connects with the lower flange of the lower chord. A first connecting plate and a second connecting plate perpendicular to each other are provided between the upper end of the hanging column and the lower chord. The first connecting plate includes a first extension and a first plate body. The second connecting plate includes a second plate body. The first extension is located at the upper end of the first plate body. The first extension passes upward through the lower flange of the lower chord and connects with the upper flange of the lower chord. The first extension and the flange of the second support rod are parallel to each other. From a top view, both the first plate body and the second plate body protrude beyond the outer diameter of the hanging column. The first plate body has a second extension extending downward at both ends protruding from the hanging column. The second extension is connected to the hanging column near the side edge of the hanging column. The second plate body has a third extension extending downward at both ends protruding from the hanging column. The third extension is connected to the hanging column near the side edge of the hanging column. A sealing plate is provided over the gap formed by the first plate body, the second plate body and the hanging column.

[0020] Furthermore, the lengths of the first plate and the second plate in the vertical direction are less than 60 mm; the lengths of the second extension and the third extension in the vertical direction are greater than 190 mm.

[0021] Furthermore, the roof truss structure also includes a connecting node, which includes a sliding cylinder and two supporting plates. The sliding cylinder extends vertically, one supporting plate is located at the upper end of the sliding cylinder, and the other supporting plate is located at the lower end of the sliding cylinder. The lower end of the hanging column is provided with an abutment platform. The sliding cylinder is slidably fitted onto the hanging column, and the bottom of the supporting plate located below abuts against the upper surface of the abutment platform. The upper surface of the abutment platform is provided with a gasket. The sliding cylinder is provided with multiple connecting plates spaced apart along its circumference. The multiple connecting plates extend radially along the sliding cylinder, and the connecting plates are used to connect with the floor beam.

[0022] Furthermore, the connection node also includes multiple mounting plates and multiple threaded fasteners. The floor beam is an I-beam, and the web of the floor beam and the connection plate are spaced apart and directly opposite each other. Each floor beam has a mounting plate on both sides of its web and the connection plate. The mounting plate includes a connected third plate and a fourth plate. The third plate is located on one side of the web of the floor beam, and the fourth plate is located on one side of the connection plate. Some of the threaded fasteners pass through the third plate, the web of the floor beam, and the third plate in sequence to fasten the third plate to the web of the floor beam. The remaining threaded fasteners pass through the fourth plate, the connection plate, and the fourth plate in sequence to fasten the fourth plate to the connection plate.

[0023] Furthermore, the interval between the web of the floor beam and the connecting plate is 13mm-17mm.

[0024] Compared with the prior art, the roof truss structure of this utility model has the following advantages: The first and second web members are located between the first upper chord and the lower chord, and the third web member is located between the second upper chord and the lower chord. The first, second, and third web members are inclined, with the inclination directions of the first and second web members being different. The first upper chord, lower chord, and first web members together form a structural triangle, ensuring the structural stability of the truss. The upper end of the first support member is connected to the connection point of the first upper chord and the first web member, and the lower end of the first support member is connected to... The lower chord is connected, the upper end of the support column is directly opposite the lower end of the first support rod, the upper end of the second support rod is connected to the connection point of the first and second upper chords, and the lower end of the second support rod is connected to the lower chord. The upper end of the hanging column is directly opposite the lower end of the second support rod. The addition of the first and second support rods does not disrupt the triangular structure between the web members and the first, second, and lower chords. Furthermore, the extension direction of the first support rod is consistent with the extension direction of the support column, and the extension direction of the second support rod is consistent with the extension direction of the hanging column. The first and second support rods can bear the load of the support column and the hanging column, avoiding the direct connection between the support column and the hanging column and the lower chord, which would generate shear force on the lower chord, reduce the possibility of deformation of the lower chord, increase the structural stability of the lower chord, and thus ensure the structural stability of the truss. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the roof truss structure according to an embodiment of this utility model;

[0026] Figure 2 yes Figure 1 Enlarged view at point A;

[0027] Figure 3 yes Figure 1 Enlarged view at point B;

[0028] Figure 4 yes Figure 3 A cross-sectional view along the dd direction;

[0029] Figure 5 yes Figure 1 Enlarged view at point C;

[0030] Figure 6 yes Figure 5 A cross-sectional view along the ee direction;

[0031] Figure 7 yes Figure 5 A cross-sectional view in the ff direction;

[0032] In the diagram, 1 is the truss; 101 is the first upper chord; 1011 is the first rib; 102 is the second upper chord; 1021 is the second rib; 103 is the lower chord; 104 is the first support member; 105 is the second support member; 106 is the first web member; 107 is the second web member; 108 is the third web member; 109 is the extended web; 110 is the fourth web member; and 111 is the fifth web member.

[0033] 2. Support columns;

[0034] 3. Hanging column; 301. First connecting plate; 3011. First extension; 3012. First plate; 3013. Second extension; 302. Second connecting plate; 3021. Second plate; 3022. Third extension; 303. Sealing plate; 304. Abutment platform; 305. Gasket;

[0035] 4. Floor beams;

[0036] 5. Connection node; 501. Slide cylinder; 502. Support plate; 503. Connecting plate; 504. Mounting plate; 505. Threaded fastener. Detailed Implementation

[0037] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0038] In this description of the utility model, the terms "upper," "lower," "left," "right," "front," "rear," "inner," "outer," "lateral," and "longitudinal," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are used solely for the convenience of describing the utility model and for simplifying the description, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0039] In this description of the utility model, the terms "provided with," "set up," "connected," and "placed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0041] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.

[0042] like Figure 1 As shown, a roof truss structure according to an embodiment of the present invention includes:

[0043] Truss 1 includes a first upper chord 101, a second upper chord 102, a lower chord 103, a first support member 104, a second support member 105, a first web member 106, a second web member 107, and a third web member 108.

[0044] Both the second upper chord 102 and the lower chord 103 extend in the front-to-back direction, and are spaced apart in the vertical direction. The front end of the second upper chord 102 is located behind the front end of the lower chord 103. The first upper chord 101 is inclined, and its two ends are connected to the front end of the first upper chord 101 and the front end of the lower chord 103, respectively.

[0045] Both the first support rod 104 and the second support rod 105 extend vertically. The two ends of the first support rod 104 are respectively disposed on the first upper chord 101 and the lower chord 103. The two ends of the second support rod 105 are respectively connected to the connection between the first upper chord 101 and the second upper chord 102, and to the lower chord 103.

[0046] The first web member 106 is inclined, and its two ends are respectively connected to the connection between the first upper chord 101 and the first support rod 104 and the lower chord 103; the second web member 107 is inclined, and the inclination direction of the second web member 107 is opposite to that of the first web member 106, and its two ends are respectively connected to the connection between the first upper chord 101 and the second upper chord 102 and the connection between the first web member 106 and the lower chord 103; the third web member 108 is inclined, and the inclination direction of the third web member 108 is opposite to that of the second web member 107, and its two ends are respectively connected to the connection between the first upper chord 101 and the second upper chord 102 and the lower chord 103.

[0047] Support column 2, the upper end of which is connected to the lower chord 103 and is located directly below the first support rod 104;

[0048] The upper end of the hanging column 3 is connected to the lower chord 103 and is located directly below the second support rod 105;

[0049] Floor beam 4 is detachably installed at the lower end of hanging column 3.

[0050] Based on the above technical solution, the first web member 106 and the second web member 107 are disposed between the first upper chord member 101 and the lower chord member 103, and the third web member 108 is disposed between the second upper chord member 102 and the lower chord member 103. The first web member 106, the second web member 107, and the third web member 108 are inclined, with the inclination direction of the first web member 106 different from that of the second web member 107, and the inclination direction of the second web member 107 different from that of the third web member 108. The first upper chord member 106... 1. The lower chord 103 and the first web member 106 form a structural triangle, the first upper chord 101, the first web member 106, and the second web member 107 form a structural triangle, and the second web member 107, the third web member 108, and the lower chord 103 form a structural triangle, which ensures the structural stability of truss 1; the upper end of the first support member 104 is connected to the connection point of the first upper chord 101 and the first web member 106, and the lower end of the first support member 104 is connected to the lower chord 103. The upper end of support column 2 is directly opposite the lower end of the first support rod 104. The upper end of the second support rod 105 is connected to the connection point of the first upper chord 101 and the second upper chord 102, and the lower end of the second support rod 105 is connected to the lower chord 103. The upper end of the hanging column 3 is directly opposite the lower end of the second support rod 105. The addition of the first support rod 104 and the second support rod 105 does not disrupt the triangular structure between the web member and the first upper chord 101, the second upper chord 102, and the lower chord 103. The extension direction of the strut 104 is consistent with the extension direction of the support column 2, and the extension direction of the second support rod 105 is consistent with the extension direction of the hanging column 3. The first support rod 104 and the second support rod 105 can bear the load of the support column 2 and the hanging column 3, avoiding the support column 3 being directly connected to the lower chord 103 alone, generating shear force on the lower chord 103, reducing the possibility of deformation of the lower chord 103, increasing the structural stability of the lower chord 103, thereby ensuring the structural stability of the truss 1.

[0051] Preferably, such as Figure 2As shown, the first upper chord 101, the second upper chord 102, the second web member 107, and the third web member 108 are all I-beams. A first rib 1011 is provided between the two flanges of the first upper chord 101. The first rib 1011 is perpendicular to the web and flanges of the first upper chord 101. The lower end of the first rib 1011 passes through the lower flange of the first upper chord 101 and smoothly connects to the upper flange of the second web member 107. The first rib 1011 is welded to the lower flange of the first upper chord 101. The second upper chord 102... A second rib 1021 is provided between the wing plates. The second rib 1021 is perpendicular to the web and wing plates of the second upper chord 102. The lower end of the second rib 1021 passes through the lower wing plate of the second upper chord 102 and smoothly connects with the upper wing plate of the third web 108. The lower wing plate of the second web 107 smoothly connects with the lower wing plate of the third web 108. The lower wing plate of the first upper chord 101, the lower wing plate of the second upper chord 102, the rear end of the second web 107, and the front end of the third web 108 enclose and define the extended web 109. The connection between the first upper chord 101 and the second upper chord 102 also connects to the ends of the second web member 107, the third web member 108, and the second support member 105, which easily leads to structural and stress concentration. To address this, the structural strength at the connection between the first upper chord 101 and the second upper chord 102 is increased by setting a first rib 1011 and a second rib 1021. The lower end of the first rib 1011 passes through the lower flange of the first upper chord 101 and smoothly connects to the upper flange of the second web member 107. The lower end of the second rib 1021 passes through the lower flange of the second upper chord 102 and smoothly connects to the upper flange of the third web member 108. The lower flange of the second web member 107 connects to the end of the second upper chord 107. The lower flanges of the three web members 108 are smoothly connected, ensuring structural stability of force among the components and avoiding structural damage caused by stress concentration and sudden stress changes, thereby improving the overall load-bearing performance of the structure. The lower flanges of the first upper chord 101, the lower flanges of the second upper chord 102, the rear end of the second web member 107, and the front end of the third web member 108 enclose and define the extended web 109, which indirectly expands the load-bearing area at the connection between the first upper chord 101 and the second upper chord 102. This can reduce stress concentration to a certain extent, effectively reduce the pressure at the connection, extend the service life of the stringers, and ensure their structural stability.

[0052] More preferably, the second support rod 105 is an I-beam. The upper ends of the two flanges of the second support rod 105 pass upward sequentially through the flanges of the second web member 107 and the third web member 108 that are smoothly connected, and the lower flange of the second upper chord member 102, and are connected to the upper flange of the second upper chord member 102. The flange of the third web member 108 passes upward sequentially through the flanges of the second web member 107 and the third web member 108 that are smoothly connected, and the lower flange of the second upper chord member 102, and is connected to the upper flange of the second upper chord member 102. The flange of the second support rod 105 is connected to the extended web member 109, and the connection strength between the second support rod 105 and the extended web member 109 is higher, increasing the structural stability of the connection.

[0053] Preferably, the truss 1 further includes a plurality of fourth web members 110 and a plurality of fifth web members 111;

[0054] The fourth web member 110 is inclined and located behind the third web member 108. The inclination direction of the fourth web member 110 is opposite to that of the third web member 108. Multiple fourth web members 110 are spaced apart in the front-back direction. The two ends of the fourth web member 110 are connected to the second upper chord 102 and the lower chord 103, respectively.

[0055] The fifth abdominal rod 111 is inclined and located behind the third abdominal rod 108. The fifth abdominal rod 111 is inclined in the opposite direction to the fourth abdominal rod 110. Multiple fifth abdominal rods 111 are spaced apart in the front-back direction. The two ends of the fifth abdominal rod 111 are respectively connected to the ends of the adjacent fourth abdominal rod 110.

[0056] The front end of the fourth web member 110, located at the foremost side, is connected to the rear end of the third web member 108.

[0057] The fourth web member 110, the fifth web member 111, the second upper chord member 102, and the lower chord member 103 form multiple structural triangles that can ensure the structural strength between the second upper chord member 102 and the lower chord member 103.

[0058] More preferably, such as Figure 3 , 4As shown, the lower chord 103 is an I-beam. The lower end of the flange of the second support rod 105 passes downward through the upper flange of the lower chord 103 and is connected to the lower flange of the lower chord 103. The flange of the second support rod 105 is welded to the upper flange of the lower chord 103. A first connecting plate 301 and a second connecting plate 302 are provided perpendicularly between the upper end of the hanging column 3 and the lower chord 103. The first connecting plate 301 includes a first extension 3011 and a first plate body 3012. The second connecting plate 302 includes a second plate body 3021. The first extension 3011 is located at the upper end of the first plate body 3012 and passes upward through the lower chord. The lower wing plate of 103 is connected to the upper wing plate of the lower chord 103. The first extension 3011 is parallel to the wing plate of the second support rod 105. From a top view, the first plate 3012 and the second plate 3021 both protrude beyond the outer diameter of the hanging column 3. The first plate 3012 is provided with a downwardly extending second extension 3013, which is welded to the hanging column 3. The second plate 3021 is provided with a downwardly extending third extension 3022, which is welded to the hanging column 3. The gap formed by the first plate 3012, the second plate 3021 and the hanging column 3 is covered with a sealing plate 303. The wing plate of the second support rod 105 extends to the lower wing plate of the lower chord 103, increasing the structural stability between the second support rod 105 and the lower chord 103, so that the axial force between the second support rod 105 and the hanging column 3 can be smoothly transmitted through the lower chord 103, reducing stress concentration points; the first extension 3011 extends upward from the first plate 3012 to the upper wing plate of the lower chord 103, and the first extension 3011 is parallel to the wing plate of the second support rod 105, increasing the structural stability between the first connecting plate 301 and the lower chord 103.

[0059] More preferably, the lengths of the first plate 3012 and the second plate 3021 in the vertical direction are less than 60 mm; the lengths of the second extension 3013 and the third extension 3022 in the vertical direction are greater than 190 mm. The lengths of the first plate 3012 and the second plate 3021 in the vertical direction are preferably 50 mm. When the lengths of the first plate 3012 and the second plate 3021 in the vertical direction are greater than 60 mm, they are easily deformed by the movement of the hanging column 3 due to torsion and compression, resulting in low load-bearing capacity and easy displacement of the hanging column 3. The lengths of the second extension 3013 and the third extension 3022 in the vertical direction are preferably 200 mm. When the lengths of the second extension 3013 and the third extension 3022 in the vertical direction are less than 190 mm, the connection area between the first connecting plate 301 and the second connecting plate 302 and the hanging column 3 is low, and the restraining effect of the first connecting plate 301 and the second connecting plate 302 on the hanging column 3 is poor, making it easy for the hanging column 3 to twist and swing, reducing the stability of the roof truss structure.

[0060] Preferably, such as Figure 5 As shown, the roof truss structure also includes a connection node 5, which includes a sliding cylinder 501 and two support plates 502. The sliding cylinder 501 extends in the vertical direction. One support plate 502 is located at the upper end of the sliding cylinder 501, and the other support plate 502 is located at the lower end of the sliding cylinder 501. The lower end of the hanging column 3 is provided with an abutment platform 304. The sliding cylinder 501 is slidably sleeved on the hanging column 3, and the bottom of the support plate 502 located below abuts against the upper end surface of the abutment platform 304. The upper end surface of the abutment platform 304 is provided with a gasket 305. The sliding cylinder 501 is provided with multiple connecting plates 503 at intervals along its circumference. The multiple connecting plates 503 extend radially along the sliding cylinder 501. The connecting plates 503 are used to connect with the floor beam 4. The connecting node 5 is slidably mounted on the sliding cylinder 501, and the supporting plate 502 located on the lower side abuts against the upper end face of the abutment platform 304, allowing the connecting node 5 to rotate on the hanging column 3. This allows it to adapt to the installation of floor beams 4 in different directions, release the bending moment of the floor beams 4, and transfer the bending moment to the other floor beams 4 through the connecting node 5. It also avoids the unbalanced bending moment generated after the installation of the floor beams 4 from being transferred to the hanging column 3, so that the hanging column 3 largely only bears the load in the vertical direction, making the structure more stable.

[0061] More preferably, the connecting node 5 also includes multiple mounting plates 504 and multiple threaded fasteners 505. The floor beam 4 is an I-beam. The web of the floor beam 4 and the connecting plate 503 are arranged opposite each other at intervals. Each floor beam 4 has a mounting plate 504 on both sides of the web and the connecting plate 503. The mounting plate 504 includes a connected third plate and a fourth plate. The third plate is located on one side of the web of the floor beam 4, and the fourth plate is located on one side of the connecting plate 503. Some of the threaded fasteners 505 pass through the third plate, the web of the floor beam 4, and the third plate in sequence to fasten the third plate to the web of the floor beam 4. The remaining threaded fasteners 505 pass through the fourth plate, the connecting plate 503, and the fourth plate in sequence to fasten the fourth plate to the connecting plate 503. The connecting plate 503 is installed between the floor beam 4 and the mounting plate 504 and the threaded fastener 505. The threaded fastener 505 has a certain degree of adjustability. With the installation of the threaded fastener 505 and the mounting plate 504, the connecting node 5 and the hanging column 3 can rotate relative to each other, which can effectively release the bending moment of the floor beam 4. The bending moment is transferred to the other floor beams 4 through the connecting node 5, and the unbalanced bending moment generated after the floor beam 4 is installed is prevented from being transferred to the hanging column 3. This makes the hanging column 3 bear the load in the vertical direction to a large extent, making the structure more stable.

[0062] More preferably, the interval between the web of the floor beam 4 and the connecting plate 503 is 13mm-17mm. The interval between the web of the floor beam 4 and the connecting plate 503 is preferably 15mm. When the interval between the web of the floor beam 4 and the connecting plate 503 is less than 13mm, the swing angle of the floor beam 4 relative to the connecting node 5 is too small, resulting in insufficient utilization of the adjustability of the threaded fastener 505 and making it difficult to adapt to floor beams 4 with different installation angles. When the interval between the web of the floor beam 4 and the connecting plate 503 is greater than 17mm, it is difficult to guarantee the connection strength between the connecting plate 503 and the floor beam 4, leading to insufficient stability of the roof truss structure.

[0063] In summary, this utility model embodiment provides a roof truss structure, wherein the first web member 106 and the second web member 107 are disposed between the first upper chord member 101 and the lower chord member 103, and the third web member 108 is disposed between the second upper chord member 102 and the lower chord member 103. The first web member 106, the second web member 107, and the third web member 108 are inclined, the inclination direction of the first web member 106 is different from the inclination direction of the second web member 107, and the inclination direction of the second web member 107 is different from the inclination direction of the third web member 108. Unlike other structures, the first upper chord 101, lower chord 103, and first web member 106 form a structural triangle; the first upper chord 101, first web member 106, and second web member 107 form a structural triangle; and the second web member 107, third web member 108, and lower chord 103 form a structural triangle, ensuring the structural stability of truss 1. The upper end of the first support member 104 is connected to the connection point of the first upper chord 101 and the first web member 106, and the lower end of the first support member 104... Connected to the lower chord 103, the upper end of the support column 2 is directly opposite the lower end of the first support rod 104. The upper end of the second support rod 105 is connected to the connection point of the first upper chord 101 and the second upper chord 102, and the lower end of the second support rod 105 is connected to the lower chord 103. The upper end of the hanging column 3 is directly opposite the lower end of the second support rod 105. The addition of the first support rod 104 and the second support rod 105 does not disrupt the triangular structure between the web member and the first upper chord 101, the second upper chord 102, and the lower chord 103. Furthermore, the extension direction of the first support rod 104 is consistent with the extension direction of the support column 2, and the extension direction of the second support rod 105 is consistent with the extension direction of the hanging column 3. The first support rod 104 and the second support rod 105 can bear the load of the support column 2 and the hanging column 3, avoiding the support column 3 being directly connected to the lower chord 103 alone, generating shear force on the lower chord 103, reducing the possibility of deformation of the lower chord 103, increasing the structural stability of the lower chord 103, thereby ensuring the structural stability of the truss 1.

[0064] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A roof truss structure, characterized in that, include: Truss (1), the truss (1) includes a first upper chord (101), a second upper chord (102), a lower chord (103), a first support rod (104), a second support rod (105), a first web member (106), a second web member (107), and a third web member (108); The second upper chord (102) and the lower chord (103) both extend in the front-to-back direction. The second upper chord (102) and the lower chord (103) are spaced apart in the vertical direction. The front end of the second upper chord (102) is located behind the front end of the lower chord (103). The first upper chord (101) is inclined. The two ends of the first upper chord (101) are respectively connected to the front end of the first upper chord (101) and the front end of the lower chord (103). The first support rod (104) and the second support rod (105) both extend in the vertical direction. The two ends of the first support rod (104) are respectively located on the first upper chord (101) and the lower chord (103). The two ends of the second support rod (105) are respectively connected to the connection between the first upper chord (101) and the second upper chord (102) and the lower chord (103). The first web member (106) is inclined, and its two ends are respectively connected to the connection between the first upper chord (101) and the first support rod (104) and the lower chord (103); the second web member (107) is inclined, and the inclination direction of the second web member (107) is opposite to that of the first web member (106), and its two ends are respectively connected to the connection between the first upper chord (101) and the second upper chord (102) and the connection between the first web member (106) and the lower chord (103); the third web member (108) is inclined, and the inclination direction of the third web member (108) is opposite to that of the second web member (107), and its two ends are respectively connected to the connection between the first upper chord (101) and the second upper chord (102) and the lower chord (103); Support column (2), the upper end of which is connected to the lower chord (103) and located directly below the first support rod (104); The upper end of the hanging column (3) is connected to the lower chord (103) and is located directly below the second support rod (105); Floor beam (4), which is detachably installed at the lower end of the hanging column (3).

2. The roof truss structure according to claim 1, characterized in that, The first upper chord (101), the second upper chord (102), the second web member (107), and the third web member (108) are all I-beams. A first rib (1011) is provided between the two flanges of the first upper chord (101). The first rib (1011) is perpendicular to the web and flanges of the first upper chord (101). The lower end of the first rib (1011) passes through the lower flange of the first upper chord (101) and smoothly connects with the upper flange of the second web member (107). A second rib (1021) is provided between the two flanges of the second upper chord (102). The second rib (1021) is perpendicular to the web and wing of the second upper chord (102). The lower end of the second rib (1021) passes through the lower wing of the second upper chord (102) and smoothly connects with the upper wing of the third web (108). The lower wing of the second web (107) smoothly connects with the lower wing of the third web (108). The lower wing of the first upper chord (101), the lower wing of the second upper chord (102), the rear end of the second web (107), and the front end of the third web (108) enclose and define an extended web (109).

3. The roof truss structure according to claim 2, characterized in that, The second support rod (105) is an I-beam. The upper ends of the two flanges of the second support rod (105) pass upward through the flanges of the second web member (107) and the third web member (108) that are smoothly connected, the lower flange of the second upper chord member (102), and are connected to the upper flange of the second upper chord member (102).

4. The roof truss structure according to claim 1, characterized in that, The truss (1) also includes multiple fourth web members (110) and multiple fifth web members (111); The fourth abdominal rod (110) is inclined and located behind the third abdominal rod (108). The inclination direction of the fourth abdominal rod (110) is opposite to that of the third abdominal rod (108). Multiple fourth abdominal rods (110) are spaced apart in the front-back direction. The two ends of the fourth abdominal rod (110) are respectively connected to the second upper chord (102) and the lower chord (103). The fifth abdominal rod (111) is inclined and located behind the third abdominal rod (108). The fifth abdominal rod (111) is inclined in the opposite direction to the fourth abdominal rod (110). Multiple fifth abdominal rods (111) are spaced apart in the front-back direction. The two ends of the fifth abdominal rod (111) are respectively connected to the ends of the adjacent fourth abdominal rod (110). The front end of the fourth abdominal rod (110) located at the foremost side is connected to the rear end of the third abdominal rod (108).

5. The roof truss structure according to claim 1, characterized in that, The lower chord (103) is an I-beam. The lower end of the flange of the second support rod (105) passes downward through the upper flange of the lower chord (103) and is connected to the lower flange of the lower chord (103). A first connecting plate (301) and a second connecting plate (302) perpendicular to each other are provided between the upper end of the hanging column (3) and the lower chord (103). The first connecting plate (301) includes a first extension (3011) and a first plate body (3012). The second connecting plate (302) includes a second plate body (3021). The first extension (3011) is located at the upper end of the first plate body (3012). The first extension (3011) passes upward through the lower flange of the lower chord (103) and is connected to the lower chord (103). The upper wing plate is connected to the first extension (3011) and the wing plate of the second support rod (105) are parallel to each other. From a top view, the first plate (3012) and the second plate (3021) both protrude beyond the outer diameter of the hanging column (3). The first plate (3012) is provided with a downwardly extending second extension (3013), which is welded to the hanging column (3). The second plate (3021) is provided with a downwardly extending third extension (3022), which is welded to the hanging column (3). The gap formed by the first plate (3012), the second plate (3021) and the hanging column (3) is covered with a sealing plate (303).

6. The roof truss structure according to claim 5, characterized in that, The length of the first plate (3012) and the second plate (3021) in the vertical direction is less than 60 mm; the length of the second extension (3013) and the third extension (3022) in the vertical direction is greater than 190 mm.

7. The roof truss structure according to claim 1, characterized in that, It also includes a connecting node (5), which includes a sliding cylinder (501) and two supporting plates (502). The sliding cylinder (501) extends vertically. One supporting plate (502) is located at the upper end of the sliding cylinder (501), and the other supporting plate (502) is located at the lower end of the sliding cylinder (501). The lower end of the hanging column (3) is provided with an abutment platform (304). The sliding cylinder (501) is slidably fitted onto the support platform. The bottom of the support plate (502) located on the hanging column (3) and below it abuts against the upper end face of the abutment platform (304). The upper end face of the abutment platform (304) is provided with a gasket (305). The slide cylinder (501) is provided with a plurality of connecting plates (503) spaced apart along its circumference. The plurality of connecting plates (503) extend radially along the slide cylinder (501). The connecting plates (503) are used to connect with the floor beam (4).

8. The roof truss structure according to claim 7, characterized in that, The connecting node (5) also includes multiple mounting plates (504) and multiple threaded fasteners (505). The floor beam (4) is an I-beam. The web of the floor beam (4) and the connecting plate (503) are arranged opposite each other at intervals. Each floor beam (4) has a mounting plate (504) on both sides of the web and the connecting plate (503). The mounting plate (504) includes a connected third plate and a fourth plate. The third plate is located on the web of the floor beam (4). On one side, the fourth plate is located on one side of the connecting plate (503). Part of the threaded fasteners (505) pass through the third plate, the web of the floor beam (4), and the third plate in sequence to fasten the third plate to the web of the floor beam (4). The remaining threaded fasteners (505) pass through the fourth plate, the connecting plate (503), and the fourth plate in sequence to fasten the fourth plate to the connecting plate (503).

9. The roof truss structure according to claim 7, characterized in that, The interval between the web of the floor beam (4) and the connecting plate (503) is 13mm-17mm.

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