Main and auxiliary steel beam connecting node structure of bamboo-hat-shaped roof steel structure

Abstract

The utility model discloses a main and auxiliary steel beam connecting node structure of a bamboo-hat-shaped roof steel structure. The main and auxiliary steel beam connecting node structure comprises a main steel beam, a fixing plate, an auxiliary steel beam, a fastening bolt and a triangular connecting plate, one end of the fixing plate is fixedly connected with a web of the main steel beam, the plate face direction of the fixing plate is parallel to the plate face direction of a web of the auxiliary steel beam, and the web of the auxiliary steel beam is attached to the fixing plate and locked and fixed through a plurality of fastening bolts, so that the main steel beam is fixedly connected with the auxiliary steel beam. The two triangular connecting plates are fixedly connected between the upper flange plate and the lower flange plate of the main steel beam and between the upper flange plate and the lower flange plate of the auxiliary steel beam respectively, and the two triangular connecting plates are arranged on the two sides of the auxiliary steel beam respectively. The utility model relates to the technical field of steel structure construction, and can solve the problem of low structural strength of a connection node of main and auxiliary steel beams in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of steel structure construction, in particular to a main and auxiliary steel beam connection node structure of a bamboo hat-shaped roof steel structure. Background Art

[0002] In construction projects, steel structure is one of the main load-bearing structures in buildings, and steel structure roofs are widely used in roof construction. The existing roof structures include flat roofs, bamboo hat-shaped roofs, etc. For bamboo hat-shaped roof structures, when the main steel beam and the auxiliary steel beam are connected, the plate surfaces of the flange plates at the connection nodes of the main steel beam and the auxiliary steel beam are aligned to ensure the force stability of the connection nodes of the main and auxiliary steel beams.

[0003] At present, it is usually necessary to cut the connection nodes of the main steel beam and the auxiliary steel beam so that the plate surface of the flange plate can be completely aligned and fixed before welding, otherwise it is easy to cause poor force transmission effect at the connection node. However, there may be residual stress and residual deformation at the connection nodes of the main steel beam and the auxiliary steel beam after cutting and welding, resulting in low structural strength at the connection nodes of the main and auxiliary steel beams, thereby adversely affecting the overall strength and stability of the steel structure. Therefore, it is necessary to provide a main and auxiliary steel beam connection node structure of a conical roof steel structure, which can solve the problem of low structural strength at the connection nodes of the main and auxiliary steel beams in the prior art. Summary of the invention

[0004] The utility model aims to provide a main and auxiliary steel beam connection node structure of a conical roof steel structure, which can solve the problem of low structural strength at the main and auxiliary steel beam connection nodes in the prior art.

[0005] The utility model is achieved in this way:

[0006] A main and secondary steel beam connection node structure of a bamboo hat-shaped roof steel structure comprises a main steel beam, a fixing plate, a secondary steel beam, fastening bolts and a triangular connection plate; one end of the fixing plate is fixedly connected to the web of the main steel beam, the plate surface direction of the fixing plate is parallel to the plate surface direction of the web of the secondary steel beam, the web of the secondary steel beam is fitted on the fixing plate and is locked and fixed by a plurality of fastening bolts, so that the main steel beam and the secondary steel beam are fixedly connected; two triangular connection plates are respectively fixedly connected between the upper and lower flange plates of the main steel beam and the upper and lower flange plates of the secondary steel beam, and two triangular connection plates are arranged on both sides of the secondary steel beam.

[0007] The two surfaces of the web of the main steel beam are respectively provided with reinforcement structures, one end of the fixed plate is fixedly connected to the reinforcement structure; the top and bottom of the reinforcement structure are respectively fixedly connected to the upper and lower flange plates of the main steel beam.

[0008] The reinforcement structure includes a reinforcement plate and a support strip. The reinforcement plate is fitted on the web of the main steel beam. A pair of support strips are respectively arranged along the top and bottom of the reinforcement plate, and a pair of support strips are respectively connected to the upper and lower flange plates of the main steel beam.

[0009] The support bar is a long strip structure with a triangular cross section, and two faces of the triangle are respectively arranged to fit the reinforcing plate and the flange plate of the main steel beam.

[0010] The reinforcing plate and the supporting strip are arranged throughout the web of the main steel beam.

[0011] The fixing plate comprises a pair of fixing unit plates, which are respectively attached to the two surfaces of the web of the auxiliary steel beam. A plurality of fastening bolts penetrate and connect the pair of fixing unit plates and the web of the auxiliary steel beam and are fastened and fixed by nuts.

[0012] The ends of the pair of fixed unit plates connected to the reinforcement structure are in a trapezoidal structure, so that one end of the pair of fixed unit plates can fit tightly with the reinforcement plate and the pair of support bars.

[0013] The first side of the triangular connecting plate is fitted and connected to the flange plate of the main steel beam, and the second side of the triangular connecting plate is fitted and connected to the flange plate of the auxiliary steel beam. The flange plate of the main steel beam, the flange plate of the auxiliary steel beam and the triangular connecting plate are located in the same plane.

[0014] A plurality of reinforcing ribs are arranged at equal intervals between the third sides of the two triangular connecting plates, and the reinforcing ribs are arranged perpendicular to the two triangular connecting plates.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The utility model is provided with a fixing plate and fastening bolts, one end of the fixing plate is prefabricated and fixed on the main steel beam according to the design structure of the main and secondary steel beam connection node of the conical roof steel structure, and the other end of the fixing plate is connected to the secondary steel beam by the fastening bolts. While ensuring the reliability of the main and secondary steel beam connection nodes, it can avoid the influence of the residual stress and residual deformation of the traditional cutting and welding process on the bearing and deformation performance of the main and secondary steel beam connection nodes, and make the installation of the steel structure more convenient and efficient, with a wide range of use, and is particularly suitable for the construction of the main and secondary steel beam connection nodes of the conical roof steel structure.

[0017] 2. The utility model is provided with a reinforcement structure, which increases the cross-sectional area of ​​the web of the main steel beam through the reinforcement plate, reinforces the web and the upper and lower flange plates of the main steel beam through the support strip, and the fixed plate is connected between the reinforcement plate and the support strip, so that the main steel beam and the auxiliary steel beam are subjected to force synergistically, thereby ensuring the structural strength of the connection node between the main and auxiliary steel beams and improving the overall force-bearing performance of the steel structure.

[0018] 3. The utility model is provided with a triangular connecting plate and reinforcing ribs, and the upper and lower flange plates of the main steel beam and the auxiliary steel beam are fixedly connected by the triangular connecting plate, thereby enhancing the constraint of the end of the auxiliary steel beam and reducing its length coefficient, thereby increasing the critical stress of the auxiliary steel beam and further improving the stability of the auxiliary steel beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the main and auxiliary steel beam connection node structure of the bamboo hat-shaped roof steel structure of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the main steel beam, the reinforcement structure and the fixing plate in the main and auxiliary steel beam connection node structure of the bamboo hat-shaped roof steel structure of the utility model;

[0021] Figure 3 It is a structural schematic diagram of the reinforcement structure in the main and auxiliary steel beam connection node structure of the conical roof steel structure of the utility model;

[0022] Figure 4 It is a structural schematic diagram of a fixed plate in a main and auxiliary steel beam connection node structure of a bamboo hat-shaped roof steel structure of the utility model;

[0023] Figure 5 yes Figure 1 A magnified schematic diagram of center A.

[0024] In the figure, 1 is the main steel beam, 2 is the reinforcement plate, 3 is the support bar, 4 is the fixed plate, 401 is the fixed unit plate, 5 is the auxiliary steel beam, 6 is the fastening bolt, 7 is the triangular connecting plate, and 8 is the reinforcement rib. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0026] Please see attached Figure 1 A main and secondary steel beam connection node structure of a conical roof steel structure, comprising a main steel beam 1, a fixing plate 4, a secondary steel beam 5, fastening bolts 6 and a triangular connecting plate 7; one end of the fixing plate 4 is fixedly connected to the web of the main steel beam 1, the plate surface direction of the fixing plate 4 is parallel to the plate surface direction of the web of the secondary steel beam 5, the web of the secondary steel beam 5 is fitted on the fixing plate 4 and is locked and fixed by a plurality of fastening bolts 6, so that the main steel beam 1 and the secondary steel beam 5 are fixedly connected; two triangular connecting plates 7 are respectively fixedly connected between the upper and lower flange plates of the main steel beam 1 and the upper and lower flange plates of the secondary steel beam 5, and two triangular connecting plates 7 are arranged on both sides of the secondary steel beam 5.

[0027] The fixing plate 4 and the main steel beam 1 can be pre-welded in the factory according to the main and auxiliary steel beam connection node structure of the conical roof steel structure during prefabrication, and the number of fixing plates 4 can be determined according to the number of auxiliary steel beams 5 required to be connected to the main steel beam 1. At the construction site, the main steel beam 1 and the auxiliary steel beam 5 are quickly connected through the fixing plate 4 via the fastening bolts 6. When the main and auxiliary steel beams of the conical roof steel structure are connected, there is no need to cut and weld the main steel beam 1 and the auxiliary steel beam 5, which can not only ensure the reliable connection of the main and auxiliary steel beam connection nodes, but also avoid the influence of the residual stress and residual deformation of the cutting and welding process on the bearing and deformation performance at the nodes.

[0028] By setting up four triangular connecting plates 7, which are respectively connected between the upper flange plate and the lower flange plate of the main steel beam 1 and the upper flange plate and the lower flange plate on both sides of one end where the auxiliary steel beam 5 is connected to the main steel beam 1, the constraint on the end of the auxiliary steel beam 5 is enhanced, and its length coefficient is reduced, thereby increasing the critical stress of the auxiliary steel beam 5 and further improving the stability of the auxiliary steel beam 5.

[0029] Please see attached Figure 1 and attached Figure 2 The two surfaces of the web of the main steel beam 1 are respectively provided with reinforcing structures, and one end of the fixed plate 4 is fixedly connected to the reinforcing structure; the top and bottom of the reinforcing structure are respectively fixedly connected to the upper and lower flange plates of the main steel beam 1.

[0030] The structural strength of the main steel beam 1 is improved by the reinforcement structure. The reinforcement structure is set on both sides of the web of the main steel beam 1, and the overall force of the main steel beam 1 is stable and uniform. The fixed plate 4 is connected to the reinforcement structure on the connecting side of the auxiliary steel beam 5. The reinforcement structure and the main steel beam 1 are coordinated to bear force, and the structural strength at the connection node of the main and auxiliary steel beams is improved, thereby improving the overall force performance of the steel structure.

[0031] Please see attached Figure 1 To Attachment Figure 3 The reinforcement structure includes a reinforcement plate 2 and a support bar 3. The reinforcement plate 2 is fitted on the web of the main steel beam 1. A pair of support bars 3 are respectively arranged along the top and bottom of the reinforcement plate 2, and the pair of support bars 3 are respectively connected to the upper and lower flange plates of the main steel beam 1.

[0032] The cross-sectional area of ​​the web of the main steel beam 1 is increased by the reinforcing plate 2, thereby improving the coordinated force-bearing performance of the main steel beam 1; a pair of support bars 3 are respectively connected between the upper flange plate and the lower flange plate of the main steel beam 1 and the reinforcing plate 2, thereby further improving the coordinated force-bearing performance of the main steel beam 1.

[0033] Please see attached Figure 3 The support bar 3 is a long strip structure with a triangular cross-section, and two faces of the triangle are respectively attached to the reinforcing plate 2 and the upper / lower flange plates of the main steel beam 1.

[0034] The triangular structure has high stability and strong bearing capacity, which ensures the mechanical properties of the upper flange plate and the lower flange plate of the main steel beam 1.

[0035] Please see attached Figure 1 and attached Figure 2 The reinforcing plate 2 and the supporting strip 3 are arranged throughout the web of the main steel beam 1 to ensure the structural strength of the main steel beam 1 at any position and to make the overall stress of the main steel beam 1 uniform.

[0036] Please refer to the attached drawings, the fixing plate 4 includes a pair of fixing unit plates 401, and the pair of fixing unit plates 401 are respectively attached to the two surfaces of the web of the auxiliary steel beam 5, and a plurality of fastening bolts 6 penetrate and connect the pair of fixing unit plates 401 and the web of the auxiliary steel beam 5 and are fastened and fixed by nuts.

[0037] The pair of fixed unit plates 401 can be made of steel plates, set according to the size of the connection node of the main and auxiliary steel beams, and prefabricated and welded on the main steel beam 1. Preferably, two rows of six screw holes are reserved on the webs of the pair of fixed unit plates 401 and the auxiliary steel beam 5, and six fastening bolts 6 are passed through and locked on the webs of the pair of fixed unit plates 401 and the auxiliary steel beam 5 to ensure the connection reliability of the connection node of the main and auxiliary steel beams, and at the same time, the construction convenience and efficiency of the connection node of the main and auxiliary steel beams can be improved.

[0038] Please see attached Figure 2 The end of the pair of fixed unit plates 401 connected to the reinforcing structure is in a trapezoidal structure, so that one end of the pair of fixed unit plates 401 can fit tightly with the reinforcing plate 2 and the pair of support bars 3.

[0039] The end shape of a pair of fixed unit plates 401 is set according to the shape and spacing of a pair of support bars 3, which can ensure that the ends of the fixed unit plates 401 are tightly fitted with the reinforcing plates 2 and the pair of support bars 3, and are fixed by full welding, thereby ensuring the connection strength between the fixed unit plates 401 and the main steel beam 1.

[0040] Please see attached Figure 5 The first side of the triangular connecting plate 7 is fitted and connected to the flange plate of the main steel beam 1, and the second side of the triangular connecting plate 7 is fitted and connected to the flange plate of the auxiliary steel beam 5. The flange plate of the main steel beam 1, the flange plate of the auxiliary steel beam 5 and the triangular connecting plate 7 are located in the same plane, ensuring the force transmission effect between the main steel beam 1 and the auxiliary steel beam 5, thereby avoiding stress concentration at the connection node of the main and auxiliary steel beams and affecting the structural strength.

[0041] Please see attached Figure 5 A plurality of reinforcing ribs 8 are arranged at equal intervals between the third sides of the two triangular connecting plates 7 , and the reinforcing ribs 8 are arranged perpendicular to the two triangular connecting plates 7 .

[0042] Preferably, three reinforcing ribs 8 may be arranged at equal intervals. The reinforcing ribs 8 are used to provide support and reinforcement for the vertical force of the two triangular connecting plates 7, which can further improve the structural strength of the connection node between the main steel beam 1 and the auxiliary steel beam 5.

[0043] Please see attached Figure 1 To Attachment Figure 5 , the installation method of the utility model is:

[0044] The main steel beam 1 and the auxiliary steel beam 5 are made of I-beams, which include a web and upper and lower flange plates at the top and bottom of the web. When the main steel beam 1 is manufactured, two reinforcing plates 2 are set on the two faces of the web of the main steel beam 1. The support bars 3 can be triangular steel bars, and the four support bars 3 are symmetrically connected to the two reinforcing plates 2, the bottom surfaces on both sides of the upper flange plate of the main steel beam 1, and the top surfaces on both sides of the lower flange plate of the main steel beam 1. The main steel beam 1, the two reinforcing plates 2 and the four support bars 3 can be fixed by welding to improve the structural strength and bearing capacity of the main steel beam 1.

[0045] According to the design of the main and secondary steel beam connection nodes of the conical roof steel structure, one end of a pair of fixed unit plates 401 of the fixed plate 4 is cut into a trapezoidal structure matching the reinforcement structure, so that one end of a pair of fixed unit plates 401 is welded and fixed between the reinforcement plate 2 and the two support bars 3, and the spacing between the pair of fixed unit plates 401 is consistent with the web thickness of the secondary steel beam 5, and the height of the pair of fixed unit plates 401 does not exceed the spacing between the upper and lower flange plates of the secondary steel beam 5.

[0046] When the secondary steel beam 5 is manufactured, six bolt holes are reserved at corresponding positions on the web of the secondary steel beam 5 and a pair of fixed unit plates 401. The secondary steel beam 5 is hoisted onto the main steel beam 1, and the web of the secondary steel beam 5 is inserted between the pair of fixed unit plates 401. Six fastening bolts 6 and matching nuts are passed through and locked to the pair of fixed unit plates 401 and the web of the secondary steel beam 5.

[0047] A triangular connecting plate 7 is welded between the upper flange plate of the main steel beam 1 and the upper flange plate of the auxiliary steel beam 5. The triangular connecting plate 7 can be made according to the connection angle between the main steel beam 1 and the auxiliary steel beam 5. It is usually an equilateral right triangle to ensure stable connection and force transmission between the upper flange plates of the main steel beam 1 and the auxiliary steel beam 5. Similarly, another triangular connecting plate 7 is welded between the lower flange plate of the main steel beam 1 and the lower flange plate of the auxiliary steel beam 5.

[0048] Three reinforcing ribs 8 are arranged at equal intervals between the two triangular connecting plates 7, and the two triangular connecting plates 7 are vertically welded and fixed to the three reinforcing ribs 8. The reinforcing ribs 8 can be made of steel columns.

[0049] In the construction of the conical roof steel structure, all the connection nodes of the main steel beams 1 and the auxiliary steel beams 5 are connected and fixed in the above-mentioned manner, and the construction of the remaining steel components of the steel structure is carried out using conventional processes, which will not be repeated here, so that all steel components are connected to form a conical roof steel structure.

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A main and auxiliary steel beam connection node structure of a bamboo hat-shaped roof steel structure, characterized by: The invention comprises a main steel beam (1), a fixing plate (4), a secondary steel beam (5), fastening bolts (6) and a triangular connecting plate (7); one end of the fixing plate (4) is fixedly connected to the web of the main steel beam (1), the plate surface direction of the fixing plate (4) is parallel to the plate surface direction of the web of the secondary steel beam (5), the web of the secondary steel beam (5) is fitted on the fixing plate (4) and is locked and fixed by a plurality of fastening bolts (6), so that the main steel beam (1) and the secondary steel beam (5) are fixedly connected; two triangular connecting plates (7) are respectively fixedly connected between the upper and lower flange plates of the main steel beam (1) and the upper and lower flange plates of the secondary steel beam (5), and two triangular connecting plates (7) are arranged on both sides of the secondary steel beam (5).

2. The main and auxiliary steel beam connection node structure of the bamboo hat-shaped roof steel structure according to claim 1 is characterized by: Reinforcement structures are respectively provided on the two surfaces of the web of the main steel beam (1), and one end of the fixed plate (4) is fixedly connected to the reinforcement structure; the top and bottom of the reinforcement structure are respectively fixedly connected to the upper and lower flange plates of the main steel beam (1).

3. The main and auxiliary steel beam connection node structure of the bamboo hat-shaped roof steel structure according to claim 2 is characterized by: The reinforcement structure comprises a reinforcement plate (2) and a support strip (3); the reinforcement plate (2) is arranged on the web of the main steel beam (1); a pair of support strips (3) are arranged along the top and bottom of the reinforcement plate (2), respectively; and the pair of support strips (3) are connected to the upper and lower flange plates of the main steel beam (1), respectively.

4. The main and auxiliary steel beam connection node structure of the bamboo hat-shaped roof steel structure according to claim 3 is characterized by: The support bar (3) is a long strip structure with a triangular cross section, and two faces of the triangle are respectively fitted to the reinforcing plate (2) and the flange plate of the main steel beam (1).

5. The main and auxiliary steel beam connection node structure of the bamboo hat-shaped roof steel structure according to claim 3 or 4 is characterized in that: The reinforcing plate (2) and the supporting strip (3) are arranged throughout the web of the main steel beam (1).

6. The main and auxiliary steel beam connection node structure of the bamboo hat-shaped roof steel structure according to claim 1 or 2 is characterized in that: The fixing plate (4) comprises a pair of fixing unit plates (401), the pair of fixing unit plates (401) being respectively attached to two surfaces of the web of the auxiliary steel beam (5), and a plurality of fastening bolts (6) passing through and connecting the pair of fixing unit plates (401) and the web of the auxiliary steel beam (5) and being fastened and fixed by nuts.

7. The main and auxiliary steel beam connection node structure of the bamboo hat-shaped roof steel structure according to claim 6 is characterized by: One end of the pair of fixed unit plates (401) connected to the reinforcement structure is in a trapezoidal structure, so that one end of the pair of fixed unit plates (401) can fit tightly with the reinforcement plate (2) and the pair of support bars (3).

8. The main and auxiliary steel beam connection node structure of the bamboo hat-shaped roof steel structure according to claim 1 is characterized by: The first side of the triangular connecting plate (7) is fitted and connected to the flange plate of the main steel beam (1), and the second side of the triangular connecting plate (7) is fitted and connected to the flange plate of the auxiliary steel beam (5). The flange plate of the main steel beam (1), the flange plate of the auxiliary steel beam (5) and the triangular connecting plate (7) are located in the same plane.

9. The main and auxiliary steel beam connection node structure of the bamboo hat-shaped roof steel structure according to claim 8 is characterized by: A plurality of reinforcing ribs (8) are arranged at equal intervals between the third sides of the two triangular connecting plates (7), and the reinforcing ribs (8) are arranged perpendicular to the two triangular connecting plates (7).

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