A rigid connection node and construction method thereof

Abstract

The present invention provides a rigid connection node and a construction method thereof, including an I-beam, a rectangular steel pipe and a stiffening rib. The I-beam includes a flange plate and a web plate. The rectangular steel pipe is arranged on the side of the I-beam and is provided with a yielding portion adapted to the flange plate. The stiffening rib is arranged between the I-beam and the rectangular steel pipe, and is connected to the I-beam and the rectangular steel pipe at the same time. The rigid connection node provided by the present invention changes the traditional node connection method, so that the internal force of the node out of the rod can be effectively transmitted, the purpose of the rigid area is achieved, and it is also consistent with the model assumptions, ensuring the reliability of the structure and increasing the safety of the structure. The present invention also provides a rigid connection node construction method, which is beneficial to the processing operation by changing the setting method of the stiffening plate and adjusting the rod processing procedure, while facilitating the integrated transportation of the overall I-beam and the node, reducing the dead weight of a single component, and facilitating on-site hoisting construction.

Description

Technical Field

[0001] The invention relates to the technical field of building structure and construction, and in particular to a rigid connection node and a construction method thereof. Background Art

[0002] The composition of the lattice shell structure is flexible and diverse, but also highly regular. The processing and manufacturing is highly mechanized and has been fully factory-based. At the same time, it has the advantages of good stress performance, light weight, high rigidity, good seismic performance, and less steel consumption. It can meet the needs of various architectural shapes and is widely used in many medium and large span space structure roofs such as gymnasiums, exhibition halls, waiting halls, botanical gardens, etc. Among them, the single-layer lattice shell structure system, the rods generally use round tubes, rectangular tubes, etc., and the connection nodes can be welded hollow balls, hub nodes, intersecting nodes and other rigid node forms according to the "Technical Code for Spatial Grid Structures" JGJ7 and "Steel Structure Design Standard" GB50017.

[0003] The single-layer lattice shell adopts the above-mentioned node method, and ensures the rigid connection of circular tubes or rectangular tubes through calculation and construction. When the structure is restricted by conditions and the single-layer lattice shell adopts I-beams and rectangular steel tubes, its node connection cannot apply the node form of the current specification. Reasonable construction and strengthening measures are required to ensure the rigid connection of the node, which is consistent with the assumptions of the calculation model.

[0004] According to the traditional method of setting stiffening plates in the full height of I-beam, Figure 1a As shown in the figure, when no stiffening plate is added to the lower side of the rectangular steel tube, the connection between the rectangular steel tube and the I-beam cannot effectively transmit the internal force of the rod, and the rigid node requirements cannot be met. When a stiffening plate is added to the lower side of the rectangular steel tube as shown in the figure, when the cross-section of the I-beam is wider and the cross-section of the rectangular steel tube is smaller, the added stiffening plate is difficult to weld and process, and the effective force transmission of the node cannot be guaranteed.

[0005] According to the traditional semi-rigid connection method between I-beam and rectangular steel tube, such as Figure 1b As shown in the figure, the connection between the rectangular steel tube and the I-beam cannot effectively transfer the bending moment of the member. The flanges and webs of the I-beam also have stress concentration and amplification problems, which have a great impact on the main structural members and are not conducive to safety. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the defect of the prior art that the internal force of the rod cannot be effectively transmitted and the problem of processing difficulty in the prior art, thereby providing a rigid connection node and a construction method thereof.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a rigid connection node, comprising:

[0008] I-beam, including flange plates and web plates;

[0009] A rectangular steel pipe is arranged on the side of the I-beam and is provided with a yielding portion adapted to the flange plate;

[0010] The stiffening rib is arranged between the I-shaped beam and the rectangular steel pipe, and is connected to the I-shaped beam and the rectangular steel pipe.

[0011] As a preferred solution of the rigid connection node of the present invention, the giving way portion is in contact with and connected to the inner side of the flange plate.

[0012] As a preferred solution of the rigid connection node described in the present invention, the concession portion is a cutout formed by cutting out the wall panel from the end of the rectangular steel tube, and the length of the cutout is less than or equal to the protruding length of the flange plate.

[0013] As a preferred solution of the rigid connection node of the present invention, the yielding portion is spliced ​​with the upper wing plate of the I-beam, and the stiffening rib is arranged between the rectangular steel tube and the lower wing plate of the I-beam.

[0014] As a preferred solution of the rigid connection node of the present invention, the stiffening ribs are arranged perpendicular to the web and are respectively connected to the wall plates of the rectangular steel tube and the lower wing plates and web plates of the I-beam.

[0015] As a preferred solution of the rigid connection node of the present invention, two parallel stiffening ribs are provided between each of the rectangular steel tubes and the lower wing plate, and the stiffening ribs are flush with the outer side wall plates of the rectangular steel tubes.

[0016] As a preferred solution of the rigid connection node described in the present invention, the give way portion and the flange plate are connected by welding, and the stiffening rib and the rectangular steel pipe and the I-beam are connected by welding.

[0017] As a preferred solution of the rigid connection node described in the present invention, a reinforcing stiffening plate is provided on the inner side of the giving way portion, and the reinforcing stiffening plate is welded to the inner wall of the rectangular steel tube and aligned with the edge of the flange plate.

[0018] The present invention also provides a construction method for a rigid connection node, comprising:

[0019] According to the size of the flange plate, a clearance portion is cut out at the end of the rectangular steel tube;

[0020] A reinforcing stiffening plate is arranged inside the rectangular steel tube;

[0021] The rectangular steel tube and the flange plate are spliced ​​and connected through the concession portion;

[0022] The stiffening rib is connected between the rectangular steel tube and the flange plate.

[0023] As a preferred construction scheme of the rigid connection node described in the present invention, wherein: a circle of welding is performed around the connection between the reinforcing stiffening plate and the rectangular steel pipe and the flange plate;

[0024] Weld the connection between the steel pipe and the I-beam around the circle;

[0025] Weld the stiffening ribs around the connection with the rectangular steel pipe and I-beam.

[0026] The technical solution of the present invention has the following advantages:

[0027] 1. The rigid connection node provided by the present invention changes the traditional node connection method by arranging a yield portion on the rectangular steel tube and arranging a stiffening rib between the rectangular steel tube and the I-beam, so that the internal force of the node out of the rod can be effectively transmitted, thereby achieving the purpose of the rigid area. At the same time, it is also consistent with the model assumptions, ensuring structural reliability and increasing structural safety.

[0028] 2. The rigid connection node provided by the present invention strengthens the local force of the I-beam by setting stiffening ribs on the I-beam. The original I-beam full-height stiffening plate is changed to be set along the position of the rectangular steel pipe wall plate, and the node processing and welding sequence is adjusted, which is more conducive to operation, processing and ensuring welding quality.

[0029] 3. The rigid connection node provided by the present invention adds a reinforcing stiffening plate inside the rectangular steel pipe to weaken the stress concentration that may be caused by the contact between the rectangular steel pipe and the stiffening rib, and is also a strengthening measure for the local stress of the rectangular steel pipe.

[0030] 4. The construction method of the rigid connection node provided by the present invention is based on the traditional I-beam node. By changing the setting method of the stiffening plate and adjusting the rod processing procedure, it is adapted to the connection between the I-beam and the rectangular steel pipe. The rectangular steel pipe is divided into sections, and the stiffening plate inside the rectangular steel pipe is located at the end of the section pipe mouth, which is conducive to the welding operation of the stiffening plate and the rectangular steel pipe, and at the same time facilitates the integrated transportation of the overall I-beam and the node, reduces the dead weight of a single component, and is convenient for on-site lifting construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1a Schematic diagram of the setting method of the stiffening plate of the traditional I-beam and rectangular steel tube;

[0033] Figure 1bSchematic diagram of the semi-rigid connection between traditional I-beam and rectangular steel tube.

[0034] Figure 2 It is the overall schematic diagram of the rigid connection node;

[0035] Figure 3 It is a decomposition diagram of the rigid connection node;

[0036] Figure 4 This is a schematic diagram of the arrangement of the reinforcing stiffening plate in the rectangular steel tube;

[0037] Figure 5a The node stress distribution diagram of the traditional I-beam and the rectangular steel tube stiffener setting method;

[0038] Figure 5b The node stress distribution diagram of the semi-rigid connection between the traditional I-beam and the rectangular steel tube;

[0039] Figure 5c It is a node stress distribution diagram of the rigid connection node of the present invention;

[0040] Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 Schematic diagram of the process of rigid connection node construction method.

[0041] Description of reference numerals:

[0042] 100, I-beam; 200, rectangular steel tube; 300, stiffening rib;

[0043] 101, flange plate; 102, web plate; 101a, upper wing plate; 101b, lower wing plate;

[0044] 201, the clearance portion; 201a, the cutout; 202, the reinforcing stiffening plate; 203, the wall panel. DETAILED DESCRIPTION

[0045] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0047] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0049] Example 1

[0050] This embodiment provides a rigid connection node, whose structure is as follows Figure 2 and Figure 3 As shown, it includes an I-beam 100 , a rectangular steel pipe 200 and a stiffening rib 300 .

[0051] The I-beam 100 includes a flange plate 101 and a web plate 102. The rectangular steel tube 200 is arranged on the side of the I-beam 100, and is provided with a ditching portion 201 adapted to the flange plate 101. The stiffening rib 300 is arranged between the I-beam 100 and the rectangular steel tube 200, and is connected to the I-beam 100 and the rectangular steel tube 200.

[0052] like Figure 2 and Figure 3 As shown, a retracting portion 201 matching the shape of the flange plate 101 is cut out from the rectangular steel tube 200 in this embodiment, so that the local I-beam 100 fits the surface of the rectangular steel tube 200, and the size is suitable, which is easy to process and weld. At the same time, two stiffening ribs 300 are set and welded at the corresponding positions of the rectangular steel tube 200, so that the structure of the node can effectively, safely and reliably transmit the internal force of the rectangular steel tube 200, eliminate the local stress concentration of the node steel tube, and meet the rigid node requirements. The problem of rigid connection between the I-beam 100 and the rectangular steel tube 200, without a standard basis, difficult construction, and ineffective force transmission in the ordinary stiffening plate setting method is solved.

[0053] The rigid connection node provided in this embodiment changes the traditional node connection method by setting a yield portion 201 on the rectangular steel tube 200 and setting a stiffening rib 300 between the rectangular steel tube 200 and the I-beam 100, so as to effectively transmit the internal force of the node out of the rod and achieve the purpose of the rigid area. At the same time, it is also consistent with the model assumptions, ensuring structural reliability and increasing structural safety.

[0054] Example 2

[0055] This embodiment provides a rigid connection node, including an I-beam 100, a rectangular steel tube 200 and a stiffening rib 300. The I-beam 100 includes a flange plate 101 and a web plate 102. The rectangular steel tube 200 is arranged on the side of the I-beam 100, and is provided with a yielding portion 201 adapted to the flange plate 101. The stiffening rib 300 is arranged between the I-beam 100 and the rectangular steel tube 200, and is connected to the I-beam 100 and the rectangular steel tube 200.

[0056] like Figure 2 and Figure 3 As shown, the clearance portion 201 contacts and connects with the inner side of the flange plate 101. Specifically, the clearance portion 201 in this embodiment is a cutout 201a formed by cutting out the wall plate 203 from the end of the rectangular steel tube 200, and the length of the cutout 201a is equal to the protruding length of the flange plate 101, and the depth of the cutout 201a is the same as the thickness of the flange plate 101, so that the local I-beam 100 fits the surface of the rectangular steel tube 200, and the size is appropriate, which is easy to process and weld.

[0057] like Figure 2 As shown, the stiffening ribs 300 in this embodiment are arranged perpendicular to the web 102, and the two ends are respectively connected to the wall plate 203 of the rectangular steel tube 200 and the lower wing plate 101b of the I-beam 100. Two parallel stiffening ribs 300 are arranged between each rectangular steel tube 200 and the lower wing plate 101b, and the stiffening ribs 300 are flush with the outer side of the side wall plate 203 of the rectangular steel tube 200.

[0058] In order to ensure the stability of the connection, the clearance portion 201 is welded to the flange plate 101, and the stiffening rib 300 is welded to the rectangular steel pipe 200 and the I-beam 100. Figure 2 and Figure 3 As shown, the contact position between the yielding portion 201 of the rectangular steel tube 200 and the flange plate 101, and the circle formed by the end of the rectangular steel tube 200 and the web 102 are all welded. The two ends of the stiffening rib 300 and one side in contact with the web 102, forming a three-side contact position, are also welded.

[0059] The clearance portion 201 provided on the rectangular steel tube 200 also facilitates the position determination between the rectangular steel tube 200 and the I-beam 100, and facilitates welding construction. Two welded stiffening ribs 300 are provided at corresponding positions of the rectangular steel tube 200, so that the structure of the node can effectively, safely and reliably transmit the internal force of the rectangular steel tube 200, eliminate the local stress concentration of the node steel tube, and meet the rigid node requirements.

[0060] In order to further strengthen the local stress of the rectangular steel tube 200, such as Figure 3 and Figure 4 As shown, a reinforcing stiffening plate 202 is provided inside the yielding portion 201 in this embodiment. The reinforcing stiffening plate 202 is welded to the inner wall of the rectangular steel tube 200 and is aligned with the edge of the flange plate 101 .

[0061] By adding the reinforcing stiffening plate 202 inside the rectangular steel tube 200, the stress concentration that may be caused by the contact between the rectangular steel tube 200 and the stiffening rib 300 is weakened, and it is also a measure to strengthen the local stress of the rectangular steel tube 200. Figure 5a , Figure 5b , Figure 5c As shown, the three figures correspond to Figure 1a Stress cloud diagram under the setting mode of traditional I-beam and rectangular steel tube stiffener plate, Figure 1b Stress cloud diagram of the semi-rigid connection between traditional I-beam and rectangular steel tube, Figure 2 Stress cloud diagram of the rigid connection node of the connection method of this embodiment. Figure 5a It can be seen from the stress cloud diagram that Figure 1a Connection mode: the flange plate 101 of the main structural member of the I-beam is greatly affected by the connection of the rectangular steel pipe, and there are stress superposition, concentration and amplification phenomena. Since the stiffening plate 202 is not set and the stiffening plate 300 is not easy to construct inside, the stiffening plate 300 in the rectangular steel pipe node area and the related range is subjected to greater force, and the stress concentration range is larger; Figure 5b It can be seen that in Figure 1b Under the connection mode, the flange plate 101 of the main structural member of the I-beam is most affected by the rectangular steel pipe connection, and the stress superposition, concentration and increase phenomenon are also the most obvious. Although it is a semi-rigid connection node, it still needs to transmit the corresponding internal forces such as bending moment, shear force, axial force, etc. At the same time, since no stiffening plate 300 is set, the web plate 102 of the main structural member of the I-beam has stress concentration and increase phenomenon in the rectangular steel pipe node area and related range; Figure 2The connection method of the present invention, due to the provision of stiffening plates 300 and 202, and by changing the construction operation method, the lower flange 203 of the rectangular steel pipe can be more conveniently extended to the web 102 of the I-beam, and finally the influence of the flange plate 101 of the I-beam at the node is reduced to the minimum, the web 102 of the I-beam is basically not affected by the connection node, and the overall stress level of the stiffening plate 300 and the related range of the connection node area is also the lowest. Therefore, this connection method is the safest, most reliable, and conducive to construction.

[0062] Example 3

[0063] The present invention provides a construction method for a rigid connection node, the process of which is as follows: Figures 6 to 10 As shown, the following steps are included:

[0064] According to the size of the flange plate 101, a clearance portion 201 is cut out at the end of the rectangular steel tube 200;

[0065] A reinforcing stiffening plate 202 is provided inside the rectangular steel tube 200;

[0066] The rectangular steel pipe 200 and the flange plate 101 are spliced ​​and connected through the clearance portion 201;

[0067] The stiffening rib 300 is connected between the rectangular steel pipe 200 and the flange plate 101 .

[0068] Weld the reinforcing plate 202, the rectangular steel pipe 200 and the flange plate 101 around the connection;

[0069] Weld the rectangular steel pipe 200 and the I-beam 100 around the connection;

[0070] The stiffening rib 300 is welded around the connection between the rectangular steel pipe 200 and the I-beam.

[0071] Specifically, it is divided into the following four steps:

[0072] 1. Processing of rectangular steel pipe 200: Figure 6 As shown, a steel pipe for the node area is cut out from a long rectangular steel pipe 200, and then a wall plate 203 close to the flange of the I-beam 100 is cut off according to the size of the flange plate 101, so as to form a Figure 7 The yielding portion 201 shown;

[0073] 2. Install the reinforcement plate 202: Figure 8 As shown, a reinforcing stiffening plate 202 is welded inside the cut steel pipe, and a circle of welding is performed around the connection between the reinforcing stiffening plate 202 and the rectangular steel pipe 200;

[0074] 3. Connection between rectangular steel tube 200 and I-beam 100: Fig. 9As shown, the clearance portion 201 is aligned with the flange plate 101, and the rectangular steel pipe 200 together with the added reinforcing stiffening plate 202 are welded to the flange plate 101;

[0075] 4. Install two stiffening ribs 300, such as Fig.10 As shown, two stiffening plates are placed in the area between the rectangular steel tube 200 and the I-beam 100, and the stiffening rib 300 is welded around the connection between the rectangular steel tube 200 and the I-beam.

[0076] The construction method of the rigid connection node provided in the present embodiment is based on the traditional I-beam 100 node. By changing the setting mode of the stiffening plate and adjusting the rod processing procedure, it is adapted to the connection between the I-beam 100 and the rectangular steel pipe 200. The rectangular steel pipe 200 is segmented and the stiffening plate inside the rectangular steel pipe 200 is located at the end of the segmented pipe mouth, which is beneficial to the welding operation of the stiffening plate and the rectangular steel pipe 200. At the same time, it is convenient for the integrated transportation of the overall I-beam 100 and the node, reduces the dead weight of a single component, and is convenient for on-site lifting construction.

[0077] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0078] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0079] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0080] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A rigid connection node, characterized in that: include: An I-beam (100) comprises a flange plate (101) and a web plate (102); A rectangular steel pipe (200) is arranged on the side of the I-beam (100) and is provided with a relief portion (201) adapted to the flange plate (101); A stiffening rib (300) is disposed between the I-beam (100) and the rectangular steel tube (200), and is connected to the I-beam (100) and the rectangular steel tube (200); the stiffening rib (300) is disposed perpendicular to the web (102), and is respectively connected to the wall plate (203) of the rectangular steel tube (200) and the lower wing plate (101b) and the web (102) of the I-beam (100); The yielding portion (201) is spliced ​​with the upper wing plate (101a) of the I-beam (100), and the stiffening rib (300) is provided between the rectangular steel tube (200) and the lower wing plate (101b) of the I-beam (100).

2. The rigid connection node according to claim 1, characterized in that: The clearance portion (201) contacts and is connected to the inner side of the flange plate (101) and the web plate (102).

3. The rigid connection node according to claim 2, characterized in that: The clearance portion (201) is a cutout (201a) formed by cutting out the wall plate (203) from the end of the rectangular steel tube (200), and the length of the cutout (201a) is less than or equal to the protruding length of the flange plate (101).

4. The rigid connection node according to claim 1, characterized in that: Two parallel stiffening ribs (300) are provided between each rectangular steel tube (200) and the lower wing plate (101b), and the stiffening ribs (300) are flush with the outer side of the side wall plate (203) of the rectangular steel tube (200).

5. The rigid connection node according to any one of claims 1 to 4, characterized in that: The clearance portion (201) and the flange plate (101) are connected by welding, and the stiffening rib (300) and the rectangular steel pipe (200) and the I-beam (100) are connected by welding.

6. The rigid connection node according to claim 5, characterized in that: A reinforcing stiffening plate (202) is provided on the inner side of the yielding portion (201); the reinforcing stiffening plate (202) is welded to the inner wall of the rectangular steel pipe (200) and is aligned with the edge of the flange plate (101).

7. A construction method for a rigid connection node according to any one of claims 1 to 6, characterized in that: include According to the size of the flange plate (101), a clearance portion (201) is cut out at the end of the rectangular steel tube (200); A reinforcing stiffening plate (202) is arranged inside the rectangular steel tube (200); Splicing and connecting the rectangular steel pipe (200) and the flange plate (101) through the clearance portion (201); A stiffening rib (300) is connected between the rectangular steel pipe (200) and the flange plate (101).

8. The construction method of the rigid connection node according to claim 7, characterized in that: Welding the reinforcing plate (202) around the connection between the rectangular steel pipe (200) and the flange plate (101); Welding the rectangular steel pipe (200) and the I-beam (100) around the connection; The stiffening rib (300) is welded around the connection between the rectangular steel pipe (200) and the I-beam (100).

Images