Node connection structure of closed concrete-filled steel tube

Abstract

The present invention relates to the technical field of structural engineering, and provides a closed steel tube concrete node connection structure, comprising: a first tube body, a second tube body, a first flange, a second flange and concrete; the first tube body is connected to the first flange; the second tube body is connected to the second flange; the first flange and the second flange are butted; wherein at least the first tube body and the second tube body form a chamber for accommodating the concrete. The closed steel tube concrete node connection structure provided by the present invention, by arranging a flange at the connection of the steel tube, can achieve the effects of reliable connection and good sealing performance when two sections of steel tubes are connected, and can be suitable for the application of steel tube concrete structures and their hybrid structures in large-scale structural engineering.

Description

Technical Field

[0001] The invention relates to the technical field of structural engineering, and in particular to a closed steel tube concrete node connection structure. Background Art

[0002] Steel tube concrete structures and their steel tube concrete hybrid structures have been widely used in industrial and civil buildings, structures and bridge projects. Due to the limitations of construction sites and transportation conditions, full-length steel pipes cannot be used directly in actual projects. It is necessary to splice steel pipe segments one by one at the construction site to form an overall structure. Therefore, it is inevitable to provide reliable connection devices between steel pipes and their construction methods in actual projects. The connection devices between steel pipes and their construction methods need to meet at least the following two requirements: on the one hand, the connection devices between steel pipes need to ensure that the steel pipes between different segments work together and deform in coordination; on the other hand, the connection devices between steel pipes also need to ensure that the steel pipe connection positions are well sealed to achieve the pouring of core concrete in the steel pipe under vacuum. Summary of the invention

[0003] The present invention proposes a closed steel tube concrete node connection structure to solve the defects in the prior art that the steel tubes between different sections cannot simultaneously meet the requirements of working together and deformation coordination, and the connection device between the steel tubes also needs to ensure that the steel tube connection position is well sealed to achieve the core concrete pouring in the steel tube under a vacuum state. By arranging a flange at the connection of the steel tube, when two sections of steel tubes are connected, the connection is reliable and the sealing performance is good. The structure can be suitable for the application of steel tube concrete structures and their hybrid structures in large-scale structural engineering.

[0004] A closed steel tube concrete node connection structure provided by the present invention comprises: a first tube body, a second tube body, a first flange, a second flange and concrete;

[0005] The first pipe body is connected to the first flange;

[0006] The second pipe body is connected to the second flange;

[0007] The first flange and the second flange are butted against each other;

[0008] Wherein, at least the first tube body and the second tube body form a chamber for accommodating the concrete.

[0009] According to one embodiment of the present invention, it further includes: connecting bolts, a plurality of the connecting bolts pass through the connecting surfaces of the first flange and the second flange to achieve the connection between the first flange and the second flange.

[0010] Specifically, this embodiment provides an implementation method of the connection relationship between a first flange and a second flange, and the connection between the first flange and the second flange is achieved by connecting bolts.

[0011] It should be noted that a plurality of corresponding holes are evenly arranged on the mating surfaces of the first flange and the second flange to facilitate the passage of connecting bolts. Through the tightening action of the connecting bolts, the first flange and the second flange can be tightly matched, the preload force can be strengthened, and the sealing of the first flange and the second flange after connection can be ensured.

[0012] In an application scenario, ordinary bolts are used as connecting bolts.

[0013] In one application scenario, high-strength bolts are used as connecting bolts.

[0014] According to one embodiment of the present invention, it further includes: a sealing weld, which is evenly arranged on the outer surface of the connection between the first flange and the second flange along the circumferential direction, for achieving sealing of the first flange and the second flange.

[0015] Specifically, this embodiment provides another implementation method of the connection relationship between the first flange and the second flange. By welding the outer surfaces of the connection between the first flange and the second flange, the sealing of the connection between the first flange and the second flange is achieved, ensuring that the internal concrete is not disturbed by the external environment, thereby improving the stability of the node connection structure of the closed steel tube concrete.

[0016] According to an embodiment of the present invention, a first groove is provided on a surface of the first flange facing the second flange, and the first groove at least accommodates a portion of the second flange.

[0017] Specifically, this embodiment provides another implementation method of the connection relationship between the first flange and the second flange. By setting the first groove, the first flange can accommodate the second flange part, so that the fitting surface of the first flange and the second flange forms at least one step-like structure, which provides a guarantee for sealing.

[0018] According to an embodiment of the present invention, it further comprises: a sealing medium, wherein the sealing medium is poured into the first groove to achieve sealing between the first flange and the second flange.

[0019] Specifically, this embodiment provides an implementation method of pouring a sealing medium into the first groove. By pouring the sealing medium into the first groove, the sealing performance when the first flange and the second flange are connected is further enhanced.

[0020] According to an embodiment of the present invention, the sealing medium is a medium composed of any one or several components of resin type, rubber type, oil-modified type and natural polymer type.

[0021] Specifically, this embodiment provides an implementation method of a specific material used for a sealing medium.

[0022] According to one embodiment of the present invention, the first flange is provided with a first through hole for the first tube to pass through;

[0023] The second flange is provided with a second through hole for the second tube body to pass through;

[0024] The first tube body and the second tube body abut against each other.

[0025] Specifically, this embodiment provides an implementation method for connecting a steel pipe with a flange. By setting a first through hole and a second through hole, the first tube body and the second tube body can be abutted, that is, the first flange and the second flange connection are butted by the butt joint of the first tube body and the second tube body, so as to realize subsequent concrete filling.

[0026] According to an embodiment of the present invention, a second groove matching the shape of the first tube body is provided on the opposite surface of the first flange and the second flange connection surface, and the first tube body abuts against the first flange in the second groove.

[0027] Specifically, this embodiment provides an implementation method of a first flange, in which a second groove for accommodating a first tube body is provided on the first flange, so that the mating surface of the first flange and the second flange can be finely processed, thereby improving the sealing effect and avoiding the risk of poor sealing due to the cutting of the steel pipe itself or concrete extrusion due to gaps in the joint.

[0028] According to an embodiment of the present invention, a third groove matching the shape of the second tube body is provided on the surface opposite to the connecting surface of the second flange and the first flange, and the second tube body abuts against the second flange in the third groove.

[0029] Specifically, this embodiment provides an implementation method of a second flange, in which a third groove for accommodating a second tube body is provided on the second flange, so that the mating surface of the second flange and the first flange can be finely processed, thereby improving the sealing effect and avoiding the risk of poor sealing due to the cutting of the steel pipe itself or concrete extrusion due to gaps in the joint.

[0030] It should be noted that the second groove provided on the first flange and the third groove provided on the second flange may be provided at the same time or may be provided selectively, depending on the actual situation and requirements.

[0031] According to an embodiment of the present invention, the cross-sections of the first tube body and the second tube body along the radial direction are circular or rectangular.

[0032] Specifically, this embodiment provides an implementation method for setting the shapes of the first tube body and the second tube body to meet more demand scenarios.

[0033] The above one or more technical solutions in the present invention have at least one of the following technical effects: a closed steel tube concrete node connection structure provided by the present invention, by arranging a flange at the connection of the steel tube, can achieve the effects of reliable connection and good sealing performance when two sections of steel tube are connected, and can be suitable for the application of steel tube concrete structures and their hybrid structures in large-scale structural engineering.

[0034] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 It is one of the schematic diagrams of the arrangement relationship of the node connection structure of the closed steel tube concrete provided by the present invention;

[0037] Figure 2 This is a second schematic diagram of the arrangement relationship of the node connection structure of the closed steel tube concrete provided by the present invention;

[0038] Figure 3 This is a third schematic diagram of the arrangement relationship of the node connection structure of the closed steel tube concrete provided by the present invention;

[0039] Figure 4 This is a fourth schematic diagram of the arrangement relationship of the node connection structure of the closed steel tube concrete provided by the present invention;

[0040] Figure 5 This is a fifth schematic diagram of the arrangement relationship of the node connection structure of the closed steel tube concrete provided by the present invention;

[0041] Figure 6 This is the sixth schematic diagram of the arrangement relationship of the node connection structure of the closed steel tube concrete provided by the present invention.

[0042] Reference numerals:

[0043] 10. The first pipe body; 20. The second pipe body; 30. The first flange;

[0044] 31. first groove; 32. first through hole; 33. second groove;

[0045] 40. second flange; 41. second through hole; 42. third groove;

[0046] 50. Concrete; 60. Connecting bolts; 70. Sealing weld;

[0047] 80. Sealing medium. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0049] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of 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.

[0050] In some specific embodiments of the present invention, Figures 1 to 6 As shown, the present solution provides a node connection structure of a closed steel tube concrete, comprising: a first tube body 10, a second tube body 20, a first flange 30, a second flange 40 and concrete 50; the first tube body 10 is connected to the first flange 30; the second tube body 20 is connected to the second flange 40; the first flange 30 and the second flange 40 are butt-jointed; wherein, at least the first tube body 10 and the second tube body 20 form a chamber for accommodating the concrete 50.

[0051] In detail, the present invention proposes a node connection structure of a closed steel tube concrete, which is used to solve the defects in the prior art that the connection device between steel tubes needs to ensure that the steel tubes between different sections work together and deform in coordination, and the connection device between steel tubes also needs to ensure that the connection position of the steel tube is well sealed to achieve the pouring of concrete 50 in the steel tube under a vacuum state. By arranging a flange at the connection of the steel tube, when two sections of steel tubes are connected, the connection is reliable and the sealing performance is good. The node connection structure of the closed steel tube concrete and its hybrid structure can be applied in large-scale structural engineering.

[0052] In some possible embodiments of the present invention, the invention further includes: connecting bolts 60 , wherein a plurality of connecting bolts 60 pass through the connecting surfaces of the first flange 30 and the second flange 40 to achieve connection between the first flange 30 and the second flange 40 .

[0053] Specifically, this embodiment provides an implementation of the connection relationship between the first flange 30 and the second flange 40 , and the connection between the first flange 30 and the second flange 40 is achieved by connecting bolts 60 .

[0054] It should be noted that a plurality of corresponding holes are evenly arranged on the fitting surfaces of the first flange 30 and the second flange 40 to facilitate the passage of the connecting bolts 60. Through the tightening action of the connecting bolts 60, the first flange 30 and the second flange 40 can be tightly fitted, the preload force can be strengthened, and the sealing of the first flange 30 and the second flange 40 after being connected can be ensured.

[0055] In an application scenario, the connecting bolts 60 are ordinary bolts.

[0056] In one application scenario, the connecting bolts 60 are high-strength bolts.

[0057] In some possible embodiments of the present invention, the invention further includes: a sealing weld 70 , which is evenly arranged along the circumferential direction on the outer surface of the connection between the first flange 30 and the second flange 40 to achieve sealing of the first flange 30 and the second flange 40 .

[0058] Specifically, this embodiment provides another implementation method of the connection relationship between the first flange 30 and the second flange 40. By welding the outer surfaces of the connection between the first flange 30 and the second flange 40, the connection between the first flange 30 and the second flange 40 is sealed, ensuring that the internal concrete 50 is not disturbed by the external environment, thereby improving the stability of the closed steel tube concrete structure.

[0059] In some possible embodiments of the present invention, a first groove 31 is provided on a side of the first flange 30 facing the second flange 40 , and the first groove 31 at least accommodates a portion of the second flange 40 .

[0060] Specifically, this embodiment provides another implementation of the connection relationship between the first flange 30 and the second flange 40. By setting the first groove 31, the first flange 30 can partially accommodate the second flange 40, so that the fitting surfaces of the first flange 30 and the second flange 40 form at least one step-like structure, which provides a guarantee for sealing.

[0061] In some possible embodiments of the present invention, the sealing medium 80 is further included. The sealing medium 80 is poured into the first groove 31 to achieve sealing between the first flange 30 and the second flange 40 .

[0062] Specifically, this embodiment provides an implementation method of pouring the sealing medium 80 into the first groove 31 . By pouring the sealing medium 80 into the first groove 31 , the sealing performance when the first flange 30 and the second flange 40 are connected is further enhanced.

[0063] In some possible embodiments of the present invention, the sealing medium 80 is a medium composed of any one or several components of a resin type, a rubber type, an oil-modified type, and a natural polymer type.

[0064] Specifically, this embodiment provides an implementation method of a specific material used for the sealing medium 80 .

[0065] In some possible embodiments of the present invention, the first flange 30 is provided with a first through hole 32 for the first tube 10 to pass through; the second flange 40 is provided with a second through hole 41 for the second tube 20 to pass through; the first tube 10 and the second tube 20 abut against each other.

[0066] Specifically, this embodiment provides an implementation method for connecting a steel pipe to a flange. By setting a first through hole 32 and a second through hole 41, the first tube body 10 and the second tube body 20 can be abutted, that is, by docking the first tube body 10 and the second tube body 20, the docking at the connection between the first flange 30 and the second flange 40 is achieved, and subsequent filling of concrete 50 is achieved.

[0067] In some possible embodiments of the present invention, a second groove 33 matching the shape of the first tube body 10 is provided on the surface opposite to the connecting surface of the first flange 30 and the second flange 40 , and the first tube body 10 abuts against the first flange 30 in the second groove 33 .

[0068] Specifically, this embodiment provides an implementation method of a first flange 30, by setting a second groove 33 for accommodating the first tube body 10 on the first flange 30, so that the mating surface of the first flange 30 and the second flange 40 can be finely processed, thereby improving the sealing effect and avoiding the risk of poor sealing due to the cutting of the steel pipe itself or the extrusion of concrete 50 due to the gap in the joint.

[0069] In some possible embodiments of the present invention, a third groove 42 matching the shape of the second tube body 20 is provided on the surface opposite to the connecting surface of the second flange 40 and the first flange 30 , and the second tube body 20 abuts against the second flange 40 in the third groove 42 .

[0070] Specifically, this embodiment provides an implementation method of a second flange 40, by setting a third groove 42 for accommodating the second tube body 20 on the second flange 40, so that the mating surface of the second flange 40 and the first flange 30 can be fine-machined, thereby improving the sealing effect and avoiding the risk of poor sealing due to the cutting of the steel pipe itself or the extrusion of concrete 50 due to gaps in the joint.

[0071] It should be noted that the second groove 33 provided on the first flange 30 and the third groove 42 provided on the second flange 40 may be provided at the same time or one of them may be provided selectively, depending on the actual situation and requirements.

[0072] In some possible embodiments of the present invention, the cross-sections of the first tube body 10 and the second tube body 20 along the radial direction are circular or rectangular.

[0073] Specifically, this embodiment provides an implementation method for setting the shapes of the first tube body 10 and the second tube body 20 to meet more demand scenarios.

[0074] In some specific embodiments of the present invention, the present solution provides a construction process for a closed steel tube concrete 50 structure, comprising:

[0075] Delivering the first pipe body 10, the second pipe body 20, the first flange 30, and the second flange 40 and other bulk components to the construction site;

[0076] The first pipe body 10 and the first flange 30, and the second pipe body 20 and the second flange 40 are respectively connected;

[0077] Then, the first flange 30 and the second flange 40 are butt-jointed;

[0078] Concrete 50 is poured into the first tube body 10 and the second tube body 20 by vacuum infusion.

[0079] In some possible embodiments of the present invention, when the connecting bolts 60 are used for sealing, the first flange 30 and the second flange 40 are fastened and connected by the connecting bolts 60 , thereby forming a seal for the first flange 30 and the second flange 40 .

[0080] In some possible embodiments of the present invention, when the sealing weld 70 is used for sealing, the outer surface of the connection between the first flange 30 and the second flange 40 is welded to form a seal between the first flange 30 and the second flange 40 .

[0081] In some possible embodiments of the present invention, when the sealing medium 80 is used for sealing, the sealing medium 80 is poured into the first groove 31 before the first flange 30 and the second flange 40 are connected, thereby forming a seal for the first flange 30 and the second flange 40 .

[0082] In some possible embodiments of the present invention, when connecting bolts 60, sealing welds 70 and sealing media 80 are used for sealing, the corresponding construction is carried out according to the above-mentioned construction steps, and the operations are performed according to the roles played by the connecting bolts 60, sealing welds 70 and sealing media 80 in the closed steel tube concrete structure 50 and the corresponding construction steps.

[0083] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0084] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the present invention, rather than to limit the present invention. Although the present invention is described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. A closed steel tube concrete node connection structure, characterized in that: include: A first pipe body, a second pipe body, a first flange, a second flange, concrete, a sealing weld and a sealing medium; The first pipe body is connected to the first flange; The second pipe body is connected to the second flange; The first flange and the second flange are butted against each other; The sealing weld is evenly arranged on the outer surface of the connection between the first flange and the second flange along the circumferential direction, so as to achieve sealing between the first flange and the second flange; A first groove is provided on a side of the first flange facing the second flange, and the first groove at least accommodates a portion of the second flange; The sealing medium is poured into the first groove to achieve sealing between the first flange and the second flange; Wherein, at least the first tube body and the second tube body form a chamber for containing the concrete; A second groove matching the shape of the first tube body is provided on the opposite surface of the first flange and the connecting surface of the second flange, and the first tube body abuts against the first flange in the second groove; A third groove matching the shape of the second tube body is provided on the surface of the second flange opposite to the connecting surface of the first flange, and the second tube body abuts against the second flange in the third groove.

2. A closed steel tube concrete node connection structure according to claim 1, characterized in that: Also includes: Connecting bolts, a plurality of the connecting bolts pass through the connecting surfaces of the first flange and the second flange to achieve the connection between the first flange and the second flange.

3. A closed steel tube concrete node connection structure according to claim 1 or 2, characterized in that: The sealing medium is a medium composed of any one or several components of resin type, rubber type, oil modified type and natural polymer type.

4. A closed steel tube concrete node connection structure according to claim 1 or 2, characterized in that: The first flange is provided with a first through hole for the first tube to pass through; The second flange is provided with a second through hole for the second tube body to pass through; The first tube body and the second tube body abut against each other.

5. A closed steel tube concrete node connection structure according to claim 1 or 2, characterized in that: The cross-sections of the first tube body and the second tube body along the radial direction are circular or rectangular.

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