Anti-seismic connecting joint of steel structure

Abstract

The invention relates to the technical field of building steel structures, in particular to a steel structure anti-seismic connecting joint which comprises a connecting ring, a steel wire rope inhaul cable and at least three connecting pieces. The at least three connecting pieces are distributed in the circumferential direction of the connecting ring, each connecting piece comprises a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod of the same connecting piece are hinged through a first hinge shaft, and the first hinge shaft is connected with the steel wire rope inhaul cable; the first connecting rods and the second connecting rods of at least three connecting pieces are alternately distributed in the circumferential direction of the connecting ring, the first connecting rods are hinged to the second connecting rods of the adjacent connecting pieces through second hinge shafts, the first hinge shafts and the second hinge shafts extend in the axial direction of the connecting ring, and the second hinge shafts can rotate in the circumferential direction of the connecting ring. And the strength of the second hinge shaft is smaller than that of the first hinge shaft, so that the device can adapt to different numbers of steel wire rope inhaul cables, has certain universality and meanwhile has good anti-seismic performance.

Description

Technical Field

[0001] This invention relates to the field of building steel structure technology, and in particular to a seismic-resistant connection node for steel structures. Background Technology

[0002] Cables are commonly used in steel structure buildings. Cables can resist horizontal loads such as wind loads and seismic forces, thereby reducing the deformation of the steel structure and making the steel structure building more stable.

[0003] For example, patent document CN223074906U discloses a cable space crossing device, including a cable connector. Both ends of the cable connector are detachably connected to connecting parts for fixing to steel cables. A hollow elongated hole is opened in the middle of the cable connector, allowing another steel cable to pass through. However, this cable structure is not suitable for different numbers of steel wire ropes, resulting in poor versatility. Summary of the Invention

[0004] Therefore, it is necessary to provide a seismic-resistant connection node for steel structures to address the current technical problem of poor versatility of cable connectors.

[0005] The above objectives are achieved through the following technical solutions: A seismic-resistant connection node for a steel structure includes a connecting ring, a steel wire rope cable, and at least three connecting members. The at least three connecting members are distributed around the circumference of the connecting ring. Each connecting member includes a first connecting rod and a second connecting rod. The first connecting rod and the second connecting rod of the same connecting member are hinged together by a first hinge axis, which is connected to the steel wire rope cable. The first connecting rod and the second connecting rod of the at least three connecting members are alternately distributed around the circumference of the connecting ring. The first connecting rod is hinged to the second connecting rod of an adjacent connecting member by a second hinge axis. Both the first and second hinge axes extend axially along the connecting ring. The second hinge axis is rotatable around the circumference of the connecting ring, and the strength of the second hinge axis is less than the strength of the first hinge axis.

[0006] Furthermore, an elastic sheet is provided between two adjacent connectors. One end of the elastic sheet is connected to the first link of one of the connectors, and the other end of the elastic sheet is connected to the second link of the other connector. The elastic sheet can maintain a set angle between two adjacent connectors.

[0007] Furthermore, the connecting ring includes a first connecting ring and a second connecting ring that are coaxially and detachably connected; the first connecting ring and the second connecting ring have the same structure and are arranged sequentially along their axial direction, and a tapered annular groove is provided on the opposite end face of the first connecting ring and the second connecting ring. The tapered annular groove is coaxially arranged with the first connecting ring or the second connecting ring, and the two ends of the second hinge shaft along the length direction are respectively located in the tapered annular groove of the first connecting ring and the tapered annular groove of the second connecting ring. The tapered annular groove causes the two ends of the second hinge shaft along the length direction to bend away from the axis of the first connecting ring or the second connecting ring.

[0008] Furthermore, a flared structure is formed at the outer peripheral edge of the opposite end faces of the first connecting ring and the second connecting ring. When the second hinge shaft is subjected to a horizontal tension, the second hinge shaft squeezes the flared structure through the conical ring groove, causing the flared structure to shrink and thus clamp the first connecting rod and the second connecting rod.

[0009] Furthermore, both the first connecting ring and the second connecting ring are provided with a fixing plate in the middle. The two fixing plates are detachably fixed together by bolts. The fixing plate is located on the opposite side of the first connecting ring or the second connecting ring, and the fixing plate protrudes from the opposite end face of the first connecting ring or the second connecting ring.

[0010] Furthermore, the first link and the second link have the same structure. Both the first link and the second link include an integrally formed straight rod and a U-shaped link. The straight rod and the U-shaped link extend along the same straight line. The straight rod can be inserted into the U-shaped link of another first link or second link.

[0011] Furthermore, the straight rod is provided with a first hinge hole, and the U-shaped connecting rod is provided with two coaxial second hinge holes. The first hinge hole and the second hinge hole can correspond to each other, so as to allow the first hinge shaft or the second hinge shaft to be inserted. Two retaining rings are sleeved on the second hinge shaft, and the outer periphery of each second hinge hole is provided with a relief groove coaxially. The retaining ring and the relief groove correspond one-to-one, and the retaining ring and the relief groove are engaged in a stop fit in the axial direction of the second hinge hole.

[0012] Furthermore, both the first and second connecting rods have threaded holes at their midpoints, the axis of the threaded holes is perpendicular to the axis of the connecting ring, and a screw is threaded through the elastic plate, the screw being threaded into the threaded hole.

[0013] Furthermore, the wire rope cable is provided with a cable head, which is hinged to the first hinge shaft.

[0014] Furthermore, the number of connectors is four.

[0015] The beneficial effects of this invention are: The seismic connection node for steel structures provided by this invention has several advantages. First, the number of connecting parts on the connecting ring can be adjusted according to the number of wire rope cables, thus accommodating different numbers of wire rope cables and exhibiting a certain degree of versatility. Furthermore, when the seismic connection node encounters seismic loads, the second hinge shaft can rotate around the circumference of the connecting ring, or the second hinge shaft may break, thereby eliminating part of the seismic load and demonstrating good seismic performance.

[0016] Secondly, multiple elastic plates allow multiple connectors to be evenly distributed on the connecting ring, thereby ensuring a uniform distribution of the tension force exerted by each wire rope on the connecting ring and improving the stability of the seismic connection nodes of the steel structure.

[0017] Third, when a wire rope cable is subjected to a large tension, the second hinge shaft squeezes the flared structure through the conical ring groove, causing the flared structure to shrink and thus clamping the first connecting rod and the second connecting rod. This can enhance the stability of the wire rope cable and the connecting ring, and prevent the failure of the seismic connection node of the steel structure.

[0018] Fourth, when the second hinge shaft breaks, that is, when the seismic connection node of the steel structure encounters a large seismic load, the seismic connection node of the steel structure is in a failure state. At this time, the two ends of each second hinge shaft along the length direction are sheared with the conical annular groove, so that the two ends of the second hinge shaft along the length direction are cut off. However, the remaining part of the second hinge shaft can still connect the first connecting rod with the second connecting rod of the adjacent connecting member, so that multiple wire rope cables can still maintain the connection state and maintain the stability of the seismic connection node of the steel structure. Attached Figure Description

[0019] Figure 1 A three-dimensional structural schematic diagram of a seismic-resistant connection node of a steel structure provided in an embodiment of the present invention; Figure 2 This is a top view schematic diagram of a seismic connection node of a steel structure provided in an embodiment of the present invention; Figure 3 for Figure 2 Sectional view of AA; Figure 4 This is an exploded view of a seismic-resistant connection node of a steel structure provided in an embodiment of the present invention. Figure 5 This is a structural schematic diagram of a single connector in a seismic-resistant connection node of a steel structure provided in an embodiment of the present invention; Figure 6 for Figure 5 A top-down view; Figure 7 for Figure 6 BB section view; Figure 8 This is a schematic diagram of a seismic connection node of a steel structure in a failure state according to an embodiment of the present invention. Figure 9 A three-dimensional structural schematic diagram of a seismic connection node of a steel structure provided for another embodiment of the present invention.

[0020] in: 101. First connecting rod; 102. Second connecting rod; 103. Elastic plate; 104. First hinge shaft; 105. First connecting ring; 106. Second connecting ring; 107. Second hinge shaft; 108. Retaining ring; 109. Bolt; 110. Fixing plate; 111. Conical ring groove; 112. Clearance groove; 113. Flared structure; 200. Wire rope cable; 201. Cable head; 202. Nut. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0022] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0024] like Figures 1 to 9As shown, an embodiment of the present invention provides a seismic connection node for a steel structure, including a connecting ring, a steel wire rope cable 200, and at least three connecting members; the at least three connecting members are distributed around the circumference of the connecting ring, each connecting member including a first connecting rod 101 and a second connecting rod 102, the first connecting rod 101 and the second connecting rod 102 of the same connecting member are hinged by a first hinge shaft 104, the first hinge shaft 104 is connected to the steel wire rope cable 200; the first connecting rod 101 and the second connecting rod 102 of the at least three connecting members are alternately distributed around the circumference of the connecting ring, the first connecting rod 101 and the second connecting rod 102 of the adjacent connecting member are hinged by a second hinge shaft 107, the first hinge shaft 104 and the second hinge shaft 107 both extend along the axial direction of the connecting ring, the second hinge shaft 107 can rotate around the circumference of the connecting ring, and the strength of the second hinge shaft 107 is less than the strength of the first hinge shaft 104.

[0025] In this way, the number of connectors on the connecting ring can be adjusted according to the number of wire rope cables 200, thus accommodating different numbers of wire rope cables 200 and possessing a certain degree of versatility. When the seismic connection node of the steel structure encounters seismic load, the second hinge shaft 107 can rotate around the circumference of the connecting ring, or the second hinge shaft 107 may break, thereby eliminating part of the seismic load and exhibiting good seismic performance.

[0026] Furthermore, an elastic piece 103 is provided between two adjacent connectors. One end of the elastic piece 103 is connected to the first link 101 of one of the connectors, and the other end of the elastic piece 103 is connected to the second link 102 of the other connector. The elastic piece 103 can maintain a set included angle between two adjacent connectors.

[0027] In this way, multiple elastic plates 103 can make multiple connectors evenly distributed on the connecting ring, thereby making the tension of each wire rope cable 200 on the connecting ring evenly distributed, and improving the stability of the seismic connection node of the steel structure.

[0028] Furthermore, the connecting ring includes a first connecting ring 105 and a second connecting ring 106 that are coaxially and detachably connected. The first connecting ring 105 and the second connecting ring 106 have the same structure and are arranged sequentially along their axial direction. A tapered annular groove 111 is provided on the opposite end faces of the first connecting ring 105 and the second connecting ring 106. The tapered annular groove 111 is coaxially arranged with either the first connecting ring 105 or the second connecting ring 106. The two ends of the second hinge shaft 107 along its length direction are respectively located in the tapered annular groove 111 of the first connecting ring 105 and the tapered annular groove 111 of the second connecting ring 106. The tapered annular groove 111 causes the two ends of the second hinge shaft 107 along its length direction to bend away from the axis of the first connecting ring 105 or the second connecting ring 106. When the second hinge shaft 107 is not installed in the tapered annular groove 111, the second hinge shaft 107 is a straight rod. After being installed in the two tapered annular grooves 111, the ends of the second hinge shaft 107 bend. In this way, the second hinge shaft 107 will not rotate on its own axis, but can only rotate along the conical annular groove 111.

[0029] like Figure 3 As shown, a flared structure 113 is formed at the outer peripheral edge of the opposite end face of the first connecting ring 105 and the second connecting ring 106. When the second hinge shaft 107 is subjected to a horizontal tension, the second hinge shaft 107 squeezes the flared structure 113 through the conical ring groove 111, causing the flared structure 113 to shrink and thus clamp the first connecting rod 101 and the second connecting rod 102.

[0030] When a steel wire rope 200 is subjected to a large tension, the second hinge shaft 107 squeezes the flared structure 113 through the conical annular groove 111, causing the flared structure 113 to shrink and thus clamp the first connecting rod 101 and the second connecting rod 102. This can enhance the stability of the steel wire rope 200 and the connecting ring and prevent the failure of the seismic connection node of the steel structure.

[0031] Furthermore, a fixing plate 110 is provided in the middle of the first connecting ring 105 and the second connecting ring 106. The two fixing plates 110 are detachably fixedly connected by bolts 109. The fixing plate 110 is located on the opposite side of the first connecting ring 105 or the second connecting ring 106, and the fixing plate 110 protrudes from the opposite end face of the first connecting ring 105 or the second connecting ring 106.

[0032] The first connecting ring 105 and the second connecting ring 106 are detachably connected by bolts 109, facilitating the installation of the second hinge shaft 107 into the tapered annular groove 111. The fixing plate 110 protrudes from the opposite end face of the first connecting ring 105 or the second connecting ring 106, preventing the fixing plate 110 from easily affecting the deformation of the flared structure 113. After the first connecting ring 105 and the second connecting ring 106 are connected, the two fixing plates 110 can contact each other, allowing the opposite end faces of the first connecting ring 105 and the second connecting ring 106 to just accommodate the first connecting rod 101 and the second connecting rod 102.

[0033] Furthermore, the first connecting rod 101 and the second connecting rod 102 have the same structure. Both the first connecting rod 101 and the second connecting rod 102 include an integrally formed straight rod and a U-shaped connecting rod, with the straight rod and the U-shaped connecting rod extending along the same straight line. The straight rod can be inserted into the U-shaped connecting rod of another first connecting rod 101 or second connecting rod 102. The identical structure of the first connecting rod 101 and the second connecting rod 102 facilitates the processing of the connecting parts. In other embodiments, both the first connecting rod 101 and the second connecting rod 102 are straight rod-shaped structures.

[0034] like Figure 4 As shown, the U-shaped link of the first link 101 is hinged to the straight link of the second link 102 of the same connecting member through the first hinge shaft 104, and the straight link of the first link 101 is hinged to the U-shaped link of the second link 102 of the adjacent connecting member through the second hinge shaft 107.

[0035] Furthermore, the straight rod is provided with a first hinge hole, and the U-shaped connecting rod is provided with two coaxial second hinge holes. The first hinge hole and the second hinge hole can correspond to each other, so that the first hinge shaft 104 or the second hinge shaft 107 can be inserted. Two retaining rings 108 are sleeved on the second hinge shaft 107. The outer periphery of each second hinge hole is provided with a relief groove 112. The retaining ring 108 and the relief groove 112 correspond one-to-one, and the retaining ring 108 and the relief groove 112 are engaged in axial blocking fit of the second hinge hole.

[0036] After the second hinge shaft 107 is inserted into the first hinge hole and the second hinge hole, the retaining ring 108 prevents the second hinge shaft 107 from disengaging from the first hinge hole and the second hinge hole, thereby preventing the second hinge shaft 107 from disengaging from the first connecting rod 101 and the second connecting rod 102.

[0037] like Figure 8As shown, when the second hinge shaft 107 breaks, that is, when the seismic connection node of the steel structure encounters a large seismic load, the seismic connection node of the steel structure is in a failure state. The two ends of each second hinge shaft 107 along the length direction are sheared with the conical annular groove 111, so that the two ends of the second hinge shaft 107 along the length direction are sheared off. However, the remaining part of the second hinge shaft 107 can still connect the first connecting rod 101 with the second connecting rod 102 of the adjacent connecting member, so that the multiple wire rope cables 200 can still maintain the connection state and maintain the stability of the seismic connection node of the steel structure.

[0038] Furthermore, both the first connecting rod 101 and the second connecting rod 102 have threaded holes at their midpoints. The axis of the threaded holes is perpendicular to the axis of the connecting ring. A screw is threaded through the elastic plate 103, and the screw can be threaded into the threaded hole. This facilitates the assembly and disassembly of the elastic plate 103.

[0039] Furthermore, the wire rope cable 200 is provided with a cable head 201, which is hinged to the first hinge shaft 104. One end of the first hinge shaft 104 is threaded with a nut 202, which enables the cable head 201 to be detachably connected to the first hinge shaft 104.

[0040] Furthermore, the number of connectors is four. In other embodiments, the number of connectors is three or five or more. Figure 9 As shown, there are six connectors.

[0041] Based on the above embodiments, the usage principle and working process of the present invention are as follows: The first connecting rod 101 and the second connecting rod 102 are hinged together through the first hinge shaft 104 and connected to the cable head 201 of the wire rope cable 200. Then, the first connecting rod 101 and the second connecting rod 102 of the adjacent connecting member are hinged together through the second hinge shaft 107. Multiple second hinge shafts 107 are installed into the conical annular groove 111 of the first connecting ring 105 and the conical annular groove 111 of the second connecting ring 106. Finally, the first connecting ring 105 and the second connecting ring 106 are fixedly connected by bolts 109.

[0042] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0043] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A seismic-resistant connection node for a steel structure, characterized in that, Includes a connecting ring, a steel wire rope cable, and at least three connecting parts; At least three connectors are distributed around the circumference of the connecting ring. Each connector includes a first link and a second link. The first link and the second link of the same connector are hinged through a first hinge shaft, which is connected to the wire rope cable. At least three connecting members have first and second links alternately distributed around the circumference of a connecting ring. The first link is hinged to the second link of the adjacent connecting member through a second hinge axis. Both the first and second hinge axes extend along the axial direction of the connecting ring. The second hinge axis can rotate around the circumference of the connecting ring, and the strength of the second hinge axis is less than that of the first hinge axis.

2. The seismic connection node of the steel structure according to claim 1, characterized in that, An elastic plate is provided between two adjacent connectors. One end of the elastic plate is connected to the first link of one of the connectors, and the other end of the elastic plate is connected to the second link of the other connector. The elastic plate can keep the two adjacent connectors at a set angle.

3. The seismic connection node of the steel structure according to claim 2, characterized in that, The connecting ring includes a first connecting ring and a second connecting ring that are coaxially and detachably connected. The first connecting ring and the second connecting ring have the same structure and are arranged sequentially along their axial direction. Each of the opposite end faces of the first connecting ring and the second connecting ring is provided with a tapered annular groove. The tapered annular groove is coaxially arranged with the first connecting ring or the second connecting ring. The two ends of the second hinge shaft along the length direction are respectively located in the tapered annular groove of the first connecting ring and the tapered annular groove of the second connecting ring. The tapered annular groove causes the two ends of the second hinge shaft along the length direction to bend away from the axis of the first connecting ring or the second connecting ring.

4. The seismic connection node of the steel structure according to claim 3, characterized in that, A flared structure is formed at the outer peripheral edge of the opposite end face of the first connecting ring and the second connecting ring. When the second hinge shaft is subjected to a horizontal tension, the second hinge shaft squeezes the flared structure through the conical ring groove, causing the flared structure to shrink and thus clamping the first connecting rod and the second connecting rod.

5. The seismic connection node of the steel structure according to claim 4, characterized in that, Both the first connecting ring and the second connecting ring have a fixing plate in the middle. The two fixing plates are detachably fixed together by bolts. The fixing plate is located on the opposite side of the first connecting ring or the second connecting ring, and the fixing plate protrudes from the opposite end face of the first connecting ring or the second connecting ring.

6. The seismic connection node of the steel structure according to claim 5, characterized in that, The first link and the second link have the same structure. Both the first link and the second link include an integrally formed straight rod and a U-shaped link. The straight rod and the U-shaped link extend along the same straight line. The straight rod can be inserted into the U-shaped link of another first link or second link.

7. The seismic connection node of the steel structure according to claim 6, characterized in that, The straight rod is provided with a first hinge hole, and the U-shaped connecting rod is provided with two coaxial second hinge holes. The first hinge hole and the second hinge hole can correspond to each other, so that the first hinge shaft or the second hinge shaft can be inserted. Two retaining rings are sleeved on the second hinge shaft. The outer periphery of each second hinge hole is provided with a relief groove. The retaining ring and the relief groove correspond one-to-one, and the retaining ring and the relief groove are engaged in axial blocking fit of the second hinge hole.

8. The seismic connection node of the steel structure according to claim 2, characterized in that, Both the first and second connecting rods have threaded holes at their midpoints. The axis of the threaded holes is perpendicular to the axis of the connecting ring. A screw is threaded through the elastic plate, and the screw can be threaded into the threaded holes.

9. The seismic connection node of the steel structure according to claim 1, characterized in that, The wire rope cable is provided with a cable head, which is hinged to the first hinge shaft.

10. The seismic connection node of the steel structure according to claim 1, characterized in that, The number of connectors is four.

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