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CN-224213516-U - Crotch shaped steel structure connected node

CN224213516UCN 224213516 UCN224213516 UCN 224213516UCN-224213516-U

Abstract

The utility model relates to a crotch type steel structure connecting node which comprises a supporting inclined section, a supporting straight section, a chord member group and a web member group, wherein the end face of the supporting inclined section is connected with one end face of the supporting straight section, the central axis of the supporting inclined section is intersected with the central axis of the supporting straight section, the intersection point is A, the chord member group and the web member group are connected to the supporting straight section to form a crotch with the supporting straight section, the central axes of the chord member group, the web member group and the supporting straight section are intersected at the same point, and the intersection point is B and is positioned at the upper part of the intersection point A. The connecting node has the advantages that the intersection point A and the intersection point B are positioned at different positions on the central axis of the straight supporting section, stress concentration of the connecting node is avoided, the effectiveness of connection is ensured, and therefore the overall performance of the connecting node is improved.

Inventors

  • ZHANG KE
  • MA WEN
  • XIAO YAN

Assignees

  • 中信建筑设计研究总院有限公司

Dates

Publication Date
20260508
Application Date
20250426

Claims (10)

  1. 1. The crotch steel structure connecting node is characterized by comprising a supporting inclined section (1), a supporting straight section (2), a chord member group (3) and a web member group (4); The end face of the supporting inclined section (1) is connected with one end face of the supporting straight section (2), the central axis of the supporting inclined section (1) is intersected with the central axis of the supporting straight section (2), and the intersection point is A; The chord member group (3) and the web member group (4) are connected to the straight supporting section (2) to form a crotch with the straight supporting section (2), the central axes of the chord member group (3), the web member group (4) and the straight supporting section (2) are intersected at the same point, and the intersection point is B and is positioned at the upper part of the intersection point A.
  2. 2. The crotch steel structure connecting node according to claim 1, wherein the supporting inclined section (1) comprises a connecting section (11), a middle section (12) and a tail section (13) which are connected in sequence, and the connecting section (11), the middle section (12) and the tail section (13) are coaxial; One end of the connecting section (11) deviating from the middle section (12) is connected with one end of the supporting straight section (2), and an included angle between the connecting section (11) and the supporting straight section (2) is larger than 90 degrees; The end section of the connecting section (11) is larger than the end section of the tail section (13).
  3. 3. The crotch steel structure connection node according to claim 2, wherein the middle section (12) is in a truncated cone shape, and the outer diameter of the end of the middle section (12) connected with the connection section (11) is larger than the outer diameter of the end of the middle section (12) connected with the tail section (13).
  4. 4. The crotch steel structure connection node according to claim 3, wherein the gradient of the outer wall of the middle section (12) is 1:6-1:8.
  5. 5. The crotch steel structure connection node according to claim 2, wherein the chord group (3) comprises a first main chord (31), a second main chord (32), a first secondary chord (33), a second secondary chord (34), a third secondary chord (35), a fourth secondary chord (36); The first main chord member (31) and the second main chord member (32) are respectively connected to two sides of the straight supporting section (2), and an included angle between the first main chord member (31) and the straight supporting section (2) is equal to an included angle between the second main chord member (32) and the straight supporting section (2); The first secondary chords (33) and the fourth secondary chords (36) are connected to one side, provided with the first main chords (31), of the supporting straight section (2), and the second secondary chords (34) and the third secondary chords (35) are connected to one side, provided with the second main chords (32), of the supporting straight section (2).
  6. 6. The crotch steel structure connection node according to claim 5, wherein the first secondary chord (33) and the third secondary chord (35) are located on the side of the support straight section (2) close to the connection section (11), and the first primary chord (31), the second primary chord (32), the second secondary chord (34) and the fourth secondary chord (36) are located on the upper portions of the first secondary chord (33) and the third secondary chord (35).
  7. 7. The crotch steel structure connection node according to claim 5, wherein the central axis of the first main chord (31), the central axis of the second main chord (32), the central axis of the first secondary chord (33), the central axis of the second secondary chord (34), the central axis of the third secondary chord (35) and the central axis of the fourth secondary chord (36) all intersect on the central axis of the support straight section (2), and the intersection point is a.
  8. 8. The crotch steel structure connection node according to claim 7, characterized in that the web group (4) comprises a first main web member (41), a second main web member (42), a first secondary web member (43), a second secondary web member (44); The first main web members (41) and the first secondary web members (43) are connected to one side of the straight support section (2) provided with the first main chord member (31), and the second main web members (42) and the second secondary web members (44) are connected to one side of the straight support section (2) provided with the second main chord member (32).
  9. 9. The crotch steel structure connection node according to claim 8, wherein the central axis of the first main web member (41), the central axis of the second main web member (42), the central axis of the first secondary web member (43) and the central axis of the second secondary web member (44) all intersect on the central axis of the supporting straight section (2), and the intersection point is a.
  10. 10. A crotch steel structure connection node according to any one of claims 1-9, characterized in that the junction of the supporting diagonal section (1) and the supporting straight section (2) is provided with stiffening ribs (5).

Description

Crotch shaped steel structure connected node Technical Field The utility model relates to the technical field of building steel structures, in particular to a crotch-shaped steel structure connecting node. Background In the field of building steel structure design, the design of the connection node is important. When the steel column supports are connected with the truss chords and the web members, more rod members are intersected to form a crotch-like node form, and the node is more complex in stress and strict in construction quality. In the traditional design, the structure at least has the following improvement that the post support section is smaller, so that the welding seam interval of each rod piece is narrower, the construction operation space is limited, the welding quality is difficult to guarantee, and the connection reliability is further affected. Disclosure of utility model Aiming at the technical problems in the prior art, the utility model provides the crotch steel structure connecting node, which reduces the overall cost, is convenient to construct and can ensure the integrity and the safety of the node. The technical scheme for solving the technical problems is that the crotch-shaped steel structure connecting node comprises a supporting inclined section, a supporting straight section, a chord member group and a web member group; The end face of the supporting inclined section is connected with one end face of the supporting straight section, the central axis of the supporting inclined section is intersected with the central axis of the supporting straight section, and the intersection point is A; The chord member group and the web member group are connected to the straight supporting section to form a crotch with the straight supporting section, the central axes of the chord member group, the web member group and the straight supporting section are intersected at the same point, and the intersection point is B and is located at the upper part of the intersection point A. As a further technical scheme, the supporting inclined section comprises a connecting section, a middle section and a tail section which are connected in sequence, and the connecting section, the middle section and the tail section are coaxial; One end of the connecting section, which is away from the middle section, is connected with one end of the supporting straight section, and an included angle between the connecting section and the supporting straight section is larger than 90 degrees; the end section of the connecting section is larger than the end section of the tail section. As a further technical scheme, the middle section is in a round table shape, and the outer diameter of one end of the middle section connected with the connecting section is larger than that of one end of the middle section connected with the tail section. As a further technical scheme, the gradient of the outer wall of the middle section is 1:6-1:8. As a further technical scheme, the chord group comprises a first main chord, a second main chord, a first secondary chord, a second secondary chord, a third secondary chord and a fourth secondary chord; The first main chord member and the second main chord member are respectively connected to two sides of the support straight section, and an included angle between the first chord member and the support straight section is equal to an included angle between the second main chord member and the support straight section; The first secondary chord member and the fourth secondary chord member are connected to one side, provided with the first main chord member, of the support straight section, and the second secondary chord member and the third secondary chord member are connected to one side, provided with the second main chord member, of the support straight section. As a further technical scheme, the first secondary chord member and the third secondary chord member are both positioned on one side, close to the connecting section, of the supporting straight section, and the first primary chord member, the second secondary chord member and the fourth secondary chord member are both positioned on the upper portions of the first secondary chord member and the third secondary chord member. As a further technical scheme, the central axis of the first main chord member, the central axis of the second main chord member, the central axis of the first secondary chord member, the central axis of the second secondary chord member, the central axis of the third secondary chord member and the central axis of the fourth secondary chord member are all intersected on the central axis of the supporting straight section, and the intersection point is A. As a further technical scheme, the web member group comprises a first main web member, a second main web member, a first secondary web member and a second secondary web member; The first main web member and the first secondary web member are connected to one side of