Joint of composite column and multi-dimensional steel beam

Abstract

The utility model discloses a kind of connecting nodes of composite column and multi-dimensional steel beam, oblique box-shaped steel beam end and transverse H-shaped steel beam end are welded on the steel pipe of composite column, a circle of transverse force transmission plate is welded on the steel pipe, box-shaped steel beam end lower end is welded with the upper side of force transmission plate, the end of H-shaped steel beam end away from composite column is equipped with positioning plate for positioning when butt-joint adjacent H-shaped steel beam section and connecting plate for connecting;Several pieces of transverse slotted lacing plate are welded on the steel pipe and distributed around the circumference, slotted lacing plate is equipped with clamping groove, and slotted lacing plate is used for radial limiting vertical longitudinal reinforcement and height limiting stirrup using clamping groove. The node is convenient to butt-joint, ensures the position degree of outer steel bar, avoids the defect that oblique steel beam lower end is prone to deformation.

Description

Technical Field

[0001] This utility model belongs to the field of steel-concrete structures, specifically relating to a connection node between a composite column and a multi-dimensional steel beam. Background Technology

[0002] In stadiums, exhibition halls and other large-span irregular buildings, as well as in the transfer floors of super high-rise buildings, there are usually connection nodes between composite columns and multi-dimensional steel beams. These nodes are the core hubs for load transfer and collaborative work in the structural system, and their performance directly determines the stability of the building.

[0003] Before pouring the outer layer of concrete for composite columns, steel beams need to be installed on the steel pipes of the composite column, then the outer layer of reinforcing bars needs to be laid out and formwork erected before pouring. For the connection nodes between composite columns and multi-dimensional steel beams, the composite column is connected to both diagonal and transverse steel beams, which not only makes installation difficult but also makes it hard to position the outer layer of reinforcing bars. Furthermore, the lower end of the diagonal steel beams is prone to deformation, thus affecting the stability of the structure. Utility Model Content

[0004] The purpose of this utility model is to provide a connection node between a composite column and a multi-dimensional steel beam, which is easy to connect, ensures the position accuracy of the outer layer of steel bars, and avoids the defect that the lower end of the inclined steel beam is prone to deformation.

[0005] The technical solution adopted in this utility model is: A connection node between a composite column and a multidimensional steel beam is disclosed. The composite column has inclined box-shaped steel beam ends and transverse H-shaped steel beam ends welded to its steel pipe. A transverse force transmission plate is welded around the steel pipe. The lower end of the box-shaped steel beam ends is welded to the upper side of the force transmission plate. The end of the H-shaped steel beam ends away from the composite column is provided with a positioning plate for positioning when connecting adjacent H-shaped steel beam segments and a connecting plate for connection. Several transverse grooved reinforcement plates are welded around the steel pipe in a circumferential direction. The grooved reinforcement plates are provided with slots. The grooved reinforcement plates are used to radially limit the vertical longitudinal reinforcement and height limit the stirrups.

[0006] Preferably, the outer surface of the steel pipe of the composite column is welded with studs.

[0007] Preferably, a support plate is welded between the force transmission plate and the steel pipe, and between the grooved reinforcing plate and the steel pipe.

[0008] Preferably, a reinforcing plate is welded to the bottom of the end of the H-beam, and the reinforcing plate is parallel to and close to the arc surface of the steel pipe.

[0009] Preferably, the positioning plate is located on the upper flange plate at the end of the H-shaped steel beam and is partially cantilevered.

[0010] Preferably, the connecting plate is located on both sides of the web at the end of the H-beam and is partially cantilevered. The connecting plate is provided with bolt holes for accommodating high-strength bolts.

[0011] Preferably, studs are welded to the upper and lower flange plates at the ends of the H-beam.

[0012] Preferably, stiffening ribs are welded to both sides of the web plate at the end of the H-beam, and the stiffening ribs are arranged at intervals along the length of the end of the H-beam.

[0013] Preferably, the grooved reinforcing slabs are staggered in height.

[0014] The beneficial effects of this utility model are: The ends of box-section steel beams and H-section steel beams can be prefabricated in the factory and spliced ​​on site. Due to the segmented splicing, the end dimensions and weight are relatively small, allowing for precise positioning at the corresponding design positions on the composite column. Simultaneously, the positioning plate ensures the alignment accuracy between the H-section steel beam end and adjacent H-section steel beam segments, controlling installation deviations (≤2mm) and significantly reducing on-site positioning time. The grooved reinforcement plate provides radial restraint for the vertical longitudinal reinforcement and height restraint for the stirrups, ensuring the positional accuracy of the outer layer of reinforcement in the composite column. Furthermore, the grooved reinforcement plate increases the bond strength of the cast-in-place concrete. The lower end of the box-section steel beam end is welded to the upper side of the force-transfer plate, which is welded in a ring around the steel pipe. The force on the inclined box-section steel beam end can be transferred to the steel pipe through the force-transfer plate, avoiding the defect of easy deformation at the lower end of the inclined steel beam. Attached Figure Description

[0015] Figure 1 This is a three-dimensional view of the studs at the connection node between the composite column and the multi-dimensional steel beam in this utility model. For ease of observation, the studs on the steel pipe of the composite column are not shown.

[0016] In the diagram: 1-Composite column; 2-End of box girder; 3-Force transfer plate; 4-Support plate; 5-Groove reinforcement plate; 6-Strengthening plate; 7-Stiffening rib; 8-End of H-beam; 9-Connecting plate; 10-Positioning plate; 11-Stud. Detailed Implementation

[0017] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0018] This embodiment discloses a connection node between a composite column and a multidimensional steel beam, such as... Figure 1As shown: Inclined box-shaped steel beam end 2 and transverse H-shaped steel beam end 8 are welded to the steel pipe of the composite column 1. A transverse force transmission plate 3 is welded to the steel pipe. The lower end of the box-shaped steel beam end 2 is welded to the upper side of the force transmission plate 3. The end of the H-shaped steel beam end 8 away from the composite column 1 is provided with a positioning plate 10 for positioning when connecting adjacent H-shaped steel beam segments and a connecting plate 9 for connection. Several transverse grooved reinforcement plates 5 are welded around the steel pipe in a circumferential direction. The grooved reinforcement plates 5 are provided with slots. The grooved reinforcement plates 5 are used to radially limit the vertical longitudinal reinforcement and limit the height of the stirrups by using the slots (the height limit is achieved when the stirrups are placed on the grooved reinforcement plates 5).

[0019] Based on the above plan: The box girder end 2 and the H-beam end 8 can be prefabricated in the factory and spliced ​​on site. Due to the segmented splicing, the end size and weight are small, so they can be accurately positioned on the corresponding design position on the composite column 1. At the same time, the positioning plate 10 can ensure the docking accuracy between the H-beam end 8 and the adjacent H-beam segment, which can not only control the installation deviation (installation deviation ≤2mm), but also significantly shorten the on-site positioning time. The grooved reinforcement plate 5 can radially limit the vertical longitudinal reinforcement and height limit the stirrups, ensuring the position accuracy of the outer layer of reinforcement in the composite column 1. In addition, the grooved reinforcement plate 5 can also increase the bond strength of the cast-in-place concrete. The lower end of the box-shaped steel beam end 2 is welded to the upper side of the force transmission plate 3. The force transmission plate 3 is welded in a circle on the steel pipe. The force on the inclined box-shaped steel beam end 2 can be transmitted to the steel pipe through the force transmission plate 3, avoiding the defect that the lower end of the inclined steel beam is prone to deformation.

[0020] In this embodiment, preferably, the outer surface of the steel pipe of the composite column 1 is welded with studs 11, which can enhance the bond strength between the steel pipe and the cast-in-place concrete.

[0021] In this embodiment, preferably, as follows: Figure 1 As shown: Support plates 4 are welded between the force transmission plate 3 and the steel pipe, and between the grooved reinforcing plate 5 and the steel pipe. Support plates 4 can improve the stability of the force transmission plate 3 and the grooved reinforcing plate 5.

[0022] In this embodiment, preferably, as follows: Figure 1 As shown: A reinforcing plate 6 is welded to the bottom of the H-beam end 8. The reinforcing plate 6 is parallel to and close to the arc surface of the steel pipe. The reinforcing plate 6 can not only enhance the load-bearing performance of the bottom of the H-beam end 8, but also be used as a stiffening plate.

[0023] In this embodiment, preferably, as follows: Figure 1As shown: the positioning plate 10 is set on the upper flange plate of the H-beam end 8 and is partially cantilevered; the connecting plate 9 is set on both sides of the web of the H-beam end 8 and is partially cantilevered; the connecting plate 9 has bolt holes for high-strength bolts; when the H-beam end 8 is connected to an adjacent H-beam segment, the positioning plate 10 is used for positioning, and then the connecting plate 9 is used with high-strength bolts to achieve the connection. This double shear connection structure is stable.

[0024] In this embodiment, preferably, as follows: Figure 1 As shown: Studs 11 are welded to the upper and lower flange plates of the H-beam end 8. The studs 11 can enhance the bond strength between the H-beam end 8 and the cast-in-place concrete.

[0025] In this embodiment, preferably, as follows: Figure 1 As shown: Stiffening ribs 7 are welded to both sides of the upper web of the H-beam end 8. The stiffening ribs 7 are arranged at intervals along the length of the H-beam end 8. The stiffening ribs 7 can improve the stiffness and force transmission stability of the H-beam end 8.

[0026] In this embodiment, preferably, as follows: Figure 1 As shown: The grooved gusset plates 5 are staggered in height, which facilitates installation and avoids stress concentration.

[0027] This node can be installed using a factory prefabrication + on-site assembly method, significantly reducing on-site wet work. Specifically: the box girder end 2 and the remaining box girder segments, the H-beam end 8 and the remaining H-beam segments, the force transfer plate 3, the grooved stiffening plate 5, the stiffening rib 7, the reinforcing plate 6, and the support plate 4 are prefabricated in the factory. The studs 11, stiffening ribs 7, reinforcing plates 6, and support plates 4 are pre-positioned and installed in the factory. In this embodiment, the box girder end 2 and the remaining box girder segments are made of Q345B steel, with the ends cut to fit the outer diameter of the steel pipe. The H-beam end 8 and the remaining H-beam segments are made of Q... 355B steel is used, with the end cuts adapted to the outer diameter of the steel pipe. The grooved reinforcement plate 5 is made of Q235B steel plate (8mm thick), and the stiffening ribs 7, reinforcing plates 6, and support plates 4 are made of Q345B steel plate (10mm thick). During on-site assembly, the bottom composite column segment is hoisted first, and the verticality is corrected before pouring the foundation grout. Then, the remaining composite column segments are positioned and hoisted in sequence. When construction reaches the node area, the box girder end 2, H-beam end 8, force transmission plate 3, positioning plate 10, and grooved reinforcement plate 5 are welded first. Then, the outer layer of steel reinforcement in the node area is installed, the node area formwork is erected, and finally, the concrete is poured.

[0028] The embodiments described above are some, but not all, of the embodiments of this application. The detailed description of the embodiments of this application is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

Claims

1. A connection node between a composite column and a multidimensional steel beam, characterized in that: The composite column has inclined box-shaped steel beam ends and transverse H-shaped steel beam ends welded to its steel pipe. A transverse force transmission plate is welded around the steel pipe. The lower end of the box-shaped steel beam end is welded to the upper side of the force transmission plate. The end of the H-shaped steel beam end away from the composite column is provided with a positioning plate for positioning when connecting adjacent H-shaped steel beam segments and a connecting plate for connection. Several transverse grooved reinforcement plates are welded around the steel pipe in a circumferential direction. The grooved reinforcement plates are provided with slots. The grooved reinforcement plates are used to radially limit the vertical longitudinal reinforcement and limit the height of the stirrups.

2. The connection node between the composite column and the multidimensional steel beam as described in claim 1, characterized in that: The outer surface of the steel pipe of the composite column is welded with studs.

3. The connection node between the composite column and the multidimensional steel beam as described in claim 1, characterized in that: Support plates are welded between the force transmission plate and the steel pipe, and between the grooved reinforcing plate and the steel pipe.

4. The connection node between the composite column and the multidimensional steel beam as described in claim 1, characterized in that: A reinforcing plate is welded to the bottom of the end of the H-beam. The reinforcing plate is parallel to the arc surface of the steel pipe and close to the steel pipe.

5. The connection node between the composite column and the multidimensional steel beam as described in claim 1, characterized in that: The positioning plate is set on the upper flange plate at the end of the H-shaped steel beam and is partially cantilevered.

6. The connection node between the composite column and the multidimensional steel beam as described in claim 1, characterized in that: The connecting plate is located on both sides of the web at the end of the H-beam and is partially cantilevered. The connecting plate has bolt holes for accommodating high-strength bolts.

7. The connection node between the composite column and the multidimensional steel beam as described in claim 1, characterized in that: Studs are welded to the upper and lower flange plates at the ends of the H-beam.

8. The connection node between the composite column and the multidimensional steel beam as described in claim 1, characterized in that: Stiffening ribs are welded to both sides of the web plate at the end of the H-beam, and the stiffening ribs are arranged at intervals along the length of the end of the H-beam.

9. The connection node between the composite column and the multidimensional steel beam as described in claim 1, characterized in that: The grooved reinforcing slabs are staggered in height.

Images