Spherical hinged joint of prefabricated steel column
Through the spherical articulated nodes of prefabricated steel columns, the helix articulated connection is realized, which solves the shortcomings of the rigid connection of traditional beams and columns in seismic performance, improves the seismic performance and space utilization efficiency of the building, and reduces construction costs and environmental impact.
Patent Information
- Application Number
- CN202422370019.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-09-27
AI Technical Summary
The rigid connection of traditional beams and columns has insufficient seismic resistance, which causes the columns to withstand significantly increased bending moments, limiting space utilization and increasing material costs.
The spherical articulated nodes of prefabricated steel columns are adopted to realize the helix articulated connection through the special design of the upper sphere, the lower sphere shell and the upper and lower column sections, and the assembly is completed by bolt connection and grouting steps.
It improves the seismic performance and flexibility of the structure, reduces the amount of on-site wet work, reduces construction difficulty and cost, and at the same time releases indoor space, which is in line with the concept of green building and sustainable development.
Smart Images
Figure CN223164038U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a building structure connection node, in particular to a spherical hinge node of a prefabricated steel column. Background Art
[0002] In traditional building structures, beam-column connections are a crucial part of the structural system, and their connection method directly affects the stability, seismic performance, and construction efficiency of the overall structure. Typically, beam-column connections in steel structural systems tend to be rigidly connected using welding or high-strength bolts, and this connection method plays an important role in structural design. However, in concrete structures, beam-column connections are more commonly achieved through integral casting technology to achieve rigid connections, ensuring the integrity and stability of the structure. Although rigid connections can effectively transmit shear forces and bending moments and enhance the overall rigidity of the structure, when faced with horizontal dynamic loads such as earthquakes, it may cause the columns to bear significantly increased bending moments, which has a direct impact on the vertical bearing capacity of the columns, forcing designers to increase the column cross-section to cope with it, thereby limiting the effective use of space and increasing material costs and construction expenses. Utility Model Content
[0003] The purpose of the utility model is to provide a spherical hinge node of a prefabricated steel column to solve the problem of poor seismic performance of a traditional column-beam rigid connection structure.
[0004] The utility model is achieved as follows: a spherical hinge node of a prefabricated steel column, the structure of which includes a bottom beam embedded part arranged in the bottom beam, a top beam embedded part arranged in the top beam, an upper hemisphere arranged on the bottom beam embedded part, and a prefabricated column arranged between the upper hemisphere and the top beam embedded part; the positions of the bottom beam embedded part and the top beam embedded part correspond to each other in upper and lower directions; the prefabricated column includes a lower column section arranged on the upper hemisphere and an upper column section connected to the lower end of the top beam embedded part.
[0005] Furthermore, the upper column section includes a top plate connected to the top beam embedded part, an upper column tube connected to the lower end of the top plate, and a lower hemispherical shell arranged in the upper column tube.
[0006] Furthermore, an outer flange extending horizontally outward is provided on the upper edge of the lower hemispherical shell, and a bayonet pin for engaging the outer flange is provided on the wall of the upper column.
[0007] Furthermore, an inner flange extending horizontally inward is provided at the lower end of the upper column.
[0008] Furthermore, the inner diameter of the inner flange is smaller than the outer diameter of the outer flange to prevent the lower hemispherical shell from slipping out of the upper column.
[0009] Further, when the outer flange of the lower hemispherical shell is clamped on the pin, the lower end of the lower hemispherical shell is higher than the lower end of the upper cylindrical tube.
[0010] Further, the lower column section includes a lower cylindrical tube and a cast-in-place body of a high-strength concrete column therein. An upper groove for cooperating with the lower hemispherical shell is provided at the upper end of the lower cylindrical tube, and a lower groove for cooperating with the upper hemispherical body is provided at the lower end of the lower cylindrical tube.
[0011] Through the special designs of the upper hemispherical body, the lower hemispherical shell, the upper column section and the lower column section, the present utility model realizes a truly articulated connection in all directions. This connection method not only improves the flexibility of the structure, but also can effectively disperse and absorb the energy generated by external forces such as earthquakes, enhancing the seismic performance of the overall structure.
[0012] The precast column in the present utility model can be industrially produced, greatly improving the production efficiency and quality consistency. Industrial production reduces the amount of on-site wet work, lowers the construction difficulty and labor cost, and also helps to shorten the construction period.
[0013] The on-site installation process of the present utility model is simple. The entire structure can be assembled through steps such as bolt-connecting the upper column section, removing the pins and grouting. In particular, the lower hemispherical shell is connected to the lower column section by naturally falling into the upper groove, which not only simplifies the installation process, but also improves the installation accuracy.
[0014] When the present utility model adopts a precast concrete-filled steel tubular structure as the inner column, due to its large axial compressive bearing capacity, the cross-sectional size of the inner column can be reduced, thereby releasing more indoor space, which is of great significance for improving the utilization efficiency of building space and meeting diverse space requirements.
[0015] The present utility model realizes the industrial production of components and the simplification of on-site installation. This solution shows significant economic benefits in terms of reducing construction costs, shortening the construction period and improving construction quality. At the same time, reducing the amount of on-site wet work and the impact of construction on the environment also conforms to the concepts of green buildings and sustainable development, having good social benefits. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is a schematic structural diagram of the present utility model.
[0017] Figure 2 is a schematic structural diagram of the upper column section of the present utility model after grouting.
[0018] In the figure: 1. Bottom beam; 2. Embedded part of bottom beam; 3. Top beam; 4. Embedded part of top beam; 5. Upper hemispherical body; 6. Lower column section; 7. Upper column section; 61. Lower column cylinder; 62. High-strength concrete column; 71. Upper column cylinder; 72. Lower hemispherical shell; 73. Outer flange; 74. Pin; 75. Inner flange; 76. Top plate. Detailed implementation mode
[0019] As Figure 1 and Figure 2 shown, the utility model includes an embedded part of bottom beam 2 arranged in the bottom beam 1, an embedded part of top beam 4 arranged in the top beam 3, an upper hemispherical body 5 connected to the embedded part of bottom beam 2, and a precast column arranged between the upper hemispherical body 5 and the embedded part of top beam 2. The precast column includes a lower column section 6 hinged to the upper hemispherical body 5 and an upper column section 7 connected to the lower end of the embedded part of top beam 4. The upper hemispherical body 5 is made of solid cast steel and welded to the embedded part of bottom beam 2. The embedded part of top beam 4 and the upper column section 7 are connected by bolts.
[0020] The embedded part of bottom beam 2 and the embedded part of top beam 4 correspond to each other up and down to ensure their alignment in the vertical direction to meet the installation requirements of subsequent components. The embedded part of bottom beam 2 and the embedded part of top beam 4 are made of welded H-shaped steel, with vertical slits opened on the web to facilitate the setting of beam stirrups and the passage of vertical beam longitudinal bars, and their spacing is determined according to the setting of stirrups. The upper end of the embedded part of bottom beam 2 is flush with the upper side of the bottom beam, and the lower end is flush with the lower side of the bottom beam. Similarly, the upper end of the embedded part of top beam 4 is flush with the upper side of the top beam, and the lower end is flush with the lower side of the bottom beam. The bottom beam 1 of this layer is the top beam 3 of the next layer, and the top beam 3 of this layer is the bottom beam 1 of the upper layer.
[0021] The upper column section 7 includes a top plate 76 connected to the embedded part of the top beam 4, an upper column cylinder 71 connected to the lower end of the top plate 76, and a lower hemispherical shell 72 arranged inside the upper column cylinder 71. An outwardly extending horizontal flange 73 is provided along the upper edge of the lower hemispherical shell 72. The diameter of the flange 73 is adapted to the diameter of the upper column cylinder 71. A retaining pin 74 for clamping the flange 73 of the lower hemispherical shell 72 is arranged through the wall of the upper column cylinder 71. Before the retaining pin 74 is removed, when the flange 73 of the lower hemispherical shell 72 is clamped on the retaining pin 74, the lower end of the lower hemispherical shell 72 is higher than the lower end of the upper column cylinder 71, and a gap is formed between the upper column section 7 and the lower column section 6, so as to facilitate the installation of the upper column section 7 or the lower column section 6 and avoid interference between the lower hemispherical shell 72 and the upper end of the lower column section 6. An inwardly extending horizontal flange 75 is arranged at the lower end of the upper column cylinder 71. The inner diameter of the flange 75 is smaller than the outer diameter of the flange 73. The flange 75 is used to clamp the lower hemispherical shell 72 after the retaining pin 74 is removed to prevent the lower hemispherical shell 72 from slipping out of the upper column cylinder 71. A grouting port is formed in the wall of the upper column cylinder 71. The grouting port is used to grout the inside of the upper column cylinder 71. Specifically, after the retaining pin 74 is removed and the lower hemispherical shell 72 falls into the lower column section 6, the upper column cylinder 71 above the lower hemispherical shell 72 is grouted through the grouting port.
[0022] The lower column section 6 includes a lower column cylinder 61 and a cast-in-place body of a high-strength concrete column 62 arranged inside it. An upper groove for cooperating with the lower hemispherical shell 72 is provided at the upper end of the lower column cylinder 61, and a lower groove for cooperating with the upper hemisphere 5 is provided at the lower end of the lower column cylinder 61. After the retaining pin 74 is removed, the lower hemispherical shell 72 falls into the upper groove at the upper end of the lower column section 6.
[0023] When the utility model is in use, after the lower column section 6 is installed in place, the upper column section 7 is bolted to the lower end of the embedded part of the top beam 4, and then the retaining pin 74 is pulled out. The lower hemispherical shell 72 naturally falls into the upper groove of the lower column section 6 and is in close contact with it. The upper column section 6 is filled with high-strength non-shrinkage grouting material through the grouting port, and the installation is completed.
Claims
1. A spherical hinge joint of a precast steel column, characterized in that, It includes a bottom beam embedded part arranged in the bottom beam, a top beam embedded part arranged in the top beam, an upper hemisphere arranged on the bottom beam embedded part, and a precast column arranged between the upper hemisphere and the top beam embedded part; the positions of the bottom beam embedded part and the top beam embedded part correspond up and down; the precast column includes a lower column section arranged on the upper hemisphere and an upper column section connected to the lower end of the top beam embedded part.
2. The spherical hinge joint of the prefabricated steel column according to claim 1, characterized in that, The upper column section includes a top plate connected to the top beam embedded part, an upper column barrel connected to the lower end of the top plate, and a lower hemispherical shell arranged in the upper column barrel.
3. The spherical hinge joint of the prefabricated steel column according to claim 2, characterized in that, An outwardly extending horizontal flange is arranged on the upper edge of the lower hemispherical shell, and a retaining pin for clamping the flange is arranged through the barrel wall of the upper column barrel.
4. The spherical hinge joint of the prefabricated steel column according to claim 3, characterized in that, An inwardly extending horizontal flange is arranged at the lower end of the upper column barrel.
5. The spherical hinge joint of the prefabricated steel column according to claim 4, characterized in that, The inner diameter of the inner flange is smaller than the outer diameter of the outer flange to prevent the lower hemispherical shell from slipping out of the upper column barrel.
6. The spherical hinge joint of the prefabricated steel column according to claim 3, characterized in that, When the outer flange of the lower hemispherical shell is clamped on the retaining pin, the lower end of the lower hemispherical shell is higher than the lower end of the upper column barrel.
7. The spherical hinge joint of the prefabricated steel column according to claim 2, characterized in that, The lower column section includes a lower column barrel and a cast-in-place body of a high-strength concrete column arranged therein. An upper groove for cooperating with the lower hemispherical shell is arranged at the upper end of the lower column barrel, and a lower groove for cooperating with the upper hemisphere is arranged at the lower end of the lower column barrel.