Hinge joint of concrete column and steel beam
The ten-cross steel frame connection between concrete columns and steel beams simplifies the connection process, reducing labor and material costs while ensuring reliable force transmission and uniform load distribution.
Patent Information
- Application Number
- CN202421964658.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-14
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-08-14
AI Technical Summary
The embedding of the articulated connection nodes between existing concrete columns and steel beams is large, and the steel bars are difficult to arrange, which affects the elevation and flatness of the embedded parts, resulting in complex construction and high material costs.
Cross steel bones are used as the intermediate connection member, prefabricated in the factory and assembled on site, combining shear bonds and high-strength grouting materials to realize the articulated connection between concrete columns and steel beams, simplifying the construction process and improving installation efficiency.
Reliable connection between concrete columns and steel beams is achieved, construction complexity and material costs are reduced, and stress uniformity and installation convenience are ensured.
Smart Images
Figure CN223103864U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of civil engineering beam-column connections, and particularly to a hinged connection node between a concrete column and a steel beam. Background Technique
[0002] Existing single- and multi-story factory building structures usually adopt a hybrid structure of concrete columns + steel structure roofs. This system makes full use of the advantages of the steel beam having a relatively light self-weight, good ductility, being suitable for large-span bending resistance, and the concrete column having strong compressive capacity and good durability to obtain the best structural economy. In this system, the connection of the beam-column joint is usually designed as a hinge, allowing the beam end to have a small rotational deformation in the column top area, which can avoid transferring a large bending moment to the concrete column with strong compressive capacity but slightly weaker bending capacity, and can avoid the indoor space being limited due to the oversized cross-section of the concrete column.
[0003] How to achieve the hinge of the beam-column joint has become the key point of this system. The conventional method is to set embedded parts and node plates around the column top and then bolt-connect them to the steel beam. This method has a large amount of embedded work, difficult reinforcement arrangement, and it is very easy for the column reinforcement and the embedded part reinforcement to collide, and the concrete pouring is very likely to affect the elevation and flatness of the embedded part, thus affecting the accurate connection of the subsequent steel beam. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a hinged connection node between a concrete column and a steel beam aiming at the deficiencies of the prior art. It uses a cross-shaped steel skeleton as the core connection component to realize the connection between the concrete column and the steel beam. The cross-shaped steel skeleton and related bottom plates, shear keys, and stiffening diaphragms can be prefabricated in the factory, and the on-site assembly is simple and the workload is small. It can realize the hinged rotation at the top of the concrete column while ensuring the continuous and uniform force of the steel beam, and avoid bringing a large burden to the concrete column.
[0005] The technical solution adopted by the utility model to solve its technical problems is: a hinged connection node between a concrete column and a steel beam, including a concrete column, a steel beam, and a cross-shaped steel skeleton as an intermediate connection component connecting the concrete column and the steel beam. The cross-shaped steel skeleton is fixed above the concrete column, and a shear key is arranged between the two. The steel beam is welded or bolt-welded to the cross-shaped steel skeleton; the cross-shaped steel skeleton is orthogonally cross-shaped, welded by two cross-shaped rib plates and four end plates, and a bottom plate is welded at the bottom.
[0006] Preferably, anchor bolts are embedded during the pouring of the concrete column, and a shear groove is preset in the center of the concrete column.
[0007] Preferably, the anchor bolts pass through the bottom plate, and the bottom plate is fixed to the top of the concrete column by nuts.
[0008] Preferably, after the concrete column is poured and cured, high-strength grouting material for pouring the shear key and leveling the top surface is provided at the top thereof.
[0009] Preferably, the steel beam is an I-beam, and stiffening diaphragms are provided on the cross-shaped steel skeleton at the elevation levels aligned with the upper and lower flanges of the steel beam.
[0010] Preferably, the web of the steel beam is aligned with the rib plate.
[0011] Preferably, a connecting plate hinged to the web of the steel beam is provided on the end plate of the cross-shaped steel skeleton.
[0012] Preferably, if the heights or widths of multiple steel beams connected by the cross-shaped steel skeleton are not equal, the flange of the lower steel beam is unfolded upward or downward at the welding joint to be aligned with the stiffening diaphragm, and the flange of the narrower steel beam is widened at the welding joint to be equal to the end plate.
[0013] Preferably, the bottom plate is circular or regular polygon, and the shear key is welded to the bottom surface of the bottom plate.
[0014] Preferably, the cross section of the shear key is cross-shaped or I-shaped.
[0015] Preferably, the contact surface between the bottom plate and the high-strength grouting material is a horizontal plane.
[0016] The beneficial effects of the present utility model are as follows: A hinged connection node between a concrete column and a steel beam includes a concrete column, a steel beam, and a cross-shaped steel skeleton as an intermediate connecting member connecting the concrete column and the steel beam. The cross-shaped steel skeleton is fixed above the concrete column, and a shear key is provided between the two. The steel beam is welded or bolt-welded to the cross-shaped steel skeleton. The cross-shaped steel skeleton is an orthogonal cross shape, welded by two cross-shaped rib plates and four end plates, and a bottom plate is welded at the bottom. The present utility model connects the steel beam through the cross-shaped steel skeleton. The cross-shaped steel skeleton can be prefabricated in the factory, with convenient processing, rapid construction, and reliable force transmission. Then, it is connected to the frame column through the bottom plate and anchor bolts, improving the installation efficiency, effectively avoiding the problems of large amount of embedded parts and complex processes in conventional beam-column hinged nodes, quickly realizing the force mode of beam-column hinged at the top of the column, and significantly saving material and labor costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a perspective view of a hinged connection node between a concrete column and a steel beam of the present utility model;
[0018] Figure 2 is a front view of a hinged connection node between a concrete column and a steel beam of the present utility model;
[0019] Figure 3 is Figure 2 a top view of
[0020] Figure 4 is Figure 2 the sectional view taken along line A-A;
[0021] Figure 5 is Figure 2 the sectional view taken along line B-B;
[0022] Figure 6 is Figure 2 the sectional view taken along line C-C;
[0023] Figure 7 is Figure 2 the sectional view taken along line D-D.
[0024] Explanation of the reference numerals:
[0025] 1 - concrete column, 11 - anchor bolt, 12 - shear key groove, 2 - steel beam, 3 - cruciform steel section, 31 - rib plate, 32 - end plate, 33 - bottom plate, 34 - stiffening diaphragm, 35 - connecting plate, 4 - shear key, 5 - high-strength grouting material. Specific embodiments
[0026] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the scope of implementation of the present utility model is not limited thereto.
[0027] As Figures 1 to 7 shown, a hinged connection node between a concrete column and a steel beam in this embodiment includes a concrete column 1, a steel beam 2, and a cruciform steel section 3 serving as an intermediate connecting member to connect the concrete column 1 and the steel beam 2. The cruciform steel section 3 is fixed above the concrete column 1, and a shear key 4 is provided between the two. The steel beam 2 is bolt-welded to the cruciform steel section 3.
[0028] In this embodiment, the cruciform steel section is used as the intermediate member connecting the concrete beam 1 and the steel beam 2, but it is not limited to steel column sections with other cross-sectional shapes in actual construction; the cruciform steel section 3 includes two rib plates 31 orthogonally welded in a cross shape in the middle. End plates 32 are welded to the outer ends of the rib plates 31, and then the bottoms of the two are welded together with a bottom plate 33. The bottom plate 33 serves as the connecting plate between the cruciform steel section 3 and the concrete beam 1. Anchor bolts 11 are embedded during the pouring of the concrete beam 1. When the cruciform steel section 3 is installed, the anchor bolts 11 pass through the bottom plate 33 and are fixed with bolts.
[0029] To enhance the shear resistance of the connection node between the cruciform steel section 3 and the concrete beam 1, a shear key 4 is provided between the two; and for the convenience of quick installation, in this embodiment, the shear key 4 is vertically welded to the bottom plate 33, and a shear groove 12 is reserved when the concrete beam 1 is cast. During installation, the shear key 4 is inserted into the shear groove 12. In addition, to ensure that the cruciform steel section 3 is vertical after installation and can be stably supported by the lower support column, after the concrete beam 1 is cast and cured, high-strength grouting material 5 is poured again on its top. The thickness of the high-strength grouting material 5 is not large, but the construction accuracy is high. Using it to fill the shear groove 12 can make it more fitting with the shear key 4 and reduce the gap between the two; the top of the high-strength grouting material 5 is leveled, so that after the cruciform steel section 3 is installed, the bottom plate 33 fits the high-strength grouting material 5, and the contact surface between the two is a horizontal plane.
[0030] The cross-section of the steel beam 2 can adopt any shape, such as box-shaped, I-shaped, etc., and the steel beam 2 can also be inclined at any angle. In this embodiment, an I-shaped steel beam is adopted and is parallel to the horizontal plane. To facilitate the installation of the steel beam 2, in this embodiment, a connecting plate 35 hinged to the web of the steel beam 2 is provided on the end plate 32. During construction, the web of the steel beam 2 can be bolted to the connecting plate 35 first, and then the upper and lower flanges of the steel beam 2 are welded to the end plate 32.
[0031] In this embodiment, each of the four end plates 32 of the cruciform steel section 3 is connected to a steel beam 2. To enhance the strength of the connection point between the cruciform steel section 3 and the steel beam 2, stiffening diaphragms 34 are arranged at the same elevation as the upper and lower flanges of the steel beam 2 on the cruciform steel section 3, and each stiffening diaphragm 34 is welded to the two adjacent rib plates 31 and two end plates 32.
[0032] In this embodiment, the height of two relatively opposite steel beams 2 is less than that of the other two steel beams 2. Then, the stiffening diaphragms 34 are aligned with the flanges of the two higher steel beams 2. For the two shorter steel beams 2, their upper flanges are aligned with the upper stiffening diaphragms 34, and the lower flanges are bent downward near the connection part so that the ends are aligned with the lower stiffening diaphragms 34.
[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention. For the convenience of describing the technical solutions, the front, back, left, right, up, middle, down, etc. directions used are based on the drawings, rather than a limitation on the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.
Claims
1. An articulated connection node between a concrete column and a steel beam, characterized in that: It includes a concrete column, a steel beam, and a cross-shaped steel section serving as an intermediate connecting member to connect the concrete column and the steel beam. The cross-shaped steel section is fixed above the concrete column, and a shear key is provided between them. The steel beam is connected to the cross-shaped steel section by welding or bolt welding; the cross-shaped steel section is orthogonally cross-shaped and is formed by welding two cross-shaped rib plates and four end plates, and a bottom plate is welded at the bottom.
2. The articulated connection node between a concrete column and a steel beam according to claim 1, characterized in that: Anchor bolts are embedded during the casting of the concrete column, and a shear groove is preset in the center of the concrete column.
3. The articulated connection node between a concrete column and a steel beam according to claim 2, characterized in that: The anchor bolts pass through the bottom plate, and the bottom plate is fixed to the top of the concrete column by nuts.
4. The articulated connection node between a concrete column and a steel beam according to claim 2, characterized in that: After the concrete column is cast and cured, high-strength grouting material is provided at its top for grouting the shear groove and leveling the top surface.
5. A hinged connection node between a concrete column and a steel beam according to claim 1, characterized in that: The steel beam is an I-beam, and stiffening diaphragms are provided on the cross-shaped steel section at the elevation of the upper and lower flanges of the steel beam.
6. The articulated connection node between a concrete column and a steel beam according to claim 5, characterized in that: The end plate is provided with a connecting plate hinged to the web of the steel beam.
7. The articulated connection node between a concrete column and a steel beam according to claim 5, characterized in that: If the heights or widths of multiple steel beams connected by the cross-shaped steel section are not equal, the flange of the lower steel beam is unfolded upward or downward at the welding joint to align with the stiffening diaphragm, and the flange of the narrower steel beam is widened at the welding joint to be equal to the end plate.
8. The articulated connection joint between a concrete column and a steel beam according to claim 1, characterized in that: The bottom plate is circular or regular polygon, and the shear key is welded to the bottom surface of the bottom plate.
9. The articulated connection node between a concrete column and a steel beam according to claim 1, characterized in that: The cross section of the shear key is cross-shaped or I-shaped.
10. A hinged connection node between a concrete column and a steel beam according to claim 4, wherein: The contact surface between the bottom plate and the high-strength grouting material is a horizontal plane.