Novel beam-column shear connection structure and building structure
By designing a boot beam and embedded parts to combine shear-resistant connection components at the beam-column intersection, the problem of steel bar damage in the existing technology is solved, a stable connection between steel columns and concrete columns is achieved, and the integrity and load-bearing capacity of the structure are guaranteed.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WISCODRI WUGANG ENG
- Filing Date
- 2025-08-18
- Publication Date
- 2026-07-14
AI Technical Summary
At the intersection of beams and columns in steel-concrete hybrid structures, existing technology makes it difficult to pre-reserve shear grooves at the top of concrete columns, leading to damage to the reinforcing steel and affecting the integrity and load-bearing capacity of the structure.
A novel beam-column shear connection structure is designed, which adopts a combination of a boot beam and embedded parts to form a shear connection component, including a shear connection plate, a shear anchor plate, and shear anchor bars. By connecting the boot beam to the concrete beam and column, the groove at the top of the concrete column is avoided, thus achieving a stable connection between the steel column and the concrete column.
This method achieves a stable connection between steel columns and concrete columns, ensuring the integrity and load-bearing capacity of the structure and avoiding the problem of steel bar damage in traditional processes.
Smart Images
Figure CN224495397U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building structures, specifically to a novel beam-column shear connection structure and building structure. Background Technology
[0002] With the development of building technology, steel-concrete hybrid structural systems are increasingly widely used in engineering fields because they can fully utilize the mechanical advantages of both materials. A typical hybrid structure is a reinforced concrete frame at the bottom, with a light steel structure (including steel frames or portal frames) on top. This system has advantages such as strong material complementarity, low cost, good seismic performance, and high space utilization.
[0003] In the load-bearing system of steel-concrete hybrid structures, the mechanical properties of the joint connections determine the overall structural safety and stability. Among these, the connection between the steel column base and the concrete structure is a crucial hub for the transmission of forces between the upper and lower structures. Currently, the industry commonly uses column base anchor bolt connections to achieve the fixation of the steel column base to the concrete substrate and the transmission of forces.
[0004] For the shear design of steel column bases, current relevant codes stipulate two solutions: First, for anchor bolt connections with boot-shaped beams, the anchor bolts must not bear shear loads; the shear bearing capacity of the column base is provided by the friction between the base slab and the concrete foundation, with a friction coefficient of 0.4. Second, when the horizontal shear force exceeds the friction bearing limit, shear keys must be added to meet the shear requirements. Generally, shear keys are required for steel column bases along their length.
[0005] The traditional construction process for shear keys involves pre-reserving shear grooves (pits) during the precast stage of the concrete structure, and then inserting the shear keys at the bottom of the column into the grooves during steel column installation. However, this process has the following problems at the column top connection nodes in mixed structures: when the boot-beam type steel column base is installed on the top of the concrete column and is located in the beam-column intersection area, due to the complex interlacing of the reinforcing bars in this area, it is difficult to groove while ensuring the continuity of the original load-bearing reinforcement; if grooves are grooved in this area according to the traditional process, the load-bearing reinforcement will inevitably be cut off or damaged, compromising the integrity and load-bearing capacity of the concrete structure and creating safety hazards.
[0006] Therefore, it is necessary to improve the existing technology to solve the problem of pre-reserving shear grooves at the top of concrete columns (where beams and columns meet). Summary of the Invention
[0007] The purpose of this utility model is to provide a new beam-column shear connection structure and building structure to address the shortcomings of the existing technology, thereby solving the problem of difficulty in reserving shear grooves at the top of concrete columns in the existing technology, and ensuring the integrity and load-bearing capacity of the structure.
[0008] The technical solution adopted in this utility model is: a novel beam-column shear connection structure, including a concrete column, a concrete beam, a steel column, and a shear connection component;
[0009] The concrete column is located below, and its top two sides are connected to the concrete beams respectively.
[0010] The lower part of the steel column is fixed with a boot beam, which is located at the top of the concrete column. The boot beam is connected to the upper part of the embedded part, and the lower part of the embedded part is embedded in the concrete column.
[0011] The outer side of the boot beam is provided with a shear connection component. The upper end of the shear connection component is connected to the boot beam, and the lower end of the shear connection component is embedded in the concrete beam.
[0012] According to the above scheme, the shear connection assembly includes a shear connection plate, a shear anchor plate, and shear anchor bars; the upper end of the shear connection plate is connected to the boot beam, the lower end of the shear connection plate is connected to the shear anchor plate, and the shear anchor plate is horizontally positioned at the top of the concrete beam; the upper end of the shear anchor bars is connected to the shear anchor plate, and the lower end of the shear anchor bars extends into the interior of the concrete beam.
[0013] According to the above scheme, the shear connection plate has an L-shaped structure, including a connected vertical section and a horizontal section; the vertical section of the shear connection plate is connected to the boot beam, and the horizontal section of the shear connection plate overlaps and connects with the shear anchor plate.
[0014] According to the above scheme, the boot beam includes a top plate, a bottom plate, and multiple stiffening plates;
[0015] The top plate and bottom plate are arranged parallel to each other and directly opposite each other; the bottom of the steel column is connected to the top plate, and the bottom plate is located on the top of the concrete column; multiple stiffening plates are fixed between the top plate and the bottom plate in the transverse and longitudinal directions; the upper end of the embedded part passes through the bottom plate and the top plate of the boot beam in sequence and is connected and fixed with the nut.
[0016] According to the above scheme, the embedded parts are staggered from the stiffening plate.
[0017] According to the above scheme, the shear-resistant connecting plate is an angle steel.
[0018] According to the above scheme, the shear anchor bar has a straight-line structure and is arranged vertically.
[0019] According to the above scheme, the embedded parts are staggered from the steel bars in the concrete column.
[0020] According to the above scheme, the embedded parts are embedded bolts.
[0021] This utility model also employs a building structure, including the novel beam-column shear connection structure described above.
[0022] The beneficial effects of this utility model are as follows: This utility model designs a boot beam at the bottom of the steel column, with the edge of the boot beam extending beyond the outer circumference of the steel column; the boot beam is connected to the concrete column through embedded parts pre-embedded in the lower part of the concrete column, and is connected to the concrete beam on both sides through shear-resistant connection components; compared with the prior art, the connection between the steel column and the concrete column can be achieved without slotting at the top of the concrete column, without damaging the reinforcing steel in the column-beam intersection area, ensuring the integrity and load-bearing capacity of the structure, and solving the problem of difficulty in reserving shear-resistant grooves at the top of the concrete column in the prior art. Attached Figure Description
[0023] Figure 1 This is a structural schematic diagram of a specific embodiment of the present invention.
[0024] Figure 2 This is the front view of this embodiment.
[0025] Figure 3 This is a top view of this embodiment.
[0026] Figure 4 This is a schematic diagram of the connection between the boot beam and the steel column in this embodiment.
[0027] Figure 5 This is an exploded view of the shear connection assembly in this embodiment.
[0028] The components include: 1. Concrete columns; 2. Concrete beams; 3. Steel columns; 4. Boot beams; 4.1. Top slab; 4.2. Bottom slab; 4.3. Stiffening plates; 5. Embedded bolts; 6. Shear anchor plates; 7. Shear anchor bars; 8. Shear connection plates. Detailed Implementation
[0029] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0030] In the description of the embodiments of this application, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and 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. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0031] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.
[0032] In the embodiments of this application, unless otherwise expressly 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," "on top of," and "over" 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.
[0033] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples, without contradiction. Additionally, the term "a plurality of" indicates two or more.
[0034] like Figures 1-3The present invention relates to a novel beam-column shear connection structure, comprising a concrete column 1, a concrete beam 2, a steel column 3, and a shear connection assembly.
[0035] The concrete column 1 is located below, and the top two sides of the concrete column 1 are connected to the concrete beam 2 respectively.
[0036] The lower part of the steel column 3 is fixed with a boot beam 4. Both the boot beam 4 and the steel column 3 are located on the top of the concrete column 1. The boot beam 4 is connected to the upper part of the embedded part, and the lower part of the embedded part is embedded in the concrete column 1.
[0037] The outer side of the boot beam 4 is provided with a shear connection component. The upper end of the shear connection component is connected to the boot beam 4, and the lower end of the shear connection component is embedded in the concrete beam 2.
[0038] In this invention, a boot beam 4 is designed at the bottom of the steel column 3. The horizontal and vertical dimensions of the boot beam 4 are both larger than those of the steel column 3, so that the edge of the boot beam 4 extends beyond the outer circumference of the steel column 3. The edge of the boot beam 4 is connected to the concrete column 1 through several circumferentially arranged embedded parts, and both sides are connected to the concrete beam 2 through shear-resistant connection components. The embedded parts are arranged vertically and are staggered from the reinforcing bars in the concrete column 1; the embedded parts are embedded bolts 5.
[0039] In this invention, the connection between the concrete column 1 and the concrete beam 2, as well as the arrangement of the reinforcing bars within the connection area, are all existing conventional technologies and will not be described in detail here.
[0040] Preferably, such as Figure 5 As shown, the shear connection assembly includes a shear connection plate 8, a shear anchor plate 6, and a shear anchor bar 7;
[0041] The upper end of the shear connection plate 8 is connected to the boot beam 4, and the lower end of the shear connection plate 8 is connected to the shear anchor plate 6. The shear anchor plate 6 is horizontally positioned at the top of the concrete beam 2. The upper end of the shear anchor bar 7 is connected to the shear anchor plate 6, and the lower end of the shear anchor bar 7 extends into the interior of the concrete beam 2.
[0042] Preferably, the shear connecting plate 8 has an L-shaped structure, including a connected vertical section and a horizontal section; the vertical section of the shear connecting plate 8 is connected to the boot beam 4, and the horizontal section of the shear connecting plate 8 overlaps and is connected to the shear anchor plate 6.
[0043] In this utility model, the shear-resistant connecting plate 8 can be an angle steel.
[0044] Preferably, the shear anchor bar 7 has a straight-line structure and is arranged vertically.
[0045] In this invention, the upper surface of the shear anchor plate 6 is flush with the upper surface of the concrete beam 2.
[0046] Preferably, such as Figure 4As shown, the boot beam 4 is a steel structural component; the boot beam 4 includes a top plate 4.1, a bottom plate 4.2, and multiple stiffening plates 4.3;
[0047] The top plate 4.1 and the bottom plate 4.2 are arranged parallel to each other vertically and facing each other. They are respectively connected to the steel column 3 (which may be welded). The bottom plate 4.2 is located on the top of the concrete column 1. Multiple stiffening plates 4.3 are fixed horizontally between the top plate 4.1 and the bottom plate 4.2 (which may be welded). The upper end of the embedded part passes through the bottom plate 4.2 and the top plate 4.1 of the boot beam 4 in sequence and is connected and fixed with nuts.
[0048] In this utility model, the embedded part is staggered from the stiffening plate 4.3; the area of the top plate 4.1 and bottom plate 4.2 of the boot beam 4 both exceed the cross-sectional area of the steel column 3.
[0049] In this utility model, the steel column 3 is an H-beam; the bottom plate 4.2 of the boot beam 4 is welded to the lower end of the steel column 3, and the top plate 4.1 of the boot beam 4 is welded to the lower outer edge of the steel column 3 (welded to the two flange plates and the web plate of the steel column 3 respectively).
[0050] A building structure comprising the novel beam-column shear connection structure as described above.
[0051] Example 1
[0052] like Figures 1-3 The diagram illustrates a novel beam-column shear connection structure, comprising a concrete column 1, a concrete beam 2, a steel column 3, and a shear connection assembly. The concrete column 1 is located below, with its top two sides connected to the concrete beam 2. The steel column 3 has a boot beam 4 at its lower part, with both the boot beam 4 and the steel column 3 positioned at the top of the concrete column 1. The boot beam 4 is connected to the upper part of an embedded part, the lower part of which is embedded within the concrete column 1. The embedded part is a pre-embedded bolt 5. The shear connection assembly is located on the outer side of the boot beam 4, such as... Figure 5 As shown, the shear connection assembly includes a shear connection plate 8, a shear anchor plate 6, and shear anchor bars 7; the shear connection plate 8 has an L-shaped structure, including a connected vertical section and a horizontal section; the vertical section of the shear connection plate 8 is connected to the shoe beam 4, and the horizontal section of the shear connection plate 8 overlaps and connects to the shear anchor plate 6; the shear anchor bars 7 are arranged vertically, with 6 shear anchor bars 7 configured in each shear connection assembly, arranged in groups of 3; as shown Figure 4 As shown, the boot beam 4 includes a top plate 4.1, a bottom plate 4.2, and multiple stiffening plates 4.3; the embedded parts are staggered from the stiffening plates 4.3.
[0053] The construction process in this embodiment is as follows:
[0054] 1. Construction of the top of the concrete column: According to the design drawings, the connection area between concrete beam 2 and concrete column 1 is constructed using conventional methods. Corresponding reinforcing bars are arranged in the connection area, and the positions of the embedded parts are determined.
[0055] 2. Lay out the layout according to the design drawings. Determine the position of the shear connection plate 8 based on the position and dimensions of the bottom plate 4.2 in the boot beam 4, and further determine the positions of the shear anchor plate 6 and the shear anchor bar 7.
[0056] 3. Construction of shear connection components: After the reinforcement of the area where the concrete beam 2 and the concrete column 1 are connected is installed, the insertion position of the shear anchor bar 7 is determined according to the gap between the beam and column reinforcement. Then, according to the relative position where the shear anchor bar 7 can be inserted, holes are drilled at the corresponding positions of the shear anchor plate 6, and the shear anchor bar 7 and the shear anchor plate 6 are connected by drilling and plug welding. The shear anchor bar 7 and the shear anchor plate 6 connected as one unit are inserted into the corresponding positions in the concrete beam 2, and the concrete beam 2 is poured.
[0057] 4. After the concrete beam 2 reaches the predetermined strength, install the steel column 3 and the boot beam 4; the shear connection plate 8 (which can be angle steel) and the shear anchor plate 6 are connected by welding; the other end of the shear connection plate 8 is welded to the side wall of the bottom plate 4.2 of the boot beam 4.
[0058] During the actual construction process, there is a gap between the top of the concrete column 1 and the bottom plate 4.2 of the boot beam 4. Secondary grouting is performed in the gap to form a secondary grouting layer.
[0059] Example 2
[0060] This embodiment relates to a building structure, including a novel beam-column shear connection structure as described in Embodiment 1.
[0061] The contents not described in detail in this specification are existing technologies known to those skilled in the art.
[0062] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A novel beam-column shear connection structure, characterized in that, This includes concrete columns, concrete beams, steel columns, and shear connection components; The concrete column is located below, and its top two sides are connected to the concrete beams respectively. The lower part of the steel column is fixed with a boot beam, the boot beam and the steel column are set on the top of the concrete column, the boot beam is connected to the upper part of the embedded part, and the lower part of the embedded part is embedded in the concrete column. The outer side of the boot beam is provided with a shear connection component. The upper end of the shear connection component is connected to the boot beam, and the lower end of the shear connection component is embedded in the concrete beam.
2. The novel beam-column shear connection structure according to claim 1, characterized in that, The shear connection assembly includes a shear connection plate, a shear anchor plate, and shear anchor bars; the upper end of the shear connection plate is connected to the boot beam, the lower end of the shear connection plate is connected to the shear anchor plate, and the shear anchor plate is horizontally positioned at the top of the concrete beam; the upper end of the shear anchor bars is connected to the shear anchor plate, and the lower end of the shear anchor bars extends into the interior of the concrete beam.
3. The novel beam-column shear connection structure according to claim 2, characterized in that, The shear connection plate has an L-shaped structure, including a connected vertical section and a horizontal section; the vertical section of the shear connection plate is connected to the boot beam, and the horizontal section of the shear connection plate overlaps and connects with the shear anchor plate.
4. The novel beam-column shear connection structure according to claim 1, characterized in that, The boot beam includes a top plate, a bottom plate, and multiple stiffening plates; The top plate and bottom plate are arranged parallel to each other and directly opposite each other; the bottom of the steel column is connected to the top plate, and the bottom plate is located on the top of the concrete column; multiple stiffening plates are fixed between the top plate and the bottom plate in the transverse and longitudinal directions; the upper end of the embedded part passes through the bottom plate and the top plate of the boot beam in sequence and is connected and fixed with the nut.
5. The novel beam-column shear connection structure according to claim 4, characterized in that, The embedded part is offset from the stiffening plate.
6. The novel beam-column shear connection structure according to claim 3, characterized in that, The shear-resistant connecting plate is an angle steel.
7. The novel beam-column shear connection structure according to claim 2, characterized in that, The shear anchor bars are of a straight-line structure and are arranged vertically.
8. The novel beam-column shear connection structure according to claim 1, characterized in that, The embedded parts are staggered from the steel bars in the concrete column.
9. The novel beam-column shear connection structure according to claim 1, characterized in that, The embedded parts are embedded bolts.
10. A building structure, characterized in that, Including the novel beam-column shear connection structure as described in any one of claims 1 to 9.