Building stand column steel bar connecting structure
By using the limiting edge and threaded connection of the grouting cylinder and connecting cylinder, the steel bars are coaxially fixed, and the connection is stabilized by concrete mortar, which solves the problem of misalignment of steel bar joints and improves the load-bearing capacity of building columns.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-03-03
AI Technical Summary
When steel bars are joined together in building columns, misalignment can easily occur, affecting welding quality and load-bearing capacity.
The structure employs a grouting cylinder and a connecting cylinder, achieving coaxial fixation of the reinforcing bars through limiting edges and threaded connections, and using grouting holes to inject concrete mortar for stable connection.
This effectively solved the problem of misalignment of steel bars during splicing, ensuring the load-bearing capacity of the steel bars and building columns.
Smart Images
Figure CN223964084U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of coaxial connection technology of building steel bars, and specifically to a steel bar connection structure for building columns. Background Technology
[0002] Concrete structures offer advantages such as long service life, simple construction, short construction period, customizable interior design, good thermal insulation, good air permeability, and earthquake resistance. Building columns are common components in concrete structures, consisting of a cast-in-place concrete column and an internal steel reinforcement cage extending along its length. The reinforcement cage is made of welded steel bars. When the building column is long, the steel bars in the cage may need to be joined coaxially. Currently, welding is commonly used to connect the steel bars. However, due to the weight and length of the steel bars, misalignment between two bars can easily occur during welding. Whether it's radial offset or an angle between them, it will affect the load-bearing capacity of the welded steel bars, and consequently, the load-bearing capacity of the building column. Utility Model Content
[0003] The purpose of this utility model is to provide a steel bar connection structure for building columns, which can solve the problem of misalignment of steel bar connections.
[0004] This utility model is achieved through the following technical solution:
[0005] A steel reinforcement connection structure for building columns includes a grouting cylinder with an open end and a closed end at its two ends. The inner wall of the open end is recessed with internal threads, and the closed end has a first steel reinforcement hole coaxially formed therein for coaxially inserting a first steel reinforcement. A connecting cylinder has two ends for coaxially inserting a first steel reinforcement and a second steel reinforcement, respectively. The connecting cylinder is welded to the first steel reinforcement, and the side wall of the connecting cylinder extends outward to form a limiting edge. The outer diameter of the limiting edge matches the inner diameter of the grouting cylinder. A grouting disc has external threads protruding from its side wall to allow for a tight screw-on connection with the open end. A second steel reinforcement hole coaxially forms the grouting hole for coaxially inserting and welding a second steel reinforcement. The grouting disc has a plurality of grouting holes extending through it along its thickness direction.
[0006] Optionally, the sidewall of the connecting cylinder is provided with a plurality of through holes in a radial direction, so that the interior of the grouting cylinder and the interior of the connecting cylinder are connected through the through holes.
[0007] Optionally, the sidewall of the connecting cylinder is grid-shaped to form a plurality of the through holes.
[0008] Optionally, the outer wall of the limiting edge extends along the thickness direction to form a thickened wall, and the outer wall of the thickened wall is tightly fitted with the inner wall of the grouting cylinder.
[0009] Optionally, the inner sidewall of the thickened wall is provided with a plurality of reinforcing ribs protruding radially. The reinforcing ribs are in the shape of right-angled triangular plates, and the two right-angled sides of the reinforcing ribs are fixedly connected to the inner sidewall of the thickened wall and the limiting edge, respectively.
[0010] Optionally, the diameter of the first reinforcing bar hole is larger than the diameter of the first reinforcing bar; the inner wall of the grouting cylinder is provided with a multi-lobed clamping contact protruding inward, the clamping contact being elastically or plastically connected to the grouting cylinder, all the clamping contacts being arranged in a ring at intervals, the side of the clamping contact facing the open end being set as an inclined surface, and the inclined surface gradually increasing inward.
[0011] Optionally, the limiting edge is conical in shape to cooperate with the clamping contact, and the slope of the limiting edge is less than or equal to the slope of the top surface of the clamping contact.
[0012] Optionally, the inner end of the clamping contact is provided with a clamping plate, and the side of the clamping plate away from the clamping contact is recessed into an arc-shaped cylindrical surface. The clamping plate is used to hold the side wall of the first reinforcing bar.
[0013] Optionally, the clamping contact is in the shape of an arc panel, and the axial length of the projection of the clamping plate and the first reinforcing bar is much greater than the thickness of the clamping contact.
[0014] Optionally, the connection between the clamping contact and the grouting cylinder is located near the closed end; the inner wall of the closed end is provided with a limiting ring platform, which can abut against the clamping plate.
[0015] Compared with the prior art, this utility model has the following advantages and beneficial effects:
[0016] This utility model provides a steel reinforcement connection structure for building columns. It includes a grouting cylinder with an open end and a closed end. A first steel reinforcement hole is coaxially formed at the closed end, and a connecting cylinder is installed. One end of the connecting cylinder is coaxially welded to the end of the first steel reinforcement. The other end of the first steel reinforcement is then inserted into the grouting cylinder from the open end, exiting through the first steel reinforcement hole until the connecting cylinder abuts against the inner wall of the closed end, thus fixing the first steel reinforcement. A limiting edge is provided, with its outer diameter matching the inner diameter of the grouting cylinder, to limit the insertion process and position of the first steel reinforcement, allowing it to smoothly pass through the first steel reinforcement hole. A grouting plate is also provided, with a second steel reinforcement hole coaxially formed in its center. The second steel reinforcement is coaxially welded to the grouting plate, and a grouting... The grouting disc is coaxially threaded to the open end. Using the thread, the grouting disc is gradually screwed into the grouting cylinder from the open end until the second reinforcing bar is inserted into the connecting cylinder and abuts against the first reinforcing bar. This allows the grouting disc to radially and axially fix the second reinforcing bar, and the second reinforcing bar to axially fix the first reinforcing bar. The first reinforcing bar also axially fixes the limiting edge, thus stabilizing the entire structure. Then, concrete mortar is injected through the grouting holes in the grouting disc, filling the grouting cylinder and allowing it to dry. This completes the coaxial connection of the first and second reinforcing bars. Through the coordination of these features, this building column reinforcing bar connection structure effectively solves the problem of misaligned reinforcing bar connections, thus effectively ensuring the load-bearing capacity of the connected reinforcing bars and consequently guaranteeing the load-bearing capacity of the building column. Attached Figure Description
[0017] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:
[0018] Figure 1 A half-sectional view of the completed connection of the steel reinforcement connection structure for building columns provided in this embodiment of the utility model;
[0019] Figure 2 and Figure 3 This is a schematic diagram illustrating the installation process of the steel reinforcement connection structure for building columns provided in an embodiment of the present utility model.
[0020] Figure 4 A top view of the grouting plate for the steel reinforcement connection structure of the building column provided in this embodiment of the utility model;
[0021] Figure 5 A top view of the connecting cylinder of the steel reinforcement connection structure for building columns provided in this embodiment of the utility model;
[0022] Figure 6 This is a top view of the clamping contact of the steel reinforcement connection structure for building columns provided in an embodiment of the present utility model.
[0023] The attached diagram shows the markings and corresponding component names:
[0024] 10-Grouting cylinder; 11-First reinforcing bar hole; 12-Clamping contact; 121-Clamping plate; 13-Limiting ring platform; 20-Connecting cylinder; 21-Limiting edge; 211-Thickened wall; 212-Strengthening plate reinforcement; 30-Grouting plate; 31-Second reinforcing bar hole; 32-Grouting hole. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.
[0026] Example
[0027] Please refer to Figures 1 to 6 This embodiment provides a steel reinforcement connection structure for building columns, including a grouting cylinder 10, with an open end and a closed end at both ends. The inner wall of the open end is recessed with an internal thread, and the closed end has a first steel reinforcement hole 11 coaxially formed, which is used to coaxially insert a first steel reinforcement. The second part includes a connecting cylinder 20, with both ends used to coaxially insert a first steel reinforcement and a second steel reinforcement, respectively. The connecting cylinder 20 is welded to the first steel reinforcement, and the side wall of the connecting cylinder 20 extends outward to form a limiting edge 21, the outer diameter of which matches the inner diameter of the grouting cylinder 10. The third part includes a grouting disc 30, with an external thread protruding from the side wall of the grouting disc 30 to allow for a sealed screw connection with the open end. The grouting hole 30 has a second steel reinforcement hole 31 coaxially formed, which is used to coaxially insert a second steel reinforcement and is welded to it. The grouting disc 30 has a plurality of grouting holes 32 extending through it along its thickness direction.
[0028] The steel reinforcement connection structure for building columns provided in this embodiment includes a grouting cylinder 10 with an open end and a closed end. A first steel reinforcement hole 11 is coaxially formed at the closed end. A connecting cylinder 20 is then provided, with one end of the connecting cylinder 20 coaxially welded to the end of the first steel reinforcement. The other end of the first steel reinforcement is then inserted into the grouting cylinder 10 from the open end, exiting through the first steel reinforcement hole 11 until the connecting cylinder 20 abuts against the inner wall of the closed end, thus fixing the first steel reinforcement. A limiting edge 21 is provided, with its outer diameter matching the inner diameter of the grouting cylinder 10. The limiting edge 21 limits the insertion process and position of the first steel reinforcement, allowing it to smoothly pass through the first steel reinforcement hole 11. A grouting plate 30 is provided, with a second steel reinforcement hole 31 coaxially formed in its middle. The second steel reinforcement is coaxially welded to the grouting plate 30. The grouting disc 30 is coaxially threaded to the open end. Using the thread, the grouting disc 30 is gradually screwed into the grouting cylinder 10 from the open end until the second reinforcing bar is inserted into the connecting cylinder 20 and abuts against the first reinforcing bar. This allows the grouting disc 30 to radially and axially fix the second reinforcing bar, and the second reinforcing bar to axially fix the first reinforcing bar. The first reinforcing bar is also used to axially fix the limiting line 21, thus stabilizing the entire structure. Then, concrete mortar is injected through the grouting hole 32 in the grouting disc 30, filling the grouting cylinder 10 and allowing it to dry, thus completing the coaxial connection of the first and second reinforcing bars. Through the cooperation of these features, this building column reinforcing bar connection structure effectively solves the problem of misaligned reinforcing bar connections, thereby effectively ensuring the load-bearing capacity of the connected reinforcing bars and consequently guaranteeing the load-bearing capacity of the building column.
[0029] To further enhance the connection strength between the first and second reinforcing bars, the side wall of the connecting cylinder 20 is provided with multiple through holes in the radial direction, so that the interior of the grouting cylinder 10 and the interior of the connecting cylinder 20 are connected through the through holes.
[0030] By setting through holes, the concrete mortar injected into the grouting cylinder can also be injected through the through holes and bonded to the connection between the first and second reinforcing bars. This allows the second reinforcing bar to be bonded to the connecting cylinder 20 through concrete, thereby further improving the connection strength between the first and second reinforcing bars.
[0031] Preferably, the sidewall of the connecting cylinder 20 is grid-shaped to form a plurality of the through holes.
[0032] The grid-like through holes can better increase the contact area and connection area between cement mortar and steel bars, thereby better fixing the second steel bar to the connecting cylinder 20.
[0033] To further prevent unnecessary shaking when the first reinforcing bar is inserted, the outer wall of the limiting line 21 extends along the thickness direction to form a thickened wall 211, and the outer wall of the thickened wall 211 is tightly fitted with the inner wall of the grouting cylinder 10.
[0034] By setting the thickened wall 211, the thickness of the edge of the limiting edge 21 is further increased, thereby improving the stability when sliding with the grouting cylinder 10; at the same time, the thickened wall 211 forms a cement mortar bearing edge to prevent cement mortar from flowing in from the edge of the limiting edge 21, and the weight of the cement mortar can also press down on the limiting edge 21, so that the limiting edge 21 and the closed end of the grouting cylinder 10 are tightly abutted.
[0035] To improve the structural performance at the connection between the thickened wall 211 and the limiting edge 21, multiple reinforcing ribs 212 are radially protruding from the inner sidewall of the thickened wall 211. The reinforcing ribs 212 are in the shape of right-angled triangular plates, and the two right-angled sides of the reinforcing ribs 212 are fixedly connected to the inner sidewall of the thickened wall 211 and the limiting edge 21, respectively.
[0036] To accommodate steel bars of various diameters, the diameter of the first steel bar hole 11 is larger than the diameter of the first steel bar; the inner wall of the grouting cylinder 10 is provided with a multi-lobed clamping contact 12 protruding inward, the clamping contact 12 is elastically or plastically connected to the grouting cylinder 10, all the clamping contacts 12 are arranged in a ring at intervals, and the side of the clamping contact 12 facing the open end is set as an inclined surface, and the inclined surface gradually increases in the inward direction.
[0037] With the above setup, when the first reinforcing bar is inserted into the first reinforcing bar hole 11, the downward pressure of the grouting plate 30 screwed on will press down the second reinforcing bar, then press down the first reinforcing bar, then press down the connecting cylinder 20, then press down the limiting edge 21, and then press down the clamping contact 12 using the limiting edge 21. This will cause the clamping contact 12 to undergo elastic or plastic deformation. Since the top surface of the clamping contact 12 is a slope, the clamping contact 12 that undergoes elastic or plastic deformation will be squeezed inward until it abuts and squeezes against the side wall of the first reinforcing bar, so as to radially fix and limit the first reinforcing bar.
[0038] Preferably, the limiting edge 21 is conical in shape to cooperate with the clamping contact 12, and the slope of the limiting edge 21 is less than or equal to the slope of the top surface of the clamping contact 12.
[0039] With the above settings, the cone-shaped contact 12 is more effectively clamped and squeezed, which is more conducive to its elastic or plastic deformation.
[0040] In order to increase the clamping area and clamping effect between the clamping contact 12 and the first reinforcing bar, the inner end of the clamping contact 12 is provided with a clamping plate 121. The side of the clamping plate 121 away from the clamping contact 12 is recessed into an arc cylindrical surface. The clamping plate 121 is used to hold the side wall of the first reinforcing bar.
[0041] To facilitate elastic or plastic deformation of the clamping contact 12, the clamping contact 12 is in the shape of an arc panel, and the axial length of the projection of the clamping plate 121 and the first reinforcing bar is much greater than the thickness of the clamping contact 12.
[0042] To prevent excessive deformation of the clamping contact 12, the connection between the clamping contact 12 and the grouting cylinder 10 is located near the closed end; the inner wall of the closed end is provided with a limiting ring platform 13, which can abut against the clamping plate 121.
[0043] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. A steel reinforcement connection structure for building columns, characterized in that, The utility model relates to a grouting device for reinforced concrete, which comprises a grouting barrel (10) with an open end and a closed end, an inner wall of the open end is concave with internal thread, the closed end coaxially opens first steel bar hole (11), the first steel bar hole (11) is used for coaxial wear first steel bar, a connecting barrel (20) is used for coaxial insertion first steel bar and second steel bar respectively at both ends of the connecting barrel (20), the connecting barrel (20) is welded with first steel bar, the lateral wall of the connecting barrel (20) extends outward and forms limiting edge (21), the outer diameter of limiting edge (21) matches with the inner diameter of the grouting barrel (10), a grouting disc (30) is provided with external thread on the lateral wall, so that the grouting disc (30) can be tightly screwed with the open end, the grouting disc (30) coaxially opens second steel bar hole (31), the second steel bar hole (31) is used for coaxial wear second steel bar and is welded with second steel bar, the grouting disc (30) penetrates along the thickness direction and opens a plurality of grouting holes (32). The lateral wall of the connecting barrel (20) penetrates along the radial direction and opens a plurality of through holes, so that the inside of the grouting barrel (10) is communicated with the inside of the connecting barrel (20) through the through holes. The lateral wall of the connecting barrel (20) is in a grid shape to form a plurality of through holes. The outer wall of the limiting edge (21) extends along the thickness direction and forms a thickened wall (211), the outer side wall of the thickened wall (211) is closely matched with the inner side wall of the grouting barrel (10).
2. The building column reinforcing connection structure according to claim 1, wherein The inner side wall of the thickened wall (211) is convex with a plurality of reinforcing plate ribs (212) along the radial direction, the reinforcing plate rib (212) is in a right triangle plate shape, two right angle edges of the reinforcing plate rib (212) are fixedly connected with the inner side wall of the thickened wall (211) and the limiting edge (21) respectively.
3. The building column reinforcement connection structure according to claim 2, wherein The diameter of the first steel bar hole (11) is greater than the diameter of the first steel bar.
4. The building column reinforcement connection structure according to claim 1, wherein The inner wall of the grouting barrel (10) is convex with a plurality of petal clamping fingers (12) inwardly, the clamping finger (12) is elastically or plastically connected with the grouting barrel (10), all the clamping fingers (12) are arranged in a ring shape at intervals, one side of the clamping finger (12) towards the open end is provided as an inclined surface, and the inclined surface gradually increases in the inward direction.
5. The building column reinforcement connection structure according to claim 4, wherein The limiting edge (21) is in a conical shape matched with the clamping finger (12), the slope of the limiting edge (21) is less than the slope of the top surface of the clamping finger (12).
6. The architectural column steel reinforcement connection structure of claim 1, wherein The inner end of the clamping finger (12) is provided with a clamping plate (121), one side of the clamping plate (121) away from the clamping finger (12) is concave as a circular arc cylindrical surface, the clamping plate (121) is used for embracing the side wall of the first steel bar. The clamping finger (12) is in an arc surface plate shape, the axial length of the projection of the clamping plate (121) and the first steel bar is much greater than the thickness of the clamping finger (12).
7. The building column reinforcement connection structure according to claim 6, wherein The connecting part of the clamping finger (12) and the grouting barrel (10) is arranged close to the closed end.
8. The building column reinforcing connection structure according to claim 7, wherein The inner wall of the closed end is convex with a limiting ring table (13), the limiting ring table (13) can abut against the clamping plate (121).
9. The building column reinforcement connection structure according to claim 8, wherein 10. The building column reinforcement connection structure according to claim 9, wherein