Anchoring joint of frame concrete column reinforcing steel bar
By setting up column steel frames and planting rib layers on the outside of the frame concrete column, welding of the longitudinal ribs with the original concrete columns is solved, and the earthquake resistance and compressive strength are improved.
Patent Information
- Application Number
- CN202421902835.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-07
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-08-07
AI Technical Summary
When strengthening frame concrete columns, it is difficult for the prior art to effectively anchor new steel bars, and welding of longitudinal bars between the longitudinal bars and the original concrete columns can easily make the longitudinal bars brittle, reducing earthquake resistance and compressive strength.
Design an anchoring node for frame concrete column steel bars. By setting column steel frames and column cap steel frames on the outside of the original concrete column and installing a planting layer on the outside of the original concrete column, avoiding welding of the longitudinal bars with the original concrete columns, and using a ma-shaped connecting piece and stirrups to ensure the firmness and compressive strength of the anchoring.
It effectively avoids the brittleness of longitudinal ribs, enhances the earthquake resistance, and improves the compressive strength and service life of the original concrete column.
Smart Images
Figure CN222879295U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of engineering construction, in particular to an anchoring node of a frame concrete column reinforcement. Background Art
[0002] Reinforced concrete structure is one of the main building structures of modern buildings. In the subsequent use of the building, there are situations where the strength of the concrete columns and beams decreases, or it needs to continue to be used after reaching the design life, or it needs to be expanded or changed in use, or potential hidden dangers are found in daily use. If it is demolished and rebuilt, some buildings are not suitable from the perspective of economy and humanities. If it needs to continue to be used, the original structure is usually reinforced to meet the subsequent use requirements.
[0003] In view of the above situation, structural engineers will take corresponding reinforcement measures for the structure according to the actual situation of the structure, as well as the results of safety and earthquake resistance appraisal. For the problem of insufficient strength of frame concrete columns, the usual reinforcement scheme is to increase the section, enclose steel or replace concrete. For the method of increasing the section, since the beam reinforcement is very dense, it is more difficult to anchor the newly added column reinforcement of the beam structure. If the newly added reinforcement is overlapped with the original column reinforcement as an anchor, the plane position spacing between the new and old reinforcements is large, and additional reinforcement welding connection is required; according to Articles 6.3.6 and 6.4.5 of the "Technical Code for Concrete Structures of High-rise Buildings" JGJ3-2010, the longitudinal reinforcement of frame beams and columns should not be welded with stirrups, tension bars and embedded parts. When welding the longitudinal reinforcement of beams and columns, it is easy to make the longitudinal reinforcement brittle, reduce the compressive strength, and be unfavorable for earthquake resistance. Utility Model Content
[0004] The utility model provides an anchoring node for steel bars of a frame concrete column, which effectively avoids welding of longitudinal bars with the longitudinal bars of the original concrete column, avoids brittleness of the longitudinal bars of the original concrete column, enhances earthquake resistance, and improves the compressive strength and service life of the original concrete column.
[0005] The above-mentioned purpose of the utility model is achieved through the following technical solutions:
[0006] An anchor node for steel bars of a frame concrete column comprises an original concrete column on a foundation, wherein the cross section of the original concrete column is rectangular, a column cap is fixedly connected to the top of the original concrete column, and the column cap is in a bucket shape with a larger top and a smaller bottom. A column steel skeleton is arranged on the outside of the original concrete column, and the column steel skeleton comprises column angle steels respectively wrapped at the four corners of the original concrete column, and a plurality of vertical vertical steel bars and a plurality of horizontal horizontal steel bars are arranged between two adjacent column angle steels, and the two ends of the horizontal steel bars are respectively welded and fixedly connected to the two adjacent column angle steels, and the vertical steel bars are connected to the corresponding The horizontal steel bars are welded and fixedly connected; a column cap steel frame is provided on the outer side of the column cap, and the column cap steel frame includes column cap angle steels respectively wrapped at the four corners of the column cap, and a plurality of horizontal horizontal steel strips and a longitudinal steel strip perpendicular to the horizontal steel strips are provided between two adjacent column cap angle steels, and the two ends of the horizontal steel strips are respectively welded and fixedly connected to the two adjacent column cap angle steels, and the longitudinal steel strips are welded and fixedly connected to the corresponding horizontal steel strips; a reinforcement layer is provided on the outer side of the column steel frame, and the reinforcement layer includes vertical longitudinal bars arranged along the circumference of the column steel frame, and transverse stirrups are connected between the plurality of longitudinal bars.
[0007] The above-mentioned anchor node of the frame concrete column steel bar, wherein the longitudinal bars include corner longitudinal bars and lateral longitudinal bars, the corner longitudinal bars include four and are respectively located on the diagonals of the original concrete column, and the lateral longitudinal bars include multiple and are respectively located in the plane where two adjacent corner longitudinal bars are located.
[0008] The above-mentioned anchor node of the frame concrete column reinforcement, wherein a Y-shaped connector is provided between the corner longitudinal reinforcement and the corresponding column angle steel, one end of the Y-shaped connector is welded and fixedly connected to the corner longitudinal reinforcement, and the other end of the Y-shaped connector is welded and fixedly connected to the corresponding column angle steel.
[0009] The above-mentioned anchor node of the frame concrete column reinforcement, wherein a Y-shaped connector is provided between the lateral longitudinal reinforcement and the corresponding longitudinal steel strip, one end of the Y-shaped connector is welded and fixedly connected to the lateral longitudinal reinforcement, and the other end of the Y-shaped connector is welded and fixedly connected to the corresponding longitudinal steel strip.
[0010] The above-mentioned anchor node of the frame concrete column reinforcement, wherein the top end of the corner longitudinal reinforcement is welded and fixedly connected to the corresponding column cap angle steel, and the bottom end of the corner longitudinal reinforcement extends to the foundation.
[0011] The above-mentioned anchor node of the frame concrete column reinforcement, wherein the top end of the lateral longitudinal reinforcement is welded and fixedly connected to the corresponding longitudinal steel strip and / or transverse steel strip, and the bottom end of the lateral longitudinal reinforcement extends to the foundation.
[0012] The above-mentioned anchor node of the frame concrete column steel bar, wherein the stirrups are in a closed ring shape and surround the outside of the longitudinal bars, and the stirrups are respectively tied and connected with the corner longitudinal bars and the side longitudinal bars by steel wires.
[0013] The above-mentioned anchor node of the frame concrete column steel bar, wherein the stirrups include a plurality of stirrups, and the plurality of stirrups are spaced apart and distributed along the length direction of the longitudinal reinforcement.
[0014] The above-mentioned anchor node of the frame concrete column reinforcement, wherein the column cap angle steel is welded and fixedly connected to the corresponding column angle steel, and the vertical steel bar is welded and fixedly connected to the corresponding longitudinal steel belt.
[0015] The above-mentioned anchoring node of the frame concrete column reinforcement, wherein the plurality of vertical steel bars are distributed at intervals along the horizontal direction between two adjacent column angle steels, and the plurality of horizontal transverse steel bars are distributed at intervals along the vertical direction of the column angle steels.
[0016] In summary, the beneficial technical effects of the utility model are:
[0017] The utility model arranges a column steel frame on the outside of the original concrete column, arranges a column cap steel frame on the outside of the original column cap, and arranges a reinforcement layer on the outside of the column steel frame, which can effectively avoid welding of longitudinal reinforcement with the longitudinal reinforcement of the original concrete column, avoid brittleness of the longitudinal reinforcement of the original concrete column, enhance earthquake resistance, and improve the compressive strength and service life of the original concrete column. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the column steel skeleton structure of the original concrete column;
[0019] Figure 2 It is a schematic diagram of the column steel skeleton of the original concrete column and the column cap steel skeleton structure of the column cap;
[0020] Figure 3 It is a structural diagram of the column steel skeleton of the original concrete column, the column cap steel skeleton of the column cap and the reinforcing bar layer;
[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of the concrete column after pouring.
[0022] As shown in the figure, 1. original concrete column; 2. column cap; 3. column steel frame; 31. column angle steel; 32. vertical steel bar; 33. horizontal steel bar; 4. column cap steel frame; 41. column cap angle steel; 42. horizontal steel strip; 43. longitudinal steel strip; 5. embedded reinforcement layer; 51. longitudinal reinforcement; 511. corner longitudinal reinforcement; 512. side longitudinal reinforcement; 52. stirrups; 53. Y-shaped connector. DETAILED DESCRIPTION
[0023] The following is combined with Figure 1-4 The utility model is described in further detail.
[0024] like Figure 1-4As shown, an anchor node of a frame concrete column reinforcement includes an original concrete column 1 on a foundation, the cross section of the original concrete column 1 is a rectangle, the original concrete column 1 is cast by longitudinal and transverse longitudinal reinforcements, the top of the original concrete column 1 is fixedly connected to a column cap 2, the column cap 2 is in a bucket shape with a larger top and a smaller bottom, a column steel skeleton 3 is arranged on the outside of the original concrete column 1, the column steel skeleton 3 includes column angle steels 31 respectively wrapped at the four corners of the original concrete column 1, a plurality of vertical steel bars 32 and a plurality of horizontal transverse steel bars 33 are arranged between two adjacent column angle steels 31, and the two ends of the transverse steel bar 33 are respectively welded and fixedly connected to the two adjacent column angle steels 31, The vertical steel bars 32 are welded and fixedly connected to the corresponding transverse steel bars 33; a column cap steel frame 4 is provided on the outside of the column cap 2, and the column cap steel frame 4 includes column cap angle steels 41 respectively wrapped around the four corners of the column cap 2, and a plurality of horizontal transverse steel strips 42 and a longitudinal steel strip 43 perpendicular to the transverse steel strips 42 are provided between two adjacent column cap angle steels 41, and the two ends of the transverse steel strip 42 are respectively welded and fixedly connected to the two adjacent column cap angle steels 41, and the longitudinal steel strip 43 is welded and fixedly connected to the corresponding transverse steel strip 42; a reinforcement layer 5 is provided on the outside of the column steel frame 3, and the reinforcement layer 5 includes vertical longitudinal bars 51 arranged along the circumference of the column steel frame 3, and transverse stirrups 52 are connected between the plurality of longitudinal bars 51.
[0025] like Figure 3 , 4 As shown, the longitudinal reinforcement 51 of this embodiment includes corner longitudinal reinforcement 511 and lateral longitudinal reinforcement 512. The corner longitudinal reinforcement 511 includes four and is respectively located on the diagonal lines of the original concrete column 1. The lateral longitudinal reinforcement 512 includes multiple and is respectively located in the plane where two adjacent corner longitudinal reinforcements 511 are located. The multiple lateral longitudinal reinforcements 512 are distributed at intervals between two adjacent corner longitudinal reinforcements 511.
[0026] like Figure 3 As shown, in order to improve the accuracy of the position of the reinforcement layer 5 and ensure the effective cross-section of the concrete column after pouring, a Y-shaped connector 53 is provided between the corner longitudinal reinforcement 511 and the corresponding column angle steel 31. One end of the Y-shaped connector 53 is welded and fixedly connected to the corner longitudinal reinforcement 511, and the other end of the Y-shaped connector 53 is welded and fixedly connected to the corresponding column angle steel 31. Multiple Y-shaped connectors 53 can be arranged at intervals along the longitudinal direction.
[0027] In order to improve the accuracy of the position of the reinforcement layer 5 and ensure the effective cross-section of the concrete column after pouring, a Y-shaped connector 53 is provided between the lateral longitudinal reinforcement 512 and the corresponding longitudinal steel belt 43. One end of the Y-shaped connector 53 is welded and fixedly connected to the lateral longitudinal reinforcement 512, and the other end of the Y-shaped connector 53 is welded and fixedly connected to the corresponding longitudinal steel belt 43. Multiple Y-shaped connectors 53 can be arranged at intervals along the longitudinal direction.
[0028] like Figure 3 As shown, in one embodiment, the top end of the corner longitudinal reinforcement 511 is welded and fixedly connected to the corresponding column cap angle steel 41, and the bottom end of the corner longitudinal reinforcement 511 extends to the foundation.
[0029] The top end of the lateral longitudinal reinforcement 512 is welded and fixed to the corresponding longitudinal steel strip 43 and / or transverse steel strip 42, and the bottom end of the lateral longitudinal reinforcement 512 extends to the foundation.
[0030] The stirrups 52 are in a closed ring shape and surround the outer side of the longitudinal reinforcement 51. The stirrups 52 are respectively tied and connected with the corner longitudinal reinforcement 511 and the side longitudinal reinforcement 512 through steel wires.
[0031] In order to improve the positioning accuracy and stability of the embedded reinforcement layer 5 , the stirrups 52 include a plurality of stirrups 52 , and the plurality of stirrups 52 are distributed at intervals along the length direction of the longitudinal reinforcement 51 .
[0032] In one embodiment, the column cap angle steel 41 is welded and fixedly connected to the corresponding column angle steel 31, and the vertical steel bar 32 is welded and fixedly connected to the corresponding longitudinal steel strip 43. This structure improves the firmness of the connection between the column steel frame 3 and the column cap steel frame 4.
[0033] In this embodiment, a plurality of vertical steel bars 32 are distributed at intervals along the horizontal direction between two adjacent column angle steels 31 , and a plurality of horizontal transverse steel bars 33 are distributed at intervals along the vertical direction of the column angle steels 31 .
[0034] The specific implementation steps of the utility model are as follows:
[0035] First, the original structure is unloaded, the original concrete column 1 and column cap 2 are chiseled and cleaned and the interface agent is applied, the column steel frame 3 is installed on the outside of the original concrete column 1 to form a lattice steel column, the column cap steel frame 4 is installed on the outside of the column cap 2, the reinforcement layer 5 is installed on the outside of the column steel frame 3, the Y-shaped connector 53 is welded between the corner longitudinal reinforcement 511 and the corresponding column angle steel 31, and then a casting template is set on the outside of the reinforcement layer 5 and the column cap steel frame 4, and concrete is poured in the casting template. The stirrups 52 and the longitudinal reinforcement 51 are tied with steel wire. This structure avoids the problem of the longitudinal reinforcement of the original concrete column 1 becoming brittle due to the welding of the longitudinal reinforcement 51 with the longitudinal reinforcement of the original concrete column 1, and improves the compressive strength and service life of the original concrete column 1.
[0036] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. An anchor node for steel bars of a frame concrete column, comprising an existing concrete column on a foundation, wherein the cross section of the existing concrete column is rectangular, the top of the existing concrete column is fixedly connected to a column cap, and the column cap is in a bucket shape with a larger top and a smaller bottom, characterized in that: A column steel frame is provided on the outside of the original concrete column, and the column steel frame includes column angle steels respectively wrapped at the four corners of the original concrete column, and a plurality of vertical steel bars and a plurality of horizontal transverse steel bars are provided between two adjacent column angle steels, and the two ends of the transverse steel bars are respectively welded and fixedly connected with the two adjacent column angle steels, and the vertical steel bars are welded and fixedly connected with the corresponding transverse steel bars; a column cap steel frame is provided on the outside of the column cap, and the column cap steel frame includes column cap angle steels respectively wrapped at the four corners of the column cap, and a plurality of horizontal transverse steel strips and a longitudinal steel strip perpendicular to the transverse steel strips are provided between the two adjacent column cap angle steels, and the two ends of the transverse steel strips are respectively welded and fixedly connected with the two adjacent column cap angle steels, and the longitudinal steel strips are welded and fixedly connected with the corresponding transverse steel strips; a reinforcement layer is provided on the outside of the column steel frame, and the reinforcement layer includes vertical longitudinal bars arranged along the circumference of the column steel frame, and transverse stirrups are connected between the plurality of longitudinal bars.
2. The anchor node of the frame concrete column reinforcement according to claim 1 is characterized in that: The longitudinal reinforcements include corner longitudinal reinforcements and side longitudinal reinforcements. The corner longitudinal reinforcements include four and are respectively located on the diagonals of the original concrete columns. The side longitudinal reinforcements include multiple and are respectively located in the planes where two adjacent corner longitudinal reinforcements are located.
3. The anchor node of the frame concrete column reinforcement according to claim 2 is characterized in that: A Y-shaped connector is provided between the corner longitudinal reinforcement and the corresponding column angle steel, one end of the Y-shaped connector is welded and fixedly connected to the corner longitudinal reinforcement, and the other end of the Y-shaped connector is welded and fixedly connected to the corresponding column angle steel.
4. The anchor node of the frame concrete column reinforcement according to claim 2 is characterized in that: A Y-shaped connector is provided between the side longitudinal reinforcement and the corresponding longitudinal steel strip, one end of the Y-shaped connector is welded and fixedly connected to the side longitudinal reinforcement, and the other end of the Y-shaped connector is welded and fixedly connected to the corresponding longitudinal steel strip.
5. The anchor node of the frame concrete column reinforcement according to claim 2, characterized in that: The top end of the corner longitudinal reinforcement is welded and fixed to the corresponding column cap angle steel, and the bottom end of the corner longitudinal reinforcement extends to the foundation.
6. The anchor node of the frame concrete column reinforcement according to claim 2, characterized in that: The top ends of the side longitudinal bars are welded and fixedly connected to the corresponding longitudinal steel strips and / or transverse steel strips, and the bottom ends of the side longitudinal bars extend to the foundation.
7. The anchor node of the frame concrete column reinforcement according to claim 1, characterized in that: The stirrups are in a closed ring shape and surround the outside of the longitudinal reinforcement. The stirrups are tied and connected with the corner longitudinal reinforcement and the side longitudinal reinforcement through steel wires.
8. The anchor node of the frame concrete column reinforcement according to claim 7, characterized in that: The stirrups include a plurality of stirrups, which are spaced apart and distributed along the length direction of the longitudinal reinforcement.
9. The anchor node of the frame concrete column reinforcement according to claim 1, characterized in that: The column cap angle steel is welded and fixedly connected to the corresponding column angle steel, and the vertical steel bar is welded and fixedly connected to the corresponding longitudinal steel strip.
10. The anchor node of the frame concrete column reinforcement according to claim 1, characterized in that: The plurality of vertical steel bars are distributed at intervals along the horizontal direction between two adjacent column angle steels, and the plurality of horizontal transverse steel bars are distributed at intervals along the vertical direction of the column angle steels.