Reinforcing structure for in-situ utilization of center pillar of reinforced concrete frame structure

Abstract

The utility model relates to the technical field of constructional engineering, in particular to a reinforced concrete frame structure center pillar in-situ utilization reinforcing structure which comprises two side pillars, a stress rib and a formwork, the two side pillars are symmetrically distributed relative to the center pillar and are both parallel to the length direction of the center pillar, a through hole is formed in the upper half portion of the center pillar, and the stress rib is arranged in the through hole. The stress ribs penetrate through the through holes and are connected with the middle column, the two ends of the stress ribs are inserted into the two side columns respectively, the stress ribs are axially distributed in the direction perpendicular to the length direction of the side columns, static cutting and section treatment are conducted on the lower half portion of the middle column, the formwork is arranged between the side columns and the middle column in a supported mode, and concrete is poured on the stress ribs and the formwork to form a new supporting layer; according to the in-situ utilization reinforcing structure for the center pillar of the reinforced concrete frame structure, damage to a temporary supporting structure caused by overlarge load can be effectively reduced, the temporary supporting structure can be kept in a good state after being dismantled, possibility is provided for reutilization of the temporary supporting structure, and therefore the utilization rate of resources is increased, and the construction cost is reduced.

Description

Technical Field

[0001] This application relates to the technical field of construction engineering, and particularly to a reinforcement structure for in-situ utilization of middle columns in a reinforced concrete frame structure. Background Art

[0002] In the field of construction engineering, reinforced concrete frame structures are widely used in various construction projects. However, with the continuous development of cities and the changing functions of buildings, some existing reinforced concrete frame structures may need to be renovated or some components removed. As the middle column is a key component in the frame structure that bears vertical loads and transfers horizontal forces, its removal work is particularly important and complex. Therefore, how to ensure the overall stability of the frame structure and reduce the impact on the surrounding structures while removing the middle column has become an urgent problem to be solved in construction engineering.

[0003] A common practice in the prior art is to add a temporary support structure to share the load of the middle column before removing the middle column; the temporary support structure usually includes a temporary steel frame, a supporting wall, and cables. The temporary steel frame is assembled by combining components such as steel pipes and steel beams, and the steel pipes, steel beams and other components are combined together by welding, bolt connection and other methods to form a stable support structure; the supporting wall is generally cast with reinforced concrete and connected to the original structure by means of embedded parts, implanted steel bars, etc. Cable support is generally connected to the building and the ground or other buildings by high-strength cables or steel ropes; before removing the middle column, first determine the position of the temporary support structure to be added according to the structural characteristics of the building and the demolition plan, and then install and connect the temporary support structure. After the installation of the temporary support structure is completed, conduct an overall inspection to ensure that the support structure can effectively share the load of the middle column. Then remove the middle column, while closely monitoring the stability and safety of the temporary support structure. After the middle column is removed, promptly remove the temporary support structure and clean up and dispose of the waste generated during the demolition process.

[0004] Regarding the above related technologies, since the temporary support structure is easily damaged during the removal of the middle column, the temporary support structure often cannot be reused after removal, which affects the resource utilization rate and increases the construction cost. Utility Model Content

[0005] In order to reduce the construction cost, this application provides a reinforcement structure for in-situ utilization of middle columns in a reinforced concrete frame structure.

[0006] A reinforcement structure for in-situ utilization of middle columns in a reinforced concrete frame structure provided by this application adopts the following technical solutions:

[0007] A reinforcement structure for in-situ utilization of middle columns in a reinforced concrete frame structure includes two side columns, stress bars, and formwork;

[0008] The two side columns are symmetrically distributed with respect to the middle column, and both of the two side columns are arranged parallel to the length direction of the middle column;

[0009] A through hole is provided in the upper half of the middle column, the stress bar passes through the through hole and is connected to the middle column, both ends of the stress bar are respectively inserted into the two side columns, and the axial direction of the stress bar is distributed perpendicular to the length direction of the side column. The lower half of the middle column is subjected to static cutting and section treatment;

[0010] The formwork is supported between the side column and the middle column;

[0011] Concrete is poured on the stress bar and the formwork to form a new support layer.

[0012] By adopting the above technical solution, in the reinforced concrete frame structure, the in-situ utilization and reinforcement structure of the middle column is set. First, stress bars are arranged between the two side columns and the middle column, and then both ends of the stress bars are inserted into the two side columns and cooperate with the formwork to pour a new support layer, which is beneficial to optimizing the stress distribution, enabling the load to be more evenly dispersed to the entire reinforcement structure, effectively improving the overall stability of the temporary support structure, enabling the temporary support structure to withstand a greater load during the process of removing the middle column, reducing the damage caused by excessive load, enabling it to maintain a good state after removal, providing the possibility for the reuse of the temporary support structure, thereby improving the utilization rate of resources and reducing the construction cost.

[0013] Preferably, the connection part between the through hole and the stress bar is filled and anchored with an adhesive.

[0014] By adopting the above technical solution, using the adhesive to fill and anchor can effectively bond the stress bar and the concrete matrix tightly, prevent the connection from loosening or falling off due to uneven stress or vibration, etc., ensure that the connection between the stress bar and the through hole is more firm, thereby improving the bearing capacity and stability of the entire reinforcement structure; at the same time, the price of the adhesive is relatively low, using the adhesive for connection can reduce the cost of the entire reinforcement structure, effectively prevent the erosion of harmful substances such as moisture and corrosive media on the connection part, and thus extend the service life of the reinforcement structure.

[0015] Preferably, the diameter of the stress bar is greater than Φ12.

[0016] By adopting the above technical solution, the diameter of the stress bar directly affects its stress area. When the diameter is greater than Φ12, the stress area increases accordingly, enabling the stress bar to withstand greater tensile stress or compressive stress. Especially in key nodes such as the reinforcement structure after the middle column is removed, it can effectively cope with the additional load generated due to structural changes, reduce structural deformation, reduce the risk of stress concentration, and reduce the structural damage caused by stress concentration.

[0017] Preferably, it further includes supporting ribs, and the supporting ribs include a horizontal part and two vertical parts integrally arranged, and the two vertical parts are respectively fixedly connected to both ends of the horizontal section;

[0018] The stress-bearing bars are arranged through the enclosed area formed by the horizontal part and the vertical part.

[0019] By adopting the above technical solution, the supporting ribs are composed of a horizontal part and two vertical parts integrally arranged, enabling it to form a stable supporting structure. In the reinforcement structure, this supporting structure can effectively resist the forces in the horizontal direction. When the stress-bearing bars are arranged through the enclosed area formed by the horizontal part and the vertical part of the supporting ribs, a stable cross-support can be formed between the stress-bearing bars and the supporting ribs, so that the load can be more evenly distributed to the entire reinforcement structure during the transmission process, which is beneficial to improving the bearing capacity and stability of the reinforcement structure.

[0020] Preferably, a plurality of the supporting ribs are provided, and the plurality of supporting ribs are evenly distributed along the axial direction of the stress-bearing bars.

[0021] By adopting the above technical solution, the uniform distribution of a plurality of supporting ribs facilitates the formation of a more stable supporting network. This layout can effectively resist the loads in various directions, including the lateral and longitudinal forces, which is beneficial to enhancing the overall stability of the reinforcement structure; the uniform distribution and the increase in the number of supporting ribs are beneficial to reducing the load on a single supporting rib and reducing the risk of rework caused by the damage of the supporting ribs.

[0022] Preferably, two stress-bearing bars are provided, and the two stress-bearing bars are respectively fixedly connected to the joints of the two vertical parts and the horizontal part.

[0023] By adopting the above technical solution, fixing the two stress-bearing bars at the joints of the two vertical parts and the horizontal part of the supporting ribs can form a more stable supporting system, effectively resist the forces and torques from different directions, significantly improve the rigidity and stability of the structure, and ensure that its shape and position remain unchanged when bearing the load. The setting of the two stress-bearing bars can disperse the load to the two supporting ribs, which is beneficial to further reducing the risk of stress concentration and improving the overall bearing capacity and durability of the reinforcement structure.

[0024] Preferably, the stress-bearing bars are tied or welded to the supporting ribs.

[0025] By adopting the above technical solution, the cross-tying or welding between the steel bars can form a certain lap length, realizing the fixed connection between the stress-bearing bars and the supporting ribs, thereby improving the stability of the entire reinforcement structure. Especially when bearing the load, this connection method can effectively resist deformation and displacement and maintain the stability and safety of the reinforcement structure.

[0026] Preferably, the formwork is removed after the concrete strength of the new support layer reaches the requirement.

[0027] By adopting the above technical solution, the formwork plays a role in support and protection before the concrete of the new support layer solidifies, preventing the concrete from deforming or being damaged externally, which is beneficial to improving the appearance quality of the reinforcement structure. At the same time, it also helps to improve the durability and service life of the reinforcement structure. Removing the formwork after the concrete strength reaches the requirement means that the concrete already has sufficient strength and stability to support itself without deformation or damage, thus ensuring the safety of the entire structure.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. In the reinforced concrete frame structure, the middle column of the in-situ utilization reinforcement structure is set. First, stress bars are arranged between the two side columns and the middle column, and then both ends of the stress bars are inserted into the two side columns and poured with the formwork to form a new support layer, which is beneficial to optimizing the stress distribution, enabling the load to be more evenly dispersed to the entire reinforcement structure, effectively improving the overall stability of the temporary support structure. During the process of removing the middle column, the temporary support structure can bear a greater load, reducing damage caused by excessive load, enabling it to maintain a better state after removal, providing the possibility for the reuse of the temporary support structure, thereby improving the utilization rate of resources and reducing the construction cost.

[0030] 2. The uniform distribution of multiple support bars facilitates the formation of a more stable support network. This layout can effectively resist loads in various directions, including horizontal and vertical forces, which is beneficial to enhancing the overall stability of the reinforcement structure; the uniform distribution and increased number of support bars are beneficial to reducing the load on a single support bar and reducing the risk of rework caused by the damage of the support bar. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic diagram of the overall structure before the removal of the middle column of the in-situ utilization reinforcement structure of the middle column in the reinforced concrete frame structure of the embodiment of the present application.

[0032] Figure 2 is a cross-sectional view before the removal of the middle column of the in-situ utilization reinforcement structure of the middle column in the reinforced concrete frame structure of the embodiment of the present application.

[0033] Figure 3 is a schematic diagram of the overall structure after the removal of the middle column of the in-situ utilization reinforcement structure of the middle column in the reinforced concrete frame structure of the embodiment of the present application.

[0034] Figure 4 is a cross-sectional view after the removal of the middle column of the in-situ utilization reinforcement structure of the middle column in the reinforced concrete frame structure of the embodiment of the present application.

[0035] Description of reference numerals: 01, middle column; 011, through hole; 1, side column; 2, stress bar; 3, support bar; 31, vertical part; 32, horizontal part; 4, formwork; 5, new support layer. Detailed implementation mode

[0036] The following will further describe this application in detail with reference to the Figures 1-4 accompanying drawings.

[0037] The embodiment of this application discloses a reinforcement structure for in-situ utilization of the middle column in a reinforced concrete frame structure.

[0038] Referring to Figures 1-4 , a reinforcement structure for in-situ utilization of the middle column in a reinforced concrete frame structure includes two side columns 1, two stress bars 2, multiple support bars 3 and a formwork 4. The two side columns 1 are respectively arranged on both sides of the middle column 01, and the two side columns 1 are symmetrically distributed about the middle column 01. The length direction of the side column 1 is arranged parallel to the length direction of the middle column 01. A through hole 011 is opened on the upper half of the middle column 01 near the top side of the middle column 01. The stress bar 2 passes through the through hole 011 and is perfusion-anchored to the middle column 01 through an adhesive. The two ends of the stress bar 2 are respectively implanted into the two side columns 1, and the axial direction of the stress bar 2 is distributed perpendicular to the length directions of the side column 1 and the middle column 01. The lower half of the middle column 01 is subjected to static cutting and section treatment. To enable the stress bar 2 to withstand greater tensile stress or compressive stress, especially in the reinforcement structure after the removal of the middle column 01 at key nodes, it can effectively cope with the additional load generated due to structural changes, reduce structural deformation, and reduce the risk of stress concentration. In this application, the diameter of the stress bar 2 is set to be greater than Φ12.

[0039] Referring to Figures 2-4 , multiple support bars 3 are evenly distributed along the length direction of the stress bar 2. The support bar 3 includes a horizontally arranged horizontal part 32 and two vertically arranged vertical parts 31 which are integrally formed. The two vertical parts 31 are respectively welded to both ends of the horizontal part 32, and the two vertical parts 31 are symmetrically distributed about the horizontal part 32. The stress bar 2 passes through the enclosed area formed by the horizontal part 32 and the vertical parts 31. To effectively resist forces and torques from different directions, significantly improve the rigidity and stability of the reinforcement structure, and ensure that its shape and position remain unchanged when bearing loads, in this application, there are two stress bars 2, and the two stress bars 2 are respectively connected to the connection part of the vertical part 31 and the horizontal part 32. In this application, the stress bar 2 and the support bar 3 can be welded or tied. To ensure the connection strength between the support bar 3 and the stress bar 2, in this embodiment, the stress bar 2 and the support bar 3 are welded; the formwork 4 is supported between the side column 1 and the middle column 01, and the length direction of the formwork 4 is arranged parallel to the axial direction of the stress bar 2. Concrete is poured on the stress bar 2 and the formwork 4 to form a new support layer 5. After the concrete strength of the new support layer 5 reaches the requirements, the formwork 4 is removed.

[0040] The implementation principle of the in-situ utilization and reinforcement structure for the middle column in a reinforced concrete frame structure in an embodiment of this application is as follows: First, two side columns 1 are located on both sides of the original middle column 01 and are symmetrically distributed with respect to the middle column 01, providing a basic support for the subsequent reinforcement structure. Then, through holes 011 are opened at the upper half of the middle column 01 near the top. Two stress-bearing bars 2 pass through these through holes 011 and are grouted and anchored to the middle column 01 with an adhesive. The two ends of the stress-bearing bars 2 are respectively implanted into the two side columns 1, enabling the stress-bearing bars 2 to effectively bear the tensile stress or compressive stress generated due to the removal of the middle column 01, reducing the risk of structural deformation and stress concentration. Next, multiple support bars 3 are evenly distributed along the length direction of the stress-bearing bars 2. The stress-bearing bars 2 pass through the enclosed area formed by the horizontal part 32 and the vertical part 31 of the support bars 3, ensuring that the support bars 3 can effectively resist forces and moments from different directions. Finally, formwork 4 is erected between the side column 1 and the middle column 01, and concrete is poured on the formwork 4 and the stress-bearing bars 2 to form a new support layer. After the concrete strength of the new support layer 5 reaches the requirements, the formwork 4 is removed to complete the construction of the entire reinforcement structure.

[0041] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. An in-situ reinforcement structure for a column in a reinforced concrete frame structure, characterized in that: It comprises two side columns (1), stress-bearing bars (2) and a formwork (4); The two side columns (1) are symmetrically distributed about the middle column (01), and the two side columns (1) are arranged parallel to the length direction of the middle column (01); The upper part of the middle column (01) is provided with a through hole (011), the force-bearing rib (2) passes through the through hole (011) and is connected to the middle column (01), the two ends of the force-bearing rib (2) are respectively inserted into the two side columns (1), and the axial direction of the force-bearing rib (2) is perpendicular to the length direction of the side columns (1), and the lower part of the middle column (01) is subjected to static cutting and cross-section processing; The template (4) is supported between the side column (1) and the middle column (01); Concrete is poured on the stress-bearing reinforcement (2) and the formwork (4) to form a new supporting layer (5).

2. The in-situ reinforcement structure for the central column of the reinforced concrete frame structure according to claim 1 is characterized by: The connection between the through hole (011) and the stress-bearing reinforcement (2) is anchored by injecting adhesive.

3. The in-situ reinforcement structure for the central column of the reinforced concrete frame structure according to claim 2 is characterized by: The diameter of the stress-bearing rib (2) is greater than Φ12.

4. The in-situ reinforcement structure for the middle column of the reinforced concrete frame structure according to claim 3 is characterized by: It also includes a support rib (3), wherein the support rib (3) includes an integrally arranged horizontal portion (32) and two vertical portions (31), wherein the two vertical portions (31) are respectively fixedly connected to two ends of the horizontal portion; The force-bearing ribs (2) are arranged through the enclosed area formed by the horizontal portion (32) and the vertical portion (31).

5. The in-situ reinforcement structure for the central column of the reinforced concrete frame structure according to claim 4 is characterized by: A plurality of the support ribs (3) are provided, and the plurality of the support ribs (3) are evenly distributed along the axial direction of the force-bearing ribs (2).

6. The in-situ reinforcement structure for the central column of the reinforced concrete frame structure according to claim 4 is characterized by: Two stress-bearing ribs (2) are provided, and the two stress-bearing ribs (2) are respectively fixedly connected to the connection points between the two vertical parts (31) and the horizontal part (32).

7. The in-situ reinforcement structure for the middle column of the reinforced concrete frame structure according to claim 6 is characterized by: The force-bearing ribs (2) and the supporting ribs (3) are bound or welded.

8. The in-situ reinforcement structure for the central column of a reinforced concrete frame structure according to claim 1 is characterized by: After the concrete strength of the new supporting layer (5) reaches the required level, the formwork (4) is removed.

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