Node structure with secondary beam lower than main beam and close to frame column in structure disassembly and reformation

Abstract

The utility model relates to a node structure with a secondary beam lower than a main beam and close to a frame column, belongs to the technical field of building construction, and particularly relates to a node structure with the secondary beam lower than the main beam and close to the frame column in structural disassembly and reformation. The end part of each main bar is fixedly mounted on the reinforcing steel bar, and the plurality of hanging bars are mounted at the intersection of the main beam and the secondary beam at equal intervals; according to the utility model, the construction problem that the beam bottom of the newly added secondary beam is lower than the beam bottom of the newly added main beam is solved, the economical efficiency and the safety are improved, and the problems that the section height of the newly added main beam is usually higher than that of the secondary beam, and when part of structural space is limited and the main beam can only be designed to be a flat beam, the construction cost is low are solved. If the secondary beam is higher than the main beam, namely the bottom of the secondary beam is far lower than the main beam, a series of problems about building construction are easily caused.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a structural design for secondary beams being lower than the main beams and adjacent to frame columns during structural demolition and alteration. Background Technology

[0002] Structural alterations typically involve changes to the structure of a building or renovation, which may include demolishing walls or reinforcing the structure.

[0003] In traditional structural alterations, the cross-sectional height of newly added main beams is often higher than that of secondary beams. When the structural space is limited and the main beam can only be designed as a flat beam, the height of the secondary beam will be higher than that of the main beam, that is, the bottom of the secondary beam will be much lower than that of the main beam, which can easily lead to a series of structural problems.

[0004] Based on this, the present invention provides a structural design where the secondary beam is lower than the main beam and close to the frame column during structural alteration. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model proposes a construction method where the secondary beam is lower than the main beam and close to the frame column node during structural alteration. This solves the problem of the bottom of the newly added secondary beam being lower than the bottom of the newly added main beam during structural alteration, thus improving both economy and safety.

[0006] The technical solution to achieve the purpose of this utility model is as follows: a structural modification where the secondary beam is lower than the main beam and close to the frame column node, including a frame column, a main beam and a secondary beam. The frame column is externally fixed with reinforcing bars. The main beam includes two pairs of main bars, the end of each main bar is fixedly installed on the reinforcing bars. The secondary beam includes multiple hanging bars and structural bars. The multiple hanging bars are equidistantly installed at the intersection of the main beam and the secondary beam, and the end of each hanging bar is fixed by welding. The bottom of the multiple hanging bars is jointly fixed with secondary longitudinal bars.

[0007] In some embodiments, multiple main longitudinal bars are fixedly installed at equal intervals on the two pairs of main bars, and the two ends of the structural steel bars are respectively anchored into the interior of the main beam and the outer node of the frame column.

[0008] In some embodiments, multiple reinforced stirrups (I) are fixedly installed between the main beam and the structural reinforcement, and multiple reinforced stirrups (II) are fixedly installed on the side of the main beam near the secondary beam. Multiple stirrups are also fixedly installed on both the reinforced stirrups (I) and the reinforced stirrups (II).

[0009] In some embodiments, the main reinforcing bars and the structural reinforcing bars are welded together and fixed with anchor bars.

[0010] Compared with existing technologies, the significant advantages of this invention are:

[0011] Firstly, this utility model improves the structural stability of the main and secondary beams by using hanging bars, denser stirrups, and secondary beam reinforcement bars between the newly added secondary beams and the main beams, thereby avoiding the structural problem of the bottom of the newly added secondary beam being lower than the bottom of the main beam during structural demolition and alteration, thus improving economy and safety.

[0012] Secondly, this utility model not only has a relatively simple structure and is convenient and efficient to construct, but also has a low cost. It can greatly improve the structural problems that occur in structural modification and has high practicality and broad application prospects.

[0013] This solves the problem that in traditional structural alterations, the cross-sectional height of the newly added main beam is often higher than that of the secondary beam. When the structural space is limited and the main beam can only be designed as a flat beam, the height of the secondary beam is higher than that of the main beam, meaning that the bottom of the secondary beam is much lower than that of the main beam. This can easily lead to a series of problems related to building construction. Attached Figure Description

[0014] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure provided by this utility model;

[0016] Figure 2 This is a schematic diagram of the overall internal frame structure provided by this utility model.

[0017] Explanation of reference numerals in the attached figures:

[0018] 1. Frame column; 2. Reinforcing steel bars; 3. Main beam; 4. Secondary beam; 5. Main reinforcement bars; 6. Main longitudinal reinforcement bars; 7. Hanging bars; 8. Stirrups; 9. Stirrup reinforcement bar 1; 10. Stirrup reinforcement bar 2; 11. Secondary longitudinal reinforcement bars; 12. Structural reinforcement bars; 13. Rebar anchoring. Detailed Implementation

[0019] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0020] This utility model provides an improved structural design for secondary beams that are lower than the main beams and adjacent to frame columns during structural alteration. The technical solution of this utility model is as follows:

[0021] like Figures 1-2As shown, a structural modification involves a secondary beam lower than the main beam and adjacent to a frame column node. The structure includes a frame column 1, a main beam 3, and a secondary beam 4. Reinforcing steel bars 2 are fixedly installed on the exterior of the frame column 1. The main beam 3 includes two pairs of main reinforcing bars 5, with the end of each main reinforcing bar 5 fixedly installed on the reinforcing steel bar 2. The secondary beam 4 includes multiple hanging bars 7 and structural steel bars 12. Multiple hanging bars 7 are equidistantly installed at the intersection of the main beam 3 and the secondary beam 4, and the end of each hanging bar 7 is fixed by welding. Secondary longitudinal reinforcing bars 11 are fixedly installed at the bottom of the multiple hanging bars 7. The structural strength of the main beam 3 and the secondary beam 4 can be improved by setting the main reinforcing bars 5, hanging bars 7, and structural steel bars 12, thereby avoiding structural problems that may occur during structural modification.

[0022] Furthermore, multiple longitudinal reinforcement bars 6 are fixedly installed at equal intervals on the two pairs of main reinforcement bars 5. The two ends of the structural reinforcement bars 12 are anchored into the interior of the main beam 3 and the outer node of the frame column 1, respectively. The main longitudinal reinforcement bars 6 are used in conjunction with the main reinforcement bars 5 to form a reinforcement cage, which facilitates the pouring of the main beam 3 and provides a solid foundation.

[0023] Furthermore, multiple reinforced stirrups 1-9 are fixedly installed between the main beam 3 and the structural steel reinforcement 12. Multiple reinforced stirrups 2-10 are fixedly installed on the side of the main beam 3 near the secondary beam 4. Multiple stirrups 8 are fixedly installed on both the reinforced stirrups 1-9 and the reinforced stirrups 2-10. The multiple reinforced stirrups 1-9 and reinforced stirrups 2-10 can further improve the structural strength at the junction of the main beam 3 and the secondary beam 4, thereby improving the stability of the connection.

[0024] Furthermore, the main reinforcement 5 and the structural reinforcement 12 are welded together with anchor bars 13. The anchor bars 13 can improve the stability of the connection between the main reinforcement 5 and the structural reinforcement 12, and improve the stability of the connection between the main beam 3 and the secondary beam 4 and the frame column 1.

[0025] The specific working method is as follows: First, the surface of the frame column 1 is roughened and cleaned, and the reinforcing steel bars 2 are tied. The main reinforcing bars 5 on both sides of the newly added main beam 3 are anchored into the outer reinforcement node of the frame column 1 and bent into hooks. Four 25mm diameter hanging bars 7 are set at the junction of the main beam 3 and the secondary beam 4, and the top of the hanging bars 7 are closed and welded together. In addition, at the junction of the main beam 3 and the secondary beam 4, the main beam 3 is reinforced with secondary stirrups 2 10 and secondary stirrups 1 9. The secondary beam 4 is reinforced with secondary beam 4 reinforcement structural steel bars 12 around the outside, which extend to the top of the main beam 3 and are horizontally anchored into the main beam 3. The other end of the structural steel bars 12 is anchored into the outer reinforcement node of the frame column 1. Finally, after all the steel bars are tied and the formwork is reinforced, concrete is poured. By setting up the hanging bars 7 and structural steel bars 12, the structural problem that the bottom of the newly added secondary beam 4 is lower than the bottom of the newly added main beam 3 during structural demolition and modification is solved, and both economy and safety are improved.

[0026] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.

Claims

1. A structure in the process of being modified, in which a secondary beam is lower than a main beam and is adjacent to a frame column node structure, comprising a frame column (1), a main beam (3) and a secondary beam (4), a reinforcing steel bar (2) is fixedly installed on the outside of the frame column (1), characterized in that: The main beam (3) includes two pairs of main reinforcement bars (5), and the end of each main reinforcement bar (5) is fixedly installed on the reinforcing steel bar (2). The secondary beam (4) includes multiple hanging bars (7) and structural steel bars (12). The multiple hanging bars (7) are installed at equal intervals at the intersection of the main beam (3) and the secondary beam (4), and the end of each hanging bar (7) is fixed by welding. The bottom of the multiple hanging bars (7) is fixedly installed with secondary longitudinal reinforcement bars (11).

2. A construction in which the secondary beam is lower than the main beam and is adjacent to the frame column node structure according to claim 1, characterized in that: Multiple main longitudinal bars (6) are fixedly installed at equal intervals on the two pairs of main bars (5). The two ends of the structural steel bars (12) are respectively anchored into the interior of the main beam (3) and the outer node of the frame column (1).

3. A construction in which the secondary beam is lower than the main beam and is adjacent to the frame column node structure according to claim 1, characterized in that: Multiple reinforced stirrups (9) are fixedly installed between the main beam (3) and the structural steel reinforcement (12). Multiple reinforced stirrups (10) are fixedly installed on the side of the main beam (3) near the secondary beam (4). Multiple stirrups (8) are fixedly installed on both the reinforced stirrups (9) and the reinforced stirrups (10).

4. The construction of claim 1, wherein: the secondary beam is lower than the primary beam and is adjacent to the frame column node. The main reinforcement (5) and the structural reinforcement (12) are welded together with a reinforcing bar (13).

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