Existing building simply supported beam reinforcing structure

Abstract

The utility model belongs to the technical field of structure reinforcing construction, and particularly discloses an existing building simply supported beam reinforcing structure which comprises two existing vertically-arranged frame columns, a simply supported beam is transversely arranged between the top ends of the frame columns, a plurality of first load-bearing steel bars are arranged in the simply supported beam, and a plurality of second load-bearing steel bars are arranged in the simply supported beam. The first load-bearing steel bars are existing steel bars, the multiple first load-bearing steel bars are arranged in a rectangular structure, the first load-bearing steel bars are transversely installed and are parallel to the arrangement direction of the simply supported beam, the welding short bars are fixedly installed at the lower ends of the peripheries of the first load-bearing steel bars where the bottom side end corners of the rectangular structure are located, and the multiple welding short bars are evenly arranged at intervals. Second load-bearing steel bars are fixedly arranged at the lower ends of the welding broken bars, the second load-bearing steel bars are newly added steel bars, grouting material reinforcing layers are arranged outside the welding short bars and the second load-bearing steel bars, and the side walls of the grouting material reinforcing layers and the side walls of the simply supported beams are coplanar.

Description

Technical Field

[0001] The utility model relates to the technical field of structural reinforcement construction, in particular to a simply supported beam reinforcement structure of an existing building. Background Art

[0002] A simply supported beam rests on supports at both ends, which only constrain vertical movement, leaving the ends free to rotate. To prevent horizontal movement of the entire beam, a horizontal constraint is typically added at one end. The support at this end is called a hinge support, while the support at the other end, without any horizontal constraint, is called a rolling support. A simply supported beam is a structure whose supports at both ends provide only vertical restraint, without any rotational restraint. In architectural design, simply supported beams are often used in load-bearing structures such as roofs, floors, and ceilings to carry loads and ensure stability.

[0003] The simply supported beams used in buildings will age over time due to the influence of various factors such as the environment or surrounding construction activities. The loads borne by the simply supported beams may change, and even various cracks may appear in some components, seriously weakening the overall stability and affecting the safety of the structure. Therefore, a reinforcement structure for the simply supported beams of existing buildings has been proposed to solve this problem. Utility Model Content

[0004] The purpose of the utility model is to provide a reinforcement structure for simply supported beams of existing buildings to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a simply supported beam reinforcement structure of an existing building, comprising two existing vertically arranged frame columns, a simply supported beam is horizontally arranged between the top ends of the frame columns, a plurality of first stress-bearing steel bars are arranged inside the simply supported beam, the first stress-bearing steel bars are existing steel bars, and the plurality of first stress-bearing steel bars are arranged in a rectangular structure, the first stress-bearing steel bars are horizontally installed parallel to the setting direction of the simply supported beam, welded short bars are fixedly installed at the lower end of the outer periphery of the first stress-bearing steel bars at the bottom side corners of the rectangular structure, a plurality of welded short bars are evenly spaced, a second stress-bearing steel bar is fixedly arranged at the lower end of the welded broken bar, the second stress-bearing steel bar is a newly added steel bar, a grouting material reinforcement layer is arranged outside the welded short bar and the second stress-bearing steel bar, and the side wall of the grouting material reinforcement layer is coplanar with the side wall of the simply supported beam.

[0006] Preferably, the first stressed steel bar is a hot-rolled ribbed steel bar with a diameter of 25 mm.

[0007] Preferably, the length of the welded short rib is 150 mm and the diameter is 25 mm.

[0008] Preferably, the second stressed steel bar is the same as the first stressed short bar.

[0009] Preferably, the connections between the first stressed steel bars, the welded short bars and the second stressed steel bars are welded to each other.

[0010] Preferably, the material of the grouting material reinforcement layer is a grouting material with a fluidity reaching Class III and a compressive strength reaching A60.

[0011] Compared with the existing technology, the beneficial effects of the present invention are: the present invention is a reinforcement structure for the simply supported beams of existing buildings. Without destroying the original structure, by arranging welded short bars and second stress-bearing steel bars added to the original first stress-bearing steel bars, the bending bearing capacity and shear bearing capacity of the beam are improved, and the stability of the building structure is enhanced. The structure is simple, the construction is convenient, and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic plan view of the reinforcement structure of the simply supported beams of an existing building according to the utility model;

[0013] Figure 2 This is a schematic elevation diagram of the utility model for reinforcing the simply supported beam structure of an existing building.

[0014] In the figure: 1. Frame column; 2. Simply supported beam; 3. First load-bearing steel bar; 4. Welded short bars; 5. Second load-bearing steel bar; 6. Grouting material reinforcement layer. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0017] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0018] See also Figure 1-2 The utility model provides a technical solution: a simply supported beam reinforcement structure of an existing building, comprising two existing vertically arranged frame columns 1, a simply supported beam 2 is horizontally arranged between the top ends of the frame columns 1, a plurality of first stress-bearing steel bars 3 are arranged inside the simply supported beam 2, the first stress-bearing steel bars 3 are existing steel bars, and the plurality of first stress-bearing steel bars 3 are arranged in a rectangular structure, the first stress-bearing steel bars 3 are horizontally installed and parallel to the setting direction of the simply supported beam 2, and the lower end of the outer periphery of the first stress-bearing steel bars 3 at the end corners of the bottom side of the rectangular structure is fixedly installed with welded short bars 4, and a plurality of welded short bars 4 are evenly spaced, and the lower end of the welded broken bars is fixedly provided with second stress-bearing steel bars 5, and the second stress-bearing steel bars 5 are newly added steel bars, and a grouting material reinforcement layer 6 is arranged outside the welded short bars 4 and the second stress-bearing steel bars 5, and the side walls of the grouting material reinforcement layer 6 are coplanar with the side walls of the simply supported beam 2.

[0019] Furthermore, the first stress-bearing steel bar 3 is a hot-rolled ribbed steel bar with a diameter of 25 mm.

[0020] Furthermore, the length of the welded short rib 4 is 150 mm and the diameter is 25 mm.

[0021] Furthermore, the second stress-bearing steel bar 5 is the same as the first stress-bearing short bar.

[0022] Furthermore, the connections between the first stressed steel bars 3 , the welded short bars 4 and the second stressed steel bars 5 are welded to each other.

[0023] Furthermore, the material of the grouting material reinforcement layer 6 is a grouting material with a fluidity reaching Class III and a compressive strength reaching A60.

[0024] Working principle: The utility model provides a simply supported beam reinforcement structure of an existing building, comprising two existing vertically arranged frame columns 1, a simply supported beam 2 is transversely arranged between the top ends of the frame columns 1, a plurality of first stress-bearing steel bars 3 are arranged inside the simply supported beam 2, the first stress-bearing steel bars 3 are existing steel bars, and the plurality of first stress-bearing steel bars 3 are arranged in a rectangular structure, the first stress-bearing steel bars 3 are transversely installed and parallel to the setting direction of the simply supported beam 2, the first stress-bearing steel bars 3 at the bottom corner of the rectangular structure are fixedly installed with welded short bars 4 at the outer periphery, a plurality of welded short bars 4 are evenly spaced, the lower end of the welded broken bars is fixedly provided with second stress-bearing steel bars 5, the second stress-bearing steel bars 5 is a newly added steel bar. When the second stressed steel bar 5 is fixed, it is parallel to the first stressed steel bar 1. A grouting material reinforcement layer 6 is provided outside the welded short bar 4 and the second stressed steel bar 5. The side wall of the grouting material reinforcement layer 6 is coplanar with the side wall of the simply supported beam 2. During the specific implementation, the protective layer outside the first stressed steel bar 3 at the bottom of the simply supported beam 2 is removed to expose the first stressed steel bar 3 to the air. Then, the full welding process is used to fix the welded short bar 4 and the second stressed steel bar 5 on the first stressed steel bar 3 in turn. After fixing, a surface layer formwork is set outside the steel bar, and grouting material is poured into the surface layer formwork. After the grouting material solidifies, a grouting material reinforcement layer 6 is formed, and the grouting material reinforcement layer 6 and the simply supported beam 2 form a whole.

[0025] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A simply supported beam reinforcement structure for an existing building, characterized by: The invention comprises two existing vertically arranged frame columns (1), a simply supported beam (2) is transversely arranged between the top ends of the frame columns (1), a plurality of first stress-bearing steel bars (3) are arranged inside the simply supported beam (2), the first stress-bearing steel bars (3) are existing steel bars, the plurality of first stress-bearing steel bars (3) are arranged in a rectangular structure, the first stress-bearing steel bars (3) are transversely installed in parallel with the setting direction of the simply supported beam (2), a welded short bar (4) is fixedly installed at the lower end of the outer periphery of the first stress-bearing steel bars (3) at the bottom corner of the rectangular structure, a plurality of welded short bars (4) are evenly spaced, a second stress-bearing steel bar (5) is fixedly arranged at the lower end of the welded short bar, the second stress-bearing steel bar (5) is a newly added steel bar, a grouting material reinforcement layer (6) is arranged outside the welded short bar (4) and the second stress-bearing steel bar (5), and the side wall of the grouting material reinforcement layer (6) is coplanar with the side wall of the simply supported beam (2).

2. The simply supported beam reinforcement structure for an existing building according to claim 1, characterized in that: The first stress-bearing steel bar (3) is a hot-rolled ribbed steel bar with a diameter of 25 mm.

3. The simply supported beam reinforcement structure for an existing building according to claim 1, characterized in that: The length of the welded short rib (4) is 150 mm and the diameter is 25 mm.

4. The simply supported beam reinforcement structure for an existing building according to claim 1, characterized in that: The second stress-bearing steel bar (5) is the same as the first stress-bearing short bar.

5. The simply supported beam reinforcement structure for an existing building according to claim 1, characterized in that: The connections between the first stressed steel bar (3), the welded short bar (4) and the second stressed steel bar (5) are welded to each other.

6. The simply supported beam reinforcement structure for an existing building according to claim 1, characterized in that: The material of the grouting material reinforcement layer (6) is a grouting material with a fluidity reaching Class III and a compressive strength reaching A60.

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