Strengthening structures to improve the seismic performance of earthquake-damaged RC frame structures

Abstract

This utility model discloses a reinforcement structure for improving the seismic performance of a damaged reinforced concrete (RC) frame structure, relating to the field of building construction technology. It includes frame beams and frame columns, with the frame columns connected by multiple spaced-apart frame beams. A steel frame is also provided outside the frame columns and frame beams, comprising a first covering steel frame and a second covering steel frame. This utility model, by setting a steel frame consisting of a first covering steel frame, a second covering steel frame, reinforcing beams, cross supports, and carbon fiber fabric layers outside the frame beams and frame columns, allows the first and second covering steel frames to cover the frame columns. Combined with the carbon fiber fabric layers, this improves the structure's load-bearing capacity and ductility, effectively enhancing the shear strength and bending resistance of the components. Furthermore, the device can also incorporate concrete and reinforcing steel within the steel frame, further enhancing its load-bearing capacity and stiffness, and improving the structure's shear strength and bending resistance.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a reinforcement structure for improving the seismic performance of earthquake-damaged RC frame structures. Background Technology

[0002] Earthquakes, as a natural disaster, can cause severe damage to buildings, thus threatening people's lives and property. In building structural design, RC (reinforced concrete) frame structures are widely used due to their flexibility, short construction period, and mature technology, making them one of the most common structural systems in modern construction engineering. However, past earthquake disasters have shown that RC frame structures in earthquake-affected areas suffer from insufficient lateral stiffness and low horizontal resistance, making these structures vulnerable to damage during earthquakes.

[0003] Specifically, when subjected to seismic forces, the weak points of RC frame structures mainly lie in the joint areas and the shear strength and bending capacity of the structural members. During small to medium-sized earthquakes, although the overall structure may not completely collapse, it will suffer varying degrees of damage, such as crack propagation and concrete spalling, severely impacting the structure's safety and functionality. Under strong earthquakes, these structures may suffer severe damage or even collapse, causing incalculable loss of life and property.

[0004] Therefore, how to effectively repair and reinforce damaged RC frame structures to meet the load-bearing capacity and seismic resistance requirements under current codes is an urgent problem to be solved. Thus, this utility model proposes a reinforcement structure to improve the seismic performance of earthquake-damaged RC frame structures. Utility Model Content

[0005] Technical problems to be solved

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a reinforcement structure to improve the seismic performance of earthquake-damaged RC frame structures.

[0007] Technical solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a reinforcement structure for improving the seismic performance of a damaged RC frame structure, comprising frame beams and frame columns. The frame columns are connected by multiple spaced frame beams. A steel frame is also provided on the outside of the frame columns and frame beams. The steel frame includes a first covered steel frame and a second covered steel frame, which are connected by reinforcing beams. A cross brace is also provided between the first covered steel frame and the second covered steel frame. A carbon fiber cloth layer is also provided on the inner wall of the first covered steel frame and the second covered steel frame. By setting a steel frame consisting of a first covered steel frame, a second covered steel frame, reinforcing beams, cross brace, and carbon fiber cloth layer on the outside of the frame beams and frame columns, the first covered steel frame and the second covered steel frame cover the outside of the frame columns. With the addition of the carbon fiber cloth layer, the load-bearing capacity and ductility of the structure can be improved, effectively enhancing the shear strength and bending resistance of the components.

[0009] Preferably, the bottom of the steel frame is also provided with a rubber vibration isolation pad.

[0010] Preferably, the steel frame is a hollow structure, and the interior of the steel frame is also provided with concrete and steel bars. The device can also provide concrete and steel bars inside the steel frame, which can further enhance its load-bearing capacity and stiffness, and improve the shear strength and bending resistance of the structure.

[0011] Preferably, both the first and second covered steel frames are provided with connecting holes, the reinforcing crossbeam is inserted into the connecting holes, the two ends of the reinforcing crossbeam are provided with connecting threads, and the two ends of the reinforcing crossbeam are threadedly connected with limit nuts.

[0012] Preferably, the carbon fiber cloth layer is bonded to the surface of the frame column component.

[0013] Preferably, the first and second covered steel frames are further provided with mounting holes for installing cross supports.

[0014] Preferably, the end of the cross support is installed inside the mounting hole, and the end of the cross support is provided with a connecting thread, and the end of the cross support is threadedly connected to a limit nut.

[0015] Beneficial effects:

[0016] Compared with existing technologies, this reinforcement structure for improving the seismic performance of earthquake-damaged RC frame structures has the following beneficial effects:

[0017] This utility model constructs a steel frame consisting of a first covered steel frame, a second covered steel frame, a reinforcing beam, a cross brace, and a carbon fiber cloth layer, which is installed outside the frame beams and frame columns. In use, the first and second covered steel frames cover the outside of the frame columns. With the addition of the carbon fiber cloth layer, the load-bearing capacity and ductility of the structure can be improved, effectively enhancing the shear strength and bending resistance of the components. In addition, the device can also contain concrete and steel bars inside the steel frame, which can further enhance its load-bearing capacity and stiffness, and improve the shear strength and bending resistance of the structure. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the steel frame structure of this utility model;

[0021] Figure 3 This is a front view structural diagram of the present utility model;

[0022] Figure 4 This is a top view of the steel frame structure of this utility model.

[0023] In the picture:

[0024] 1. Frame beams; 2. Frame columns; 3. Steel frame; 4. Rubber vibration isolation pads; 5. Concrete; 6. Reinforcing steel; 301. First covering steel frame; 302. Second covering steel frame; 303. Reinforcing beams; 304. Cross supports; 305. Carbon fiber cloth layers; 306. Limiting nuts; 307. Second limiting nut. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-4As shown, this utility model provides a technical solution: a reinforcement structure for improving the seismic performance of a damaged RC frame structure, including frame beams 1 and frame columns 2. The frame columns 2 are connected by multiple spaced frame beams 1. A steel frame 3 is also provided outside the frame columns 2 and frame beams 1. The steel frame 3 includes a first covering steel frame 301 and a second covering steel frame 302. The first covering steel frame 301 and the second covering steel frame 302 are connected by reinforcing beams 303. A cross brace 304 is also provided between the first covering steel frame 301 and the second covering steel frame 302. Carbon fiber cloth layer 305 is also provided on the inner wall of frame 301 and second covered steel frame 302. The carbon fiber cloth layer is pasted on the surface of the frame column 2. By setting the steel frame 3 composed of first covered steel frame 301, second covered steel frame 302, reinforcing beam 303, cross support 304 and carbon fiber cloth layer 305 on the outside of frame beam 1 and frame column 2, the first covered steel frame 301 and second covered steel frame 302 are wrapped around the outside of frame column 2 when in use. With the setting of carbon fiber cloth layer 305, the load-bearing capacity and ductility of the structure can be improved, and the shear strength and bending capacity of the components can be effectively enhanced.

[0027] Please refer to the following carefully. Figure 2 and Figure 4 The bottom of the steel frame 3 is also equipped with a rubber vibration isolation pad 4. The steel frame 3 is a hollow structure. The interior of the steel frame 3 is also equipped with concrete 5 and steel bars 6. This device can also be equipped with concrete 5 and steel bars 6 inside the steel frame 3, which can further enhance its load-bearing capacity and stiffness, and improve the shear strength and bending resistance of the structure.

[0028] Please refer to the following carefully. Figure 1 and Figure 2 Both the first covering steel frame 301 and the second covering steel frame 302 are provided with connecting holes. The reinforcing crossbeam 303 is inserted into the connecting hole. Both ends of the reinforcing crossbeam 303 are provided with connecting threads, and the two ends of the reinforcing crossbeam 303 are threadedly connected with limit nuts 306.

[0029] Please refer to the following carefully. Figure 2 The first covering steel frame 301 and the second covering steel frame 302 are also provided with mounting holes for mounting cross supports 304. The end of the cross support 304 is installed inside the mounting hole, and the end of the cross support 304 is provided with a connecting thread 2, and the end of the cross support 304 is threadedly connected with a limit nut 2 307.

[0030] Working principle: A steel frame 3 consisting of a first covering steel frame 301, a second covering steel frame 302, a reinforcing beam 303, a cross support 304, and a carbon fiber cloth layer 305 is installed outside the frame beam 1 and frame column 2. In use, the first covering steel frame 301 and the second covering steel frame 302 cover the outside of the frame column 2. With the addition of the carbon fiber cloth layer 305, the load-bearing capacity and ductility of the structure can be improved, effectively enhancing the shear strength and bending capacity of the components. In addition, the device can also install concrete 5 and steel bars 6 inside the steel frame 3, which can further enhance its load-bearing capacity and stiffness.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A reinforcing structure for improving the seismic performance of a damaged RC frame structure, comprising frame beams (1) and frame columns (2), the frame columns (2) being connected by a plurality of frame beams (1) arranged at intervals, characterized in that: The frame columns (2) and frame beams (1) are also provided with steel frames (3). The steel frames (3) include a first covering steel frame (301) and a second covering steel frame (302). The first covering steel frame (301) and the second covering steel frame (302) are connected by a reinforcing beam (303). A cross support (304) is also provided between the first covering steel frame (301) and the second covering steel frame (302). The inner walls of the first covering steel frame (301) and the second covering steel frame (302) are also provided with carbon fiber cloth layers (305). ​ 2. The retrofit construction for improving the seismic performance of a seismic RC frame structure according to claim 1, characterized in that: The bottom of the steel frame (3) is also provided with a rubber vibration isolation pad (4).

3. The retrofit construction for improving the seismic performance of a seismic RC frame structure according to claim 1, characterized in that: The steel frame (3) is a hollow structure, and the interior of the steel frame (3) is also provided with concrete (5) and steel bars (6).

4. The retrofit construction for improving the seismic performance of a seismic RC frame structure according to claim 1, characterized in that: Both the first and second covered steel frames (301) are provided with connecting holes. The reinforcing crossbeam (303) is inserted into the connecting hole. Both ends of the reinforcing crossbeam (303) are provided with connecting threads, and both ends of the reinforcing crossbeam (303) are threadedly connected with limit nuts (306).

5. The reinforcement structure for improving the seismic performance of a damaged RC frame structure according to claim 1, characterized in that: The carbon fiber cloth layer is bonded to the surface of the frame column (2).

6. The retrofit construction for improving the seismic performance of a seismic RC frame structure according to claim 1, characterized in that: The first and second covered steel frames (301) are also provided with mounting holes for installing cross supports (304).

7. The retrofit construction for improving the seismic performance of a seismic RC frame structure according to claim 1, characterized in that: The end of the cross support (304) is installed inside the mounting hole, and the end of the cross support (304) is provided with a connecting thread two, and the end of the cross support (304) is threadedly connected with a limit nut two (307).

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