Old house building bearing column reinforcing structure

Abstract

The utility model relates to an old house building bearing column reinforcing structure, and belongs to the technical field of constructional engineering, the old house building bearing column reinforcing structure comprises first angle steel and second angle steel, the first angle steel and the second angle steel are vertically arranged at opposite angles of a bearing column, the first angle steel is arranged at the top of a horizontal part of a floor, and the second angle steel is arranged at the bottom of a frame beam; reinforcing pieces used for connecting the first angle steel and the second angle steel are arranged at the bottom of the first angle steel and the top of the second angle steel, and longitudinal angle steel is arranged on the first angle steel and the second angle steel at the joint of the bearing column and the frame beam. Connection between the bearing column and the frame beam can be enhanced, and the overall structure is more stable.

Description

Technical Field

[0001] This application relates to the field of building engineering technology, and in particular to a reinforcement structure for load-bearing columns in old buildings. Background Technology

[0002] In building structures, beams and columns may experience quality issues during construction due to various reasons, such as improper construction, substandard materials, or design errors. Furthermore, over time, building modifications or functional changes may lead to loads exceeding original design values, potentially resulting in insufficient strength in structural members and necessitating reinforcement.

[0003] Currently, when reinforcing load-bearing columns, the dry-type external steel reinforcement technology is used. This involves installing angle steel around the load-bearing column and connecting the angle steel with gusset plates to form a non-bonded external steel reinforcement method.

[0004] However, the aforementioned technologies have the following problems: when the column body of a load-bearing column is connected to a frame beam, and the longitudinal connection is made directly to the frame beam only by the side of the angle steel of the load-bearing column, there is a possibility that the load cannot be effectively transferred from the beam to the column, resulting in uneven distribution of bearing capacity and excessive stress concentration at the connection. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides a reinforcement structure for load-bearing columns in old buildings, which can enhance the connection between load-bearing columns and frame beams, making the overall structure more stable.

[0006] This application provides a technical solution for reinforcing load-bearing columns in old buildings, using the following method:

[0007] A reinforcement structure for load-bearing columns in old buildings includes a frame beam vertically penetrating the column body, with a floor slab penetrating the top of the frame beam. The structure comprises a first angle steel and a second angle steel, with the first and second angle steels vertically positioned at opposite corners of the load-bearing column. The first angle steel is positioned at the top of the horizontal portion of the floor slab, and the second angle steel is positioned at the bottom of the frame beam. Reinforcing members for connecting the first and second angle steels are provided at the bottom and top of the first and second angle steels. Longitudinal angle steels are provided at the connection points between the first and second angle steels and the frame beam.

[0008] By adopting the above technical solutions, the reinforcement components can make the connection between the floor slab and the load-bearing column more stable, and the frame beam will distribute more stress to the load-bearing column through the reinforcement components, so as to enhance the connection between the load-bearing column and the frame beam, thereby improving the overall structural strength.

[0009] This application further specifies that: if the beam width of the frame beam is less than the column width of the load-bearing column, the reinforcement includes a third angle steel, the top of the third angle steel is integrally formed with the bottom of the first angle steel, the bottom of the third angle steel is integrally formed with the top of the second angle steel, and the third angle steel penetrates the horizontal portion of the floor slab.

[0010] By adopting the above technical solution, the third angle steel penetrates the horizontal part of the floor slab, which can fix the load-bearing column through the frame beam connected to the floor slab without damaging the frame beam. This increases the connection structure between the load-bearing column and the frame beam, making the connection between the load-bearing column and the frame beam through the floor slab more stable.

[0011] This application further specifies that: if the outer edges of the load-bearing column and the frame beam are flush and form a flush surface, the reinforcement also includes a first reinforcing bar, a second reinforcing bar, and a third reinforcing bar. The first reinforcing bar is fixedly connected to the bottom of the first angle steel, and the second reinforcing bar is fixedly connected to the top of the second angle steel. The second angle steel is located at the top of the flush surface and abuts against the flush surface of the frame beam. A protective opening is provided on one leg of the third angle steel parallel to the flush surface. The protective opening of the third angle steel is configured to extend from the top of the horizontal part of the floor slab to the bottom of the vertical part of the floor slab. The bottom of the first reinforcing bar and the top of the second reinforcing bar are connected by a third reinforcing bar that penetrates the horizontal part of the floor slab. The third reinforcing bar is provided along the extension direction of the load-bearing column.

[0012] By adopting the above technical solution, the load-bearing column is located in the vertical part of the floor slab, and the third angle steel abuts against the side of the frame beam perpendicular to the horizontal plane on one leg. In order to reduce the damage to the vertical part of the floor slab structure caused by the vibration of the third angle steel, which would lead to unstable connection between the two ends of the vertical part of the floor slab and the frame beam, the third angle steel is cut off through the vertical part of the floor slab. The first, second and third steel bars exposed outside the frame beam are used to connect the load-bearing column. This not only enhances the connection strength between the load-bearing column and the frame beam, but also avoids the third angle steel from damaging the structure of the vertical part of the floor slab.

[0013] This application further specifies that: the vertical distance between the two ends of the first reinforcing bar is L1, the vertical distance between the two ends of the second reinforcing bar is L2, and the distance between the outer side of the first angle steel parallel to the plane of the frame beam and the outer side of the plane of the frame beam is C1, wherein C1 / L1≤1 / 6 and C1 / L2≤1 / 6.

[0014] By adopting the above technical solution, a safe connection structure is formed when the ratio of the indentation distance of the load-bearing column to the height of the first and second reinforcing bars is less than or equal to 1 / 6, so that the upper and lower parts of the load-bearing column form a stable connection and maintain the integrity of the connection structure and the transmission of force.

[0015] This application further specifies that: if the load-bearing column located at the bottom of the frame beam has an enlarged cross section, the reinforcement includes a fourth angle steel and a fifth angle steel, the top of the fourth angle steel is integrally formed with the bottom of the first angle steel and penetrates the horizontal part of the floor slab, the bottom of the fifth angle steel is integrally formed with the top of the second angle steel, and the top of the fifth angle steel abuts against the bottom of the horizontal part of the floor slab.

[0016] By adopting the above technical solution, in order to increase the bearing area at the bottom of the load-bearing column and reduce the stress concentration of the frame beam, the cross section of the load-bearing column at the top and bottom of the frame beam is increased. At this time, the fourth angle steel penetrates through the floor slab to strengthen the connection between the load-bearing column at the top of the frame beam and the frame beam, and the fifth angle steel strengthens the connection between the load-bearing column at the top and bottom of the frame beam and the frame beam. The bottom of the horizontal part of the floor slab can be supported on the top of the fifth angle steel, increasing the connection area with the load-bearing column.

[0017] This application further specifies that the bottom of the fourth angle steel protrudes from the bottom of the frame beam.

[0018] By adopting the above technical solution, the part of the fourth angle steel protruding from the bottom of the frame beam can minimize the displacement of the frame beam when the frame beam vibrates.

[0019] This application further specifies that: the load-bearing column located at the top of the horizontal portion of the floor slab is designated as the upper column, and the load-bearing column located at the bottom of the horizontal portion of the floor slab is designated as the lower column. If the cross-sectional dimension of the upper column is smaller than that of the lower column, a sixth angle steel is integrally formed on the top of the second angle steel, and the top of the sixth angle steel abuts against the bottom of the horizontal portion of the floor slab. The reinforcing member includes a fourth reinforcing bar, a fifth reinforcing bar, and a sixth reinforcing bar. The fourth reinforcing bar is fixedly connected to the bottom of the first angle steel, and the fifth reinforcing bar is fixedly connected to the top of the sixth angle steel. The bottom of the fourth reinforcing bar and the top of the fifth reinforcing bar are connected by a sixth reinforcing bar that penetrates the horizontal portion of the floor slab.

[0020] By adopting the above technical solution, the sixth reinforcing bar penetrates through the floor slab and connects the integrally formed fourth and fifth reinforcing bars, thus solving the problem of unstable connection caused by the distance difference due to the different cross-sectional dimensions of the upper and lower columns.

[0021] This application further specifies that: the straight-line distance between the two ends of the sixth reinforcing bar is L3, and the horizontal distance between the outer side of the bottom of the upper column and the outer side of the top of the lower column is C2, wherein C2 / L3≤1 / 6.

[0022] By adopting the above technical solution, a safe connection structure is formed when the ratio of the indentation distance of the upper column to the extension distance of the lower column is less than or equal to 1 / 6, so that the upper and lower columns form a stable connection and maintain the integrity of the connection structure and the transmission of force.

[0023] This application further specifies that: if the load-bearing column is a cylindrical column, the beam width of the frame beam is smaller than the diameter of the load-bearing column, the load-bearing column located at the top of the horizontal part of the floor slab is designated as an upper column, and the load-bearing column located at the bottom of the horizontal part of the floor slab is designated as a lower column. Several steel plates are vertically installed on the outer side of the upper column at intervals by bolts, and several steel plates are fixedly connected to the outer side of the lower column through the horizontal part of the floor slab. Carbon fiber cloth is spaced on the outer side of the steel plates of the load-bearing column at intervals.

[0024] By adopting the above technical solution, when the load-bearing column is cylindrical, the load-bearing column can utilize several steel plates that penetrate the horizontal part of the floor slab to enhance the connection area with the frame beam, making the overall connection structure more stable.

[0025] This application further specifies that the bottom of the load-bearing column is fixedly connected to the foundation platform by rebar anchoring.

[0026] By adopting the above technical solutions, the load-bearing columns are stably fixed to the foundation cap or basement floor using rebar anchoring technology, reducing swaying and improving overall stability.

[0027] In summary, this application has the following beneficial effects:

[0028] This application can increase the connection strength between load-bearing columns and frame beams by using different reinforcements that pass through the horizontal part of the floor slab at the top of the frame beam, depending on the different connection methods between the load-bearing columns and frame beams, thus making the overall structure more stable. Attached Figure Description

[0029] Figure 1 This is a front view schematic diagram of the overall structure of Embodiment 1 of this application.

[0030] Figure 2 This is a front view schematic diagram of the bottom structure of Embodiment 1 of this application.

[0031] Figure 3 This is a front view schematic diagram of the overall structure of Embodiment 2 of this application.

[0032] Figure 4 This is a front view schematic diagram of the overall structure of Embodiment 3 of this application.

[0033] Figure 5 This is a front view schematic diagram of the overall structure of Embodiment 4 of this application.

[0034] Figure 6 This is a front view schematic diagram of the overall structure of Embodiment 5 of this application.

[0035] Figure 7 This is a schematic diagram of the load-bearing column with carbon fiber cloth surrounding it in Embodiment 5 of this application.

[0036] Figure 8This is a cross-sectional schematic diagram of the overall structure of Embodiment 5 of this application.

[0037] Attached reference numerals: 1. Load-bearing column; 10. Upper column; 11. Lower column; 2. Frame beam; 3. Floor slab; 30. Horizontal part of floor slab; 31. Vertical part of floor slab; 4. First angle steel; 5. Second angle steel; 50. Sixth angle steel; 6. Reinforcing member; 60. Third angle steel; 61. First reinforcing bar; 62. Second reinforcing bar; 63. Third reinforcing bar; 64. Fourth angle steel; 65. Fifth angle steel; 66. Fourth reinforcing bar; 67. Fifth reinforcing bar; 68. Sixth reinforcing bar; 7. Longitudinal angle steel; 8. Steel plate; 9. Carbon fiber cloth. Detailed Implementation

[0038] The following is in conjunction with the appendix Figures 1 to 8 This application will be described in further detail.

[0039] Example 1:

[0040] refer to Figure 1 In this embodiment, a reinforcement structure for load-bearing columns of an old building is provided. The column body of the load-bearing column 1 is vertically penetrated by a frame beam 2, and a floor slab 3 is penetrated through the top of the frame beam 2. The horizontal part of the floor slab 3 covers the top of the frame beam 2, and the vertical part of the floor slab 3 is inserted into the interior of the frame beam 2.

[0041] A reinforcement structure for load-bearing columns in old buildings includes a first angle steel 4 and a second angle steel 5. The first angle steel 4 and the second angle steel 5 are vertically fixed to one opposite corner of the load-bearing column 1. Preferably, a modified epoxy resin adhesive is used to fill the space between the load-bearing column 1 and the first angle steel 4 and the second angle steel 5 to fix the first angle steel 4, the second angle steel 5, and the load-bearing column 1. Furthermore, each of the four opposite corners of the load-bearing column 1 is provided with a first angle steel 4 and a second angle steel 5. Adjacent opposite corners of the first angle steel 4 and the second angle steel 5 are fixed by welding with connecting plates. The connecting plates are welded to the first angle steel 4 and the second angle steel 5 on three sides, and the weld leg size is the same as the thickness of the connecting plates. Simultaneously, under horizontal loads such as earthquakes, the load-bearing column 1, especially the bottom section, will be subjected to significant shear force and bending moment. Increasing the distribution of stirrups at the bottom, i.e., setting up a stirrup-reinforced zone, can improve the ductility and seismic performance of the load-bearing column 1. In this embodiment, the stirrup-reinforced zone is located at the ends of the load-bearing column 1 and both ends of the frame beam 2. These are the areas where the load-bearing column 1 experiences the most complex stress, requiring a higher stirrup density to improve its load-bearing capacity and ductility. In another embodiment, the stirrup-reinforced zone is located at the column end of the load-bearing column 1.

[0042] The first angle steel 4 is fixedly connected to the top of the horizontal portion 30 of the floor slab, and the second angle steel 5 is fixedly connected to the bottom of the frame beam 2. Reinforcing members 6 are provided at the bottom of the first angle steel 4 and the top of the second angle steel 5. The reinforcing members 6 connect the first angle steel 4 and the second angle steel 5, thus integrating the frame beam 2 and the load-bearing column 1. This allows the frame beam 2 to distribute more stress to the load-bearing column 1 through the reinforcing members 6, improving the stability of the connection between the load-bearing column 1 and the frame beam 2. Furthermore, longitudinal angle steel 7 is fixedly connected to the first angle steel 4 and the second angle steel 5 at the connection point between the load-bearing column 1 and the frame beam 2. The longitudinal angle steel 7 increases the connection area between the load-bearing column 1 and the floor slab 3, further enhancing the stability of the connection structure between the load-bearing column 1 and the frame beam 2.

[0043] Furthermore, if the width of the frame beam 2 is less than the width of the load-bearing column 1, that is, the width of the connection between the frame beam 2 and the load-bearing column 1 does not exceed the width of the load-bearing column 1, the reinforcement 6 includes a third angle steel 60. The top of the third angle steel 60 is integrally formed with the bottom of the first angle steel 4, and the bottom of the third angle steel 60 is integrally formed with the top of the second angle steel 5. The third angle steel 60 penetrates the horizontal portion 30 of the floor slab. The third angle steel 60 can connect the first angle steel 4 and the second angle steel 5 integrally formed with the third angle steel 60 without damaging the frame beam 2. Therefore, the frame beam 2 connecting the load-bearing column 1 and the floor slab 3 is fixed by the first angle steel 4, the second angle steel 5, and the third angle steel 60. The area of ​​the connection structure between the load-bearing column 1 and the frame beam 2 increases, thereby making the connection between the load-bearing column 1 and the frame beam 2 more stable.

[0044] Additionally, when the first angle steel 4 needs to penetrate the floor at the top of the wall, the floor through which the angle steel passes should be chiseled open. The chiseling area should be 100mm around the angle steel, without damaging the frame beam 2. The slab reinforcement should be retained, and after reinforcement, it should be sealed with C25 fine stone concrete.

[0045] refer to Figure 2 In this embodiment, the bottom of the load-bearing column 1 is fixedly connected to the foundation platform or basement floor slab by rebar anchoring, which can reduce the shaking of the load-bearing column 1 and improve the overall stability.

[0046] The implementation principle of Embodiment 1 of this application is as follows: The column body of the load-bearing column 1 located at the top and bottom of the frame beam 2 is connected to the horizontal part of the floor slab 3 through the first angle steel 4, the second angle steel 5 and the reinforcement 6 set at the diagonal. When the beam width of the frame beam 2 is less than the column width of the load-bearing column 1, the first angle steel 60 passing through the floor slab 3 is used to connect with the first angle steel 4 and the second angle steel 5.

[0047] Example 2:

[0048] The difference between this embodiment and embodiment 1 is that the outer edges of the load-bearing column 1 and the frame beam 2 are flush and form a flush surface, and the way the reinforcement 6 is set is different.

[0049] refer to Figure 3 In this embodiment, the reinforcement 6 also includes a first reinforcing bar 61, a second reinforcing bar 62, and a third reinforcing bar 63. The first reinforcing bar 61 is welded to the bottom of the first angle steel 4, and the second reinforcing bar 62 is welded to the top of the second angle steel 5. The diameter of the first reinforcing bar 61 and the second reinforcing bar 62 is set to d. When the first reinforcing bar 61 is welded to one leg of the first angle steel 4 and the second reinforcing bar 62 is welded to one leg of the second angle steel 5, the single-sided welding is 10d and the double-sided welding is 5d. The top of the second angle steel 5 is located on the flush surface and abuts against the flush surface of the frame beam 2. At this time, the third angle steel 60 is blocked by the frame beam 2. In order to protect the structure of the frame beam 2 and avoid the third angle steel 60 from damaging the structure of the vertical part 31 of the floor slab, a protective opening is provided on one of the limbs of the third angle steel 60 that is parallel to the flat surface. The protective opening of the third angle steel 60 is set from the top of the horizontal part 30 of the floor slab to the bottom of the vertical part 31 of the floor slab. That is, the third angle steel 60 is cut off from the part of the limb that is parallel to the flat surface from the top of the horizontal part 30 of the floor slab to the bottom of the vertical part 31 of the floor slab, so that the third angle steel 60 does not penetrate the vertical part 31 of the floor slab. Therefore, the limb of the third angle steel 60 that is parallel to the flat surface cannot be integrally formed with the first angle steel 4 and the second angle steel 5. Then, the bottom of the first reinforcing bar 61 and the top of the second reinforcing bar 62 are connected by the third reinforcing bar 63 that penetrates the horizontal part 30 of the floor slab. The third reinforcing bar 63 is set along the extension direction of the load-bearing column 1, so that the part of the third angle steel 60 with one limb cut off can still improve the stability of the connection between the load-bearing column 1 and the frame beam 2 through the first reinforcing bar 61, the second reinforcing bar 62 and the third reinforcing bar 63.

[0050] In another embodiment, if the wide side of the frame beam 2 is located outside the load-bearing column 1, the third angle steel 60 must penetrate the frame beam 2 when connecting the first angle steel 4 and the second angle steel 5. In this case, the third angle steel 60 is not set, but the first angle steel 4 and the second angle steel 5 are connected by the first reinforcing bar 61, the second reinforcing bar 62 and the third reinforcing bar 63, and each of the first reinforcing bar 61, the second reinforcing bar 62 and the third reinforcing bar 63 is set to two.

[0051] Furthermore, the vertical distance between the two ends of the first reinforcing bar 61 is L1, the vertical distance between the two ends of the second reinforcing bar 62 is L2, and the distance between the outer side of the first angle steel 4 parallel to the plane of the frame beam 2 and the outer side of the plane of the frame beam 2 is C1, where C1 / L1≤1 / 6 and C1 / L2≤1 / 6. This satisfies the requirement that when the ratio of the indentation distance of the load-bearing column 1 to the height of the first reinforcing bar 61 and the second reinforcing bar 62 is less than or equal to 1 / 6, a safe connection structure is formed, so that the upper and lower parts of the load-bearing column 1 form a stable connection, and the integrity of the connection structure and the transmission of force can be kept within the range of safe use.

[0052] The implementation principle of Embodiment 2 of this application is as follows: when the outer edges of the load-bearing column 1 and the frame beam 2 are flush and form a flush surface, one leg of the third angle steel 60 located in the vertical part 31 of the floor slab is cut off, and the stability of the connection between the frame beam 2 and the load-bearing column 1 is improved by the first steel bar 61, the second steel bar 62 and the third steel bar 63 that penetrates the horizontal part 30 of the floor slab.

[0053] Example 3:

[0054] The difference between this embodiment and other embodiments is that the cross-section of the load-bearing column 1 at the bottom of the frame beam 2 is increased. Therefore, the cross-sectional area of ​​the load-bearing column 1 at the top of the frame beam 2 is smaller than the cross-sectional area at the bottom of the frame beam 2. The setting method of the reinforcement 6 used to connect the first angle steel 4 and the second angle steel 5 is also different from that in embodiment 1.

[0055] refer to Figure 4 In this embodiment, the reinforcement 6 includes a fourth angle steel 64 and a fifth angle steel 65. The top of the fourth angle steel 64 is integrally formed with the bottom of the first angle steel 4 and penetrates through the horizontal portion 30 of the floor slab. The bottom of the fifth angle steel 65 is integrally formed with the top of the second angle steel 5. The top of the fifth angle steel 65 abuts against the bottom of the horizontal portion 30 of the floor slab. The fourth angle steel 64 and the fifth angle steel 65 at the four opposite corners of the load-bearing column 1 can strengthen the connection between the load-bearing column 1 at the top of the frame beam 2 and the frame beam 2 by penetrating through the floor slab 3, in order to increase the bearing area at the bottom of the load-bearing column 1 and minimize stress concentration in the frame beam 2. The fifth angle steel 65 can bear part of the pressure of the floor slab 3, thereby strengthening the connection between the load-bearing column 1 at the top and bottom of the frame beam 2 and the frame beam 2.

[0056] Furthermore, the bottom of the fourth angle steel 64 protrudes from the bottom of the frame beam 2. When the frame beam 2 vibrates, the part of the fourth angle steel 64 protruding from the bottom of the frame beam 2 restricts the movement of the frame beam 2, thereby making the connection structure between the frame beam 2 and the load-bearing column 1 more stable.

[0057] The implementation principle of Embodiment 3 of this application is as follows: when the cross-section of the load-bearing column 1 at the bottom of the frame beam 2 is increased, a stable connection between the frame beam 2 and the load-bearing column 1 connected to the floor slab is achieved by setting the fourth angle steel 64, which extends from the bottom of the first angle steel 4, to penetrate the horizontal part 30 of the floor slab, and the fifth angle steel 65, which extends from the top of the second angle steel 5, to abut against the bottom of the horizontal part 30 of the floor slab.

[0058] Example 4:

[0059] The difference between this embodiment and other embodiments is that the load-bearing column 1 located at the top of the horizontal part 30 of the floor slab is set as the upper column 10, and the load-bearing column 1 located at the bottom of the horizontal part 30 of the floor slab is set as the lower column 11. The cross-sectional size of the upper column 10 is smaller than that of the lower column 11. The setting method of the reinforcement 6 used to connect the first angle steel 4 and the second angle steel 5 is also different from other embodiments.

[0060] refer to Figure 5 In this embodiment, the top of the second angle steel 5 is integrally formed with a sixth angle steel 50. The top of the sixth angle steel 50 abuts against the bottom of the horizontal part 30 of the floor slab. The reinforcement 6 includes a fourth reinforcing bar 66, a fifth reinforcing bar 67, and a sixth reinforcing bar 68. The fourth reinforcing bar 66 is welded to the bottom of the first angle steel 4, and the fifth reinforcing bar 67 is welded to the top of the sixth angle steel 50. The bottom of the fourth reinforcing bar 66 and the top of the fifth reinforcing bar 67 are connected by the sixth reinforcing bar 68 that penetrates the horizontal part 30 of the floor slab. Each angle steel has an integrally formed fourth reinforcing bar 66, a fifth reinforcing bar 67, and a sixth reinforcing bar 68 on each side to strengthen the structural strength of the angle steel. The sixth reinforcing bar 68 penetrates the floor slab 3 to connect the integrally formed fourth reinforcing bar 66 and the fifth reinforcing bar 67, reducing the risk of unstable connection due to the distance difference caused by the different cross-sectional dimensions of the upper column 10 and the lower column 11.

[0061] Furthermore, the straight-line distance between the two ends of the sixth reinforcing bar 68 is L3, and the horizontal distance between the outer edge of the bottom of the upper column 10 and the outer edge of the top of the lower column 11 is C2, where C2 / L3≤1 / 6. Also, the diameters of the fourth reinforcing bar 66 and the fifth reinforcing bar 67 are set to d. When the fourth reinforcing bar 66 is welded to one leg of the first angle steel 4, and the fifth reinforcing bar 67 is welded to one leg of the second angle steel 5, the welding depth is 10d on one side and 5d on both sides. Therefore, to achieve a safe connection structure where the ratio of the indentation distance of the upper column 10 to the extension distance of the lower column 11 is less than or equal to 1 / 6, the first angle steel 4 of the upper column 10, the horizontal portion of the floor slab 3, and the second angle steel 5 of the lower column 11 are stably connected by the fourth reinforcing bar 66, the fifth reinforcing bar 67, and the sixth reinforcing bar 68, maintaining the stability of the overall connection structure.

[0062] The implementation principle of Embodiment 4 of this application is as follows: When the cross-sectional dimension of the upper column 10 of the load-bearing column 1 is smaller than that of the lower column 11, the stability of the frame beam 2 and the load-bearing column 1 connected to the floor slab 3 is improved by setting the fourth reinforcing bar 66 at the bottom of the first angle steel 4 to penetrate the horizontal part 30 of the floor slab, the top of the sixth angle steel 50 to abut against the bottom of the horizontal part 30 of the floor slab, and the sixth reinforcing bar 68 to connect the top of the sixth angle steel 50 with the fourth reinforcing bar 66.

[0063] Example 5:

[0064] The difference between this embodiment and other embodiments is that the load-bearing column 1 is a cylinder and no additional support is provided. Figure 1 The first angle steel 4 and the second angle steel 5, as well as the reinforcing member 6, also differ from other embodiments. (See reference...) Figures 6 to 8In this embodiment, the width of the frame beam 2 is smaller than the diameter of the load-bearing column 1. The load-bearing column 1 is positioned at the top of the horizontal portion 30 of the floor slab as an upper column 10, and at the bottom of the horizontal portion 30 as a lower column 11. Several steel plates 8 are vertically fixed to the outer side of the upper column 10 at intervals via bolts. These steel plates 8 penetrate the horizontal portion 30 of the floor slab and are fixedly connected to the outer side of the lower column 11. Carbon fiber cloth 9 is spaced around the outer side of the steel plates 8 on the load-bearing column 1, i.e., circumferentially bonded with carbon fiber cloth 9, with an overlap length of 100mm. The steel plates 8 are longitudinally bonded. The steel plates 8 are connected to the original column via Φ10 bolts. If the area where the stirrups at the end of the load-bearing column 1 are reinforced requires the application of carbon fiber cloth 9, then bolts are not required in the section where the carbon fiber cloth 9 is applied. Since angle steel is difficult to fit the cylindrical load-bearing column 1, several steel plates 8 are provided penetrating the horizontal portion 30 of the floor slab to increase the connection area between the load-bearing column 1 and the frame beam 2, thereby making the overall connection structure more stable.

[0065] The implementation principle of Embodiment 5 of this application is as follows: when the load-bearing column 1 is a cylinder, several steel plates 8 are longitudinally pasted through the horizontal part 30 of the floor slab. Carbon fiber cloth 9 is arranged in a ring around the outer side of the load-bearing column 1 located on the steel plate 8, and bolts are used for fixing, so that the carbon fiber cloth 9 wraps the steel plate 8 more tightly.

[0066] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A reinforcing structure for a load-bearing column of an old building, wherein a column body portion of a load-bearing column (1) is vertically penetrated by a frame beam (2), and a top portion of the frame beam (2) is penetrated by a floor (3), characterized in that, The first angle steel (4) and the second angle steel (5) are vertically arranged at one diagonal of the load-bearing column (1), the first angle steel (4) is arranged at the top of the floor horizontal part (30), the second angle steel (5) is arranged at the bottom of the frame beam (2), the bottom of the first angle steel (4) and the top of the second angle steel (5) are provided with a reinforcing piece (6) for connecting the first angle steel (4) and the second angle steel (5), and the first angle steel (4) and the second angle steel (5) are provided with a longitudinal angle steel (7) at the connection of the load-bearing column (1) and the frame beam (2).

2. The load bearing column reinforcement structure for old house construction according to claim 1, wherein If the beam width of the frame beam (2) is less than the column width of the load-bearing column (1), the reinforcing piece (6) comprises a third angle steel (60), the top of the third angle steel (60) is integrally formed with the bottom of the first angle steel (4), the bottom of the third angle steel (60) is integrally formed with the top of the second angle steel (5), and the third angle steel (60) penetrates the floor horizontal part (30).

3. The load bearing column reinforcement structure for old house construction according to claim 2, wherein If the outer sides of the load-bearing column (1) and the frame beam (2) are flush and form a flush surface, the reinforcing piece (6) further comprises a first steel bar (61), a second steel bar (62) and a third steel bar (63), the first steel bar (61) is fixedly connected to the bottom of the first angle steel (4), the second steel bar (62) is fixedly connected to the top of the second angle steel (5), the second angle steel (5) is abutted to the flush surface of the frame beam (2) at the top of the flush surface, one limb of the third angle steel (60) parallel to the flush surface is provided with a protection opening, the protection opening of the third angle steel (60) is arranged from the top of the floor horizontal part (30) to the bottom of the floor vertical part (31), the bottom of the first steel bar (61) and the top of the second steel bar (62) are connected by the third steel bar (63) penetrating the floor horizontal part (30), and the third steel bar (63) is arranged along the extension direction of the load-bearing column (1).

4. The load bearing column reinforcement structure for old house construction according to claim 3, wherein The vertical distance between the two ends of the first steel bar (61) is L1, the vertical distance between the two ends of the second steel bar (62) is L2, and the distance between the outer side of the first angle steel (4) parallel to the flush surface of the frame beam (2) and the outer side of the flush surface of the frame beam (2) is C1, wherein C1 / L1≤1 / 6 and C1 / L2≤1 / 6.

5. The load bearing column reinforcement structure for old house construction according to claim 1, wherein If the load-bearing column (1) at the bottom of the frame beam (2) is enlarged in section, the reinforcing piece (6) comprises a fourth angle steel (64) and a fifth angle steel (65), the top of the fourth angle steel (64) is integrally formed with the bottom of the first angle steel (4) and penetrates the floor horizontal part (30), and the bottom of the fifth angle steel (65) is integrally formed with the top of the second angle steel (5), and the top of the fifth angle steel (65) is abutted to the bottom of the floor horizontal part (30).

6. The load bearing column reinforcement structure for old house construction according to claim 5, wherein The bottom of the fourth angle steel (64) protrudes from the bottom of the frame beam (2).

7. The load bearing column reinforcement structure for old building construction according to claim 1, wherein The load-bearing column (1) is arranged as an upper column (10) at the top of the floor horizontal part (30), and is arranged as a lower column (11) at the bottom of the floor horizontal part (30), if the cross-sectional size of the upper column (10) is smaller than that of the lower column (11), the second angle steel (5) is integrally formed with a sixth angle steel (50) at the top, the top of the sixth angle steel (50) abuts against the bottom of the floor horizontal part (30), the reinforcing member (6) comprises a fourth steel bar (66), a fifth steel bar (67) and a sixth steel bar (68), the fourth steel bar (66) is fixedly connected to the bottom of the first angle steel (4), the fifth steel bar (67) is fixedly connected to the top of the sixth angle steel (50), and the bottom of the fourth steel bar (66) and the top of the fifth steel bar (67) are connected by the sixth steel bar (68) penetrating through the floor horizontal part (30).

8. The load bearing column reinforcement structure for old house construction according to claim 7, wherein The straight-line distance between the two ends of the sixth steel bar (68) is L3, the horizontal distance between the outer side of the bottom of the upper column (10) and the outer side of the top of the lower column (11) is C2, and C2 / L3≤1 / 6.

9. The load bearing column reinforcement structure for old house construction according to claim 1, wherein If the load-bearing column (1) is a cylindrical column, the beam width of the frame beam (2) is smaller than the diameter of the load-bearing column (1), the load-bearing column (1) is arranged as an upper column (10) at the top of the floor horizontal part (30), and is arranged as a lower column (11) at the bottom of the floor horizontal part (30), the outer side of the upper column (10) is vertically provided with a plurality of steel plates (8) at intervals by planting steel bars, a plurality of steel plates (8) are fixedly connected to the outer side of the lower column (11) by penetrating through the floor horizontal part (30), and the load-bearing column (1) is sleeved with a carbon fiber cloth (9) at the outer side of the steel plate (8).

10. The load bearing column reinforcement structure for old house construction according to claim 1, wherein The bottom of the load-bearing column (1) is fixedly connected to the foundation slab by planting steel bars.

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