Reinforced structure for enlarging cross section of old house building beam
By implanting new steel bars and pouring concrete on the beams of the old building to form a reinforced structure, the problem of insufficient bearing capacity was solved and the stability of the beams was improved.
Patent Information
- Application Number
- CN202422535729.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-19
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-10-19
AI Technical Summary
The beams of old houses need to be reinforced to improve their stability due to insufficient bearing capacity.
New bottom reinforcement and surface reinforcement are implanted on one side of the old beam and tightened with stirrups. They are connected and fixed through reinforcement mechanisms and connection components, and finally concrete is poured to form a new reinforced beam structure.
By combining the newly added steel structure with concrete, the stability of the old house's building beams has been significantly improved.
Smart Images
Figure CN223343742U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of building beam reinforcement, and in particular to a reinforcement structure for building beams of old houses with an enlarged cross-section. Background Art
[0002] Beams are important structural components in buildings. They primarily bear lateral and shear forces, with bending being the primary form of deformation. Beams play a crucial role in construction, supporting not only the building's superstructure but also the weight of the roof and floors.
[0003] However, when a structure is severely overloaded due to improper use, it can easily lead to insufficient bearing capacity. For example, industrial plants undergoing technological transformation or changes in production processes, or civil buildings undergoing changes in use, such as converting a balcony into a kitchen, can all lead to insufficient bearing capacity of the beams. Therefore, it is necessary to reinforce the beams of old buildings. Utility Model Content
[0004] In order to improve the stability of the building beams of old houses, the present application provides a reinforcement structure for the building beams of old houses with an enlarged cross-section.
[0005] This application provides a reinforcement structure for beams with increased cross-section in old buildings, which adopts the following technical solutions:
[0006] A structure for reinforcing beams with an enlarged cross-section in an old house comprises an old crossbeam arranged between two main beams, a newly added bottom reinforcement being provided on one side of the old crossbeam, a newly added surface reinforcement being provided above the newly added bottom reinforcement, newly added stirrups being provided around the side walls of the newly added surface reinforcement and the newly added bottom reinforcement, reinforcement mechanisms for connecting and fixing the main beam being provided at both ends of the newly added surface reinforcement, and connection components for connecting and fixing the stirrups to the old crossbeam being provided at both ends of the newly added stirrups.
[0007] By adopting the above technical solution, when it is necessary to reinforce the old beams of an old building, first, new bottom reinforcement and new surface reinforcement are implanted on one side of the old beam respectively, and then the new stirrups are used to tighten the new bottom reinforcement and the new surface reinforcement, and at the same time, the new surface reinforcement is connected and reinforced by the reinforcement mechanism, and the new stirrups are connected and reinforced by the connecting assembly, and finally, concrete is poured. At this time, the concrete and the old beam are connected as one, and the old beam is reinforced by the newly poured concrete, which is beneficial to improve the stability of the beams of the old building.
[0008] Optionally, the reinforcement mechanism includes a steel plate, which is arranged on the side of the main beam away from the old crossbeam, one end of the newly added rib passes through the main beam, one end of the newly added rib is bent downward at a right angle, one end of the newly added rib is welded to the steel plate, and the steel plate is provided with a fixing component for fixing to the main beam.
[0009] By adopting the above technical solution, when it is necessary to connect and fix the newly added reinforcement, first, the two ends of the newly added reinforcement are respectively passed through the main beams on both sides, and then the two ends of the newly added reinforcement are respectively bent downward to 90 degrees, and then the steel plate is fixed to one side of the main beam through the fixing assembly, and finally the newly added reinforcement and the steel plate are welded to each other. At this time, the newly added reinforcement is fixed to one side of the old beam, which is beneficial to improve the stability of the fixation of the newly added reinforcement.
[0010] Optionally, the fixing assembly includes an expansion bolt and a nut, one end of the expansion bolt passes through the steel plate and is fixedly connected to the main beam, the nut is threadedly connected to the other end of the expansion bolt, and the nut is tightly pressed against the outer wall of the steel plate.
[0011] By adopting the above technical solution, when the steel plate needs to be fixed, the position of the steel plate is first determined, and then the expansion bolt is passed through the steel plate and fixed on the main beam, and finally the nut is tightened. Under the tightening action of the nut, the steel plate is fixed to the side wall of the main beam, which is beneficial to improve the stability of the steel plate fixation.
[0012] Optionally, the connecting assembly includes two connecting bars, original stirrups are provided in the old beam, the two connecting bars are integrally formed at both ends of the newly added stirrups, and the two connecting bars are welded to the original stirrups respectively.
[0013] By adopting the above technical solution, when it is necessary to improve the connection strength between the old beam and the newly poured concrete, the old beam is first broken to expose the original stirrups of the old beam, and then the connecting reinforcement is welded to the original stirrups. At this time, the newly added stirrups and the original stirrups are fixedly connected to each other, which is beneficial to improving the connection strength between the old beam and the newly poured concrete.
[0014] Optionally, a new waist rib is provided between the new surface rib and the new bottom rib.
[0015] By adopting the above technical solution, under the action of the newly added waist reinforcement, it is beneficial to increase the stiffness of the beam skeleton, while restraining the shrinkage cracks of the concrete and reducing the development of cracks in the tension zone.
[0016] Optionally, both ends of the newly added bottom reinforcement are respectively implanted in the main beam, and the implantation depth of the newly added bottom reinforcement is 10D.
[0017] By adopting the above technical solution, the newly added bottom reinforcement is connected and fixed to the main beam by implanting steel bars, which is beneficial to improving the stability of the connection and fixation of the newly added bottom reinforcement.
[0018] Optionally, the welding between the newly added ribs and the steel plate is double-sided welding, and the welding length is 5D.
[0019] By adopting the above technical solution, the newly added ribs and the steel plate are welded on both sides, which is beneficial to improving the stability of the connection and fixation between the newly added ribs and the steel plate.
[0020] Optionally, the welding between the connecting reinforcement and the original stirrup is single-sided welding, and the welding length is 10D.
[0021] By adopting the above technical solution, the connecting reinforcement and the original stirrups are welded on one side, which is beneficial to improving the stability of the connection and fixation between the connecting reinforcement and the original stirrups.
[0022] In summary, this application has the following beneficial technical effects:
[0023] When it is necessary to reinforce the old beams of an old building, first implant new bottom reinforcement and new surface reinforcement on one side of the old beam respectively, then use new stirrups to tighten the new bottom reinforcement and new surface reinforcement, and at the same time connect and reinforce the new surface reinforcement through the reinforcement mechanism, connect and reinforce the new stirrups through the connecting components, and finally pour concrete. At this time, the concrete and the old beam are connected as one, and the old beam is reinforced by the newly poured concrete, which is beneficial to improve the stability of the beams of the old building. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 This is a plan elevation view of the enlarged cross-section reinforcement structure for the old house building beams of the present application;
[0025] Figure 2 yes Figure 1 An enlarged view of part A;
[0026] Figure 3 It is a planar side view of the old house building beam enlarged cross-section reinforcement structure of the present application.
[0027] Explanation of the accompanying numbers: 1. Main beam; 2. Old cross beam; 3. New bottom reinforcement; 4. New surface reinforcement; 5. New stirrups; 6. Steel plate; 7. Expansion bolt; 8. Nut; 9. Connecting reinforcement; 10. Original stirrups; 11. New waist reinforcement. DETAILED DESCRIPTION
[0028] The following is combined with Figure 1-3 This application is described in further detail.
[0029] See also Figure 1A reinforcement structure for beams with increased cross-section in old buildings, comprising an old crossbeam 2 cast between two main beams 1. New bottom reinforcement 3 is installed on one side of the old crossbeam 2, new surface reinforcement 4 is installed above the new bottom reinforcement 3, and new stirrups 5 are arranged around the side walls of the new surface reinforcement 4 and the new bottom reinforcement 3. There are multiple new stirrups 5, and the multiple new stirrups 5 are evenly distributed along the length direction of the new surface reinforcement 4 and the new bottom reinforcement 3. Reinforcement mechanisms are installed at both ends of the new surface reinforcement 4, and the reinforcement mechanisms are used to connect and fix with the main beam 1. Connection components are installed at both ends of the new stirrups 5, and the connection components are used to connect and fix with the old crossbeam 2.
[0030] When reinforcing an old beam 2 in an existing building by increasing its cross-section, new bottom reinforcement 3 is first implanted on one side of the old beam 2. New surface reinforcement 4 is then implanted and simultaneously secured to the main beam 1 using a reinforcement mechanism. Multiple new stirrups 5 are then tightened between the sidewalls of the new bottom reinforcement 3 and the new surface reinforcement 4, and these new stirrups 5 are then secured to the old beam 2 using a connecting assembly. The new surface reinforcement 4, new bottom reinforcement 3, and new stirrups 5 form a new reinforced beam. After the concrete is poured into the reinforced beam, the beam is secured to the old beam 2, completing the reinforcement of the old beam 2.
[0031] For details, see Figure 1 and Figure 2 The reinforcement mechanism includes a steel plate 6. The steel plate 6 is installed on the side of the main beam 1 facing away from the old crossbeam 2. One end of the newly added reinforcement 4 passes through both main beams 1 and extends beyond the side wall of the main beam 1. One end of the newly added reinforcement 4 is bent at a right angle, pointing vertically downward. This right-angled end of the newly added reinforcement 4 is welded to the steel plate 6.
[0032] See also Figure 2 In this embodiment, the steel plate 6 measures 150*150*8mm. To facilitate its secure installation on the sidewall of the main beam 1, the steel plate 6 is fitted with a fixing assembly comprising expansion bolts 7 and nuts 8. Four expansion bolts 7 are located at the corners of the steel plate 6. One end of each expansion bolt 7 penetrates the steel plate 6 and is fixedly inserted into the main beam 1. The number of nuts 8 is the same as the number of expansion bolts 7, and the nuts 8 are threadedly connected to the other ends of the expansion bolts 7.
[0033] To insert and secure the new ribs 4, first insert both ends of the new ribs 4 through the main beams 1 on either side, then bend them into right angles. Next, place a steel plate 6 against the side of the main beam 1 facing away from the old beam 2. Four expansion bolts 7 are inserted and four nuts 8 are tightened. The steel plate 6 is now secured to the side of the main beam 1 facing away from the old beam 2. Finally, the right-angled ends of the new ribs 4 are welded to the steel plates 6, completing the connection and securement of the new ribs 4.
[0034] It should be noted that, see Figure 2 The welding of the newly added rib 4 and the steel plate 6 is double-sided welding, and the welding length is 5D. By double-sided welding of the newly added rib 4 and the steel plate 6, and the welding length is 5 times the diameter of the newly added rib 4, the connection and fixation of the newly added rib 4 and the steel plate 6 are guaranteed.
[0035] For details, see Figure 3 The connection assembly includes a connecting bar 9. The original stirrups 10 are tied inside the old beam 2. There are two connecting bars 9, one end of each of which is integrally formed with one end of the newly added stirrup 5, and the other end of each of which is welded to the top and bottom surfaces of the original stirrup 10.
[0036] When tying the newly added stirrups 5, first break the old beam 2 to expose the original stirrups 10. Then tie the newly added stirrups 5, and make one connecting bar 9 abut the top surface of the original stirrups 10, and the other connecting bar 9 abut the bottom surface of the original stirrups 10. Finally, weld the connecting bars 9 to the original stirrups 10 respectively to complete the connection and fixation of the newly added stirrups 5.
[0037] It should be noted that, see Figure 3 The welding of the connecting reinforcement 9 and the original stirrup 10 is single-sided welding, and the welding length is 10D. The welding of the newly added stirrup 5 and the original stirrup 10 is single-sided welding, and the welding length is 10 times the diameter of the connecting steel bar to ensure the connection and fixation of the newly added stirrup 5 and the original stirrup 10.
[0038] See also Figure 3 New waist bars 11 are also tied between the newly added surface bars 4 and the newly added bottom bars 3. In this embodiment, there are two new waist bars 11, both of which are arranged between the newly added surface bars 4 and the newly added bottom bars 3. The new waist bars 11 have three main functions for the new reinforced beam: first, they increase the rigidity of the beam skeleton; second, they restrain shrinkage cracks in the concrete; and third, they reduce the development of cracks in the tension zone.
[0039] See also Figure 1 In order to improve the stability of the newly added bottom reinforcement 3, the two ends of the newly added bottom reinforcement 3 are respectively implanted in the main beam 1 on both sides, and the implantation depth of the newly added bottom reinforcement 3 is 10D.
[0040] By implanting the newly added bottom reinforcement 3 at a depth 10 times the diameter of the newly added bottom reinforcement 3 , the stability of the connection and fixation between the newly added bottom reinforcement 3 and the main beam 1 is ensured.
[0041] Working principle of a reinforcement structure with enlarged cross-section of beams in old buildings:
[0042] When it is necessary to reinforce the old beam 2 of an old building by increasing its cross section, first implant a new bottom reinforcement 3 on one side of the old beam 2, and the implantation depth of the new bottom reinforcement 3 is 10D. Then implant the new surface reinforcement 4, and make the two ends of the new surface reinforcement 4 pass through the main beam 1 on both sides, and then bend the two ends of the new surface reinforcement 4 into right-angle ends. Then, place the steel plate 6 against the side of the main beam 1 away from the old beam 2, and insert four expansion bolts 7 and tighten four nuts 8. At this time, the steel plate 6 is fixed to the side of the main beam 1 away from the old beam 2. Finally, weld the right-angle end of the new surface reinforcement 4 to the steel plate 6, and the welding length is 5D, completing the connection and fixation of the new surface reinforcement 4.
[0043] Then tie the newly added stirrups 5. When tying the newly added stirrups 5, first break the old beam 2 to expose the original stirrups 10. Then tie the newly added stirrups 5, and make one of the connecting bars 9 abut the top surface of the original stirrups 10, and the other connecting bar 9 abut the bottom surface of the original stirrups 10. Finally, weld the connecting bars 9 to the original stirrups 10 respectively, and the welding length is 10D to complete the connection and fixation of the newly added stirrups 5.
[0044] Then tie the newly added waist reinforcement 11. At this time, the newly added surface reinforcement 4, the newly added bottom reinforcement 3, the newly added stirrups 5, the connecting reinforcement 9 and the newly added waist reinforcement 11 are combined to form a new reinforced beam. Finally, concrete is poured on the new reinforced beam. After the concrete solidifies, the reinforcement of the old beam 2 is completed.
[0045] In summary, reinforcing the cross section of the old beam 2 by pouring new concrete is beneficial to improving the stability of the beams of the old building.
[0046] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.
Claims
1. A beam reinforcement structure with an enlarged cross section for an old building, comprising an old cross beam (2) arranged between two main beams (1), characterized in that: A newly added bottom rib (3) is provided on one side of the old crossbeam (2), a newly added surface rib (4) is provided above the newly added bottom rib (3), and newly added stirrups (5) are provided around the side walls of the newly added surface rib (4) and the newly added bottom rib (3), and both ends of the newly added surface rib (4) are provided with a reinforcement mechanism for connecting and fixing the main beam (1), and both ends of the newly added stirrups (5) are provided with a connection assembly for connecting and fixing the old crossbeam (2); The reinforcement mechanism includes a steel plate (6), the steel plate (6) is arranged on a side of the main beam (1) away from the old cross beam (2), one end of the newly added rib (4) passes through the main beam (1), one end of the newly added rib (4) is bent downward at a right angle, one end of the newly added rib (4) is welded to the steel plate (6), and the steel plate (6) is provided with a fixing component for fixing to the main beam (1); The fixing assembly includes an expansion bolt (7) and a nut (8), one end of the expansion bolt (7) passes through the steel plate (6) and is fixedly connected to the main beam (1), the nut (8) is threadedly connected to the other end of the expansion bolt (7), and the nut (8) is tightly pressed against the outer wall of the steel plate (6); The connection assembly comprises two connection bars (9), original stirrups (10) are provided in the old crossbeam (2), the two connection bars (9) are respectively integrally formed at both ends of the newly added stirrups (5), and the two connection bars (9) are respectively welded to the original stirrups (10).
2. The old house beam enlarged cross-section reinforcement structure according to claim 1, characterized in that: A new waist rib (11) is provided between the new surface rib (4) and the new bottom rib (3).
3. The old house beam enlarged cross-section reinforcement structure according to claim 1, characterized in that: Both ends of the newly added bottom reinforcement (3) are respectively implanted in the main beam (1), and the implantation depth of the newly added bottom reinforcement (3) is 10D.
4. The structure for reinforcing beams with enlarged cross-section for old buildings according to claim 2, characterized in that: The welding of the newly added ribs (4) and the steel plate (6) is double-sided welding, and the welding length is 5D.
5. The structure for reinforcing beams with increased cross-section for old buildings according to claim 1, characterized in that: The welding of the connecting reinforcement (9) and the original stirrup (10) is single-sided welding, and the welding length is 10D.