A high-difference inconsistent concrete member outer package reinforcing structure constructed in different periods
By installing carbon fiber cloth and reinforcing ribs at the external and internal corners of concrete components, the problem of cracking and water leakage caused by settlement at the junction of new and old buildings was solved, achieving efficient reinforcement and long-term waterproofing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN HENGGUANG TECH CONSTR CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-06-26
AI Technical Summary
The uneven settlement of the foundation and substructure at the junction of new and old building structures built in different years has caused cracks and leaks in the concrete components of the basement roof slab. Existing repair methods such as grouting and sealing are not very effective, and the cracking and leakage problems still exist after long-term use.
A reinforced structure is formed at the external and internal corners of a concrete component using carbon fiber cloth and reinforcing ribs. This includes a strip assembly connecting the carbon fiber cloth to the old concrete component and a reinforcing rib assembly, which covers the new concrete structure to form a protective and reinforced system.
It repairs cracking and leakage problems, improves the strength and stability of concrete components, extends service life, has dual internal and external crack and seepage prevention capabilities, has a simple structure that is easy to construct, and does not damage the original concrete structure.
Smart Images
Figure CN224413230U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building construction technology, specifically to an external reinforcement structure for concrete components with inconsistent elevations during construction at different times. Background Technology
[0002] In buildings constructed in different years, uneven settlement of the foundation and substructure at the junction can easily cause cracks and leaks in the concrete components of the basement roof slab. Repair and reinforcement are necessary for these cracked and leaking areas. Existing techniques include sealing the cracks with adhesive and then encasing them in fine aggregate concrete. While this method can provide short-term sealing, the problem of recurring cracking and leaks persists after prolonged use. Another approach involves laying waterproof fabric and waterstop strips, but the resulting strength is insufficient and the material cannot effectively share the load with the original concrete components. Summary of the Invention
[0003] The purpose of this utility model is to address the problems existing in the prior art by providing an external reinforcement structure for concrete components with inconsistent elevation differences constructed at different times.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] An external reinforcement structure for concrete components with inconsistent elevations constructed at different times includes a first reinforcement structure located at the external corner of the old concrete component and a second reinforcement structure located at the internal corner. The first reinforcement structure includes carbon fiber cloth laid along the external corner, and pressure strip assemblies are provided at multiple nodes of the carbon fiber cloth. The pressure strip assemblies are connected to the old concrete component through connectors. The first reinforcement structure also includes a first reinforcing rib assembly connecting the old concrete component, which covers the external corner and encases the new external corner concrete structure. The second reinforcement structure includes a second reinforcing rib assembly connecting the old and new concrete components, which covers the internal corner and encases the new internal corner concrete structure.
[0006] This external reinforcement structure, through the setting of the first reinforcement structure and the second reinforcement structure, can form protective reinforcement structures at the external and internal corners of concrete components with height differences, repair cracks and leaks, and avoid the problem of cracking and water leakage in the basement roof concrete components caused by uneven settlement of the foundation at the junction. Moreover, the strength and stability of the entire concrete component are improved after reinforcement, the service life is longer, and the risk of water leakage in the later stage is smaller.
[0007] Furthermore, a first roughening area is provided at the contact surface between the old concrete component and the new concrete structure at the external corner, and the first roughening area avoids the carbon fiber cloth.
[0008] Furthermore, a second roughening area is provided at the contact surface between the old concrete component and the new concrete structure at the inside corner.
[0009] Furthermore, the carbon fiber cloth has an overlapping area during the laying process, and the width of the overlapping area is not less than 50mm; the carbon fiber cloth is fixed to the old concrete component by adhesive, and the surface of the carbon fiber cloth is provided with a sandblasted roughening structure.
[0010] Furthermore, the carbon fiber cloth is laid from the low position area to the high position area, passing through two corners; the pressure strip assembly includes a first pressure strip set at the low position near the edge of the carbon fiber cloth, a second pressure strip set at the low position corner, and a third pressure strip set at the high position corner extending horizontally to the high position area.
[0011] Furthermore, the first pressure strip, the second pressure strip, and the third pressure strip are arranged simultaneously in the same vertical cross-section, and the pressure strip assembly is arranged at intervals along the length direction.
[0012] Furthermore, the first reinforcing rib assembly includes a bent first rib and a bent second rib. One end of the first rib is inserted into the low region of the external corner, and the other end extends to the high region of the external corner and connects to one end of the second rib. The other end of the second rib is inserted into the high region of the external corner. The ends of the first rib and the second rib have an overlap area of not less than 100mm. The inclined portion of the first rib is also connected to several first longitudinal ribs.
[0013] Furthermore, the second reinforcing rib assembly includes a bent third and fourth reinforcing rib, one end of the third reinforcing rib being inserted into the vertical portion of the inside corner, and one end of the fourth reinforcing rib being inserted into the horizontal portion of the inside corner. The other ends of the third and fourth reinforcing ribs have an overlap area of not less than 100mm and are connected together. The inclined portions of the third and fourth reinforcing ribs are also connected to several second longitudinal ribs.
[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. This external reinforcement structure, through the setting of the first reinforcement structure and the second reinforcement structure, can form protective reinforcement structures at the external and internal corners of concrete components with height differences, repairing cracks and leaks, avoiding the problem of cracking and water leakage in the basement roof concrete components caused by uneven settlement of the foundation at the junction. Moreover, the strength and stability of the entire concrete component are improved after reinforcement, the service life is longer, and the risk of leakage in the later stage is smaller; 2. This external reinforcement structure also has the characteristics of simple structure and easy construction. It does not require demolition and destruction of the original concrete structure, and can be constructed again on the original concrete component; through the simultaneous reinforcement of the internal and external corners, the effect is better than unilateral reinforcement, and it has the ability to prevent cracking and seepage in both directions; 3. The pressure strip assembly The setup not only helps to fix the carbon fiber cloth in place, ensuring it is securely positioned, but also compresses it to prevent it from lifting and separating from the old concrete structure. This is particularly effective for laying large areas of carbon fiber cloth. 4. The first reinforcing rib assembly forms a steel reinforcement system from low to high at the external corner, facilitating the construction of the new concrete structure at the external corner. Similarly, the second reinforcing rib assembly forms a right-angled steel reinforcement system at the internal corner, also facilitating the construction of the new concrete structure at the internal corner. Both provide stable connection points for the new structure, ensuring that the new part works collaboratively with the original structure to share the load. They can also be used in conjunction with the carbon fiber cloth to repair and reinforce structures damaged by height differences, re-establishing the force transmission path and restoring the structure's load-bearing capacity. Attached Figure Description
[0015] Figure 1 This is an overall schematic diagram of an external reinforcement structure for concrete components with inconsistent elevations constructed at different times, according to the present invention.
[0016] Figure 2 This is a schematic diagram of the unfolded carbon fiber cloth of this utility model;
[0017] Figure 3 This is a schematic diagram of the carbon fiber cloth overlap of this utility model;
[0018] Figure 4 This is a schematic diagram of the structure of the pressure strip assembly of this utility model;
[0019] Figure 5 This is a dimensional diagram of the outer reinforcement structure of this utility model. All dimensions in the diagram are in mm.
[0020] Figure 6 This is a schematic diagram of another structure for the rebar connection of this utility model;
[0021] In the diagram: 1. Old concrete component; 2. Carbon fiber cloth; 3. New concrete structure at the external corner; 4. New concrete structure at the internal corner; 5. First roughened area; 6. First pressure strip; 7. Second pressure strip; 8. Third pressure strip; 9. First rebar; 10. Second rebar; 11. First longitudinal rebar; 12. Third rebar; 13. Fourth rebar; 14. Second longitudinal rebar; 15. Second roughened area; 16. Rebar connector; 17. Arc-shaped clamp; 18. Opening. Detailed Implementation
[0022] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0023] In the description of this utility model, it should be noted that the terms "middle," "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Example 1
[0024] like Figure 1 As shown, a reinforcement structure for concrete components with inconsistent elevations constructed at different times includes a first reinforcement structure located at the external corner of the old concrete component 1 and a second reinforcement structure located at the internal corner. The first reinforcement structure includes carbon fiber cloth 2 laid along the external corner, and pressure strip assemblies are provided at multiple nodes of the carbon fiber cloth. The pressure strip assemblies are connected to the old concrete component 1 through connectors. The first reinforcement structure also includes a first reinforcing rib assembly connecting the old concrete component 1. The first reinforcing rib assembly covers the external corner and wraps the external corner with a new external corner concrete structure 3. The second reinforcement structure includes a second reinforcing rib assembly connecting the old and new concrete components 1. The second reinforcing rib assembly covers the internal corner and wraps the internal corner with a new internal corner concrete structure 4.
[0025] This external reinforcement structure, through the setting of the first reinforcement structure and the second reinforcement structure, can form protective reinforcement structures at the external and internal corners of concrete components with height differences, repair cracks and leaks, and avoid the problem of cracking and water leakage in the basement roof concrete components caused by uneven settlement of the foundation at the junction. Moreover, the strength and stability of the entire concrete component are improved after reinforcement, the service life is longer, and the risk of water leakage in the later stage is smaller.
[0026] This external reinforcement structure is also characterized by its simple structure and ease of construction. It does not require the demolition or damage of the original concrete structure; it can be constructed on the original concrete components. Through the simultaneous reinforcement of the inner and outer corners, it is more effective than unilateral reinforcement and has the ability to prevent cracking and seepage from both inside and outside.
[0027] The carbon fiber cloth 2 allows it to work in tandem with the old and new concrete to enhance the structure's tensile, shear, and seismic resistance. It also connects the old and new concrete, enabling them to bond and function more effectively. By sharing the structural load through the high tensile strength of the carbon fiber material, it can suppress crack propagation at external corners and repair damaged areas.
[0028] The setting of the pressure strip assembly is beneficial for fixing the carbon fiber cloth 2, so that the carbon fiber cloth 2 is fixed in the designated position, and it can also press the carbon fiber cloth 2 to prevent the carbon fiber cloth from lifting and separating from the old concrete component. It has a particularly good effect on the laying of large-area carbon fiber cloth.
[0029] The first reinforcing rib assembly can form a steel reinforcement system from low to high at the external corner to facilitate the construction of the new concrete structure 3 at the external corner; similarly, the second reinforcing rib assembly can form a right-angled steel reinforcement system at the internal corner to facilitate the construction of the new concrete structure 4 at the internal corner.
[0030] Both the first and second reinforcing rib assemblies provide stable connection points for the new structure, ensuring that the new part works in conjunction with the original structure to share the load. Furthermore, these reinforcing ribs can be used in conjunction with the carbon fiber cloth to repair and reinforce structures damaged by height differences, and can also re-establish the force transmission path of the structure, restoring its load-bearing capacity.
[0031] Furthermore, a first roughening area 5 is provided at the contact surface between the old concrete component 1 and the new concrete structure 3 at the external corner. The first roughening area 5 avoids the carbon fiber cloth 2. The first roughening area 5 can increase the roughness of the surface of the old concrete component, which is beneficial to improving the bonding ability of the new concrete with it. When setting it, it can avoid the area where the carbon fiber cloth is laid, so as to reduce the amount of roughening work. Instead, the area where the carbon fiber cloth 2 is laid is ground to make it clean and flat, so as to ensure the smooth adhesion of the carbon fiber cloth.
[0032] Similarly, a second roughened area 15 is provided at the contact surface between the old concrete component 1 and the new concrete structure 4 at the inside corner, in order to improve the bonding of the new concrete in this area.
[0033] Furthermore, in combination Figure 2 and Figure 3 As shown, the carbon fiber cloth 2 has an overlapping area during the laying process, and the width of the overlapping area is not less than 50mm; the carbon fiber cloth 2 is fixed to the old concrete component by pasting, and the surface of the carbon fiber cloth 2 is provided with a sandblasted roughening structure.
[0034] In this embodiment, the carbon fiber cloth 2 is selected as CF200 model, cut along the fiber direction, with a 50mm overlap at the boundary, and is tightly connected with structural adhesive during laying; the surfaces of the steel (pressure strip assembly) and the carbon fiber cloth can be coated with structural adhesive and sandblasted to roughen them, which facilitates a firm bond when concrete is poured later.
[0035] Furthermore, the carbon fiber cloth 2 is laid from the lower region to the higher region, passing through two corners; combined with Figure 4 As shown, the pressure strip assembly includes a first pressure strip 6 disposed at a low position near the edge of the carbon fiber cloth, a second pressure strip 7 disposed at a low position corner, and a third pressure strip 8 disposed at a high position corner extending horizontally towards the high position area.
[0036] The first pressure strip 6 can press down the edge of the carbon fiber cloth 2 at a low horizontal position to prevent it from lifting; the second pressure strip 7 is right-angled and is set at the corner so that the carbon fiber cloth can better fit the right-angle part, and these corner positions are also the key positions for cracking and leakage. A closer fit is also conducive to repairing cracks; the third pressure strip 8 can not only press the carbon fiber cloth at the corner, but also extend horizontally at a high position to press the carbon fiber cloth horizontally at a high position.
[0037] The first pressure strip 6, the second pressure strip 7, and the third pressure strip 8 can all be made of flat steel pressure strips, each with different dimensions; the connecting parts can be chemical anchors.
[0038] Furthermore, the first pressure strip 6, the second pressure strip 7, and the third pressure strip 8 are arranged simultaneously in the same vertical cross section, and multiple sets of the pressure strip assemblies are arranged at intervals along the length direction.
[0039] Furthermore, the first reinforcing rib assembly includes a bent first reinforcing rib 9 and a second reinforcing rib 10. One end of the first reinforcing rib 9 is inserted into the low region of the external corner, and the other end extends to the high region of the external corner and connects to one end of the second reinforcing rib 10. The other end of the second reinforcing rib 10 is inserted into the high region of the external corner. The ends of the first reinforcing rib 9 and the second reinforcing rib 10 have an overlap area of not less than 100mm. The inclined portion of the first reinforcing rib 9 is also connected to a plurality of first longitudinal ribs 11.
[0040] The first rebar 9 includes a vertical portion, an oblique portion, and a horizontal portion. The vertical portion is inserted into the lower horizontal portion of the external corner, and the horizontal portion extends to the upper portion to connect with the second rebar 10. The vertical portion of the second rebar 10 is inserted into the upper concrete. The oblique portion of the first rebar 9 can connect to the first longitudinal rebar, allowing multiple sets of first rebars arranged at intervals to be connected together. This arrangement can form a steel reinforcement system covering the external corner, and then new concrete is used to form the external corner concrete structure.
[0041] Furthermore, the second reinforcing rib assembly includes a bent third reinforcing rib 12 and a fourth reinforcing rib 13. One end of the third reinforcing rib 12 is inserted into the vertical portion of the inside corner, and one end of the fourth reinforcing rib 13 is inserted into the horizontal portion of the inside corner. The other ends of the third reinforcing rib 12 and the other ends of the fourth reinforcing rib 13 have an overlap area of not less than 100mm and are connected together. The inclined portions of the third reinforcing rib 12 and the fourth reinforcing rib 13 are also connected to a plurality of second longitudinal ribs 14.
[0042] The structure of the inside corner is relatively simple. The third rebar 12 and the fourth rebar 13 have basically the same structure. One end is inserted into the concrete and the other end is connected together. Similarly, the second longitudinal bar 14 is set to connect the rebars arranged at intervals, and then new concrete is poured to form the new concrete structure of the inside corner.
[0043] In this embodiment, as Figure 5 As shown, the first and second rebars have an overlap area of approximately 300mm and are connected by single-sided welding. Similarly, the second and third rebars have an overlap area of approximately 200mm and are also connected by single-sided welding. The depth of the first, second, third, and fourth rebars embedded in the concrete is no less than 80mm, preferably around 120mm. The length of the lower horizontal section of the external corner concrete structure is approximately 1000mm, the higher horizontal length is approximately 1100mm, and the thickness is approximately 100mm. The carbon fiber cloth laid at the external corner is no less than half the size of the new concrete, preferably 500mm at the lower position and 650mm at the higher position. Example 2
[0044] This embodiment provides another connection structure for rebar installation.
[0045] like Figure 6 As shown, a steel bar connector 16 is used to connect these steel bars. The steel bar connector 16 includes a pair of arc-shaped clamps 17, each of which has an opening 18 for connecting the steel bars.
[0046] In use, the pair of arc-shaped clamping arms 17 are respectively clamped on the adjacent first rebar 9 and second rebar 10, or the third rebar 12 and the fourth rebar 13, thus forming a relatively stable connection structure. No welding is required, avoiding the use of open flame, and construction safety is higher. At the same time, the first and second rebars do not need to be tightly attached, and the third and fourth rebars do not need to be tightly attached, reducing the difficulty of rebar alignment.
[0047] 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 reinforcement structure for concrete components with inconsistent elevations constructed at different times, characterized in that, The system includes a first reinforcement structure installed at the external corner of an old concrete component and a second reinforcement structure at the internal corner. The first reinforcement structure includes a carbon fiber cloth laid along the external corner, and pressure strip assemblies are provided at multiple nodes of the carbon fiber cloth. The pressure strip assemblies are connected to the old concrete component through connectors. The first reinforcement structure also includes a first reinforcing rib assembly connecting the old concrete component. The first reinforcing rib assembly covers the external corner and wraps around the new external corner concrete structure. The second reinforcement structure includes a second reinforcing rib assembly connecting the old and new concrete components. The second reinforcing rib assembly covers the internal corner and wraps around the new internal corner concrete structure.
2. The external reinforcement structure for concrete components with inconsistent elevations constructed at different times, as described in claim 1, is characterized in that... The old concrete component and the new concrete structure at the external corner have a first roughened area, which avoids the carbon fiber cloth.
3. The external reinforcement structure for concrete components with inconsistent elevations constructed at different times, as described in claim 1, is characterized in that... A second roughening area is provided at the contact surface between the old concrete component and the new concrete structure at the inside corner.
4. The external reinforcement structure for concrete components with inconsistent elevations constructed at different times, as described in claim 1, is characterized in that... The carbon fiber cloth has an overlapping area during the laying process, and the width of the overlapping area is not less than 50mm; the carbon fiber cloth is fixed to the old concrete component by adhesive, and the surface of the carbon fiber cloth is provided with a sandblasted roughening structure.
5. The external reinforcement structure for concrete components with inconsistent elevations constructed at different times, as described in claim 1, is characterized in that... The carbon fiber cloth is laid from the low position area to the high position area, passing through two corners; the pressure strip assembly includes a first pressure strip set at the low position near the edge of the carbon fiber cloth, a second pressure strip set at the low position corner, and a third pressure strip set at the high position corner extending horizontally to the high position area.
6. The external reinforcement structure for concrete components with inconsistent elevations constructed at different times, as described in claim 5, is characterized in that... The first pressure strip, the second pressure strip, and the third pressure strip are arranged simultaneously in the same vertical cross section, and the pressure strip assembly is arranged at intervals along the length direction.
7. The external reinforcement structure for concrete components with inconsistent elevations constructed at different times, as described in claim 1, is characterized in that... The first reinforcing rib assembly includes a bent first reinforcing rib and a bent second reinforcing rib. One end of the first reinforcing rib is inserted into the low region of the external corner, and the other end extends to the high region of the external corner and connects to one end of the second reinforcing rib. The other end of the second reinforcing rib is inserted into the high region of the external corner. There is an overlap area of not less than 100mm between the ends of the first reinforcing rib and the second reinforcing rib. The inclined portion of the first reinforcing rib is also connected to several first longitudinal ribs.
8. The external reinforcement structure for concrete components with inconsistent elevations constructed at different times, as described in claim 1, is characterized in that... The second reinforcing rib assembly includes a bent third and fourth reinforcing rib. One end of the third reinforcing rib is inserted into the vertical portion of the inside corner, and one end of the fourth reinforcing rib is inserted into the horizontal portion of the inside corner. The other ends of the third and fourth reinforcing ribs have an overlap area of not less than 100mm and are connected together. The inclined portions of the third and fourth reinforcing ribs are also connected to several second longitudinal ribs.