A type of expansion joint drainage channel structure
By designing a drainage channel structure between columns, combined with connecting plates and expansion seal strips, the leakage problem caused by poor construction quality of roof expansion joints was solved, achieving effective seepage prevention and sealing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA CONSTR FIFTH ENG DIV CORP LTD
- Filing Date
- 2025-04-03
- Publication Date
- 2026-05-26
AI Technical Summary
In building construction, poor construction quality of roof expansion joints makes it difficult to solve water leakage problems, especially in rainy areas. Existing construction methods mainly rely on repairing the upper waterproof layer, which is not very effective.
The design incorporates a column-to-column drainage system, including column-to-column connecting plates, beam-to-beam connecting plates, and expansion sealant strips, forming a continuous drainage system. Combined with waterproof sealant and junction connecting plates, this ensures a tight seal and prevents water seepage.
By forming a connected drainage system, water seepage is effectively prevented, indoor water seepage is avoided, the sealing reliability of expansion joints is improved, and leakage at joints is prevented, making it suitable for engineering construction conditions.
Smart Images
Figure CN224281626U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of engineering construction, and in particular to a structure for a drainage channel in an expansion joint. Background Technology
[0002] In construction engineering, expansion joints are an important structural feature, typically installed where there is a significant height difference between two buildings or where the area is excessively long. Properly constructed expansion joints can effectively prevent structural cracks and protect the integrity of the structure. However, in actual construction, there are still many hidden dangers in the construction of roof-column expansion joints, especially on flat roofs. Although these expansion joints are sloped, drainage is still difficult in rainy areas. If the construction quality of the expansion joint is poor, leaks are likely to occur. Reasons for this include: insufficient height of the roof sill during the initial construction, leading to leaks at concrete joints; improper installation and adhesion of the roof waterproofing membrane, and aging and loss of waterproofing function; and poor waterproofing performance of the roof expansion joint itself, resulting in leaks. These factors can lead to the failure of the upper waterproofing layer, causing water seepage. Currently, most construction methods only address the problem by repairing the seepage points in the upper waterproofing layer, a problem that urgently needs to be solved. Utility Model Content
[0003] To address the shortcomings of the prior art, this application provides a deformation joint drainage channel structure.
[0004] The above-mentioned inventive objective of this application is achieved through the following technical solutions:
[0005] The column-to-column drainage channel is located between adjacent structural columns at the expansion joint. Column-to-column connecting plates extend from both sides of the drainage channel. Each adjacent structural column has a clearance groove along the length of the structural beam. The column-to-column connecting plates are fixedly connected to the structural beam and embedded within the clearance grooves. A first beam-to-beam drainage channel and a second beam-to-beam drainage channel are located at both ends of the column-to-column drainage channel. Both the first and second beam-to-beam drainage channels are located between adjacent structural beams at the expansion joint. Beam bottom connecting plates extend from both sides of the first and second beam-to-beam drainage channels and are fixedly connected to the bottom of the structural beam. The first beam-to-beam drainage channel, the column-to-column drainage channel, and the second beam-to-beam drainage channel overlap sequentially to form a slope and are interconnected. Both the first and second beam-to-beam drainage channels have drainage holes that connect to external pipes. The clearance grooves are filled with waterproof sealant. An expansion joint strip is provided between the beam bottom connecting plate and the bottom of the structural beam along the length of the beam bottom connecting plate.
[0006] By adopting the above technical solution, the first inter-beam drainage channel, the inter-column drainage channel, and the second inter-beam drainage channel are sequentially overlapped and connected to form a sloped drainage channel structure located below the expansion joint in the beam-column area. Water seeping into the waterproofing area above the roof inter-column expansion joint can enter this drainage channel structure along the expansion joint, and after being guided by the slope within the channel, it is discharged into external pipes through drainage holes to prevent water accumulation, thus becoming a second line of defense against water seepage from the expansion joint and preventing indoor water seepage. Specifically, the inter-column connecting plate is embedded in and fixed within the clearance groove left in the structural column. The clearance groove provides connection space for the inter-column drainage channel, ensuring the connection between the columns. The drainage channel fits tightly against the structural column, and is filled with waterproof sealant to seal the gap between the structural column and the inter-column connection plate, blocking the path of water seepage down the side of the structural column, preventing leakage, and improving the sealing performance of the inter-column drainage channel. In the beam area outside the column, the bottom connection plate of the beam drainage channel is pressed tightly against the bottom of the structural beam by an expansion waterstop strip. After the waterstop strip expands when it comes into contact with water, it further blocks the gap between the bottom of the beam and the connection plate, preventing water seepage from the bottom of the beam, improving the sealing performance of the first and second inter-beam drainage channels, thereby ensuring the sealing reliability of the overall drainage channel structure and preventing indoor water seepage.
[0007] In a preferred embodiment, this application can be further configured as follows: both ends of the inter-column drainage channel are provided with connecting drainage channels, the connecting drainage channels are located outside the structural column and between adjacent structural beams, one of the connecting drainage channels overlaps with and is interconnected with the first inter-beam drainage channel, the other connecting drainage channel overlaps with and is interconnected with the second inter-beam drainage channel, connecting connecting plates are provided on both sides of the connecting drainage channel, the connecting connecting plates are fixedly connected to the bottom of the structural beam, an expansion stop strip is provided between the connecting connecting plate and the structural beam, a first expansion groove is provided between the connecting connecting plate and the connecting drainage channel, a sealing plate is provided at the end of the first expansion groove near the structural column, and the sealing plate is fixedly connected to the outside of the structural column.
[0008] By adopting the above technical solution and setting up the junction drainage channel, a connection platform can be provided at the intersection of the first beam drainage channel, the column drainage channel and the second beam drainage channel at the outside of the column and the bottom of the beam. With the design of the junction connection plate, the first expansion groove and the sealing plate, the connection platform between the first beam drainage channel and the column drainage channel can be completely fitted into the main structure to avoid node leakage. At the same time, the junction connection plate, together with the expansion waterstop strip, can prevent water from seeping from the bottom of the beam.
[0009] In a preferred embodiment, this application may be further configured such that: a second expansion groove is provided between the first inter-beam drainage channel and the corresponding beam bottom connecting plate, and between the second inter-beam drainage channel and the corresponding beam bottom connecting plate, the first expansion groove and the second expansion groove overlap and communicate with each other, and both the first expansion groove and the second expansion groove are located at the bottom of the structural beam.
[0010] By adopting the above technical solution, a second expansion groove is set, which can be adapted to the first expansion groove of the junction drainage groove, completing the transition from inter-column drainage to inter-beam drainage. At the same time, by setting the first expansion groove and the second expansion groove at the bottom of the structural beam, the size of the inter-beam drainage groove is enlarged, ensuring that all seepage water can fall into the drainage groove along the side of the structural beam.
[0011] In a preferred embodiment, this application can be further configured such that the inter-column connecting plate and the beam bottom connecting plate are respectively fixedly connected to the structural column and the structural beam by means of nail gun fixing.
[0012] By adopting the above technical solution, the nails are directly driven into the concrete of the structural columns or beams, which can directly achieve rigid fixation between the column connection plate, the bottom connection plate of the beam and the main structure. The operation is simple and fast, suitable for engineering construction conditions, and at the same time better reinforces the installation of the expansion waterstop strip.
[0013] In a preferred embodiment, the present application may be further configured such that the junction connection plate is fixedly connected to the bottom of the structural beam by means of nailing.
[0014] In a preferred embodiment, this application may be further configured such that the first inter-beam drainage channel, the inter-column drainage channel, and the second inter-beam drainage channel are sequentially overlapped by welding.
[0015] By adopting the above technical solution and using welding to sequentially overlap the components to form a continuous drainage channel structure without interruption, the risk of leakage caused by connection failure can be avoided, the reliability of the drainage channel structure can be improved, the operation is fast and the structure is stable, and it is suitable for engineering construction conditions.
[0016] In a preferred embodiment, this application may be further configured such that the first inter-beam drainage channel, the inter-column drainage channel, and the second inter-beam drainage channel are all arc-shaped.
[0017] By adopting the above technical solution, an arc-shaped drainage trough structure is used, which facilitates welding, effectively ensures welding quality, and is easy to install.
[0018] In summary, this application includes at least one of the following beneficial technical effects:
[0019] 1. The first inter-beam drainage channel, the inter-column drainage channel, and the second inter-beam drainage channel are sequentially overlapped and connected to form a sloping drainage channel structure located below the expansion joint in the beam-column area. Water seeping into the waterproofing area above the roof inter-column expansion joint can enter this drainage channel structure along the expansion joint, and after being guided by the slope within the channel, it is discharged into external pipes through drainage holes to prevent water accumulation. This forms a second line of defense against water seepage from the expansion joint, thereby preventing indoor water seepage. Specifically, the inter-column connecting plate is embedded and fixed within the clearance groove left in the structural column. The clearance groove provides connection space for the inter-column drainage channel, ensuring the connection between the inter-column drainage channel and the structural column. The structural columns fit tightly together, and the clearance grooves are filled with waterproof sealant to seal the contact gaps between the structural columns and the inter-column connection plates. This blocks the path of water seepage down the side of the structural columns, preventing leakage and improving the sealing performance of the inter-column drainage channels. In the beam area outside the columns, the bottom connection plate of the beam drainage channel is pressed tightly against the bottom of the structural beam by an expansion waterstop strip. After the waterstop strip expands when it comes into contact with water, it further blocks the gap between the bottom of the beam and the connection plate, preventing water seepage from the bottom of the beam. This improves the sealing performance of the first and second inter-beam drainage channels, thereby ensuring the sealing reliability of the overall drainage channel structure and preventing indoor water seepage.
[0020] 2. By setting up the junction drainage channel, a connection platform can be provided at the intersection of the first beam drainage channel, the column drainage channel and the second beam drainage channel on the outside of the column and the bottom of the beam. With the design of the junction connection plate, the first expansion groove and the sealing plate, the connection platform between the first beam drainage channel and the column drainage channel can be completely fitted into the main structure to avoid node leakage. At the same time, the junction connection plate, together with the expansion waterstop strip, can prevent water from seeping from the bottom of the beam.
[0021] 3. By setting a second expansion groove, it can be adapted to the first expansion groove of the junction drainage groove, completing the transition from inter-column drainage to inter-beam drainage. At the same time, by setting the first and second expansion grooves at the bottom of the structural beam, the size of the inter-beam drainage groove is expanded, ensuring that all seepage water can fall into the drainage groove along the side of the structural beam. Attached Figure Description
[0022] Figure 1 This is an assembly diagram of the expansion joint drainage channel structure in the beam-column joint area in this application;
[0023] Figure 2 This is a structural schematic diagram of the expansion joint drainage channel structure in this application;
[0024] Figure 3 yes Figure 1 A magnified view of part A in the diagram.
[0025] Reference numerals in the attached drawings: 1. Intercolumn drainage channel; 2. Structural column; 3. Intercolumn connecting plate; 4. Structural beam; 5. Relief groove; 6. First interbeam drainage channel; 7. Second interbeam drainage channel; 8. Beam bottom connecting plate; 9. Drainage hole; 10. Expansion waterstop strip; 11. Intersection drainage channel; 12. Intersection connecting plate; 13. First expansion groove; 14. Sealing plate; 15. Second expansion groove; 16. Nail. Detailed Implementation
[0026] The following description, in conjunction with the accompanying drawings, illustrates exemplary embodiments of this application, including various details to aid understanding. These should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this application. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.
[0027] It should be noted that the terms "first," "second," etc., used in this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this disclosure described herein can be implemented in orders other than those illustrated or described herein. The implementation methods described in the following exemplary embodiments do not represent all implementation methods consistent with this disclosure.
[0028] Furthermore, the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article, unless otherwise specified, generally indicates that the preceding and following related objects have an "or" relationship.
[0029] The following is a reference appendix. Figure 1 To be continued Figure 3 This application describes a structure for a drainage channel in an expansion joint.
[0030] like Figure 1 and Figure 2As shown, the expansion joint drainage channel structure includes an inter-column drainage channel 1, which is located between adjacent structural columns 2 at the expansion joint. Inter-column connecting plates 3 extend from both sides of the inter-column drainage channel 1. Relief grooves 5 are provided on the sides of adjacent structural columns 2 along the length of structural beams 4. The inter-column connecting plates 3 are fixedly connected to the structural beams 4 and embedded in the relief grooves 5. A first inter-beam drainage channel 6 and a second inter-beam drainage channel 7 are respectively provided at both ends of the inter-column drainage channel 1. Both the first inter-beam drainage channel 6 and the second inter-beam drainage channel 7 are located between adjacent structural beams 4 at the expansion joint. Both sides of the first beam drainage channel 6 and the second beam drainage channel 7 are provided with beam bottom connecting plates 8. The beam bottom connecting plates 8 are fixedly connected to the bottom of the structural beam 4. The first beam drainage channel 6, the column drainage channel 1, and the second beam drainage channel 7 are sequentially overlapped to form a slope and are connected. Both the first beam drainage channel 6 and the second beam drainage channel 7 are provided with drainage holes 9, which are connected to external pipes. The interior of the clearance channel 5 is filled with waterproof sealant (not shown in the figure). An expansion waterstop strip 10 is provided between the beam bottom connecting plate 8 and the bottom of the structural beam 4 along the length of the beam bottom connecting plate 8.
[0031] Specifically, the first beam-to-beam drainage channel 6, the column-to-column drainage channel 1, and the second beam-to-beam drainage channel 7 are sequentially overlapped and connected to form a sloping drainage channel structure located below the expansion joint in the beam-column area. Water seeping into the waterproofing area above the roof column-to-column expansion joint can enter this drainage channel structure along the expansion joint, and after being guided by the slope within the channel, it is discharged into the external pipe through the drainage hole 9 to prevent water accumulation, thus becoming the second line of defense against water seepage from the expansion joint and preventing indoor water seepage. The column-to-column connecting plate 3 is embedded and fixed within the clearance groove 5 left in the structural column 2. The clearance groove 5 provides connection space for the column-to-column drainage channel 1, ensuring that the column-to-column drainage channel 1 and the column-to-column drainage channel 7 are connected. The structural column 2 fits tightly and is filled with waterproof sealant to seal the gap between the structural column 2 and the inter-column connecting plate 3, blocking the path of water seepage down the side of the structural column 2, preventing leakage, and improving the sealing performance of the inter-column drainage channel 1. In the beam area outside the column, the bottom connecting plate 8 of the beam drainage channel is pressed tightly to the bottom of the structural beam 4 by an expansion waterstop strip 10. After the waterstop strip expands when it comes into contact with water, it further blocks the gap between the bottom of the beam and the connecting plate, preventing water seepage from the bottom of the beam, improving the sealing performance of the first inter-beam drainage channel 6 and the second inter-beam drainage channel 7, thereby ensuring the sealing reliability of the overall drainage channel structure and avoiding indoor water seepage.
[0032] It should be noted that the first inter-beam drainage channel 6, the inter-column drainage channel 1, and the second inter-beam drainage channel 7 are overlapped in sequence. Specifically, the open end of the first inter-beam drainage channel 6 is placed above the open end of the inter-column drainage channel 1, the open end of the inter-column drainage channel 1 is placed above the open end of the second inter-beam drainage channel 7, and so on, overlapping in a top-down manner to achieve slope finding.
[0033] It should also be noted that in this embodiment, there can be multiple first beam drainage channels 6, column drainage channels 1, and second beam drainage channels 7. This embodiment demonstrates the drainage channel structure of a single beam-column area node. In actual construction, the lengths of the first beam drainage channels 6 and the second beam drainage channels 7 are determined according to the length of the structural beam 4. At the same time, the positions of the first beam drainage channels 6 and the second beam drainage channels 7 are only relative to the column drainage channels 1. The length of the column drainage channels 1 is determined according to the inner width of the adjacent structural column 2. The number of the first beam drainage channels 6, column drainage channels 1, and second beam drainage channels 7 needs to be reasonably set according to the actual length of the expansion joint. The opening ends of the first beam drainage channels 6 and the second beam drainage channels 7 at the beginning and end need to be sealed or extend outside the main structure to connect to the external drainage system. This is common knowledge to those skilled in the art and will not be elaborated on here.
[0034] As a preferred option, such as Figure 2 and Figure 3 As shown, both ends of the inter-column drainage channel 1 are provided with connecting drainage channels 11. The connecting drainage channels 11 are located outside the structural column 2 and between adjacent structural beams 4. One connecting drainage channel 11 overlaps with and is connected to the first inter-beam drainage channel 6, and the other connecting drainage channel 11 overlaps with and is connected to the second inter-beam drainage channel 7. Connecting plates 12 extend from both sides of the connecting drainage channels 11. The connecting plates 12 are fixedly connected to the bottom of the structural beam 4. An expansion waterstop strip 10 is provided between the connecting plate 12 and the structural beam 4. Specifically, the expansion waterstop strip 10 between the connecting plate 12 and the structural beam 4 and the expansion waterstop strip 10 between the bottom connecting plate 8 and the structural beam 4 can be the same expansion waterstop strip. A first expansion groove 13 is provided between the joint connecting plate 12 and the joint drainage groove 11. A sealing plate 14 is provided at one end of the first expansion groove 13 near the structural column 2. The sealing plate 14 is fixedly connected to the outside of the structural column 2. By setting the joint drainage groove 11, a connection platform can be provided at the intersection of the first beam drainage groove 6, the column drainage groove 1, and the second beam drainage groove 7 at the outside of the column and the bottom of the beam. With the design of the joint connecting plate 12, the first expansion groove 13, and the sealing plate 14, the connection platform between the first beam drainage groove 6 and the column drainage groove 1 can be completely fitted to the main structure to avoid node leakage. At the same time, the joint connecting plate 12, together with the expansion water-stop strip 10, can prevent water from seeping from the bottom of the beam.
[0035] Furthermore, a second expansion groove 15 is provided between the first inter-beam drainage channel 6 and the corresponding beam bottom connecting plate 8, and between the second inter-beam drainage channel 7 and the corresponding beam bottom connecting plate 8. The first expansion groove 13 and the second expansion groove 15 overlap and communicate with each other. Both the first expansion groove 13 and the second expansion groove 15 are located at the bottom of the structural beam 4. By setting the second expansion groove 15, it can be adapted to the first expansion groove 13 of the connecting drainage channel 11, completing the transition from inter-column drainage to inter-beam drainage. At the same time, by setting the first expansion groove 13 and the second expansion groove 15 at the bottom of the structural beam 4, the size of the inter-beam drainage channel is enlarged, ensuring that all seepage water can fall into the drainage channel along the side of the structural beam 4.
[0036] Preferably, the inter-column connecting plate 3 and the beam bottom connecting plate 8 are fixedly connected to the structural column 2 and the structural beam 4 respectively by means of nail gun 16. The nail gun 16 is directly driven into the concrete of the structural column 2 or the structural beam 4, which can directly achieve rigid fixation between the inter-column connecting plate 3, the beam bottom connecting plate 8 and the main structure. The operation is simple and fast and suitable for engineering construction conditions. At the same time, it can better reinforce the installation of the expansion waterstop strip 10. In addition, the junction connecting plate 12 can also be fixedly connected to the bottom of the structural beam 4 by means of nail gun 16, with the same effect as the beam bottom connecting plate 8, which will not be described in detail here.
[0037] In addition, the first beam drainage channel 6, the column drainage channel 1, and the second beam drainage channel 7 are sequentially overlapped by welding. By adopting welding to overlap sequentially, a continuous drainage channel structure without interruption is formed, which can avoid the risk of leakage caused by connection, improve the reliability of the drainage channel structure, and make the operation fast and the structure stable, suitable for engineering construction conditions.
[0038] Furthermore, the first inter-beam drainage channel 6, the inter-column drainage channel 1, and the second inter-beam drainage channel 7 are all arc-shaped. By adopting an arc-shaped drainage channel structure, welding is facilitated, welding quality is effectively guaranteed, and installation is convenient.
[0039] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of this application.
Claims
1. A drainage channel structure for expansion joints, characterized in that, include: A column drainage channel (1) is provided between adjacent structural columns (2) at the expansion joint. Column connecting plates (3) extend from both sides of the column drainage channel (1). Relief grooves (5) are provided on the sides of adjacent structural columns (2) along the length of the structural beam (4). The column connecting plates (3) are fixedly connected to the structural beam (4) and embedded in the relief grooves (5). A first beam drainage channel (6) and a second beam drainage channel (7) are provided at both ends of the column drainage channel (1). Both the first beam drainage channel (6) and the second beam drainage channel (7) are located between adjacent structural beams (4) at the expansion joint. (6) and the second beam drainage channel (7) are provided with beam bottom connecting plates (8) on both sides. The beam bottom connecting plates (8) are fixedly connected to the bottom of the structural beam (4). The first beam drainage channel (6), the column drainage channel (1) and the second beam drainage channel (7) are sequentially overlapped to form a slope and are connected. The first beam drainage channel (6) and the second beam drainage channel (7) are provided with drainage holes (9). The drainage holes (9) are connected to external pipes. The relief groove (5) is filled with waterproof sealant. An expansion waterstop strip (10) is provided between the beam bottom connecting plate (8) and the bottom of the structural beam (4) along the length direction of the beam bottom connecting plate (8).
2. The expansion joint drainage channel structure as described in claim 1, characterized in that, Both ends of the inter-column drainage channel (1) are provided with connecting drainage channels (11). The connecting drainage channels (11) are located outside the structural column (2) and between adjacent structural beams (4). One of the connecting drainage channels (11) overlaps with and is connected to the first inter-beam drainage channel (6). The other connecting drainage channel (11) overlaps with and is connected to the second inter-beam drainage channel (7). Connecting plates (12) are provided on both sides of the connecting drainage channel (11). The connecting plates (12) are fixedly connected to the bottom of the structural beam (4). An expansion waterstop strip (10) is provided between the connecting plates (12) and the structural beam (4). A first expansion groove (13) is provided between the connecting plates (12) and the connecting drainage channel (11). A sealing plate (14) is provided at the end of the first expansion groove (13) near the structural column (2). The sealing plate (14) is fixedly connected to the outside of the structural column (2).
3. The expansion joint drainage channel structure as described in claim 2, characterized in that, A second expansion groove (15) is provided between the first beam drainage groove (6) and the corresponding beam bottom connecting plate (8), and between the second beam drainage groove (7) and the corresponding beam bottom connecting plate (8). The first expansion groove (13) and the second expansion groove (15) overlap and communicate with each other. The first expansion groove (13) and the second expansion groove (15) are both located at the bottom of the structural beam (4).
4. The expansion joint drainage channel structure as described in claim 1, characterized in that, The inter-column connecting plate (3) and the beam bottom connecting plate (8) are respectively fixed to the structural column (2) and the structural beam (4) by means of nails (16).
5. The expansion joint drainage channel structure as described in claim 2, characterized in that, The junction connection plate (12) is fixedly connected to the bottom of the structural beam (4) by means of nails (16).
6. The expansion joint drainage channel structure as described in claim 1, characterized in that, The first beam drainage channel (6), the column drainage channel (1), and the second beam drainage channel (7) are sequentially overlapped by welding.
7. The expansion joint drainage channel structure as described in claim 1, characterized in that, The first beam drainage channel (6), the column drainage channel (1), and the second beam drainage channel (7) are all arc-shaped.