Expansion joint anti-seepage structure
By combining rigid Z-shaped baffles with concrete retaining walls at expansion joints, the problem of easy leakage at expansion joints was solved, achieving waterproofing and convenient maintenance, and reducing construction costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-18
- Publication Date
- 2026-04-07
AI Technical Summary
Existing expansion joints are prone to leakage, and traditional construction methods are slow and have a high risk of leakage, making it difficult to effectively prevent water leakage.
Z-shaped baffles made of rigid materials are combined with concrete retaining walls and fixed to both sides of the expansion joint through the connection and overlap parts. They are fixed with expansion bolts, sealed with a layer of foaming agent, and then combined with metal cover plates and backfill soil layers to prevent leakage.
It effectively prevents tearing caused by expansion joint settlement, reduces the risk of leakage, is easy to construct, maintain and replace, and reduces construction costs.
Smart Images
Figure CN224092737U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of building construction, in particular to a telescopic joint anti-seepage structure. BACKGROUND
[0002] With the rapid economic development, the urbanization construction develops rapidly, and the construction of large buildings has ushered in a golden development period.
[0003] Telescopic joint, when the plane size of building is big, in order to prevent the internal force of building component due to climate temperature change (thermal expansion, cold shrinkage) and concrete shrinkage makes structure crack or damage, for releasing this internal force, set up a structural joint along the appropriate part of building or construction joint direction. Telescopic joint is to divide the building components above the foundation such as wall, floor, roof into two independent parts, so that the building or structure can do horizontal expansion along the length direction. Usually, the telescopic joint is constructed when the floor leveling layer is constructed after the structure construction is completed, specifically, it is required to first embed ∠50*5 or ∠40*4 angle steel, then pour floor concrete, after the main structure is capped, the 3mm thick V-shaped steel plate is installed and full-welded with the embedded angle steel. The rigidity of V-shaped steel plate is too large, when the internal force of building component due to climate temperature change (thermal expansion, cold shrinkage) and concrete shrinkage, the V-shaped steel plate cannot fully deform, and the edge concrete structure of telescopic joint is first deformed and cracked or damaged. And the positioning accuracy and welding quality of embedded angle steel are high, once the positioning accuracy is not enough, it is difficult to tightly fit with the embedded angle steel when the V-shaped steel plate is installed later, the welding quality is not high, and the edge is easy to seep water. The maintenance difficulty of telescopic joint seepage is large, after the main structure is capped, the operation surface of telescopic joint is narrow, and the concrete transportation is difficult, which increases material loss, labor, construction period, and thus greatly increases the construction cost. The construction progress of traditional telescopic joint construction method is slow, and the leakage risk is high. Commonly used waterproof non-solidified coiled material is used for construction, but due to the settlement of telescopic joint, the coiled material is easy to be torn twice, which often leads to secondary leakage. CONTENT OF UTILITY MODEL
[0004] The utility model aims at providing a telescopic joint anti-seepage structure to solve the problem that the existing telescopic joint is easy to seep.
[0005] The utility model provides a telescopic joint anti-seepage structure, including concrete structure, concrete counterfort and Z type baffle, two between the concrete structure are equipped with telescopic joint, two concrete counterfortes are located on both sides of telescopic joint and on corresponding concrete structure, Z type baffle cover is equipped on telescopic joint, and both ends of Z type baffle are connected to corresponding concrete counterfort, and it is used for preventing the edge of telescopic joint from seeping.
[0006] Optionally, the Z-shaped baffle is an aluminum sealing plate.
[0007] Optionally, the Z-shaped baffle includes a connecting part, a telescopic part, and an overlapping part. One side of the telescopic part is connected to the connecting part, and the other side of the telescopic part is connected to the overlapping part. The connecting part is connected to one of the concrete curbs, and the overlapping part overlaps with another of the concrete curbs.
[0008] Optionally, the expansion joint anti-leakage structure further includes a first fastener, which is disposed on one of the concrete curbs and is used to fix the connection part to the concrete curb.
[0009] Optionally, the first fastener is an expansion bolt, and the anchoring depth of the expansion bolt is not less than 50mm.
[0010] Optionally, both the connecting portion and the overlapping portion include a vertical position and a horizontal position. The height of the vertical position is the same as the height of the concrete curb, and the length of the horizontal position is less than or equal to the length of the concrete curb.
[0011] Optionally, a foaming agent layer is coated between the Z-shaped baffle and the concrete curb, and the foaming agent layer is used to seal the Z-shaped baffle.
[0012] Optionally, the concrete curb is an inverted triangular concrete structure.
[0013] Optionally, the expansion joint anti-seepage structure also includes a backfill soil layer, which is embedded in the concrete structure and the concrete curb.
[0014] Optionally, the expansion joint anti-leakage structure further includes a metal cover plate, which is placed on the Z-shaped baffle, and a second fastener is provided on the concrete curb to fix the metal cover plate.
[0015] The beneficial effects of this plan are as follows:
[0016] Compared to existing technologies, this solution uses rigid Z-shaped baffles for waterproofing, which can minimize tearing caused by expansion joint settlement and effectively prevent leakage. The rigid Z-shaped baffle structure is easily visible, facilitating maintenance and replacement. Attached Figure Description
[0017] Figure 1 A schematic diagram of a leak-proof structure for expansion joints;
[0018] Figure 2 This is a schematic diagram of the Z-shaped baffle.
[0019] Explanation of reference numerals in the attached figures:
[0020] 10. Concrete structure; 11. Expansion joint; 20. Concrete curb; 30. Z-shaped baffle; 31. Connection part; 32. Expansion joint; 33. Overlap part; 40. First fastener; 50. Backfill layer; 60. Metal cover plate; 70. Second fastener. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are 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, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection within two components. For those skilled in the art, the specific meaning of the terms in this utility model can be understood according to the specific circumstances.
[0023] See Figure 1 This utility model provides a seepage-proof structure for an expansion joint 11, including a concrete structure 10, a concrete curb 20, and a Z-shaped baffle 30. An expansion joint 11 is provided between two concrete structures 10. Two concrete curbs 20 are respectively provided on both sides of the expansion joint 11 and located on the corresponding concrete structures 10. The Z-shaped baffle 30 is covered on the expansion joint 11, and the two ends of the Z-shaped baffle 30 are respectively connected to the corresponding concrete curbs 20 to prevent leakage at the edge of the expansion joint 11.
[0024] This solution uses a rigid Z-shaped baffle 30 for waterproofing, which can minimize tearing caused by settlement at the expansion joint 11 and thus prevent leakage. The rigid Z-shaped baffle 30 structure is easily inspected, facilitating maintenance and replacement.
[0025] In this embodiment, the Z-shaped baffle 30 is an aluminum sealing plate. It is understood that aluminum plates have low hardness but sufficient ductility, effectively preventing water damage while also avoiding the possibility of tearing. The metal material allows for easy and direct inspection, and is also more convenient for maintenance and replacement.
[0026] See further Figure 2 The Z-shaped baffle 30 includes a connecting part 31, an expansion part 32, and an overlapping part 33. One side of the expansion part 32 is connected to the connecting part 31, and the other side of the expansion part 32 is connected to the overlapping part 33. The connecting part 31 is connected to one concrete curb 20, and the overlapping part 33 overlaps with another concrete curb 20. It should be noted that one side of the Z-shaped baffle 30 is fixed to the concrete curb 20, and the other side overlaps with the concrete curb 20 to prevent tearing caused by settlement of the expansion joint 11.
[0027] In this embodiment, the anti-seepage structure of the expansion joint 11 also includes a first fastener 40, which is installed on a concrete curb 20 and used to fix the connection part 31 to the concrete curb 20. The first fastener 40 is an expansion bolt, and the anchorage depth of the expansion bolt is not less than 50mm. Expansion bolts are pre-embedded on both sides when the concrete curb 20 is poured, and an inverted triangular concrete curb is set at a distance of 100mm to 130mm from the edge of the expansion joint 11 structure.
[0028] In this embodiment, both the connecting portion 31 and the overlapping portion 33 include a vertical position and a horizontal position. The height of the vertical position is the same as the height of the concrete curb 20, and the length of the horizontal position is less than or equal to the length of the concrete curb 20. The positional relationship between the vertical and horizontal positions and the concrete curb 20 can better ensure the stability of the expansion joint 11 during settlement.
[0029] It should be noted that the telescopic part 32 may include one or more Z-shaped parts to ensure sufficient telescopic performance.
[0030] In this embodiment, a foaming agent layer is coated between the Z-shaped baffle 30 and the concrete curb 20. The foaming agent layer is used to seal the Z-shaped baffle 30. The foaming agent layer can seal the Z-shaped baffle 30 and the concrete curb 20, thus providing a waterproof function.
[0031] In this embodiment, the concrete inverted curb 20 is an inverted triangular concrete structure.
[0032] In this embodiment, the expansion joint 11 seepage prevention structure also includes a backfill soil layer 50, which is embedded in the concrete structure 10 and the concrete retaining wall 20.
[0033] In this embodiment, the expansion joint 11 anti-leakage structure also includes a metal cover plate 60, which is placed on the Z-shaped baffle 30, and a second fastener 70 for fixing the metal cover plate 60 is provided on the concrete curb 20.
[0034] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A leak-proof structure for expansion joints, characterized in that, include: A concrete structure, wherein an expansion joint is provided between two of the concrete structures; Two concrete curbs are respectively provided on both sides of the expansion joint and located on the corresponding concrete structure; Z-shaped baffles are installed over the expansion joint, and both ends of the Z-shaped baffles are respectively connected to the corresponding concrete curbs to prevent leakage at the edges of the expansion joint.
2. The expansion joint anti-leakage structure according to claim 1, characterized in that, The Z-shaped baffle is an aluminum sealing plate.
3. The expansion joint anti-leakage structure according to claim 1, characterized in that, The Z-shaped baffle includes a connecting part, a telescopic part, and an overlapping part. One side of the telescopic part is connected to the connecting part, and the other side of the telescopic part is connected to the overlapping part. The connecting part is connected to one of the concrete curbs, and the overlapping part overlaps with another of the concrete curbs.
4. The expansion joint anti-leakage structure according to claim 3, characterized in that, The expansion joint anti-leakage structure also includes a first fastener, which is provided on one of the concrete curbs and is used to fix the connection part to the concrete curb.
5. The expansion joint anti-leakage structure according to claim 4, characterized in that, The first fastener is an expansion bolt, and the anchoring depth of the expansion bolt is not less than 50mm.
6. The expansion joint anti-leakage structure according to claim 3, characterized in that, Both the connecting part and the overlapping part include a vertical position and a horizontal position. The height of the vertical position is the same as the height of the concrete curb, and the length of the horizontal position is less than or equal to the length of the concrete curb.
7. The expansion joint anti-leakage structure according to claim 1, characterized in that, A foaming agent layer is coated between the Z-shaped baffle and the concrete curb, and the foaming agent layer is used to seal the Z-shaped baffle.
8. The expansion joint anti-leakage structure according to claim 1, characterized in that, The concrete curb is an inverted triangular concrete structure.
9. The expansion joint anti-leakage structure according to claim 1, characterized in that, The expansion joint anti-seepage structure also includes a backfill soil layer, which is embedded in the concrete structure and the concrete embankment.
10. The expansion joint anti-leakage structure according to claim 1, characterized in that, The expansion joint anti-leakage structure also includes a metal cover plate, which is placed on the Z-shaped baffle, and a second fastener is provided on the concrete curb to fix the metal cover plate.