Connecting structure of post-cast strip and prefabricated cover plate
By using a width-fitting boss and multi-layer elastic seal at the connection between the prefabricated cover plate and the rear casting tape, combined with the polyurethane adhesive layer, the problem of cracking and waterproof failure of the prefabricated cover plate during the rear casting tape closure construction is solved. , achieving more efficient waterproofing effect and stability.
Patent Information
- Application Number
- CN202421103778.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2034-05-20
AI Technical Summary
In the prior art, prefabricated cover plates are prone to cracking during the construction of the closed rear casting tape, resulting in poor waterproofing effect, and the fixing method is difficult to cope with the settlement and temperature difference deformation of concrete walls, causing leakage risks.
The prefabricated cover plate with a width greater than the rear casting tape is combined with the boss, combined with multi-layer elastic seals and polyurethane adhesive layer, to form a multi-seal structure to ensure waterproofing effect and adapt to the deformation of concrete walls, and improve impact resistance.
Effectively prevent prefabricated cover plate from cracking, improve waterproofing effect and overall connection stability, reduce construction costs, and is suitable for promotion and use.
Smart Images
Figure CN222362528U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of post-cast strip closed construction, in particular to a connection structure of a post-cast strip and a prefabricated cover plate. Background Art
[0002] The post-cast strips on the basement exterior wall are usually sealed with prefabricated cover plates, which are usually made of concrete and are generally 10 to 20 cm thick. Therefore, a thick sealing layer protruding from the basement exterior wall is eventually formed. When waterproofing the sealing layer, the protruding position forms an unfavorable structure of a negative angle and a positive angle, which makes it difficult to handle the waterproofing of this part, and it is very easy to form a quality risk of leakage after the building is delivered for use. In order to facilitate waterproofing, a chamfer strip is usually made here with waterproof mortar.
[0003] Usually, M16 bolts are used to fix the left and right sides of the prefabricated cover plate to the concrete walls on both sides of the post-cast strip. Considering that the settlement or temperature difference deformation of the concrete walls on both sides of the post-cast strip is easy to cause the prefabricated cover plate to crack, when fixing the prefabricated cover plate, one side of the bolts is not completely tightened to ensure that the prefabricated cover plate has a certain amount of free movement space. However, the free movement of the prefabricated cover plate will cause the prefabricated cover plate to separate from the chamfer strip, thereby affecting the waterproof effect. Therefore, it is necessary to improve the installation method of the prefabricated cover plate to ensure the waterproof effect and prevent cracking. Utility Model Content
[0004] The main purpose of the utility model is to provide a connection structure between a post-cast strip and a prefabricated cover plate, so as to solve the technical problems of cracking and waterproof failure of the prefabricated cover plate in the prior art.
[0005] In order to achieve the above purpose, the utility model provides a connection structure of a post-cast strip and a prefabricated cover plate, and the technical scheme is as follows:
[0006] A connection structure between a post-cast strip and a prefabricated cover plate, wherein both sides of the post-cast strip have concrete walls, and the prefabricated cover plate has a main body with a width greater than that of the post-cast strip and a boss with a width matching that of the post-cast strip; the connection structure comprises an elastic seal, wherein there are two elastic seals and the two seals are respectively arranged on both sides of the post-cast strip; the elastic seal comprises a first elastic sealing layer, a second elastic sealing layer and a third elastic sealing layer; the first elastic sealing layer is clamped between the left and right side surfaces of the concrete wall and the left and right side surfaces of the boss; the second elastic sealing layer is clamped between the outer side surface of the concrete wall and the inner side surface of the main body; the third elastic sealing layer is clamped between the outer side surface of the concrete wall and the left and right side surfaces of the main body; the thickness of the third elastic sealing layer is greater than the thickness of the second elastic sealing layer.
[0007] First, the prefabricated cover plate of the utility model has a boss. By inserting the boss into the post-cast joint, the thickness of the prefabricated cover plate protruding from the outer wall of the basement can be reduced, which is helpful for waterproof construction and improving the quality of the waterproof layer. The insertion of the boss can reduce the amount of concrete poured on site in the post-cast joint and reduce costs.
[0008] Secondly, the utility model adopts a special layout of three elastic sealing layers to form multiple seals, which effectively improves the waterproof effect; the elastic seal can produce corresponding micro-deformation when the concrete walls on both sides of the post-cast strip are deformed due to settlement or temperature difference, which can prevent the prefabricated cover plate from cracking and ensure waterproofness; the elastic seal has good seismic resistance, can play a role in damping and shock absorption, alleviate local stress concentration, and improve the impact resistance of the overall connection.
[0009] It can be seen that the connection structure of the post-cast strip and the prefabricated cover plate of the utility model is simple in structure, easy to construct, and low in cost. It effectively solves the technical problems of prefabricated cover plate cracking and waterproof failure in the prior art, has strong practicality, and is suitable for promotion and use.
[0010] As a further improvement of the connection structure between the post-cast strip and the prefabricated cover plate, the first elastic sealing layer and the second elastic sealing layer are formed by folding a sheet-like elastic sealing layer, thereby improving the sealing effect and construction efficiency.
[0011] As a further improvement of the connection structure of the post-cast strip and the prefabricated cover plate, each elastic sealing member comprises at least two sheet-shaped elastic sealing layers spliced from top to bottom, thereby reducing the construction cost.
[0012] As a further improvement of the connection structure between the post-cast strip and the prefabricated cover plate, the thickness of the third elastic sealing layer increases gradually in the direction away from the post-cast strip. Thus, the thinner sealing layer on the side close to the post-cast strip can better adapt to local deformation, and the thicker sealing layer on the side away from the post-cast strip can provide stronger overall sealing.
[0013] As a further improvement of the connection structure of the post-cast strip and the prefabricated cover plate, the left and right sides of the third elastic sealing layer are inclined surfaces or curved surfaces connected to the ends of the outer side surfaces of the third elastic sealing layer. Thus, the transition design of the inclined surface or curved surface can reduce stress concentration and improve the anti-destruction performance of the sealing layer; the smooth transition surface formed by the connection is conducive to a tighter fit between the sealing layer and the concrete wall and the prefabricated cover plate, thereby improving the overall sealing effect.
[0014] As a further improvement of the connection structure of the post-cast strip and the prefabricated cover plate, it also includes an adhesive layer connecting the elastic seal and the concrete wall. The adhesive layer can improve the stability and reliability of the overall connection and reduce the risk of sealing failure due to deformation; the addition of the adhesive layer can enhance the bonding strength between the elastic seal and the concrete wall and improve the overall anti-seepage performance; the presence of the adhesive layer can coordinate the deformation difference between the elastic seal and the concrete wall and enhance the overall durability.
[0015] As a further improvement of the connection structure of the above-mentioned post-cast strip and prefabricated cover plate: the bonding layer is a polyurethane waterproof coating. The polyurethane material has good adhesion and waterproof properties, and can effectively enhance the bonding strength between the elastic seal and the concrete wall; the polyurethane coating has a certain elastic deformation capacity to a certain extent, which is conducive to coordinating the deformation difference between the two materials; the polyurethane waterproof coating has good weather resistance, and can ensure the long-term stability and reliability of the connection structure.
[0016] As a further improvement of the connection structure of the post-cast strip and the prefabricated cover plate, the connection structure further includes bolts, and through holes arranged at intervals from top to bottom are provided on the left and right sides of the body, and the bolts are fixed to the concrete wall after passing through the through holes and the elastic seal. Thus, the bonding strength between the prefabricated cover plate and the concrete wall is enhanced, and the overall stability and reliability of the entire connection structure are improved.
[0017] As a further improvement of the connection structure of the post-cast strip and the prefabricated cover plate, two groups of through holes arranged at intervals from top to bottom are provided on both the left and right sides of the body, thereby improving the overall stability and shear resistance of the connection structure and more flexibly adapting to the fixing requirements under different on-site conditions.
[0018] As a further improvement of the connection structure between the post-cast strip and the prefabricated cover plate, the upper and lower sides of the prefabricated cover plate are provided with matching protrusions and grooves, so that the installation efficiency of the prefabricated cover plate can be improved by positioning through the insertion and fitting of the protrusions and grooves.
[0019] The following is a further description of the embodiments of the invention provided in this specification in conjunction with the accompanying drawings and specific implementation methods. Additional aspects and advantages of the embodiments of the invention provided in this specification will be partially given in the following description, and partially will become apparent from the following description, or will be understood through the practice of the embodiments of the invention provided in this specification. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The drawings that constitute part of the embodiments of the inventions provided in this specification are used to assist in understanding the embodiments of the inventions provided in this specification. The contents provided in the drawings and the related descriptions in the embodiments of the inventions provided in this specification can be used to explain the embodiments of the inventions provided in this specification, but do not constitute improper limitations on the embodiments of the inventions provided in this specification. In the drawings:
[0021] Figure 1 It is a structural schematic diagram of an embodiment of the connection structure of the post-cast strip and the prefabricated cover plate of the utility model.
[0022] Figure 2 for Figure 1 Enlarged view of point A in the middle.
[0023] The relevant marks in the above drawings are:
[0024] 110-post-cast strip, 120-concrete wall, 200-precast cover plate, 210-main body, 220-boss, 310-first elastic sealing layer, 320-second elastic sealing layer, 330-third elastic sealing layer, 400-adhesive layer, 500-bolt, 610-leveling layer, 620-waterproof layer, 630-protective layer, 640-backfill soil layer. DETAILED DESCRIPTION
[0025] The following is a clear and complete description of the embodiments of the inventions provided in this specification in conjunction with the accompanying drawings. A person of ordinary skill in the art will be able to implement the embodiments of the inventions provided in this specification based on these descriptions. Before describing the embodiments of the inventions provided in this specification in conjunction with the accompanying drawings, it should be particularly noted that:
[0026] The technical solutions and technical features provided in each part of the embodiments of the invention provided in this specification, including the following description, may be combined with each other if there is no conflict.
[0027] In addition, the embodiments of the embodiments of the inventions provided in this specification involved in the following description are generally only a partial embodiment of the embodiments of the inventions provided in this specification rather than all the embodiments. Therefore, based on the embodiments of the embodiments of the inventions provided in this specification, all other embodiments obtained by ordinary technicians in this field without making any creative work should fall within the scope of protection of the embodiments of the inventions provided in this specification.
[0028] Regarding the terms and units in the embodiments of the inventions provided in this specification: The terms "including", "comprising", "having" and any variations thereof in the descriptions and claims of the embodiments of the inventions provided in this specification and in the related parts are intended to cover non-exclusive inclusions. In addition, other relevant terms and units in the embodiments of the inventions provided in this specification can be reasonably interpreted based on the relevant contents of the embodiments of the inventions provided in this specification.
[0029] Figure 1 It is a structural schematic diagram of an embodiment of the connection structure of the post-cast strip and the prefabricated cover plate of the utility model. Figure 2 for Figure 1 Enlarged view of point A in the middle.
[0030] like Figure 1-2 As shown, the two sides of the post-cast strip 110 are provided with concrete walls 120, and the upper and lower sides of the prefabricated cover plate 200 are provided with matching protrusions and grooves. The prefabricated cover plate 200 has a main body 210 with a width greater than the width of the post-cast strip 110 and a boss 220 with a width matching the width of the post-cast strip 110. The connection structure between the post-cast strip and the prefabricated cover plate includes an elastic seal, an adhesive layer 400 and bolts 500.
[0031] There are two elastic seals, which are respectively arranged on both sides of the post-casting strip 110. The elastic seals have a first elastic sealing layer 310, a second elastic sealing layer 320 and a third elastic sealing layer 330. The material of the elastic seal is preferably but not limited to any one of rubber, polyurethane foam and polystyrene foam.
[0032] The first elastic sealing layer 310 is clamped between the left and right sides of the concrete wall 120 and the left and right sides of the boss 220; the second elastic sealing layer 320 is clamped between the outer side of the concrete wall 120 and the inner side of the main body 210; the third elastic sealing layer 330 is clamped between the outer side of the concrete wall 120 and the left and right sides of the main body 210; the thickness of the third elastic sealing layer 330 is greater than the thickness of the second elastic sealing layer 320.
[0033] The first elastic sealing layer 310 and the second elastic sealing layer 320 are formed by folding a sheet-like elastic sealing layer; each elastic sealing member includes at least two sheet-like elastic sealing layers spliced from top to bottom.
[0034] The thickness of the third elastic sealing layer 330 increases gradually in a direction away from the post-casting strip 110 , and the left and right sides of the third elastic sealing layer 330 are inclined surfaces connected to the ends of the outer side surfaces of the third elastic sealing layer 330 .
[0035] The adhesive layer 400 is a polyurethane waterproof coating.
[0036] The left and right sides of the main body 210 are provided with through holes spaced apart from top to bottom, and the bolts 500 are fixed on the concrete wall 120 after passing through the through holes and elastic seals; the left and right sides of the main body 210 are each provided with two groups of through holes spaced apart from top to bottom.
[0037] After the prefabricated cover plate 200 is installed by using the connection structure of the above embodiment, a leveling layer 610, a waterproof layer 620 and a protective layer 630 are sequentially applied on the outer side of the prefabricated cover plate 200, and then a backfill soil layer 640 is constructed. The leveling layer 610 is a cement mortar layer. The waterproof layer 620 is formed by splicing waterproof rolls, and the width of the joint is 610 to 630 mm. The protective layer 630 is a polystyrene board or a foam board.
[0038] The above is a description of the relevant contents of the embodiments of the inventions provided in this specification. Based on these descriptions, a person of ordinary skill in the art will be able to implement the embodiments of the inventions provided in this specification. Based on the above contents of the embodiments of the inventions provided in this specification, all other preferred implementations and embodiments obtained by a person of ordinary skill in the art without making any creative work shall fall within the scope of protection of the embodiments of the inventions provided in this specification.
Claims
1. A connection structure of a post-cast strip and a prefabricated cover plate, wherein both sides of the post-cast strip (110) are provided with concrete walls (120), characterized in that: The prefabricated cover plate (200) comprises a body (210) having a width greater than that of the post-cast strip (110) and a boss (220) having a width adapted to that of the post-cast strip (110); The connection structure comprises two elastic seals, which are respectively arranged on both sides of the post-casting strip (110); The elastic sealing member comprises a first elastic sealing layer (310), a second elastic sealing layer (320) and a third elastic sealing layer (330); The first elastic sealing layer (310) is clamped between the left and right sides of the concrete wall (120) and the left and right sides of the boss (220); The second elastic sealing layer (320) is clamped between the outer side surface of the concrete wall (120) and the inner side surface of the body (210); The third elastic sealing layer (330) is clamped between the outer side surface of the concrete wall (120) and the left and right side surfaces of the body (210); The thickness of the third elastic sealing layer (330) is greater than the thickness of the second elastic sealing layer (320).
2. The connection structure of the post-cast strip and the prefabricated cover plate according to claim 1, characterized in that: The first elastic sealing layer (310) and the second elastic sealing layer (320) are formed by folding a sheet-like elastic sealing layer.
3. The connection structure of the post-cast strip and the prefabricated cover plate according to claim 2, characterized in that: Each elastic sealing element comprises at least two sheet-shaped elastic sealing layers spliced from top to bottom.
4. The connection structure of the post-cast strip and the prefabricated cover plate according to claim 1, characterized in that: The thickness of the third elastic sealing layer (330) increases gradually in a direction away from the post-casting strip (110).
5. The connection structure of the post-cast strip and the prefabricated cover plate according to claim 4, characterized in that: The left and right side surfaces of the third elastic sealing layer (330) are inclined surfaces or curved surfaces connected to the ends of the outer side surfaces of the third elastic sealing layer (330).
6. The connection structure of the post-cast strip and the prefabricated cover plate according to claim 1, characterized in that: It also includes an adhesive layer (400) connecting the elastic sealing member and the concrete wall (120).
7. The connection structure of the post-cast strip and the prefabricated cover plate according to claim 6, characterized in that: The adhesive layer (400) is a polyurethane waterproof coating.
8. The connection structure of the post-cast strip and the prefabricated cover plate according to claim 1, characterized in that: The connection structure also includes bolts (500). The left and right sides of the body (210) are provided with through holes arranged at intervals from top to bottom. The bolts (500) pass through the through holes and elastic seals and are fixed to the concrete wall (120).
9. The connection structure of the post-cast strip and the prefabricated cover plate according to claim 8, characterized in that: Two groups of through holes are arranged at intervals from top to bottom on both the left and right sides of the body (210).
10. The connection structure of the post-cast strip and the prefabricated cover plate according to claim 1, characterized in that: The upper and lower sides of the prefabricated cover plate (200) are provided with matching protrusions and grooves.